KR960000940B1 - Method of welding tubular products of polyarylene sulfide and - Google Patents

Method of welding tubular products of polyarylene sulfide and Download PDF

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Publication number
KR960000940B1
KR960000940B1 KR1019920023915A KR920023915A KR960000940B1 KR 960000940 B1 KR960000940 B1 KR 960000940B1 KR 1019920023915 A KR1019920023915 A KR 1019920023915A KR 920023915 A KR920023915 A KR 920023915A KR 960000940 B1 KR960000940 B1 KR 960000940B1
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KR
South Korea
Prior art keywords
cross
welded
temperature
section
polyarylene sulfide
Prior art date
Application number
KR1019920023915A
Other languages
Korean (ko)
Other versions
KR930012266A (en
Inventor
사또시 우스이
고오이찌 고다마
요오이찌로오 야마노베
겐 가시와다떼
Original Assignee
구레하 가가꾸 고오교오 가부시끼가이샤
아라끼 다다시
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Publication of KR930012266A publication Critical patent/KR930012266A/en
Application granted granted Critical
Publication of KR960000940B1 publication Critical patent/KR960000940B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
    • B29C66/02241—Cutting, e.g. by using waterjets, or sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1226—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least one bevelled joint-segment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • B29C66/3242—Avoiding burr formation on the inside of a tubular or hollow article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91935—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined lower than said fusion temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • C08J5/121—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • B29C65/1416—Near-infrared radiation [NIR]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91216—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods enabling contactless temperature measurements, e.g. using a pyrometer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2081/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
    • C08J2381/02—Polythioethers; Polythioether-ethers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481—Disposition
    • H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item

Abstract

내용 없음.No content.

Description

폴리아릴렌 술파이드의 관형생산물 용접방법 및 용접관형구조물Method for welding tubular products of polyarylene sulfide and welded tubular structures

제1도는 내부테이퍼가 설치되어 있지 않은 관형생산물의 용접될 말단부의 말단부의 실시예에 대한 단면도이다.1 is a cross-sectional view of an embodiment of the distal end of a distal end to be welded in a tubular product without an inner taper.

제2도는 내부테이퍼가 설치되어 있는 관형생산물의 용접될 말단부의 실예에 대한 단면도이다.2 is a cross-sectional view of an example of a distal end to be welded of a tubular product provided with an inner taper.

제3도는 고온플레이트로 한쌍의 용접될 관형생산물 단면을 가열시키는 단면을 가열시키는 방법을 예시한다,3 illustrates a method of heating a cross section that heats a pair of tubular products to be welded with a hot plate.

제4도는 가열후 한쌍의 단면을 인접시키는 방법을 예시한다.4 illustrates a method of adjoining a pair of cross sections after heating.

제5도는 용접관형구조물의 실예에 대한 부분단면도이다.5 is a partial cross-sectional view of an example of a welded tubular structure.

[발명의 분야 및 관련 기술][Field of Invention and Related Technologies]

본원 발명은 폴리아릴렌 술파이드로 이루어진 관형생산물을 용접하는 방법에 관한 것으로서 용접점에 작은 내부비이드(bead)를 가지고, 상대적으로 큰 용접강도를 가지고, 양호한 작업효율에서 만약 있다면 적은 열변형을 하는 용접관형구조물을 제공하고 또한 그렇게 얻은 용접관형구조물에 관한 것이다.The present invention relates to a method for welding a tubular product made of polyarylene sulfide, which has a small internal bead at the welding point, has a relatively large welding strength, and has a small thermal deformation if any at good working efficiency. It provides a welded tubular structure and also relates to a welded tubular structure thus obtained.

열가소성수지의 관형생산물을 용접하는 여러 가지 방법이 개발되어 왔다. 대표적인 것에 소케트방법이 포함되는데 그것은 각각 소케트와 삽입물형상을 가진 한쌍의 튜브를 상호 조립해서 용접한다.Various methods have been developed for welding tubular products of thermoplastics. Representatives include the soket method, which assembles and welds a pair of tubes, each with a socket and an insert shape.

그리고 불소함유수지로 피복시킨 고온플레트가 용접할 표면을 상호 접착시키고 그 표면을 용융시킨후 압력하에서 결합시키는 방법이 있다.In addition, there is a method in which a hot plate coated with a fluorine-containing resin bonds the surfaces to be welded to each other, melts the surfaces, and bonds them under pressure.

그러나 어느방법도 생성된 용접물(즉, 용접부)가 다른부와 다른 모양을 가지는 문제점이 있다. 예를들면, 소케트방법에서는 용접표면 사이에 약간의 틈 또는 구멍이 생기는 것을 피할 수 없다. 그러한 틈 또는 구멍은 용접구조물이 초순수물과 접촉하면서 사용될 때 미생물이 증가하고 또한 작은 입자가 침적되기 쉽게 하기 때문에 용접구조물이 초순수물과 접촉하면서 사용될 때 미생물이 증가하고 또한 작은 입자가 침적되기 쉽게 하기 때문에 용접구조물은 그러한 용도에 사용하기에 적합하지 않다.However, either method has a problem in that the generated weld (that is, the weld) has a different shape from the other portion. For example, in the soket method, the formation of some gaps or holes between the welding surfaces is inevitable. Such gaps or holes increase the microorganisms when the welded structure is used in contact with the ultrapure water and also facilitate the deposition of small particles, thereby increasing the microorganisms when the welded structure is used in contact with the ultrapure water and also facilitate the deposition of small particles. As a result, welded structures are not suitable for use in such applications.

고온플레이트를 사용하는 방법에서는 압력하에서 결합하기 때문에 일반적으로 “비이드”라고 말하는 사출이음이 용접의 외부 및 내부에 생기고, 특별하게는 내부비이드가 소케트방법에서 형성된 틈과 유사하게 작은 입자의 침적 또는 미생물의 증가를 생기기 쉽게 한다. 고온플레이트를 사용하는 경우에 “코어”라고 불리는 내부지지체를 내부비이드의 발생을 방지하기 위해서 삽입하는 것으로 알려져 있다.그러나, 이 경우에 용접시킬 파이프의 내부크기와 동일한 크기를 가지는 코어를 삽입 또는 제거하는 것이 불가능하다.In high temperature plates, injection joints, commonly referred to as "beads," occur on the outside and inside of the weld because they bond under pressure. It is easy to cause deposition or increase of microorganisms. In the case of using a high temperature plate, it is known to insert an internal support called a "core" to prevent the occurrence of internal beads. However, in this case, a core having the same size as the internal size of the pipe to be welded is inserted or It is impossible to remove.

다른 한편, 만약에 파이프의 내부크기보다 작은 외부크기를 가진 코어를 코어의 삽입 또는 제거를 용이하게 하기 위해서 사용한다면 파이프와 코어의 내부크기 사이의 간격에 해당하는 비이드의 발생을 피하는 것이 불가능하다.On the other hand, if a core having an external size smaller than the internal size of the pipe is used to facilitate the insertion or removal of the core, it is impossible to avoid the occurrence of beads corresponding to the gap between the internal size of the pipe and the core. .

따라서, 내부비이드가 1mm를 초과하게 된다. 더욱이, 엘보우 또는 티(tee)와 같은 조립체를 용접하는 경우에 코어를 삽입하고 제거하기가 매우 어려워 작업효율이 나빠진다. 일본 공개 특허출원 번호 제 62-279925호에는 내부비이드가 생기지 않는 열가소성 불소함유 수지파이프를 용접하는 방법이 개시되어 있다.Therefore, the internal beads exceed 1 mm. Moreover, when welding assemblies such as elbows or tees, it is very difficult to insert and remove cores, resulting in poor working efficiency. Japanese Laid-Open Patent Application No. 62-279925 discloses a method of welding a thermoplastic fluorine-containing resin pipe in which internal beads are not formed.

그 방법에서는 단면을 고온공기로 가열하면서 열변형을 피하기 위해서 외부표면에서부터 내부표면으로 감소하는 테이퍼를 각각 가지는 단면을 가진 한쌍의 파이프를 상호 용접시킨다. 그러나, 만약 그 방법을 폴리아릴렌 술파이드 파이프의 용접에 적용한다면 폴리아일렌 술파이드의 일반적으로 우수한 내열성에도 불구하고 고온으로 가열하는 동안에 술파이드부가 산화되어서 열변형이 생기는 것을 피할 수가 없어 용접물이 갈색으로 변색된다.The method welds a pair of pipes with cross sections each having a taper that decreases from the outer surface to the inner surface to avoid thermal deformation while heating the cross section with hot air. However, if the method is applied to the welding of polyarylene sulfide pipes, despite the generally good heat resistance of polyylene sulfides, it is inevitable that the sulfide portion oxidizes during thermal heating to avoid thermal deformation and thus the weld is brown. Discolored.

폴리아리렌 술파이드 파이프를 버트(butt)용접하는 경우에 보다 높은 용접강도는 보다 큰 인접압박에서 얻어진다는 다른 어려움이 있으나 그것은 불가피하게 보다 큰 비이드가 생긴다. 따라서, 작은 비이드를 가지면서 비교적 높은 용융강도를 유지하는 용접물을 생산하는 것이 어렵다.In the butt welding of polyarylene sulfide pipes, there is another difficulty in that higher weld strengths are obtained at larger adjacent pressures, but this inevitably results in larger beads. Therefore, it is difficult to produce a weldment having a small bead while maintaining a relatively high melt strength.

[발명의 요약][Summary of invention]

본원 발명의 목적은 폴리아리렌 술파이드의 관형생산물이 만약 있다면 작은 비이드를 가지면서 양호한 작업효율에서 작은 열변형을 가지고 비교적 높은 용융강도를 보이는 용융물을 제공하도록 용접될 수 있는 용접방법 및 그렇게 얻어진 용접관형 구조물을 제공하는 것이다.It is an object of the present invention to provide a welding method which can be welded to provide a melt which exhibits a relatively high melt strength with a small thermal deformation at a good working efficiency with a small bead if the tubular product of polyarylene sulfide, if any To provide a welded tubular structure.

본원 발명에 의해서 이하의 단계로 이루어진 폴리아릴렌 술파이드의 관형생산물을 용접하는 방법이 제공된다:According to the present invention there is provided a method for welding a tubular product of polyarylene sulfide consisting of the following steps:

상호간에 용접될 단면을 가지고 용융개시온도와 용융열흡수 피이크온도를 나타내는 폴리아리렌 술파이드로 된 한쌍의 관형생산물을 준비하고, 단면끼리 접촉시키지 않으면 고온플레이트에 의해 단면을 가열하고, 그리고 단면의 표면온도가 각각 폴리아릴렌 술파이드의 용융개시온도보다 적어도 10℃이상이고 용융열 흡수 피이크온도를 초과하지 않을 때 압력하에서 단면을 인접시켜서 용접물을 형성시킨다. 이 경우 상호 용접시킬 단면의 표면온도를 각각 폴리아릴렌 술파이드의 적어도 용융열흡수 피이크온도이고 용융열흡수 피이크온도 보다 많아야 80℃이상까지 단면을 가열하고, 단면에서부터 고온플레이트를 제거한후 약 50 내지 1500kPa(0.5-15kg/cm²)의 압력에서 단면을 상호 인접시키는 단계를 포함하는 것이 바람직하다.Prepare a pair of tubular products of polyarylene sulfide having cross sections to be welded to each other and exhibit melting start temperature and melt heat absorption peak temperature, and if the sections are not in contact with each other, the sections are heated by a high temperature plate, and The welds are formed by adjoining the cross-sections under pressure when the surface temperatures are at least 10 ° C. above the melting initiation temperature of the polyarylene sulfide, respectively, and do not exceed the melting heat absorption peak temperature. In this case, the surface temperature of the cross sections to be welded to each other should be at least the melt heat absorption peak temperature of the polyarylene sulfide and higher than the melt heat absorption peak temperature, so that the cross section is heated to 80 ° C. or higher, and the high temperature plate is removed from the cross section. It is preferred to include adjoining the cross sections at a pressure of 1500 kPa (0.5-15 kg / cm 2).

본원 발명의 다른 양상에 의해서, 실질적으로 변색되지 않고, 만약 있다면 많아야 1mm 높이의 내부비이드를 가지고, 관형생산물 자체의 적어도 50%에 해당하는 인장강도를 가진 용접으로 상호 용접된 폴리아릴렌 술파이드로 된 한쌍의 관형생산물로 이루어진 용접관형구조물이 제공된다.According to another aspect of the present invention, polyarylene sulfides which are substantially discolored and which are welded to each other by welding, having internal beads of at most 1 mm height and having a tensile strength of at least 50% of the tubular product itself, if any There is provided a welded tubular structure consisting of a pair of tubular products.

본원 발명에서 용접시킬 폴리아릴렌 술파이드로 된 관형생산물의 단면을 단면끼리 접촉시키지 않고 고온플레이트에 의해서 가열시킨다.In this invention, the cross section of the tubular product of the polyarylene sulfide to be welded is heated by a high temperature plate without the cross sections contacting each other.

이 경우 상기한 선행기술방법에서 고온공기로 가열시키는 것과는 달리 고온플레이트를 둘러싸는 공기가 차갑고, 온도가 오직 방사능열에 의해서만 과도하게 증가하지 않기 때문에 폴리아릴렌 술파이드가 용이하게 산화되어서 열변형을 일으키지 않는다.In this case, unlike the heating in the above-mentioned prior art method, the air surrounding the hot plate is cold and the polyarylene sulfide is easily oxidized because the temperature is not excessively increased only by radioactive heat, thereby causing thermal deformation. Do not.

더욱이, 단면을 용융상으로 가열시키고 특정한 온도에서 용접시킴으로써 작은 내부 비이드를 가지면서 높은 용접강도인수를 보이는 용접물이 형성될 수 있다. 여기서, “용접강도인수”라는 용어는 용접관형구조물을 아령모양 견본으로 각각 절단한 다른 부분의 인장 강도(즉, 관형생산물 자체의 인장강도)에 대한 용접점의 인장강도 비율을 백분율로 나타낸 것이다. 본원 발명의 다른 목적, 특징 및 이점은 이하에서 첨부도면을 참조해서 기술한 바람직한 실시예에 의해서 더욱 명확해질 것이다.Furthermore, by heating the cross section to the molten phase and welding at a certain temperature, a weldment having a small internal bead and exhibiting a high weld strength factor can be formed. Here, the term “weld strength factor” refers to the ratio of the tensile strength of the welding point to the tensile strength of the other portions (ie, the tensile strength of the tubular product itself) in which the welded tubular structure is cut into dumbbell-shaped specimens, respectively. Other objects, features and advantages of the present invention will become more apparent from the preferred embodiments described below with reference to the accompanying drawings.

여기서, “폴리아릴렌 술파이드”라는 용어는 주구성성분으로서 -Ar-S-로 나타내지는 반복단위를 가지는 중합체를 의미한다. 여기서 -Ar-은 아릴렌기를 나타내며 광의로는 p-페닐렌, m-페닐렌, 나프탈렌, 및 -Ph-Co-Ph-(여기서, “-Ph-”은 이하에서와 같이 페닐렌기를 나타낸다), -Ph-O-Ph-, -Ph-CH₂-Ph, 및 -Ph -SO₂-Ph와 같이 6개의 탄소원자를 가진 적어도 2개의 방향족고리를 포함하는 2가의 방향족잔기를 포함한다.Here, the term "polyarylene sulfide" means a polymer having a repeating unit represented by -Ar-S- as a main component. Wherein -Ar- represents an arylene group, and broadly p-phenylene, m-phenylene, naphthalene, and -Ph-Co-Ph- (wherein "-Ph-" represents a phenylene group as follows) Divalent aromatic residues containing at least two aromatic rings having six carbon atoms, such as -Ph-O-Ph-, -Ph-CH₂-Ph, and -Ph -SO₂-Ph.

각 방향족고리는 알킬기 또는 카르복실기와 같은 치환체를 더 포함할 수 있다. 폴리아릴렌 술파이드는 단일중합체, 임의 공중합체 블록공중합체의 형태를 가질 수 있다. 폴리아릴렌 술파이드는 바람직하게는 주구성성분으로서 특별하게는 파라-페닐렌 술파이드기인 페닐렌 술파이드로 이루어진 것이다.Each aromatic ring may further include a substituent such as an alkyl group or a carboxyl group. Polyarylene sulfides may take the form of homopolymers, optional copolymer block copolymers. The polyarylene sulfide is preferably composed of phenylene sulfide, which is a para-phenylene sulfide group, particularly as a main component.

여기서, “주구성성분”이란 “-Ar-S-”을 단위몰로 취하였을시 그 구성성분이 적어도 50단위몰%, 바람직하게는 적어도 70단위몰%, 보다 바람직하게는 적어도 90단위몰%를 점하는 것을 의미한다. 폴리아릴렌 술파이드는 주구성성분으로 2중작용성 단량체로 이루어지고 보다 적은 구성성분으로 3중 또는 보다 높은 작용성기를 포함할 수 있는 실질적으로 선형중합체인 것이 바람직하다. 폴리아릴렌 술파이드는 원하는 기계적 강도를 제공하기에 충분히 높은 분자량을 가질 수 있다.Here, the term “main constituent” means that at least 50 units mole%, preferably at least 70 unit mole%, and more preferably at least 90 unit mole% when “-Ar-S-” is taken as unit moles. Means to point. It is preferred that the polyarylene sulfide is a substantially linear polymer consisting of bifunctional monomers as its main constituents and containing tri- or higher functional groups with less constituents. The polyarylene sulfide may have a molecular weight that is high enough to provide the desired mechanical strength.

여기서, 폴리아릴렌 술파이드로 된 관형생산물은 오직 폴리아릴렌 술파이드만으로 구성된 생산물을 포함할 수 있고 또한 폴리아릴렌 술파이드와 내충격수정제, 보강섬유 또는 무기충전제와 같은 다른 성분으로 이루어진 조성물로 구성된 생산물을 포함할수 있다. 관형생산물은 파이프, 이음매 및 밸브를 포함하는 관형부를 가진 생산물을 포함한다. 그러한 관형생산물은 압출 및 주입과 같은 일반적인 성형 또는 형성방법을 통해서 제조될 수 있다.Here, the tubular product made of polyarylene sulfide may include a product composed only of polyarylene sulfide, and is also composed of a composition consisting of polyarylene sulfide and other components such as impact modifiers, reinforcing fibers or inorganic fillers. It can include a configured product. Tubular products include products with tubular portions that include pipes, seams, and valves. Such tubular products can be produced through common molding or forming methods such as extrusion and injection.

관형생산물의 단면모양은 대부분 원형이나 장축/단축비율이 약 1.2 또는 그보다 작은 타원형 또는 다각형을 포함하는 프로필모양을 수 있다.The cross-sectional shape of the tubular product may be in the form of a profile, most often circular or elliptical or polygonal, with a major / short ratio of about 1.2 or less.

본원 발명에 의해서 10-250mm의 직경(동일단면적을 가지는 원형으로 계산) 및 1-10mm의 두께를 가지는 관형생산물이 편리하게 용접될 수 있다.According to the present invention, a tubular product having a diameter of 10-250 mm (calculated as a circle having the same cross-sectional area) and a thickness of 1-10 mm can be conveniently welded.

용접시킬 관형생산물의 각 말단은 내부비이드를 더 감소시키기 위해서 내부테이퍼 또는 절단부분이 설치될 수 있다. 제1도는 그러한 내부테이퍼가 설치되지 않아서 파이프두께 D와 동일한 폭 또는 두께를 자기고 직각단면(2)가 형성된 관형 생산물(파이프)의 용접될 말단부의 실예에 대한 단면도이다.Each end of the tubular product to be welded may be provided with an internal taper or cutout to further reduce internal beads. FIG. 1 is a cross sectional view of an example of a distal end portion to be welded of a tubular product (pipe) in which no inner taper is installed so that it has the same width or thickness as the pipe thickness D and is formed at right angles.

제2도는 내부절단부분(6)이 설치되어 있어서 파이프두께 D보다 작은 좁은 폭 d를 가지는 좁은 단면(4)를 가지고 단면(4)에 대해서 내부테이퍼 각 θ를 형성하는 테이퍼부(3)가 형성된 관형생산물(파이프)의 용접될 말단부의 실예에 대한 단면도이다. 제2도에서, 관형생산물(1)의 용접될 단면은 그것의 주변모서리의 전체 길이를 따라 내부절단부분(6)이 설치되어 있다.2 shows a tapered portion 3 having a narrow cross section 4 having a narrow width d smaller than the pipe thickness D and having an inner taper angle θ with respect to the cross section 4 having an inner cutout 6 provided therein. A cross-sectional view of an example of a distal end of a tubular product (pipe) to be welded. In FIG. 2, the cross section to be welded of the tubular product 1 is provided with an internal cutout 6 along the entire length of its peripheral edge.

내부절단부분(6)은 나머지 테이퍼부(3)의 용적보다 크지 않은 그러나 적어도 1/20의 용적으로 형성되는 것이 바람직하다. 내부절단부분(6)을 형성후에 남는 단면(4)은 극단적인 경우에만 그것의 외부주면(거의 제로의 두께 또는 폭을 가지는)을 가질 수 있으나 바람직하게는 어떤 두께 또는 폭을 가질 수 있다. 보다 구체적으로는 내부절단부분(6)을 형성후에 남는 용접될 단면(4)은 그 폭 d가 파이프폭 D의 적어도 1/3이 바람직하고, 보다 바람직하게는 적어도 2/5이다.The internal cutout 6 is preferably formed in a volume of not less than the volume of the remaining tapered portion 3 but of at least 1/20. The cross section 4 which remains after forming the inner cut 6 may have its outer circumferential surface (with almost zero thickness or width) only in extreme cases but preferably may have any thickness or width. More specifically, the end face 4 to be welded after forming the internal cutout 6 has a width d of at least 1/3 of the pipe width D, more preferably at least 2/5.

내부테이퍼각 θ은 10-70도, 바람직하게는 20-70도, 특별히 바람직하게는 30-45도의 범위 일 수 있다. 내부절단후에 단면(4)를 세척해서 절단찌꺼기를 제거하고 다음에 용접을 할 준비를 해야한다.The internal taper angle θ may be in the range of 10-70 degrees, preferably 20-70 degrees, particularly preferably 30-45 degrees. After internal cutting the cross section (4) should be cleaned to remove the cutting chips and ready for the next weld.

본원발명에 의해서, 그러한 관형생산물의 용접할 한쌍의 단면은 단면끼리 접촉시키지 않고 고온플레이트로 가열시킨다. 보다 구체적으로는 제2도의 실예와 동일한 제3도에서 보는 바와같이 한쌍의 관형생산물(1a) 및 (1b)의 서로 용접될 단면(4a) 및 (4b)는 상호간에 분리되어 있고 단면(4a)와 (4b) 사이의 중간에 배치되고 각각 가열표면을 구성하는 2개의 주표면을 가지는 고온플레이트(7)로 가열된다.According to the present invention, a pair of cross sections to be welded of such a tubular product is heated by a hot plate without contact between the cross sections. More specifically, as shown in FIG. 3, which is the same as the example of FIG. 2, the end faces 4a and 4b of the pair of tubular products 1a and 1b to be welded to each other are separated from each other and the end face 4a It is heated by the high temperature plate 7 which is arranged in the middle between and 4b and has two main surfaces, each of which constitutes a heating surface.

부수적으로 상호 용접할 한쌍의 단면을 가열시키기 위해서 상술한 2개의 가열표면을 가지는 단일 고온플레이트 대신에 유사한 표면온도를 가지는 2개의 고온플레이트를 사용하는 것도 물론 가능하다.It is of course also possible to use two hot plates having similar surface temperatures instead of a single hot plate having the two heating surfaces described above to heat the pair of cross sections to be welded to each other.

단면은 그 표면온도를 폴리아릴렌 술파이드의 적어도 용융열흡수 피이크온도이고 용융 열흡수 피이크온도 보다 많아야 80℃이상으로 가열하는 것이 바람직하다.It is preferable that the cross section be heated to 80 ° C. or higher at a surface temperature of at least the melt heat absorption peak temperature of the polyarylene sulfide and higher than the melt heat absorption peak temperature.

만약 그 온도가 용융열흡수 피이크온도보다 80℃ 이상을 초과하면 폴리아릴렌 술파이드의 열분해가 생기기 쉽다. 여기서 용융열흡수 피이크온도는 차동감시열량계 (DSC)(“DSC-30”Mettler instrumente A.G.에서 입수가능)에서 10℃/분의 온도증가비율에서 시료를 가열했을 때 시료 폴리아릴렌 술파이드의 용융열흡수 피이크온도를 의미한다.If the temperature exceeds 80 ° C. or more above the melt heat absorption peak temperature, thermal decomposition of polyarylene sulfide is likely to occur. The heat absorption peak temperature is the heat of fusion of the sample polyarylene sulfide when the sample is heated at a temperature increase rate of 10 ° C / min in a differential monitoring calorimeter (DSC) (available from “DSC-30” Mettler instrumente AG). Absorption peak temperature.

고온플레이트(7)에는 그안에 로드히터가 끼워진 금속히터, 세라믹히터 및 캐스트히터가 포함된다. 상호용접할 관형생산물(1a),(1b)의 각 단면(4a),(4b)와 고온 플레이트(7) 사이의 거리 L은 보통 다양한 mm 또는 보다 짧게, 보다 구체적으로는 많아야 3mm, 바람직하게는 많아야 2mm, 보다 바람직하게는 많아야 1mm이며, 한편 그것은 고온플레이트의 타입, 고온플레이트의 온도 및 가열시간과 같은 다른 요인에 따라서 어느정도 달라질 수 있다. 가열시간은 그것이 고온플레이트의 온도에 좌우되기 때문에 특별히 제한하지 않으나 보통 3분 또는 그보다 짧으며, 바람직하게는 2분 또는 그보다 짧다.The high temperature plate 7 includes a metal heater, a ceramic heater and a cast heater in which a rod heater is inserted. The distance L between each end face 4a, 4b of the tubular products 1a, 1b to be welded to the hot plate 7 is usually various mm or shorter, more specifically at most 3 mm, preferably At most 2 mm, more preferably at most 1 mm, while it may vary to some extent depending on other factors such as the type of hot plate, the temperature of the hot plate and the heating time. The heating time is not particularly limited because it depends on the temperature of the hot plate, but is usually 3 minutes or shorter, preferably 2 minutes or shorter.

다음에 고온플레이트(7)은 상호 용접할 단면(4a) 및 (4b)로부터 보통 그 단면에 평행한 방향 즉, 화살표 A로 나타나는 수직방향으로 수직으로 또는 수평하게 제거된다.The hot plates 7 are then removed from the sections 4a and 4b to be welded together, either vertically or horizontally in a direction usually parallel to that section, ie in the vertical direction indicated by arrow A. FIG.

다음에 관형생산물을 화살표 B방향으로 상호 접근시켜서 단면이 폴리아릴렌 술파이드의 용융상을 나타내는 지정된 온도에 있는 동안 제4도에서 나타내는 것과 같이 단면 (4a)와 (4b)를 상호 인접시킨다. 보다 구체적으로, 인접 즉 용접의 온도는 각각 폴리아릴렌 술파이드의 용융개시온도보다 적어도 10℃ 이상이고 용융열흡수 피이크온도를 초과하지 않는 온도이다. 그 온도는 바람직하게는 용융개시온도보다 적어도 15℃이상이고 용융열흡수 피이크온도보다 적어도 2℃ 낮다.The tubular products are then mutually approached in the direction of arrow B so that the sections 4a and 4b are adjacent to each other as shown in FIG. 4 while the sections are at a specified temperature representing the molten phase of the polyarylene sulfide. More specifically, the temperature of the adjoining, ie, welding, is at least 10 ° C. or more above the melting start temperature of the polyarylene sulfide and does not exceed the melting heat absorption peak temperature. The temperature is preferably at least 15 ° C. or higher than the melting start temperature and at least 2 ° C. below the melt heat absorption peak temperature.

여기서, 용융개시온도란 10℃/분의 온도상승비율에서 차동감시열량계 (“DSC -30” Metter Instrumente A.G.에서 입수가능)에 의해 측정하였을때 DSC 커브상에서 시료폴리아릴렌 술파이드와 용융 때문에 열흡수커브가 발생하기 시작하는 온도를 의미한다.Here, the melt initiation temperature is the heat absorption due to melting with the sample polyarylene sulfide on the DSC curve as measured by a differential monitoring calorimeter (available from “DSC-30” Metter Instrumente AG) at a rate of temperature rise of 10 ° C./min. The temperature at which the curve starts to occur.

용접은 인접압박을 행하면서 실행되는데 그것은 파이프(1a) 및 (1b)의 원두께 D로 주어지는 면적상에 가해지는 압력으로 계산하였을 때 보통 약 50-1500kPa (0.5-15kg/cm²), 바람직하게는 약 70-1200kPa(0.7-12kg/cm²), 보다 바람직하게는 약100-500kPa(1-5kg/cm²)이다. 만약 압력이 50kPa 이하이면 충분한 용접강도를 얻기가 어렵고, 1500kPa를 초과하면 대단히 큰 내부비이드가 생기기 쉽다.Welding is carried out with adjacent compression, which is usually about 50-1500 kPa (0.5-15 kg / cm²), preferably calculated as the pressure exerted on the area given by the thicknesses D of the pipes 1a and 1b. About 70-1200 kPa (0.7-12 kg / cm 2), more preferably about 100-500 kPa (1-5 kg / cm 2). If the pressure is 50 kPa or less, it is difficult to obtain sufficient welding strength, and if it exceeds 1500 kPa, very large internal beads are likely to be produced.

상술한 압력범위내에서 용접을 행함으로써 적절하게 선택된 조건하에서 관형생산물(1a) 또는 (1b)자체 인장강도의 적어도 50%, 바람직하게는 80%의 인장강도를 보여주고 아직 작은 비이드만을 형성하는 용접물을 만드는 것이 가능하다.By welding within the above-mentioned pressure range, the tubular product 1a or 1b exhibits a tensile strength of at least 50%, preferably 80%, of its own tensile strength under appropriately selected conditions and forms only small beads. It is possible to make a weldment.

특별하게 내부절단부분(6)이 제2도 및 제3도에 도시된 바와같이 형성되는 때에는 단면(4a)와 (4b)는 대부분의 나머지테이퍼(3)가 인접압박하에서 내부절단부분(6)을 채우고 그 일부가 생성된 용접관형구조물의 밖으로 튀어나와서 만약 있다면 평평하고 보다 작은 높은 h를 나타내는 내부비이드(9)를 형성하거나 충분히 큰 용접강도인수를 보이는 용접물을 형성하도록 상호간 용접이 된다.Particularly when the internal cutouts 6 are formed as shown in FIGS. 2 and 3, the end faces 4a and 4b have the internal cutouts 6 with most of the remaining taper 3 adjoined under pressure. And a portion of it protrudes out of the resulting welded tubular structure, which is then welded together to form an inner bead 9 which is flat and if present exhibits a smaller, higher h, or a weld showing a sufficiently large weld strength factor.

그러한 외부비이드(8)에 의해서 형성되는 외부의 불균일함은 용접관형구조물의 필수적인 기능에 악영향을 미치지 않는다. 다른 한편, 원하지 않는 오염 또는 침적이 관형구조물안에 생기게 할 수 있는 내부비이드(9)의 높이 h는 본원 발명에 의해서 많아야 1mm로 억제된다. 더욱이, 생성된 용접물은 가열시 고온공기를 사용해서 용접하는 경우에 눈으로 용이하게 관찰되는 갈색변화와 같은 변색이 실질적으로 생기지 않는다.The external nonuniformity formed by such external beads 8 does not adversely affect the essential function of the welded tubular structure. On the other hand, the height h of the inner bead 9, which can cause unwanted contamination or deposition in the tubular structure, is suppressed at most 1 mm by the present invention. Moreover, the resultant weld material is substantially free of discoloration such as brown change, which is easily observed by the eye when welding using hot air during heating.

이하에서 실시예와 비교실시예를 참고해서 본원 발명을 보다 구체적으로 기술하기로 한다.Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[시험방법][Test Methods]

이하에서 인장강도는 관형샘플이 염화비닐수지 대신 폴리아릴렌 술파이드로 구성된 것으로 변경시킨 것을 제외하고는 JIS-K6724에 의해서 측정한 값에 기초한 것이다. 편리하게 하기 위해서 관형생산물의 원두께를 용접부분의 단위면적에 대한 인장강도를 계산하는 기초로서 용접부분 단면적을 계산하는데 이용하였다.In the following, the tensile strength is based on the value measured by JIS-K6724, except that the tubular sample was changed to be composed of polyarylene sulfide instead of vinyl chloride resin. For convenience, the original thickness of the tubular product was used to calculate the weld cross-sectional area as the basis for calculating the tensile strength of the welded unit area.

단면온도와 고온플레이트 표면온도는 각각 열전기쌍 (“MOBAC 220”Nireco K.K.에서 입수가능)과 접촉형 표면온도측정기(“Pocket Thermometer-Model 2542 ”Yokogawa Denki K.K.에서 입수가능)를 이용해서 측정한 값이다.The cross-sectional temperature and the hot plate surface temperature were measured using a thermocouple (available from the MOBAC 220 Nireco KK) and a contact surface temperature gauge (available from the Pocket Thermometer-Model 2542 Yokogawa Denki KK). .

정확성을 기하기 위해서 단면도는 가열후 실제적으로 용접을 받아 샘플관형생산물과 동일한 조건하에서 가열된 샘플관형생산물에 대해서 측정하였다.For the sake of accuracy, the cross section was measured on the sample tubular product which was actually welded and then heated under the same conditions as the sample tubular product.

[실시예 1]Example 1

폴리아릴렌 술파이드(310℃에서 약 2.8kPa.sec(28000 포이즈)의 용융점도, 200/초의 전단율, 220℃의 용융개시온도이고, 그리고 277℃의 용융열흡수 피이크온도를 가진다)를 단일-스크류 펠레타이저로 펠레트화시킨다. 그 펠레이트를 140℃에서 3시간동안 건조시켜서 물 및 휘발성물질을 제거시킨다. 다이입구에서의 수지온도는 330℃이고 다이출구에서는 약 310℃이다.Single polyarylene sulfide (melt viscosity of about 2.8 kPa.sec (28000 poise) at 310 ° C., shear rate of 200 / sec, melt onset temperature of 220 ° C., and melt heat absorption peak temperature of 277 ° C.) Pelletize with a screw pelletizer. The pelate is dried at 140 ° C. for 3 hours to remove water and volatiles. The resin temperature at the die inlet is 330 ° C. and about 310 ° C. at the die outlet.

펠레트를 다이에 외부축이 장착되어 있고 250-330℃로 고정된 실린더온도를 가진 소형단일스크류 사출형성기(내부직경:35mm)에 공급하고 사출성형시킨다. 사출형성은 π/2rad.sec-1(15rpm)의 각 속도를 나타내는 스크류회전속도에서 행하고, 이어서 크기를 3% sec-1방사상으로 뽑고 물로 냉각해서 파이프를 제조한다.The pellets are fed into a single screw injection molding machine (inner diameter: 35 mm) with an external shaft mounted on the die and having a cylinder temperature fixed at 250-330 ° C. and injection molded. Injection molding is performed at a screw rotational speed representing an angular velocity of π / 2rad.sec −1 (15 rpm), followed by drawing the size 3% sec −1 radially and cooling with water to produce a pipe.

그것은 내부직경이 26mm이고 두께가 3mm이며 부드러운 내부표면을 가진다. 그렇게 해서 제조한 2개의 파이프를 내부절단부분 두께(D-d)가 1mm이고 내부테이퍼 각(θ)가 30도가 되도록 모서리작업을 시킨다. 그렇게 형성시킨 내부테이퍼가 각각 설치된 2개의 단면을 거리를 두고 서로 마주보게 배치하고 450℃의 표면온도를 각각 가지는 2개의 표면을 가진 세라믹히터를 각 단면으로부터 1mm의 공간 L이 되도록 놓는다. 이어서 단면을 35초동안 284℃(최대가열온도)까지 가열시킨다.It has an inner diameter of 26mm, a thickness of 3mm and a smooth inner surface. The two pipes thus fabricated were cornered so that the thickness of the internal cutout portion (D-d) was 1 mm and the internal taper angle (θ) was 30 degrees. Two cross sections each having the inner taper thus formed are disposed to face each other at a distance, and a ceramic heater having two surfaces each having a surface temperature of 450 ° C. is placed so as to have a space L of 1 mm from each cross section. The cross section is then heated to 284 ° C. (maximum heating temperature) for 35 seconds.

다음에 히터를 제거하고 단면온도가 268℃(용접온도)인 때에1100kPa (11.0 kg/cm²)의 인접압박에서 파이프의 단면을 상호 인접시킨다.The heaters are then removed and the sections of the pipes are adjacent to each other at an adjacent pressure of 1100 kPa (11.0 kg / cm²) when the section temperature is 268 ° C (welding temperature).

생성된 용접관형구조물(파이프)는 내부비이드높이(h)가 0.9mm이고 변색되지 않고 따라서 열변형흔적을 보이지 않는 용접점이 제공된다. 2종류의 아령모양 견본을 하나는 용접점을 포함하는 부분에서 다른 하나는 다른 부분에서 절단한다. 용접부분은 52MN/m²(5.3kg/mm²)의 인장강도를 보였고 다른 견본은 원파이프자체와 같이 62MN/m²(6.3kg/mm²)의 인장강도를 보였다.The resulting welded tubular structure (pipe) is provided with a weld point where the internal bead height h is 0.9 mm and does not discolor and thus exhibits no thermal deformation traces. Two types of dumbbell-shaped specimens are cut, one at the part containing the welding point and the other at the other part. The welds showed a tensile strength of 52MN / m² (5.3kg / mm²) and the other specimens showed a tensile strength of 62MN / m² (6.3kg / mm²) like the one pipe itself.

결론적으로 용접구조물은 84%의 용접강도인수를 보였다. 이하의 표 1은 이후에 기술한 다른 실시예 및 비교실시예와 함께 대표적인 조건 및 결과를 요약하고 있다.In conclusion, the welded structure showed 84% weld strength factor. Table 1 below summarizes representative conditions and results with other examples and comparative examples described below.

[표 1]TABLE 1

[실시예 2]Example 2

실시예 1과 동일한 방법으로 제조한 폴리페릴렌 술파이드로 된 2개의 파이프의 모서리작업을 해서 내부절단부분두께가 1mm이고 내부테이퍼각이 45도가 되도록 한다. 그렇게 처리한 2개의 파이프를 실시예 1과 동일한 방법으로 상호간에 용접을 시킨다. 생성된 용접구조물은 내부비이드높이가 0.45mm이고 변색되지 않고 따라서 열변형흔적을 보이지 않는 용접점이 제공된다. 또한 그 용접점은 80%의 용접강도인수에 해당하는 49.3MN/m²(5.0kg/mm²)의 인장강도를 보여준다.The two pipes made of polyperylene sulfide prepared in the same manner as in Example 1 were edged so that the inner cutting thickness was 1 mm and the inner taper angle was 45 degrees. The two pipes thus treated are welded to each other in the same manner as in Example 1. The resulting welded structure was provided with a weld point with an internal bead height of 0.45 mm and no discoloration and thus no thermal strain traces. The weld also shows a tensile strength of 49.3 MN / m² (5.0 kg / mm²), which corresponds to a weld strength factor of 80%.

[실시예 3]Example 3

내부테이퍼각이 45도이고, 내부절단부분 두께가 0.5mm이고 단면이 40초동안 가열되는 것을 제외하고는 실시예 1과 유사한 방법으로 2개의 파이프를 제조하고 모서리작업을 하고 상호간에 용접시켰다.Two pipes were prepared, edged and welded to each other in a manner similar to Example 1 except that the inner taper angle was 45 degrees, the inner cut thickness was 0.5 mm and the cross section was heated for 40 seconds.

생선된 용접구조물은 내부비이드높이가 0.9mm이고 변색되지 않고 따라서 열변형흔적을 보이지 않는 용접점이 제공된다. 그 용접점은 84%의 용접강도인수에 해당하는 52MN/m²(5.3kg/mm²)의 인장강도를 보여준다.The welded welded structure is provided with a weld point with an internal bead height of 0.9 mm that does not discolor and thus exhibits no thermal strain traces. The weld shows a tensile strength of 52 MN / m² (5.3 kg / mm²), corresponding to a weld strength factor of 84%.

[비교실시예]Comparative Example

내부테이퍼각이 45도이고, 내부절단부분 두께가 0.5mm이고 단면이 50초동안 가열되는 것을 제외하고는 실시예 1과 유사한 방법으로 2개의 파이프를 제조하고 모서리작업을 하고 상호간에 용접시켰다.Two pipes were prepared, cornered and welded to each other in a manner similar to Example 1 except that the inner taper angle was 45 degrees, the inner cut thickness was 0.5 mm and the cross section was heated for 50 seconds.

용접온도는 결과적으로 285℃였다. 생성된 용접구조물은 변색되지 않고 따라서 열변형흔적을 보이지 않는 용접점이 제공된다. 그 용접점은 100%의 용접강도인수에 해당하는 62MN/m²(6.3kg/mm²)의 인장강도를 보여준다. 그러나 내부비이드높이가 1.2mm까지 증가하였다.The welding temperature was 285 ° C. as a result. The resulting welded structure is provided with a weld that does not discolor and thus exhibits no thermal strain traces. The weld shows a tensile strength of 62 MN / m² (6.3 kg / mm²), corresponding to a weld strength factor of 100%. However, the internal bead height increased to 1.2 mm.

상술한 바와같이, 본원 발명에 의해서 열적산화변형에 의한 변색이 생기지 않고 만약 있다면 많아야 1mm높이를 보이는 내부비이드를 가지고 적어도 50%의 용접강도 인수를 보이는 용접점을 가지는 용접관형구조물이 제공가능해진다.As described above, according to the present invention, it is possible to provide a welded tubular structure which does not cause discoloration due to thermal oxidation deformation, and if any, has an internal bead having a height of at most 1 mm and a weld point having a weld strength factor of at least 50%. .

그 용접방법은 작업이 용이하고 엘보우 또는 티와 같은 조립체의 용접에 용이하게 적용할 수 있다. 결론적으로 초순수물을 이송시키는 파이프로서 특별히 적합한 용접관형구조물을 제공하는 것이 가능하다.The welding method is easy to work with and can be easily applied to welding of assemblies such as elbows or tees. In conclusion, it is possible to provide a welded tubular structure that is particularly suitable as a pipe for transporting ultrapure water.

Claims (8)

상호간에 용접될 단면을 가지고 용융개시온도와 용융열흡수 피이크온도를 나타내는 폴리아릴렌 술파이드로 된 한상의 관형생산물을 준비하고, 단면끼리 접촉시키지 않으면서 고온플레이트에 의해 단면을 가열하고, 그리고 단면의 표면온도가 각각 폴리아릴렌 술파이드의 용융개시온도보다 적어도 10℃ 이상이고 용융열흡수 피이크온도를 초과하지 않을 때 압력하에서 단면을 인접시켜서 용접물을 형성시키는 단계로 이루어진 것을 특징으로 하는 폴리아릴렌 술파이드된 관형생산물을 용접시키는 방법.Preparing a tubular product of polyarylene sulfide having cross sections to be welded to each other and showing melting start temperature and melt heat absorption peak temperature, and heating the cross sections by a high temperature plate without contacting the cross sections, and Forming a weldment by adjoining the cross section under pressure when the surface temperature of the polyarylene sulfide is at least 10 ° C. or more than the melting start temperature of the polyarylene sulfide and does not exceed the melt heat absorption peak temperature. A method of welding sulfided tubular products. 제1항에 있어서, 단면을 그 표면온도가 각각 폴리아릴렌 술파이드의 적어도 용융열흡수 피이크온도이고 용융열흡수 피이크온도보다 많아야 80℃ 이상이 될 때까지 가열시키고, 이어서 고온플레이트를 단면으로부터 제거한후, 약 50 내지 1500kPa (0.5-15kg/cm²)의 압력에서 단면을 상호 인접시키는 것을 특징으로 하는 방법.The cross section of claim 1 wherein the cross section is heated until its surface temperature is at least the melt heat absorption peak temperature of the polyarylene sulfide and is at least 80 ° C. or higher than the melt heat absorption peak temperature, and then the hot plate is removed from the cross section. And then adjoining the cross sections at a pressure of about 50 to 1500 kPa (0.5-15 kg / cm²). 제1항 또는 제2항에 있어서, 용접시킬 관형생산물의 각 단면에 내부모서리를 절단해서 형성시킨 내부테이퍼가 설치되고 이어서 가열 및 인접을 시키는 것을 특징으로 하는 방법.The method according to claim 1 or 2, wherein an inner taper formed by cutting an inner edge is formed at each end face of the tubular product to be welded, and then heated and adjacent thereto. 제1항에 있어서, 용접시킬 관형생산물의 각 단면에 내부모서리를 절단해서 형성시킨 내부테이퍼가 설치되어서 단면이 관형생산물 자체두께의 적어도 1/3두께를 가지고 내부테이퍼가 단면에 대해서 10-70도의 내부테이퍼각을 나타내는 것을 특징으로 하는 방법.2. The taper according to claim 1, wherein an inner taper formed by cutting an inner edge is provided in each cross section of the tubular product to be welded so that the cross section has at least one third the thickness of the tubular product itself, and the inner taper is 10-70 degrees with respect to the cross section. And an inner taper angle. 제4항에 있어서, 내부테이퍼각이 20-60도인 것을 특징으로 하는 방법.5. The method of claim 4, wherein the inner taper angle is 20-60 degrees. 제1항에 있어서, 단면의 표면온도가 각각 폴리아릴렌 술파이드의 용융개시온도 보다 적어도 15℃이상이고, 용융열흡수 피이크온도보다 적어도 2℃이하인 때에 압력하에서 인접시키는 것을 특징으로 하는 방법.The method according to claim 1, wherein the surface temperature of the cross section is adjacent to each other under pressure when the surface temperature of each of the cross sections is at least 15 ° C or more than the melting start temperature of the polyarylene sulfide and at least 2 ° C or less than the melting heat absorption peak temperature. 제2항에 있어서, 단면이 약 70 내지 1200kPa(0.7-12kg/cm²)의 압력에서 상호 인접되는 것을 특징으로 하는 방법.The method of claim 2, wherein the cross sections are adjacent to each other at a pressure of about 70 to 1200 kPa (0.7-12 kg / cm 2). 실질적으로 변색되지 않고, 만약 있다면 많아야 1mm 높이의 내부비이드를 가지고, 그리고 관형생산물 자체 인장강도의 적어도 50%의 인장강도를 가지는 용접점으로 상호 용접된 한쌍의 폴리아릴렌 술파이드의 관형생산물로 이루어진 것을 특징으로 하는 용접관형구조물.It is a tubular product of a pair of polyarylene sulfides that are substantially discolored and, if any, welded together with an internal bead of at most 1 mm height and welded to a tensile strength of at least 50% of the tubular product's own tensile strength. Welded tubular structure, characterized in that made.
KR1019920023915A 1991-12-11 1992-12-11 Method of welding tubular products of polyarylene sulfide and KR960000940B1 (en)

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JP91-350911 1991-12-11
JP35091191 1991-12-11
JP29913192A JP3300436B2 (en) 1991-12-11 1992-10-13 Method for joining tubular molded articles made of polyarylene sulfide
JP92-299131 1992-10-13

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KR960000940B1 true KR960000940B1 (en) 1996-01-15

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