CN106311798B - A kind of finish draw technique of steel pipe obform body - Google Patents
A kind of finish draw technique of steel pipe obform body Download PDFInfo
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- CN106311798B CN106311798B CN201610688458.XA CN201610688458A CN106311798B CN 106311798 B CN106311798 B CN 106311798B CN 201610688458 A CN201610688458 A CN 201610688458A CN 106311798 B CN106311798 B CN 106311798B
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- hollow
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 142
- 239000010959 steel Substances 0.000 title claims abstract description 142
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000012545 processing Methods 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000005554 pickling Methods 0.000 claims abstract description 25
- 238000005098 hot rolling Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007654 immersion Methods 0.000 claims description 9
- 238000009785 tube rolling Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 210000000078 claw Anatomy 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000007639 printing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of finish draw techniques of steel pipe obform body, include the following steps: the preparation of (1) raw material；(2) the perforation processing of pipe；(3) hot rolling treatment of hollow billet；(4) drawing process of hollow steel pipe；(5) pickling processes of steel pipe obform body；(6) tube reducing of determining of steel pipe obform body is handled；(7) finished product packing is handled.The configuration of the present invention is simple, it is practical, significantly improve the machining accuracy and working efficiency of steel pipe obform body, reduction in the numbers of seconds, save the cost expense, the finish draw simple process simultaneously, meets actual production requirement, improves comprehensive utilization ratio, and the technical process passes through strict control blank size, heating time and pickling time, pickling temperature, so that the processing of steel pipe obform body is more convenient, the trimmed size in later period is improved, improves the economic benefit of product.
Description
Technical field
The present invention relates to a kind of finish draw techniques of steel pipe obform body.
Background technique
19th century younger oil exploitation, during Two World Wars naval vessel, boiler, aircraft manufacture, second of the world
The manufacture of big postwar apparatus of thermo-electric power boiler, the development of chemical industry and the drilling of petroleum gas and transport etc., all effectively push
Development of the Steel Tube Industries in kind, yield and quality.Steel pipe be applied not only to trandfer fluid and powdery solid, exchange thermal energy,
Machine components and container are manufactured, it or a kind of economic steel.Building structure rack, pillar and machinery mount are manufactured with steel pipe,
Weight can be mitigated, save metal 20~40%, and can realize batch production mechanized construction.Highway bridge is manufactured not with steel pipe
But steel can be saved, simplify construction, and the area of stopping off, investment reduction and maintenance cost can be greatly reduced.
Steel pipe obform body is one of steel pipe type.Currently, the industries such as steel pipe obform body extensive medical and chemical industry, refrigeration
In, it is indispensable part in copper clad steel piping connection.With perfecting for countries in the world environmental protection law, the ground such as European Union are exported to
The heavy metal of component must control within the allowable range in the household appliances of area and country.Domestic steel pipe obform body is processed into
Type is continued to use always for a long time fills heavy metal extrusion, and the greatest drawback of the process is to guarantee that content of beary metal is up to standard
Cause the complex process of remaining lead in removing copper-clad steel pipe, period long, at high cost, there are the productions of very universal thus technique
Special-shaped copper-clad steel pipe remnants lead content over-standard phenomenon.In addition during clearing up remaining lead, ambient enviroment can be polluted,
And also directly affect the physical and mental health of operator.
Summary of the invention
Present invention aims at provide a kind of finish draw technique of steel pipe obform body for deficiency of the prior art
Technical solution, significantly improve the machining accuracy and working efficiency of steel pipe obform body, reduction in the numbers of seconds, save the cost expense, together
When the finish draw simple process, meet actual production requirement, improve comprehensive utilization ratio.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of finish draw technique of steel pipe obform body, it is characterised in that include the following steps:
1) preparation of raw material:
A, according to design drawing and processing technology requirement, and the length after steel pipe finish draw is considered to determine the lower measuring tape of steel pipe
It is very little, the blanking of pipe is carried out further according to determining size, and retaining wall on slope is carried out to the pipe after blanking with pipeline beveling machine；
B, the pipe good to blanking carries out the inspection of size, tolerance, end surface inclination, pipeline section burr, chamfering and length dimension
It looks into, it is ensured that it reaches actual processing request, convenient for the post-production and processing of pipe；
C, the flushing to examining qualified pipe to carry out surface, the impurity on its surface is rinsed well, avoids influencing the later period
Processing to pipe；
2) the perforation processing of pipe:
A, before pipe perforation, pipe is fixed on lathe, with drilling equipment to being drilled on the end face of pipe threaded end
Internal point, so that it is guaranteed that the perforation accuracy of pipe, prevents deviation occur when perforation；
B, the pipe after centering is heated with rotary heating furnace again, passes through the temperature control device in rotary heating furnace
The heating temperature of pipe is controlled, until the temperature of pipe reaches the requirement of perforation, then is perforated with pushing piercing machine to pipe
Processing, so that hollow billet has been made after perforation in pipe；
3) hot rolling treatment of hollow billet:
A, the head end of hollow billet is fixedly clamped by the clamping device on hot rolling machine worktable first, by adjusting claw
Shrinkage degree improves the fixation performance of hollow billet, and the tail end of hollow billet passes through so that claw is firmly fixedly connected with hollow billet
Bracket system lifts fixation, further increases stability；
B, after hollow billet fixes, heating device is opened, so that the coil wound on the heating rod in rolling pipe starts to generate heat,
Heat is transmitted to the surface of rolling pipe by the heat sink on heating rod again, so that rolling pipe is preheated, so that surface
Temperature reaches the temperature value of hot rolling；
C, when the surface temperature of rolling pipe rises to specified value, rolling pipe is moved to the head end of hollow billet, then is passed through
Telescopic device moves down rolling pipe, until telescopic device stops working when the surface of rolling pipe and hollow billet just contacts, driving
Device driven roller tube rolling is mobile from the head end of hollow billet toward end, ultimately generates hollow steel pipe；
4) drawing process of hollow steel pipe:
A, hollow steel pipe is heated to 100~300 DEG C using high-frequency induction heating apparatus；
B, drawing process is carried out to hollow steel pipe with drawbench again, keep the outer diameter processing capacity of hollow steel pipe 0~
6mm, internal diameter processing capacity is in 0.5~1mm, until steel pipe obform body required for hollow steel pipe is drawn into；
5) pickling processes of steel pipe obform body:
A, steel pipe obform body is immersed in pre- immersion trough by fixed frame, by the liquid in pre- immersion trough to steel pipe obform body
Carry out preliminary pickling processes；
B, fixed frame is moved in acid storage again, to steel pipe obform body carry out pickling processes, pickling Immersion time be 5~
12min, and acid liquor temperature is 50~60 DEG C；
C, washing and cleaning operation is carried out to steel pipe obform body with hot water after pickling, maintains water temperature at 85 DEG C or more, cleaned 3 times, then
It is dried up with high-pressure blast；
6) tube reducing of determining of steel pipe obform body is handled:
A, the steel pipe obform body after pickling processes is subjected to cooling treatment, steel pipe obform body is fully immersed in coolant liquid
Cooled down, cooling time be 12~for 24 hours；
B, after the completion of cooling, steel pipe obform body is carried out with size-reducing mill to determine tube reducing processing；
C, finally the rear and front end of steel pipe obform body is cut off, and straightening processing is carried out to steel pipe obform body；
7) finished product packing is handled:
Checked using size and curvature of the measuring device to steel pipe obform body, and to steel pipe obform body inside and outside
Surface is checked, it is ensured that the surfaces externally and internally of steel pipe obform body does not have cracked, scuffing, impression, complies with actual add
Work requirement, then the printing of model specification is carried out to standard compliant steel pipe obform body, and to the external coating of steel pipe obform body
One layer of paint, is packed and stored using final.
Further, in the step b of step 2), the heating temperature of rotary heating furnace is 600~750 DEG C.
Further, in the step a of step 3), then when being clamped fixed to hollow billet, first according to the actual processing of hollow billet
Length and requirement carry out the adjustment of bracket locations, so that the hollow billet of different processing dimensions can be fixed securely.
Further, steel pipe obform body needs to handle by expansion between step 6) and step 7), by reeler to steel
The wall thickness of pipe obform body carries out expansion, eliminates that wall unevenness caused by tube rolling is even, while but also steel pipe obform body interior appearance
Face is smooth, so that steel pipe obform body is more round just.
Further, in step 4), the drawing speed of drawbench is 5~30m/min.
Further, in step 3), when hollow steel pipe after processing is completed, clearing apparatus is opened, and air pump is by connecting tube
Spray boom provides gas source, and spray boom passes through spray head again and carries out cleaning work to workbench, while mobile device drives spray boom mobile, thus
So that the everywhere on workbench can be cleaned up.
Further, it in the b of step 6), needs to carry out steel pipe obform body electrochemical deoiling processing, rotation after determining tube reducing processing
Device drives the rotation of steel pipe obform body, and hot alkaline solution carries out oily waste degradation processing to steel pipe obform body by spraying device.
Finish draw simple process of the present invention, overall procedure automation degree is high, is convenient for actual operation and use.
The precision of the steel pipe obform body produced simultaneously by the finish draw technique is high, and quality of finished product good, defect rate is low, and energy loss is small.And
And the technical process passes through strict control blank size, heating time and pickling time, pickling temperature, so that steel pipe obform body
It is more convenient to process, and improves the trimmed size in later period, improves the economic benefit of product.
The configuration of the present invention is simple, it is practical, the machining accuracy and working efficiency of steel pipe obform body are significantly improved, is reduced secondary
Product rate, save the cost expense, while the finish draw simple process, meet actual production requirement, improve comprehensive utilization ratio.
Specific embodiment
A kind of finish draw technique of steel pipe obform body, includes the following steps:
1) preparation of raw material:
A, according to design drawing and processing technology requirement, and the length after steel pipe finish draw is considered to determine the lower measuring tape of steel pipe
It is very little, the blanking of pipe is carried out further according to determining size, and retaining wall on slope is carried out to the pipe after blanking with pipeline beveling machine；
B, the pipe good to blanking carries out the inspection of size, tolerance, end surface inclination, pipeline section burr, chamfering and length dimension
It looks into, it is ensured that it reaches actual processing request, convenient for the post-production and processing of pipe；
C, the flushing to examining qualified pipe to carry out surface, the impurity on its surface is rinsed well, avoids influencing the later period
Processing to pipe；
2) the perforation processing of pipe:
A, before pipe perforation, pipe is fixed on lathe, with drilling equipment to being drilled on the end face of pipe threaded end
Internal point, so that it is guaranteed that the perforation accuracy of pipe, prevents occurring deviation when perforation, reduce pipe wall unevenness, improve secondary
Bite condition；
B, the pipe after centering is heated with rotary heating furnace again, passes through the temperature control device in rotary heating furnace
The heating temperature of pipe is controlled, until the temperature of pipe reaches the requirement of perforation, then is perforated with pushing piercing machine to pipe
Processing, so that hollow billet has been made in pipe after perforation, the heating temperature of rotary heating furnace is 600~750 DEG C, and heat treatment can
To improve the plasticity of pipe, resistance of deformation is reduced, prepares good worked structure for tube rolling, is effectively improved the performance of metal, together
Shi Caiyong rotary heating furnace is adapted to the heating of the pipe of different-diameter and length, while rotary heating furnace can make pipe
Be heated evenly, heating time section, improve heating efficiency, the degree of automation is also high, be convenient for actual operation and use；
3) hot rolling treatment of hollow billet:
A, the head end of hollow billet is fixedly clamped by the clamping device on hot rolling machine worktable first, by adjusting claw
Shrinkage degree improves the fixation performance of hollow billet, and the tail end of hollow billet passes through so that claw is firmly fixedly connected with hollow billet
Bracket system lifts fixation, when further increasing stability, then being clamped fixed to hollow billet, first according to the reality of hollow billet
Processing length and requirement carry out the adjustment of bracket locations, so that the hollow billet of different processing dimensions can be fixed securely；
B, after hollow billet fixes, heating device is opened, so that the coil wound on the heating rod in rolling pipe starts to generate heat,
Heat is transmitted to the surface of rolling pipe by the heat sink on heating rod again, so that rolling pipe is preheated, so that surface
Temperature reaches the temperature value of hot rolling；
C, when the surface temperature of rolling pipe rises to specified value, rolling pipe is moved to the head end of hollow billet, then is passed through
Telescopic device moves down rolling pipe, until telescopic device stops working when the surface of rolling pipe and hollow billet just contacts, driving
Device driven roller tube rolling is mobile from the head end of hollow billet toward end, ultimately generates hollow steel pipe；
D, when hollow steel pipe after processing is completed, clearing apparatus is opened, and air pump provides gas source, spray boom by connecting tube for spray boom
Cleaning work is carried out to workbench by spray head again, while mobile device drives spray boom mobile, so that every on workbench
It can be cleaned up at one, it is automatic by the processing enhanced convenience that can be designed so that steel pipe obform body of clearing apparatus
Change, processing of the hot-rolling mill to following hollow billet of being also more convenient for, improve work quality and operating rate, reduction in the numbers of seconds reduces energy consumption
Loss；
4) drawing process of hollow steel pipe:
A, hollow steel pipe is heated to 100~300 DEG C using high-frequency induction heating apparatus；
B, drawing process is carried out to hollow steel pipe with drawbench again, keep the outer diameter processing capacity of hollow steel pipe 0~
6mm, internal diameter processing capacity is in 0.5~1mm, until steel pipe obform body required for hollow steel pipe is drawn into, drawbench
Drawing speed is 5~30m/min；
5) pickling processes of steel pipe obform body:
A, steel pipe obform body is immersed in pre- immersion trough by fixed frame, by the liquid in pre- immersion trough to steel pipe obform body
Carry out preliminary pickling processes；
B, fixed frame is moved in acid storage again, to steel pipe obform body carry out pickling processes, pickling Immersion time be 5~
12min, and acid liquor temperature is 50~60 DEG C, needs to carry out electrochemical deoiling processing, rotating device to steel pipe obform body after pickling processes
The rotation of steel pipe obform body is driven, hot alkaline solution carries out oily waste degradation processing to steel pipe obform body by spraying device；
C, washing and cleaning operation is carried out to steel pipe obform body with hot water after pickling, maintains water temperature at 85 DEG C or more, cleaned 3 times, then
It is dried up with high-pressure blast, the corrosion resistance and good of the steel pipe obform body after pickling processes extends the use of steel pipe obform body
Service life；
6) tube reducing of determining of steel pipe obform body is handled:
A, the steel pipe obform body after pickling processes is subjected to cooling treatment, steel pipe obform body is fully immersed in coolant liquid
Cooled down, cooling time be 12~for 24 hours；
B, after the completion of cooling, steel pipe obform body is carried out with size-reducing mill to determine tube reducing processing；
C, finally the rear and front end of steel pipe obform body is cut off, and straightening processing is carried out to steel pipe obform body；
7) the expansion processing of steel pipe obform body:
Expansion is carried out by wall thickness of the reeler to steel pipe obform body, wall unevenness caused by elimination tube rolling is even, while
So that the surfaces externally and internally of steel pipe obform body is smooth, so that steel pipe obform body is more round just；
8) finished product packing is handled:
Steel pipe obform body needs to handle by expansion, carries out expansion by wall thickness of the reeler to steel pipe obform body, eliminates
Wall unevenness caused by tube rolling is even, while but also the surfaces externally and internally of steel pipe obform body is smooth, so that steel pipe obform body is more round just
Checked using size and curvature of the measuring device to steel pipe obform body, and to steel pipe obform body inside and outside
Surface is checked, it is ensured that the surfaces externally and internally of steel pipe obform body does not have cracked, scuffing, impression, complies with actual add
Work requirement, then the printing of model specification is carried out to standard compliant steel pipe obform body, and to the external coating of steel pipe obform body
One layer of paint, is packed and stored using final.
The above is only specific embodiments of the present invention, but technical characteristic of the invention is not limited thereto.It is any with this hair
Based on bright, to realize essentially identical technical effect, made ground simple change, equivalent replacement or modification etc. are all covered
Among protection scope of the present invention.
Claims (7)
1. a kind of finish draw technique of steel pipe obform body, characterized by the following steps:
1) preparation of raw material:
A, according to design drawing and processing technology requirement, and consider the length after steel pipe finish draw to determine the drop-down size of steel pipe,
The blanking of pipe is carried out further according to determining size, and retaining wall on slope is carried out to the pipe after blanking with pipeline beveling machine；
B, the pipe good to blanking carries out the inspection of size, tolerance, end surface inclination, pipeline section burr, chamfering and length dimension, really
It protects it and reaches actual processing request, convenient for the post-production and processing of pipe；
C, the flushing to examining qualified pipe to carry out surface, the impurity on its surface is rinsed well, avoids influencing the later period to pipe
The processing of base；
2) the perforation processing of pipe:
A, before pipe perforation, pipe is fixed on lathe, with drilling equipment to being drilled with centering on the end face of pipe threaded end
Hole, so that it is guaranteed that the perforation accuracy of pipe, prevents deviation occur when perforation；
B, the pipe after centering is heated with rotary heating furnace again, is controlled by the temperature control device in rotary heating furnace
The heating temperature of pipe until the temperature of pipe reaches the requirement of perforation, then carries out perforation processing to pipe with pushing piercing machine,
So that hollow billet has been made after perforation in pipe；
3) hot rolling treatment of hollow billet:
A, the head end of hollow billet is fixedly clamped by the clamping device on hot rolling machine worktable first, by adjusting the contraction of claw
Degree improves the fixation performance of hollow billet, and the tail end of hollow billet passes through bracket so that claw is firmly fixedly connected with hollow billet
Device lifts fixation, further increases stability；
B, after hollow billet fixes, heating device is opened, so that the coil wound on the heating rod in rolling pipe starts to generate heat, heat
The surface of rolling pipe is transmitted to by the heat sink on heating rod again, to preheat to rolling pipe, so that the temperature on surface
Reach the temperature value of hot rolling；
C, when the surface temperature of rolling pipe rises to specified value, rolling pipe is moved to the head end of hollow billet, then by flexible
Device moves down rolling pipe, until telescopic device stops working when the surface of rolling pipe and hollow billet contacts, driving device is driven
Dynamic rolling pipe is mobile from the head end of hollow billet toward end, ultimately generates hollow steel pipe；
4) drawing process of hollow steel pipe:
A, hollow steel pipe is heated to 100~300 DEG C using high-frequency induction heating apparatus；
B, drawing process is carried out to hollow steel pipe with drawbench again, keeps the outer diameter processing capacity of hollow steel pipe in 0~6mm,
Internal diameter processing capacity is in 0.5~1mm, until steel pipe obform body required for hollow steel pipe is drawn into；
5) pickling processes of steel pipe obform body:
A, steel pipe obform body is immersed in pre- immersion trough by fixed frame, steel pipe obform body is carried out by the liquid in pre- immersion trough
Preliminary pickling processes；
B, fixed frame is moved in acid storage again, to steel pipe obform body carry out pickling processes, pickling Immersion time be 5~
12min, and acid liquor temperature is 50~60 DEG C；
C, washing and cleaning operation is carried out to steel pipe obform body with hot water after pickling, maintains water temperature at 85 DEG C or more, cleaned 3 times, then with high
Press wind dry；
6) tube reducing of determining of steel pipe obform body is handled:
A, the steel pipe obform body after pickling processes is subjected to cooling treatment, steel pipe obform body is fully immersed in coolant liquid and is carried out
It is cooling, cooling time is 12~for 24 hours；
B, after the completion of cooling, steel pipe obform body is carried out with size-reducing mill to determine tube reducing processing；
C, finally the rear and front end of steel pipe obform body is cut off, and straightening processing is carried out to steel pipe obform body；
7) finished product packing is handled:
It is checked using size and curvature of the measuring device to steel pipe obform body, and to the surfaces externally and internally of steel pipe obform body
It is checked, it is ensured that the surfaces externally and internally of steel pipe obform body does not have cracked, scuffing, impression, complies with actual processing and wants
It asks, then carries out the printing of model specification to standard compliant steel pipe obform body, and to one layer of the external coating of steel pipe obform body
Paint, is packed and stored using final.
2. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step of the step 2)
In rapid b, the heating temperature of rotary heating furnace is 600~750 DEG C.
3. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step of the step 3)
In rapid a, when being clamped fixed to hollow billet, first according to the actual processing length of hollow billet and requirement, bracket locations are carried out
Adjustment, so that the hollow billet of different processing dimensions can be fixed securely.
4. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step 6) and institute
It states steel pipe obform body between step 7) to need to handle by expansion, expansion is carried out by wall thickness of the reeler to steel pipe obform body,
It is even to eliminate wall unevenness caused by tube rolling, while but also the surfaces externally and internally of steel pipe obform body is smooth, so that steel pipe obform body is more
Circle is just.
5. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step 4),
The drawing speed of the drawbench is 5~30m/min.
6. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step 3),
When hollow steel pipe after processing is completed, clearing apparatus is opened, and air pump provides gas source by connecting tube for spray boom, and spray boom passes through spray head again
Cleaning work is carried out to workbench, while mobile device drives spray boom mobile, so that the everywhere on workbench is ok
It is cleaned up.
7. a kind of finish draw technique of steel pipe obform body according to claim 1, it is characterised in that: in the step of the step 6)
In rapid b, needing to carry out steel pipe obform body electrochemical deoiling processing after determining tube reducing processing, rotating device drives the rotation of steel pipe obform body,
Hot alkaline solution carries out oily waste degradation processing to steel pipe obform body by spraying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688458.XA CN106311798B (en) | 2016-08-18 | 2016-08-18 | A kind of finish draw technique of steel pipe obform body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688458.XA CN106311798B (en) | 2016-08-18 | 2016-08-18 | A kind of finish draw technique of steel pipe obform body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106311798A CN106311798A (en) | 2017-01-11 |
| CN106311798B true CN106311798B (en) | 2019-01-08 |
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ID=57743184
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610688458.XA Active CN106311798B (en) | 2016-08-18 | 2016-08-18 | A kind of finish draw technique of steel pipe obform body |
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Denomination of invention: A fine drawing process for special-shaped steel pipe Effective date of registration: 20211227 Granted publication date: 20190108 Pledgee: Xinchang Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: Zhejiang Rijia Copper Technology Co.,Ltd. Registration number: Y2021330002630 |
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Date of cancellation: 20230831 Granted publication date: 20190108 Pledgee: Xinchang Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: Zhejiang Rijia Copper Technology Co.,Ltd. Registration number: Y2021330002630 |
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Denomination of invention: A Fine Drawing Process for Steel Pipe Shapes Effective date of registration: 20230911 Granted publication date: 20190108 Pledgee: Bank of China Limited by Share Ltd. Xinchang branch Pledgor: Zhejiang Rijia Copper Technology Co.,Ltd. Registration number: Y2023330002009 |