EP0033040B1 - Improvements in and relating to the wiping of treated wire or strip - Google Patents

Improvements in and relating to the wiping of treated wire or strip Download PDF

Info

Publication number
EP0033040B1
EP0033040B1 EP80304782A EP80304782A EP0033040B1 EP 0033040 B1 EP0033040 B1 EP 0033040B1 EP 80304782 A EP80304782 A EP 80304782A EP 80304782 A EP80304782 A EP 80304782A EP 0033040 B1 EP0033040 B1 EP 0033040B1
Authority
EP
European Patent Office
Prior art keywords
wiping
pad
strip
wire
alumino silicate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80304782A
Other languages
German (de)
French (fr)
Other versions
EP0033040A1 (en
Inventor
Colin Dudley Peel
Colin Gin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Zealand Wire Industries Ltd
Original Assignee
New Zealand Wire Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NZ19267080A external-priority patent/NZ192670A/en
Application filed by New Zealand Wire Industries Ltd filed Critical New Zealand Wire Industries Ltd
Publication of EP0033040A1 publication Critical patent/EP0033040A1/en
Application granted granted Critical
Publication of EP0033040B1 publication Critical patent/EP0033040B1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/22—Removing excess of molten coatings; Controlling or regulating the coating thickness by rubbing, e.g. using knives, e.g. rubbing solids

Definitions

  • This invention relates to the wiping of a metal coating applied to wire or strip.
  • the invention has particular although not exclusive application to the wiping of coated wire or strip, as it emerges from a bath of molten metal, such as for example zinc or some other suitable metal coating material.
  • the asbestos string is wound around the wire and the wire passed through a slot between a pair of fingers, so that the string is wedged into the slot, this wiping the surface of the wire or strip.
  • pads these have generally been formed by hand, by winding asbestos card into a pad or disc, the pad or disc then being placed in an suitable pad holder.
  • European patent specification No. 0,009,940 discloses a method of making a material in the form of refractory fibrous material, including alumino silicate fibrous materials.
  • a method of wiping coated wire or strip, emerging from a bath of molten metal, using a pad including compressed alumino silicate fibres is provided.
  • a method of forming a pad for the wiping of coated wire or strip as it emerges from a bath of molten metal including the steps of:
  • compressed, non-combustible material consisting essentially of alumino silicate fibrous material
  • a suitable coating such as zinc or some other metal coating
  • the compression of the material including the alumino silicate fibrous material is carried out by a press which consists of a piston moving within a tubular member or housing of a cross section corresponding substantially to that of the resulting pad.
  • the pressure applied to the material will vary depending upon the size of the material and also upon the size of the wire to be wiped.
  • the pads are preferably softer (that is to say compressed at a lower pressure), than would be the case for pads suitable for small diameter wires.
  • the pad is thus formed of a non-combustible material, consisting essentially of an alumino silicate fibrous material.
  • the alumino silicate fibrous material is fed to a compression station or means, and then compressed by applied pressure into a pad or disc. If desired a suitable lubricant, such as powdered graphite can be added to the alumino silicate fibrous material.
  • the present method provides for the use of such a compressed pad consisting essentially of alumino silicate fibrous material in the wiping of coated wire or strip, such as it emerges from a bath of molten metal.
  • a compressed pad consisting essentially of alumino silicate fibrous material
  • the method of wiping coated wire or strip according to the present invention has a number of advantages. By way of example, the advantages are:
  • alumino silicate fibre material the material is compressed into a pad or disc by an applied pressure in the range of about 7 to 20 tonnes per square inch (1x10 8 to 3x10 8 Nm- 2 ). This is however by way of example only.
  • a lubricant such as for example powdered graphite. This is advantageous for example at the beginning of a wiping operation, when the wire or strip begins to pass through or past the pad.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Description

  • This invention relates to the wiping of a metal coating applied to wire or strip.
  • The invention has particular although not exclusive application to the wiping of coated wire or strip, as it emerges from a bath of molten metal, such as for example zinc or some other suitable metal coating material.
  • Up until this time, in the galvanising of wire or coating of wire, the wire or strip has been taken from the bath at a relatively shallow angle to the horizontal and wiped with an asbestos pad or asbestos string.
  • In the case of asbestos string for example, the asbestos string is wound around the wire and the wire passed through a slot between a pair of fingers, so that the string is wedged into the slot, this wiping the surface of the wire or strip. In the case of pads, these have generally been formed by hand, by winding asbestos card into a pad or disc, the pad or disc then being placed in an suitable pad holder.
  • European patent specification No. 0,009,940 discloses a method of making a material in the form of refractory fibrous material, including alumino silicate fibrous materials.
  • It is an object of this invention to go someway towards providing a method for the wiping of coated wire or strip as it emerges from a bath of molten metal and to provide a method for forming a material for use in such wiping of coated wire or strip.
  • It is a further object of the invention to provide the public and manufacturers with a useful choice.
  • Other objects of this invention will become apparent from the following description.
  • According to one aspect of this invention there is provided a method of wiping coated wire or strip, emerging from a bath of molten metal, using a pad including compressed alumino silicate fibres.
  • According to a further aspect of this invention, there is provided a method of forming a pad for the wiping of coated wire or strip as it emerges from a bath of molten metal, including the steps of:
    • (a) feeding an amount of material including fibrous alumino silicate, and
    • (b) compressing said material under pressure to form an integral pad.
  • The invention will now be described by way of example only, and it should be appreciated that modifications or improvements may be made to the invention without departing from the scope thereof, as defined by the appended claims.
  • It has been found in experimentation, that compressed, non-combustible material, consisting essentially of alumino silicate fibrous material, has particular advantages in the wiping of wire or strip, which has been coated with a suitable coating, such as zinc or some other metal coating, as it emerges from a bath of molten metal, such as during the processing of wire or strip.
  • In one form of the invention, the compression of the material including the alumino silicate fibrous material is carried out by a press which consists of a piston moving within a tubular member or housing of a cross section corresponding substantially to that of the resulting pad.
  • The pressure applied to the material will vary depending upon the size of the material and also upon the size of the wire to be wiped.
  • The compression and thus compacting of the material causes a resultant pad or disc to remain as an integral unit during wiping of coated wire or strip.
  • For large diameter wires, the pads are preferably softer (that is to say compressed at a lower pressure), than would be the case for pads suitable for small diameter wires.
  • The pad is thus formed of a non-combustible material, consisting essentially of an alumino silicate fibrous material.
  • The alumino silicate fibrous material is fed to a compression station or means, and then compressed by applied pressure into a pad or disc. If desired a suitable lubricant, such as powdered graphite can be added to the alumino silicate fibrous material.
  • The present method provides for the use of such a compressed pad consisting essentially of alumino silicate fibrous material in the wiping of coated wire or strip, such as it emerges from a bath of molten metal. For example, as in the galvanising of wire or strip. The method of wiping coated wire or strip according to the present invention has a number of advantages. By way of example, the advantages are:
    • 1. The use of alumino silicate fibrous material removes or at least reduces substantially health hazards which are present by using asbestos material such as used up until this time.
    • 2. It has been found during experimentation that use of alumino silicate fibrous material, as a pad wiping material, enables the pad wiping material to withstand temperatures generally higher than asbestos or other material. For example, it has been found that alumino silicate fibrous material can generally withstand high temperatures (such as found during wiping operations) of up to approximately 1300°C.
    • 3. The use of alumino silicate fibrous material as a pad wiping material has generally been found to give a longer and higher pad life than other pad wiping materials (such as asbestos).
    • 4. By using alumino silicate fibrous material as a pad wiping material, it has been found that a more even wipe is obtained over the wire or strip, than is generally obtained by using other materials (such as asbestos).
    • 5. The use of alumino silicate fibrous material results in a tighter wipe about the wire or strip, and generally speaking results in a low coating thickness as compared with other materials.
  • Preferably, in use alumino silicate fibre material, the material is compressed into a pad or disc by an applied pressure in the range of about 7 to 20 tonnes per square inch (1x108 to 3x108 Nm-2). This is however by way of example only.
  • It will be appreciated that the compacting of the alumino silicate fibrous material causes the pad to remain as an integral unit during wiping.
  • In use, it has been found to be advantageous to add a lubricant, such as for example powdered graphite. This is advantageous for example at the beginning of a wiping operation, when the wire or strip begins to pass through or past the pad.

Claims (5)

1. A method of wiping coated wire or strip, emerging from a bath of molten metal, using a pad including compressed alumino silicate fibres.
2. A method as claimed in claim 1, wherein said pad further includes a lubricant.
3. A method as claimed in claim 2, wherein the lubricant is powdered graphite.
4. A method of forming a pad for the wiping of coated wire or strip as it emerges from a bath of molten metal, characterised in that said method includes the steps of:
(a) feeding an amount of material including alumino silicate fibrous material, and
(b) compressing said material under pressure to form an integral pad.
5. A method as claimed in claim 4, wherein said pressure is in the range of 7 to 20 tonnes per square inch (1x108 to 3x108 Nm-2).
EP80304782A 1980-01-22 1980-12-31 Improvements in and relating to the wiping of treated wire or strip Expired EP0033040B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NZ192670 1980-01-22
NZ19267080A NZ192670A (en) 1980-01-22 1980-01-22 Method of wiping coated wire using compressed alumino silicate fibrous material pad
NZ194893 1980-09-09
NZ19489380A NZ194893A (en) 1980-01-22 1980-09-09 Method of wiping coated wire using compressed alumino silicate fibrous material pad

Publications (2)

Publication Number Publication Date
EP0033040A1 EP0033040A1 (en) 1981-08-05
EP0033040B1 true EP0033040B1 (en) 1985-05-22

Family

ID=26650344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80304782A Expired EP0033040B1 (en) 1980-01-22 1980-12-31 Improvements in and relating to the wiping of treated wire or strip

Country Status (5)

Country Link
EP (1) EP0033040B1 (en)
AU (1) AU526034B2 (en)
CA (1) CA1145513A (en)
DE (1) DE3070686D1 (en)
NZ (1) NZ194893A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8602151A1 (en) * 1984-02-23 1985-11-01 Australian Wire Ind Pty Coating of wire or strip
DE4134070A1 (en) * 1991-02-18 1992-08-20 Boockmann Gmbh METHOD AND DEVICE FOR SLIDING A WIRE
JPH07109556A (en) * 1993-10-08 1995-04-25 Shinko Kosen Kogyo Kk Alloy layer coated steel wire and its production
US20060219816A1 (en) 2005-04-05 2006-10-05 Durr Systems Rotary atomizer component

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD103929A1 (en) * 1973-04-18 1974-02-12
EP0009940A1 (en) * 1978-10-03 1980-04-16 Isolite Babcock Refractories Company Limited Method of making refractory fibrous material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT205310B (en) * 1956-11-22 1959-09-25 Stahl & Walzwerke Rasselstein Method and device for coating steel or metal strip with other metals or metal alloys in a hot-melt manner
DE1248418B (en) * 1961-03-03 1967-08-24 Vitkovice Zelezarny Device for stripping off the excess molten metal from working rolls arranged in an oil bath in devices for the production of metallic coatings on steel sheets and strips in the hot-dip process
DE2305963A1 (en) * 1973-02-07 1974-09-19 Siemens Ag Stripping plate for hot-tinning of copper wire - for thin uniform coatings

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD103929A1 (en) * 1973-04-18 1974-02-12
EP0009940A1 (en) * 1978-10-03 1980-04-16 Isolite Babcock Refractories Company Limited Method of making refractory fibrous material

Also Published As

Publication number Publication date
AU526034B2 (en) 1982-12-16
CA1145513A (en) 1983-05-03
AU6283480A (en) 1981-07-30
DE3070686D1 (en) 1985-06-27
EP0033040A1 (en) 1981-08-05
NZ194893A (en) 1984-12-14

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