GB1423826A - Treatment of elongated metal articles - Google Patents

Treatment of elongated metal articles

Info

Publication number
GB1423826A
GB1423826A GB1390072A GB1390072A GB1423826A GB 1423826 A GB1423826 A GB 1423826A GB 1390072 A GB1390072 A GB 1390072A GB 1390072 A GB1390072 A GB 1390072A GB 1423826 A GB1423826 A GB 1423826A
Authority
GB
United Kingdom
Prior art keywords
wire
zone
chamber
abrasive
article
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
GB1390072A
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.)
Abrasive Developments Ltd
Original Assignee
Abrasive Developments 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
Application filed by Abrasive Developments Ltd filed Critical Abrasive Developments Ltd
Priority to GB1390072A priority Critical patent/GB1423826A/en
Publication of GB1423826A publication Critical patent/GB1423826A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/78—Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Extraction Processes (AREA)

Abstract

1423826 Treating elongated metal articles; drawing; blasting ABRASIVE DEVELOPMENTS Ltd 6 June 1973 [24 March 1972] 13900/72 Headings B3A B3D and B3P A method of treating elongated metal articles, e.g. metal rod, wire, bar, strip, sections, profiles and extrusions, comprises passing the article through a first treatment zone in which an abrasive entrained in fluid impinges on the article by continuously evacuating the fluid from the zone, and then immediately passing the article through a second zone in which it is treated to provide it with a conversion coating. The conversion coating is formed by the transformation of the outer atomic layers of the metal surface into a chemical compound having properties different from those of the original metal surface, by means of a reaction induced with an artificial environment in the second zone and wherein the metal itself forms one constituent of the compound with the other constituent(s) being supplied from the environment. In the manufacture of bolts or nuts, wire is cleaned with wet or dry abrasive in a chamber in the first zone. The preferred chamber is tubular and is provided with nozzles arranged in one or two helices in the chamber wall. Primary air is drawn through the nozzles and abrasive is entrained in this air. A restricted amount of secondary air enters between the wire and guides at either end of the chamber, while come tertiary air is mixed with the primary air and abrasive just before the mixture enters the chamber. The wire then enters a chamber in the second zone containing a heated phosphate solution which is sprayed on the wire by a number of nozzles. The solution may be atomized and accelerated by compressed air, if desired. The wire next passes through a heated tunnel to dry the solution and then it is coated with drawing lubricant, which is helped to adhere to the wire surface by the phosphate coating. The wire is drawn to its final diameter and it is then subjected to cold forming to make nuts or bolts in conventional manner. The conversion coating may also be formed by passing the elongated metal article through a tank or bath containing the coating-forming material.
GB1390072A 1972-03-24 1972-03-24 Treatment of elongated metal articles Expired GB1423826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1390072A GB1423826A (en) 1972-03-24 1972-03-24 Treatment of elongated metal articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1390072A GB1423826A (en) 1972-03-24 1972-03-24 Treatment of elongated metal articles

Publications (1)

Publication Number Publication Date
GB1423826A true GB1423826A (en) 1976-02-04

Family

ID=10031413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1390072A Expired GB1423826A (en) 1972-03-24 1972-03-24 Treatment of elongated metal articles

Country Status (1)

Country Link
GB (1) GB1423826A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124121A (en) * 1982-06-18 1984-02-15 Sumitomo Metal Ind Dry type continuous wire drawing process and machine
US4553416A (en) * 1983-06-20 1985-11-19 Sumitomo Metal Industries, Ltd. Dry type continuous wire drawing process
US5709587A (en) * 1996-03-25 1998-01-20 Kennametal Inc. Method and apparatus for honing an elongate rotary tool
CN111020546A (en) * 2019-12-20 2020-04-17 承德相一机械有限公司 Phosphating process and phosphating production line for metal threaded rod piece

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124121A (en) * 1982-06-18 1984-02-15 Sumitomo Metal Ind Dry type continuous wire drawing process and machine
US4553416A (en) * 1983-06-20 1985-11-19 Sumitomo Metal Industries, Ltd. Dry type continuous wire drawing process
US5709587A (en) * 1996-03-25 1998-01-20 Kennametal Inc. Method and apparatus for honing an elongate rotary tool
US5762538A (en) * 1996-03-25 1998-06-09 Kennametal Inc. Method and apparatus for honing an elongate rotary tool
CN111020546A (en) * 2019-12-20 2020-04-17 承德相一机械有限公司 Phosphating process and phosphating production line for metal threaded rod piece

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee