GB897020A - Improvements relating to the working of metals - Google Patents
Improvements relating to the working of metalsInfo
- Publication number
- GB897020A GB897020A GB381/61A GB38161A GB897020A GB 897020 A GB897020 A GB 897020A GB 381/61 A GB381/61 A GB 381/61A GB 38161 A GB38161 A GB 38161A GB 897020 A GB897020 A GB 897020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphate
- coating
- solution
- accelerator
- acid solution
- 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
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
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/10—Orthophosphates containing oxidants
-
- 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
- B21C9/00—Cooling, heating or lubricating drawing material
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)
- Chemical Treatment Of Metals (AREA)
Abstract
897,020. Drawing. PYRENE CO. Ltd. Jan. 4, 1961 [March 10, 1960], No. 381/61. Class 83 (4). A method of cold working iron or steel comprises forming a phosphate coating on the surface by treatment with an acid solution of a non-coating phosphate and subjecting the coated article to plastic deformation such that the coating is wholly removed. For convenience, alkali metal phosphates are used and the concentration of phosphate in the acid solution, calculated as mono-sodium phosphate is preferably between 1 and 20 g/l. and the pH of the solution is preferably between 3 and 6. The solution should preferably contain an oxidizing agent as an accelerator, e.g. chlorates, bromates, nitrates, nitrites, per-compounds and/or nitrocompounds. The ratio by weight of the phosphate to the accelerator should be greater than 1 : 10 and not greater than 1 : 0.5. The solution should preferably be used at a temperature between 30‹ and 70‹ C. and may be applied by immersion or spraying. Two examples give details of treatment times and the thickness of coating obtained on steel tubes prior to drawing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE897020X | 1960-03-10 | ||
DEM44620A DE1228121B (en) | 1960-03-10 | 1960-03-10 | Process for facilitating the cold working of iron from steel |
FR851344A FR1279796A (en) | 1960-03-10 | 1961-02-01 | Process for treating iron and steel for cold forming |
Publications (1)
Publication Number | Publication Date |
---|---|
GB897020A true GB897020A (en) | 1962-05-23 |
Family
ID=61167775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB381/61A Expired GB897020A (en) | 1960-03-10 | 1961-01-04 | Improvements relating to the working of metals |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE599840A (en) |
CH (1) | CH396567A (en) |
DE (1) | DE1228121B (en) |
FR (1) | FR1279796A (en) |
GB (1) | GB897020A (en) |
SE (1) | SE302714B (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609308A (en) * | 1947-11-22 | 1952-09-02 | Parker Rust Proof Co | Method and material for producing coatings on metal |
GB714321A (en) * | 1948-07-23 | 1954-08-25 | Pyrene Co Ltd | Improvements in or relating to the coating of ferrous surfaces |
-
1960
- 1960-03-10 DE DEM44620A patent/DE1228121B/en active Pending
-
1961
- 1961-01-04 GB GB381/61A patent/GB897020A/en not_active Expired
- 1961-01-31 CH CH114061A patent/CH396567A/en unknown
- 1961-02-01 FR FR851344A patent/FR1279796A/en not_active Expired
- 1961-02-03 BE BE599840A patent/BE599840A/en unknown
- 1961-03-09 SE SE2513/61A patent/SE302714B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
FR1279796A (en) | 1961-12-22 |
SE302714B (en) | 1968-07-29 |
CH396567A (en) | 1965-07-31 |
DE1228121B (en) | 1966-11-03 |
BE599840A (en) | 1961-05-29 |
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