GB783227A - Improvements in or relating to the production of coatings on stainless steel - Google Patents
Improvements in or relating to the production of coatings on stainless steelInfo
- Publication number
- GB783227A GB783227A GB28669/55A GB2866955A GB783227A GB 783227 A GB783227 A GB 783227A GB 28669/55 A GB28669/55 A GB 28669/55A GB 2866955 A GB2866955 A GB 2866955A GB 783227 A GB783227 A GB 783227A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphur
- bath
- stainless steel
- 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
- C23C22/46—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 oxalates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
- B29D30/54—Retreading
- B29D2030/541—Abrading the tyre, e.g. buffing, to remove tread and/or sidewalls rubber, to prepare it for retreading
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Chemically Coating (AREA)
- Lubricants (AREA)
Abstract
A dilute mineral acid coating bath, suitable for application to stainless steel, comprises a mineral acid other than a halogen acid, manganese oxalate and a sulphur-bearing compound which contains oxygen and which will yield sulphur dioxide and sulphur upon decomposition in acid solution, the quantity of manganese oxalate being 1-18 grams litre, the quantity of the sulphur compound being such that a 10 ml. sample of the bath will react with at least 4 ml. of 0.05 normal iodine solution, using starch indicator, to a blue endpoint, and the amount of free acidity being such as to yield a pH of 0.7-2. The mineral acid is preferably sulphuric, sulphonic, sulphurous, nitric or phosphoric acid, the manganese oxalate may be introduced into the bath as such or may be formed in the bath by addition of manganese phosphate, sulphate, nitrate, carbonate or oxide together with oxalic acid, and the sulphur compound may be a thiosulphate, sulphite, hydrosulphide, thionate, or preferably, a meta-bisulphate. The surface of the stainless steel is depassivated, before coating, by treatment with an activating acid pickling solution containing nitric, hydrofluoric, hydrochloric and/or sulphuric acid; three specific examples are given of this solution. Six examples are given of the coating procedure, and it is stated that the coatings produced facilitate the drawing of stainless steel. Specifications 741,128 and 748,383 are referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US339793XA | 1954-12-02 | 1954-12-02 | |
| US160555XA | 1955-05-16 | 1955-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB783227A true GB783227A (en) | 1957-09-18 |
Family
ID=26688114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28669/55A Expired GB783227A (en) | 1954-12-02 | 1955-10-07 | Improvements in or relating to the production of coatings on stainless steel |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE536560A (en) |
| CH (1) | CH339793A (en) |
| DE (1) | DE1046979B (en) |
| FR (1) | FR1127905A (en) |
| GB (1) | GB783227A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2953487A (en) * | 1959-03-12 | 1960-09-20 | Amchem Prod | Method, bath and composition for coating corrosion resistant alloys |
| CN112501668B (en) * | 2020-08-04 | 2024-04-05 | 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所) | Stainless steel surface treatment method with high adhesion to coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE523763A (en) * | 1952-10-30 |
-
0
- BE BE536560D patent/BE536560A/xx unknown
-
1955
- 1955-02-25 DE DEA22148A patent/DE1046979B/en active Pending
- 1955-03-11 FR FR1127905D patent/FR1127905A/en not_active Expired
- 1955-08-25 CH CH339793D patent/CH339793A/en unknown
- 1955-10-07 GB GB28669/55A patent/GB783227A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE536560A (en) | |
| CH339793A (en) | 1959-07-15 |
| FR1127905A (en) | 1956-12-27 |
| DE1046979B (en) | 1958-12-18 |
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