US1428087A - Rust-resisting steel and method of producing same - Google Patents
Rust-resisting steel and method of producing same Download PDFInfo
- Publication number
- US1428087A US1428087A US479683A US47968321A US1428087A US 1428087 A US1428087 A US 1428087A US 479683 A US479683 A US 479683A US 47968321 A US47968321 A US 47968321A US 1428087 A US1428087 A US 1428087A
- Authority
- US
- United States
- Prior art keywords
- steel
- rust
- metal
- resisting steel
- producing same
- 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 - Lifetime
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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
Definitions
- rats n. enevrmn or mains rnnn, rnnnsv nvanra.
- This invention relates to iron and steel and it is particularly directed to rust resisting steel.
- the object of the invention is to provide rolled steel that rusts with dilliculty or is not so liable to rust as ordinary rolled steel found on the market at the present time.
- the steel billet is heated to a high temperature and rolled to the desired shape.
- a metallic or bri ht finish is required, the hot rolled steel is pickled with an acid to remove the oxide and then rolled or drawn cold to secure the high finish.
- the term rolling will be used to include drawing.
- Ha thin plate or strip is required, it may be processed several times. is annealed during which great care is exer cised to prevent the air from contacting with 'the metal while it is heated, as otherwise it would be oxidized and would have to be again pickled to remove the oxide or scale.
- the metal may be first hot rolled and then freed of its oxidized surface by any of the well known methods, such as etching and sand-blasting or sudden chilling and it may he washed. It is then given a coating of iron phosphate. This may be done by boiling the metal in a dilute solution of hosphoric acid (one pound of absolute acid to 100 pounds of water) or the metal may be simply dipped in a solution of phosphoric acid and Water (one pound of acid to 20 pounds of water). The water may be hot or cold.
- hosphoric acid one pound of absolute acid to 100 pounds of water
- Water one pound of acid to 20 pounds of water
- Another method of forming the phosphate coating on the surface is to apply a coating of a thermally decomposable phosphate such as ammonium or aniline phosphate and to then heat the metal to liberate phosphoric acid which attacks the surface forming the phosphate coating.
- Ur an acid salt of phosphoric acid may be applied to the surface which will have sufficient acid reaction to produce the desired coating.
- the metal is then rolled. It may be allowed to thoroughly dry first if the Wet methods mentioned above have been used or the metal may be passed through the rolls in the wet condition.
- the metal resulting from this process is dull in appearance and has the advantageous property of not readily rusting and it may he painted without danger of the metal rusting under the paint as the cause for this is neutralized in my process by the action of the free or combined phosphoric acid.
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- 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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
rats n. enevrmn or mains rnnn, rnnnsv nvanra.
No Drawing.
To aZZ whom it may concern:
Be it known that 1, Jules H. GRAVELL a citizen of the United States, residing at llllkills Park, in the county of Montgomery and State of Pennsylvania, have invented a new and useful lm rovement in Rust-Resisting Steel and Methods of Producing Same, of which the following is a specification.
This invention relates to iron and steel and it is particularly directed to rust resisting steel.
The object of the invention is to provide rolled steel that rusts with dilliculty or is not so liable to rust as ordinary rolled steel found on the market at the present time.
According to the present methods of making rolled steel and iron, the steel billet is heated to a high temperature and rolled to the desired shape. This produces the hot rolled steel of commerce which is covered with a substantial coating of oxide which causes it to look black. lit a metallic or bri ht finish is required, the hot rolled steel is pickled with an acid to remove the oxide and then rolled or drawn cold to secure the high finish. The term rolling will be used to include drawing. Ha thin plate or strip is required, it may be processed several times. is annealed during which great care is exer cised to prevent the air from contacting with 'the metal while it is heated, as otherwise it would be oxidized and would have to be again pickled to remove the oxide or scale.
Steel produced by these methods rusts rapidly while stored or being shipped. lit is natural for the metal to rust in the atmosphere, but the natural rusting is accelerated by the presence of impurities received in the pickling operation, such for instance as sulphurlc and other acids and salts.
l have discovered that it a thin coating of iron phosphate is given to the metal hetore rolling and that if this coating is rolled onto or into the surface in the rolling eration, the rust accelerators are neutra ized and the natural rusting tendencies of the metal are greatly reduced. Metals treated according to my process are distinguished from other metals by a darker looking surface and by their freedom from rusting, and they may be shipped or stored for long periods without danger of rusting although Between the cold rollings the metal RTUhT-SISTING STEEL AND HETEQD @151 PRODUGING SAME.
Application filed June 22, near. serial Ito. Matti not protected by a coating of oil which is now the universal custom.
To process the metal according to my invention, it may be first hot rolled and then freed of its oxidized surface by any of the well known methods, such as etching and sand-blasting or sudden chilling and it may he washed. It is then given a coating of iron phosphate. This may be done by boiling the metal in a dilute solution of hosphoric acid (one pound of absolute acid to 100 pounds of water) or the metal may be simply dipped in a solution of phosphoric acid and Water (one pound of acid to 20 pounds of water). The water may be hot or cold. Another method of forming the phosphate coating on the surface is to apply a coating of a thermally decomposable phosphate such as ammonium or aniline phosphate and to then heat the metal to liberate phosphoric acid which attacks the surface forming the phosphate coating. Ur an acid salt of phosphoric acid may be applied to the surface which will have sufficient acid reaction to produce the desired coating.
Alter securing the phosphated surface, the metal is then rolled. It may be allowed to thoroughly dry first if the Wet methods mentioned above have been used or the metal may be passed through the rolls in the wet condition.
The metal resulting from this process is dull in appearance and has the advantageous property of not readily rusting and it may he painted without danger of the metal rusting under the paint as the cause for this is neutralized in my process by the action of the free or combined phosphoric acid.
It will be obvious art that modifications may be made in details of procedure and in its chemical aspects the range of equivalents is wide, hence I do not intend to limit the invention as to such matters or otherwise than as the prior art and the appendedclaims may require.
I claim:
1. The method of producing rust resisting steel consisting in treating the steel with phos horic acid and 't on rolling the steel.
2. The method of producing rust resisting steel-consistingin pickling the steel, then treatin the steel with phosphoric acid, and then ro ling the steel.
3. The method of producing rust resistto those skilled in the ing steel consisting in. pickling the steel, washing the steel to remove the pickle then treating the steel with phosphoric acio, and then rolling the steel.
4:. The method of producing rust resist ing steel consisting in forming a coating of iron phosphate on the surface of the steel and then rolling the steel.
5. The method of treating steel to prevent 10 it from rusting Which consists in rolling into teases?
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US479683A US1428087A (en) | 1921-06-22 | 1921-06-22 | Rust-resisting steel and method of producing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US479683A US1428087A (en) | 1921-06-22 | 1921-06-22 | Rust-resisting steel and method of producing same |
Publications (1)
Publication Number | Publication Date |
---|---|
US1428087A true US1428087A (en) | 1922-09-05 |
Family
ID=23904979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US479683A Expired - Lifetime US1428087A (en) | 1921-06-22 | 1921-06-22 | Rust-resisting steel and method of producing same |
Country Status (1)
Country | Link |
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US (1) | US1428087A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2522176A (en) * | 1947-10-14 | 1950-09-12 | Parker Rust Proof Co | Drawing ferrous wire and other metal-working processes |
US2769737A (en) * | 1952-03-26 | 1956-11-06 | Parker Rust Proof Co | Amine phosphate coating solutions and method of coating |
US2835618A (en) * | 1954-03-09 | 1958-05-20 | Parker Rust Proof Co | Solution and method for producing heat resistant electrical insulation coatings on ferrous surfaces |
US2837449A (en) * | 1952-08-14 | 1958-06-03 | Henkel & Cie Gmbh | Composition of matter for and process of producing phosphate layers on iron surfaces |
US2856321A (en) * | 1953-10-16 | 1958-10-14 | Pullman Standard Car Mfg Co | Method of preventing oxidation of metals |
DE974004C (en) * | 1937-06-02 | 1960-08-18 | Metallgesellschaft Ag | Process to improve the non-cutting deformation of workpieces made of iron and zinc |
US3151000A (en) * | 1959-08-28 | 1964-09-29 | Hooker Chemical Corp | Method of applying highly heat resistant protective coatings to metallic surfaces |
DE980071C (en) * | 1953-09-12 | 1969-08-28 | Metallgesellschaft Ag | Solution and process for the production of heat-resistant phosphate layers for electrical insulation on iron and steel, in particular for the insulation of magnetic sheets |
-
1921
- 1921-06-22 US US479683A patent/US1428087A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974004C (en) * | 1937-06-02 | 1960-08-18 | Metallgesellschaft Ag | Process to improve the non-cutting deformation of workpieces made of iron and zinc |
US2522176A (en) * | 1947-10-14 | 1950-09-12 | Parker Rust Proof Co | Drawing ferrous wire and other metal-working processes |
US2769737A (en) * | 1952-03-26 | 1956-11-06 | Parker Rust Proof Co | Amine phosphate coating solutions and method of coating |
US2837449A (en) * | 1952-08-14 | 1958-06-03 | Henkel & Cie Gmbh | Composition of matter for and process of producing phosphate layers on iron surfaces |
DE980071C (en) * | 1953-09-12 | 1969-08-28 | Metallgesellschaft Ag | Solution and process for the production of heat-resistant phosphate layers for electrical insulation on iron and steel, in particular for the insulation of magnetic sheets |
US2856321A (en) * | 1953-10-16 | 1958-10-14 | Pullman Standard Car Mfg Co | Method of preventing oxidation of metals |
US2835618A (en) * | 1954-03-09 | 1958-05-20 | Parker Rust Proof Co | Solution and method for producing heat resistant electrical insulation coatings on ferrous surfaces |
US3151000A (en) * | 1959-08-28 | 1964-09-29 | Hooker Chemical Corp | Method of applying highly heat resistant protective coatings to metallic surfaces |
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