GB620516A - Improvements in or relating to the prevention of permanent deformation of steel or alloy steel during surface hardening - Google Patents
Improvements in or relating to the prevention of permanent deformation of steel or alloy steel during surface hardeningInfo
- Publication number
- GB620516A GB620516A GB29680/46A GB2968046A GB620516A GB 620516 A GB620516 A GB 620516A GB 29680/46 A GB29680/46 A GB 29680/46A GB 2968046 A GB2968046 A GB 2968046A GB 620516 A GB620516 A GB 620516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deformation
- steel
- permanent deformation
- heating
- hardening
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
620,516. Heat-treating. STIVIN, J. Oct. 4, 1946. No. 29680. Convention date, Jan. 5, 1944. [Class 72] In a method of eliminating permanent deformation in the surface hardening of steel and alloy steel, the temporary deformation of the article during surface heating is restricted so that the suppressed part of the deformation causes a compression of the heated surface resulting in a permanent deformation which compensates the deformation due to the increase in the specific volume of the surface layer on quenching. As shown, a flat strip or ruler 1 to be hardened on its lower surface rests on a heating device 3 fed with high frequency current. Adjustable stops 4 disposed in arms 5 of a stirrup-like device 6 suppress the bending upwards of the ends to such an extent that, on quenching, the ruler remains flat. In a modification Figs. 6, 7, applied to the suface hardening of rails, rollers 41, 42. and 43 suppress part of the deformation due to heating the surface 38 by the heater 39. The invention is also described applied to piston rings, Fig. 3 (not shown) bevel gears, Fig. 5 (not shown) and connecting rod heads, Fig. 4 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE620516X | 1944-01-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB620516A true GB620516A (en) | 1949-03-25 |
Family
ID=6577470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29680/46A Expired GB620516A (en) | 1944-01-05 | 1946-10-04 | Improvements in or relating to the prevention of permanent deformation of steel or alloy steel during surface hardening |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB620516A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2599324A (en) * | 1949-04-15 | 1952-06-03 | Forker Corp | Beam cutting method |
| US2867556A (en) * | 1953-09-18 | 1959-01-06 | Giddings & Lewis | Method of flame hardening |
| DE1255689B (en) * | 1962-10-12 | 1967-12-07 | United States Steel Corp | Process for the heat treatment of rail head surfaces |
| FR2543864A1 (en) * | 1983-04-08 | 1984-10-12 | Uni Cardan Ag | PROCESS FOR MANUFACTURING AXIS OR TREE TOURILLONS |
-
1946
- 1946-10-04 GB GB29680/46A patent/GB620516A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2599324A (en) * | 1949-04-15 | 1952-06-03 | Forker Corp | Beam cutting method |
| US2867556A (en) * | 1953-09-18 | 1959-01-06 | Giddings & Lewis | Method of flame hardening |
| DE1255689B (en) * | 1962-10-12 | 1967-12-07 | United States Steel Corp | Process for the heat treatment of rail head surfaces |
| FR2543864A1 (en) * | 1983-04-08 | 1984-10-12 | Uni Cardan Ag | PROCESS FOR MANUFACTURING AXIS OR TREE TOURILLONS |
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