GB744072A - Method and apparatus for controlling carburization - Google Patents
Method and apparatus for controlling carburizationInfo
- Publication number
- GB744072A GB744072A GB14072/53A GB1407253A GB744072A GB 744072 A GB744072 A GB 744072A GB 14072/53 A GB14072/53 A GB 14072/53A GB 1407253 A GB1407253 A GB 1407253A GB 744072 A GB744072 A GB 744072A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- protected
- rigid body
- rigid
- case
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/04—Treatment of selected surface areas, e.g. using masks
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
744,072. Cementation. WALKER, R. M., and MILLER, A. M., [trading as WALMIL CO.]. May 19, 1953 [May 19, 1952], No. 14072/53. Class 72. A method of controlling the carbon content in surface layers of ferrous articles comprises providing an enclosed space about the surface, providing within the enclosed space a dry, rigid, self-supporting body of an oxidising-decarburising agent and an inert binder, and heating the articles to the reaction temperature. The rigid body may comprise iron oxide and clay. In a casehardening operation the rigid body prevents case-hardening of the protected surface, and in the heat treatment of a high carbon steel article the carbon content of the protected surface may be reduced, the amount of reduction may be controlled by varying the size or number of the rigid bodies. As shown, applied to the case hardening of the outer surface of an annular ring, the ring 32 is placed on a support 34, a rigid body 38 is placed within the ring, and a cover 36 laid on the ring. When the ring is case hardened the surface 30 is protected against carburising and remains soft. The shape of the rigid body may be varied to suit the shape of the surface to be protected.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US744072XA | 1952-05-19 | 1952-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB744072A true GB744072A (en) | 1956-02-01 |
Family
ID=22119398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14072/53A Expired GB744072A (en) | 1952-05-19 | 1953-05-19 | Method and apparatus for controlling carburization |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB744072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634409A1 (en) * | 1988-07-22 | 1990-01-26 | Mitsubishi Electric Corp | PROCESS FOR MANUFACTURING A ROTARY OUTPUT SHAFT |
-
1953
- 1953-05-19 GB GB14072/53A patent/GB744072A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634409A1 (en) * | 1988-07-22 | 1990-01-26 | Mitsubishi Electric Corp | PROCESS FOR MANUFACTURING A ROTARY OUTPUT SHAFT |
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