GB776587A - Controlled surface hardening of heat treated metallic articles - Google Patents
Controlled surface hardening of heat treated metallic articlesInfo
- Publication number
- GB776587A GB776587A GB17733/55A GB1773355A GB776587A GB 776587 A GB776587 A GB 776587A GB 17733/55 A GB17733/55 A GB 17733/55A GB 1773355 A GB1773355 A GB 1773355A GB 776587 A GB776587 A GB 776587A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- shoe
- quenching
- shoes
- orifice
- 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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- 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
- C21D2221/00—Treating localised areas of an article
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 Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
776,587. Surface hardening metal articles. CATERPILLAR TRACTOR CO. June 20, 1955 [April 26, 1955], No. 17733/55. Class 72 The thickness of the hardened layer in the surface hardening of metallic article is controlled by subjecting the whole surface to a flow of quenching liquid which contains adjacent zones having different heat extracting properties. As shown, applied to track shoes, the shoes 15 after heating in a furnace 11 pass into quenching device 10 where they are subjected to a flow of quenching liquid over their entire surface, any excess liquid being removed by a scraper 28. The quenching device comprises a tank 31, containing a constant head of liquid, from which the liquid is fed to an elongated narrow orifice 38 defined by an adjustable .plate 37 and a body portion 32. The orifice is further divided into. zones by partitions normal to the opening. The shoes pass through an opening having a shape conforming to the shape of the shoe, the orifice forming the outer edge of the opening. Quench liquid flows out of the orifice over the shoe, the pressure, temperature, or volume of liquid' being controlled in each zone and dependent on the cross-section of the shoe passing the zone. Liquid may be prevented from flowing backwards by a jet of air issuing from a nozzle 66. Prior to entering the quenching chamber selected parts of the shoe e.g. bolt holes, may be subjected to cooling by jets of air through apertures in headers 76 and the lower surface of the shoe may be subjected to a quench before the upper .surface. The shoes may be fed through the device by a system of conveyer rollers driven by motors 13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US776587XA | 1955-04-26 | 1955-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB776587A true GB776587A (en) | 1957-06-12 |
Family
ID=22139331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17733/55A Expired GB776587A (en) | 1955-04-26 | 1955-06-20 | Controlled surface hardening of heat treated metallic articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB776587A (en) |
-
1955
- 1955-06-20 GB GB17733/55A patent/GB776587A/en not_active Expired
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