Patent
Steel rings for bearings prodn. - by centrifugal casting with controlled cooling, and heating, followed by rolling to shape
Reads0
Chats0
TLDR
In this article, the authors proposed a method for the fabrication of ring-shaped workpieces of hypereutectoid steel, which after hardening, contains low C martensite with a dislocation substructure.Abstract:
The prodn. of ring-shaped workpieces of hypereutectoid steel, which after hardening, contains low C martensite with a dislocation substructure, comprises cooling the hollow ingot, or a section of the ingot, obtd. by centrifugal casting, from the casting temp. to is not >100 degrees below the eutectoid transformation, and re-heating the casting to is not >100 degrees C. above the temp. of the eutectoid transformation. After a spheroidal pearlite structure is obtained, the temp. is raised to is not >1150 degrees C, followed by forming a semi-finished product, e.g. by rolling, and finally applying a hardening and annealing treatment. Method utilizes fully the thermal energy supplied by the centrifugal casting of the ring, being sufficient for the subsequent forming and heat treatment, which gives a saving in time.read more
Citations
More filters
Patent
Method and apparatus for the thermomechanical treatment of seamless rings produced on radial-axial ring rolling machines
TL;DR: In this paper, a method and a device for the thermomechanical treatment of seamless steel rings produced on radial-axial ring rolling machines, particularly rings of fine grain steel, heat-treatable steel, case hardened steel, or austenitic steel, was provided.
References
More filters
Patent
Spheroidal graphite cast iron pipe of ferritic structure and method of producing the same
TL;DR: In this article, a spheroidal graphite cast iron pipe of ferritic structure was constructed by casting in a non-chilled condition and providing a controlled low rate of dissipation of the self-heat of the pipe within a heat dissipation rate controlling furnace or a sealed or insulated centrifugal casting mold.
Patent
Method for producing alloys having wear-resistant surfaces
TL;DR: Work pieces, such as sealing strips for rotary piston engines, may be formed from selected portions of these cylinders as discussed by the authors, where the component, if lighter, is concentrated in the inner surface portion of the cylinder wall, or, if heavier, the component is concentrated on the outer surface portion.