Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1994-01-14
1995-04-18
Dean, Richard O.
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
30383, 76112, C21D 802
Patent
active
054074967
ABSTRACT:
A method for the production of a slideway-type guide for driven chains such as cutting chains includes the application of a wear-resistant hard metal alloy as a running surface to the slideway of the guide. A bar-shaped blank with a dentritic structure, made from the alloy, is produced to form the running surface, a suction casting process being used in particular for this purpose. The blank is treated by hot isostatic pressing with high pressure at a high temperature. This is followed by an annealing process over a number of hours, at the end of which the structure of the alloy is so altered that the previously acicular and, to some extent, lattice-type carbides are dispersed and converted to rounded and, to some extent, spheroidal bodies which are densely and evenly distributed throughout the alloy. The alloy thereby becomes highly wear-resistant. The bars are then shaped so as to fit onto the slideway, and are fixedly connected thereto.
REFERENCES:
patent: 3241228 (1966-03-01), Rayniak et al.
patent: 3758347 (1973-09-01), Stalker
patent: 3858321 (1975-01-01), Conaty
patent: 4641432 (1987-02-01), Kume
Bartmann Udo
Stehle Hans P.
Dean Richard O.
Ip Sikyin
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