Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1996-08-28
1998-06-02
Wyszomierski, George
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148638, 148644, 148660, 148714, C21D 106
Patent
active
057593094
ABSTRACT:
A process for selectively hardening a forged track chain link has the following steps. A forged track chain link having a pad portion, a rail portion, a first side portion and a second side portion, is provided. A quench tank is provided and adapted for spraying one or more of the track chain link portions with a quenchant at a controlled amount of quenchant flow rates, quenchant pressures and quench times. One or more of the track chain link portions are sprayed with the quenchant at a controlled amount of one or more of a plurality of quenchant flow rates, a plurality of quenchant pressures and a plurality of quench times. The pad and rail portions are simultaneously hardened to predetermined respective hardnesses.
REFERENCES:
patent: 2890975 (1959-06-01), Lenz
patent: 4596612 (1986-06-01), Fradique
patent: 5419792 (1995-05-01), King et al.
Berndt Charles F.
Biltgen Gary L.
Bowman David E.
Watts Kenneth R.
Caterpillar Inc.
Khosla Pankaj M.
Wyszomierski George
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