George L Satava

41429230, Mar 6, 1979

Aug 19, 1977

5/826187

George L. Satava - Hudson OH

Midland Steel Products Co. - Cleveland OH

C21D 118

148131

This invention relates to a method of induction heat treating and restraint quenching structural members, particularly those of low carbon alloy steel (lean content), to a uniform martensitic structure, such that distortion of the member due to rapid quenching is controlled. The members would generally be of a channel shape and they would be heated by induction preheating in several stages to austenitizing temperature, namely 1450. degree. to 1750. degree. F. , and then liquid quenching the channel member and restraining the channel on both its web and its flanges to below 900. degree. F. to minimize distortion and then tempering the channel at a temperature of 750. degree. to 1000. degree. F. and again restraining it while cooling to avoid distortion. These would generally be truck side rails and they would be low carbon alloy steels (lean content), approximate carbon content of 0.

58855220, Mar 23, 1999

Sep 12, 1996

8/713165

Angelo A. Giannini - Youngstown OH
George Satava - Hudson OH
Ronald Szelesta - Strongsville OH

Midland Steel Products Co. - Cleveland OH

C21D 1100

266 90

An apparatus (20) for induction heat treating, restraint quenching, and straightening an associated carbon steel truck structural member (30), having a web (32) and at least one flange (34) substantially perpendicular thereto, comprises a heat treating apparatus (22) for induction heating and restraint quenching the associated structural member (30). The heat treating apparatus (22) is operatively connected to a cooling conveyor (50). The cooling conveyor (50) is adapted for receiving the associated structural member (30) from the heat treating apparatus (22). A testing apparatus (24) is included for hardness testing the heat treated associated structural member. The testing apparatus (24) is adapted for receiving the associated structural member (30) from the cooling conveyor (52). A conveyor (54) is adapted for receiving the associated structural member (30) from the testing apparatus (24). A roller straightener (26) is operatively connected to the conveyor (54).

59682930, Oct 19, 1999

Dec 21, 1998

9/217111

Angelo A. Giannini - Youngstown OH
George Satava - Hudson OH
Ronald Szelesta - Strongsville OH

Midland Steel Products Co. - Cleveland OH

C21D 800
C21D 154

148508

An apparatus (20) for induction heat treating, restraint quenching, and straightening an associated carbon steel truck structural member (30), having a web (32) and at least one flange (34) substantially perpendicular thereto, comprises a heat treating apparatus (22) for induction heating and restraint quenching the associated structural member (30). The heat treating apparatus (22) is operatively connected to a cooling conveyor (50). The cooling conveyor (50) is adapted for receiving the associated structural member (30) from the heat treating apparatus (22). A testing apparatus (24) is included for hardness testing the heat treated associated structural member. The testing apparatus (24) is adapted for receiving the associated structural member (30) from the cooling conveyor (52). A conveyor (54) is adapted for receiving the associated structural member (30) from the testing apparatus (24). A roller straightener (26) is operatively connected to the conveyor (54).