Method of manufacturing a hollow stabilizer

Details Method of manufacturing a hollow stabilizer Method of manufacturing a hollow stabilizer

1984-02-16

1985-08-06

Stallard, Wayland

Metal treatment

Compositions

Heat treating

148 12B, C21D 908

Patent

active

045334021

ABSTRACT:
A hollow stabilizer manufactured from a material obtained by adding a minute amount (0.001-0.01% by weight) of boron to either a carbon steel tubing having a relatively low carbon concentration of 0.20-0.35% for mechanical and structural purposes or to a carbon steel tubing for general structural purposes. The carbon steel tubing thus provided is bent in a prescribed stabilizer form. The bent tubing is water quenched, for example, to a greater hardness than HRC 43. The water-hardened bent tubing is later tempered to a hardness HRC, ranging between 36 and 43, at a temperature of, for example, 300.degree.-380.degree. C. for a proper length of time. The hollow stabilizer obtained by the aforementioned heat-treating steps has a much greater fatigue strength.

REFERENCES:
patent: 4138141 (1979-02-01), Andersen
patent: 4231555 (1980-11-01), Saito
patent: 4372576 (1983-02-01), Inoue
patent: 4378122 (1983-03-01), Ohno et al.

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