Apex seal for rotary piston engine and method for manufacturing

Details Apex seal for rotary piston engine and method for manufacturing Apex seal for rotary piston engine and method for manufacturing

1987-11-06

1989-09-05

Kastler, S.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148321, 148903, C21D 500

Patent

active

048635332

ABSTRACT:
An apex seal consisting of 3.0 to 4.0 wt % of C, 1.5 to 2.5 wt % of Si, 0.3 to 1.0 wt % Mn, 0.05 to 0.3 wt % of P, less than 0.1 wt % of S, 0.005 to 0.025 wt % of Mg or Ce, 0.5 to 2.0 wt % of Cu and/or 0.5 to 3.0 wt % of Ni, 0.4 to 1.0 wt % of Cr, 1.0 to 2.0 wt % of Mo and/or 0.1 to 0.5 wt % of V with the balance of Fe, being formed in the sliding surface portion with a sorbite matrix structure in which carbides are dispersed in a matrix of sorbite and in the matrix portion of the material other than the sliding surface portion with a sorbite structure. The apex seal has an excellent bending strength and wear resistance.

REFERENCES:
patent: 3658451 (1972-04-01), Gomada
patent: 4000011 (1976-12-01), Sato et al.
patent: 4025366 (1977-05-01), Ruf et al.
patent: 4153477 (1979-05-01), Beyer et al.

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