Hard-surfaced cast iron articles and method and apparatus for ma

Details Hard-surfaced cast iron articles and method and apparatus for ma Hard-surfaced cast iron articles and method and apparatus for ma

1981-07-06

1984-06-05

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

291484D, 148 39, 148145, C21D 502

Patent

active

044526474

ABSTRACT:
A method for manufacturing hard-surfaced cast iron articles, such as rolls for use in the steel industry or paper calendering rolls, includes the steps of casting the article in a manner such that upon cooling the crystal structure of the article is that of grey cast iron and remelting the surface to be treated by directing at least one electron beam onto a zone of the surface to be treated and cooling the remelting zones in a rapid manner so that a hard surface is obtained. The electron beam may be directed onto the zone of the surface to be treated in a punctiform and/or lineal manner, in one or a plurality of partial steps, and in a continuous or stepwise manner. The apparatus of the invention includes at least one electron gun, apparatus for mounting the electron gun and the article relative to each other such that the electron gun can direct an electron beam onto the zone of the surface to be treated to remelt the same and apparatus for displacing the electron gun and article relative to each other.

REFERENCES:
patent: 2691330 (1954-10-01), Van Sciver
patent: 3838288 (1974-09-01), Stolz et al.
patent: 4000011 (1976-12-01), Sato et al.
patent: 4154565 (1979-05-01), Hyde et al.
Metals Handbook, vol. 4, 9th edition, 1981, pp. 518-521, American Soc. for Metals.

Affiliated with

Also associated with

Rating

Hard-surfaced cast iron articles and method and apparatus for ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hard-surfaced cast iron articles and method and apparatus for ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hard-surfaced cast iron articles and method and apparatus for ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1496000