Method of forming closely sized openings

Details Method of forming closely sized openings Method of forming closely sized openings

1986-12-23

1988-08-02

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148134, 76108A, 29447, 29525, C21D 168, B21K 502

Patent

active

047611910

ABSTRACT:
A method of forming precision openings in hardened steel workpieces is disclosed. The method generally includes drilling nominal size openings in the workpiece while it is in a soft condition. Thereafter, sizing plugs formed from a material having a strength greater than that of the steel body during a predetermined range of temperatures are press-fitted in the openings. With the plugs in position, the body is heat treated to harden it. Subsequently, the plugs are removed and the resulting openings are found to be of an extremely uniform size without the wide variations present when hardening is performed without the sizing plugs.

REFERENCES:
patent: 3190380 (1965-06-01), Anderson

Affiliated with

Also associated with

Rating

Method of forming closely sized openings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming closely sized openings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming closely sized openings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-710358