CPC B23K 1/19 (2013.01) [B23K 35/302 (2013.01); B23K 35/3033 (2013.01); C21D 6/001 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C22C 30/02 (2013.01); C22C 38/04 (2013.01); C22C 38/08 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); B23K 2103/04 (2018.08)] | 20 Claims |
1. A method of manufacturing a desired metal part which comprises (1) providing a powder metal sinter hard steel component and a wrought steel stamping component; (2) affixing the powder metal sinter hard steel component and the wrought steel stamping component together with a brazing filler metal being alloyed at the interface between the powder metal sinter hard steel component and the wrought steel stamping component; (3) sinter brazing and sinter hardening the powder metal sinter hard steel component and the wrought steel stamping component together to produce an in-process
metal part, wherein the sinter brazing and sinter hardening is carried out under conditions that include a preheating step, a main heating step, and a rapid cooling step, wherein the preheating step is carried out at a temperature which is within the range of 1550° F. to 1750° F., wherein the main heating step is carried out at a temperature which is above the melting point of the brazing filler metal at a temperature which is within the range of 2040° F. to 2100° F.; and (4) tempering the in-process metal part to produce the desired metal part.
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