Method of manufacturing metallic press die

Details Method of manufacturing metallic press die Method of manufacturing metallic press die

1993-06-01

1994-11-08

Heinrich, Samuel M.

Metal fusion bonding

Process

With shaping

228231, 148517, 148578, 219 77, 219137WM, B23K 3102

Patent

active

053619684

ABSTRACT:
A metallic press die having an edge portion or high pressure portion for processing a workpiece therewith is made by overlaying a welding material to that portion of a base material for the metallic press die which forms the edge portion or high pressure portion, and then machining an overlaid portion into a predetermined shape of the edge portion or high pressure portion. The welding material has a hardness after welding of HRC 45 or below. After the machining step, the overlaid portion is subjected to a subzero treatment to increase the hardness of the overlaid portion. The welding material contains, as a basic composition thereof, 0.5-1.5% by weight of carbon (C), 0.2 -2.0% by weight of silicon (Si), 0.3-6.0% by weight of manganese (Mn), 0.3-10.0% by weight of chromium (Cr), 0.3-10.0% by weight of cobalt (Co), and the remaining parts of iron (Fe) inclusive of unavoidable impurities, and wherein a starting temperature of martensitic transformation is 150 .degree. C. or below.

REFERENCES:
patent: 2824818 (1958-02-01), Swenson
patent: 3046167 (1962-07-01), Waxweiler et al.
patent: 3282748 (1966-11-01), Martens
patent: 3615920 (1971-10-01), Talento
patent: 3840366 (1974-10-01), Hirayama et al.
patent: 4846904 (1989-07-01), Arai et al.

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