Method of ironing cylindrical workpiece of austenite stainless s

Details Method of ironing cylindrical workpiece of austenite stainless s Method of ironing cylindrical workpiece of austenite stainless s

1992-09-02

1994-08-02

Crane, Daniel C.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

723794, B21D 2228

Patent

active

053334841

ABSTRACT:
A cylindrical workpiece prepared by drawing a sheet-like blank of austenite stainless steel is ironed in the axial direction in one step or in successive first and second steps. When the ironing operation is effected in one step, the wall thickness reduction percent is selected within a range of 35-45%. When the workpiece is ironed in the two steps, the first step is effected with the wall thickness reduction percent not exceeding 35%, while the second step is effected with the wall thickness reduction percent selected within a range of 35-45%.

REFERENCES:
patent: 1524183 (1925-01-01), Knaebel
patent: 1638995 (1927-08-01), Hodge
patent: 2611475 (1952-09-01), Slater
patent: 3820368 (1974-06-01), Fukuzuka et al.
patent: 3855862 (1974-12-01), Moller
patent: 4217770 (1980-08-01), Wassen
patent: 4457150 (1984-07-01), Saunders et al.
patent: 4541265 (1985-09-01), Dye et al.
patent: 4962659 (1990-10-01), Imazu et al.
patent: 5179854 (1993-01-01), Matsui et al.

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