Compound steel workpiece

Details Compound steel workpiece Compound steel workpiece

1989-06-20

1992-03-03

Yee, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428586, 425168, 425201, 425204, 228131, 228193, 228126, 228235, B32B 1500

Patent

active

050932098

ABSTRACT:
A compound steel workpiece and a process for its production, wherein a support jacket is provided with at least one recess, which in turn is furnished with a lining resistant to attrition and corrosion, which lining is connected to the support jacket by a metal bond. In the process, which has particular application in the production of double or multiple screw cylinders for use in plastics processing, the support jacket is provided with at least one core at the point(s) at which the recess(es) are desired, is subjected to hot-forming, along with the core(s), at an appropriate temperature, in particular for cross-sectional reduction a cross-sectional shape deviating from that of a circle is imparted to the core(s) and the recess(es) are created in the core(s).

REFERENCES:
patent: 4314007 (1982-02-01), Gessinger
patent: 4943489 (1990-07-01), Kuhara et al.

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