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US 4,421,570 AGranted
Making molds for continuous casting
AssigneeKabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft
InventorHorst Gravemann
Life of this patent
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Abstract
An age-hardening copper alloy is used, alloy components being zirconium, nickel, chromium, cobalt, phosphorus, and beryllium, to make a tubular blank and solution heat-treating same; after a cold-working step, the pre-sized blank is age-hardened at from 400.degree. C. to 600.degree. C. for at least 15 minutes and explosion-formed in order to obtain the desired size, shape, and dimensions.
Claims9
A method of making tubular, curved or straight molds for continuous casting, comprising the steps of
- providing an age-hardening copper alloy;
- making a tube from the alloy;
- solution heat-treating the tube material;
- subsequently age-hardening the tube at from 400.degree. C. to 600.degree. C. for at least 15 minutes for obtaining internal precipitation;
- and
- cold-working the tube by explosion-forming in order to obtain its final size as to its interior serving as a mold cavity.
3 more elements
Dependencies are inferred from the claim text.