Patent · US Expired

Method and apparatus for heat treatment of material to be worked on, especially of aluminum alloys or magnesium alloys

US4135704A · kind A · utility

6Cited by

14References

14Claims

0Family size

Assignees

Prolizenz Aktiengesellschaft · CH
Friedrich W. Elhaus · CH

Inventors

Friedrich W. Elhaus · Radolfzell, DE
Bernhard Hilge · Mettmenstetten, CH

Key dates

Filing date	Mar 22, 1976
Grant date	Jan 23, 1979
Priority date	—
Expiry date	Mar 22, 1996

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27M2001/1552
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

Apparatus for heat treatment of metal pieces such as billets, ingots, bars and the like, by pre-heating using direct flame impingement in a pre-heating furnace and then transferance into a holding furnace using forced hot air circulation where the metal pieces are held for the time required at the desired heat treatment temperature.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.