ALLOY FLAKE PRODUCTION APPARATUS AND PRODUCTION METHOD FOR RAW MATERIAL ALLOY FLAKES FOR RARE EARTH MAGNET USING THE APPARATUS

摘要

An alloy flake production apparatus (1) includes a crystallinity control device (2) for controlling an alloy crystal structure of fed alloy flakes to a desired state, a cooling device (3) for cooling the alloy flakes discharged from the crystallinity control device (2), and a chamber for keeping these devices under reduced pressure or under an inert gas atmosphere. The crystallinity control device (2) has a rotary heating drum (21) in a cylindrical shape for heating the fed alloy flakes, and a switching device (23) for switching between storage and discharge of the alloy flakes fed to an inner wall side of the heating drum (21), so that long-time heat treatment is uniformly applied to the alloy flakes immediately after being made by ingot crushing. The heating drum (21) preferably has a scooping blade plate (22) for scooping up alloy flakes fed to the inner wall side with its rotation.

主权项

1. An alloy flake production apparatus, comprising:
a crystallinity control device for controlling an alloy crystal structure of fed alloy flakes to a desired state; a cooling device for cooling alloy flakes discharged from the crystallinity control device; and a chamber for keeping the crystallinity control device and the cooling device under reduced pressure or under an inert gas atmosphere, the crystallinity control device including a rotary heating drum in a cylindrical shape for heating the fed alloy flakes, and a switching device for switching between storage and discharge of the alloy flakes fed to an inner wall side of the heating drum.