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Title:
DEVICE AND METHOD FOR CONTINUOUS HEAT TREATMENT OF ALLOY WORKPIECE OR METAL WORKPIECE
Document Type and Number:
WIPO Patent Application WO/2019/148882
Kind Code:
A1
Abstract:
Disclosed are a device and method for continuous heat treatment of a sintered Nd-Fe-B-based magnet workpiece. The device comprises a first heat treatment chamber, a first cooling chamber, a second heat treatment chamber and a second cooling chamber which are successively and continuously arranged, and a conveying system arranged between the chambers and used for conveying the alloy workpiece or the metal workpiece, wherein the first cooling chamber and the second cooling chamber both use an air-cooling system, the temperature of cooling air inside the first cooling chamber is above 25 ℃ and differs from the temperature for heat treatment inside the first heat treatment chamber by at least 450 ℃, and the temperature of cooling air inside the second cooling chamber is above 25 ℃ and differs from the temperature for heat treatment inside the second heat treatment chamber by at least 300 ℃. The device and method for the continuous heat treatment can increase the cooling rate and the production efficiency, and improve the performance and uniformity of a product.

Inventors:
WANG, Qingjiang (New Industrial District, Economic Development Zone Changtin, Longyan Fujian 0, 366300, CN)
LUO, Ying (No.1005 Anling Road, Huli DistrictXiamen, Fujian 5, 361015, CN)
WU, Jianpeng (No.1005 Anling Road, Huli DistrictXiamen, Fujian 5, 361015, CN)
Application Number:
CN2018/109524
Publication Date:
August 08, 2019
Filing Date:
October 09, 2018
Export Citation:
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Assignee:
FUJIAN CHANGTING GOLDEN DRAGON RARE-EARTH CO., LTD. (New Industrial District, Economic Development Zone Changtin, Longyan Fujian 0, 366300, CN)
International Classes:
C21D1/00; F27B5/05
Foreign References:
CN103996521A2014-08-20
CN103231059A2013-08-07
CN107406900A2017-11-28
US6147328A2000-11-14
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