Fujian Changting Golden Dragon Rare-earth Co., Ltd

Qingjiang Wang

Zongbo Liao

Yulin Lin

Jianpeng Wu

Changgeng Huang

Disclosed are a device and method for continuously performing grain boundary diffusion and heat treatment, characterized in that the alloy workpiece or the metal workpiece are arranged in a relatively independent processing box together with a diffusion source; the device comprises, in successive arrangement, a grain boundary diffusion chamber, a first cooling chamber, a heat treatment chamber, and a second cooling chamber, and a transfer system provided between various chambers for delivering the processing box; each of the first cooling chamber and the second cooling chamber uses an air cooling system, and the cooling air temperature of the first cooling chamber is above 25&#xb0; C. and at least differs by 550&#xb0; C. from the grain boundary diffusion temperature of the grain boundary diffusion chamber; the cooling air temperature of the second cooling chamber is above 25&#xb0; C. and at least differs by 300&#xb0; C. from the heat treatment temperature of the heat treatment chamber; and the cooling chamber has a pressure of 50 kPa to 100 kPa. The device provided by the present invention can increase the cooling rate and production efficiency, and improve product consistency.

Device and method for continuously performing grain boundary diffusion and heat treatment

Disclosed are a continuous heat treatment device and method for a sintered Nd&#x2014;Fe&#x2014;B magnet workpiece. The device comprises a first heat treatment chamber, a first cooling chamber, a second heat treatment chamber, and a second cooling chamber continuously disposed in sequence, as well as a transfer system disposed among the chambers to transfer the alloy workpiece or the metal workpiece; both the first cooling chamber and the second cooling chamber adopt a air cooling system, wherein a cooling air temperature of the first cooling chamber is 25&#xb0; C. or above and differs from a heat treatment temperature of the first heat treatment chamber by at least 450&#xb0; C.; a cooling air temperature of the second cooling chamber is 25&#xb0; C. or above and differs from a heat treatment temperature of the second heat treatment chamber by at least 300&#xb0; C. The continuous heat treatment device and method can improve the cooling rate and production efficiency and improve the properties and consistency of the products.

Growing community of inventors

Province, China

Qingjiang Wang