Institute of New Materials, Guangdong Academy of Sciences

Xingchi Chen

Min Liu

Li Qiu

Changguang Deng

Chunming Deng

Chang Li

Mingjiang Dai

Jifu Zhang

Lawn mower

Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.

Gm type cryogenic refrigerator rotary valve

Growing community of inventors

Guangdong, China

Xingchi Chen