Cryogenic treatment attracts much attention and obtains practical application in wide fields,since it helps to improve the mechanical performance of some metal or nonmetal materials,such as strength,hardness,abradability and dimension stability.The selection of the treatment process and device is important for this technique.Based on a review of main influence factors during cryogenic treatment,some typical examples of treatment device are categorized and introduced.A short prospect is also present for futu...