How to control the temperature of parts during spraying

       There are three ways to control the temperature of the parts during the spraying process:



     1) Control the appropriate spraying distance, 120mm~130mm is appropriate when spraying self-fluxing alloy powder, and 60mm~120mm when spraying ceramic powder; the specific should be determined according to the spraying process;

     2) The intermittent spraying method is used, that is, the total thickness to be sprayed is divided into two or three sprays, and the temperature rise of the parts is guaranteed to be within the limit temperature during each spraying, and then the parts are cooled to a low temperature before spraying a second time;

     3) During the spraying process, use an appropriate method to cool the appropriate parts of the parts. If compressed air is used for cooling, the blowing air should be directed towards the parts that are not sprayed. The cooling gas should be very clean and dry to avoid weakening the bonding due to contamination of the sprayed surface. , interlayer separation; in addition, liquid carbon dioxide can be sprayed behind the spray point of the coating during spraying.