On the surface of the stainless steel heat exchange tube sandblasting processing work:
Sand is the quartz sand with compressed air through the nozzle to advance after drying of the surface of the stainless steel tube, powerful impact on sand metal surface to remove rust, scale and other sundry.
It can remove the rust on the surface of the stainless steel tube, oxide skin, old layers of paint and other dirt. Stainless steel tube surface after sand blasting become rough and very evenly, can enhance the paint adhesion layer on the surface of stainless steel pipe. So the sand has a wide application in the actual construction.
Sand blasting with the pressure of compressed air to 3.5 ~ 5 kg/cm2. Sand suction tube before inserting sand bucket to saw a small mouth, to facilitate suck air into the sand. Clean sand requirement, there should be no sawdust, stones and other sundry, particle size between 1 ~ 2 mm, Fried dry before use.
Before sandblasting, check all the equipments are in good condition, the valve attachment should be easy. When the pressure of compressed air is 3.5 ~ 5 kg/cm2, the sand is sucked out spray, sand blasting direction as far as possible and the downstream, nozzle and stainless steel tube surface into 70. Angle, and about 10 ~ 15 cm from the metal surface.
Sandblasting processing is the advantage of simple operation, good quality and high production efficiency. The disadvantage is that produce a large amount of dust, should be separated with other wo