Today, Mingxin Stainless Steel will share with you the method of cleaning the grease on the surface of stainless steel heat exchange tubes. The oil stains on the surface of stainless steel heat exchange tubes can be cleaned by the following methods.
1. Use the nitric acid (according to the volume) of 12~15 of the frontier defense certificate to carry out chemical degreasing treatment under the condition of 40~60 for 2~4 hours.
2. Submerge the heat exchange tubes into the water tank, and pay attention to the placement position to prevent air in the tubes.
3. When soaking, the stainless steel heat exchange tube should be moved up and down or rotated back and forth, in order to keep the solution in the cavity constantly changing and improve the cleaning effect. If necessary, the stainless steel heat exchange tube should be taken out, rinsed with water and then soaked.
4. The chemical degreasing is carried out in the immersion tank. The degreasing tank is made of steel plate, and the inner wall is covered with PVC or polyethylene.
5. Chemical degreasing until the surface of the fitting is completely wetted by water.