Introducing the fine polishing effect and method of stainless steel pipe elbows

Stainless steel pipe elbows are connected, vibration-resistant, and the connection parts are made at one time, which avoids the possibility of loosening of the "live joint", is convenient for construction, avoids on-site welding and threading operations, and the service life of stainless steel elbows is good. Field corrosion test data show that the service life of stainless steel elbows can reach 100 years, and stainless steel elbows require almost no maintenance. Therefore, its performance-price ratio is good, the operating life cost is low, and the economic benefits are obvious.

The polishing machine used for fine polishing of stainless steel elbows is basically the same as the equipment used for rough polishing, and its speed is 150-200 rpm. Fine polishing uses soft wool fabrics, usually fine woolen cloth for polishing. The polishing powder should be finer, and the chromium oxide sold on the market can be used for fine polishing after water selection and floating. If you want the best polishing effect, you can use fine magnesium oxide or aluminum oxide as a polishing liquid for manual polishing on suede. The pressure applied during fine polishing should be lighter than that during rough polishing, the polishing liquid should not be too thick, and the velvet plate should maintain the humidity. If the wool is too dry, it is easy to scratch the grinding surface, resulting in deeper scratches. If the wool is too wet, it is not good, as it will oxidize the grinding surface. The humidity of the wool gradually decreases as the polishing process proceeds. Observe the fine polishing of the sample frequently. After picking up, there is no polishing liquid or small water droplets on the polished surface of the sample. When the water film that dries up after blowing is maintained, polish gently. When the rough polishing marks of the sample disappear, the matrix is ​​clear, and there is no water film on the polished surface of the sample after picking up, the fine polishing of the sample is appropriate. If magnesium oxide polishing powder is used, it should be prepared as it is used. After use, the wool plate should be removed and carefully cleaned in running water to prevent deterioration. During the polishing process, the sample should not be polished for too long or under too much pressure, whether it is rough polishing or fine polishing, otherwise the phases in the alloy will be thrown away, the deformation layer of the grinding surface will be deepened, thereby affecting the polishing quality and drawing wrong organizational conclusions in the next observation.