Stainless steel product tubes are widely used in bathroom, kitchen utensils, furniture, and other areas. Some users need not only dimensional accuracy, but also Bull polishing treatment, especially for kitchen appliances. Stainless steel pipes have relatively high appearance requirements, and the appearance needs to be bright and clean. The Bull polishing process can not only prevent the steel pipe from scaling, keep it clean, but also improve the corrosion resistance. But how is the stainless steel product tube Bull polishing process carried out? It can be divided into the following steps:


1、 Rough grinding


The stainless steel pipes that need to be polished on the double head polishing machine are repeatedly polished with 80 # or 120 # abrasive tape until the surface of the steel pipe is flat, with the aim of preliminarily removing local depressions, welding spots, bumps, and deep scratches left by welding.


2、 Second rough grinding.


Grind the stainless steel product pipes with 180 # abrasive tape and the lines made with 120 # abrasive tape. Make the steel pipe free from scratches and bumps. During the polishing process, pay attention to the inclination angle of the sanding machine and control the pressure of the sanding machine on the welded pipe.


3、 Semi precision grinding


The stainless steel pipe after the second rough grinding is polished with 240 # abrasive tape, and the lines produced by the 180 # abrasive tape are polished off. This process mainly corrects the seams of the previous process and further refines the traces generated after the second rough grinding, making the surface scratch free and fundamentally brighter. Be careful not to create new scratches and injuries during this process, as such defects cannot be repaired in the subsequent process.


4、 Precision grinding


Grind the semi precision stainless steel pipe with 320 # abrasive tape and the lines generated by 240 # abrasive tape. The goal of this process is to completely eliminate the seams between the ground and non ground parts, and further enhance the appearance.


5、 Secondary precision grinding.


Grind the stainless steel welded pipe with 400 # abrasive tape and the lines of 320 # abrasive tape. The workpiece ground through this process is fundamentally close to the mirror effect.


6、 Semi emergent light


Repeat polishing the product with a hemp wheel 4-5 times, and use polishing white wax during the polishing process to remove the lines of 400 # abrasive belt polishing.


7、 Emitting light


Repeat polishing the semi glossy stainless steel product with a cloth wheel 4-5 times, and use stainless steel mirror wax polishing during the polishing process to achieve a mirror effect, with a mirror reflectance of 6K or 8K.


The above is the Bull polishing process of stainless steel product tubes. Through seven process steps of rough grinding, secondary rough grinding, semi precision grinding, precision grinding, secondary precision grinding, semi polishing, and polishing, different abrasive belts, hemp wheels, and cloth wheels are used to repeatedly polish, ultimately obtaining mirror stainless steel product tubes with a mirror reflectance of 6K or 8K.