What are the common problems of extra large stainless steel hollow spheres?
large stainless steel hollow sphere weld defects: the weld defects are serious, and the manual mechanical grinding method is used to make up for the grinding marks, resulting in uneven surface and affecting the appearance. The surface of the extra large stainless steel hollow sphere is inconsistent: only the weld seam is pickled and passivated, which also causes uneven surface and affects the appearance. The scratches of the extra large stainless steel hollow sphere are difficult to remove: the whole pickling passivation, and the various scratches generated during the processing cannot be removed, moreover, impurities such as carbon steel and spatter adhered to the stainless steel surface due to scratches and welding spatter cannot be removed, resulting in chemical corrosion or electrochemical corrosion and rust in the presence of corrosive medium.
uneven polishing and passivation of extra large stainless steel hollow spheres: pickling and passivation treatment is carried out after manual polishing and polishing, which makes it difficult to achieve uniform and consistent treatment effect for workpieces with larger area, can not get the ideal uniform surface. And the cost of working hours and accessories is also high. The pickling capacity of extra large stainless steel hollow spheres is limited: pickling passivation paste is not universal, and it is difficult to remove black oxide scale produced by plasma cutting and flame cutting.
scratches caused by human factors of extra large stainless steel hollow spheres are more serious: During hoisting, transportation and structural processing, scratches caused by human factors such as bumping, dragging and hammering are more serious, which makes the surface treatment more difficult and is also the main reason for corrosion after treatment. Extra large stainless steel hollow ball equipment factors: in the process of bending and bending of profiles and plates, scratches and creases are also the main causes of corrosion after treatment. Other factors of extra large stainless steel hollow ball: in the process of purchasing stainless steel raw materials and storing extra large stainless steel hollow balls, bumps and scratches caused by hoisting and transportation are also serious, which is also one of the causes of corrosion.
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