Molding roller of thin-wall titanium welding pipe

Abstract

The invention discloses a molding roller of a thin-wall titanium welding pipe with long service life, comprising a precise molding roller pair and a sizing roller pair which are made of copper alloy material. The molding roller of the thin-wall titanium welding pipe is characterized in that a molding parts (2) of molding rollers (1) which correspond to welding lines and are in the precise molding roller pair and the sizing roller pair are made of wearable material which is not compatible with titanium material. In the invention, the molding part or an accumulating tumor part of the molding rollers is made of Cr12Mov alloy material so that the difficult problem that the surface of the titanium welding pipe is easily scratched is solved, the problem of scratching the titanium welding pipe due to high strength of the welding lines and weld beadings is also solved, the service life of the roller is improved to be more than three times that of the original molding roller, and the Cr12Mov alloy material is not compatible with the titanium material so as to reduce the possibility of generating accumulating tumors on the surface of the molding roller.

Description

Technical field: [0001] The invention relates to the production of a thin-walled titanium welded pipe, in particular to a thin-walled titanium welded pipe forming roll. Background technique: [0002] With the continuous development of nuclear power and thermal power in my country, the application of thin-walled titanium welded pipes is becoming more and more extensive. The equipment application of titanium welded pipe is improved on the basis of stainless steel welded pipe equipment. The basic principle is similar, but the processing technology is different. The most important thing is that there is a big difference in the forming rolls. Because titanium and stainless steel are very different in material, thin-walled titanium belt has high specific strength, high yield strength, high elasticity, and is difficult to form. The hardness of the weld is higher than that of the original base material. Therefore, in the design of the pass There is a certain degree of difficulty. T...

AI Technical Summary

Problems solved by technology

However, in the production process, due to the mutual friction between the thin-walled titanium welded pipe and the forming roll surface, the traditional copper alloy roll is easy to wear and has a short service life. Nodules are formed, and its strength is higher than that of copper alloy rolls. It is easy to generate nodules on the surface of the forming roll corresponding to the weld and scratch the surface of the thin-walled titanium welded pipe.

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