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Molding roller of thin-wall titanium welding pipe

A technology of titanium welded pipes and rollers, which is applied in the production field of thin-walled titanium welded pipes, can solve the problems of scratching thin-walled titanium welded pipes, build-up, and short service life.

Inactive Publication Date: 2010-05-12
HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Molding roller of thin-wall titanium welding pipe
  • Molding roller of thin-wall titanium welding pipe
  • Molding roller of thin-wall titanium welding pipe

Examples

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Effect test

Embodiment 1

[0012] Depend on figure 1 It can be seen that a thin-walled titanium welded pipe forming roll includes a fine forming roll pair and a sizing roll pair made of a copper alloy material, and a forming roll 1 corresponding to the weld seam in the fine forming roll pair and the sizing roll pair. Part 2 is a wear-resistant material that is incompatible with titanium.

[0013] Both ends of the forming roll 1 of the present invention are made of copper alloy material, and the forming part 2 is made of a wear-resistant material incompatible with titanium (the alloy tool steel Cr12Mov alloy material in this embodiment). The Cr12Mov material is quenched, and the hardness is HRC60. After the two grinding surfaces are finely ground, they are clamped with copper alloy materials on both sides and processed as a whole to form the forming roll 1 . Since the hardness and rigidity of Cr12Mov alloy material is better than that of copper alloy material, the service life of forming roll 1 is impro...

Embodiment 2

[0015] Because buildup generally occurs in the area corresponding to the weld seam of the titanium welded pipe in the forming part 2, that is, the buildup part 3, therefore, the buildup part 3 in the forming part 2 of the present invention is a wear-resistant material that is incompatible with titanium ( This embodiment is chrome-nickel steel material). The rest are the same as embodiment 1.

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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...

Claims

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Application Information

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IPC IPC(8): B21B27/00B21B27/02
Inventor 何忠民钟敏易永光
Owner HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO LTD
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