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Method for producing multi-metal wear-resistant steel pipe

A production method and multi-metal technology, applied in the field of pipe production and manufacturing, can solve problems such as affecting product quality, steel pipes are easily burnt through, multi-metal layer caving, etc., and achieve the effects of good toughness, excellent wear resistance and high strength.

Inactive Publication Date: 2009-10-14
YANGZHOU JUYE WEAR-RESISTANT COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The multi-metal wear-resistant steel pipe products in the prior art are manufactured by the self-propagating high-temperature synthetic centrifugal method. The high-temperature molten multi-metal liquid contacts the inner wall of the steel pipe, making the inner wall of the steel pipe in a semi-molten state. During this process, the pipe of the steel pipe The thinner the wall, the easier it is for the steel pipe to be burned through, and the inner multi-metal layer will also collapse or crack due to excessive stress between the steel pipe and the multi-metal, seriously affecting the quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for producing a multi-metal wear-resistant steel pipe, characterized in that it comprises the following steps:

[0013] 1), mixing materials: get the following components by weight and mix evenly: copper-chromium alloy powder 58% (wherein the preferred weight ratio of copper and chromium is 3; 2), iron oxide powder 18%, aluminum powder 23.999%, nano-carbide Silicon fume 0.001%;

[0014] 2), take a seamless steel pipe with a wall thickness of 3 mm for cutting and processing, and cut off an appropriate length;

[0015] 3), the steel pipe in step 2) is fixed on the pipe molding machine, and the steel pipe is rotated at a speed of 1400rpm;

[0016] 4), Centrifugal casting: Feed the mixture powder obtained in step 1) into the inner cavity of the steel pipe, and ignite it, generate high temperature to make each component in a molten state, and distribute evenly along the pipe wall, and centrifugal separation occurs at the same time, until the aluminum The complete ...

Embodiment 2

[0019] Another production method of multi-metal wear-resistant steel pipe is characterized in that it comprises the following steps:

[0020] 1), mixing: take the following components by weight and mix evenly: copper-chromium alloy powder 61%, iron oxide powder 16.997%, aluminum powder 22%, nano-silicon carbide powder 0.003%;

[0021] 2) Take a straight seam steel pipe with a wall thickness of 5mm for cutting and processing, and cut off an appropriate length;

[0022] 3), the steel pipe in step 2) is fixed on the pipe molding machine, and the steel pipe is rotated at a speed of 1200rpm;

[0023] 4), Centrifugal casting: Feed the mixture powder obtained in step 1) into the inner cavity of the steel pipe, and ignite it, generate high temperature to make each component in a molten state, and distribute evenly along the pipe wall, and centrifugal separation occurs at the same time, until the aluminum The complete reaction of the hot agent is completed; the thickness of the multi-...

Embodiment 3

[0026] The third production method of multi-metal wear-resistant steel pipe is characterized in that it comprises the following steps:

[0027] 1), mixing: take the following components by weight and mix evenly: 60% of copper-chromium alloy powder, 16% of iron oxide powder, 23.995% of aluminum powder, and 0.005% of nano-silicon carbide powder;

[0028] 2) Take a seamless steel pipe or a straight seam steel pipe with a wall thickness of 4mm for cutting and processing, and cut off an appropriate length;

[0029] 3), the steel pipe in step 2) is fixed on the pipe molding machine, and the steel pipe is rotated at a speed of 1300rpm;

[0030] 4), Centrifugal casting: Feed the mixture powder obtained in step 1) into the inner cavity of the steel pipe, and ignite it, generate high temperature to make each component in a molten state, and distribute evenly along the pipe wall, and centrifugal separation occurs at the same time, until the aluminum The complete reaction of the hot agen...

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Abstract

The invention discloses a method for producing a multi-metal wear-resistant steel pipe, and the method belongs to the technical field of production of tubes and pipes. The mixing of materials is firstly carried out: the following components by weight content are taken and evenly mixed: 58-61 percent of copper chrome alloy power, 16-18 percent of iron oxide powder, 22-24 percent of aluminium powder and 0.001-0.005 percent of nano-silicon carbide powder; then a seamless steel pipe or a straight seam steel pipe with the wall thickness of 3-5mm is further taken and cut into the appropriate length; then the steel pipe is fixed on a pipe molding machine to lead the steel pipe to rotate at the speed of 1000-1400rpm; the composition is further sent into an inner cavity for centrifugal casting, thereby leading the thickness of a multi-metal layer which is evenly distributed on the pipe wall to be 3-15mm; the rotation state of the steel pipe is continuously kept, and the steep pipe is removed after the curing of the inner wall of the steel pipe or the direct cooling to the room temperature. The method can line the thicker multi-metal layer in the thin-walled steel pipe, and the produced steel pipe has the advantages of great strength, good toughness and wear resistance.

Description

technical field [0001] The invention relates to a method for producing a pipe. Background technique [0002] The multi-metal wear-resistant steel pipe products in the prior art are manufactured by the self-propagating high-temperature synthetic centrifugal method. The high-temperature molten multi-metal liquid contacts the inner wall of the steel pipe, making the inner wall of the steel pipe in a semi-molten state. During this process, the pipe of the steel pipe The thinner the wall, the easier it is for the steel pipe to be burned through, and the inner multi-metal layer will also collapse or crack due to excessive stress between the steel pipe and the multi-metal, seriously affecting the quality of the product. Contents of the invention [0003] The object of the present invention is to provide a production method of a multi-metal wear-resistant steel pipe, which can be used to line a thicker multi-metal layer in a thin-walled steel pipe. [0004] The object of the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/02B22D19/16
Inventor 王伏成乐少兵
Owner YANGZHOU JUYE WEAR-RESISTANT COMPOSITE MATERIAL CO LTD
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