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Method for manufacturing bimetal composite wear resistant tube through centrifugal molding double fluids

A technology of centrifugal casting and manufacturing method, which is applied in the field of double-liquid centrifugal casting to manufacture bimetal composite wear-resistant pipes. The effect of safety and long service life

Inactive Publication Date: 2006-04-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In metallurgy, mining, electric power, petroleum, construction, coal and other industries, materials are transported through pipelines under pressure, and the pipelines are subjected to high pressure and severe wear, which brings very large economic losses to related enterprises. Because the pipe made of a single material cannot obtain the harmony of various mechanical properties such as wear resistance-weldability-impact resistance, the overall performance is poor, and it cannot meet the actual application conditions. Materials with different physical properties must be compounded. , in order to reflect the highest performance of various components, and obtain pipeline products with good comprehensive performance
In the current centrifugal casting method for bimetallic composite wear-resistant pipes, since the prepared outer sleeve is directly put into the centrifuge mold tube in a cooled state, and then poured with wear-resistant alloy material, a large amount of heat from the wear-resistant alloy melt is absorbed by the outer sleeve. Tube absorption, therefore, greatly reduces the fluidity of the wear-resistant alloy melt, and the production of ultra-thin composite pipes below 10mm and ultra-long composite pipes above 3m cannot be realized, and the latent heat of crystallization of the wear-resistant alloy melt cannot make the inner surface of the outer casing The product is partially melted, metallurgical bonding cannot be achieved between the two layers of metal, and there are even gaps of a certain size, which poses certain safety issues in use

Method used

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  • Method for manufacturing bimetal composite wear resistant tube through centrifugal molding double fluids
  • Method for manufacturing bimetal composite wear resistant tube through centrifugal molding double fluids
  • Method for manufacturing bimetal composite wear resistant tube through centrifugal molding double fluids

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Embodiment 1

[0023] For the manufacturing method of bimetallic composite wear-resistant pipe by double-liquid centrifugal casting, see the process flow Figure 4 , the structural diagram of the composite wear-resistant pipe in the manufacturing process can be found in figure 1 , follow the steps below:

[0024] a) Paint preparation. Prepare water-based graphite coating according to the volume ratio of water and graphite powder is 1:0.3~1.0, the particle size of graphite powder is generally 10~100um;

[0025] b) The inner surface of the mold tube is sprayed. Spray the prepared water-based graphite paint evenly on the inner surface of the centrifuge mold tube 1, so that the bimetal composite wear-resistant tube can be pulled out from the centrifuge mold tube 1, and its thickness is 0.05-0.15mm;

[0026] c) The paint is dried and the mold tube is packaged. Dry the coating on the inner surface of the mold tube with a flame; and encapsulate the two ends of the centrifuge mold tube 1, and th...

Embodiment 2

[0031] Manufacture a bimetal composite wear-resistant straight pipe with an inner diameter of Φ133mm, a length of 6m, and a lining thickness of 5mm. See the process flow Figure 4 , the structural diagram of the composite wear-resistant pipe in the manufacturing process can be found in figure 1 , proceed as follows:

[0032] a) Paint preparation. According to the volume ratio of water and graphite powder is 1: 0.5 to prepare water-based graphite coating;

[0033] b) The inner surface of the mold tube is sprayed. Spray the prepared water-based graphite paint evenly on the inner surface of the centrifuge mold tube 1, with a thickness of about 0.1mm;

[0034] c) The paint is dried and the mold tube is packaged. drying the coating on the inner surface of the mold tube 1 with a flame; and encapsulating both ends of the centrifuge mold tube 1;

[0035] d) Fabrication of the outer casing. Melt steel smelting, melt A3 steel melt in the intermediate frequency furnace, measure ou...

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Abstract

A technology for manufacturing the antiwear bimetal tube by dual-liquid casting includes such steps as spraying graphite paint onto inner surface of a moulding pipe on centrifugal machine, baking, closing, high speed rotating while pouring molten steel, solidifying to become external steel tube, pouring molten antiwear alloy, solidifying, cooling and cleaning.

Description

technical field [0001] The invention relates to a method for manufacturing conveying pipes in metallurgy, mining, electric power, petroleum, construction, coal and other industries, in particular to a method for manufacturing bimetallic composite wear-resistant pipes by double-liquid centrifugal casting. Background technique [0002] In metallurgy, mining, electric power, petroleum, construction, coal and other industries, materials are transported through pipelines under pressure, and the pipelines are subjected to high pressure and severe wear, which brings very large economic losses to related enterprises. Because the pipe made of a single material cannot obtain the harmony of various mechanical properties such as wear resistance-weldability-impact resistance, the overall performance is poor, and it cannot meet the actual application conditions. Materials with different physical properties must be compounded. , in order to reflect the highest performance of various compon...

Claims

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Application Information

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IPC IPC(8): B22D13/02B22D19/16
Inventor 许云华岑启宏
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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