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Novel silicon carbide two-layer wear-resistant steel pipe

A technology of wear-resistant steel pipe and silicon carbide, which is applied in the field of wear-resistant bent pipe, can solve the problems of low cost and poor wear resistance, and achieve the effect of moderate cost, stable geometric size and high hardness

Inactive Publication Date: 2016-01-27
JIANGSU SANNAI SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] High-temperature wear-resistant composite pipe (tortoise shell net), the process is to weld a layer of tortoise shell net inside the formed A3 steel pipe bend. This product has a low cost because the inner lining has not been sintered, but its wear resistance is relatively poor.

Method used

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  • Novel silicon carbide two-layer wear-resistant steel pipe

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Embodiment 1

[0019] A new type of silicon carbide double-layer wear-resistant steel pipe, including an outer shell layer 1, an inner lining layer 3 and a filling layer 2. The filling layer is the gap between the outer shell layer 1 and the inner lining layer 3. First, the sintered silicon carbide is processed into a cylinder Shaped inner lining layer, the outer shell layer is processed by A3 steel pipe, the shape is the same as the inner lining layer, the inner diameter of the outer shell layer is slightly larger than the outer diameter of the inner lining layer, and the sintered silicon carbide cylinder is placed on the processed A3 steel pipe bend Inside the tube, the gaps are filled with wear-resistant ceramic powder to form a filling layer, and the surface hardness of silicon carbide lining is 90 HRC.

Embodiment 2

[0021] A new type of silicon carbide double-layer wear-resistant steel pipe, including an outer shell layer 1, an inner lining layer 3 and a filling layer 2. The filling layer is the gap between the outer shell layer 1 and the inner lining layer 3. First, the sintered silicon carbide is processed into a cylinder Shaped inner lining layer, the outer shell layer is processed by A3 steel pipe, the shape is the same as the inner lining layer, the inner diameter of the outer shell layer is slightly larger than the outer diameter of the inner lining layer, and the sintered silicon carbide cylinder is placed on the processed A3 steel pipe bend Inside the pipe, the gaps are filled with wear-resistant ceramic cement to form a filling layer, and the surface hardness of silicon carbide lining is 80 HRC.

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Abstract

The present invention discloses a novel silicon carbide two-layer wear-resistant steel pipe, which comprises a housing layer and a lining layer, wherein the housing layer is made from stainless steel, the lining layer is formed by sintering silicon carbide, and the gap between the housing layer and the lining layer is filled with wear-resistant ceramic powder or wear-resistant ceramic glue mud. According to the present invention, the novel silicon carbide two-layer wear-resistant steel pipe produced through the process has characteristics of smooth internal and external, simple process, easy production, high hardness, light weight, moderate cost, wear resistance, corrosion resistance, compression resistance, lining hardness HRC of more than or equal to 80, and service life of more than 15 years.

Description

technical field [0001] The invention relates to a wear-resistant elbow, in particular to a novel silicon carbide double-layer wear-resistant steel pipe. Background technique [0002] The delivery pipeline is composed of straight pipes and bent pipes with different angles. When the high-speed moving air flow entraining solid molecules flows through the elbow, the solid particles will cause erosion and wear on the outer wall of the elbow due to the centrifugal force. This concentration effect and angle effect have a greater wear rate on the outer wall of the elbow. The wear rate of the pipe wall at the straight pipe part is very high, and the wear of the outer pipe wall at the outlet end of the elbow is the most serious. [0003] At present, the more mature and commonly used elbows at home and abroad include 1. Rare earth wear-resistant steel (single metal); 2. Bimetal composite pipe (lined with high chromium cast iron); 3. Ceramic patch composite pipe; 4. High temperature W...

Claims

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Application Information

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IPC IPC(8): B32B1/08B32B9/04B32B15/04B32B15/18
Inventor 丁纪章
Owner JIANGSU SANNAI SPECIAL STEEL
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