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High-hardness stainless steel power distribution cabinet

A technology of stainless steel and power distribution cabinet, applied in the direction of substation/distribution device casing, etc., can solve the problems of mechanical properties such as hardness decrease, stainless steel performance decrease, bonding strength decrease, etc., and achieve mechanical properties such as hardness and strength improvement, strength and The effect of improving toughness and overall performance

Active Publication Date: 2021-02-26
中泽电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of manufacturing stainless steel clad plates, due to the increase in the structural area and the decrease in bonding strength, the mechanical properties such as hardness decrease. The existing improvement methods are to increase the density of the green body or increase the sintering temperature to accelerate the densification process. The hardness of the material, however, due to the pollution of elements and improper sintering, the performance of stainless steel is easily reduced, and quality defects such as pores appear in the interior

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A high-hardness stainless steel power distribution cabinet. The processing technology is as follows: the stainless steel preparation material is smelted in an induction furnace, and the content of each element of the stainless steel is as follows in terms of mass percentage: chromium accounts for 16.2%; nickel accounts for 10.7%; carbon accounts for 0.021%; silicon 0.48% Manganese 1.55% Molybdenum 0.3% Copper 0.014% Tin 0.03% Zinc 0.06% Nitrogen 0.13% Phosphorus 0.0020% Sulfur 0.004% The remainder iron and unavoidable impurities; after being smelted in a vacuum induction furnace, the green body is obtained by casting, and the prepared NiAl element powder is evenly coated on the surface of the green body, and then sintered. The sintering temperature is 1340 ° C, and the sintering time is 45 minutes. Inject a mixed gas of nitrogen and hydrogen, wherein the flow rate of nitrogen gas is 80 cubic meters per hour, and the flow rate of hydrogen gas is 33 cubic meters per hour. ...

Embodiment 2

[0018] A high-hardness stainless steel power distribution cabinet. The processing technology is as follows: the stainless steel preparation material is smelted in an induction furnace, and the content of each element of the stainless steel is as follows in terms of mass percentage: chromium accounts for 16.4%; nickel accounts for 10.9%; carbon accounts for 0.022%; silicon 0.49%; manganese 1.80%; molybdenum 0.35%; copper 0.015%; tin 0.04%; zinc 0.08%; nitrogen 0.15%; phosphorus 0.0022%; sulfur 0.006%; the rest is iron and unavoidable impurities; after being smelted in a vacuum induction furnace, the green body is obtained by casting, and the prepared NiAl element powder is evenly coated on the surface of the green body, and then sintered. The sintering temperature is 1360 ° C, and the sintering time is 50 minutes. Inject a mixed gas of nitrogen and hydrogen, wherein the flow rate of nitrogen gas is 82 cubic meters per hour, and the flow rate of hydrogen gas is 36 cubic meters pe...

Embodiment 3

[0023] A high-hardness stainless steel power distribution cabinet. The processing technology is as follows: the stainless steel preparation material is smelted in an induction furnace, and the content of each element of the stainless steel is as follows in terms of mass percentage: chromium accounts for 16.6%; nickel accounts for 11.3%; carbon accounts for 0.023%; silicon 0.50% Manganese 1.85% Molybdenum 0.4% Copper 0.016% Tin 0.05% Zinc 0.09% Nitrogen 0.17% Phosphorus 0.0024% Sulfur 0.008% The remainder iron and unavoidable impurities; after being smelted in a vacuum induction furnace, the green body is obtained by casting, and the prepared NiAl element powder is evenly coated on the surface of the green body, and then sintered. The sintering temperature is 1380 ° C, and the sintering time is 55 minutes. Inject a mixed gas of nitrogen and hydrogen, wherein the flow rate of nitrogen gas is 85 cubic meters per hour, and the flow rate of hydrogen gas is 40 cubic meters per hour. ...

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PUM

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Abstract

The invention relates to the technical field of new material processing, and discloses a high-hardness stainless steel power distribution cabinet. Excessive expansion of a sintered body in the sintering process can be prevented. The content of the Mo element is adjusted to be within the range of 0.3-0.4%, after smelting is conducted through a vacuum induction furnace, pouring is conducted, and a green body is obtained; the surface of the green body is evenly covered with prepared NiAl element powder, sintering is conducted, and the adding amount of the added NiAl element powder is 0.02-0.03% of the mass of the green body; the strength and toughness of stainless steel are remarkably improved, the stainless steel is further pressed into a material, the heat treatment performance is good, andthe mechanical properties such as the pressing forming performance and hardness of the stainless steel are improved; compared with high-temperature rapid sintering, the mechanical properties such asthe hardness and the strength are remarkably improved, an obtained stainless steel composite plate has the low porosity, a stable passive film is formed on the surface, and the corrosion resistance ishigh; and the problem of local structure roughing existing in the sintering process of the stainless steel is further solved, and the comprehensive performance of a stainless steel power distributioncabinet processing material is improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a high-hardness stainless steel distribution cabinet. Background technique [0002] The power distribution cabinet is an important device in the power system and the final equipment of the power distribution system. The power distribution cabinet is the general name of the motor control center. In the case of concentrated loads and many circuits, they distribute the electric energy of a certain circuit of the upper-level power distribution equipment to the nearby loads. This level of equipment should provide protection, monitoring and control for the load. The power distribution cabinet is particularly important for the power system, so The safety of the power distribution cabinet is the focus of power distribution equipment. [0003] The existing plastic power distribution cabinets are of poor quality, their mechanical properties are not strong enoug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/08B22F3/02B22F3/10B22F3/18B22F9/04C22C38/02C22C38/42C22C38/44C22C38/58C23G1/08H02B1/30
CPCB22F7/08B22F3/1007B22F3/02B22F3/18C23G1/08C22C38/02C22C38/58C22C38/44C22C38/42C22C38/008C22C38/002C22C38/001B22F9/04H02B1/30B22F2009/043
Inventor 张祖生梁晶晶
Owner 中泽电气科技有限公司
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