Method for reducing residual stress of stainless steel power distribution cabinet processing material

A technology for processing materials and residual stress, applied in the direction of improving process efficiency, etc., can solve the problems of affecting the dimensional stability of components, reducing the mechanical properties of power distribution cabinets, and affecting fatigue life, etc. The effect of improving toughness and improving overall performance

Active Publication Date: 2021-01-22
中泽电气科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when stainless steel is processed to prepare power distribution cabinets, it will cause different degrees of residual stress, which will further affect the dimensional stability of components, cause problems such as deformation and cracks, reduce the mechanical properties of power distribution cabinets and affect their fatigue life

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for reducing the residual stress of processed materials for stainless steel power distribution cabinets, comprising: melting the processed stainless steel materials in a vacuum induction furnace, pouring them into ingots, performing alloy forging, heating at 1190°C, and holding for 100 minutes to obtain a green body, which will be prepared The obtained titanium-based composite powder is evenly coated on the surface of the green body, and then hot-rolled. Inject nitrogen, the flow rate of nitrogen gas is 60 cubic meters per hour, and the surface of the hot-rolled steel plate is quickly cleaned with concentrated hydrochloric acid with a concentration of 8.2 mol / liter at 20°C for 40 seconds, and then rinsed twice with clean water. Finally, put the steel plate in a preheated vacuum furnace at 600°C, raise the temperature to 1030°C at a rate of 7°C / min, keep it warm for 22 minutes, carry out stress relief, and carry out cold rolling after coming out of the furnace. ...

Embodiment 2

[0021] A method for reducing the residual stress of processed materials for stainless steel power distribution cabinets, comprising: melting the processed stainless steel materials in a vacuum induction furnace, pouring them into ingots, performing alloy forging, heating at 1200°C, and holding the heat for 110 minutes to obtain a green body, which will be prepared The obtained titanium-based composite powder is evenly coated on the surface of the green body, and then hot-rolled. Inject nitrogen, the flow rate of nitrogen gas is 62 cubic meters per hour, and the surface of the hot-rolled steel plate is quickly cleaned with concentrated hydrochloric acid with a concentration of 8.4 mol / liter at 22 °C for 42 seconds, and then rinsed twice with clean water. Finally, place the steel plate in a preheated vacuum furnace at 630°C, raise the temperature to 1040°C at a rate of 7.5°C / min, keep it warm for 24 minutes, and perform stress relief. The plate with the required thickness is obt...

Embodiment 3

[0028] A method for reducing the residual stress of processed materials for stainless steel power distribution cabinets, comprising: melting the processed stainless steel materials in a vacuum induction furnace, pouring them into ingots, performing alloy forging, heating at 1220°C, and holding for 120 minutes to obtain a green body, which will be prepared The obtained titanium-based composite powder is evenly coated on the surface of the green body, and then hot-rolled. Inject nitrogen, the flow rate of nitrogen is 65 cubic meters per hour, and the surface of the hot-rolled steel plate is quickly cleaned with concentrated hydrochloric acid with a concentration of 8.6 mol / liter at 25 °C for 45 seconds, and then rinsed with water for 3 times. Finally, place the steel plate in a preheated vacuum furnace at 660°C, raise the temperature to 1050°C at a rate of 8°C / min, keep it warm for 26 minutes, and perform stress relief. The plate with the required thickness is obtained, placed i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of new material processing, and discloses a method for reducing residual stress of a stainless steel power distribution cabinet processing material. The method is beneficial to combination between molten metal crystal interfaces at high temperature and reduction of plastic deformation capacity of a stainless steel cast ingot by adjusting niobium elementcontent to a range of 0.8-1.2%. The surface of a green body is evenly coated with prepared titanium-based composite powder, then hot rolling is conducted, the sensitivity of nickel, silicon, copper and other elements to stress is reduced, when a steel plate material obtained through cold rolling and heat treatment is further used for power distribution cabinet machining, the welding performance is good, stress corrosion and hot cracks are not likely to happen to a welding joint, the steel plate material has lower residual stress and higher mechanical strength, the problems of cracks and intergranular corrosion tendency are solved, the strength and the toughness of stainless steel are remarkably improved, an obtained stainless steel plate has lower residual stress, the hardness, the tensile strength and the elongation of the stainless steel are remarkably improved, and the corrosion resistance is high.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for reducing the residual stress of processing materials of stainless steel distribution cabinets. 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 qua...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/02C22C38/42C22C38/48C21D8/02C21D1/773C21D1/30B21C37/02
CPCC22C38/58C22C38/02C22C38/42C22C38/48C22C38/008C22C38/002C22C38/001C21D8/0226C21D8/0205C21D8/0278C21D8/0236C21D8/0247C21D1/773C21D1/30B21C37/02Y02P10/20
Inventor 张祖生梁晶晶
Owner 中泽电气科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap