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Preparation process of high-strength and high-toughness 316LF stainless steel

A preparation process and technology of stainless steel, which is applied in the field of preparation technology of high-strength and high-toughness 316LF stainless steel, can solve the problems of increasing the cost of input, material clogging of hoppers, affecting processing efficiency, etc. The effect of improving processing efficiency

Inactive Publication Date: 2021-08-06
JIANGSU SHENYUAN SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of 316LF stainless steel processing, the electric arc furnace used still has the situation that the material clogs the hopper during the feeding process, which affects the processing efficiency, requires manual coordination, is time-consuming and laborious, increases the cost input, and brings about device defects. question

Method used

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  • Preparation process of high-strength and high-toughness 316LF stainless steel
  • Preparation process of high-strength and high-toughness 316LF stainless steel
  • Preparation process of high-strength and high-toughness 316LF stainless steel

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Embodiment 1

[0031] The invention provides a technical solution: a preparation process of high-strength and high-toughness 316LF stainless steel. The preparation process of the 316LF stainless steel includes the following preparation steps: electric arc furnace plus intermediate frequency furnace-AOD furnace-continuous casting-rolling bar-inspection- wrap up and store;

[0032] Among them, the inspection includes the following procedures: surface and size inspection - ultrasonic inspection;

[0033] Electric arc furnace plus intermediate frequency furnace process, metal iron is placed in the electric arc furnace 1, the temperature in the furnace is 1600-1800 ℃, after melting, the blast furnace molten iron is obtained, and the alloy is put into the intermediate frequency furnace, and the temperature in the furnace is 1600-1750 ℃ , to obtain alloy solution;

[0034] In the AOD furnace process, the blast furnace molten iron and alloy solution are injected into the AOD furnace through the lad...

Embodiment 2

[0041] see figure 1 and figure 2, in this embodiment, the top surface of the electric arc furnace 1 is fixedly connected with a fixed plate 2, the top side wall of the fixed plate 2 is fixed with a guide column 3, and the other end of the guide column 3 is fixedly connected with the top surface of the electric arc furnace 1, and The side wall of the guide column 3 is slidingly sleeved with a guide sleeve 4, and an electric push rod-5 is installed on the top surface of the guide sleeve 4, and the other end of the electric push rod-5 is affixed to the inner top surface of the fixed plate 2, and A connecting block 6 is fixedly connected to the side wall of the guide sleeve 4, and a spring 7 is installed on the bottom surface of the connecting block 6. There are two plates 2 and two guide sleeves 4 respectively, the two fixed plates 2 and the guide sleeves 4 are arranged symmetrically with respect to the hopper 10, and the cross section of the connecting block 6 is arranged in a...

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Abstract

The invention discloses a preparation process of high-strength and high-toughness 316LF stainless steel and belongs to the technical field of metal processing. The preparation process of the 316LF stainless steel comprises the following preparation procedures of a procedure in an electric arc furnace and an intermediate frequency furnace, a procedure in an AOD furnace, continuous casting, bar rolling, inspection, packaging and warehousing. According to the process, blockage of a hopper can be avoided, the machining efficiency is improved,manual cooperative operation is not needed, time and labor are saved, cost input is reduced, the 316LF stainless steel has the advantages of austenite and ferritic stainless steel, compared with ferrite, the 316LF stainless steel is higher in plasticity and toughness, free of room-temperature brittleness and remarkably improved in intergranular corrosion resistance and welding performance, and compared with austenitic stainless steel, the 316LF stainless steel has high strength, obvious improvement in intergranular corrosion resistance and chloride stress corrosion resistance, higher yield and good surface quality, and meanwhile can inhibit the formation of subsurface bubbles in a casting blank and improve the generation of short cracks on the surface.

Description

technical field [0001] The invention relates to the technical field of metal processing, in particular to a preparation process of high-strength and high-toughness 316LF stainless steel. Background technique [0002] Stainless steel is the abbreviation of stainless acid-resistant steel. It is resistant to weak corrosive media, such as: air, steam and water. At the same time, the steel type with stainless property is also called stainless steel, and the steel type that is resistant to chemical corrosion medium corrosion is called acid-resistant steel. , and an electric arc furnace is required to produce 316LF stainless steel. [0003] During the processing of 316LF stainless steel, the electric arc furnace used in the feeding process still has the situation that the material clogs the hopper, which affects the processing efficiency, requires manual coordination, is time-consuming and laborious, increases the cost input, and brings about device defects. question. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/44C22C38/02C21D8/06C21C5/52
CPCC22C38/58C22C38/44C22C38/02C21D8/065C21C5/005Y02P10/20
Inventor 赵衡张国付曹俊华薛卫兵
Owner JIANGSU SHENYUAN SPECIAL STEEL