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Heat treatment process for precision stainless steel processing

A heat treatment, stainless steel technology, applied in the direction of heat treatment furnace, heat treatment equipment, heat treatment process control, etc., can solve the problems of insufficient smoothness of the plane, poor toughness of stainless steel, etc., and achieve the effect of protecting quality and novel structure

Active Publication Date: 2018-12-11
江苏贯森新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the heating process of stainless steel is too simple, the toughness of stainless steel is poor, and the plane is not smooth enough.

Method used

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Embodiment 1

[0019] 1. The present invention provides a kind of heat treatment process that is used for precision stainless steel machining, comprises following process steps:

[0020] Step 1: Billet preparation, stack the square billets according to the layers to form a square shape, check the surface quality of the billets at the same time, polish and clean the thicker oxide layer, and the square billets are all cold billets;

[0021] Step 2: heat treatment, place the billet in the furnace for heat treatment, the temperature of the preheating section is less than 800°C, the temperature of the high temperature section is 830-1280°C, the heating time is 120-180min, continuous annealing: transported by a crane to the continuous annealing unit Uncoiler, after uncoiling, the head of the strip steel is welded by a lap welding machine, and then enters the looper and continuous annealing furnace through the S roll, and then passes through the redirection roll and the looper, and the semi-finished...

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Abstract

The invention discloses a heat treatment process for precision stainless steel processing. The heat treatment process comprises the following process steps of blank preparation, heating treatment, primary shaping, primary cooling, grinding, secondary shaping, final shaping and controlled cooling; a hydraulic cylinder is arranged in a specially-made heating furnace, and during heating, a blank in the heating furnace is extruded by a hydraulic rod, so that the blank has a better plane and shape through extrusion, stainless steel is hammered by the hydraulic cylinder, the blank is continuously tightened, and the semi-formed stainless steel is put into a shaping furnace for heating; and the temperature of a high-temperature segment is 500-700 DEG C, and the heating time 30-40 min. The heat treatment process is novel in structure, the stainless steel is subjected to final shaping after primary shaping and secondary shaping in the heating process, and the blank is extruded through an extrusion plate in the shaping furnace for repeated shaping, so that the blank has certain toughness and plane neatness, the side surface of the stainless steel is super-flat, and the quality of the stainless steel is protected conveniently during heating under the protection of protective gas.

Description

technical field [0001] The invention relates to a heat treatment process for precision stainless steel processing, in particular to a heat treatment process for precision stainless steel processing. Background technique [0002] Stainless steel (Stainless Steel) is the abbreviation of stainless acid-resistant steel. The steel grades that are resistant to weak corrosive media such as air, steam, and water, or have stainless properties are called stainless steel; Corrosion) Corroded steel is called acid-resistant steel. The invention and use of stainless steel can be traced back to the First World War. British scientist Henry Brellley was commissioned by the British government's military arsenal to study the improvement of weapons. At that time, the barrels of rifles used by soldiers were extremely easy to wear and tear. Brellley wanted to invent an alloy steel that was not easy to wear. Stainless steel is often divided into martensitic steel, ferritic steel, austenitic steel...

Claims

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Application Information

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IPC IPC(8): C21D8/02C21D9/56C21D11/00
CPCC21D8/0205C21D8/0242C21D8/0247C21D9/56C21D11/00
Inventor 姜春静
Owner 江苏贯森新材料科技有限公司
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