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A method for manufacturing high-silicon titanium-containing austenitic stainless steel tube blank

A technology of austenitic stainless steel and its manufacturing method, which is applied in the field of manufacturing high-silicon and titanium-containing austenitic stainless steel tube blanks

Active Publication Date: 2020-05-19
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing conventional austenitic stainless steel smelting and forging processes cannot meet these requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] Embodiment 1: Manufacture and inspection of high-silicon and titanium-containing austenitic stainless steel tube blank (1)

[0108] The diameter of the cladding tube blank prepared in this embodiment is 204mm, and the length is 5000mm (the weight percentage of the finished product is composed as follows: C: 0.62%, Si: 0.83%, P: 0.008%, S: 0.0010%, Mn: 1.56%, Ni : 14.92%, Cr: 16.17%, Mo: 2.11%, Ti: 0.45%, Co: <0.01%, B: 0.004%, N: 0.0050%, V: 0.19%, O: ≤0.0008%, Cu: ≤0.01 %, Al: ≤0.03%, As: <0.003%, Mg<0.002%, Ca<0.005%, and the rest is Fe), including the following steps.

[0109] 1. High-silicon titanium-containing austenitic stainless steel (code CN-1515) batching vacuum induction furnace smelting

[0110] (1) Use a 6-ton vacuum induction furnace for smelting, and vacuumize the smelting chamber to ≤ 1.0Pa when the furnace is empty;

[0111] (2) Furnace loading of raw materials;

[0112] (3) Refining after power transmission and melting to chemical purification, the ...

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Abstract

The invention belongs to the technical field of metallurgical materials, and relates to a method for manufacturing a high-silicon-titanium-containing austenitic stainless steel tube blank. The manufacturing method comprises the following steps in turn: (1) vacuum induction furnace smelting of high-silicon-titanium-containing austenitic stainless steel ingredients; And precision forging machine forging, fast forging machine forging successively performs forging clamp process, pre-deformation process, homogenization heat treatment process, fast forging process, cutting process; precision forging machine forging successively performs heat preservation process and precision forging process. Utilizing the manufacturing method of the high-silicon titanium-containing austenitic stainless steel tube blank of the present invention, the manufactured tube blank can meet the requirements of fast reactor core cladding material on the content of harmful elements O and S, the level of inclusions and the uniform structure of the tube blank. demands for sexual control.

Description

technical field [0001] The invention belongs to the technical field of metallurgical materials, and relates to a method for manufacturing a high-silicon-titanium-containing austenitic stainless steel tube blank. Background technique [0002] Fast neutron reactor (hereinafter referred to as fast reactor) is a fourth-generation nuclear energy system. Compared with previous reactors, its core components, especially fuel components, must achieve higher burnup at higher temperatures. The fuel rods in the components Integrity is strongly dependent on whether the cladding material can withstand high-dose radiation (above 100dpa) at high temperatures (350-700°C). Therefore, for fast reactor fuel assembly cladding materials, the main performance requirements include: good radiation resistance, especially good radiation swelling resistance; good high temperature mechanical properties; good compatibility with fuel and coolant; Capacitance. [0003] Austenitic stainless steel is widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/00C21D1/00C21D6/00C21D8/10C21D9/08C22B9/04C22B9/16C22C33/04C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50C22C38/52C22C38/54C22C38/58B21J1/04
CPCB21J1/003B21J1/04C21C7/0006C21D1/00C21D6/004C21D6/005C21D6/007C21D6/008C21D8/105C21D9/08C22B9/04C22B9/16C22C33/04C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50C22C38/52C22C38/54C22C38/58Y02P10/25
Inventor 杜爱兵冯伟任媛媛李峻宏苏喜平王明政黄晨杨孔雳杨红义张东辉梁田张龙高明刘奎
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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