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Manufacturing method of high silicon titaniferous austenitic stainless steel cladding pipe

A technology of austenitic stainless steel and manufacturing method, which is applied in the field of manufacturing high-silicon-titanium-containing austenitic stainless steel cladding tubes, and can solve problems such as unsatisfactory manufacturing processes

Inactive Publication Date: 2018-12-18
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the high requirements for hot extrusion, cold rolling, heat treatment and ultrasonic flaw detection process of high-silicon and titanium-containing austenitic stainless steel cladding tubes, the existing conventional austenitic stainless steel tube manufacturing processes cannot meet these requirements

Method used

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  • Manufacturing method of high silicon titaniferous austenitic stainless steel cladding pipe
  • Manufacturing method of high silicon titaniferous austenitic stainless steel cladding pipe

Examples

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Embodiment 1

[0071] Example 1: Manufacture and inspection of cladding tube made of high-silicon and titanium-containing austenitic stainless steel (1)

[0072] The size of the cladding tube prepared in this embodiment is Φ6.6×0.45mm (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% , A1: ≤0.03%, As: <0.003%, Mg<0.002%, Ca<0.005%, and the rest is Fe), including the following steps.

[0073] (1) Smelting

[0074] A 6-ton vacuum induction furnace is used for vacuum induction smelting of high-silicon-titanium-containing austenitic stainless steel (codenamed CN-1515), and a vacuum consumable furnace is used for consumable remelting. The chemical composition of the finished consumable ingot meets the chemical composition requirements.

[0075] (2) forging

[0076] The fast forging machine and precision fo...

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Abstract

The invention belongs to the technical field of metallurgical materials, and relates to a manufacturing method of a high silicon titaniferous austenitic stainless steel cladding pipe. The manufacturing method successively includes the following steps of (1), smelting, (2) forging, (3) hot extrusion, (4) intermediate cold rolling and intermediate heat treatment, (5) final heat treatment, and (6) final cold rolling. According to the manufacturing method of the high silicon titaniferous austenitic stainless steel cladding pipe, the manufactured cladding pipe can meet strict requirements of alloycomposition, microstructure uniformity, dimensional accuracy and surface quality and other aspects.

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 cladding tube. 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 The integrity strongly depends on whether the cladding tube can withstand the influence of high-dose radiation (above 100dpa) at high temperature (350-700°C). Therefore, for the fast reactor core assembly cladding tube, the main performance requirements include: good radiation resistance, especially good radiation swelling resistance; good high temperature mechanical properties; good compatibility with fuel and coolant Compatibility; extremely strict dimensional ac...

Claims

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Application Information

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IPC IPC(8): B21C37/06
CPCB21C37/06
Inventor 冯伟杜爱兵任媛媛李峻宏苏喜平王明政黄晨杨孔雳杨红义张东辉
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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