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Austenitic stainless steel welding wire for high-level waste vitrified body container and its preparation method and application

A technology of austenitic stainless steel and glass solidification, applied in welding equipment, manufacturing tools, welding media, etc., can solve problems such as the inability to meet the welding requirements of containers, and achieve the effect of less defects, cost saving and good process performance

Active Publication Date: 2021-01-19
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ordinary 310s stainless steel welding consumables cannot meet the welding requirements of this container, and its high-temperature mechanical properties need to be further improved

Method used

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  • Austenitic stainless steel welding wire for high-level waste vitrified body container and its preparation method and application
  • Austenitic stainless steel welding wire for high-level waste vitrified body container and its preparation method and application
  • Austenitic stainless steel welding wire for high-level waste vitrified body container and its preparation method and application

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Embodiment Construction

[0021] In a specific embodiment, in the preparation method of the high-temperature-resistant and toughened austenitic stainless steel welding wire for glass solidified containers of the present invention, the master alloy steel ingot prepared by vacuum melting is forged into a billet after being kept at 1150°C for 2 hours; the forged After the billet is kept at 1150°C for 1.5h, it is hot rolled into a Φ6mm wire rod; the wire rod is made into a Φ1.2mm welding wire after continuous cold drawing (intermediate hydrogen charging annealing), and its tensile strength is between 1300 and 1500MPa. In terms of weight percentage, the chemical composition of the austenitic stainless steel welding wire is as follows:

[0022] C: 0.04-0.12%, Cr: 24.0-26.0%, Ni: 19.0-21.0%, Mn: ≤2.0%, Si: ≤1.0%, Nb: 0.3-1.0%, S: <0.001%, P: <0.008 %, O≤0.004%, H≤2ppm, N≤0.1%, Ca: <0.005%, Mg: <0.005%, Ta: <0.02%, Cu: <0.02%, Co: <0.02%, Fe balance.

[0023] During use, the base material is made of 310s stai...

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Abstract

The invention discloses an austenitic stainless steel welding wire for a high-level waste glass solidified body container and a preparation method and application of the austenitic stainless steel welding wire, and belongs to the technical field of welding materials. The elementary chemical components of the austenitic stainless steel welding wire are composed of, by weight, 0.04-0.12% of C, 24.0-26.0% of Cr, 19.0-21.0% of Ni, less than or equal to 2.0% of Mn, less than or equal to 1.0% of Si, 0.3-1.0% of Nb, less than or equal to 0.1% of N and the balance Fe. The preparation process of the welding wire comprises the steps that a mother alloy steel ingot is prepared by adopting vacuum melting and forged to be a square billet after being subjected to heat preservation for 1-3 h at the temperature of 1100-1200 DEG C; the square billet is subjected to hot continuous rolling to be a steel wire rod after being subjected to heat preservation for 1-2 h at the temperature of 1100-1150 DEG C; and finally, the steel wire rod is manufactured into the welding wire after being subjected to continuous cold drawing. The welding wire is used for welding of the high-level waste glass solidified body container, the requirement for the product container material performance can be met, and the welding wire has good high-temperature strength and good impact toughness.

Description

technical field [0001] The invention relates to the technical field of welding materials, in particular to an austenitic stainless steel welding wire for high-level waste vitrification containers, a preparation method and application thereof. Background technique [0002] Due to the increasing contradiction between energy utilization and environmental protection, nuclear energy, as a green and clean energy, is gradually replacing fossil energy and has become an important part of the power source in the world today. It is an important development direction for my country's new energy structure adjustment. However, while the development and utilization of nuclear energy brings huge social and economic benefits, it will also produce a large amount of radioactive waste, which will seriously damage the human living environment if it is not disposed of properly. These wastes contain nuclides with strong radioactivity, high calorific value, high toxicity and long half-life, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
Inventor 陆善平张旭李殿中李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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