A method of instantaneous liquid phase diffusion bonding for reliable joints of rafm steel

A diffusion connection, instantaneous liquid phase technology, applied in welding/welding/cutting items, welding equipment, manufacturing tools, etc., can solve the problems of large residual stress of joints, workpiece deformation, and high surface roughness of the workpiece connection surface, and achieve the connection time. Short, small deformation of workpiece, low pressure effect
CN112388142BActive Publication Date: 2022-04-29TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2022-04-29

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Abstract

The invention discloses a method for obtaining instantaneous liquid-phase diffusion connection of reliable joints of RAFM steel, using iron-based alloy foil Fe-Si-B to perform instantaneous liquid-phase diffusion connection of RAFM steel samples, with a temperature rise of 5-20°C / min Raise the temperature to 800‑900°C, keep it warm for 20‑40min, then raise the temperature to 1185‑1215°C at a rate of 5‑20°C / min, apply a pressure of 0.2‑2MPa in the direction perpendicular to the surface to be connected, and keep it warm for 1‑ 60min, and finally lowered to room temperature 20-25°C at a cooling rate of 5-30°C / min. The invention utilizes the middle layer of the alloy foil and designs a thermal cycle process for instantaneous liquid phase diffusion connection, thereby obtaining a reliable joint of RAFM steel with uniform structure and good mechanical properties.
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Description

technical field

[0001] The invention belongs to a metal material welding technology, and more specifically relates to a method for obtaining instant liquid phase diffusion connection of reliable joints of RAFM steel. Background technique

[0002] With the rapid development of economy and society, human energy consumption is increasing day by day. The traditional non-renewable energy is gradually exhausted, so the development and utilization of renewable energy is imminent. As a kind of clean energy, nuclear energy has the advantages of good environmental compatibility, zero carbon emission, and cost-effectiveness. It is the trend of future energy development. Therefore, the continuous development of clean nuclear energy puts forward higher requirements for the safe, reliable and efficient operation of nuclear reactors. Due to the special environment in nuclear reactors, reactor structural materials need to withstand higher radiation doses, more complex corrosion environmen...

Claims

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