Method for obtaining transient liquid phase diffusion bonding of RAFM reliable joint

A technology of diffusion connection and instantaneous liquid phase, which is applied in the direction of welding/welding/cutting items, welding equipment, non-electric welding equipment, etc. It can solve the problems of high surface roughness of the workpiece connection surface, large residual stress of the joint, deformation of the workpiece, etc., to achieve The effect of small pressure, short connection time, and small deformation of the workpiece
CN112388142AActive Publication Date: 2021-02-23TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2021-02-23

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Abstract

The invention discloses a method for obtaining transient liquid phase diffusion bonding of a RAFM reliable joint. The method comprises the steps that transient liquid phase diffusion bonding is carried out on a RAFM sample using an iron-based alloy foil Fe-Si-B, the temperature is increased to 800-900 DEG C at the heating rate of 5-20 DEG C / min, the temperature is kept 20-40 minutes, then the temperature is increased to 1185-1215 DEG C at the heating rate of 5-20 DEG C / min, 0.2-2 MPa pressure is applied in the direction perpendicular to a to-be-connected face, the temperature is kept 1-60 minutes, and finally, the temperature is reduced to the room temperature of 20-25 DEG C at the cooling rate of 5-30 DEG C / min. According to the method for obtaining transient liquid phase diffusion bonding of the RAFM reliable joint, an alloy foil intermediate layer is utilized and a thermal cycle process of transient liquid phase diffusion bonding is designed, so that the RAFM reliable joint with uniform structure and good mechanical properties is obtained.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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