An Electron Beam Welding Process Suitable for Martensitic Steel High-Density Runner Package Forming

An electron beam welding and martensitic steel technology, applied in electron beam welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of low activation martensitic steel with high density, etc. Beautifully formed, the effect of improving heat exchange efficiency

Active Publication Date: 2016-08-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide an electron beam welding process suitable for the packaging and molding of high-density flow channels of martensitic steel, so as to solve the welding problem of high-density and narrow-spaced flow channel packaging of low-activation martensitic steel

Method used

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  • An Electron Beam Welding Process Suitable for Martensitic Steel High-Density Runner Package Forming
  • An Electron Beam Welding Process Suitable for Martensitic Steel High-Density Runner Package Forming
  • An Electron Beam Welding Process Suitable for Martensitic Steel High-Density Runner Package Forming

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Experimental program
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Embodiment 1

[0030] Example 1, taking the encapsulation and welding of the high-density and narrow-space flow channels of the cooling plate cladding of the fusion reactor China liquid lead-lithium experiment as an example, the cross-section is as follows figure 1 As shown, the structural material is Chinese low-activation martensitic (CLAM) steel;

[0031] (1) if figure 1 As shown, the cross-sectional dimensions of the high-density flow channel of the cooling partition are: width a=8mm, height b=4mm, and flow channel spacing c=3mm. according to figure 1 The dimensions of the flow channel seal and the assembly seam shown are designed as follows: seam depth h=1.2mm, width f=0.3mm, seal thickness e=1.4mm, and assembly gap g less than 0.2mm.

[0032] (2) Parts demagnetization treatment: use a planar AC demagnetizer to demagnetize the parts, the remanence rate of the parts after demagnetization measured by a Gauss meter is less than 3Gs, ultrasonic cleaning and acetone scrubbing.

[0033] (3...

Embodiment 2

[0037] Example 2, taking the fusion reactor Chinese liquid lead-lithium cladding as an example, the packaging and welding of the radial-polar separator with high density and narrow interval flow channels, the cross-section is as follows Figure 4As shown, the structural material is Chinese low-activation martensitic (CLAM) steel, and the preparation steps are as follows:

[0038] (1) Figure 4 It is a radial-polar partition flow channel structure; the cross-sectional dimensions of the flow channel are: width a=9mm, height b=4mm, and flow channel spacing c=3mm. according to figure 1 The dimensions of the flow channel seal and the assembly seam shown are designed as follows: seam depth h=1.4mm, width f=0.3mm, seal thickness e=1.5mm, and assembly gap g less than 0.2mm. The thickness of the substrate is 10mm, and channel steel anti-deformation restraint tooling is used in the process of processing and welding.

[0039] (2) Parts demagnetization treatment: use a planar AC demagn...

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Abstract

The invention discloses an electron beam welding process suitable for encapsulation molding of a martensitic steel high-density runner. The process comprises such steps as size design of a runner seal and an assembly lockrand, demagnetization and cleaning of parts, weld preheating, electron beam welding of the seal, excess weld metal processing of the seal and annealing heat treatment. The electron beam welding process suitable for encapsulation molding of a cooling part runner of the martensitic steel high-density runner has such advantages as good runner molding, no such defects as air holes and cold / hot cracks and small welding deformation, solves the problems of easy cracking of an encapsulation welding line and big welding deformation of the martensitic steel high-density runner, and can be suitable for encapsulation molding of low-activation martensitic steel high-density and narrow-gap runners.

Description

technical field [0001] The invention relates to an electron beam welding process suitable for the encapsulation and molding of high-density flow channels of martensitic steel, especially the encapsulation and welding of high-density flow channels of low-activation martensitic steel cooling parts, which can be used for high-efficiency heat exchange of fusion reactor cladding Electron beam encapsulation and welding of high-density and narrow-space flow channel forming for cooling components. Background technique [0002] Low-activation martensitic steel has excellent thermophysical properties, radiation swelling resistance, liquid metal corrosion resistance, etc., and has been selected as the main structural material for the fusion reactor cladding, and is also the main candidate for the cladding of the fusion engineering demonstration reactor in the future. Structural materials. Due to the large tendency of martensite hardening and cold cracking in martensitic steel, its wel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/00
CPCB23K15/0033B23K15/0053B23K15/06B23K2103/04
Inventor 翟玉涛黄群英李春京黄波张俊钰
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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