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High-strength electron beam welding process of titanium metal material and copper or copper alloy

A technology of electron beam welding and titanium metal, which is applied in the welding process of titanium metal materials and copper or copper alloys, and in the field of high-strength electron beam welding technology of titanium metal materials and copper or copper alloys, which can solve the problems of low joint strength and poor plasticity , to achieve smooth welds, improve strength and plasticity, and eliminate brittle compounds

Inactive Publication Date: 2011-05-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of brittle compounds, low joint strength and poor plasticity in the welded joints between titanium metal materials and copper or copper alloys, and to provide a high-strength electron beam welding process between titanium metal materials and copper or copper alloys

Method used

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  • High-strength electron beam welding process of titanium metal material and copper or copper alloy
  • High-strength electron beam welding process of titanium metal material and copper or copper alloy
  • High-strength electron beam welding process of titanium metal material and copper or copper alloy

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specific Embodiment approach 1

[0010] Specific implementation mode one: combine Figure 1-Figure 3 To illustrate this embodiment, the steps of a titanium metal material and copper or copper alloy high-intensity electron beam welding process in this embodiment are:

[0011] Step 1. Make filling material. In the special mold 1, fill the powder evenly mixed with vanadium powder and copper powder. The mass percentage of vanadium powder in the mixed powder is 20-70%, and the balance is copper powder. The mixed powder is put in the press Under the action of punch 2, cold press forming, the pressure is 500-700Mpa, and the metal thickness of the filling layer after pressing is 0.5-2.0mm. Diffusion treatment is carried out for 1-6h to form a filling layer, which is a vanadium-copper alloy layer 3;

[0012] Step 2, preset vanadium-copper alloy layer 3 in the butt joint of titanium metal material 4 and copper or copper alloy 5, and fix it with TIG spot welding, so that the distance between the middle section of vanad...

specific Embodiment approach 2

[0014] Embodiment 2: The purity of the vanadium powder and the copper powder in the step 1 of this embodiment is above 99.9%. Other conditions and steps are the same as in Embodiment 1.

specific Embodiment approach 3

[0015] Embodiment 3: In step 1 of this embodiment, the particle size of the copper powder is 200-500 mesh, and the particle size of the vanadium powder is 200-500 mesh. Easy to shape. Other conditions and steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a high-strength electron beam welding process of a titanium metal material and a copper or copper alloy, in particular to a welding process of a titanium metal material and a copper or copper alloy. The invention solves the problems of low joint strength and poor plasticity of because of brittle compounds existing in a welding joint of the titanium metal material and the copper or copper alloy. The process comprises the following steps of: filling the uniformly mixed powder of vanadium and copper powder in a specific die, carrying out chill pressing and forming the mixed powder under the action of a press punch so that the metal thickness of a pressed filling layer is 0.5-2.0 mm; putting the pressed and formed filling layer into a vacuum heating furnace for dispersion treatment, wherein the filling layer is a copper alloy layer; presetting a barium-copper alloy layer in a butt seam of the titanium metal material and the copper or copper alloy, fixing through TIG (Tungsten Inert Gas) spot welding, ultrasonically cleaning, carrying out acidic cleaning, drying and arranging in a vacuum chamber for vacuum electron beam welding; and welding by adopting an electron beam, wherein the beam current acting point is arranged on the barium-copper alloy layer in welding. The high-strength electron beam welding process is suitable for the welding of a titanium metal material and a copper or copper alloy.

Description

technical field [0001] The invention relates to a welding process of titanium metal material and copper or copper alloy, in particular to a high-strength electron beam welding process of titanium metal material and copper or copper alloy, belonging to the technical field of welding of dissimilar refractory metals. Background technique [0002] The development of the aerospace industry puts forward higher indicators for the performance of the new generation of engines, requiring a substantial increase in the working pressure and temperature of the thrust chamber of the engine, and at the same time increasing the thrust-to-weight ratio of the engine itself to further enhance its fast maneuverability. Titanium alloy is used instead of steel body and copper alloy to be used in the manufacture of engine thrust chamber body, which can achieve partial weight reduction of 10-15%, meeting the high-performance requirements of the new generation of liquid oxygen kerosene high-thrust roc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/06B23K103/18
Inventor 张秉刚王廷陈国庆冯吉才唐奇
Owner HARBIN INST OF TECH
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