Manufacturing method for tungsten copper mold blocks

A tungsten block and tungsten-copper technology is applied in the field of preparation of metal connection modules, which can solve problems such as inapplicability of tungsten-copper welding, and achieve the effects of low cost, low production cost and simple equipment.

Active Publication Date: 2015-05-06
安泰天龙钨钼科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional diffusion welding, brazing and other welding methods are not suitable for the welding of tungsten copper.

Method used

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  • Manufacturing method for tungsten copper mold blocks
  • Manufacturing method for tungsten copper mold blocks
  • Manufacturing method for tungsten copper mold blocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Industrial pure tungsten is connected with oxygen-free copper, figure 2 and image 3 They are the top view of the tungsten-copper module 4 in Embodiment 1 and the cross-sectional view along the AA' plane. The size of the tungsten-copper module 4 is 30mm×30mm×15mm, and there is a Φ15mm×15mm through hole on the 30mm×30mm surface of the tungsten block. Welded inside the through hole of the tungsten block, the wall thickness of the copper pipe 5 is 1.5 mm, the outer diameter is 15 mm, and the inner diameter is 12 mm. The preparation method of the tungsten copper module 4 includes the following steps:

[0066] 1. Mill the part of the surface of the tungsten block that will be connected with copper (that is, the inner wall of the through hole) to a roughness Ra of 3 μm, and sequentially soak it with 5% hydrochloric acid for 30 seconds, wash it with tap water for 40 seconds, and wash it with a metal cleaning solution (the formula is 98wt% h 2 SO 4 100ml / L, K 2 Cr 2 o 7 ...

Embodiment 2

[0075] Industrial pure tungsten is connected with oxygen-free copper, Figure 7 It is a schematic diagram of the tungsten-copper module of Embodiment 2, wherein the size of the tungsten block 8 is 126mm×26mm×8mm, and an oxygen-free copper plate 9 of 126mm×26mm×2mm is welded on the surface of the tungsten block 8 (126mm×26mm surface). Its preparation method comprises the following steps:

[0076] 1. Grind the part (126mm×26mm surface) to be connected with copper on the surface of tungsten block 8 until the roughness Ra is 4 μm, soak it with 7% hydrochloric acid for 20s, wash it with tap water for 30s, and wash it with a metal cleaning solution (the formula is 98wt% h 2 SO 4 100ml / L, K 2 Cr 2 o 7 50g / L, the solvent is deionized water) soak for 50s, soak in deionized water for 1min, and clean the scale and oil on the surface.

[0077] 2. Prepare an excessive amount of copper ingots, after polishing the outer surface, soak them with 5% hydrochloric acid for 30s, rinse with t...

Embodiment 3

[0083] Industrial pure tungsten is connected with oxygen-free copper, the size of tungsten block is 4mm×5mm×5mm, and 4mm×5mm×15mm oxygen-free copper is welded on the surface of tungsten block 4mm×5mm. Its preparation method comprises the following steps:

[0084] 1. Grind the part of the tungsten block surface that will be connected with copper (4mm×5mm surface) until the roughness Ra is 5μm, and then soak it with 7% hydrochloric acid for 35s, rinse with tap water for 50s, and metal cleaning solution (the formula is 98wt% h 2 SO 4 100ml / L, K 2 Cr 2 o 7 50g / L, the solvent is deionized water) soak for 70s, soak in deionized water for 2min, and clean the scale and oil on the surface.

[0085] 2. Prepare an excessive amount of copper ingots, after polishing the outer surface, soak them in 7% hydrochloric acid for 35s, rinse with tap water for 50s, and metal cleaning solution (the formula is 98wt% H 2 SO 4 100ml / L, K 2 Cr 2 o 7 50g / L, the solvent is deionized water) soak ...

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Abstract

The invention relates to a tungsten copper welding method. According to the method, a deposition and hot-pressing combined technology is used for welding copper to the surface of tungsten. The tungsten block to which the copper is welded is further machined to obtain tungsten copper mold blocks in various shapes and sizes, and for example, the tungsten copper mold block used for a divertor of a Tokamak fusion device is included.

Description

technical field [0001] The invention belongs to a method for preparing a metal connection module, in particular to a method for preparing a tungsten-copper module. Background technique [0002] Tungsten has become one of the popular candidate materials for fusion reactors facing plasma due to its high melting point, high hardness, resistance to neutron irradiation, good thermal conductivity, and low activity. Today, the United Kingdom's European Joint Torus (JET), France's Tore-Supra, and the Chinese Academy of Sciences' EAST have all used tungsten as the Plasma Facing Material (PFM) for the divertor. The International Thermonuclear Experimental Reactor (ITER), which is under construction, will also use pure tungsten as the plasma-facing material of the divertor in the first phase of the experiment. [0003] Copper has excellent thermal conductivity and electrical conductivity, and its thermal conductivity is more than 4 times that of powder metallurgy tungsten. It can effe...

Claims

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Application Information

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IPC IPC(8): B22D19/16B21D37/10C23G1/10G21B1/13
CPCY02E30/10
Inventor 杨义兵苏国军钟铭刘俊海韩蕊蕊
Owner 安泰天龙钨钼科技有限公司
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