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Laser beam welding technique of berylliumcopper alloy mold

A laser welding and beryllium copper alloy technology, applied in laser welding equipment, welding equipment, metal processing equipment and other directions, can solve the problems of increasing the cost of mold use, inability to partially repair the mold, shortening the service life of the mold, etc., and achieve a small heat affected area. , High hardness, small mold deformation effect

Inactive Publication Date: 2009-06-24
成都敏捷制造工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, argon arc welding or plasma beam welding in the prior art has a large input heat, which will cause severe deformation of the mold. Partial heat treatment cannot be performed, so its high hardness cannot be obtained. Therefore, the first two welding methods cannot partially repair the worn and damaged parts of the mold, so the mold can only be scrapped, which greatly shortens the service life of the mold and increases the life of the mold. The cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: beryllium-copper alloy injection mold wear and tear repair, adopt filling wire welding process as follows:

[0011] 1) Clean the surface of the mold and Φ0.30mm beryllium copper welding wire with carbon tetrachloride, remove oil and impurities, and dry naturally.

[0012] 2) Fix the cleaned mold on the welding machine table, and use a 75W, laser wavelength of 1.06um and Nd:YAG pulse laser welding machine with X, Y, and Z axis processing machines to perform wire filling welding under argon protection , where the welding process parameters are: pulse energy E=15.0J, pulse width tp=3.0ms, beam diameter d=0.40mm, pulse frequency F=5.0Hz; argon gas flow rate during welding is 15.0L / min.

[0013] 3) Use the welding machine used in step 2) to perform partial heat treatment on the welded part of the mold. Wherein, the heat treatment process parameters are: pulse energy E=10.0J, pulse width tp=3.0ms, beam diameter d=1.20mm, pulse frequency F=2.0Hz. The local heat...

Embodiment 2

[0015] Embodiment 2: beryllium-copper alloy injection mold defect is repaired, and adopts filling wire welding process as follows:

[0016] 1) Clean the surface of the mold and Φ0.50mm beryllium copper welding wire with carbon tetrachloride, remove oil and impurities, and dry naturally.

[0017] 2) Fix the cleaned mold on the welding machine table, and use a 300W Nd:YAG pulse laser welding machine with a laser wavelength of 1.06um and X, Y, and Z-axis processing machines to perform wire-filled welding under argon protection , where the welding process parameters are: pulse energy E=17.0J, pulse width tp=5.0ms, beam diameter d=0.80mm, pulse frequency F=10.0Hz; argon gas flow rate during welding is 20.0L / min.

[0018] 3) Use the welding machine used in step 2) to perform partial heat treatment on the welded part of the mold. Wherein, the heat treatment process parameters are: pulse energy E=20.0J, pulse width tp=5.0ms, beam diameter d=2.00mm, pulse frequency F=1.0Hz. The local...

Embodiment 3

[0020] Embodiment 3: beryllium-copper alloy injection mold defect is repaired, adopts filling wire welding process as follows:

[0021] 1) Clean the mold and the surface of the Φ0.40mm beryllium copper welding wire with carbon tetrachloride, remove oil and impurities, and dry it.

[0022] 2) Fix the cleaned mold on the welding machine table, and use a 200W Nd:YAG pulse laser welding machine with a laser wavelength of 1.06um and X, Y, and Z axis processing machines to perform wire-fill welding under argon protection , where the welding process parameters are: pulse energy E=16.0J, pulse width tp=4.0ms, beam diameter d=0.60mm, pulse frequency F=8.0Hz; argon gas flow rate during welding is 15.0L / min.

[0023] 3) Use the welding machine used in step 2) to perform partial heat treatment on the welded part of the mold. The heat treatment process parameters are: pulse energy E=15.0J, pulse width tp=5.0ms, beam diameter d=1.20mm, pulse frequency F=5.0Hz. The local heat treatment tim...

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Abstract

The invention provides a process for carrying out laser welding on a beryllium copper alloy mould. The process comprises the following operation steps: firstly, carbon tetrachloride is used to clean the mould and the surface of a beryllium copper welding wire with phi of between 0.30 and 0.50 mm; a Nd:YAG pulse laser welder with power of between 75 and 300 W, laser wavelength of 1.06um and an X, Y and Z-axis processing machine is used to carry out wire filling and welding to the needed dimension under protection of argon gas; the welder is used to carry out local heat treatment on a welding part of the mould; and finally, the surface of the mould is subjected to final finishing to the needed precision. The laser facula is very small; the diameter of the local part of the weldable mould can reach about 1mm; the mould has small deformation; one welder simultaneously carries out wire filling and welding and heat treatment; the process is simple and saves investment; a weld bead of the mould has no disadvantages of cracks, pores and the like; and a weldless part of the mould is not influenced and has high rigidity, thereby ensuring the service life of the mould. The process is mainly used for rehabilitating the abrasion and local damage of the beryllium copper alloy mould.

Description

technical field [0001] The invention relates to a welding process, in particular to a beryllium-copper alloy mold laser welding process. Background technique [0002] Because beryllium copper alloy has high thermal conductivity and high hardness, it is widely used in the manufacture of high-precision thermoplastic molds. This kind of mold tends to be partially worn and partially damaged during manufacture and use. On the one hand, argon arc welding or plasma beam welding in the prior art has a large input heat, which will cause severe deformation of the mold. Partial heat treatment cannot be performed, so its high hardness cannot be obtained. Therefore, the first two welding methods cannot partially repair the worn and damaged parts of the mold, so the mold can only be scrapped, which greatly shortens the service life of the mold and increases the life of the mold. The cost. Contents of the invention [0003] The object of the present invention is to overcome the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/34B23K26/42C21D9/50C21D11/00B23K103/08
Inventor 黄政树蒋国纯黄海基
Owner 成都敏捷制造工程有限公司
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