Method for mouldless directly manufacture of parts and mould

A manufacturing method and technology of parts, applied in the field of rapid manufacturing of parts, can solve the problems of insufficient energy and low forming precision, and achieve the effects of low equipment and operation costs, low forming costs, and good organizational properties

Active Publication Date: 2009-02-04
武汉昱峰科技产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the forming precision of this technology is not high, and micro-arc plasma is used to improve the precision when depositing and forming parts that require high precision, but its energy is insufficient, and the stability and clustering of the arc column need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: first adopt the plasma deposition (surfacing) spray gun of numerical control, according to the requirement of part forming, use iron-nickel-chromium alloy wire material, on the substrate according to the digitized forming path obtained by three-dimensional CAD model deposition forming; Secondly, the laser beam emitted by the YAG solid-state laser with a power of 50w is combined with the plasma arc with a transfer arc current of 150A to achieve the purpose of compressing the plasma arc column and improving the forming accuracy. In order to achieve the required forming height, the above steps can be carried out several times until the height requirement is reached.

Embodiment 2

[0010] Example 2: According to the requirements of part forming, nickel-based alloy powder is used to transfer a plasma arc with a transfer arc current of 120A and a Q-switched laser beam with a power of 150w on the substrate according to the digital deposition forming path obtained from the three-dimensional CAD model Composite forming. The above steps are carried out several times, and the layer-by-layer deposition forming reaches the required height.

Embodiment 3

[0011] Example 3: Using nickel-aluminum intermetallic compound powder, on the substrate according to the digital deposition forming path obtained from the three-dimensional CAD model, a plasma arc with a transferred arc current of 180A and a Q-switched laser beam with a power of 200w are combined, layer by layer Deposition forming; secondly, during the forming process or after forming, the Q-switched laser is used to irradiate the surface of the forming body from the front, and the laser surface removal micro-finishing is performed to improve the surface quality.

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PUM

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Abstract

A technology for directly manufacturing part and mould without mould includes such steps as designing 3D CAD model of a part, tomographic processing to obtain the data of each layer, planning the route to generate the numeral control codes of each layer, and using numeral controlled plasma thermo-welding spray gun or argon arc welding gun to thermo-weld the alloy, intermetal compound, ceramal, or ceramic wire or powder for shaping layer by layer while combining the plasma arc or argon arc with laser beam. It has high speed and low cost.

Description

technical field [0001] The invention belongs to a rapid manufacturing method for parts. Background technique [0002] Direct rapid metal manufacturing (Direct Rapid Metal Manufacturing) has become the international frontier of RP technology research, and a variety of methods for directly and rapidly manufacturing metal parts have emerged. Among them, the methods that can obtain high density mainly include high-power laser near-net-shaping technology (Laser Engineering Net-Shaping, LENS), electron beam deposition technology, plasma deposition method and so on. See H. Muller, J. Sladojevic. Rapid tooling approaches for small lotproduction of sheet-metal parts, Journal of Material Processing Technology, 2001, 115: 97-103; Wang Huaming. Laser surface modification of metal materials and laser rapid prototyping of high-performance metal parts Advances in Technology Research. Acta Aeronautical Sciences, 2002, 23(5): 473-478. The LENS method uses a high-power laser to melt the met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105
Inventor 张海鸥王桂兰
Owner 武汉昱峰科技产业发展有限公司
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