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Selective laser melting forming method of flat metal part in flow line direction

A technology for selective laser melting and flat metal, applied in the field of additive manufacturing, which can solve the problems of parts flow line defects and affecting the mechanical properties of parts

Active Publication Date: 2018-09-04
JIANGSU HAIYU MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing selective laser melting forming technology has the following problems: in the conventional selective laser melting technology, the direction of the laser is multiple parallel paths, and the streamline inside the part has major defects, which will affect the mechanical properties of the part in a specific direction

Method used

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  • Selective laser melting forming method of flat metal part in flow line direction
  • Selective laser melting forming method of flat metal part in flow line direction
  • Selective laser melting forming method of flat metal part in flow line direction

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited to the examples.

[0020] See attached figure 1 As shown, what is described in this embodiment is a laser melting forming method for flat metal parts along the streamline direction. Now select a gear as a model. The diameter of the degree circle is 200mm, the diameter of the base circle is 187.94mm, the number of teeth is 20, and the modulus m is 10. The tooth width coefficient is 0.2, the tooth width is 40mm, and the inner hole diameter is 80mm.

[0021] An example of using the above-mentioned parts to perform selective laser melting along the streamline of the parts. The specific steps are:

[0022] (1) Simulate and optimize the three-dimensional streamline model of the gear. The parts are layered into parallel slices of equal thickness in the horizontal direction, and the streamline of each slice is a closed ...

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Abstract

The invention relates to the technical field of additive manufacturing, in particular to a selective laser melting forming method of a flat metal part in the flow line direction. According to the method, the end face of one side of a to-be-machined part acts as a substrate, a part flow line is simulated through software design and is optimized, selective laser melting forming is carried out in a layered manner with a continuous laser beam along a part predetermined flow line from an inner ring annular flow line from inside to outside, and the width of a molten area is controlled by a computercontrolling a laser scanning speed and a lapping rate. The purpose that the mechanical property of the part approaches to a forged piece level is achieved finally.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for selective laser melting of flat metal parts along the streamline direction. Background technique [0002] Selective laser melting forming technology is a rapid prototyping technology developed based on selective laser sintering, which overcomes the latter's shortcomings of complex process, poor forming accuracy and poor mechanical properties. Using the idea of ​​layered manufacturing, the parts to be formed are layered and sliced ​​and selectively melted layer by layer. During the forming process, laser loading is used, and different melting and forming widths are obtained with varying scanning speeds, and the formed parts are melted in a multi-layer stacking manner. [0003] The essence of selective laser melting is the process of using high-energy laser beam irradiation to completely melt the metal powder, and then rapidly cooling and solidifying int...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/38B22F10/368B22F10/36B22F10/28B22F10/366B22F10/80Y02P10/25
Inventor 顾成义张晓磊罗开玉沈华宾鲁金忠
Owner JIANGSU HAIYU MACHINERY