Method for performing sand blasting on 3D printed metal parts
A technology of sandblasting and 3D printing, which is applied in the direction of metal processing equipment, abrasives, manufacturing tools, etc., can solve the problems of excessive sandblasting, unsuitable metal parts, poor density and other problems, so as to avoid overblasting or The effects of under-blasting, improving surface strength, and increasing service life
Inactive Publication Date: 2015-01-28
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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Problems solved by technology
3D printing can obtain metal parts with complex structures and shapes, and its advantages are very obvious. However, 3D printed metal parts generally have the defects of low surface gloss and poor density of parts, and post-processing processes such as polishing are usually required
[0003] However, due to the obvious difference between the macro and micro structures of the 3D printed metal parts and the integrally formed technical body, the ordinary sandblasting technology is not suitable for the metal parts obtained by 3D printing.
In addition, the dust of ordinary sandblasting technology affects the health of operators, and it is difficult for conventional sandblasting technology to cut the surface of the workpiece evenly, and there are often problems that the local sandblasting is too large, and some parts are not sprayed
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Embodiment 1
[0021] The method for sandblasting 3D printing metal parts in this embodiment includes the following steps:
[0022] First adjust the values of d1, d2 and θ and install the workpiece to be processed on the workpiece clamping system 1, then start the sandblasting system 2 and make the workpiece clamping system 1 drive the workpiece to rotate at a certain speed, at this time the sand body 3 starts from the spraying The sand system 2 is ejected and sprayed onto the surface of the workpiece to perform sandblasting on the workpiece.
[0023] In this example:
[0024] During the sandblasting process, the angle θ between the sandblasting system 2 and the workpiece clamping system 1 is controlled to be 30°-45° or 135°-150°;
[0025] The sandblasting body in the sandblasting process is a mixed liquid of corundum powder and water, the resistance value of the water in the mixed liquid is ≥ 10MΩ·cm, and the mass concentration of sand in the mixed liquid is 15% to 40%;
[0026] The ave...
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Abstract
The invention discloses a method for performing sand blasting on 3D printed metal parts. The method using special equipment to perform sand blasting on the 3D printed metal parts. The equipment comprises a workpiece clamping system and a sand blasting system which are capable of rotating around shafts, the sand blasting system comprises a clamping part I and a clamping part II which face to each other, the distance d1 between the clamping part I and the clamping part II is adjustable, and the angle theta of sand blasting system and the workpiece clamping system is adjustable. During sand blasting processing, the workpiece clamping system drives a workpiece at a certain speed to rotate, a sand body is sprayed out from the sand blasting system to the surface of the workpiece, so that the workpiece is subjected to sand blasting processing. The method for performing sand blasting on the 3D printed metal parts is capable of guaranteeing the alls positions of a 3D printed metal part to be subjected to uniform sand blasting processing, and helps to reduce surface defects caused by sand blasting, improve the surface strength of the parts, and enable proper crushing stress to be left on the surface of the part.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional manufacturing, and relates to a method for post-processing 3D printed metal parts, in particular to a method for sandblasting 3D printed metal parts. Background technique [0002] The 3D printing technology of metal parts is the most cutting-edge and most potential technology in the whole 3D printing system, and it is an important development direction of advanced manufacturing technology. 3D printing can obtain metal parts with complex structures and shapes, and its advantages are very obvious. However, 3D printed metal parts generally have the defects of low surface gloss and poor density of parts, and post-processing processes such as polishing are usually required. The sandblasting technology uses high-pressure compressed air as the driving force to form a high jet beam to spray the spray material (copper ore, quartz sand, corundum, iron sand, sea sand) to the surface of the workpiec...
Claims
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IPC IPC(8): B24C1/10B24C11/00
CPCB24C1/10B24C11/00
Inventor 段宣明杨毓杰
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI