Method for conducting synchronous modification on powder-feeding type laser additive manufacturing manufactured workpiece

Abstract

The invention discloses a method for conducting synchronous modification on a powder-feeding type laser additive manufacturing manufactured workpiece. A synchronous following rolling process is addedin the machining process of the laser additive manufacturing manufactured workpiece, the method comprises the steps that a suitable rolling wheel size is selected; the height of a rolling wheel for achieving the rolling function is calibrated; as for the rolling wheel with the height being calibrated, the rolling force magnitude range is judged according to the rolling machining effect to be reached by the manufactured workpiece, and the feed amount of the rolling wheel is adjusted accordingly; a 3D print nozzle runs on a printed substrate according to the printing path; the rolling force magnitude can be adjusted according the relative height of current manufactured workpiece machining in the printing process; the rolling wheel with adjusting of the rolling force magnitude being finishedis subjected to synchronous following rolling work; and the printing layers are stacked layer by layer, and the metal manufactured workpiece is formed after cooling. The method for conducting synchronous modification on the powder-feeding type laser additive manufacturing manufactured workpiece can improve the inner quality and internal structure of the metal manufactured workpiece without changing the shape of the workpiece, the compactness of the manufactured workpiece is increased, and the strength of the manufactured workpiece is improved.

Description

technical field [0001] The invention belongs to the fields of additive manufacturing and laser manufacturing, and relates to a method for synchronously modifying powder-feeding laser additive manufacturing parts, in particular to a rolling process. Background technique [0002] Additive manufacturing technology, also known as 3D printing technology, directly manufactures products by accumulating materials layer by layer, which is fundamentally different from traditional subtractive manufacturing methods. Due to the characteristics of high material utilization rate, short production cycle and low cost, additive manufacturing has a wide range of applications in aerospace, medical, automotive and many other fields. [0003] The manufacturing materials of additive manufacturing technology can be divided into metal, non-metal and medical biomaterials. With the globalization of manufacturing industry and the increasingly fierce market competition, higher requirements are put forwa...

AI Technical Summary

Problems solved by technology

However, like other widely used post-processing methods, the process is further complicated, which increases the manufacturing cost and makes it difficult to guarantee the qualified rate of the produced products.

However, the process method of rolling to enhance the strength of parts, which is widely used in various fields, is still blank in the application of laser additive manufacturing parts, and the method of realizing simultaneous modification of additive manufacturing parts has not yet been reported.

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