Method and device for low-gravity 3D printing of molten iron alloy

Abstract

The invention provides a molten iron alloy low-gravity 3D printing method and device and belongs to the technical field of metal material machining and manufacturing. The device comprises a high-temperature molten iron alloy container, a molten iron alloy ceramic conduit, a heating coil, a molten iron alloy flow control valve, a temperature measurement thermocouple, a molten iron alloy printing nozzle, molten metal zinc, a molten metal zinc containing tank and an iron alloy printing base plate, wherein the molten iron alloy ceramic conduit is installed below the high-temperature molten iron alloy container, the heating coil is arranged on the outer side of the molten iron alloy ceramic conduit, and molten iron alloy is conveyed to the molten iron alloy printing nozzle through the molten iron alloy flow control valve; the molten metal zinc containing tank is arranged below the molten iron alloy printing nozzle, the iron alloy printing base plate is arranged on the bottom of the molten metal zinc containing tank, and component printing starts from the base plate. By the adoption of the device, complicated iron alloy component machining efficiency can be improved, and product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of metal material processing and manufacturing, in particular to a method and device for low-gravity 3D printing and manufacturing of molten iron alloys. Background technique [0002] 3D printing manufacturing technology is one of the representative new technologies in the development of intelligent manufacturing. Its main method is to directly process the digital model or parts of the product through the accumulation of materials (Yang Yongqiang, Liu Yang, Song Changhui. "Current Status of 3D Printing Technology for Metal Parts and Research Progress", Electromechanical Engineering Technology, 2013, 42(4): 1-7.), 3D printing technology has been applied in medicine, aviation, construction and other fields (Zeng Guang, Han Zhiyu, Liang Shujin, Zhang Peng, Chen Xiaolin, Zhang Pingxiang . "Application Research of Metal Parts 3D Printing Technology", China Materials Progress, 2014,33(6):376-382.). However, among...

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Problems solved by technology

However, due to the easy oxidation of molten metal in the air and the flow and splash under the action of gravity, the surface quality of the product is poor (Liu Jian, Yin Fengliang, Meng Fanjun, Gu Haiqing. "Current Problems and Countermeasures in 3D Printing Remanufacturing", Machinery, 2014, 41(6): 8-11.)

At the same time, for horizontal printing with a large angle in space, due to the effect of gravity, auxiliary supports are required, which makes the process complicated. In some cases, the removal of auxiliary supports is also a troublesome problem. Therefore, if there is one that can solve oxidation and gravity problems, the application of 3D printing of molten metal will be more extensive

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