China's metal 3D printing technology made a major breakthrough

Reporter Xia Jing, correspondent Chen Chuan learned from Huazhong University of Science and Technology on the 22nd, led by Professor Zhang Haiou Huazhong University of Science and Technology led the "casting and milling integration" metal 3D printing technology, successfully produced the world's first 3D printing forgings. The result is expected to change the history of the world's metal parts manufacturing. Although the current 3D metal printing technology to achieve a green casting, but due to the lack of forging technology, can not solve the cracks and deformation defects.

In order to solve this worldwide problem, after more than 10 years of research, Zhang Haiou team independently developed the equipment of "micro-casting and forging synchronous compounding" and creatively combined metal casting and forging technology to realize the first ultra-miniature " While casting edge forging technology ", a substantial increase in the strength and toughness parts, to ensure the fatigue life and reliability of components.

Professor Zhang Haiou introduction, the use of the technology to produce parts, the level of precision than the laser 3D printing increased by 50%. At the same time, parts shape and size and organizational performance controllable, greatly reducing product life cycle. The technology uses metal wire as raw material, material utilization rate of more than 80%, while the cost of silk material price is only about one-tenth of the commonly used materials. In terms of heat source, the cost is only one tenth of that of the imported laser due to the high efficiency and cheap arc.

It is understood that "casting, milling and milling" metal 3D printing technology has broad application prospects, will bring a series of manufacturing elements including design, materials, technology, testing, control, equipment and other changes, and promote China's traditional industrial restructuring.

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Steel Melting Furnace

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