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Abstract

Disclosed is a method for spraying a liquid raw material for three-dimensional printing, in which a liquid raw material inside a flow channel is sprayed out of the flow channel, a liquid section or a droplet is formed outside the flow channel, the spraying process is controlled by a control circuit, and inside the flow channel, the liquid raw material is fully or partially connected to a gasification circuit, the liquid raw material which is connected to the gasification circuit has a region with a relatively high resistance (14), a current of a certain intensity is applied to the liquid raw material which is connected to the gasification circuit, the region with a relatively high resistance of the liquid raw material is fully or partially gasified, and an impact force generated through gasification is utilized to push the liquid raw material out of the flow channel, and thus the spraying of the liquid raw material is achieved. Disclosed is a device for spraying a liquid raw material for three-dimensional printing, which mainly consists of a housing and a control circuit, wherein a raw material inlet and a raw material outlet are arranged on the housing, a flow channel is arranged inside the housing, the control circuit controls an operating process, a narrow region is arranged inside the flow channel, an electrical access region is formed on each side of the narrow region. The method and the device can realize a high-speed spraying of a liquid raw material in the field of 3D printing, a flexible control over the fluidity of the liquid raw material is obtained, raw material droplets with a tiny volume can be generated, and the structure is simple, the stability is high.

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