Patent ID: 11969944
Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Field: Other special machines (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 4:
5. An operating method based on liquid-solid chemical reaction deposition, characterized in that, the method is implemented using the 3D printer based on liquid-solid chemical reaction deposition as claimed in claim 4, the method comprising the following steps:
step 1: creating a three-dimensional digital model based on a shape of a part to be processed, and then saving it in a STL format file; using slicing software to slice the three-dimensional digital model; a thickness of each slice is the same; and the slices contain profile information of the part; importing a file after slicing into movement path planning software to obtain moving path data of the liquid nozzle (13);
step 2: preparing the gel-like reactant (3) and base powder substance then setting a flow rate of the gel-like reactant (3) through a solenoid valve (5), and finally placing the gel-like reactant (3) and the base powder substance in a liquid supply tank of the liquid supply device (1) and in the powder container (14) respectively;
step 3: adjusting coordinate positions of the liquid nozzle (13) through the three-axis linkage mechanism; moving the nozzle of the liquid nozzle (13) to on top of the base plate of the forming container (16) in advance, at a slice thickness away from the base plate;
step 4: starting a processing operation; the three-axis linkage mechanism carries the liquid nozzle (13) according to the movement path planning of the control system of the 3D printer to follow the movement path data in step 1 to selectively spray the gel-like reactant (3) on the base plate; the gel-like reactant (3) in contact with the base powder substance reacts chemically and deposit to complete a processing of a formed layer of the part;
step 5: after completing step 4, lowering the forming base by a height of the slice thickness; raising powder of the powder container (14) by the height of a slice; driven by the powder brush (12) of the powder spreading mechanism, covering a surface of the formed layer with the base powder substance again to form a new base powder substance layer; the liquid nozzle (13) follows a movement path of a next layer; spraying the gel-like reactant (3) onto the new base powder substance layer on the surface of the formed layer; through a chemical reaction of the gel-like reactant (3) with the new base powder substance layer, generated substance is deposited on the surface of the formed layer to complete a processing of another formed layer of the part;
step 6: repeating steps 4 to 5 until the entire processing of the part is completed.