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A high-efficiency metal 3dp printing method

A high-efficiency, metal-based technology, applied in metal processing equipment, transportation and packaging, additive manufacturing, etc., can solve the problems of low metal printing efficiency and high equipment cost by SLS process, and achieve the effect of saving printing time and improving printing efficiency

Active Publication Date: 2021-03-16
NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to propose a three-dimensional jet printing metal forming method in view of the disadvantages of low metal printing efficiency and high equipment cost of the SLS process. A suitable binder is selected to match the array nozzle and acts on the metal powder. On, shorten the metal 3D printing time, achieve the purpose of rapid prototyping

Method used

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  • A high-efficiency metal 3dp printing method
  • A high-efficiency metal 3dp printing method
  • A high-efficiency metal 3dp printing method

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Embodiment Construction

[0033] The present invention can be better understood from the following examples.

[0034] The structures, proportions, sizes, etc. shown in the accompanying drawings of the description are only used to match the content disclosed in the description, for those who are familiar with the technology to understand and read, and are not used to limit the conditions for the implementation of the present invention, so there is no Technically, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the technical content disclosed in the present invention without affecting the functions and objectives of the present invention. within the range that can be covered. At the same time, terms such as "upper", "lower", "front", "rear", and "middle" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. , the change or adjustment of its relat...

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Abstract

The invention discloses a high-efficiency metal 3DP printing method. The final molded parts are obtained through the steps of metal powder cold coating, binder preparation, parison printing, degreasing, high-temperature sintering, and copper infiltration treatment. The 3DP printing of the present invention first coats the metal powder surface with a film. During printing, the nozzle deposits an ethanol-based binder on the surface of the powder layer, and the binder penetrates into the powder layer through capillary action and dissolves the resin on the surface of the coated metal particles; to be bonded After the agent volatilizes, the dissolved resin re-precipitates, and the initial parison is formed through the bonding bridge between the particles. The strength of the initial parison is provided by the cohesive force of the phenolic resin molecules formed between the particles. Compared with the SLS process, the 3DP printing method of the present invention has higher printing efficiency and can save more printing time, and compared with the high cost and maintenance cost of SLS equipment, 3DP equipment is more easily accepted by civilian enterprises.

Description

technical field [0001] The invention relates to a high-efficiency metal 3DP printing method, which belongs to the field of material forming. Background technique [0002] The 3DP process for printing metal parts is similar to the SLS (Selective laser sintering) process, both of which are formed by coated metal powder materials. Above, through the comprehensive action of liquid and solid powder, the powder is solidified and formed to obtain the initial parison. After proper post-processing, the final metal parts are obtained. [0003] Common 3D printing processes for metals mainly include two types: one is the metal powder direct sintering molding method (SLM process), that is, the metal powder is scanned and sintered by a high-power laser, and the shape is superimposed layer by layer, and the molded parts are completed after surface post-treatment The production of parts. The second is the coated metal powder laser sintering molding method (SLS process). First, the powder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F10/14B22F3/22B22F3/10B22F3/24B33Y10/00B22F1/00B33Y70/00
CPCB22F3/1017B22F3/22B22F3/24B33Y10/00B33Y70/00B22F2998/10B22F1/103B22F1/10
Inventor 唐龙书杨继全夏俊
Owner NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP