Steel/aluminum bimetal augmentation/equal material composite manufacturing method
A manufacturing method and bimetal technology, applied in the field of composite material manufacturing, can solve the problems of limited size of formed workpieces, low interface strength of bimetal composite casting, and reduced interface bonding strength, so as to shorten production cycle and improve shear resistance. , the effect of improving production efficiency
Active Publication Date: 2020-09-08
北京北方恒利科技发展有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that hard and brittle intermetallic compounds are easily generated at the interface of steel / aluminum bimetal composite casting, which reduces the bonding strength of the interface, and to provide a steel / aluminum bimetal additive / equal material composite manufacturing method
This method adopts the combination of selective laser melting technology (3D printing technology) and casting, which can solve the problems of low interface strength of bimetallic composite casting and limited size of molded workpiece, and finally improve the bonding strength of bimetallic interface
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[0025] In order to enable those skilled in the art to better understand the present invention, the present invention will be further clearly and completely described below in conjunction with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0026] A steel / aluminum bimetal additive / equal material composite manufacturing method, comprising the steps of:
[0027] 1) Drying and pre-screening the alloy steel powder;
[0028] The specific operation is: place the alloy steel powder in a drying box for drying, set the temperature of the drying box to 100-200°C, set the drying time to 2-4h, and use a 200# mesh screen to sieve the powder after cooling pink.
[0029] 2) Use 3D drawing software to design a matrix model with a complex porous structure, and prepare a matrix with a complex porous st...
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The invention relates to a steel / aluminum bimetal augmentation / equal material composite manufacturing method, and aims to solve the problems that hard and brittle intermetallic compounds are easily generated at a steel / aluminum bimetal composite casting interface and bonding strength of the interface is reduced. The manufacturing method comprises the steps that firstly, alloy steel powder is driedand pre-screened; three-dimensional drawing software is used to design a matrix model with a complex porous structure, and a matrix with the complex porous structure is prepared through selective laser melting technology; the obtained matrix with the complex porous structure is cleaned to remove impurities on the matrix; the treated matrix is placed in a flask, and then molten metal aluminum is injected into the flask; and mechanical combination is achieved by solid-liquid composite casting, and the steel / aluminum bimetal composite material is finally obtained. The selective laser melting technology and casting are combined to prepare the steel / aluminum bimetal composite material, and the high-strength mechanical combination of the bimetal interface is realized.
Description
technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to an additive manufacturing method combining 3D printing and casting, in particular to a steel / aluminum bimetal additive / equal material composite manufacturing method. Background technique [0002] Bimetallic composites are materials prepared by combining two or more physically and chemically different metals, and have good comprehensive mechanical properties. For example: steel has the advantages of high strength and wear resistance; aluminum has the advantages of light weight and corrosion resistance; steel / aluminum bimetallic composite materials combined with steel and aluminum have excellent mechanical properties and have been widely used in automobile manufacturing, machining, aerospace, etc. field. [0003] Steel / aluminum bimetallic composites are usually prepared by solid-liquid composite casting. Traditionally, liquid aluminum is poured on the steel substra...
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Login to View More IPC IPC(8): B22F3/11B22D19/16B33Y10/00
CPCB22F3/11B22D19/16B33Y10/00Y02P10/25
Inventor 王宇郭冰鑫樊宗义徐宏毛红奎张国伟张文达李忠华
Owner 北京北方恒利科技发展有限公司