A light-cured 3D printing nanoparticle-reinforced metal part and its preparation method

Abstract

The invention relates to a light-cured 3D printing nanoparticle-reinforced metal piece and a preparation method thereof. The preparation method includes the following steps: after mixing amorphous powder and a coating agent, adding a coupling agent and a coating agent to it at a set temperature The metal powder is stirred to carry out the coating step; the product obtained in the coating step is post-treated to obtain an amorphous layer coated metal powder material; the amorphous layer is coated with the metal powder material, photosensitive resin, ultraviolet photoinitiator, and dispersant Prepare light-curable 3D printing paste; use light-curable 3D printer to carry out light-curing molding treatment on light-curable 3D printing paste to obtain light-curable 3D printing blank; degrease and sinter light-curable 3D printing blank to obtain light-curable 3D printing paste Curing 3D printed nanoparticle-reinforced metal parts. The invention improves the dispersibility of the metal powder in the photosensitive resin slurry by making the metal powder into an amorphous layer-coated metal powder material with a powdery core-shell structure, and prepares a light-cured 3D printing nanoparticle-reinforced metal piece.

Description

technical field

[0001] The invention relates to the technical field of 3D printing additive manufacturing, in particular to a light-cured 3D printing nanoparticle-reinforced metal part and a preparation method thereof. Background technique

[0002] At present, my country's machinery industry is accelerating the transformation of the development mode, and the production mode is striving to change to energy saving, emission reduction, and green manufacturing. The traditional subtractive manufacturing is developing in the direction of additive manufacturing. The near-net shape manufacturing technology of additive manufacturing has attracted widespread attention. Metal additive manufacturing technology mainly focuses on selected area laser melting (SLM), electron beam melting (EBM) and other technologies, but the above-mentioned processes cause thermal cracks or thermal stress material defects due to the huge energy input to the material during the preparation process. . In ord...

Examples

Embodiment 1

[0066] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0067] Preparation of amorphous layer coating metal powder material: first with 250g particle diameter FeCrMoCB amorphous powder (wherein, the mass fraction of Fe is 57%, the mass fraction of Cr is 23%, the mass fraction of Mo is 18%, C The mass fraction of B is 1.5%, the mass fraction of B is 0.5%) and 100g of polyacrylic acid are placed in a beaker and mixed and heated to 50 ° C, and after mechanical stirring for 60 minutes, the temperature is raised to 100 ° C, while mechanical stirring Slowly add 50g of benzoyl peroxide and 700g of FeCrTiAlWMoTaCBZr metal powder (wherein, the massfraction of Fe is 58.25, the massfraction of Cr is 21%, the massfraction of Ti is 8%, the massfraction of Al is 10 microns) The mass fraction is 4.5%, the mass fraction of W is 4%, the mass fraction of Mo is 2%, the mass fraction of Ta is 2%, the mass fra...

Embodiment 2

[0075] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0076] Preparation of amorphous layer coated metal powder material: first 150g of FeAlNbB amorphous powder with particle diameter of 120nm (wherein, the mass fraction of Fe is 71.5%, the mass fraction of Al is 24%, the mass fraction of Nb is 4%, B The mass fraction is 0.5%) and 150g of chloroacrylic acid are mixed in a beaker and heated to 60°C, and after 90 minutes of mechanical stirring, the temperature is raised to 90°C, and 100g of benzene peroxide is slowly added to it while mechanically stirring tert-butyl formate and 600g particle diameter are the FeTiAlNbCB metal powder (alloy powder of 30 microns, wherein, the massfraction of Fe is 60%, the massfraction of Ti is 18%, the massfraction of Al is 17%, the massfraction of Nb is 4%, the mass fraction of C is 0.5, and the mass fraction of B is 0.5%), and the coating step is carried ...

Embodiment 3

[0084] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0085] Preparation of amorphous layer coated metal powder material: first 200g of FeCrSiBMn amorphous powder with a particle diameter of 100nm (the mass fraction of Fe is 69.5%, the mass fraction of Cr is 24%, the mass fraction of Si is 4%, the mass fraction of B Fraction is 0.5%, the mass fraction of Mn is 2%) and 120g polyacrylic acid are placed in the beaker and mixed and heated up to 55 ℃, and after mechanical stirring for 100 minutes, then raise the temperature to 80 ℃, while mechanical stirring Slowly add 80g of benzoyl peroxide and 600g of FeCrAlSiMoBMn metal powder (alloy powder, wherein the massfraction of Fe is 58%, the massfraction of Cr is 21%, the massfraction of Al is 17%, Si The mass fraction of Mo is 2%, the mass fraction of Mo is 1%, the mass fraction of B is 0.5%, and the mass fraction of Mn is 0.5%), and the coating...

technical field

[0001] The invention relates to the technical field of 3D printing additive manufacturing, in particular to a light-cured 3D printing nanoparticle-reinforced metal part and a preparation method thereof. Background technique

[0002] At present, my country's machinery industry is accelerating the transformation of the development mode, and the production mode is striving to change to energy saving, emission reduction, and green manufacturing. The traditional subtractive manufacturing is developing in the direction of additive manufacturing. The near-net shape manufacturing technology of additive manufacturing has attracted widespread attention. Metal additive manufacturing technology mainly focuses on selected area laser melting (SLM), electron beam melting (EBM) and other technologies, but the above-mentioned processes cause thermal cracks or thermal stress material defects due to the huge energy input to the material during the preparation process. . In ord...

Examples

Embodiment 1

[0066] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0067] Preparation of amorphous layer coating metal powder material: first with 250g particle diameter FeCrMoCB amorphous powder (wherein, the mass fraction of Fe is 57%, the mass fraction of Cr is 23%, the mass fraction of Mo is 18%, C The mass fraction of B is 1.5%, the mass fraction of B is 0.5%) and 100g of polyacrylic acid are placed in a beaker and mixed and heated to 50 ° C, and after mechanical stirring for 60 minutes, the temperature is raised to 100 ° C, while mechanical stirring Slowly add 50g of benzoyl peroxide and 700g of FeCrTiAlWMoTaCBZr metal powder (wherein, the massfraction of Fe is 58.25, the massfraction of Cr is 21%, the massfraction of Ti is 8%, the massfraction of Al is 10 microns) The mass fraction is 4.5%, the mass fraction of W is 4%, the mass fraction of Mo is 2%, the mass fraction of Ta is 2%, the mass fra...

Embodiment 2

[0075] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0076] Preparation of amorphous layer coated metal powder material: first 150g of FeAlNbB amorphous powder with particle diameter of 120nm (wherein, the mass fraction of Fe is 71.5%, the mass fraction of Al is 24%, the mass fraction of Nb is 4%, B The mass fraction is 0.5%) and 150g of chloroacrylic acid are mixed in a beaker and heated to 60°C, and after 90 minutes of mechanical stirring, the temperature is raised to 90°C, and 100g of benzene peroxide is slowly added to it while mechanically stirring tert-butyl formate and 600g particle diameter are the FeTiAlNbCB metal powder (alloy powder of 30 microns, wherein, the massfraction of Fe is 60%, the massfraction of Ti is 18%, the massfraction of Al is 17%, the massfraction of Nb is 4%, the mass fraction of C is 0.5, and the mass fraction of B is 0.5%), and the coating step is carried ...

Embodiment 3

[0084] This embodiment prepares a light-cured 3D printing nanoparticle-reinforced metal part, which specifically includes the following steps:

[0085] Preparation of amorphous layer coated metal powder material: first 200g of FeCrSiBMn amorphous powder with a particle diameter of 100nm (the mass fraction of Fe is 69.5%, the mass fraction of Cr is 24%, the mass fraction of Si is 4%, the mass fraction of B Fraction is 0.5%, the mass fraction of Mn is 2%) and 120g polyacrylic acid are placed in the beaker and mixed and heated up to 55 ℃, and after mechanical stirring for 100 minutes, then raise the temperature to 80 ℃, while mechanical stirring Slowly add 80g of benzoyl peroxide and 600g of FeCrAlSiMoBMn metal powder (alloy powder, wherein the massfraction of Fe is 58%, the massfraction of Cr is 21%, the massfraction of Al is 17%, Si The mass fraction of Mo is 2%, the mass fraction of Mo is 1%, the mass fraction of B is 0.5%, and the mass fraction of Mn is 0.5%), and the coating...

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