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A kind of preparation method of metal material product

A technology of metal materials and parts, which is applied in the field of preparation of metal parts, can solve the problems that the processing method is not suitable for small batches, customization and complex shapes of metal parts, so as to shorten the manufacturing cycle and improve manufacturing efficiency , The effect of simplifying the process

Active Publication Date: 2018-11-23
铂力特(江苏)增材制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing metal parts, to solve the problem that traditional casting, forging, welding and other processing methods are not suitable for the production of small batches, customization and complex shapes of metal parts

Method used

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Examples

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Effect test

preparation example Construction

[0028] The invention provides a method for preparing metal material parts, which can be used to prepare a variety of difficult-to-process metal materials with special properties or special uses, especially for high-speed steel, die steel, and ultra-high-strength steel , nickel alloy, superalloy, tungsten alloy, molybdenum alloy, titanium alloy and other metal parts. The specific preparation method is as follows:

[0029] Step 1, raw material preparation

[0030] Add the spherical metal powder to the organic binder and mix well. The organic adhesive is preferably epoxy acrylic resin, unsaturated polyester resin, polyurethane acrylate, polyester acrylate, polyester acrylic resin or aminoacrylic resin. The volume ratio of the metal powder to the organic binder is 3:7-7:3. In order to ensure good fluidity of the slurry, the mixing process and storage process should avoid exposure to light, especially avoid ultraviolet light, and try to avoid mixing too much impurity oxygen duri...

Embodiment 1

[0039] A method for preparing a molybdenum-tungsten alloy part, specifically comprising the following steps:

[0040] (1) Raw material preparation

[0041] The synthesis method of unsaturated polyester resin is to mix maleic acid and fumaric acid 1:1 through unsaturated dibasic acid, and add a certain amount of phthalic anhydride and succinic acid at the same time, which can improve the performance of unsaturated polyester. Elasticity, reduce volume shrinkage, increase plasticity of polyester. Dihydric alcohol adopts ethylene glycol.

[0042] The specific synthesis process is as follows: add dibasic acid, ethylene glycol and an appropriate amount of polymerization inhibitor into the reactor, feed nitrogen gas, stir and heat up to 160°C for reflux, measure the acid value to about 200mgKOH / g, start to discharge water, and raise the temperature to 175 ~200°C, when the acid value reaches the set value, stop the reaction, cool down to about 80°C, add 20%~30% reactive diluent (sty...

Embodiment 2

[0049] A method for preparing a niobium-tungsten alloy part, specifically comprising the following steps:

[0050] (1) Raw material preparation

[0051]According to the volume ratio, mix 99% niobium-tungsten alloy powder, 0.5% iron powder and 0.5% carbon powder to obtain a mixed powder. Acrylic resin and mix thoroughly, the volume ratio of mixed powder to epoxy acrylic resin is 1:1. Then add defoamer metal soap to it, stir slowly, after the bubbles inside the slurry subside, remove the floating matter or residue on the surface of the slurry to obtain a uniform and bubble-free mixed slurry; the defoamer accounts for 1% of the total volume of the mixed slurry %.

[0052] (2) Rough blank manufacturing

[0053] Put the mixed slurry into the 3D printing photo-curing molding equipment, use the controllable ultraviolet light beam, adopt the method of surface exposure, and print layer by layer according to the three-dimensional model of the part, the layer thickness is 60 μm, the w...

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Abstract

The invention discloses a method for preparing a metal material part, which comprises the following steps: taking metal powder, adding an organic adhesive to it and mixing it evenly under the condition of avoiding light, then adding a defoaming agent and mixing it evenly, and waiting for the bubbles to subside Remove surface impurities to obtain mixed slurry; put the mixed slurry into 3D printing molding equipment, use controllable ultraviolet light beams, adopt surface exposure or point scanning methods, and print layer by layer according to the 3D model of the part to make rough metal parts. Blank; the low-temperature degreasing treatment of the rough metal parts, so that the organic binder in the rough body evaporates and overflows; and then hot isostatic pressing treatment to obtain dense metal parts. The method utilizes the light-curing rapid prototyping principle, the shape of the part is not restricted, the process is simplified, the manufacturing cycle is shortened, and the product has better compactness.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing metal material parts. Background technique [0002] The method of casting, forging, welding and mechanical processing has always been the main processing and manufacturing method of traditional metal products, which can solve the high-precision manufacturing problems of most common and easy-to-process materials. However, some metal materials with special properties or special uses, such as: high-speed steel, die steel, ultra-high-strength steel, nickel alloy, high-temperature alloy, tungsten alloy, molybdenum alloy, etc., due to the special properties of the material, traditional processing and manufacturing methods cannot Or it is difficult to solve the manufacturing / processing problem, this patent provides a convenient method for processing and manufacturing metal material parts. [0003] Traditional casting, forging, welding and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F3/15B33Y10/00
CPCB22F3/105B22F3/15B33Y10/00B22F2998/10B22F1/10B22F3/22Y02P10/25
Inventor 薛蕾赵晓明王俊伟杨东辉
Owner 铂力特(江苏)增材制造有限公司
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