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Preparation method for metal part

A technology for metal materials and parts, applied in the field of preparation of metal parts, can solve the problem that the processing method is not suitable for the production of small batches, customized and complex shapes of metal parts, shorten the manufacturing cycle, simplify the process, The effect of improving manufacturing efficiency

Active Publication Date: 2016-06-15
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. The method can be used to prepare a variety of difficult-to-process metal materials with special properties or special purposes, and is especially suitable for high-speed steel, die steel, and ultra-high-strength steel. , Nickel alloy, high temperature alloy, 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, urethane acrylate, polyester acrylate, polyester acrylic resin, or amino acrylic resin. The volume ratio of the metal powder to the organic binder is 3:7-7:3. In order to ensure the good fluidity of the slurry, avoid exposure to light during the mixing process and storage process, especially avoid ultraviolet light, and avoid mixing t...

Embodiment 1

[0039] A preparation method of molybdenum-tungsten alloy parts specifically includes 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 to improve the performance of unsaturated polyester. Elasticity, reduce volume shrinkage and increase the plasticity of polyester. The glycol is ethylene glycol.

[0042] The specific synthesis process is as follows: add dibasic acid, ethylene glycol and a proper amount of polymerization inhibitor into the reactor, pour in nitrogen, stir and heat up to 160℃ and reflux, measure the acid value to about 200mgKOH / g, start to effluent, and heat up to 175 ~200℃, when the acid value reaches the set value, stop the reaction, cool to about 80℃, add 20%-30% active diluent (styrene or acrylic active diluent) and proper amount of polymerization inhibito...

Embodiment 2

[0049] A method for preparing niobium-tungsten alloy parts, specifically including the following steps:

[0050] (1) Raw material preparation

[0051] Mix 99% niobium-tungsten alloy powder, 0.5% iron powder and 0.5% carbon powder according to the volume ratio to obtain a mixed powder. The particle size of the iron powder and carbon powder are both 0.2 microns, and then the mixed powder is added to epoxy under dark conditions. Acrylic resin and fully mixed, the volume ratio of mixed powder and epoxy acrylic resin is 1:1. Then add the defoamer metal soap to it and stir slowly. After the bubbles in the slurry disappear, remove the floating 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 billet manufacturing

[0053] Load the mixed slurry into a 3D printing light-curing molding equipment, using a controllable ultraviolet light beam, using surface exposure,...

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Abstract

The invention discloses a preparation method for a metal part. The preparation method comprises the following steps that 1, metal powder is taken, added with an organic binder under the dark condition and uniformly mixed, then an antifoaming agent is added into the metal powder and uniformly mixed, and after bubbles fade away, surface impurities are removed, so that mixed slurry is obtained; 2, the mixed slurry is put into 3 D printing forming equipment to be printed layer by layer by utilizing controllable ultraviolet light beams, through the mode of surface exposure or spot scanning and according to a three-dimensional model of the part, and hence a metal part rough blank is prepared; 3, the metal part rough blank is subjected to low-temperature degreasing treatment, so that the organic binder in the rough blank evaporates and overflows; and 4, hot isostatic pressing treatment is conducted on the metal part rough blank, and therefore the compact metal part is obtained. According to the preparation method for the metal part, the principle of light curing rapid prototyping is adopted, the shape of the part is unrestrained, the process is simplified, the manufacturing cycle is shortened, and the product compactness is good.

Description

Technical field [0001] The invention belongs to the technical field of material preparation, and specifically relates to a method for preparing a metal material part. Background technique [0002] The combination of casting, forging, and welding machining methods has always been the main processing and manufacturing method of traditional metal products, which can solve the high-precision manufacturing problems of most commonly used and easy-to-process materials. However, some metal materials with special properties or special purposes, such as high-speed steel, die steel, ultra-high-strength steel, nickel alloys, high-temperature alloys, tungsten alloys, molybdenum alloys, etc., due to the special properties of the materials, make traditional processing and manufacturing methods impossible Or it is difficult to solve the manufacturing / processing problem. This patent provides a convenient method for processing and manufacturing metal parts. [0003] Traditional casting, forging, we...

Claims

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Application Information

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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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