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Rapid forming method of metal ceramic part

A technology for cermet and parts, applied in the field of rapid prototyping of cermet parts, can solve problems such as the production of cermet parts that are not suitable for small batches and complex shapes, achieve plasticity and complexity, improve comprehensive mechanical properties, and high density. Effect

Inactive Publication Date: 2017-09-05
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rapid prototyping method for metal-ceramic parts, which solves the problem that the existing preparation method is not suitable for the production of small batches and complex-shaped metal-ceramic parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for WC-Co parts, specifically comprising the following steps:

[0037] 1. Raw material preparation

[0038] Select 800g of tungsten carbide (WC) powder, the powder particle size is between 0.1μm and 1μm, d 50 =0.7μm, choose cobalt (Co) powder 120g, the powder particle size is between 0.2μm~0.8μm, d 50 = 0.6 μm. Select 10g of VC powder and Cr 3 C 2Powder, the mixing ratio is 1:2, 20g of quaternary ammonium acetate, VC powder, WC powder and Co powder are mixed, the mixed powder and dispersant are evenly divided into three parts, and one part is put into a ball mill for Ball milling, the time is 60min, add the remaining powder one by one, mix evenly, every time the powder is added, the ball milling time is increased by 60min.

[0039] Select 200g of urethane acrylate and epoxy acrylate monomer mixture, mixing ratio (1:1), select 13g of tetrabasic ammonium acetate dispersant, and gradually add solid powder and dispersant to urethane acrylate and ep...

Embodiment 2

[0046] A preparation method for WC-Co parts, specifically comprising the following steps:

[0047] 1. Raw material preparation

[0048] Select 700g of tungsten carbide (WC) powder, the powder particle size is between 0.1μm and 1μm, d 50 =0.7μm, choose cobalt (Co) powder 150g, the powder particle size is between 0.2μm~0.8μm, d 50 = 0.6 μm. Select 7.0g of VC powder, 15g of quaternary ammonium acetate, mix VC powder, WC powder and Co powder, divide the mixed powder and dispersant into three parts, take one part and put it into a ball mill for ball milling, The time is 60 minutes, add the remaining powder one by one, mix evenly, and increase the ball milling time by 60 minutes each time the powder is added.

[0049] Select 250g of polyurethane acrylate and phenyl glycidyl ether monomer mixture, mixing ratio (1:1), select 9g of tetrabasic ammonium acetate dispersant, and gradually add solid powder and dispersant to polyurethane acrylate and epoxy acrylic acid In the ester mixtu...

Embodiment 3

[0056] A preparation method for TiC-Mo-Ni parts, specifically comprising the following steps:

[0057] 1. Raw material preparation

[0058] Select 500g of titanium carbide (TiC) powder, the powder particle size is between 0.1 μm and 1 μm, d 50 =0.8μm, choose molybdenum (Mo) powder 42g, the powder particle size is between 0.2μm~0.8μm, d 50 =0.6μm, select nickel (Ni) powder 169g, the powder particle size is between 0.1μm~0.9μm, d 50 =0.7μm, select tungsten carbide (WC) powder 127g, the powder particle size is between 0.1μm and 0.7μm, d 50 =0.6μm, select 8g of carbon (C) powder, the powder particle size is between 0.1μm and 1μm, d 50 = 0.5 μm. Select 8g of VC powder and NbC powder, the mixing ratio is 1:2, 16g of hexenyl bis stearamide dispersant, mix TiC, Mo, Ni, WC, C, VC and NbC powder, the mixed powder and The dispersant is divided into four parts equally, and one part is put into a ball mill for ball milling for 60 minutes, and the remaining powders are added in turn an...

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Abstract

The invention discloses a rapid forming method of a metal ceramic part. Metal powder and ceramic powder are mixed, a sintering aid and a dispersing agent are added, a mixture is added into a photocuring monomer solvent after ball grinding, then a dispersing agent, a photoinitiator and a defoaming agent are added, uniform mixing is carried out, and slurry is obtained; the prepared slurry is cured and printed point by point and layer by layer through ultraviolet light beams according to a three-dimensional model of the part, and a cured-formed metal ceramic blank is obtained; and finally the blank is put into a sintering furnace to be degreased and sintered, and metal ceramic is obtained. According to the method, the limitation of conventional machined part shapes is avoided, the machining duration is shortened, and cost is reduced. Meanwhile, through combination with the specific degreasing and sintering process steps, it is ensured that the formed part has high density, and the comprehensive mechanical property of the formed part is improved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a rapid prototyping method for metal ceramic parts. Background technique [0002] Cermet is a composite material that integrates the properties of metal and ceramics. It has the high temperature resistance, high strength and oxidation resistance of ceramic materials, as well as the strength, toughness and bending resistance of metal materials. These excellent properties make cermets widely used in gas turbine blades. , Jet engine nozzles, internal combustion engine valve seats, stamping dies, temperature measuring components, wear-resistant bearings and high-speed cutting tools, etc. are widely used. [0003] At present, the forming methods of cermet parts mainly include powder metallurgy method, which uses powder as raw material, presses green body, and combines sintering technology to produce parts products of cermet materials. [0004] However, the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F1/00B33Y10/00
CPCB33Y10/00B22F10/00B22F1/107B22F10/34B22F10/12Y02P10/25
Inventor 赵晓明许海嫚徐天文
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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