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A method for forming guide wheels based on 3D printing composite cemented carbide powder

A hard alloy and 3D printing technology, applied in the field of guide wheels, can solve the problems of large roughness in the horizontal direction, poor energy concentration performance, and failure to obtain the desired shape, etc., to achieve fast forming speed, improve precision, and increase service life Effect

Active Publication Date: 2018-04-10
安徽东方新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The application of plasma beam rapid prototyping technology to the 3D printing of metal parts is still in the basic research stage, and there are still many limitations. For example, the energy concentration performance of plasma beam is still poor compared with laser, which leads to near-net shape preparation When the workpiece is stacked in multiple layers, the upper layer tends to flow from the edge of the stacked layer, resulting in large roughness in the horizontal and vertical directions, and even the desired shape cannot be obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1, ingredients: 40% Cr12MoV powder, 28% 1Cr18Mn8Ni5N powder and 18% 1Cr18Ni9Ti powder, the balance being Fe powder;

[0027] A. Preparation of Cr12MoV powder: Put Cr12MoV in a ball mill and ball mill for 30h-50h under the protection of hydrogen to form Cr12MoV powder of 5-9μm;

[0028] B 1Cr18Mn8Ni5N: Put the 1Cr18Mn8Ni5N powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form 1Cr18Mn8Ni5N powder of 5-9μm;

[0029] C 1Cr18Ni9Ti: Put the 1Cr18Ni9Ti powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form a 5-9μm 1Cr18Ni9Ti powder;

[0030] Step 2, wet milling: mix 40% Cr12MoV powder, 28% 1Cr18Mn8Ni5N powder and 18% 1Cr18Ni9Ti powder prepared in step 1 and add Fe powder, use liquid ethanol as the ball milling medium, add titanium tetrachloride during the ball milling process, and use the ball mill The rotating speed is 90-100r / min, and the ball milling time is 10-30min;

[0031] Step 3, sievin...

Embodiment 2

[0035] A method for forming a guide wheel based on 3D printing composite cemented carbide powder, the steps are as follows:

[0036] Step 1, ingredients: 43% of Cr12MoV powder, 31% of 1Cr18Mn8Ni5N powder and 22% of 1Cr18Ni9Ti powder, and the balance is 15% of Fe powder;

[0037] A. Preparation of Cr12MoV powder: Put Cr12MoV in a ball mill and ball mill for 30h-50h under the protection of hydrogen to form Cr12MoV powder of 5-9μm;

[0038] B 1Cr18Mn8Ni5N: Put the 1Cr18Mn8Ni5N powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form 1Cr18Mn8Ni5N powder of 5-9μm;

[0039] C 1Cr18Ni9Ti: Put the 1Cr18Ni9Ti powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form a 5-9μm 1Cr18Ni9Ti powder;

[0040] Step 2, wet milling: mix 40%-45% Cr12MoV powder, 28%-35% 1Cr18Mn8Ni5N powder and 18%-25% 1Cr18Ni9Ti powder into Fe powder, use liquid ethanol as ball milling medium, and ball mill Titanium tetrachloride is added in t...

Embodiment 3

[0045] A method for forming a guide wheel based on 3D printing composite cemented carbide powder, the steps are as follows:

[0046] Step 1, ingredients: 40% Cr12MoV powder, 30% 1Cr18Mn8Ni5N powder and 25% 1Cr18Ni9Ti powder, the balance being 5% Fe powder;

[0047] A. Preparation of Cr12MoV powder: Put Cr12MoV in a ball mill and ball mill for 30h-50h under the protection of hydrogen to form Cr12MoV powder of 5-9μm;

[0048] B 1Cr18Mn8Ni5N: Put the 1Cr18Mn8Ni5N powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form 1Cr18Mn8Ni5N powder of 5-9μm;

[0049] C 1Cr18Ni9Ti: Put the 1Cr18Ni9Ti powder in a ball mill, and ball mill it for 30h-50h under the protection of hydrogen to form a 5-9μm 1Cr18Ni9Ti powder;

[0050] Step 2, wet milling: mix 40%-45% Cr12MoV powder, 28%-35% 1Cr18Mn8Ni5N powder and 18%-25% 1Cr18Ni9Ti powder into Fe powder, use liquid ethanol as ball milling medium, and ball mill Titanium tetrachloride is added in the process, th...

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Abstract

The invention discloses a method for forming a guide wheel based on 3D printing composite cemented carbide powder. Including ingredients: 40%-45% Cr12MoV powder, 28%-35% 1Cr18Mn8Ni5N powder and 18%-25% 1Cr18Ni9Ti powder, the balance being Fe powder; step two, wet grinding; step three, sieving and drying; step four , 3D printer molding. The metal 3D printer process used in the present invention is used to prepare the guide wheel. By mixing Cr12MoV powder, 1Cr18Mn8Ni5N powder and 1Cr18Ni9Ti powder and adding Fe powder to form the substrate for 3D printing parts, it has the advantages of one-time molding, structural strength, toughness and microscopic crystal formation. The relative density reaches 99%, which effectively improves the service life of parts, has fast forming speed, and improves the precision of profile forming.

Description

technical field [0001] The invention belongs to the technical field of guide wheels, in particular to a method for forming guide wheels based on 3D printing composite cemented carbide powder. Background technique [0002] The guide wheel is an important spare part that consumes a lot in the hot-rolled bar production line, and is a key component in the rolling guide assembly, which affects the technical and economic indicators such as the operating rate of the rolling mill. Many guide parts used have insufficient heat resistance, such as steel sticking, and some process parts have poor wear resistance and thermal fatigue performance, which affects the service life and quality of rolled products. [0003] The physical essence of hardness wear is a special form of fracture process, which occurs on the surface and subsurface of the worn parts. When considering the hardness value, it cannot simply be considered that the higher the hardness, the better the wear resistance, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F1/00B22F9/04
CPCB22F1/0003B22F9/04B22F2009/043B22F10/00B22F10/34B22F10/28Y02P10/25
Inventor 吴鹏张有德吴翠凤常焰平胡峰史宣菊
Owner 安徽东方新材料有限公司
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