Composite metal foaming powder material based on selective laser melting forming technology and its preparation method

A composite metal and laser melting technology, which is applied in metal processing equipment, additive manufacturing, additive processing, etc., can solve the problem of harsh preparation conditions, lack of proper guarantee of pore uniformity, and restrictions on the types and development of porous metal materials. and other problems, to achieve the effect of reducing the amount of bubble escape, ensuring stability, and increasing the amount of foaming

Active Publication Date: 2022-04-01
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] It can be seen from this that all kinds of deposition methods not only have harsh preparation conditions, but also require corresponding post-treatment processes, which cannot effectively remove the impurities made into porous metals, and the uniformity of pores cannot be guaranteed.
These limit the types and development of porous metal materials, which is not conducive to the research and application of porous metal materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Take by weighing azodicarbonamide (Foamer ADC) 650g, dinitrosopentamethylenetetramine (DPT) 350g, place in the planetary ball mill after mixing, ball mill with the rotating speed of 30r / min 30min, cross 325 mesh sieves, An organic mixed blowing agent is obtained.

[0046] Weigh 300g each of sodium carbonate and magnesium carbonate powders, mix them, and ball mill them in a planetary ball mill for 30 minutes at a speed of 30r / min, and pass through a 325-mesh sieve to obtain a mixed inorganic salt foaming agent.

[0047] Weigh 13 kg of AlSi10Mg alloy powder, place it in a planetary ball mill, ball mill it at a speed of 50 r / min for 50 min, and pass through a 325-mesh sieve.

[0048] Weigh 900 g of the sieved organic mixed foaming agent, 450 g of mixed inorganic salt foaming agent, and 10 kg of AlSi10Mg alloy powder, mix and ball mill in a ball mill jar. The ball mill adopts the alternate operation mode of ball milling at a speed of 20r / min for 30 minutes and a pause of 1...

Embodiment 2

[0062] Weigh azodicarbonamide (Foamer ADC) 700g, dinitrosopentamethylenetetramine (DPT) 400g, mix and place in a planetary ball mill, ball mill with a speed of 50r / min for 50min, pass through a 325 mesh sieve, An organic mixed blowing agent is obtained.

[0063] Weigh 500g each of sodium carbonate and magnesium carbonate powders, mix them and ball mill them in a planetary ball mill for 50min at a speed of 50r / min, pass through a 325 mesh sieve to obtain a mixed inorganic salt foaming agent.

[0064] Weigh 15kg of Ti6Al4V alloy powder, place it in a planetary ball mill, ball mill at a speed of 50r / min for 50min, and pass through a 325-mesh sieve.

[0065] Weigh 900g of the sieved organic mixed foaming agent, 940g of mixed inorganic salt foaming agent, and 10kg of Ti6Al4V alloy powder in a ball milling tank, and use the alternating operation mode of ball milling at a speed of 25r / min for 50min and pause for 20min to circulate ball milling and mix 15 times .

[0066] After ball...

Embodiment 3

[0075] Take by weighing 1200g of azodicarbonamide (Foamer ADC) and 400g of dinitrosopentamethylenetetramine (DPT), put them in a planetary ball mill after mixing, ball mill for 50min at a speed of 70r / min, and pass through a 325 mesh sieve. An organic mixed blowing agent is obtained.

[0076] Weigh 800g each of sodium carbonate and magnesium carbonate powders, mix them and ball mill them in a planetary ball mill for 50min at a speed of 50r / min, pass through a 325 mesh sieve to obtain a mixed inorganic salt foaming agent.

[0077] Weigh 19kg of 316L stainless steel powder, place it in a planetary ball mill, ball mill it at a speed of 60r / min for 55min, and pass through a 325-mesh sieve.

[0078] Weigh 900g of sieved organic mixed foaming agent, 950g of mixed inorganic salt foaming agent, and 10kg of 316L stainless steel powder in a ball mill tank, and use the alternate operation mode of ball milling at a speed of 30r / min for 60min and pause for 30min to circulate ball milling a...

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Abstract

The invention relates to a composite metal foaming powder material based on selective laser melting forming technology and a preparation method thereof, which uses various metal powders capable of selective laser melting forming to prepare porous metal materials as base materials, and adds metal 8-35% solid organic foaming agent and 3-15% mixed inorganic salt foaming agent by powder mass to obtain composite metal powder, then fully impregnating the composite metal powder with volatile organic foaming agent solution, and drying to obtain Composite metal foaming powder material. The composite metal foaming powder material of the present invention is easy to generate dense and uniform gas at high temperature, and the porous metal material with good stability and uniform pore distribution can be prepared by utilizing the selective laser melting forming technology.

Description

technical field [0001] The invention belongs to the technical field of light material preparation, and relates to a metal foaming powder material and a preparation method of the metal foaming powder material. The metal foaming powder material of the invention is used for preparing porous metal materials by selective laser melting forming technology. Background technique [0002] Porous metal materials are widely used in the fields of automobiles and aerospace because of their low specific gravity and high absorbing performance. [0003] At present, the preparation of porous metal materials mainly includes molten metal foaming method, metal powder sintering method and deposition method. But these methods all have certain deficiencies. [0004] The molten metal foaming method not only needs to add a high melting point solid particle viscosifier in order to increase the viscosity of the molten metal, but also needs to control the appropriate stirring speed during the preparat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F1/10B22F10/28B33Y70/10
CPCB22F3/1125B33Y70/00B22F2999/00B22F1/10B22F10/34B22F10/28Y02P10/25
Inventor 赵占勇霍鹏丞白培康张震李晓峰王宇李忠华李玉新刘斌王建宏
Owner ZHONGBEI UNIV
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