Application of sago as pore former, pore former and method for preparing foam metal through pore former

A foam metal and pore-forming agent technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of poor pore-forming effect, difficult to remove, high cost of pore-forming agent, etc., and achieve low price, low equipment requirements, cheap effect

Inactive Publication Date: 2018-12-18
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: the cost of the pore-forming agent used in the existing preparation of foamed metal is high, the pore-forming effect is not good, and it is difficult to remove.

Method used

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  • Application of sago as pore former, pore former and method for preparing foam metal through pore former

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 adopts technical scheme of the present invention to prepare foamed steel

[0045] Prepare foam steel according to the following steps:

[0046]A. Put titanium powder with a particle size of 200 mesh and a purity of 99.9% and spherical sago particles with a particle size of about 4mm at a volume fraction of 2:3, and put them into a V-type mixer and mix them for 1 hour; during the mixing process, add Absolute ethanol, the mass ratio of absolute ethanol and the mixture is 5:95.

[0047] B. Put the uniformly mixed powder into a steel mold and compact it into a billet. The one-way pressure is 200Mpa, the holding time is 5min, and the mold is demoulded and dried.

[0048] C. Pre-sinter the dry blank, in the atmosphere of high-purity argon, raise it to 550°C at a rate of 10°C / min, and keep it for 21 hours. Next, raise it to 1000°C at the same rate, keep it for 2 hours, and cool with the furnace , to obtain foamed steel with a pore size of 3.6mm and a porosity of...

Embodiment 2

[0049] Embodiment 2 adopts technical scheme of the present invention to prepare foamed titanium

[0050] Foam titanium is prepared according to the following steps:

[0051] A. Put titanium powder with a particle size of 100 mesh and a purity of 99.9% and spherical sago particles with a particle size of about 0.2mm at a volume fraction of 3:7, and mix them in a V-type mixer for 1 hour; during the mixing process Add dehydrated ethanol, the mass ratio of dehydrated ethanol and mixture is 4:96.

[0052] B. Put the uniformly mixed powder into a steel mold and compact it into a billet. The one-way pressure is 200Mpa, the holding time is 4min, and the mold is demoulded and dried.

[0053] C. Pre-sinter the dry billet, in the atmosphere of high-purity argon, raise it to 520°C at a rate of 7°C / min, keep it for 3 hours, and then raise it to 1200°C at the same rate, keep it for 2 hours, and cool with the furnace A titanium foam with a pore diameter of 0.15 mm and a porosity of 73.26% ...

Embodiment 3

[0054] Embodiment 3 adopts technical scheme of the present invention to prepare foamed copper

[0055] Prepare foamed copper according to the following steps:

[0056] A. Put the copper powder with a particle size of 300 mesh and a purity of 99.9% and spherical sago particles with a particle size of about 0.3mm at a volume fraction of 1:4, and put them into a V-shaped mixer and mix them for 1 hour; during the mixing process Add absolute ethanol, and the mass ratio of absolute ethanol and the mixture is 3:97.

[0057] B. Put the uniformly mixed powder into a steel mold and compact it into a billet. The one-way pressure is 100Mpa, the holding time is 3min, and the mold is demoulded and dried.

[0058] C. Pre-sinter the dry billet, raise it to 480°C at a rate of 4°C / min in a high-purity argon atmosphere, and keep it for 1 hour. Next, raise it to 900°C at the same rate, hold it for 2 hours, and cool it with the furnace. A copper foam with a pore diameter of 0.25mm and a porosity...

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Abstract

The invention belongs to the technical field of preparation of foam metal materials, and particularly relates to application of sago as a pore former, a pore former and a method for preparing foam metal through the pore former. In view of the problems that existing pore formers used for preparing foam metal are high in cost, poor in pore-forming effect, difficult to move and the like, the invention provides the application of sago as the pore former during preparation of foam metal, and further provides the pore former and the method for preparing the foam metal. Metal powder and the pore former of sago are added into a binder to be mixed, then compacted into a billet, demolded and dried; pre-sintering is conducted; and the foam metal is obtained through sintering. The pore former of sagois good in pore-forming effect, easy to remove, is safe and environmentally friendly. The method for preparing foam materials through sago is simple in process, high in cost performance, free of environment pollution, prepared foam steel, foam titanium and foam copper have the advantages of being controllable in pore size, porosity, pore shape and the like, and the pore former and method have goodapplication prospects in the aspects of energy absorption control, biology and filtration separation.

Description

technical field [0001] The invention belongs to the technical field of foam metal material preparation, and in particular relates to the use of sago as a pore-forming agent, the pore-forming agent and a method for preparing foam metal. Background technique [0002] Metal foam is a new structure-functional material consisting of a rigid skeleton and internal pores, with excellent physical properties and good mechanical properties. It has the advantages of light weight, large specific surface area, good thermal conductivity and heat dissipation, good energy absorption and vibration reduction performance, good noise reduction and noise reduction effect, high electromagnetic shielding performance, and good permeability. It is widely used in filtration separation, fluid control, and energy absorption. , noise reduction, biomedicine, catalyst carrier and other fields. [0003] At present, the preparation methods of metal foam mainly include foaming agent foaming method, gas injec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08B22F1/00B22F3/02B22F3/11
CPCB22F3/02B22F3/1121B22F1/10
Inventor 谢波范亚卓穆天柱
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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