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Casting-penetrating method of Al2O3 particle surface reinforced steel-base composite material

A particle surface and composite material technology, which is applied in the field of casting infiltration and casting, to achieve the effect of simple composite process and low cost

Active Publication Date: 2012-03-07
JIANGSU GREENHUB TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, self-propagating technology is used to form Al on the inner surface of the steel pipe. 2 o 3 The method of ceramics, however, uses the method of casting infiltration to form Al on the surface of the non-rotating body 2 o 3 The technology of ceramic cladding has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a kind of Al 2 o 3 The casting infiltration method of particle surface reinforced steel matrix composite material is carried out according to the following steps,

[0021] 1) Proportioning components: Al with particle size of 120-150 mesh and 200-320 mesh 2 o 3 Particles, wherein 120-150 mesh accounts for 30% in weight percentage, and 200-320 mesh accounts for 70%; the binder is high-purity clay, accounting for Al 2 o 3 The mass ratio of the particles is 6%, and the auxiliary materials are boric acid, sodium fluoride, and PVC particles, wherein boric acid accounts for Al 2 o 3 The mass ratio of particles is 0.3%, sodium fluoride accounts for Al 2 o 3 The mass ratio of particles is 5%, PVC particles account for Al 2 o 3 The mass ratio of particles is 8%;

[0022] 2) Preparation of Al 2 o 3 Prefabricated block: the Al selected in the previous step 2 o 3 Granules, binders and auxiliary materials are mechanically mixed and put into a press to form a prefabrica...

Embodiment 2

[0027] a kind of Al 2 o 3 The casting infiltration method of particle surface reinforced steel matrix composite material is carried out according to the following steps,

[0028] 1) Proportioning components: Al with particle size of 120-150 mesh and 200-320 mesh 2 o 3 Particles, of which 120-150 mesh accounts for 40% by weight, and 200-320 mesh accounts for 60%; the binder is high-purity clay, accounting for Al 2 o 3 The mass ratio of the particles is 8%, and the auxiliary materials are boric acid, sodium fluoride, and PVC particles, of which boric acid accounts for Al 2 o 3 The mass ratio of particles is 0.5%, sodium fluoride accounts for Al 2 o 3 The mass ratio of particles is 6%, PVC particles account for Al 2 o 3 The mass ratio of particles is 10%;

[0029] 2) Preparation of Al 2 o 3 Prefabricated block: the Al selected in the previous step 2 o 3 Granules, binders and auxiliary materials, after mechanical mixing, put them into a press and press them into pref...

Embodiment 3

[0034] a kind of Al 2 o 3 The casting infiltration method of particle surface reinforced steel matrix composite material is carried out according to the following steps,

[0035] 1) Proportioning components: Al with particle size of 120-150 mesh and 200-320 mesh 2 o 3 Particles, wherein 120-150 mesh accounts for 50% in weight percentage, 200-320 mesh accounts for 70%; the binder is high-purity clay, accounting for Al 2 o 3 The mass ratio of the particles is 10%, and the auxiliary materials are boric acid, sodium fluoride, and PVC particles, of which boric acid accounts for Al 2 o 3 The mass ratio of particles is 0.8%, sodium fluoride accounts for Al 2 o 3 The mass ratio of particles is 8%, PVC particles account for Al 2 o 3 The mass ratio of particles is 8%;

[0036] 2) Preparation of Al 2 o 3 Prefabricated block: the Al selected in the previous step 2 o 3 Granules, binders and auxiliary materials are mechanically mixed and put into a press to form a prefabricate...

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Abstract

The invention discloses a casting-penetrating method of a Al2O3 particle surface reinforced steel-base composite material. The method comprises five steps of proportioning, preparing Al2O3 precast blocks, roasting briquettes, fixing the precast blocks and smelting, casting and penetrating. In the composite material prepared by the method disclosed by the invention, the Al2O3 particles are embedded in the steel base perfectly; as the Al2O3 particles are mixed according to the particle sizes, the arrangement is relatively dense without clustering; and a steel substrate is filled around the Al2O3 particles in a metallurgical bonding state. The composite process provided by the invention is simple and has low cost, and is applicable to the surface recombination wear-resistant material in the working condition of low-stress abrasive corrosion wear.

Description

technical field [0001] The invention relates to the field of casting, in particular to the field of casting infiltration technology. Background technique [0002] Wear is one of the main forms of failure of mechanical parts, and abrasive wear accounts for 50% of material wear. In abrasive wear, low stress erosion wear accounts for a certain proportion. Low-stress erosion wear widely exists in modern industrial production, such as the wear of flow-through parts, pipes and valves of mortar pumps in mines and power plants. During the working process, these wearable parts not only bear the erosion and cutting action of solid particles, but also bear the corrosive action of liquid medium and high temperature. The working environment is extremely harsh, so the service life of these wear-resistant parts is relatively low. [0003] At present, the wear-resistant materials commonly used in industrial and mining enterprises include: white cast iron, wear-resistant steel, non-ferrous...

Claims

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Application Information

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IPC IPC(8): B22D19/08B22D18/06
Inventor 陈伟军
Owner JIANGSU GREENHUB TECH
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