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High density stainless steel alloy material for powder metallurgy

A powder metallurgy and alloy material technology, applied in the field of stainless steel alloy materials for high-density powder metallurgy, can solve the problems of product improvement and development constraints with high tensile strength and high toughness, and achieve the effect of improving strength and density

Inactive Publication Date: 2017-05-10
江门市宏佳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In today's powder metallurgy field, the sintered density of stainless steel materials on the market can only reach 7.0g / cm3, which greatly restricts the promotion and development of products with high tensile strength and high toughness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of high-density powder metallurgy stainless steel alloy material described in this embodiment 1, by weight ratio, includes the following components: 12% copper, 87% stainless steel, 1% auxiliary agent; stainless steel includes 304 stainless steel and 316 The stainless steel mixture of stainless steel; 304 stainless steel and 316 stainless steel account for 70% and 30% of the stainless steel mixture by weight, and each material is put into the smelting atomization system for atomization to obtain powder, and then pressed and sintered in turn. Finally, a product with a density of 7.6g / cm3 or more is obtained. Compared with the existing product, the product of the present invention has a tensile strength>600MPa and a stretch rate>13%.

[0013] The additive is calculated by weight, including 10% titanium, 10% aluminum, 10% tetratantalum hafnium carbide, 10% silver powder, 10% vanadium steel, 10% nickel, 10% magnesium, 10% cobalt, 10% molybdenum, 10% zirconium.

Embodiment 2

[0015] A kind of stainless steel alloy material for high-density powder metallurgy described in this embodiment 2, by weight ratio, includes the following components: 17% copper, 82% stainless steel, 1% auxiliary agent; stainless steel includes 304 stainless steel and 316 The stainless steel mixture of stainless steel; 304 stainless steel and 316 stainless steel account for 80% and 20% of the stainless steel mixture by weight, and each material is put into the smelting atomization system for atomization to obtain powder, and then pressed and sintered in turn. Finally, a product with a density of 7.6g / cm3 or more is obtained. Compared with the existing product, the product of the present invention has a tensile strength>600MPa and a stretch rate>13%.

[0016] The additive is calculated by weight, including 10% titanium, 10% aluminum, 10% tetratantalum hafnium carbide, 10% silver powder, 10% vanadium steel, 10% nickel, 10% magnesium, 10% cobalt, 10% molybdenum, 10% zirconium.

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Abstract

The invention discloses a high density stainless steel alloy material for powder metallurgy. The high density stainless steel alloy material comprises, by weight, 12%-17% of copper, 82%-87% of stainless steel and 1% of additives. The stainless steel comprises a stainless steel mixture of 304 stainless steel and 316 stainless steel, and the ratios of the 304 stainless steel and the 316 stainless steel accounting for the stainless steel mixture are, by weight, 70%-80% and 20%-30% respectively. All the materials are put into a smelting atomization system and subjected to atomization, and a powder material is obtained; then pressing and sintering are conducted successively; and finally a product with density being 7.6 g / cm<3> or above is obtained. Compared with an existing product, the product of the invention has the tensile strength being larger than 600 MPa and the stretching rate being larger than 13%. According to the high density stainless steel alloy material for the powder metallurgy, by using 12%-17% of the copper, 82%-87% of the 304 stainless steel and the 316 stainless steel and 1% of the additives, performance is enhanced, the strength, density and the like are enhanced, the powder material is prepared by adopting the smelting atomization process, and then the product with the density being 7.6 g / cm<3> or above is obtained through pressing and sintering.

Description

Technical field [0001] The invention relates to the field of stainless steel alloy materials, and specifically relates to a stainless steel alloy material for high-density powder metallurgy. Background technique [0002] Stainless steel is divided into martensitic steel, ferritic steel, austenitic steel, austenitic-ferritic steel and precipitation hardening stainless steel according to its organizational state. Among them, ferritic stainless steel has corrosion resistance, toughness and weldability; austenitic steel has corrosion resistance while having good plasticity, toughness, weldability and corrosion resistance; austenite-ferrite has both austenite and And the advantages of ferritic stainless steel, and it has superplasticity, especially for stainless steel with austenite-ferrite, it has good performance. [0003] In today's powder metallurgy field, the sintering density of stainless steel materials currently on the market can only reach 7.0g / cm3, which greatly restri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/02
CPCC22C33/0278
Inventor 舒思雄刘良青
Owner 江门市宏佳新材料科技有限公司
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