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Pre-alloyed powder material

A pre-alloyed powder and powder material technology, which is applied in the field of pre-alloyed powder materials, can solve problems such as easy oxidation, large wear, and poor high-temperature resistance, and achieve improved strength and hardness, high oxidation resistance, and sufficient alloy diffusion. Effect

Inactive Publication Date: 2017-03-22
南通白鹤机针有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding nickel, cobalt, copper, chromium, molybdenum and other substances improves the strength of powder metallurgy materials, but traditional pre-alloyed powders have poor high temperature resistance and are prone to oxidation, and their products wear a lot during use, resulting in unsuitable high-priced products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A pre-alloyed powder material, the powder material contains the following components according to the mass percentage:

[0019] Carbon 20%;

[0020] Chromium 22%;

[0021] Molybdenum 18%;

[0022] Nickel 5%;

[0023] Manganese 2%;

[0024] Zirconium 5%;

[0025] Rare earth element cerium 2%;

[0026] Copper 26%.

[0027] Pre-alloyed powder hydrogen loss HL<0.12%.

[0028] The powder mixed in the above ratio is cold-pressed with a pressure of 500 MPa and a pressing speed of 180 mm / min, and the powder is kept for 2 minutes after forming.

Embodiment 2

[0030] A pre-alloyed powder material, the powder material contains the following components according to the mass percentage:

[0031] Carbon 23%;

[0032] Chromium 25%;

[0033] Molybdenum 20%;

[0034] Nickel 6%;

[0035] Manganese 3%;

[0036] Zirconium 6%;

[0037] Rare earth element cerium 3%;

[0038] Copper 14%.

[0039] Pre-alloyed powder hydrogen loss HL<0.12%.

[0040] The powder mixed in the above ratio is cold-pressed with a pressure of 550 MPa and a pressing speed of 200 mm / min, and the powder is kept for 2.5 min after forming.

Embodiment 3

[0042] A pre-alloyed powder material, the powder material contains the following components according to the mass percentage:

[0043] Carbon 25%;

[0044] Chromium 27%;

[0045] Molybdenum 21%;

[0046] Nickel 8%;

[0047] Manganese 4%;

[0048] Zirconium 7%;

[0049] Rare earth element cerium 4%;

[0050] Copper 4%.

[0051] Pre-alloyed powder hydrogen loss HL<0.12%.

[0052] The powder mixed in the above ratio is cold-pressed with a pressure of 600 MPa and a pressing speed of 220 mm / min, and the powder is kept for 3 minutes after forming.

[0053] The active element zirconium improves the adhesion of the oxide film and prevents casting segregation; the elongation of the sample added with chromium powder exceeds 8%, which is much higher than the strength and elongation of the sample without chromium powder added. This is because with the addition of Cr, the solid solution strengthening effect of the material is strengthened, the structure is uniformly refined, the st...

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PUM

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Abstract

The invention discloses a pre-alloyed powder material. The powder material comprises the following components in percentage by mass: 20 to 25% of carbon, 22 to 27% of chromium, 18 to 21% of molybdenum, 5 to 8% of nickel, 2 to 4% of manganese, 5 to 7% of zirconium, 2 to 4% of rare earth cerium, and the balance copper. The pre-alloyed powder material is prepared through chromium, molybdenum, nickel, copper, rare earth element and other metal materials; the alloy is fully dispersed; the oxidizing resistance is high; the strength and hardness of the alloy can be effectively improved; the pre-alloyed powder material is applicable to a place with complex environment.

Description

technical field [0001] The invention relates to a pre-alloyed powder material. Background technique [0002] The alloy added in the production of pre-alloyed powder is mainly to improve the mechanical properties of the material. Adding nickel, cobalt, copper, chromium, molybdenum and other substances improves the strength of powder metallurgy materials, but traditional pre-alloyed powders have poor high temperature resistance and are prone to oxidation, and their products wear a lot during use, resulting in unsuitable high-priced products. Therefore, it is necessary to provide a new technical solution to solve the above problems. Contents of the invention [0003] To solve the above problems, the present invention provides a pre-alloyed powder material. [0004] The technical solution adopted in the present invention is: a pre-alloyed powder material, which contains the following components according to the mass percentage: [0005] Carbon 20-25%; [0006] Chromium 22-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/02C22C32/00C22C1/05C22C1/10B22F1/00B22F3/02
CPCC22C30/02B22F1/0003B22F3/02C22C1/0425C22C1/045C22C1/05C22C9/00C22C27/06C22C32/0084
Inventor 倪辉
Owner 南通白鹤机针有限公司
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