CN103357863B - A kind of High abrasion resistant metallurgy valve seat and preparation method thereof - Google Patents
A kind of High abrasion resistant metallurgy valve seat and preparation method thereof Download PDFInfo
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- CN103357863B CN103357863B CN201310248959.2A CN201310248959A CN103357863B CN 103357863 B CN103357863 B CN 103357863B CN 201310248959 A CN201310248959 A CN 201310248959A CN 103357863 B CN103357863 B CN 103357863B
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Abstract
A kind of High abrasion resistant metallurgy valve seat and preparation method thereof, it is characterised in that be prepared by the raw materials in: iron powder 99 102, graphite 1.2 1.4, chromium powder 1.4 1.6, molybdenum powder 0.2 0.3, Si1.5 1.7, As0.5 0.9, Sb0.08 0.12, Sc0.04 0.07, ZrO20.4‑0.5、SiO21.2 1.5, zirconium diboride 0.4 0.6, titanium diboride 0.3 0.5, dispersant 23.The present invention can increase the wearability of product, heat-resisting quantity, corrosion resistance and radial crushing strength.
Description
Technical field
The present invention relates to field of powder metallurgy, particularly relate to a kind of High abrasion resistant metallurgy valve seat and preparation side thereof
Method.
Background technology
PM technique is that perfect to material science and metal-forming techniques is combined a kind of new technique,
Because efficiently, being widely used in various industry without machining, material-saving, energy-saving and environmental protection.
Powder metallurgy structural part product material composition is not limited by melting, both can add alloying component, it is also possible to add
Other structural constituent, and be adjusted as requested in sizable scope, and then energy in mechanical property
Reach the effect mated with steel part.
Powder metallurgy mechanization degree is high, can reduce personnel, can improve again efficiency, and then cost-effective.Powder
End metallurgical technology can replace traditional manufacturing process, cost-effective for the vast traditional forms of enterprises.
So studying the formula of the powder metallurgy of various component of machine, adapting to different needs, having great importance.
Summary of the invention
It is an object of the invention to provide a kind of High abrasion resistant metallurgy valve seat and preparation method thereof.
Technical scheme is as follows:
A kind of High abrasion resistant metallurgy valve seat, it is characterised in that be prepared by the raw materials in:
Iron powder 99-102, graphite 1.2-1.4, chromium powder 1.4-1.6, molybdenum powder 0.2-0.3, Si1.5-1.7, As0.5-0.9,
Sb0.08-0.12、Sc0.04-0.07、ZrO20.4-0.5、SiO21.2-1.5, zirconium diboride 0.4-0.6, two boronations
Titanium 0.3-0.5, dispersant 2-3.
Described dispersant is prepared by the raw materials in: aminopropyl triethoxysilane 1.5-1.8, boronation
Zirconium 0.3-0.5, high wear-resistant carbon black 0.2-0.4, Zirconium tetrafluoride. 0.2-0.5, dimethicone 2.3-2.5, microcrystalline wax
3-4, carboxymethyl cellulose 2-3；
Preparation method is: mixed by each material, and grinding distribution is uniformly.
The preparation method of described High abrasion resistant metallurgy valve seat, it is characterised in that comprise the following steps:
(1) each material is mixed, after stirring 40-50 minute at 53-57 DEG C, load mould, be pressed into base；
(2) being placed in sintering furnace by pressed compact, oxygen content is in the blanket of nitrogen of 0.1-0.2%, with 6-8 DEG C/min of speed
Sinter 2-3 hour under the conditions of being warming up to 450-480 DEG C；Again with 10-12 DEG C/min of ramp to 880-920 DEG C
Under the conditions of sinter 2-3 hour；Under the conditions of 1100-1190 DEG C, 1-2 is sintered with 16-18 DEG C/min of ramp
Hour；
(3) pressed compact is sent into steam process in stove, stove is passed through under conditions of temperature 450-490 DEG C steam 50-60
Minute；
(4) pressed compact is placed in stove under the conditions of 320-340 DEG C, be incubated 2-3 hour, take out and get final product.
Scientific formula of the present invention, uses graphite to coordinate with chromium, the product dense structure of production, and microstructure is good,
Hole is little, and the rigidity of structure, hardness, fatigue performance, tensile strength properties are excellent.And owing to have employed
Mold, make equipment simplify, reduce production cost.
The present invention can increase the wearability of product, heat-resisting quantity, corrosion resistance and radial crushing strength.
Detailed description of the invention
A kind of High abrasion resistant metallurgy valve seat, is made up of the raw material (kilogram) of following weight portion:
Iron powder 102, graphite 1.4, chromium powder 1.4, molybdenum powder 0.2, Si1.7, As0.9, Sb0.12, Sc0.07, ZrO20.5、
SiO21.2, zirconium diboride 0.6, titanium diboride 0.5, dispersant 3.
Described dispersant is prepared by the raw materials in: aminopropyl triethoxysilane 1.8, zirconium boride
0.3, high wear-resistant carbon black 0.4, Zirconium tetrafluoride. 0.5, dimethicone 2.5, microcrystalline wax 3, carboxymethyl cellulose
2；
Preparation method is: mixed by each material, and grinding distribution is uniformly.
The preparation method of High abrasion resistant metallurgy valve seat, comprises the following steps:
(1) each material is mixed, after stirring 40-50 minute at 53-57 DEG C, load mould, be pressed into base；
(2) being placed in sintering furnace by pressed compact, oxygen content is in the blanket of nitrogen of 0.1-0.2%, with 6-8 DEG C/min of speed
Sinter 2-3 hour under the conditions of being warming up to 450-480 DEG C；Again with 10-12 DEG C/min of ramp to 880-920 DEG C
Under the conditions of sinter 2-3 hour；Under the conditions of 1100-1190 DEG C, 1-2 is sintered with 16-18 DEG C/min of ramp
Hour；
(3) pressed compact is sent into steam process in stove, stove is passed through under conditions of temperature 450-490 DEG C steam 50-60
Minute；
(4) pressed compact is placed in stove under the conditions of 320-340 DEG C, be incubated 2-3 hour, take out and get final product.
Through detection, the heat treatment hardness of the present invention: HRC65；Tensile strength: 1180MPa.
Claims (2)
1. a High abrasion resistant metallurgy valve seat, it is characterised in that be prepared by the raw materials in: iron powder 99-102, graphite 1.2-1.4, chromium powder 1.4-1.6, molybdenum powder 0.2-0.3, Si1.5-1.7, As0.5-0.9, Sb0.08-0.12, Sc0.04-0.07, ZrO20.4-0.5、SiO21.2-1.5, zirconium diboride 0.4-0.6, titanium diboride 0.3-0.5, dispersant 2-3；Described dispersant is prepared by the raw materials in: aminopropyl triethoxysilane 1.5-1.8, zirconium boride 0.3-0.5, high wear-resistant carbon black 0.2-0.4, Zirconium tetrafluoride. 0.2-0.5, dimethicone 2.3-2.5, microcrystalline wax 3-4, carboxymethyl cellulose 2-3；The preparation method of dispersant is: mixed by each material, and grinding distribution is uniformly.
The preparation method of High abrasion resistant metallurgy valve seat the most according to claim 1, it is characterised in that comprise the following steps:
(1) each material is mixed, after stirring 40-50 minute at 53-57 DEG C, load mould, be pressed into base；
(2) being placed in sintering furnace by pressed compact, oxygen content is in the blanket of nitrogen of 0.1-0.2%, sinters 2-3 hour under the conditions of 450-480 DEG C with 6-8 DEG C/min of ramp；Sinter 2-3 hour under the conditions of 880-920 DEG C with 10-12 DEG C/min of ramp again；Sinter 1-2 hour under the conditions of 1100-1190 DEG C with 16-18 DEG C/min of ramp；
(3) pressed compact is sent into steam process in stove, in stove, be passed through steam under conditions of temperature 450-490 DEG C 50-60 minute；
(4) pressed compact is placed in stove under the conditions of 320-340 DEG C, be incubated 2-3 hour, take out and get final product.
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| CN201310248959.2A CN103357863B (en) | 2013-06-21 | 2013-06-21 | A kind of High abrasion resistant metallurgy valve seat and preparation method thereof |
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| CN201310248959.2A CN103357863B (en) | 2013-06-21 | 2013-06-21 | A kind of High abrasion resistant metallurgy valve seat and preparation method thereof |
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| CN103357863A CN103357863A (en) | 2013-10-23 |
| CN103357863B true CN103357863B (en) | 2016-12-28 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537671A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy automotive engine exhaust valve material and manufacturing method thereof |
| CN104014797B (en) * | 2013-12-17 | 2016-04-20 | 芜湖市天雄新材料科技有限公司 | A kind of preparation method of high performance powder metallurgical gear |
| CN104550919A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Heat-resistant powder metallurgy material for valve and preparation method of heat-resistant powder metallurgy material |
| CN104550922A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Powder metallurgy material for high-finish-degree valve and preparation method of powder metallurgy material |
| CN105149571A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | Powder metallurgy valve seat and preparation method thereof |
| CN106077609B (en) * | 2016-06-15 | 2018-08-31 | 张荣斌 | High tenacity iron-base steam valve base made by powder metallurgy |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3838461A1 (en) * | 1988-11-12 | 1990-05-23 | Krebsoege Gmbh Sintermetall | POWDER METALLURGICAL MATERIAL BASED ON COPPER AND ITS USE |
| EP0401482B1 (en) * | 1989-06-09 | 1994-06-15 | DALAL, Kirit | Wear resistant sintered alloy, especially for valve seats for internal combustion engines |
| JPH10280099A (en) * | 1997-04-11 | 1998-10-20 | Fuji Oozx Inc | Valve seat for internal combustion engine |
| CN1143743C (en) * | 2000-05-16 | 2004-03-31 | 钢铁研究总院 | Powder metallurgy technology for making high-density air valve seat |
| KR20030021916A (en) * | 2001-09-10 | 2003-03-15 | 현대자동차주식회사 | A compound of wear-resistant sintered alloy for valve seat and its manufacturing method |
| CN101634238B (en) * | 2009-08-31 | 2011-09-14 | 桐城市汽车部件有限公司 | Temperature-pressure-die wall lubrication valve seat containing rare earth powder metallurgy and manufacturing method thereof |
| CN101906592B (en) * | 2010-08-05 | 2013-03-27 | 仪征宝泰合金有限公司 | High-wear resistant low-cobalt powder metallurgical valve seat |
| KR101316474B1 (en) * | 2011-09-19 | 2013-10-08 | 현대자동차주식회사 | Valve seat of engine and manufacturing method therof |
| CN103014544A (en) * | 2012-12-03 | 2013-04-03 | 仪征市昌达粉末冶金制品有限公司 | Highly-wear-resistant powder metallurgy valve seat |
| CN102994917B (en) * | 2012-12-11 | 2015-07-15 | 奇瑞汽车股份有限公司 | Alloy material, valve retainer, and preparation method and installation method thereof |
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