CN103357863A - High abrasion resistant metallurgy valve seat and preparation method thereof - Google Patents
High abrasion resistant metallurgy valve seat and preparation method thereof Download PDFInfo
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- CN103357863A CN103357863A CN2013102489592A CN201310248959A CN103357863A CN 103357863 A CN103357863 A CN 103357863A CN 2013102489592 A CN2013102489592 A CN 2013102489592A CN 201310248959 A CN201310248959 A CN 201310248959A CN 103357863 A CN103357863 A CN 103357863A
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Abstract
The invention discloses a high abrasion resistant metallurgy valve seat and a preparation method thereof. The high abrasion resistant metallurgy valve seat is characterized by comprising the following components in parts by weight: 99-102 parts of iron powder, 1.2-1.4 parts of graphite, 1.4-1.6 parts of chromium powder, 0.2-0.3 part of molybdenum powder, 1.5-1.7 parts of Si, 0.5-0.9 part of As, 0.08-0.12 part of Sb, 0.04-0.07 part of Sc, 0.4-0.5 part of ZrO2, 1.2-1.5 parts of SiO2, 0.4-0.6 part of ZrB2, 0.3-0.5 part of TiB2 and 2-3 parts of dispersant. According to the invention, the wear resistant performance, the high temperature resistant performance and the abrasion resistant performance of the product can be improved, and the radial collapse intensity of the product is enhanced.
Description
Technical field
The present invention relates to field of powder metallurgy, relate in particular to a kind of high-wear-resistant powder metallurgy valve seating and preparation method thereof.
Background technology
PM technique be with material science and metal forming technology perfect combine a kind of new technique because efficient, be widely used in various industries 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, can add other structural constituent yet, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part on mechanical property.
The powder metallurgy mechanization degree is high, can reduce personnel, can raise the efficiency again, and then save cost.PM technique can replace traditional manufacturing process, for the vast traditional forms of enterprises saves cost.
So study the prescription of the powder metallurgy of various components of machine, adapt to different needs, have great importance.
Summary of the invention
The purpose of this invention is to provide a kind of high-wear-resistant powder metallurgy valve seating and preparation method thereof.
Technical scheme of the present invention is as follows:
A kind of high-wear-resistant powder metallurgy valve seating is characterized in that being made by the raw material of following weight portion:
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, ZrO
20.4-0.5, SiO
21.2-1.5, zirconium diboride 0.4-0.6, titanium diboride 0.3-0.5, dispersant 2-3.
Described dispersant is made by the raw material of following weight portion: aminopropyl triethoxysilane 1.5-1.8, zirconium boride 0.3-0.5, high wear-resistant carbon black 0.2-0.4, zirconium fluoride 0.2-0.5, dimethicone 2.3-2.5, microcrystalline wax 3-4, carboxymethyl cellulose 2-3;
The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.
The preparation method of described high-wear-resistant powder metallurgy valve seating is characterized in that may further comprise the steps:
(1) with each mixing of materials, after stirring 40-50 minute under 53-57 ℃, the mould of packing into is pressed into base;
(2) pressed compact is placed in the sintering furnace, oxygen content is in the blanket of nitrogen of 0.1-0.2%, is warming up under the 450-480 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 880-920 ℃ of condition sintering 2-3 hour with 10-12 ℃ of/minute clock rate again; Be warming up under the 1100-1190 ℃ of condition sintering 1-2 hour with 16-18 ℃ of/minute clock rate;
(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 50-60 minute under temperature 450-490 ℃ the condition;
(4) pressed compact is put under the stove 320-340 ℃ condition again, be incubated 2-3 hour, take out and get final product.
Scientific formula of the present invention adopts graphite to cooperate with chromium, the product dense structure of production, microstructure is good, hole seldom, the rigidity of structure, hardness, fatigue performance, tensile strength properties are good.And owing to having adopted mold pressing, make simplified equipment, reduced production cost.
The present invention can increase wearability, heat-resisting quantity, corrosion resistance and the radial crushing strength of product.
The specific embodiment
A kind of high-wear-resistant powder metallurgy valve seating, made by 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, ZrO
20.5, SiO
21.2, zirconium diboride 0.6, titanium diboride 0.5, dispersant 3.
Described dispersant is made by the raw material of following weight portion: aminopropyl triethoxysilane 1.8, zirconium boride 0.3, high wear-resistant carbon black 0.4, zirconium fluoride 0.5, dimethicone 2.5, microcrystalline wax 3, carboxymethyl cellulose 2;
The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.
The preparation method of high-wear-resistant powder metallurgy valve seating may further comprise the steps:
(1) with each mixing of materials, after stirring 40-50 minute under 53-57 ℃, the mould of packing into is pressed into base;
(2) pressed compact is placed in the sintering furnace, oxygen content is in the blanket of nitrogen of 0.1-0.2%, is warming up under the 450-480 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 880-920 ℃ of condition sintering 2-3 hour with 10-12 ℃ of/minute clock rate again; Be warming up under the 1100-1190 ℃ of condition sintering 1-2 hour with 16-18 ℃ of/minute clock rate;
(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 50-60 minute under temperature 450-490 ℃ the condition;
(4) pressed compact is put under the stove 320-340 ℃ condition again, be incubated 2-3 hour, take out and get final product.
Through detecting heat treatment hardness of the present invention: HRC65; Tensile strength: 1180MPa.
Claims (2)
1. high-wear-resistant powder metallurgy valve seating is characterized in that being made by the raw material of following weight portion:
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, ZrO
20.4-0.5, SiO
21.2-1.5, zirconium diboride 0.4-0.6, titanium diboride 0.3-0.5, dispersant 2-3;
Described dispersant is made by the raw material of following weight portion: aminopropyl triethoxysilane 1.5-1.8, zirconium boride 0.3-0.5, high wear-resistant carbon black 0.2-0.4, zirconium fluoride 0.2-0.5, dimethicone 2.3-2.5, microcrystalline wax 3-4, carboxymethyl cellulose 2-3; The preparation method is: with each mixing of materials, grinding distribution evenly gets final product.
2. the preparation method of high-wear-resistant powder metallurgy valve seating according to claim 1 is characterized in that may further comprise the steps:
(1) with each mixing of materials, after stirring 40-50 minute under 53-57 ℃, the mould of packing into is pressed into base;
(2) pressed compact is placed in the sintering furnace, oxygen content is in the blanket of nitrogen of 0.1-0.2%, is warming up under the 450-480 ℃ of condition sintering 2-3 hour with 6-8 ℃ of/minute clock rate; Be warming up under the 880-920 ℃ of condition sintering 2-3 hour with 10-12 ℃ of/minute clock rate again; Be warming up under the 1100-1190 ℃ of condition sintering 1-2 hour with 16-18 ℃ of/minute clock rate;
(3) pressed compact is sent in the steam treatment stove, in stove, passed into steam 50-60 minute under temperature 450-490 ℃ the condition;
(4) pressed compact is put under the stove 320-340 ℃ condition again, be incubated 2-3 hour, take out and get final product.
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| Application Number | Priority Date | Filing Date | Title |
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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 true CN103357863A (en) | 2013-10-23 |
| CN103357863B CN103357863B (en) | 2016-12-28 |
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Cited By (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 |
| CN104014797A (en) * | 2013-12-17 | 2014-09-03 | 芜湖市天雄新材料科技有限公司 | Method for manufacturing high performance powder metallurgy gear |
| 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 |
| 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 |
| 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 |
| CN106077609A (en) * | 2016-06-15 | 2016-11-09 | 张荣斌 | High tenacity iron-base steam valve base made by powder metallurgy |
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| EP0401482A2 (en) * | 1989-06-09 | 1990-12-12 | DALAL, Kirit | Wear resistant sintered alloy, especially for valve seats for internal combustion engines |
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| 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 |
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| EP0401482A2 (en) * | 1989-06-09 | 1990-12-12 | 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 |
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Cited By (7)
| 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 |
| CN104014797A (en) * | 2013-12-17 | 2014-09-03 | 芜湖市天雄新材料科技有限公司 | Method for manufacturing high performance powder metallurgy gear |
| 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 |
| 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 |
| 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 |
| CN106077609A (en) * | 2016-06-15 | 2016-11-09 | 张荣斌 | High tenacity iron-base steam valve base made by powder metallurgy |
| CN106077609B (en) * | 2016-06-15 | 2018-08-31 | 张荣斌 | High tenacity iron-base steam valve base made by powder metallurgy |
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| CN103357863B (en) | 2016-12-28 |
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Effective date of registration: 20160811 Address after: Taibai Industrial Park, 243100 Anhui city of Ma'anshan province Dangtu County Applicant after: ANHUI JISITE INTELLIGENT EQUIPMENT CO., LTD. Address before: Taibai Industrial Park, 243181 Anhui city of Ma'anshan province Dangtu County Applicant before: Maanshan Machinery Manufacturing Co., Ltd. |
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