CN103480849B - A kind of natural gas engine powder metallurgy valve seat loop material - Google Patents
A kind of natural gas engine powder metallurgy valve seat loop material Download PDFInfo
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- CN103480849B CN103480849B CN201310489586.8A CN201310489586A CN103480849B CN 103480849 B CN103480849 B CN 103480849B CN 201310489586 A CN201310489586 A CN 201310489586A CN 103480849 B CN103480849 B CN 103480849B
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Abstract
The invention discloses a kind of natural gas engine powder metallurgy valve seat loop material, it includes the element raw material of following quality proportioning: C:0.6-1.5%, S:0.3-1.5%, Cr:3-10%, Mo:4-12%, Ni:0.5-5%, Co:3-10%, Cu:10-20%, Mn:1-2.5%, V:1-4%, W:2-7%, Fe: surplus.Natural gas engine powder metallurgy valve seat loop material of the present invention effectively raises the abrasion resistance of powder metallurgy seat ring, can meet the working condition requirement of natural gas fueled engines.
Description
Technical field
The present invention relates to a kind of natural gas engine powder metallurgy valve seat loop material.
Background technology
The valve retainer work under bad environment of existing natural gas engine; almost lose fog lubrication and oxide film protection effect; metal between valve retainer with valve directly contacts and increases, and the wearing and tearing of valve retainer and valve increase greatly, and original valve retainer material can not meet the demands.
Summary of the invention
The object of the present invention is to provide a kind of natural gas engine powder metallurgy valve seat loop material that can improve the abrasion resistance properties of material.
Natural gas engine powder metallurgy valve seat loop material of the present invention, includes the element raw material of following quality proportioning: C:0.6-1.5%, S:0.3-1.5%, Cr:3-10%, Mo:4-12%, Ni:0.5-5%, Co:3-10%, Cu:10-20%, Mn:1-2.5%, V:1-4%, W:2-7%, Fe: surplus.
Also can be not more than Si, P and/or O of 2% containing mass fraction in natural gas engine powder metallurgy valve seat loop material of the present invention.
Natural gas engine powder metallurgy valve seat loop material preparation method of the present invention, can comprise the steps:
(1) in proportion raw material powder is mixed;
(2) on press, the powder mixed is pressed;
(3) molded blank is carried out high temperature sintering in sintering furnace, carry out copper infiltration simultaneously;
(4) with liquid nitrogen, cold treatment is carried out to sintering blank;
(5) in heat-treatment furnace, cold treatment blank is heat-treated;
(6) finished product is machined to.
Improve wearability principle: technical in original design, increase the ratio of alloy particle, improve the content of the elements such as high temperature resistant, anti abrasive Alloy Elements Mo, Co.
Natural gas engine powder metallurgy valve seat loop material of the present invention effectively raises the abrasion resistance of powder metallurgy seat ring, can meet the working condition requirement of natural gas fueled engines.
Detailed description of the invention
Following embodiment further illustrates using as the explaination to the technology of the present invention content for content of the present invention; but flesh and blood of the present invention is not limited in described in following embodiment, those of ordinary skill in the art can and should know any simple change based on connotation of the present invention or replace all should belong to protection domain of the presently claimed invention.
embodiment 1
Valve retainer material composition of the present invention is as follows:
| Element | C | S | Cr | Mo | Ni | Co | Cu | Mn | V | W | Si | Surplus |
| Content wt% | 1.0 | 0.8 | 5 | 8 | 3 | 6 | 15 | 1 | 2 | 5 | 1 | Fe |
Manufacture craft: powder mixing → compressing → sintering (oozing copper) → cold treatment → heat treatment
(1) in proportion raw material powder is mixed; (2) on press, the powder mixed is pressed; (3) molded blank is carried out high temperature sintering in sintering furnace, carry out copper infiltration simultaneously; (4) with liquid nitrogen, cold treatment is carried out to sintering blank; (5) in heat-treatment furnace, cold treatment blank is heat-treated; (6) finished product is machined to.
embodiment 2
Valve retainer material composition of the present invention is as follows:
| Element | C | S | Cr | Mo | Ni | Co | Cu | Mn | V | W | P | Surplus |
| Content wt% | 0.6 | 0.3 | 3 | 12 | 0.5 | 3 | 20 | 1 | 1 | 7 | 1 | Fe |
Manufacture craft: powder mixing → compressing → sintering (oozing copper) → cold treatment → heat treatment
(1) in proportion raw material powder is mixed; (2) on press, the powder mixed is pressed; (3) molded blank is carried out high temperature sintering in sintering furnace, carry out copper infiltration simultaneously; (4) with liquid nitrogen, cold treatment is carried out to sintering blank; (5) in heat-treatment furnace, cold treatment blank is heat-treated; (6) finished product is machined to.
embodiment 3
Valve retainer material composition of the present invention is as follows:
| Element | C | S | Cr | Mo | Ni | Co | Cu | Mn | V | W | O | Surplus |
| Content wt% | 1.5 | 1.5 | 10 | 4 | 5 | 10 | 10 | 2.5 | 4 | 2 | 1 | Fe |
Manufacture craft: powder mixing → compressing → sintering (oozing copper) → cold treatment → heat treatment
(1) in proportion raw material powder is mixed; (2) on press, the powder mixed is pressed; (3) molded blank is carried out high temperature sintering in sintering furnace, carry out copper infiltration simultaneously; (4) with liquid nitrogen, cold treatment is carried out to sintering blank; (5) in heat-treatment furnace, cold treatment blank is heat-treated; (6) finished product is machined to.
Abrasion test (experimental condition: temperature 300 DEG C, revolution 2500rpm, test period 10 hours, valve retainer abrasiometer)
| Valve retainer material | Valve retainer wear extent mm | Valve wear amount mm | Total wear extent mm |
| Reference material V581 | 0.140 | 0.040 | 0.180 |
| Embodiment 1 product | 0.110 | 0.030 | 0.140 |
| Embodiment 1 product | 0.100 | 0.030 | 0.130 |
| Embodiment 1 product | 0.110 | 0.030 | 0.140 |
From test data, embodiments of the invention 1-3 gained valve retainer material effectively raises the abrasion resistance of powder metallurgy seat ring, can meet the working condition requirement of natural gas fueled engines.
Claims (1)
1. a natural gas engine powder metallurgy valve seat loop material, includes the element raw material of following quality proportioning: C:1.0%, S:0.8%, Cr:5%, Mo:8%, Ni:3%, Co:6%, Cu:15%, Mn:1%, V:2%, W:5%, Si:1%, Fe: surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489586.8A CN103480849B (en) | 2013-10-18 | 2013-10-18 | A kind of natural gas engine powder metallurgy valve seat loop material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489586.8A CN103480849B (en) | 2013-10-18 | 2013-10-18 | A kind of natural gas engine powder metallurgy valve seat loop material |
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| Publication Number | Publication Date |
|---|---|
| CN103480849A CN103480849A (en) | 2014-01-01 |
| CN103480849B true CN103480849B (en) | 2016-02-10 |
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| CN201310489586.8A Active CN103480849B (en) | 2013-10-18 | 2013-10-18 | A kind of natural gas engine powder metallurgy valve seat loop material |
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924162A (en) * | 2014-04-09 | 2014-07-16 | 马鞍山市兴隆铸造有限公司 | High temperature-resistant and wear-resistant valve seat ring |
| CN104480405A (en) * | 2014-12-29 | 2015-04-01 | 常熟市双月机械有限公司 | Hold-down sintered material for valve retainer |
| CN104928599A (en) * | 2015-03-29 | 2015-09-23 | 安徽同丰橡塑工业有限公司 | Formula for manufacturing valve seat ring material |
| CN105401100A (en) * | 2015-11-10 | 2016-03-16 | 太仓捷公精密金属材料有限公司 | Iron alloy metallic material |
| JP6378717B2 (en) | 2016-05-19 | 2018-08-22 | 株式会社日本製鋼所 | Iron-based sintered alloy and method for producing the same |
| CN106286504A (en) * | 2016-08-30 | 2017-01-04 | 宁波瑞丰汽车零部件有限公司 | A kind of Combined desk is with connecting support |
| CN106282783B (en) * | 2016-10-18 | 2018-05-15 | 江苏上淮动力有限公司 | Inlet and exhaust valve seat ring and the inlet and exhaust valve combination of engine |
| CN106567005A (en) * | 2016-11-01 | 2017-04-19 | 安徽恒均粉末冶金科技股份有限公司 | Powder-metallurgic valve seat ring of CNG engine |
| CN107385361A (en) * | 2017-05-26 | 2017-11-24 | 安徽白兔湖粉末冶金有限公司 | High temperature wear resistant valve retainer and preparation method thereof |
| CN107338398A (en) * | 2017-05-26 | 2017-11-10 | 安徽白兔湖粉末冶金有限公司 | High temperature wear resistant valve guide bushing and preparation method thereof |
| CN107815616A (en) * | 2017-10-31 | 2018-03-20 | 安庆帝伯粉末冶金有限公司 | A kind of powder metallurgy valve seat circle material that diesel engine is discharged for state six |
| DE102018209682A1 (en) * | 2018-06-15 | 2019-12-19 | Mahle International Gmbh | Process for the manufacture of a powder metallurgical product |
| US20200216935A1 (en) * | 2019-01-04 | 2020-07-09 | Tenneco Inc. | Hard powder particles with improved compressibility and green strength |
| CN111575605A (en) * | 2020-05-19 | 2020-08-25 | 湘潭大学 | Stainless steel-based valve seat ring material for CNG engine and preparation method thereof |
| CN112247140B (en) * | 2020-09-25 | 2021-08-27 | 安庆帝伯粉末冶金有限公司 | High-temperature-resistant wear-resistant powder metallurgy valve seat ring material and manufacturing method thereof |
| DE102020212371A1 (en) * | 2020-09-30 | 2022-03-31 | Mahle International Gmbh | Process for the powder metallurgical manufacture of a component |
| CN113549845A (en) * | 2021-06-29 | 2021-10-26 | 安徽森拓新材料有限公司 | High-performance powder metallurgy valve seat ring material |
| CN113881903A (en) * | 2021-09-01 | 2022-01-04 | 安徽金亿新材料股份有限公司 | Application of Chang' e steel in preparation of valve guide or multi-step complex structural part, valve guide and multi-step complex structural part and preparation |
| DE102021210268A1 (en) | 2021-09-16 | 2023-03-16 | Mahle International Gmbh | Layer-sintered valve seat ring, method for its production, combinations thereof and their use |
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