CN1453459A - Reinforcing air intake valve for diesel engine of diesel locomotive and its manufacture - Google Patents
Reinforcing air intake valve for diesel engine of diesel locomotive and its manufacture Download PDFInfo
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- CN1453459A CN1453459A CN03123796A CN03123796A CN1453459A CN 1453459 A CN1453459 A CN 1453459A CN 03123796 A CN03123796 A CN 03123796A CN 03123796 A CN03123796 A CN 03123796A CN 1453459 A CN1453459 A CN 1453459A
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- valve
- intake valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The reinforcing air intake valve for diesel engine of diesel locomotive is manufactured with reinforced martensite steel comprising C 0.38-0.50 wt%, Si 2.50-3.75 wt%, Mn less than or equal to 0.80 wt%, Ni less than or equal to 0.50, Cr 8.5-11.0 wt%, S less than or equal to 0.002 wt%, P less than or equal to 0.003 wt%, Mo 0.2-0.3 wt% other than Fe. The gate material has good performance and machinability, stable quality and high performance/cost ratio. The gate after heat treatment has high strength, excellent comprehensive performance, high roughness and good fitting with plastic.
Description
Technical field
The present invention relates to a kind of intake valve, high reinforced intake valve of particularly a kind of combustion locomotive diesel engine and manufacture method thereof.
Background technique
The intake valve of diesel engine of diesel locomotive distribution device is the important moving element of motor, its service condition harshness, work under bad environment, for this reason, require valve to have excellent comprehensive performances, not only to have hot strength and thermostability, and good high temperature resistant exhaust gas corrosion, anti-oxidant anti abrasive characteristic will be arranged, structure, material behavior, the manufacture method of valve are depended in the comprehensive embodiment of above-mentioned all performances substantially.The quality of valve performance directly affects power performance, working life and the reliability of main frame.The valve destructive failure taking place in locomotive operation can cause the motor accident, seriously jeopardizes the security of operation of locomotive.240 series, 280 serial diesel engines are the major impetus of China railways main line transportation as the Dongfeng series internal combustion locomotive of power, occupy an important position in railway transport.But also be in the level that falls behind relatively at present the working life of valve, and the valve early failue that happens occasionally, such as crackle occurring, fall piece and disconnected valve accident, for this reason, the reliability that improves valve with working life problem received the very big concern of railway operation department and internal-combustion engine manufacturing department.The requirement that " improves the technical performance of locomotive and main parts size thereof; functional reliability and working life; progressively prolong the running kilometre between locomotive repair in depot and overhaul " in " Major Technical Policies of Railways " according to Ministry of Railways's promulgation, simultaneously under the requirement of railway transport high-speed overload, internal combustion locomotive is to improving output power, improve and strengthen index, improve reliability, reduce fuel consumption rate, the variation of use fuel oil, reduce harmful exhaust gas, weight reduction, reduced volume, prolong turn(a)round and realize not having the maintenance direction and develop, everything all to combustion system of diesel engine vitals---valve is had higher requirement.The manufacture method and the defective of present China automotive diesel oil machine valve:
1, the valve disc conical surface is strengthened employing awl soldering method cladding high temperature stiff dough abrasion resistance alloy (shown in the accompanying drawing 1), not only complex process, manufacture difficulty are big, and affect the structural behaviour of valve integral body, a large amount of valves built-up welding district crackle occurs, falls piece in operation more than 150,000 kilometers also be the one of the main reasons that causes the diesel engine spiracle accident, having a strong impact on the working life of valve.
2, the performance of valve material 4Cr4Ni14W2Mo can not satisfy the job requirement of diesel engine of diesel locomotive intake valve, can not satisfy the Ministry of Railways's maintenance department reliability management working life to the valve requirement: promptly do not have 〉=30 ten thousand kilometers of maintenance requirement valve operations, valve requires to reach 800,000 kilometers ± 100,000 kilometers of the desired values of locomotive overhaul working life.
Summary of the invention
At the shortcoming that above-mentioned prior art exists, the long-pending experience of being engaged in related domain work for many years of the inventor through feasibility study repeatedly, gets generation of the present invention eventually; The invention provides high reinforced intake valve of a kind of diesel engine of diesel locomotive and manufacture method thereof.
The technical solution used in the present invention is: the Manufacturing material of the high reinforced intake valve of a kind of diesel engine of diesel locomotive is characterized in that: it is for strengthening strong Martensite Steel, and its chemical composition standard (wt%) is: C:0.38-0.50; Si:2.50-3.75; Mn≤0.80; Ni≤0.50; Cr:8.5-11.0; S≤0.002; P≤0.003; Mo:0.2-0.3; All the other are Fe.
Its chemical composition standard (wt%) can be chosen to be: C:0.35/0.4; Si:2.5/2.6; Mn:0.45/0.6; Ni≤0.50; Cr:10/10.5; S≤0.002; P≤0.003; Mo:0.25/0.3; All the other are Fe.
Its chemical composition standard (wt%) can be chosen to be: C:0.4/0.45; Si:2.6/2.8; Mn:0.35/0.45; Ni≤0.50; Cr:8.5/9.5; S≤0.002; P≤0.003; Mo:0.3; All the other are Fe.
Its chemical composition standard (wt%) can be chosen to be: C:0.4/0.5; Si:2.9/3.6; Mn:0.35/0.4; Ni≤0.50; Cr:9.5/10.5; S≤0.002; P≤0.003; Mo:0.2/0.25; All the other are Fe.
The making method of the high reinforced intake valve of a kind of diesel engine of diesel locomotive is characterized in that: its flow process is; Get the raw materials ready → the valve blank electric upset forging is swaged into shape → heat treatment → machining
The valve blank electric upset forging is swaged into shape: when the electric heating upsetting, the forming temperature of the valve head of garlic is: 1050 ℃-1100 ℃, head of garlic strain rate is 1.5-2mm/s, and initial forging temperature is 1030 ℃-1080 ℃ during blank forming, and final forging temperature is 960 ℃-1020 ℃.
Heat treatment is: 1030 ℃ of-1060 ℃/oil coolings of quenching temperature, 520 ℃-620 ℃ of tempering temperatures.
Machining process is: the outer garden of turning valve retainer, the plane of trying to get to the heart of a matter, baseline rod; Air valve cervix, locker slot part cnc profiling, Wai Yuan, end face, plane, inclined-plane, the conical surface, the grinding of R neck.
The advantage that the present invention has
1, valve material performance and good manufacturability, forging, thermal treatment quality control are stablized, and the price performance of material is good, and the commercial Application technical economic benefit is remarkable; Social benefit is superior, and application prospect is good.
2, the intensity height after the valve heat treatment, high comprehensive performance, strength and toughness, plasticity no-float.Especially valve resistance to wears the cooperation of working surface (valve face, bar and rod end surface) hardness rationally, do not need to remake the technological measure of hardfacing alloy strengthening surface, make simple and easy, usability is good, life-span of resistance to wearing has improved more than 2 times, prolonged the maintenance interval of valve, can satisfy of the technical requirements of beeliner diesel engine development valve.
3, valve manufacture method advanced person, uniqueness, product precision height, effect are good.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Description of drawings
Fig. 1 is traditional intake valve structural representation.
Embodiment
The Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive of the present invention is for strengthening strong Martensite Steel MS41, and its chemical composition standard (wt%) is: C:0.38-0.50; Si:2.50-3.75; Mn≤0.80; Ni≤0.50; Cr:8.5-11.0; S≤0.002; P≤0.003; Mo:0.2-0.3; All the other are Fe.
Embodiment 1
The Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive of the present invention is for strengthening strong Martensite Steel MS41, and its chemical composition standard (wt%) can be chosen to be: C:0.35/0.4; Si:2.5/2.6; Mn:0.45/0.6; Ni≤0.50; Cr:10/10.5; S≤0.002; P≤0.003; Mo:0.25/0.3; All the other are Fe.
Embodiment 2
The Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive of the present invention is for strengthening strong Martensite Steel MS41, and its chemical composition standard (wt%) can be chosen to be: C:0.4/0.45; Si:2.6/2.8; Mn:0.35/0.45; Ni≤0.50; Cr:8.5/9.5; S≤0.002; P≤0.003; Mo:0.3; All the other are Fe.
Embodiment 3
The Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive of the present invention is for strengthening strong Martensite Steel MS41, and its chemical composition standard (wt%) can be chosen to be: C:0.4/0.5; Si:2.9/3.6; Mn:0.35/0.4; Ni≤0.50; Cr:9.5/10.5; S≤0.002; P≤0.003; Mo:0.2/0.25; All the other are Fe.
Under above-mentioned arbitrary embodiment's the chemical composition proportioning, the making method of the high reinforced intake valve of diesel engine of diesel locomotive is: get the raw materials ready → the valve blank electric upset forging is swaged into shape → heat treatment → machining
1, get the raw materials ready: will polish bar and be cut into fixed length, deformed end is made specific R
2, the valve blank electric upset forging is swaged into shape: when the electric heating upsetting, the forming temperature of the valve head of garlic is: 1050 ℃-1100 ℃, head of garlic strain rate is 1.5-2mm/s, and initial forging temperature is 1030 ℃-1080 ℃ during blank forming, and final forging temperature is 960 ℃-1020 ℃
3, heat treatment: 1030 ℃ of-1060 ℃/oil coolings of quenching temperature
520 ℃-620 ℃ of tempering temperatures
4, machining is traditional processing method, and processing sequence is: the outer garden of turning valve retainer, the plane of trying to get to the heart of a matter, baseline rod; Air valve cervix, locker slot part cnc profiling, Wai Yuan, end face, plane, inclined-plane, the conical surface, the grinding of R neck.
The above is preferred embodiment of the present invention, and all changes of doing according to technical solution of the present invention when the function that is produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (8)
1, the Manufacturing material of the high reinforced intake valve of a kind of diesel engine of diesel locomotive is characterized in that: it is the reinforced Martensite Steel, and its chemical composition standard (wt%) is: C:0.38-0.50; Si:2.50-3.75; Mn≤0.80; Ni≤0.50; Cr:8.50-11.0; S≤0.002; P≤0.003; Mo:0.2-0.3; All the other are Fe.
2, the Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive as claimed in claim 1 is characterized in that: its chemical composition standard (wt%) can be chosen to be: C:0.35/0.4; Si:2.5/2.6; Mn:0.45/0.6; Ni≤0.50; Cr:10/10.5; S≤0.002; P≤0.003; Mo:0.25/0.3; All the other are Fe.
3, the Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive as claimed in claim 1 is characterized in that: its chemical composition standard (wt%) can be chosen to be: C:0.4/0.45; Si:2.6/2.8; Mn:0.35/0.45; Ni≤0.50; Cr:8.5/9.5; S≤0.002; P≤0.003; Mo:0.3; All the other are Fe.
4, the Manufacturing material of the high reinforced intake valve of diesel engine of diesel locomotive as claimed in claim 1 is characterized in that: its chemical composition standard (wt%) can be chosen to be: C:0.4/0.5; Si:2.9/3.6; Mn:0.35/0.4; Ni≤0.50; Cr:9.5/10.5; S≤0.002; P≤0.003; Mo:0.2/0.25; All the other are Fe.
5, the making method of the high reinforced intake valve of a kind of diesel engine of diesel locomotive, it is characterized in that: its flow process is: get the raw materials ready → the valve blank electric upset forging is swaged into shape → heat treatment → machining.
6, the making method of the high reinforced intake valve of combustion locomotive diesel engine as claimed in claim 5, it is characterized in that: the valve blank electric upset forging is swaged into shape and is: when the electric heating upsetting, the forming temperature of the valve head of garlic is: 1050 ℃-1100 ℃, head of garlic strain rate is 1.5-2mm/s, initial forging temperature is 1030 ℃-1080 ℃ during blank forming, and final forging temperature is 960 ℃-1020 ℃.
7, the making method of the high reinforced intake valve of combustion locomotive diesel engine as claimed in claim 5, it is characterized in that: heat treatment is: 1030 ℃ of-1060 ℃/oil coolings of quenching temperature, 520 ℃-620 ℃ of tempering temperatures.
8, the making method of the high reinforced intake valve of combustion locomotive diesel engine as claimed in claim 5, it is characterized in that: machining process is: the outer garden of turning valve retainer, the plane of trying to get to the heart of a matter, baseline rod; Air valve cervix, locker slot part cnc profiling, Wai Yuan, end face, plane, inclined-plane, the conical surface, the grinding of R neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031237967A CN1281852C (en) | 2003-06-02 | 2003-06-02 | Reinforcing air intake valve for diesel engine of diesel locomotive and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031237967A CN1281852C (en) | 2003-06-02 | 2003-06-02 | Reinforcing air intake valve for diesel engine of diesel locomotive and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1453459A true CN1453459A (en) | 2003-11-05 |
| CN1281852C CN1281852C (en) | 2006-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031237967A Expired - Lifetime CN1281852C (en) | 2003-06-02 | 2003-06-02 | Reinforcing air intake valve for diesel engine of diesel locomotive and its manufacture |
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| CN (1) | CN1281852C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045949A (en) * | 2012-12-31 | 2013-04-17 | 宝鼎重工股份有限公司 | Large marine high strength corrosion-resistant stainless-steel exhaust valve seat with internal orifice diameter of larger than 220 mm |
| CN104372149A (en) * | 2014-10-24 | 2015-02-25 | 无锡市派克重型铸锻有限公司 | Forging method for improving impact property of heat-resisting martensite steel |
| CN104831184A (en) * | 2015-05-24 | 2015-08-12 | 王华美 | Engine cylinder valve group |
| CN106282783A (en) * | 2016-10-18 | 2017-01-04 | 江苏上淮动力有限公司 | The inlet and exhaust valve seat ring of electromotor and inlet and exhaust valve combination |
| CN106401686A (en) * | 2016-12-21 | 2017-02-15 | 湖南天雁机械有限责任公司 | Enhanced engine valve and manufacturing process thereof |
| CN110293379A (en) * | 2019-07-24 | 2019-10-01 | 济南沃德汽车零部件有限公司 | A kind of processing method of martensite steel inlet valve discone antenna surface |
| CN110527812A (en) * | 2019-09-02 | 2019-12-03 | 特冶(北京)科技发展有限公司 | A kind of high temperature resistant bimetallic valve valve stem and and its production method |
-
2003
- 2003-06-02 CN CNB031237967A patent/CN1281852C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045949A (en) * | 2012-12-31 | 2013-04-17 | 宝鼎重工股份有限公司 | Large marine high strength corrosion-resistant stainless-steel exhaust valve seat with internal orifice diameter of larger than 220 mm |
| CN103045949B (en) * | 2012-12-31 | 2015-02-04 | 宝鼎重工股份有限公司 | Large marine high strength corrosion-resistant stainless-steel exhaust valve seat with internal orifice diameter of larger than 220 mm |
| CN104372149A (en) * | 2014-10-24 | 2015-02-25 | 无锡市派克重型铸锻有限公司 | Forging method for improving impact property of heat-resisting martensite steel |
| CN104831184A (en) * | 2015-05-24 | 2015-08-12 | 王华美 | Engine cylinder valve group |
| CN104831184B (en) * | 2015-05-24 | 2016-08-24 | 普创新能源动力科技有限公司 | A kind of valve for engine group |
| CN105925885A (en) * | 2015-05-24 | 2016-09-07 | 王华美 | Automobile engine cylinder valve group |
| CN106282783A (en) * | 2016-10-18 | 2017-01-04 | 江苏上淮动力有限公司 | The inlet and exhaust valve seat ring of electromotor and inlet and exhaust valve combination |
| CN106401686A (en) * | 2016-12-21 | 2017-02-15 | 湖南天雁机械有限责任公司 | Enhanced engine valve and manufacturing process thereof |
| CN110293379A (en) * | 2019-07-24 | 2019-10-01 | 济南沃德汽车零部件有限公司 | A kind of processing method of martensite steel inlet valve discone antenna surface |
| CN110293379B (en) * | 2019-07-24 | 2021-03-12 | 济南沃德汽车零部件有限公司 | Treatment method for martensite steel inlet valve disc conical surface |
| CN110527812A (en) * | 2019-09-02 | 2019-12-03 | 特冶(北京)科技发展有限公司 | A kind of high temperature resistant bimetallic valve valve stem and and its production method |
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| Publication number | Publication date |
|---|---|
| CN1281852C (en) | 2006-10-25 |
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