CN101967551A - Laser strengthening device and strengthening method for valve seat ring of cylinder head - Google Patents
Laser strengthening device and strengthening method for valve seat ring of cylinder head Download PDFInfo
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- CN101967551A CN101967551A CN2010102899771A CN201010289977A CN101967551A CN 101967551 A CN101967551 A CN 101967551A CN 2010102899771 A CN2010102899771 A CN 2010102899771A CN 201010289977 A CN201010289977 A CN 201010289977A CN 101967551 A CN101967551 A CN 101967551A
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- valve retainer
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
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Abstract
The invention discloses a laser strengthening device and a laser strengthening method for a valve seat ring of a cylinder head. The strengthening device mainly comprises an argon tank (1), a nozzle (3), a laser head (4), the valve seat ring (5), the cylinder head (7), a robot (8) and a worktable (9), wherein the cylinder head (7) is arranged on the worktable (9) and is provided with the valve seat ring (5); the robot (8) is arranged on the right side of the worktable (9); the laser head (4) is connected with the robot (8) through a transmission line (6); the argon tank (1) is arranged on the left side of the worktable (9); and the nozzle (3) is connected with the argon tank (1) through an air delivery pipe (2). The laser strengthening device and the laser strengthening method have the advantages of high operability, high strengthening speed, high quality of a strengthened area, and the like, can effectively strengthen the valve seat ring of the vermicular graphite cast iron cylinder head and can be widely applied to the strengthening of various annular parts.
Description
Technical field
The invention belongs to a kind of engine laser reinforcing device and enhancement method thereof, be specifically related to a kind of laser reinforcing device and enhancement method thereof of cylinder head valve retainer.
Background technology
The design objective of the high reinforcement of new work engine, high compactness proposes higher requirement to selection, structure design and the thermal treatment process of its component.For satisfying the work-ing life of new work engine, cylinder head is selected the good perlite vermicular graphite iron material of comprehensive mechanical property for use, and valve retainer is directly machine-shaping on overall cylinder cover.Valve retainer at high temperature stands erosion, the oxidation of impact, beating, wearing and tearing and the intake and exhaust stream of valve, its working conditions and abominable, its quality directly influences the performance and the reliability of engine, and guarantees that the gordian technique of its high reliability work is to make it have specific hardness value and depth of enhanced layer.Because perlite vermicular graphite iron material HRC hardness in 4～8 scopes, can not satisfy the valve retainer environment for use, therefore be badly in need of carrying out the research work of valve retainer phase transformation strengthening.
Phase transformation strengthening method to the perlite vermicular graphite iron material has high-frequency induction reinforcement, flame to strengthen two kinds of methods at present, there is complex process in these two kinds of methods at integrally-built local strengthening, be difficult to accurately realize the defective that strengthen the specific region, and it is low to produce cylinder head valve retainer power density, needs secondary processing just can use.
Summary of the invention
It is simple that technical problem to be solved by this invention provides a kind of working method, and reinforcement speed is fast, the measured head valve seat ring of strengthening region matter laser reinforcing method and laser reinforcing device thereof.
Technical scheme of the present invention: a kind of laser reinforcing device of cylinder head valve retainer, it mainly comprises argon tanks 1, nozzle 3, laser head 4, valve retainer 5, cylinder head 7, robot 8 and worktable 9, cylinder head 7 is arranged on the worktable 9, cylinder head 7 is provided with valve retainer 5, the right side of worktable 9 is provided with robot 8, laser head 4 is connected with robot 8 by transmission line 6, the left side of worktable is provided with argon tanks 1, nozzle 3 is connected with argon tanks 1 by pneumatic tube 2, the medullary ray of nozzle 3 and cylinder head 7 fire power face normal directions angle at 45, laser head 4 is arranged on the top of valve retainer 5.
2, a kind of laser reinforcing method of cylinder head valve retainer, it may further comprise the steps:
A, clean vermicular cast iron cylinder head valve retainer greasy dirt with acetone;
B, placement cylinder head 7 are on worktable 9;
C, adjust the spot center of laser heads 4 and the ring section center-aligned of the valve retainer 5 that needs to strengthen by robot 8;
The laser power density of d, adjusting laser head 4 is at 110～132W/mm
2, laser reinforcing speed is 10mm/s, described laser is the Nd:YAG Solid State Laser;
E, make the argon gas in the argon tanks 1 blow to the strengthening region of valve retainer 5 protections, air blowing angle and cylinder head 7 fire power face normal directions angle at 45 from the side by shower nozzle 3;
The laser and the robot 8 of laser head 4 opened in f, reinforcement beginning simultaneously, driving laser head 4 by robot 8 moves, laser passes through the strengthening region, strengthen ending and turn off the laser of laser head 4 earlier, hysteresis 0.5s turns off robot 8, promptly finish the laser reinforcing method, the hardness of the cylinder head valve retainer after the reinforcement is 50～70HRC.The present invention compared with prior art has following beneficial effect: the present invention is by the laser reinforcing process to vermicular cast iron cylinder head valve retainer, its layer depth and hardness have been improved, cylinder head valve retainer surface quality after the reinforcement is good, does not need processing for the second time just can directly use.Have advantages such as workable, that reinforcement speed fast, the strengthening region quality is good, can strengthen vermicular cast iron cylinder head valve retainer effectively, and can be widely used in the reinforcement of various ring-shaped work pieces.
Description of drawings
Fig. 1 is the structural representation of laser reinforcing device of the present invention.
Embodiment
As shown in Figure 1, the laser reinforcing device of above-mentioned cylinder head valve retainer, it mainly comprises argon tanks 1, nozzle 3, laser head 4, valve retainer 5, cylinder head 7, robot 8 and worktable 9, cylinder head 7 is arranged on the worktable 9, cylinder head 7 is provided with valve retainer 5, the right side of worktable 9 is provided with robot 8, laser head 4 is connected with robot 8 by transmission line 6, the left side of worktable is provided with argon tanks 1, nozzle 3 is connected with argon tanks 1 by pneumatic tube 2, the medullary ray of nozzle 3 and cylinder head 7 fire power face normal directions angle at 45, laser head 4 is arranged on the top of valve retainer 5.The laser reinforcing method of above-mentioned cylinder head valve retainer, it may further comprise the steps:
A, clean vermicular cast iron cylinder head valve retainer greasy dirt with acetone;
B, placement cylinder head 7 are on worktable 9;
C, adjust the spot center of laser heads 4 and the ring section center-aligned of the valve retainer 5 that needs to strengthen by robot 8;
The laser power density of d, adjusting laser head 4 is at 110～132W/mm2, and laser reinforcing speed is 10mm/s, and described laser is the Nd:YAG Solid State Laser;
E, make the argon gas in the argon tanks 1 blow to the strengthening region of valve retainer 5 protections, air blowing angle and cylinder head 7 fire power face normal directions angle at 45 from the side by shower nozzle 3;
The laser and the robot 8 of laser head 4 opened in f, reinforcement beginning simultaneously, drives laser heads 4 by robot 8 and moves, and laser is by the strengthening region, and strengthening finishes up turns off the laser of laser head 4 earlier, and hysteresis 0.5s turns off robot 8, promptly finishes the laser reinforcing method.
In the aforesaid method, be 132W/mm2 when regulating laser power density, it is 10mm/s that laser reinforcing speed is set, and the hardness of the cylinder head valve retainer after the reinforcement is respectively 60,62 and 65HRC, and depth of enhanced layer is 0.65mm.
When regulating laser power density is 120W/mm2, and it is 10mm/s that laser reinforcing speed is set, and the hardness of the cylinder head valve retainer after the reinforcement is respectively 57,59 and 60HRC, and depth of enhanced layer is 0.59mm.
When regulating laser power density is 110W/mm2, and it is 10mm/s that laser reinforcing speed is set, and the hardness of the cylinder head valve retainer after the reinforcement is respectively 55,56 and 59HRC, depth of enhanced layer 0.53mm.
Claims (2)
1. the laser reinforcing device of a cylinder head valve retainer, it mainly comprises argon tanks (1), nozzle (3), laser head (4), valve retainer (5), cylinder head (7), robot (8) and worktable (9), it is characterized in that cylinder head (7) is arranged on the worktable (9), cylinder head (7) is provided with valve retainer (5), the right side of worktable (9) is provided with robot (8), laser head (4) is connected with robot (8) by transmission line (6), the left side of worktable is provided with argon tanks (1), nozzle (3) is connected with argon tanks (1) by pneumatic tube (2), the medullary ray of nozzle (3) and cylinder head (7) fire power face normal direction angle at 45, laser head (4) is arranged on the top of valve retainer (5).
2. the laser reinforcing method of a cylinder head valve retainer is characterized in that it may further comprise the steps:
A, clean vermicular cast iron cylinder head valve retainer greasy dirt with acetone;
B, placement cylinder head (7) are on worktable (9);
C, adjust the spot center of laser head (4) and the ring section center-aligned of the valve retainer (5) that needs to strengthen by robot (8);
The laser power density of d, adjusting laser head (4) is at 110～132W/mm
2, laser reinforcing speed is 10mm/s, described laser is the Nd:YAG Solid State Laser;
E, make the argon gas in the argon tanks (1) blow to the strengthening region that valve retainer (5) is protected, air blowing angle and cylinder head (7) fire power face normal direction angle at 45 from the side by shower nozzle (3);
The laser and the robot (8) of laser head (4) opened in f, reinforcement beginning simultaneously, driving laser head (4) by robot (8) moves, laser passes through the strengthening region, strengthen ending and turn off the laser of laser head (4) earlier, hysteresis 0.5s turns off robot (8), promptly finish the laser reinforcing method, the hardness of the cylinder head valve retainer after the reinforcement is 50～70HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102899771A CN101967551A (en) | 2010-09-18 | 2010-09-18 | Laser strengthening device and strengthening method for valve seat ring of cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102899771A CN101967551A (en) | 2010-09-18 | 2010-09-18 | Laser strengthening device and strengthening method for valve seat ring of cylinder head |
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| CN101967551A true CN101967551A (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102899771A Pending CN101967551A (en) | 2010-09-18 | 2010-09-18 | Laser strengthening device and strengthening method for valve seat ring of cylinder head |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218659A (en) * | 2011-05-25 | 2011-10-19 | 中国兵器工业集团第七○研究所 | Method for sealing conical surface by reaming and grinding cylinder cover valve |
| CN102220457A (en) * | 2011-05-25 | 2011-10-19 | 中国兵器工业集团第七○研究所 | Method for inhibiting laser melting and strengthening ending defects of valve seat ring |
| CN103740894A (en) * | 2013-12-31 | 2014-04-23 | 唐山轨道客车有限责任公司 | Laser shock strengthening device and water spray pipe thereof |
| CN105385833A (en) * | 2015-12-14 | 2016-03-09 | 中国北方发动机研究所(天津) | Modifying, thermal-treatment and preheating device for valve seat ring of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57152419A (en) * | 1981-03-13 | 1982-09-20 | Nissan Motor Co Ltd | Production of valve seat for cylinder head made of cast iron |
| CN2053964U (en) * | 1988-12-29 | 1990-03-07 | 李鲁伯 | Universal type multifunction laser machining tool |
| CN1372015A (en) * | 2001-02-21 | 2002-10-02 | 中国科学院金属研究所 | Technology method for laser direct forming copper base alloy valve holder on car engine cylinder cover |
| CN101153353A (en) * | 2006-09-25 | 2008-04-02 | 韦斌 | Application of laser heat treatment technology in cylinder cover surface |
| CN101368226A (en) * | 2007-08-17 | 2009-02-18 | 中国第一汽车集团公司 | Tooth ring tooth surface laser induration processing method |
-
2010
- 2010-09-18 CN CN2010102899771A patent/CN101967551A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57152419A (en) * | 1981-03-13 | 1982-09-20 | Nissan Motor Co Ltd | Production of valve seat for cylinder head made of cast iron |
| CN2053964U (en) * | 1988-12-29 | 1990-03-07 | 李鲁伯 | Universal type multifunction laser machining tool |
| CN1372015A (en) * | 2001-02-21 | 2002-10-02 | 中国科学院金属研究所 | Technology method for laser direct forming copper base alloy valve holder on car engine cylinder cover |
| CN101153353A (en) * | 2006-09-25 | 2008-04-02 | 韦斌 | Application of laser heat treatment technology in cylinder cover surface |
| CN101368226A (en) * | 2007-08-17 | 2009-02-18 | 中国第一汽车集团公司 | Tooth ring tooth surface laser induration processing method |
Non-Patent Citations (1)
| Title |
|---|
| 彭惠民: "激光应用漫谈", 《铁道知识》, no. 2, 31 December 1994 (1994-12-31), pages 42 - 43 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218659A (en) * | 2011-05-25 | 2011-10-19 | 中国兵器工业集团第七○研究所 | Method for sealing conical surface by reaming and grinding cylinder cover valve |
| CN102220457A (en) * | 2011-05-25 | 2011-10-19 | 中国兵器工业集团第七○研究所 | Method for inhibiting laser melting and strengthening ending defects of valve seat ring |
| CN103740894A (en) * | 2013-12-31 | 2014-04-23 | 唐山轨道客车有限责任公司 | Laser shock strengthening device and water spray pipe thereof |
| CN105385833A (en) * | 2015-12-14 | 2016-03-09 | 中国北方发动机研究所(天津) | Modifying, thermal-treatment and preheating device for valve seat ring of engine |
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Application publication date: 20110209 |