CN103934623A - Valve seat exhaust duct inner wall sleeve embedding repairing technology - Google Patents
Valve seat exhaust duct inner wall sleeve embedding repairing technology Download PDFInfo
- Publication number
- CN103934623A CN103934623A CN201410176312.8A CN201410176312A CN103934623A CN 103934623 A CN103934623 A CN 103934623A CN 201410176312 A CN201410176312 A CN 201410176312A CN 103934623 A CN103934623 A CN 103934623A
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- CN
- China
- Prior art keywords
- valve seat
- exhaust duct
- cover
- car
- edge cover
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
Abstract
The invention discloses the valve seat exhaust duct inner wall sleeve embedding repairing technology. The technology is achieved by executing the following steps of removing defects on the inner wall of an exhaust duct in a lathing mode, matching the exhaust duct with a repairing sleeve in a lathing mode, calculating the magnitude of interference, removing flash and burrs, conducting scrubbing, enabling a thermal insulation steel sleeve to comprehensively fit a hole, and conducting natural cooling so that interference fit can be achieved. Machines of the SULZERRT series and machines of similar types are repaired through the method that 4Gr9Si2 or similar thermal insulation steel sleeves are embedded, sleeve embedding repairing is convenient and easy, and no deformation can be caused to workpieces; meanwhile, the thickness of the inner wall of the valve seat exhaust duct where sleeve embedding is conducted is guaranteed, and the requirement for normal use can be completely met.
Description
Technical field
the present invention is specifically related to a kind of valve seat exhaust duct inwall edge cover renovation technique.
Background technology
valve seat exhaust duct is subject to the corrosion of high-temperature fuel gas deflation and combustion product, and exhaust duct inwall tends to attenuation or indentation injustice, need to return to standard size.For the method for resizing after the corrosion permission employing inner wall overlaying of steel valve seat, if but bonding area is excessive, and can cause overall gross distortion to be scrapped because welding stress is excessive; In addition, also exist valve seat body material special, situation about cannot weld; Above-mentioned situation is common in the valve seat of SULZER RT series.
Summary of the invention
Goal of the invention: the present invention occurs heavy corrosion situation in view of air bleeding valve inwall, do not affecting under the prerequisite of service property (quality), a kind of valve seat exhaust duct inwall edge cover renovation technique is provided, and is that a kind of cover of inlaying is repaired for to being difficult for welding or cannot large-area welding and the conveniently restorative procedure researched and developed.
Technical scheme: a kind of valve seat exhaust duct inwall edge cover renovation technique, comprises the steps:
A) the valve seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) in conjunction with hole dimension in the valve seat exhaust duct of measuring, select heat-resisting steel material, car is joined reparation cover;
C) endoporus of heat-resisting steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.10-0.15mm;
D) before edge cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) remove the burr for the treatment of edge cover valve seat exhaust duct endoporus and repairing cover;
F) will treat edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping with alcohol;
G) be heated to after 250 DEG C-350 DEG C until edge cover valve seat, will repair and overlap horizontal positioned, knock gently with copper rod, vertically exert oneself, guarantee heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
As optimization, described reparation cover is 4Cr9Si2 or similar heat-resisting steel bushing.
As optimization, after described exhaust duct car, the cylindrical magnitude of interference of inner diameter and reparation cover is at 0.12mm.
As optimization, after described exhaust duct car, the cylindrical magnitude of interference of inner diameter and reparation cover is at 0.13mm.
As optimization, described step g) in treat that edge cover valve seat is heated to 300 DEG C.
Beneficial effect: the present invention is directed to SULZER RT series and similar model, adopt the method for edge 4Cr9Si2 or similar heat-resisting steel bushing to repair, edge cover is repaired convenient and simple, can not cause the distortion of workpiece, simultaneously, valve seat exhaust duct inner wall thickness after edge cover has had guarantee, can meet normal use completely.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be described in detail.
Specific embodiment 1:
A kind of valve seat exhaust duct inwall edge cover renovation technique, comprises the steps:
A) the seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) hole dimension in the valve seat exhaust duct of measuring, selects heat-resisting steel material, and car is joined reparation cover; Repair cover for 4Cr9Si2 or similar heat-resisting steel bushing;
C) endoporus of hot steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.10mm;
D) before cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) except treating edge cover valve seat exhaust duct endoporus and repairing the burr overlapping;
F) alcohol will be treated edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping;
G) edge cover valve seat is heated to after 250 DEG C, will repair and overlap horizontal positioned, knocks gently with copper rod, vertically exerts oneself, and guarantees heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
Specific embodiment 2:
A kind of valve seat exhaust duct inwall edge cover renovation technique, comprises the steps:
A) the seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) hole dimension in the valve seat exhaust duct of measuring, selects heat-resisting steel material, and car is joined reparation cover; Repair cover for 4Cr9Si2 or similar heat-resisting steel bushing;
C) endoporus of hot steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.15mm;
D) before cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) except treating edge cover valve seat exhaust duct endoporus and repairing the burr overlapping;
F) alcohol will be treated edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping;
G) edge cover valve seat is heated to after 350 DEG C, will repair and overlap horizontal positioned, knocks gently with copper rod, vertically exerts oneself, and guarantees heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
Specific embodiment 3:
A kind of valve seat exhaust duct inwall edge cover renovation technique, comprises the steps:
A) the seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) hole dimension in the valve seat exhaust duct of measuring, selects heat-resisting steel material, and car is joined reparation cover; Repair cover for 4Cr9Si2 or similar heat-resisting steel bushing;
C) endoporus of hot steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.12mm;
D) before cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) except treating edge cover valve seat exhaust duct endoporus and repairing the burr overlapping;
F) alcohol will be treated edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping;
G) edge cover valve seat is heated to after 300 DEG C, will repair and overlap horizontal positioned, knocks gently with copper rod, vertically exerts oneself, and guarantees heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
Specific embodiment 4:
A kind of valve seat exhaust duct inwall edge cover renovation technique, comprises the steps:
A) the seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) hole dimension in the valve seat exhaust duct of measuring, selects heat-resisting steel material, and car is joined reparation cover; Repair cover for 4Cr9Si2 or similar heat-resisting steel bushing;
C) endoporus of hot steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.13mm;
D) before cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) except treating edge cover valve seat exhaust duct endoporus and repairing the burr overlapping;
F) alcohol will be treated edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping;
G) edge cover valve seat is heated to after 320 DEG C, will repair and overlap horizontal positioned, knocks gently with copper rod, vertically exerts oneself, and guarantees heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
Claims (5)
1. a valve seat exhaust duct inwall edge cover renovation technique, is characterized in that: comprise the steps:
A) the valve seat Jiao Tiao center of getting on the bus, then car, except exhaust duct inner wall defect, is removed burr, clean endoporus, hole dimension in measuring, and record data; In pre-car process, as met cooling water hole, can not wear to water hole by car; Measure residue bulk material thickness simultaneously, if very thin thickness certainly will cause valve seat body strength decreased, do not advise the processing of follow-up edge cover;
B) in conjunction with hole dimension in the valve seat exhaust duct of measuring, select heat-resisting steel material, car is joined reparation cover;
C) endoporus of heat-resisting steel bushing processing is according to the drawing requirement of the valve seat that dispatches from the factory, guarantee after exhaust duct car inner diameter with the cylindrical magnitude of interference of repairing cover at 0.10-0.15mm;
D) before edge cover, again check respectively inner diameter and the cylindrical data of repairing cover after exhaust duct car, calculate the magnitude of interference;
E) remove the burr for the treatment of edge cover valve seat exhaust duct endoporus and repairing cover;
F) will treat edge cover valve seat exhaust duct endoporus and repair the cylindrical scrub overlapping with alcohol;
G) be heated to after 250 DEG C-350 DEG C until edge cover valve seat, will repair and overlap horizontal positioned, knock gently with copper rod, vertically exert oneself, guarantee heat resisting steel to be enclosed within hole and to fit comprehensively;
H) edge has overlapped, and the naturally cooling final vacuum of valve seat road endoporus and heat-resisting steel bushing can be realized interference fit.
2. valve seat exhaust duct inwall edge cover renovation technique as claimed in claim 1, is characterized in that: described reparation cover is 4Cr9Si2 or similar heat-resisting steel bushing.
3. valve seat exhaust duct inwall edge cover renovation technique as claimed in claim 1, is characterized in that: as optimization, after described exhaust duct car, the cylindrical magnitude of interference of inner diameter and reparation cover is at 0.12mm.
4. valve seat exhaust duct inwall edge cover renovation technique as claimed in claim 1, is characterized in that: as optimization, after described exhaust duct car, the cylindrical magnitude of interference of inner diameter and reparation cover is at 0.13mm.
5. valve seat exhaust duct inwall as claimed in claim 1 edge cover renovation technique, is characterized in that: as optimization, described step g) in treat that edge cover valve seat is heated to 300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410176312.8A CN103934623B (en) | 2014-04-29 | 2014-04-29 | Valve seat exhaust duct inwall insetting sleeve repair technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410176312.8A CN103934623B (en) | 2014-04-29 | 2014-04-29 | Valve seat exhaust duct inwall insetting sleeve repair technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103934623A true CN103934623A (en) | 2014-07-23 |
| CN103934623B CN103934623B (en) | 2016-08-31 |
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| CN201410176312.8A Expired - Fee Related CN103934623B (en) | 2014-04-29 | 2014-04-29 | Valve seat exhaust duct inwall insetting sleeve repair technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322233A (en) * | 2017-06-19 | 2017-11-07 | 重庆铁马工业集团有限公司 | Big machinery bench top is portalled method of worn |
| CN111360484A (en) * | 2020-04-11 | 2020-07-03 | 河南省煤科院耐磨技术有限公司 | Guide sleeve remanufacturing method based on variable-pressure low-temperature cold melting technology |
| CN112139753A (en) * | 2020-09-21 | 2020-12-29 | 新兴能源装备股份有限公司 | Rocker drill upright post and rocker hole strain repair process |
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| US4617711A (en) * | 1983-09-26 | 1986-10-21 | Mcminn William D | Method and apparatus for repairing automatic transmissions |
| WO1999064203A1 (en) * | 1998-06-09 | 1999-12-16 | Sarver Gary A | Method and apparatus for pulling bushings and bearings |
| CN101758362A (en) * | 2008-11-25 | 2010-06-30 | 上海宝钢设备检修有限公司 | Repairing method of master cylinder plunger piston of radial forging machine |
| CN102059502A (en) * | 2009-11-13 | 2011-05-18 | 广西玉柴机器股份有限公司 | Method for repairing bolt hole of cylinder cover |
| CN202317580U (en) * | 2011-11-16 | 2012-07-11 | 安徽天一重工股份有限公司 | Novel insert bush for repairing inner holes of continuous casting rollers |
| CN103212702A (en) * | 2013-05-08 | 2013-07-24 | 重庆钢铁(集团)有限责任公司 | Steel ladle trunnion and method for repairing steel ladle by using same |
-
2014
- 2014-04-29 CN CN201410176312.8A patent/CN103934623B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4617711A (en) * | 1983-09-26 | 1986-10-21 | Mcminn William D | Method and apparatus for repairing automatic transmissions |
| WO1999064203A1 (en) * | 1998-06-09 | 1999-12-16 | Sarver Gary A | Method and apparatus for pulling bushings and bearings |
| CN101758362A (en) * | 2008-11-25 | 2010-06-30 | 上海宝钢设备检修有限公司 | Repairing method of master cylinder plunger piston of radial forging machine |
| CN102059502A (en) * | 2009-11-13 | 2011-05-18 | 广西玉柴机器股份有限公司 | Method for repairing bolt hole of cylinder cover |
| CN202317580U (en) * | 2011-11-16 | 2012-07-11 | 安徽天一重工股份有限公司 | Novel insert bush for repairing inner holes of continuous casting rollers |
| CN103212702A (en) * | 2013-05-08 | 2013-07-24 | 重庆钢铁(集团)有限责任公司 | Steel ladle trunnion and method for repairing steel ladle by using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322233A (en) * | 2017-06-19 | 2017-11-07 | 重庆铁马工业集团有限公司 | Big machinery bench top is portalled method of worn |
| CN111360484A (en) * | 2020-04-11 | 2020-07-03 | 河南省煤科院耐磨技术有限公司 | Guide sleeve remanufacturing method based on variable-pressure low-temperature cold melting technology |
| CN111360484B (en) * | 2020-04-11 | 2021-09-14 | 河南省煤科院耐磨技术有限公司 | Guide sleeve remanufacturing method based on variable-pressure low-temperature cold melting technology |
| CN112139753A (en) * | 2020-09-21 | 2020-12-29 | 新兴能源装备股份有限公司 | Rocker drill upright post and rocker hole strain repair process |
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| CN103934623B (en) | 2016-08-31 |
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Granted publication date: 20160831 Termination date: 20200429 |