CN103710496A - Profile roller repairing method - Google Patents
Profile roller repairing method Download PDFInfo
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- CN103710496A CN103710496A CN201410014341.4A CN201410014341A CN103710496A CN 103710496 A CN103710496 A CN 103710496A CN 201410014341 A CN201410014341 A CN 201410014341A CN 103710496 A CN103710496 A CN 103710496A
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Abstract
The invention discloses a profile roller repairing method and relates to the field of rolling equipment maintenance. The service life of each part of a profile roller repaired by the profile roller repairing method is consistent. The profile roller repairing method comprises the following roller treatment steps: turning before welding, carrying out repair welding, turning machining after welding, flaw detection, surface pretreatment and laser strengthening treatment, wherein parameters of laser strengthening treatment include power, speed and spot diameter; and different laser strengthening treatment power, speeds and spot diameters are set during laser strengthening treatment according to the difference of passes, grooves and groove locations of the roller, so that the different passes, grooves and groove locations of the roller have different surface hardness and quenching layer hardness. The profile roller repairing method has the advantages that the overall hardness, the wear resistance, the corrosion resistance of the roller are improved, the serious wearing part can be used in the whole service cycle of the roller, and the service life of the roller is greatly prolonged.
Description
Technical field
The present invention relates to steel rolling equipment maintenance field, relate in particular to a kind of section roll restorative procedure.
Background technology
In the operation of rolling, roller body bears huge high speed alternation rolling pressure, and pass serious wear especially directly contacts with red steel, under the effect of cooling fluid, causes and colds and heat succeed each other, and has aggravated the wearing and tearing of roll.No matter which kind of section roll is all that in pass, the contact site degree of wear is serious.Therefore, roll requires to have certain red hardness, wear resistant corrosion resistant and fatigue resistance.The production of roll needs the multi-step process such as steel-making, forging and stamping, normalizing, and the production cycle is long, and manufacturing cost is expensive.Roller-changing also affects production efficiency, has indirectly increased production cost.Therefore breaker roll carries out surface laser strengthening, increases its hardness, wear-corrosion resistance very important
Laser Surface Treatment is at roller surface, to form the mixed structure of the uniform martensite of one deck and residual austenite and carbide, thereby increases hardness, the anticorrosive anti-wear performance of roller surface, extends its work-ing life.Traditional laser surface intensified processing is that each position of breaker roll adopts identical laser reinforcing parameter, generally as one man improves the surface hardness of roll.There is certain defect in this method, roll in the operation of rolling, each position unbalance stress of pass, cause roll wear degree to have very large difference, thereby the roll after this laser treatment, although obtained certain prolongation its work-ing life, but still there is the inhomogeneous phenomenon of wearing and tearing.
Summary of the invention
The technical problem to be solved in the present invention is: consistent section roll restorative procedure of each position life-span after a kind of roll reparation is provided.
For addressing the above problem the technical scheme of employing, be: section roll restorative procedure comprises the following processing that breaker roll carries out successively: turning before weldering, repair welding, postwelding turning processing, flaw detection, surface preparation, laser reinforcing are processed; The parameter that laser reinforcing is processed comprises power, speed and spot diameter; When laser reinforcing is processed according to the rod of roll not, groove, groove position difference arrange different laser reinforcing processing power, speed and spot diameter, make the different rod of roll not, groove, groove position have different surface hardnesses and quench-hardened case thickness.
The invention has the beneficial effects as follows: not only make roll integral hardness, wear-corrosion resistance be improved, and make serious wear position can reach the whole life cycle of roll, the work-ing life of greatly having improved roll.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Section roll restorative procedure comprises the following processing that breaker roll carries out successively: turning before weldering, repair welding, postwelding turning processing, flaw detection, surface preparation, laser reinforcing are processed; The parameter that laser reinforcing is processed comprises power, speed and spot diameter; When laser reinforcing is processed according to the rod of roll not, groove, groove position difference arrange different laser reinforcing processing power, speed and spot diameter, make the different rod of roll not, groove, groove position have different surface hardnesses and quench-hardened case thickness.
Section roll comprises top roll and lower roll, is respectively arranged with a plurality of grooves on top roll and lower roll, and the space after top roll and lower roll assembling between corresponding groove is roll pass, and groove consists of kerve, sidewall, fillet and slope.In the section roll operation of rolling, kerve, sidewall, fillet and slope stressing conditions are different.When laser reinforcing is processed according to the rod of roll not, groove, groove position difference arrange different laser reinforcing processing power, speed and spot diameter, can make different rods not, groove and groove position have different mechanical properties, make it adapt to different stressing conditions, make different rods not, groove is consistent with the groove position wear-out period, improves roll bulk life time.
Applicant, through the tracking investigation to the experience of the laser surface intensified processing of large-scale roller and breaker roll use for many years, show that different roll laser reinforcings are processed recommended parameters as follows:
When roll is BD1 roll, the different rods of roll not, groove, corresponding laser reinforcing processing power, speed and the spot diameter in groove position, and laser reinforcing process after roll different rods not, the surface hardness at groove, groove position and quench-hardened case thickness is as following table:
Roll is 950 rolls, and the different rods of roll are not, corresponding laser reinforcing processing power, speed and the spot diameter of groove, groove position be as following table:
For fear of occurring the place that do not have laser reinforcing to process, the position that a rear laser reinforcing is processed partly overlaps with the position of front laser reinforcing processing, and the width of lap is 0.5mm.
Claims (4)
1. section roll restorative procedure, comprises the following processing that breaker roll carries out successively: turning before weldering, repair welding, postwelding turning processing, flaw detection, surface preparation, laser reinforcing are processed; The parameter that laser reinforcing is processed comprises power, speed and spot diameter; It is characterized in that: when laser reinforcing is processed according to the rod of roll not, groove, groove position difference arrange different laser reinforcing processing power, speed and spot diameter, make the different rod of roll not, groove, groove position have different surface hardnesses and quench-hardened case thickness.
2. section roll restorative procedure according to claim 1, it is characterized in that: roll is BD1 roll, the different rods of roll not, groove, corresponding laser reinforcing processing power, speed and the spot diameter in groove position, and laser reinforcing process after roll different rods not, the surface hardness at groove, groove position and quench-hardened case thickness is as following table:
3. section roll restorative procedure according to claim 1, is characterized in that: roll is 950 rolls, and the different rods of roll are not, corresponding laser reinforcing processing power, speed and the spot diameter of groove, groove position be as following table:
4. according to the section roll restorative procedure described in claims 1 to 3 any one, it is characterized in that: the position that the position that a rear laser reinforcing is processed and a front laser reinforcing are processed partly overlaps, and the width of lap is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014341.4A CN103710496B (en) | 2014-01-13 | 2014-01-13 | Section roll restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410014341.4A CN103710496B (en) | 2014-01-13 | 2014-01-13 | Section roll restorative procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103710496A true CN103710496A (en) | 2014-04-09 |
| CN103710496B CN103710496B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410014341.4A Active CN103710496B (en) | 2014-01-13 | 2014-01-13 | Section roll restorative procedure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244794A (en) * | 2016-08-31 | 2016-12-21 | 国核宝钛锆业股份公司 | A kind of method improving the cold pilger mill pass life-span |
Citations (10)
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|---|---|---|---|---|
| JPS5947524A (en) * | 1982-09-07 | 1984-03-17 | Ntn Toyo Bearing Co Ltd | Roller bearing surface-hardened by laser beam machining |
| JPH03219024A (en) * | 1990-01-22 | 1991-09-26 | Brother Ind Ltd | Laser beam quenching method |
| JPH0860250A (en) * | 1994-08-12 | 1996-03-05 | Mitsubishi Heavy Ind Ltd | Corrugated surface roll and manufacture thereof |
| CN1126763A (en) * | 1995-01-13 | 1996-07-17 | 北京莱赛新技术公司 | Laser treatment process of roller surface |
| CN1851005A (en) * | 2006-05-25 | 2006-10-25 | 广州富通光科技术有限公司 | Roll laser reinforcing quenching technological method |
| CN101003847A (en) * | 2006-09-22 | 2007-07-25 | 攀钢集团钢城企业总公司协力公司 | Laser surface intensified technique for roller of rolling section bar |
| CN101225463A (en) * | 2008-01-30 | 2008-07-23 | 天津烨峤激光技术有限公司 | Method for restoring and improving service life of hot roller and cold rolling subsidiary roller |
| CN102002707A (en) * | 2010-11-25 | 2011-04-06 | 秦皇岛洪川实业有限公司 | Laser repairing method of damaged finishing roller |
| CN102010940A (en) * | 2010-12-24 | 2011-04-13 | 攀枝花钢城集团有限公司 | Laser surface treatment method of pass roll |
| CN102441760A (en) * | 2011-11-07 | 2012-05-09 | 山西鼎荣冷弯型钢有限公司 | Cold-bending roller welding repair method |
-
2014
- 2014-01-13 CN CN201410014341.4A patent/CN103710496B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947524A (en) * | 1982-09-07 | 1984-03-17 | Ntn Toyo Bearing Co Ltd | Roller bearing surface-hardened by laser beam machining |
| JPH03219024A (en) * | 1990-01-22 | 1991-09-26 | Brother Ind Ltd | Laser beam quenching method |
| JPH0860250A (en) * | 1994-08-12 | 1996-03-05 | Mitsubishi Heavy Ind Ltd | Corrugated surface roll and manufacture thereof |
| CN1126763A (en) * | 1995-01-13 | 1996-07-17 | 北京莱赛新技术公司 | Laser treatment process of roller surface |
| CN1851005A (en) * | 2006-05-25 | 2006-10-25 | 广州富通光科技术有限公司 | Roll laser reinforcing quenching technological method |
| CN101003847A (en) * | 2006-09-22 | 2007-07-25 | 攀钢集团钢城企业总公司协力公司 | Laser surface intensified technique for roller of rolling section bar |
| CN101225463A (en) * | 2008-01-30 | 2008-07-23 | 天津烨峤激光技术有限公司 | Method for restoring and improving service life of hot roller and cold rolling subsidiary roller |
| CN102002707A (en) * | 2010-11-25 | 2011-04-06 | 秦皇岛洪川实业有限公司 | Laser repairing method of damaged finishing roller |
| CN102010940A (en) * | 2010-12-24 | 2011-04-13 | 攀枝花钢城集团有限公司 | Laser surface treatment method of pass roll |
| CN102441760A (en) * | 2011-11-07 | 2012-05-09 | 山西鼎荣冷弯型钢有限公司 | Cold-bending roller welding repair method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106244794A (en) * | 2016-08-31 | 2016-12-21 | 国核宝钛锆业股份公司 | A kind of method improving the cold pilger mill pass life-span |
| CN106244794B (en) * | 2016-08-31 | 2018-01-12 | 国核宝钛锆业股份公司 | A kind of method for improving the cold pilger mill pass life-span |
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| Publication number | Publication date |
|---|---|
| CN103710496B (en) | 2016-04-20 |
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Effective date of registration: 20210809 Address after: 610400 Chengdu Ruiyang metal products Co., Ltd., Jintang Industrial Park, Zhao town, Jintang County, Chengdu City, Sichuan Province Patentee after: Chengdu Ruiyang metal products Co.,Ltd. Address before: 617023, kapok Road, 72, Panzhihua, Sichuan Patentee before: PANZHIHUA GANGCHENG GROUP Co.,Ltd. |