CN106244794A - A kind of method improving the cold pilger mill pass life-span - Google Patents
A kind of method improving the cold pilger mill pass life-span Download PDFInfo
- Publication number
- CN106244794A CN106244794A CN201610784534.7A CN201610784534A CN106244794A CN 106244794 A CN106244794 A CN 106244794A CN 201610784534 A CN201610784534 A CN 201610784534A CN 106244794 A CN106244794 A CN 106244794A
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- China
- Prior art keywords
- laser
- pass
- territory
- impact intensified
- span
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
Abstract
A kind of method improving the cold pilger mill pass life-span disclosed by the invention, including step: the cold rolling pass of finished product after fine grinding is carried out examination and rolls, it is ensured that cold rolling pass meets rolling requirements；Using the maximum weighted region of pass groove as territory, Laser Shock Processing, respectively increase by a panel region in both sides, territory, Laser Shock Processing as laser impact intensified border transition region；Territory, Laser Shock Processing and laser impact intensified border transition region are carried out laser impact intensified process.Reiforcing laser impact technology is combined by a kind of method improving the cold pilger mill pass life-span of the present invention with cold rolling pass method, by cold pilger mill pass being carried out the laser impact intensified anti-fatigue performance processing the cold rolling pass groove stress area of raising, so that pass significantly improves service life, metal pipe material Rolling Production efficiency is substantially improved because of the decline of pass replacement frequency, and the rolling cost of metal pipe material declines the most at double.
Description
Technical field
The invention belongs to metal pipe material cold rolling technology field, be specifically related to a kind of side improving the cold pilger mill pass life-span
Method.
Background technology
Rolling is the molding mode that metal pipe material is main, rolls by installing a pair annular distance type on milling train, passes through
Upper and lower a pair Varied section pass and taper core print, repeat change each other in head back and forth movement, make pipe diameter reduce,
Wall thickness is thinning.During tube rolling, cold rolling pass groove institute tension stress (along the component that pass groove is horizontal) has a cycle and follows
Ring property, can cause pass to occur that fatigue cracking lost efficacy, and this is the Main Patterns of cold pilger mill pass failure damage.Cold rolling pass
On the one hand restriction Rolling Production efficiency in service life, be on the other hand also that tube rolling produces maximum consumables cost source.
Summary of the invention
It is an object of the invention to provide a kind of method improving the cold pilger mill pass life-span, solve due to existing cold
Roll pass service life low thus increase rolling cost the problem restricting production efficiency.
The technical solution adopted in the present invention is: a kind of method improving the cold pilger mill pass life-span, comprises the following steps:
The first step, carries out examination to the cold rolling pass of finished product after fine grinding and rolls, it is ensured that cold rolling pass meets rolling quality requirement；
Second step, using the maximum weighted region of pass groove as territory, Laser Shock Processing, in territory, Laser Shock Processing
Both sides respectively increase by a panel region as laser impact intensified border transition region；
3rd step, is carried out the territory, Laser Shock Processing determined in second step and laser impact intensified border transition region
Laser impact intensified process.
The feature of the present invention also resides in,
In second step, the determination method in laser impact intensified border transition region is: for maximum weighted region, with its ET
Position determines circumferential angle scope for anchor point, then obtains territory, Laser Shock Processing, each in both sides, territory, Laser Shock Processing
Increase by 5 °-8 ° as laser impact intensified border transition region.
Carrying out in 3rd step in laser impact intensified processing procedure, the intensity of laser-impact is along laser impact intensified border mistake
Cross the side near territory, Laser Shock Processing, the region successively decrease to the dimension linear away from side, territory, Laser Shock Processing until
It is zero.
When carrying out laser impact intensified to territory, Laser Shock Processing in the 3rd step, laser energy is 2J-20J, pulse width
Degree is 5ns-50ns, and effect spot diameter is 1.0mm-5.0mm, and hot spot overlapping rate is 10%-90%.
Laser impact intensified in 3rd step is repeatedly overlapping strengthening.
The invention has the beneficial effects as follows: a kind of method improving the cold pilger mill pass life-span of the present invention solves due to existing
The cold rolling pass service life having is low thus increases rolling cost the problem restricting production efficiency.The one of the present invention improves cold
Reiforcing laser impact technology is combined by the method in pipe mill pass life-span with cold rolling pass method, by cold pilger mill pass
Carry out the laser impact intensified anti-fatigue performance processing and improving cold rolling pass groove stress area, so that pass becomes service life
Improving again, metal pipe material Rolling Production efficiency is substantially improved because of the decline of pass replacement frequency, and the rolling of metal pipe material
Cost declines the most at double.
Accompanying drawing explanation
Fig. 1 is the laser-impact that a kind of method improving the cold pilger mill pass life-span of the present invention acts on cold rolling pass groove
Strengthening region schematic diagram；
It is strong that Fig. 2 is that a kind of method improving the cold pilger mill pass life-span of the present invention acts on cold rolling pass groove laser-impact
Change regional perspective schematic diagram；
Fig. 3 is that a kind of method improving the cold pilger mill pass life-span of the present invention carries out laser impact intensified rear pass groove table
Layer participates in stress comparison diagram.
In figure, 1. pass, 2. keyway, 3. tag slot, 4. pass groove, 5. laser treated regions, 5-1. is laser impact intensified
Region, 5-2. laser impact intensified border transition region.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
A kind of method improving the cold pilger mill pass life-span that the present invention provides comprises the following steps:
The first step, carries out examination to the cold rolling pass of finished product 1 after fine grinding and rolls, it is ensured that cold rolling pass 1 meets rolling quality requirement,
I.e. rolled by examination and guarantee that the cold rolling pass 1 made need to meet design requirement；
Second step, sees Fig. 1 and Fig. 2, pass 1 is provided with keyway 2, tag slot 3 and pass groove 4, according to pass groove 4
Position using the maximum weighted region of pass groove 4 as territory, Laser Shock Processing 5-1, in 5-1 both sides, territory, Laser Shock Processing
Each panel region that increases is as laser impact intensified border transition region 5-2, territory, Laser Shock Processing 5-1 and two pieces of laser punchings
Hit strengthening border transition region 5-2 and collectively form laser treated regions 5；
3rd step, to territory, the Laser Shock Processing 5-1 determined in second step and laser impact intensified border transition region
5-2 carries out laser impact intensified process.
Example, in second step, the determination method in laser impact intensified border transition region is: for maximum weighted district
Territory, determines circumferential angle scope with its ET position for anchor point, i.e. can get territory, Laser Shock Processing 5-1, strong at laser-impact
Change 5-1 both sides, region and respectively increase by 5 °-8 ° as laser impact intensified border transition region 5-2.
Carrying out in 3rd step in laser impact intensified processing procedure, the intensity of laser-impact is along laser impact intensified border mistake
Cross the region 5-2 side near territory, Laser Shock Processing 5-1 to the dimension linear away from 5-1 side, territory, Laser Shock Processing
Successively decrease until being zero.This ensure that from territory, Laser Shock Processing 5-1, laser impact intensified border transition region 5-2 until
Without laser impact intensified region, laser impact intensified strength decrease so that pass groove 4 stress everywhere is consistent.
Example, when carrying out laser impact intensified to territory, Laser Shock Processing 5-1 in the 3rd step, laser energy is
2J-20J, pulse width is 5ns-50ns, and effect spot diameter is 1.0mm-5.0mm, and hot spot overlapping rate is 10%-90%.
Preferably, in the 3rd step, laser impact intensified process repeatedly can carry out repeatedly overlapping intensive treatment.
Reiforcing laser impact technology is that one utilizes short pulse punching (nanosecond order), big energy (joule level) laser beam to produce
Plasma stock wave, laser impact intensified can effectively introduce larger value of residual compressive stress on parts top layer, from material
The angle of mechanics is said, it can produce residual compressive stress at material surface and make material surface crystal grain refine, residual compressive stress energy
Enough it is effectively improved fatigue resistance and the wear resistance of material, therefore by laser impact intensified, it is possible to be effectively improved cold rolling
Pass anti-fatigue performance in the operation of rolling, thus pass service life is greatly improved.
See Fig. 3, by the above-mentioned laser impact intensified technique square test block quenching table to same holes mould Steel material
Face carries out laser-impact, 1# and 2# processes through laser-impact, and 3# processes without laser-impact, detects test block collimeter with XRD
The residual compressive stress of surface layer, and contrast with not impacting test block, after laser-impact, the residual pressure on pass test block impact top layer should
Power becomes the order of magnitude to improve, and at about 1mm depth, its residual compressive stress size still with quenching after residual compressive stress phase
When.
Rolling comparative trial of life-span is done, through in detail after the pass groove region of one secondary finished product rolling groove is carried out laser-impact
Statistics, laser reinforcing pass completes 1600 billet productions, does not strengthens pass with same batch and averagely rolls life span comparison, specifically
Comparing result is shown in Table 1:
Table 1 laser reinforcing pass with do not strengthen groove rolling life span comparison's table with batch
As shown in Table 1: through the pass of laser impact intensified process relative to the pass without laser impact intensified process,
Its service life can improve 1.6 times.
Concrete pass is carried out laser impact intensified by a kind of method improving the cold pilger mill pass life-span utilizing the present invention
Processing, specifying information is as follows:
Pass: 25-17.78/10.02/P/063；
Rolling pass: Φ 17.78 × 2.3 → Φ 10.02 × 0.7；
Shock zone: pass groove deformation section and Strain During Finishing Stage Zone Full；
Laser impact intensified parameter example combinations: take optimal value in above-mentioned laser-impact parameter area.
Result of implementation: surface, pass groove strengthening region is carried out hand grinding and puts into Rolling Production, roll 1600 the most altogether
Pipe, and pass is not the most damaged, and with the average life contrast under identical rolling condition of the batch pass, laser reinforcing hole
The type life-span improves at least 1.6 times.
Claims (5)
1. the method improving the cold pilger mill pass life-span, it is characterised in that comprise the following steps:
The first step, carries out examination to the cold rolling pass of finished product after fine grinding and rolls, it is ensured that cold rolling pass meets rolling quality requirement；
Second step, using the maximum weighted region of pass groove as territory, Laser Shock Processing, in territory, described Laser Shock Processing
Both sides respectively increase by a panel region as laser impact intensified border transition region；
3rd step, carries out laser to the territory, Laser Shock Processing determined in second step and laser impact intensified border transition region
Shock peening processes.
A kind of method improving the cold pilger mill pass life-span the most as claimed in claim 1, it is characterised in that in described second step
The determination method in laser impact intensified border transition region is: for maximum weighted region, determine circle with its ET position for anchor point
All angular ranges, then obtain territory, Laser Shock Processing, respectively increase by 5 ° of-8 ° of conducts in both sides, territory, described Laser Shock Processing
Described laser impact intensified border transition region.
A kind of method improving the cold pilger mill pass life-span the most as claimed in claim 2, it is characterised in that in described 3rd step
Carry out in laser impact intensified processing procedure, the intensity of laser-impact along described laser impact intensified border transition region near institute
Successively decrease to the dimension linear away from side, territory, described Laser Shock Processing until being zero in the side stating territory, Laser Shock Processing.
4. a kind of method improving the cold pilger mill pass life-span as described in any one of claim 1-3, it is characterised in that described
When carrying out laser impact intensified to territory, Laser Shock Processing in the 3rd step, laser energy is 2J-20J, and pulse width is 5ns-
50ns, effect spot diameter is 1.0mm-5.0mm, and hot spot overlapping rate is 10%-90%.
A kind of method improving the cold pilger mill casement life-span the most as claimed in claim 4, it is characterised in that in described 3rd step
Laser impact intensified is repeatedly overlapping strengthening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610784534.7A CN106244794B (en) | 2016-08-31 | 2016-08-31 | A kind of method for improving the cold pilger mill pass life-span |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610784534.7A CN106244794B (en) | 2016-08-31 | 2016-08-31 | A kind of method for improving the cold pilger mill pass life-span |
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| CN106244794A true CN106244794A (en) | 2016-12-21 |
| CN106244794B CN106244794B (en) | 2018-01-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339971A (en) * | 2018-12-10 | 2019-02-15 | 广西玉柴机器股份有限公司 | Laser hardens main beating cap and its manufacturing method |
| CN109423550A (en) * | 2017-09-04 | 2019-03-05 | 丰田自动车株式会社 | Component manufacturing method and component |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06106284A (en) * | 1992-09-24 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Roll for cold ring rolling |
| CN103602791A (en) * | 2013-12-02 | 2014-02-26 | 湖州市银鑫轧辊有限公司 | Grooved-roller laser surface treatment method |
| CN103710496A (en) * | 2014-01-13 | 2014-04-09 | 攀枝花钢城集团有限公司 | Profile roller repairing method |
| CN104862468A (en) * | 2015-06-11 | 2015-08-26 | 温州大学 | Method for prolonging service life of turbine blade based on laser double-faced impact technique |
| CN104962722A (en) * | 2015-05-25 | 2015-10-07 | 中国南方航空工业(集团)有限公司 | Turbine rotor blade tenon tooth laser shock processing method |
-
2016
- 2016-08-31 CN CN201610784534.7A patent/CN106244794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06106284A (en) * | 1992-09-24 | 1994-04-19 | Ishikawajima Harima Heavy Ind Co Ltd | Roll for cold ring rolling |
| CN103602791A (en) * | 2013-12-02 | 2014-02-26 | 湖州市银鑫轧辊有限公司 | Grooved-roller laser surface treatment method |
| CN103710496A (en) * | 2014-01-13 | 2014-04-09 | 攀枝花钢城集团有限公司 | Profile roller repairing method |
| CN104962722A (en) * | 2015-05-25 | 2015-10-07 | 中国南方航空工业(集团)有限公司 | Turbine rotor blade tenon tooth laser shock processing method |
| CN104862468A (en) * | 2015-06-11 | 2015-08-26 | 温州大学 | Method for prolonging service life of turbine blade based on laser double-faced impact technique |
Non-Patent Citations (1)
| Title |
|---|
| 姜银方等: ""制孔工艺对激光强化前后小孔疲劳寿命的影响"", 《电子科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109423550A (en) * | 2017-09-04 | 2019-03-05 | 丰田自动车株式会社 | Component manufacturing method and component |
| US11408050B2 (en) | 2017-09-04 | 2022-08-09 | Toyota Jidosha Kabushiki Kaisha | Component manufacturing method and component |
| CN109339971A (en) * | 2018-12-10 | 2019-02-15 | 广西玉柴机器股份有限公司 | Laser hardens main beating cap and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106244794B (en) | 2018-01-12 |
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Inventor after: Mao Jijun Inventor after: Shi Qian Inventor after: Shi Hongrui Inventor after: Li Xiaoshan Inventor after: Peng Sheng Inventor after: Wu Nan Inventor after: Gao Bo Inventor after: Li Xiaoying Inventor after: Li Guojie Inventor before: Mao Jijun Inventor before: Shi Qian Inventor before: Li Guojie |
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Effective date of registration: 20180315 Address after: 721000 Titanium City Road, Weibin District, Baoji, Shaanxi Province, No. 1 Co-patentee after: State Nuclear Bao Ti Zirconium Industry Company Patentee after: Northwest Zircocladding Co., Ltd. Address before: 721013 Baoji hi tech Avenue, Baoji, Shaanxi Patentee before: State Nuclear Bao Ti Zirconium Industry Company |