CN102424897A - Method for broadband laser strengthening treatment of surface of tension wheel - Google Patents
Method for broadband laser strengthening treatment of surface of tension wheel Download PDFInfo
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- CN102424897A CN102424897A CN2011103839486A CN201110383948A CN102424897A CN 102424897 A CN102424897 A CN 102424897A CN 2011103839486 A CN2011103839486 A CN 2011103839486A CN 201110383948 A CN201110383948 A CN 201110383948A CN 102424897 A CN102424897 A CN 102424897A
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- broad band
- band laser
- lathe
- quenching
- tension wheel
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Abstract
The invention discloses a method for broadband laser strengthening treatment of a surface of a tension wheel, which comprises spraying of a light absorbing coating and laser radiation quenching. The surface of the tension wheel to be hardened is coated with the light absorbing coating, the tension wheel is clamped on a lathe and rotates at a constant speed, a broadband laser head of a broadband laser machine is clamped on a middle dragging plate of the lathe, a large dragging plate of the lathe drives the broadband laser head to move proportionally and synchronously in a direction parallel to the axial line of the spindle of the lathe, the surface of the tension wheel coated with the light absorbing coating is radiated through a broadband laser beam so that the steel surface of the tension wheel instantly reaches the critical quenching temperature, and quenching is realized through heat exchange between air at the room temperature and metal for quenching, and no liquid cooling medium needs to be sprayed in the technical scheme. The problems and defects of low hardness, low quality, low efficiency, high cost and harsh environment of the prior art can be solved and overcome, the surface of the tension wheel can be strengthened, and the purposes of high hardness, high quality, high efficiency, low cost and clean environment can be achieved.
Description
Technical field
The present invention relates to a kind of surface heat-treatment process, specifically be meant the method that is used for the working-surface of straining pulley is carried out a kind of broad band laser intensified process straining pulley surface of intensified process.
Background technology
Straining pulley is in the twisting wire rope equipment damping to be provided, and the vitals of tensioning steel wire or rope strand is that diameter is 800 millimeters～1600 millimeters, and thickness is the 45# steel steel cast wheel of 500 millimeters～800 millimeter; Straining pulley will bear very big pulling force at work, requires its working-surface to possess very high wear resisting property, normally carries out the quench hardening processing through the working-surface to straining pulley and realizes wear resistance to improve hardness.Because the body of straining pulley is huge; Prior art adopts flame-hardened mode that quench hardening is carried out on its surface and handles; Promptly; Straining pulley is clamped in rotation rotates on the lathe, with torch the surface of its rotation is heated to the quenching critical temperature, shower cooling water carries out the cold dynamic continuous quenching technology of speed again; Flame quenching is owing to influenced by flame temperature, TRT, the water coolant water yield, hydraulic pressure, water temperature, envrionment temperature etc.; Cause the surface hardness after the quenching on the low side; Be merely HRC42～HRC48; The hardness and the thin hardened layer on whole surface are inhomogeneous, and quality is bad and be difficult to unanimity, and handle long, the low tooling cost height that causes then of efficient in man-hour; In addition, the water coolant that splashes everywhere soaks badly processing environment; Therefore, prior art have that hardness is low, poor quality, efficient is low, cost is high, environment is abominable problems and shortcomings.
Summary of the invention
Problems and shortcomings to above-mentioned prior art existence; The present invention is employed in surface-coated one deck light-absorbing coating that straining pulley needs setting treatment processing; Straining pulley is clamped in does at the uniform velocity rotation on the chuck of lathe; The broad band laser focused light head-clamp of broad band laser machine is held on the middle carriage of lathe; Drive broad band laser head edge by the saddle of lathe through middle carriage and do synchronous parallel the moving of ratio with the direction of lathe spindle parallel axes, the broad band laser bundle radiation straining pulley that sends with the broad band laser machine is coated with the surface of light-absorbing coating, makes steel surface moment of straining pulley reach the quenching critical temperature; Utilize the thermal conduction quenching of air at room temperature and metal to realize quenching; And the technical scheme that need not to spray any liquid cooling medium provides a kind of broad band laser intensified process straining pulley surperficial method, is intended to utilize the characteristic that broad band laser bundle radiant temperature is fast, the heat-affected zone is little, anti-external interference is strong, reliable and stable; Make the surface Hardening Treatment of straining pulley, reach the hardness height, article are of fine quality, efficient is high, cost is low, the purpose of clean environment.
The objective of the invention is to realize like this: the method on a kind of broad band laser intensified process straining pulley surface; Comprise spraying light-absorbing coating, laser radiation quenching; Wherein: described spraying light-absorbing coating does; Earlier, use the absolute ethyl alcohol wiped clean again to the decontamination that eliminates rust of the surface to be quenched of straining pulley; Optical absorbing agent is sprayed on equably on the surface of straining pulley with spray gun then, dry back optical absorbing agent forms the light-absorbing coating of one deck black on the surface to be quenched of straining pulley, and said light-absorbing coating thickness is 30～40 microns, obtains coated workpieces;
Described laser radiation is quenched, and said coated workpieces is clamped on the chuck of lathe spindle, and the broad band laser focused light head-clamp of broad band laser machine is held on the middle carriage of lathe, and the broad band laser machine is CO
2Laser machine, power 3.2～3.6kW, rectangular focus hot spot are 10 millimeters * 2 millimeters, the coat side quadrature of adjustment broad band laser bundle rectangular focus hot spot and coated workpieces, the long limit of rectangular focus hot spot and the parallel axes of coated workpieces;
Start lathe and drive the at the uniform velocity rotation of coated workpieces do; The LV of the coat side circumference rotation of coated workpieces is 1.2 meters/minute～1.6 meters/minute; Hang up the parallel feed of saddle, speed of feed is 9.8 millimeters/week, starts the broad band laser machine simultaneously; The broad band laser bundle carries out radiation to the coat side of coated workpieces and quenches, and the rectangular focus hot spot of broad band laser bundle forms seamless, spiral yarn shaped radiation processing track on the coat side of coated workpieces; Afterwards, with emery cloth quenching face is polished and get final product;
Said speed of feed does, the lathe spindle distance that saddle is advanced that whenever rotates a circle; Said optical absorbing agent is by titanium nitride (powder), silicon-dioxide (powder), aluminium sesquioxide (powder), coating agent which has to be dissolved in alcohol before use, to make the mixing liquid that solvent makes through stirring with absolute ethyl alcohol.
Principle of work and beneficial effect
The rectangular focus light spot radiation of broad band laser bundle is on the coat side of said coated workpieces, and light-absorbing coating helps the absorption of iron and steel carrier surface to laser energy, makes steel surface moment of straining pulley reach the quenching critical temperature; Because the body of straining pulley is huge, utilize that broad band laser bundle radiant temperature is fast, the heat-affected zone is little, and the quenching of the heat passage formation of air at room temperature and straining pulley self iron and steel can realize quenching; Cool and need not to spray any liquid cooling medium; Therefore avoided the flame-hardened drawback of prior art, in addition, the bombardment with laser beams interference that anti-outside air disturbance is wind of quenching is strong; Not influenced by ambient temperature, reliable and stable.
Above-mentioned; The present invention is employed in surface-coated one deck light-absorbing coating that straining pulley needs setting treatment processing; Straining pulley is clamped in does at the uniform velocity rotation on the chuck of lathe; The broad band laser head-clamp of broad band laser machine is held on the middle carriage of lathe, drives broad band laser head edge by the saddle of lathe through middle carriage and do synchronous parallel the moving of ratio with the direction of lathe spindle parallel axes, the broad band laser bundle radiation straining pulley that sends with the broad band laser machine is coated with the surface of light-absorbing coating; Make steel surface moment of straining pulley reach the quenching critical temperature; Utilize the thermal conduction quenching of air at room temperature and metal realize to quench, and the technical scheme that need not to spray any liquid cooling medium, overcome that prior art exists that hardness is low, poor quality, efficient is low, cost is high, environment is abominable problems and shortcomings; The method on a kind of broad band laser intensified process straining pulley surface that is provided; Utilize the characteristic that broad band laser bundle radiant temperature is fast, the heat-affected zone is little, anti-external interference is strong, reliable and stable, make the surface Hardening Treatment of straining pulley, reached that hardness is high, article are of fine quality, efficient is high, cost is low, the purpose of clean environment.
The embodiment explanation
Below through specific embodiment the method on a kind of broad band laser intensified process straining pulley of the present invention surface is done further explain; The those skilled in the art can realize with reference to the method for embodiment the working-surface of straining pulley is carried out the quenching strengthening processing, but should not be construed as any restriction of the present invention.
Embodiment
The method on a kind of broad band laser intensified process straining pulley of the present invention surface; Comprise spraying light-absorbing coating, laser radiation quenching; Wherein: described spraying light-absorbing coating does, to the decontamination that eliminates rust of the surface to be quenched of straining pulley, uses the absolute ethyl alcohol wiped clean more earlier; Optical absorbing agent is sprayed on equably on the surface of straining pulley with spray gun then, dry back optical absorbing agent forms the light-absorbing coating of one deck black on the surface to be quenched of straining pulley, and said light-absorbing coating thickness is 30～40 microns, obtains coated workpieces;
Described laser radiation is quenched, and said coated workpieces is clamped on the chuck of lathe spindle, and the broad band laser focused light head-clamp of broad band laser machine is held on the middle carriage of lathe, and the broad band laser machine is CO
2Laser machine, power 3.2～3.6kW, rectangular focus hot spot are 10 millimeters * 2 millimeters, the coat side quadrature of adjustment broad band laser bundle rectangular focus hot spot and coated workpieces, the long limit of rectangular focus hot spot and the parallel axes of coated workpieces;
Start lathe and drive the at the uniform velocity rotation of coated workpieces do; The LV of the coat side circumference rotation of coated workpieces is 1.2 meters/minute～1.6 meters/minute; Hang up the parallel feed of saddle, speed of feed is 9.8 millimeters/week, starts the broad band laser machine simultaneously; The broad band laser bundle carries out radiation to the coat side of coated workpieces and quenches, and the rectangular focus hot spot of broad band laser bundle forms seamless, spiral yarn shaped radiation processing track on the coat side of coated workpieces; Afterwards, with emery cloth quenching face is polished and get final product;
Said speed of feed does, the lathe spindle distance that saddle is advanced that whenever rotates a circle; Said optical absorbing agent is by titanium nitride (powder), silicon-dioxide (powder), aluminium sesquioxide (powder), coating agent which has to be dissolved in alcohol before use, to make the mixing liquid that solvent makes through stirring with absolute ethyl alcohol.
Principle of work and beneficial effect
The rectangular focus light spot radiation of broad band laser bundle is on the coat side of said coated workpieces, and light-absorbing coating helps the absorption of iron and steel carrier surface to laser energy, makes steel surface moment of straining pulley reach the quenching critical temperature; Because the body of straining pulley is huge, utilize that broad band laser bundle radiant temperature is fast, the heat-affected zone is little, and the quenching of the heat passage formation of air at room temperature and straining pulley self iron and steel can realize quenching; Cool and need not to spray any liquid cooling medium; Therefore avoided the flame-hardened drawback of prior art, in addition, the bombardment with laser beams interference that anti-outside air disturbance is wind of quenching is strong; Not influenced by ambient temperature, reliable and stable.
Testing data
Specimen: the straining pulley that adopts the present invention to handle, material 45# cast steel, 3 of quantity;
The surface hardness test
Testing tool: Rockwell hardometer;
Testing method: 150Kg load and diamond awl injector are pressed into the measured surface of specimen, read the surface hardness data, measuring point, 5/part;
Surface hardness: HRC58～HRC62;
Surface hardness is poor＜HRC2;
The section crystalline phase is measured: thin hardened layer: 0.8～1.2 millimeter.
Be the half the of prior art man-hour required for the present invention, and promptly processing efficiency is doubled;
In the work-ing life of the straining pulley of handling with the present invention, 2～3 times have been improved than prior art.
Claims (1)
1. the method on broad band laser intensified process straining pulley surface; It is characterized in that: comprise spraying light-absorbing coating, laser radiation quenching; Described spraying light-absorbing coating does, to the decontamination that eliminates rust of the surface to be quenched of straining pulley, uses the absolute ethyl alcohol wiped clean more earlier; Optical absorbing agent is sprayed on equably on the surface of straining pulley with spray gun then, dry back optical absorbing agent forms the light-absorbing coating of one deck black on the surface to be quenched of straining pulley, and said light-absorbing coating thickness is 30～40 microns, obtains coated workpieces;
Described laser radiation is quenched, and said coated workpieces is clamped on the chuck of lathe spindle, and the broad band laser focused light head-clamp of broad band laser machine is held on the middle carriage of lathe, and the broad band laser machine is CO
2Laser machine, power 3.2～3.6kW, rectangular focus hot spot are 10 millimeters * 2 millimeters, the coat side quadrature of adjustment broad band laser bundle rectangular focus hot spot and coated workpieces, the long limit of rectangular focus hot spot and the parallel axes of coated workpieces; Start lathe and drive the at the uniform velocity rotation of coated workpieces do; The LV of the coat side circumference rotation of coated workpieces is 1.2 meters/minute～1.6 meters/minute; Hang up the parallel feed of saddle, speed of feed is 9.8 millimeters/week, starts the broad band laser machine simultaneously; The broad band laser bundle carries out radiation to the coat side of coated workpieces and quenches, and the rectangular focus hot spot of broad band laser bundle forms seamless, spiral yarn shaped radiation processing track on the coat side of coated workpieces; Afterwards, with emery cloth quenching face is polished and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103839486A CN102424897A (en) | 2011-11-19 | 2011-11-19 | Method for broadband laser strengthening treatment of surface of tension wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103839486A CN102424897A (en) | 2011-11-19 | 2011-11-19 | Method for broadband laser strengthening treatment of surface of tension wheel |
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| CN102424897A true CN102424897A (en) | 2012-04-25 |
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| CN2011103839486A Pending CN102424897A (en) | 2011-11-19 | 2011-11-19 | Method for broadband laser strengthening treatment of surface of tension wheel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649990A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Process for laser transformation hardening of shaft workpieces |
| CN106555031A (en) * | 2015-09-24 | 2017-04-05 | 沈阳大陆激光技术有限公司 | The method of broadband laser strengthening treatment of surface of tension wheel |
| CN109266811A (en) * | 2018-12-06 | 2019-01-25 | 淮南舜立机械有限责任公司 | Column oil cylinder Laser Surface Treatment device |
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2011
- 2011-11-19 CN CN2011103839486A patent/CN102424897A/en active Pending
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| JPH06264134A (en) * | 1993-03-11 | 1994-09-20 | Amadasonoike Co Ltd | Laser hardening method and coating material to be used in the same method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649990A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Process for laser transformation hardening of shaft workpieces |
| CN106555031A (en) * | 2015-09-24 | 2017-04-05 | 沈阳大陆激光技术有限公司 | The method of broadband laser strengthening treatment of surface of tension wheel |
| CN109266811A (en) * | 2018-12-06 | 2019-01-25 | 淮南舜立机械有限责任公司 | Column oil cylinder Laser Surface Treatment device |
| CN109266811B (en) * | 2018-12-06 | 2023-11-14 | 淮南舜立机械有限责任公司 | Laser surface treatment device for upright post oil cylinder |
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Application publication date: 20120425 |