CN106555031A - The method of broadband laser strengthening treatment of surface of tension wheel - Google Patents
The method of broadband laser strengthening treatment of surface of tension wheel Download PDFInfo
- Publication number
- CN106555031A CN106555031A CN201510615887.XA CN201510615887A CN106555031A CN 106555031 A CN106555031 A CN 106555031A CN 201510615887 A CN201510615887 A CN 201510615887A CN 106555031 A CN106555031 A CN 106555031A
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- China
- Prior art keywords
- coated workpieces
- laser
- straining pulley
- quenching
- broad band
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pulleys (AREA)
Abstract
A kind of method of broadband laser strengthening treatment of surface of tension wheel, its feature：Rust cleaning decontamination is carried out to the surface to be quenched of straining pulley first, dehydrated alcohol wiped clean is used again, then optical absorbing agent is equably sprayed on the surface of straining pulley with spray gun, optical absorbing agent forms the light-absorbing coating of one layer of black on the surface to be quenched of straining pulley after being dried, obtains coated workpieces；Coated workpieces being clamped on the chuck of laser process machine main shaft, the beam orthogonal of shaven head being focused in finished surface, laser beam rectangular focus hot spot is orthogonal with the coat side of coated workpieces, the long side of rectangular focus hot spot and the diameter parallel of coated workpieces；Starting laser process machine drives coated workpieces at the uniform velocity to rotate, focus head does the parallel feed along straining pulley axis direction, starting broad band laser beam simultaneously carries out radiation quenching to the coat side of coated workpieces, it is allowed to form seamless, spiral yarn shaped RADIATION PROCESSING track, finally quenching face is polished with emery cloth.
Description
Technical field
The present invention relates to a kind of surface heat-treatment process, the method that more particularly to a kind of working surface for straining pulley carries out the broadband laser strengthening treatment of surface of tension wheel of intensive treatment.
Background technology
Straining pulley is that damping is provided in twisting wire rope equipment, is tensioned the vitals of steel wire or rope strand, is a diameter of 800 millimeters～1600 millimeters, and thickness is the 45# steel steel cast wheels of 500 millimeters～800 millimeters；Straining pulley will bear very big pulling force at work, it is desirable to which its working surface possesses very high anti-wear performance, carry out quenching hardening typically by the working surface to straining pulley and process to improve hardness to realize wearability.Due to the body of straining pulley it is huge, prior art carries out quenching hardening process to its surface using flame-hardened mode, i.e., straining pulley is clamped on rotation lathe and is rotated, the critical temperature that quenches is heated to the surface that torch is turned, fill-before-fire cooling water carries out the dynamic continuous quenching technique of quickly cooling；Flame hardening is due to being affected by flame temperature, heating-up time, the cooling water water yield, hydraulic pressure, water temperature, ambient temperature etc., cause the case hardness after quenching low, only HRC42 ~ HRC48, the hardness and thin hardened layer of whole surface is uneven, quality it is bad and be difficult to it is consistent, and process man-hour length, efficiency is low causes then high processing costs；Additionally, the cooling water of splashes makes processing environment soak badly；Therefore, there are the problems and shortcomings of low low hardness, poor quality, efficiency, high cost, bad environments in prior art.
The content of the invention
It is an object of the invention to solve the problems referred to above of prior art presence，By Improvement repeatedly，Give a kind of method of broadband laser strengthening treatment of surface of tension wheel，The present invention is using one layer of light-absorbing coating of surface-coated that cure process processing is needed in straining pulley，Straining pulley is clamped on the chuck of five axle four-axle linkage laser process machines and is at the uniform velocity rotated，Focus head on laser process machine is perpendicular to straining pulley，Under the drive of machine motor, focus head does and the broad band laser head of broad band laser machine is clamped on the middle carriage of lathe，Broad band laser head is driven by the saddle Jing middle carriages of lathe, and along making with the direction of lathe spindle diameter parallel, ratio is synchronous to be moved in parallel，The surface that straining pulley is coated with light-absorbing coating is radiated with the broad band laser beam after reflective focus lamp is focused on，The steel surface moment of straining pulley is made to reach quenching critical temperature，Quenching is realized using the conduction of heat quenching of air at room temperature and metal，And the technical scheme of any liquid cooling medium need not be sprayed，A kind of method of broadband laser strengthening treatment of surface of tension wheel is provided，It is intended to fast using broad band laser beam radiant temperature、Heat-affected zone is little、Anti- external interference is strong、Reliable and stable characteristic，The surface of straining pulley is made to realize intensive treatment，Reach hardness high、Quality is excellent、Efficiency high、Low cost、The purpose of clean environment.
The object of the present invention is achieved like this：A kind of method of broadband laser strengthening treatment of surface of tension wheel, including spraying light-absorbing coating, laser emission quenching, wherein.
Described spraying light-absorbing coating is first to carry out rust cleaning decontamination to the surface to be quenched of straining pulley, then use dehydrated alcohol wiped clean；Then optical absorbing agent is equably sprayed on the surface of straining pulley with spray gun, after being dried, optical absorbing agent forms the light-absorbing coating of one layer of black on the surface to be quenched of straining pulley, the light-absorbing coating thickness is 30～40 microns, obtains coated workpieces.
Described laser emission quenching is that the coated workpieces are clamped on the chuck of laser process machine main shaft, is adjusted to beam orthogonal in finished surface shaven head is focused on, and broad band laser machine used is CO2Laser machine, laser power：3200-3800W, spot size：（0.5-3）×（8-12）Mm, hot spot translational speed：120 ~ 250mm/s, lap width：0 ~ 2mm, adjustment broad band laser beam rectangular focus hot spot are orthogonal with the coat side of coated workpieces, the long side of rectangular focus hot spot and the diameter parallel of coated workpieces.
Starting laser process machine drives coated workpieces at the uniform velocity to rotate, the linear velocity of the coat side circumference rotation of coated workpieces is 1.2 ms/min～1.6 ms/min, focus head does the parallel feed along straining pulley axis direction, and feed speed is 9.8 millimeters/week, while starting CO2Broad band laser machine, broad band laser beam carry out radiation quenching to the coat side of coated workpieces, and the rectangular focus hot spot of broad band laser beam forms seamless, spiral yarn shaped RADIATION PROCESSING track in the coat side of coated workpieces；Afterwards, quenching face is polished with emery cloth.
The feed speed is that machine tool chief axis often rotate a circle and focus on the bare headed distance advanced.
The optical absorbing agent be by colour black, silicon dioxide, aluminium sesquioxide, titanium nitride, coating agent which has to be dissolved in alcohol before use and with dehydrated alcohol make solvent it is agitated made by mixing liquid, the proportioning of the mixing liquid is.
1000 milliliters of dehydrated alcohol, 3-5 gram of colour carbon black, 20-35 gram of the silicon dioxide of granularity 50-10 nanometer, 3-8 gram of the aluminium sesquioxide of granularity 50-10 nanometer, 5-10 gram of the titanium nitride of granularity 50-10 nanometer, 6-10 gram of coating agent which has to be dissolved in alcohol before use.
Compared with prior art, the invention has the beneficial effects as follows.
The rectangular focus light spot radiation of broad band laser beam is in the coat side of the coated workpieces, light-absorbing coating is conducive to absorption of the iron and steel carrier surface to laser energy, so that the steel surface moment of straining pulley reaches quenching critical temperature, due to the body of straining pulley it is huge, it is fast using broad band laser beam radiant temperature, heat-affected zone is little, and the quenching that the conduction of heat of air at room temperature and straining pulley itself iron and steel is formed is capable of achieving quenching, and any liquid cooling medium need not be sprayed and cooled, therefore the drawbacks of avoiding prior art flame hardening, in addition, the anti-outside air disturbance of bombardment with laser beams quenching is that the interference of wind is strong, it is not influenced by ambient temperature, it is reliable and stable.
The present invention is using one layer of light-absorbing coating of surface-coated that cure process processing is needed in straining pulley, straining pulley is clamped on the chuck of laser process machine and is at the uniform velocity rotated, along making with the direction of lathe spindle diameter parallel, ratio is synchronous to be moved in parallel focusing shaven head on laser process machine, uses CO2The rectangular light spot that the broad band laser beam that broad band laser machine sends is formed after focusing on shaven head focusing radiates the surface that straining pulley is coated with light-absorbing coating, the steel surface moment of straining pulley is made to reach quenching critical temperature, quenching is realized using the heat transfer quenching of air at room temperature and metal, and the technical scheme of any liquid cooling medium need not be sprayed, overcoming prior art, to there is hardness low, poor quality, efficiency is low, high cost, the problems and shortcomings of bad environments, a kind of method of the broadband laser strengthening treatment of surface of tension wheel for being provided, it is fast using broad band laser beam radiant temperature, heat-affected zone is little, anti- external interference, reliable and stable characteristic, make the surface Hardening Treatment of straining pulley, hardness is reached high, quality is excellent, efficiency high, low cost, the purpose of clean environment.
Specific embodiment
A kind of method of broadband laser strengthening treatment of surface of tension wheel of the present invention is described in further detail below by way of specific embodiment, those skilled in the art is referred to the method for embodiment and realizes carrying out quenching strengthening process to the working surface of straining pulley, but should not be construed as any limitation of the invention.
Embodiment 1.
The straining pulley product of Ningbo equipment company, using flame surface quenching, the hardness after having processed is distributed from HRC35-HRC48, using offline rear measurement in 6 months, basic each groove occurred in that the groove of pulling of radial direction, and bosom reaches 1.5mm, width 0.8-3mm, thus affect product quality offline.
Test sample：The straining pulley processed using the present invention, material 45# cast steels, quantity 3.
Case hardness is tested.
Test instrunment：Rockwell apparatus.
Method of testing：The measured surface of 150Kg load and diamond cone injector press-in test sample, reading case hardness data, measuring point, 5/part.
Case hardness：HRC58～HRC62.
Case hardness difference ＜ HRC2.
Section crystalline phase is determined：Thin hardened layer：0.8～1.2 millimeter.
The five axles four-axle linkage laser process machine includes：Light-conducting system, X, Y, Z three-dimensional linear axis, two rotary shafts of A, C totally five axles, general A axles are set as live spindle, drive a diameter of 800 ㎜ -- 1100 chuck, C axles are set as rotating auxiliary axle, drive the chuck of a diameter of 300 ㎜, wherein A axles be fixed on one 1 meter wide, in 3 meters to 5 meters or so of fixed platform.
The method of this broadband laser strengthening treatment of surface of tension wheel that the present invention is given, including spraying light-absorbing coating, laser emission quenching, wherein.
Described spraying light-absorbing coating is first to carry out rust cleaning decontamination to the surface to be quenched of straining pulley, then use dehydrated alcohol wiped clean；Then optical absorbing agent is equably sprayed on the surface of straining pulley with spray gun, optical absorbing agent forms the light-absorbing coating of one layer of black on the surface to be quenched of straining pulley after being dried, obtains coated workpieces.
Described laser emission quenching is that the coated workpieces are clamped on the chuck of laser process machine main shaft, is adjusted to beam orthogonal in finished surface shaven head is focused on, and broad band laser machine used is CO2Laser machine, adjustment broad band laser beam rectangular focus hot spot are orthogonal with the coat side of coated workpieces, the long side of rectangular focus hot spot and the diameter parallel of coated workpieces.
Starting laser process machine drives coated workpieces at the uniform velocity to rotate, and focus head does the parallel feed along straining pulley axis direction, while starting CO2Broad band laser machine, broad band laser beam carry out radiation quenching to the coat side of coated workpieces, and the rectangular focus hot spot of broad band laser beam forms seamless, spiral yarn shaped RADIATION PROCESSING track in the coat side of coated workpieces；Afterwards, quenching face is polished with emery cloth.
The feed speed is that machine tool chief axis often rotate a circle and focus on the bare headed distance advanced.
The optical absorbing agent be by colour black, silicon dioxide, aluminium sesquioxide, titanium nitride, coating agent which has to be dissolved in alcohol before use and with dehydrated alcohol make solvent it is agitated made by mixing liquid.
Specific process parameter is as follows.
The configuration proportion of light absorption paint：1000 milliliters of dehydrated alcohol, 5 grams of colour carbon black, 25 grams of the silicon dioxide of granularity 50-150 nanometer, 5 grams of the aluminium sesquioxide of granularity 50-150 nanometer, 8 grams of the titanium nitride of granularity 50-150 nanometer, 10 grams of coating agent which has to be dissolved in alcohol before use.
Coating thickness：35 microns.
Laser processing parameter：
Power： 3400w
Spot size：10×2mm
Linear velocity：1.4m/min
Feed speed：9.8mm/ it is all.
Using the complete straining pulley on-line operation of PROCESS FOR TREATMENT 6 months of the present invention, off-line test, substantially no obvious groove occur.13 months off-line tests, locally have groove to occur, and there are 0.5mm, width 0..5-0.6mm in bosom, estimate to rerun to have no problem 6 each moons by field engineer.
Half of the man-hours requirement of the present invention less than prior art, i.e. treatment effeciency are more than doubled.
The service life of the straining pulley processed with the present invention, improves 2～3 times than prior art.
Claims (2)
1. a kind of method of broadband laser strengthening treatment of surface of tension wheel, it is characterised in that including spraying light-absorbing coating, laser emission quenching, wherein：
Described spraying light-absorbing coating is first to carry out rust cleaning decontamination to the surface to be quenched of straining pulley, then use dehydrated alcohol wiped clean；Then optical absorbing agent is equably sprayed on the surface of straining pulley with spray gun, after being dried, optical absorbing agent forms the light-absorbing coating of one layer of black on the surface to be quenched of straining pulley, the light-absorbing coating thickness is 20～45 microns, obtains coated workpieces；
Described laser emission quenching is that the coated workpieces are clamped on the chuck of laser process machine main shaft, is adjusted to beam orthogonal in finished surface shaven head is focused on, and broad band laser machine used is CO2Laser machine, laser power：3200-3800W, spot size：（0.5-3）×（8-12）Mm, hot spot translational speed：120 ~ 250mm/s, lap width：0 ~ 2mm, adjustment broad band laser beam rectangular focus hot spot are orthogonal with the coat side of coated workpieces, the long side of rectangular focus hot spot and the diameter parallel of coated workpieces；
Starting laser process machine drives coated workpieces at the uniform velocity to rotate, the linear velocity of the coat side circumference rotation of coated workpieces is 1.2 ms/min～1.6 ms/min, focus head does the parallel feed along straining pulley axis direction, and feed speed is 9.8 millimeters/week, while starting CO2Broad band laser machine, broad band laser beam carry out radiation quenching to the coat side of coated workpieces, and the rectangular focus hot spot of broad band laser beam forms seamless, spiral yarn shaped RADIATION PROCESSING track in the coat side of coated workpieces；Afterwards, quenching face is polished with emery cloth.
2. the method for broadband laser strengthening treatment of surface of tension wheel according to claim 1, it is characterized in that the optical absorbing agent be by colour black, silicon dioxide, aluminium sesquioxide, titanium nitride, coating agent which has to be dissolved in alcohol before use and with dehydrated alcohol make solvent it is agitated made by mixing liquid, the proportioning of the mixing liquid is：
1000 milliliters of dehydrated alcohol, 3-5 gram of colour carbon black,
20-35 gram of the silicon dioxide of granularity 50-150 nanometer,
3-8 gram of the aluminium sesquioxide of granularity 50-150 nanometer,
5-10 gram of the titanium nitride of granularity 50-150 nanometer,
6-10 gram of coating agent which has to be dissolved in alcohol before use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510615887.XA CN106555031A (en) | 2015-09-24 | 2015-09-24 | The method of broadband laser strengthening treatment of surface of tension wheel |
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| CN201510615887.XA CN106555031A (en) | 2015-09-24 | 2015-09-24 | The method of broadband laser strengthening treatment of surface of tension wheel |
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| CN106555031A true CN106555031A (en) | 2017-04-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110255968A (en) * | 2019-07-30 | 2019-09-20 | 张�浩 | For the nano composite dope and preparation method thereof in laser surface modification technique |
| CN111702322A (en) * | 2019-03-18 | 2020-09-25 | 安世亚太科技股份有限公司 | Composite manufacturing system and method for additive manufacturing and laser preheating auxiliary material reducing cutting |
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| CN102424897A (en) * | 2011-11-19 | 2012-04-25 | 宁海县盛源激光科技有限公司 | Method for broadband laser strengthening treatment of surface of tension wheel |
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2015
- 2015-09-24 CN CN201510615887.XA patent/CN106555031A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702322A (en) * | 2019-03-18 | 2020-09-25 | 安世亚太科技股份有限公司 | Composite manufacturing system and method for additive manufacturing and laser preheating auxiliary material reducing cutting |
| CN110255968A (en) * | 2019-07-30 | 2019-09-20 | 张�浩 | For the nano composite dope and preparation method thereof in laser surface modification technique |
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Application publication date: 20170405 |