CN102453902A - Method for preparing tungsten carbide hard alloy coating on surface of high-speed wire roller collar - Google Patents
Method for preparing tungsten carbide hard alloy coating on surface of high-speed wire roller collar Download PDFInfo
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- CN102453902A CN102453902A CN2010105189469A CN201010518946A CN102453902A CN 102453902 A CN102453902 A CN 102453902A CN 2010105189469 A CN2010105189469 A CN 2010105189469A CN 201010518946 A CN201010518946 A CN 201010518946A CN 102453902 A CN102453902 A CN 102453902A
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- cladding
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- tungsten carbide
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- hard alloy
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Abstract
The invention discloses a method for preparing a tungsten carbide hard alloy coating on the surface of a high-speed wire roller collar. In the method, a metallurgy combined tungsten carbide hard alloy coating is formed at the hole pattern position of a common middle carbon alloy steel roller collar substrate in a cladding manner by a laser cladding technology and a synchronous powder feeding method. The method comprises the following process steps of: selecting a substrate of the roller collar; preparing a tungsten carbide hard alloy laser cladding material; and machining a working layer, performing surface cleaning, and performing laser cladding to form the tungsten carbide hard alloy coating on the surface of the roller collar. By the method, the total thermal fatigue resistance, impact resistance and corrosion resistance of the roller collar are improved, and the accidents of collar breaking due to insufficient impact rigidity of the conventional hard alloy are effectively reduced and even prevented.
Description
Technical field
The present invention relates to a kind of metallurgical equipment parts surface and prepare method wear-resisting, the heat resistanceheat resistant coating, particularly relate to a kind of method that adopts laser melting and coating technique in high-speed rod collars surface preparation carboloy coating, belong to the laser melting and coating technique field.
Background technology
High-speed rod-rolling mill adopts the tungsten-cobalt carbide hard carbide roll ring of powder metallurgy more, and collars has the hot hardness height, and wear resistance is good, but in use exists following obvious deficiency:
1. impelling strength still shows not enough, and under the effect of fatigue loading, fatigue crack growth is rapid, surperficial surfacial spalling even broken roller, and the abscission ring phenomenon happens occasionally.
2. erosion resistance is not good enough, and is strict to the water coolant pH value.
3. high to requirement on machining accuracy, collars is installed must be very careful.
Relevant novel material, the The Study on New Technology exploitation that substitutes traditional carbide roll ring never stopped, and the interior ring that carries out like the technology that adopts hot isostatic pressing is that steel, outer shroud are the composite ring of wimet, this complex process, and internal stress is big, serious cracking.Adopt castmethod to carry out the manufacturing of carbide roll ring, but the problem of casting aspect is also more.
Therefore; Select suitable technology in high-speed rod collars surface preparation carboloy coating; Making high-speed rod collars surface wolfram varbide hard alloy coating and substrate combinating strength height, wear resisting property thickness good, alloy coat even, is the current problem that needs to be resolved hurrily in affiliated field.
Laser melting and coating technique has obtained rapid popularization and widespread use in recent years as a kind of advanced person's re-manufacturing technology.
Laser melting and coating technique utilizes the high characteristics of high energy laser beam focused energy; Moment will be preset or send the powdered alloy of putting, have specific physical, chemistry or mechanical property to melt fully synchronously automatically with laser at substrate surface; Base material part fusing simultaneously forms a kind of new composite shape matl, rapid solidification after the laser beam flying; The fine and close coating of acquisition and matrix metallurgical binding is to reach the purpose of recovering geometrical dimension and surface strengthening.
At present, about utilizing laser melting and coating process to prepare the patent of equipment unit coated with wear-resisting alloy and reporting a lot: for example,
Publication number is " at the quick depositing process of preparing antinwear heat resistant composite coating of crystallizer surface laser " that the Chinese invention patent application of CN 1932082 provides; Its characteristics are to utilize superpower laser; Become the good toughness bottoming transition layer of metallurgical binding through the laser rapid scanning with matrix at the copper plate of crystallizer surface cladding, and prepare cobalt base alloy wear-resisting and the heat resistanceheat resistant excellent property at the bottoming alloy surface through laser wide-band cladding.
Publication number is " preparation method of laser fusion covered nickel base nanometer WC/Co precoated layer " that the Chinese invention patent application of CN1786272 provides; This preparation method comprises the following steps: 1. by the shellac of every grammes per square metre and the absolute ethyl alcohol weighing shellac and the absolute ethyl alcohol of 10～20 grammes per square metres, then with processing sticker in the described shellac adding absolute ethyl alcohol; 2. as required in the ratio of the sticker of every gram nickel base nanometer WC/Co powder and 0.1 milliliter～0.25 milliliter, weighing nickel base nanometer WC/Co powder and described sticker also mix, and stir and process precoating glue; 3. above-mentioned precoating glue is coated in the workpiece surface of treating Laser Cladding Treatment equably, processes precoated layer; 4. oven dry.Adopt homemade adhesive preparation nickel base nanometer WC/Co precoated layer, and then adopt laser melting and coating process, prepared that the surface is more smooth, finer and closely woven, basically eliminate crackle and hole and be the nickel base nanometer WC/Co compound coating of metallurgical binding with matrix.
Publication number is " laser melting and coating process of hydraulic support column cylinder, piston rod wear-resisting erosion resistance coating " that the Chinese invention patent application of CN101338427 provides; Comprise following technological process: at first column cylinder, piston rod surface pre-treatment: column cylinder barrel, piston rod surface carry out oil removing, rust cleaning under the room temperature, and clean with alcohol wash; The adjusting of the selection of powdered alloy and automatic powder feeding device then: select for use have good wear-resisting erosion resistance performance and with the good iron(-)base powder of the metallurgical consistency of matrix, mainly contain Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B in the composition of iron(-)base powder; The adjusting of last automatic powder feeding device: regulate the automatic powder feeding device, the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.6-1.2mm.
Publication number is " the railroad switch sliding bed surface abrasion resistance non-corrosive alloy coating laser melting and coating process " that the Chinese invention patent application of CN101338425 provides; Comprise following technological process: at first slide plate surface preparation; Promptly at room temperature degreasing and rust removal is carried out on the slide plate surface, and clean with alcohol wash; Be presetting of powdered alloy then; Promptly be preset in the slide plate surface after the above-mentioned processing to the iron-based of treating cladding, Ni-based or Co-based alloy powder; And adjust prealloyed powder with the floating rule that has guide rail; Make it to be evenly distributed on slide plate surface and have suitable thickness, to satisfy the requirement of coat-thickness after the cladding; Be that slide plate is strengthened in the light cladding at last, select gas CO for use
2Laser apparatus, worktable are numerically-controlled machine, carry out laser melting coating on the slide plate surface and strengthen.
Publication number is " the pick-like bit denticle head laser fusing and coating wear-resistant coating reinforcing process " that the Chinese invention patent application of CN101338428 provides, and comprises following technological process: at first be the pre-treatment of pick denticle head surface; Be the selection of powdered alloy and the adjustment of automatic powder feeding device then; Be pick head laser melting coating coated with wear-resisting alloy at last.
Though the technique scheme that prior art provides can be utilized laser melting and coating process that the equipment component parts are carried out wear-resistant coating and handle, and obtains certain technique effect.But to other specific equipment unit, the such special construction of image height speed wire rod collars for example, the processing parameter that existing laser melting and coating process is provided obviously can not adapt to.
Retrieve verification through the applicant: adopt laser melting and coating process in high-speed rod collars surface preparation carboloy coating, domestic beyond example is not still seen relevant report abroad yet.Therefore, seek out the processing parameter of suitable employing laser melting coating, still need the those skilled in the art further to make creationary research work in high-speed rod collars surface preparation carboloy coating.
Summary of the invention
The objective of the invention is to prior art handling difficult problem in high-speed rod collars surface preparation carboloy coating; Through research improvement repeatedly, provided a kind of new method in high-speed rod collars surface preparation carboloy coating.This method is to adopt laser melting and coating technique to pass through synchronous powder feeding system; Form the carboloy coating of metallurgical binding in common medium carbon alloy steel collars matrix pass place position cladding; The carboloy coating of collars workplace cladding and traditional whole cobalt-carboloy are different; Toughness phase intensity increases, and keeps the superior wear resistance of material.Owing to adopted the laser melting coating composite manufacturing technology; The compound high-speed rod collars of wimet surface energy improves whole heat-resistant anti-fatigue, shock resistance, the corrosion resistant performance of collars; Having effectively reduced even stopped the accident of the abscission ring that traditional wimet causes because of impelling strength inadequately, is the replacement technique of existing cemented carbide powder SINTERING PRODUCTION carbide roll ring.
The technical scheme that the present invention provides is: this method in high-speed rod collars surface preparation carboloy coating is characterized in that technological process is following:
1, the matrix of collars is selected
The body material of collars is a low-carbon alloy steel among 35CrMo, the 40CrNiMo;
2, the preparation of carboloy laser melting coating material
A, as the chemical ingredients of the nickel-base alloy of bonding phase, in mass percent:
Carbon 0.05-0.3%, silicon 2-4%, boron 1-3%, chromium 0-8%, iron 0-8%, all the other are nickel,
B, wolfram varbide characteristic
Spherical cast tungsten carbide, granularity 40-70um,
C, proportion of powder
Spherical cast tungsten carbide mass percent is 60-80%, and nickel-base alloy is that bonding phase mass percent is 20%--40%,
Prepare on electronic balance by above-mentioned materials and ratio range, and mix more than 4 hours at meal mixer;
3, working lining mechanical workout and surface-conditioning
Mechanical workout reserves the required working lining thickness of laser melting coating, and carries out surface-conditioning greasy dirt and rusty scale;
4, laser melting coating processing
1) adjustment of the selection of powdered alloy and automatic powder feeding device
According to the operating mode of roll, select the nickel-base alloy as bonding phase, spherical cast tungsten carbide powder for use, regulate automatic powder feeding device powder feeding rate, to satisfy the required powder feeding rate of coat-thickness.
2) laser cladding technological parameter
The cladding of high power laser light arrowband
Condensing lens f=100～400
Cladding power P=3000～10000W
Spot diameter D=2～6mm
Cladding scan velocity V=200～1000mm/min
Overlapping rate 40～60%
The cladding of high power laser light broadband
Cladding power P=3000～10000W
Rectangular light spot length * wide=(2～10) mm * (1～2) mm
Cladding scan velocity V=100～800mm/min
Overlapping rate 40～60%
The powdered alloy that the present invention prepares voluntarily is the Harmony of the difference of high higher wellability of bonding and spherical cast tungsten carbide tool and the hot rerum natura of material owing to nickel-base alloy, thereby the thermal fatigue resistance and the heat resistanceheat resistant abradability of excellent skill are arranged.
Compared with prior art, the invention has the beneficial effects as follows:
Adopt the method for laser melting and coating technique through synchronous powder feeding system; Form the carboloy coating of metallurgical binding in common medium carbon alloy steel collars matrix pass place position cladding; The carboloy coating toughness phase intensity of collars workplace cladding increases, and keeps the superior wear resistance of material.The present invention is owing to adopted the laser melting coating composite manufacturing technology; Improve whole heat-resistant anti-fatigue, shock resistance, the corrosion resistant performance of wimet composite ring, effectively reduced even stopped the accident of the abscission ring that traditional wimet causes because of impelling strength inadequately.
Embodiment
Embodiment 1
Laser melting coating carboloy coating is made high-speed rod collars process method and is contained following process:
1, the matrix of collars
The body material of collars is the 40CrNiMo steel alloy
2, the preparation of carboloy laser melting coating material
A, nickel-base alloy are the chemical ingredients of bonding phase, in mass percent:
Carbon 0.08%, silicon 2.5%, boron 1.5%, chromium 3%, iron 3%, all the other are nickel,
B, wolfram varbide characteristic
Spherical cast tungsten carbide
C, proportion of powder
Spherical cast tungsten carbide weight hundred numbers are 80%; Nickel-base alloy is that bonding phase weight hundred numbers are 20%.
Prepare on electronic balance by above-mentioned materials and ratio range, and mix more than 4 hours at special-purpose meal mixer.
3, working lining mechanical workout and surface-conditioning
The purpose of mechanical workout is in order to reserve the required working lining thickness of laser melting coating, and surface-conditioning is the important procedure that guarantees coating and substrate combinating strength, and greasy dirt etc. are removed with solvent or clean-out system, can use rusty scale and polish or blast cleaning.
4, laser melting coating processing
1) adjustment of the selection of powdered alloy and automatic powder feeding device
According to the working position of collars, select the bonding phase of aforementioned proportion, spherical cast tungsten carbide powder for use, regulate automatic powder feeding device powder feeding rate, to satisfy the required powder feeding rate of coat-thickness.
2) laser cladding technological parameter
Condensing lens f=400
Cladding power P=4000W
Spot diameter D=4mm
Cladding scan velocity V=500mm/min
Overlapping rate 50%
Embodiment 2
It is following that laser melting coating carboloy coating is made high-speed rod collars technology:
1. the matrix of collars
The body material of collars is the 35CrMo steel alloy
2. the preparation of carboloy laser melting coating material
A, nickel-base alloy are the chemical ingredients of bonding phase, in mass percent:
Carbon 0.15%, silicon 3.5%, boron 2.5%, chromium 5%, iron 5%, all the other are nickel;
B, wolfram varbide characteristic
Spherical cast tungsten carbide, granularity 40-70um.
C, proportion of powder
Spherical cast tungsten carbide weight hundred numbers are 60%; Nickel-base alloy is that bonding phase weight hundred numbers are 40%.
Prepare on electronic balance by above-mentioned materials and ratio range, and mix more than 4 hours at special-purpose meal mixer.
3, working lining mechanical workout and surface-conditioning
The purpose of mechanical workout is in order to reserve the required working lining thickness of laser melting coating, and surface-conditioning is the important procedure that guarantees coating and substrate combinating strength, and greasy dirt etc. are removed with solvent or clean-out system, can use rusty scale and polish or blast cleaning.
4, laser melting coating processing
1) adjustment of the selection of powdered alloy and automatic powder feeding device
According to the working position of collars, select the bonding phase of aforementioned proportion, spherical cast tungsten carbide powder for use, regulate automatic powder feeding device powder feeding rate, to satisfy the required powder feeding rate of coat-thickness.
2) laser cladding technological parameter
Cladding power P=7000W
Rectangular light spot length * wide=10mm * 1mm
Cladding scan velocity V=400mm/min
Overlapping rate 40%.
Claims (3)
1. method in high-speed rod collars surface preparation carboloy coating is characterized in that technological process is following:
(1) matrix of collars is selected
The body material of collars is a low-carbon alloy steel among 35CrMo, the 40CrNiMo;
(2) preparation of carboloy laser melting coating material
A, as the chemical ingredients of the Co-based alloy powder of bonding phase, in mass percent:
Carbon 0.05-0.3%, silicon 2-4%, boron 1-3%, chromium 0-8%, iron 0-8%, all the other are nickel,
B, tungsten-carbide powder
Spherical cast tungsten carbide powder, granularity 40-70um,
C, proportion of powder
The add-on of spherical cast tungsten carbide powder is counted 60-80% with mass percent, and the add-on of Co-based alloy powder is counted 20%--40% with mass percent, prepares by above-mentioned materials and ratio range, and mixes more than 4 hours at meal mixer;
(3) working lining mechanical workout and surface-conditioning
Mechanical workout reserves the required working lining thickness of laser melting coating, and carries out surface-conditioning greasy dirt and rusty scale;
(4) laser melting coating processing
1) adjustment of the selection of powdered alloy and automatic powder feeding device
According to the operating mode of roll, select the Co-based alloy powder as bonding phase, spherical cast tungsten carbide powder for use, regulate automatic powder feeding device powder feeding rate, to satisfy the required powder feeding rate of coat-thickness;
2) laser cladding technological parameter
The cladding of high power laser light arrowband
Condensing lens f=100～400, cladding power P=3000～10000W,
Spot diameter D=2～6mm, cladding scan velocity V=200～1000mm/min,
Overlapping rate 40～60%,
The cladding of high power laser light broadband
Cladding power P=3000～10000W, cladding scan velocity V=100～800mm/min,
Rectangular light spot length * wide=(2～10) mm * (1～2) mm, overlapping rate 40～60%.
2. the method in high-speed rod collars surface preparation carboloy coating according to claim 1 is characterized in that the chemical ingredients of Co-based alloy powder preferably, in mass percent:
All the other are nickel for carbon 0.08% silicon 2.5% boron 1.5% chromium 3% iron 3%.
3. the method in high-speed rod collars surface preparation carboloy coating according to claim 1 is characterized in that the chemical ingredients of Co-based alloy powder preferably, in mass percent:
Carbon 0.15%, silicon 3.5%, boron 2.5%, chromium 5%, iron 5%, all the other are nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010518946.9A CN102453902B (en) | 2010-10-26 | 2010-10-26 | Method for preparing tungsten carbide hard alloy coating on surface of high-speed wire roller collar |
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| CN201010518946.9A CN102453902B (en) | 2010-10-26 | 2010-10-26 | Method for preparing tungsten carbide hard alloy coating on surface of high-speed wire roller collar |
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| CN102453902A true CN102453902A (en) | 2012-05-16 |
| CN102453902B CN102453902B (en) | 2015-02-18 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839372A (en) * | 2012-09-24 | 2012-12-26 | 上海高斯雷洁激光技术有限公司 | Manufacturing method of wear-resistant and sparkproof cutting pick |
| CN103205749A (en) * | 2013-04-27 | 2013-07-17 | 上海海事大学 | Nickel-based spherical tungsten carbide wear-resistant anti-corrosion coating and preparation method thereof |
| CN103290410A (en) * | 2013-07-03 | 2013-09-11 | 辽宁思达思克实业有限公司 | Laser cladding manufacturing method of seamless steel tube piercing plug |
| CN103290409A (en) * | 2013-07-03 | 2013-09-11 | 辽宁思达思克实业有限公司 | Manufacturing method of mixer blade |
| CN104195550A (en) * | 2014-09-12 | 2014-12-10 | 天津工业大学 | Preparation method of WC-NiSiB laser cladding material |
| CN104837583A (en) * | 2012-12-07 | 2015-08-12 | 山特维克知识产权股份有限公司 | Method for manufacture of a hip consolidated component and a hip:ed component comprising a wear resistant layer |
| CN105441936A (en) * | 2015-11-11 | 2016-03-30 | 刘昭晖 | Process technology for coating of high-speed steel taper shank twist drill |
| CN108359983A (en) * | 2018-05-22 | 2018-08-03 | 苏州热工研究院有限公司 | A kind of centrifugal pump impeller choma surface abrasion resistance sealing coating and preparation method thereof |
| CN109943845A (en) * | 2019-05-06 | 2019-06-28 | 贵州大学 | A kind of nodularization MMC composite coating material and its laser cladding method |
| CN111440979A (en) * | 2020-05-18 | 2020-07-24 | 唐山中茂科技有限公司 | High-wear-resistance cladding metal ceramic powder for surface strengthening and use method thereof |
| CN113529068A (en) * | 2021-06-28 | 2021-10-22 | 济南大学 | Preparation method of brake disc surface laser cladding ceramic composite coating |
| CN113652685A (en) * | 2021-07-30 | 2021-11-16 | 山东莱钢永锋钢铁有限公司 | Roller surface strengthening process |
| CN114672803A (en) * | 2022-04-14 | 2022-06-28 | 中国石油化工股份有限公司 | Petroleum plunger process method based on laser cladding nickel-based tungsten carbide coating |
| CN114959686A (en) * | 2022-05-27 | 2022-08-30 | 宜宾上交大新材料研究中心 | Laser cladding powder and method for laser cladding on aluminum alloy surface |
| CN115161514A (en) * | 2022-04-29 | 2022-10-11 | 四川轻化工大学 | High-temperature wear-resistant composite metallurgy strengthening alloy cladding layer for strengthening roll surface or roll pass and laser cladding process |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839372A (en) * | 2012-09-24 | 2012-12-26 | 上海高斯雷洁激光技术有限公司 | Manufacturing method of wear-resistant and sparkproof cutting pick |
| CN104837583A (en) * | 2012-12-07 | 2015-08-12 | 山特维克知识产权股份有限公司 | Method for manufacture of a hip consolidated component and a hip:ed component comprising a wear resistant layer |
| US9592553B2 (en) | 2012-12-07 | 2017-03-14 | Sandvik Intellectual Property Ab | Method for manufacture of a HIP consolidated component and a HIP:ed component comprising a wear resistant layer |
| CN103205749B (en) * | 2013-04-27 | 2016-05-18 | 上海海事大学 | A kind of Ni-based spherical tungsten carbide wear-and corrosion-resistant coating and preparation method thereof |
| CN103205749A (en) * | 2013-04-27 | 2013-07-17 | 上海海事大学 | Nickel-based spherical tungsten carbide wear-resistant anti-corrosion coating and preparation method thereof |
| CN103290410A (en) * | 2013-07-03 | 2013-09-11 | 辽宁思达思克实业有限公司 | Laser cladding manufacturing method of seamless steel tube piercing plug |
| CN103290409A (en) * | 2013-07-03 | 2013-09-11 | 辽宁思达思克实业有限公司 | Manufacturing method of mixer blade |
| CN103290410B (en) * | 2013-07-03 | 2015-08-19 | 辽宁思达思克实业有限公司 | A kind of laser melting coating manufacture method of piercing plug for seamless steel tubes |
| CN104195550A (en) * | 2014-09-12 | 2014-12-10 | 天津工业大学 | Preparation method of WC-NiSiB laser cladding material |
| CN105441936A (en) * | 2015-11-11 | 2016-03-30 | 刘昭晖 | Process technology for coating of high-speed steel taper shank twist drill |
| CN108359983A (en) * | 2018-05-22 | 2018-08-03 | 苏州热工研究院有限公司 | A kind of centrifugal pump impeller choma surface abrasion resistance sealing coating and preparation method thereof |
| CN109943845A (en) * | 2019-05-06 | 2019-06-28 | 贵州大学 | A kind of nodularization MMC composite coating material and its laser cladding method |
| CN111440979A (en) * | 2020-05-18 | 2020-07-24 | 唐山中茂科技有限公司 | High-wear-resistance cladding metal ceramic powder for surface strengthening and use method thereof |
| CN113529068A (en) * | 2021-06-28 | 2021-10-22 | 济南大学 | Preparation method of brake disc surface laser cladding ceramic composite coating |
| CN113529068B (en) * | 2021-06-28 | 2022-06-17 | 济南大学 | Preparation method of brake disc surface laser cladding ceramic composite coating |
| CN113652685A (en) * | 2021-07-30 | 2021-11-16 | 山东莱钢永锋钢铁有限公司 | Roller surface strengthening process |
| CN114672803A (en) * | 2022-04-14 | 2022-06-28 | 中国石油化工股份有限公司 | Petroleum plunger process method based on laser cladding nickel-based tungsten carbide coating |
| CN115161514A (en) * | 2022-04-29 | 2022-10-11 | 四川轻化工大学 | High-temperature wear-resistant composite metallurgy strengthening alloy cladding layer for strengthening roll surface or roll pass and laser cladding process |
| CN114959686A (en) * | 2022-05-27 | 2022-08-30 | 宜宾上交大新材料研究中心 | Laser cladding powder and method for laser cladding on aluminum alloy surface |
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