CN104250806A - Method for preparing wear resistant coating on bar material KOCKS sizing mill clamping chuck surface through laser cladding - Google Patents
Method for preparing wear resistant coating on bar material KOCKS sizing mill clamping chuck surface through laser cladding Download PDFInfo
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- CN104250806A CN104250806A CN201310264563.7A CN201310264563A CN104250806A CN 104250806 A CN104250806 A CN 104250806A CN 201310264563 A CN201310264563 A CN 201310264563A CN 104250806 A CN104250806 A CN 104250806A
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Abstract
The invention relates to a method for preparing a wear resistant coating on a bar material KOCKS sizing mill clamping chuck surface through laser cladding, which comprises the following steps: 1)preparing a transition layer laser cladding material, preparing A)nickel-based alloy powder and B)cobalt-based alloy powder on an electronic balance with weight proportion of 3-5: 1, mixing for more than 4 hours by a special-purpose meal mixer; 2)machining and cleaning surface of a work layer, removing oil stain by a solvent or a cleaning compound, removing a rust layer by polishing or sand blasting; and 3)performing laser cladding, selecting the prepared and mixed transition layer powder and work layer powder, adjusting the powder feeding rate of an automatic powder feeding apparatus, and then satisfying the powder feeding rate required by the coating thickness. The cobalt-based hard alloy coating which has thickness of 0.5--3mm and has characteristics of high hardness, thermal wear resistance, and strong intermetallic scratch capability resistance is formed on the surface of a matrix, so that bar material KOCKS sizing mill clamping chuck front edge and chuck surface usage life can be increased.
Description
Technical field
The present invention relates to a kind of method adopting laser melting and coating technique to repair metallurgical equipment parts, particularly relate to a kind of method that bar KOCKS sizing mill chuck surface laser melting coating prepares wear-resistant coating, belong to laser melting and coating technique field.
Background technology
Bar KOCKS tri-roller reducing sizing mill is mutually 120 ° due to three rollers, makes distortion more even, can obtain more accurate tolerance of dimension and good surface quality; Adopt frame roll change for subsequent use, can effective operation time be improved, improve lumber recovery.Because rolling accuracy is high, surface quality is good, can reduce subsequent handling cost, is thus usually used in the high special steel of added value and produces.
KOCKS tri-roller reducing sizing mill chuck assembly is its core component.In production assembling process, cause chuck to stop platform with handling and wearing and tearing appears in card because the Wimet of chuck and high rigidity, high speed steel roll collar contact, the excessive impact in fit-up gap normally works, particularly wear and tear overproof after cause occurring in the operation of rolling between collars and card that Relative sliding exacerbates the wearing and tearing of chuck and impact is normal produces not due to tightness.
Adopt traditional reparation with when manufacturing in chuck abrading section, the distortion caused greatly due to arc surfacing thermal stresses is large, and spraying and plating, in conjunction with bonding force difference, therefore cannot adopt above-mentioned processing method effectively to implement.
Summary of the invention
Object of the present invention is just for prior art Problems existing, provides a kind of bar KOCKS sizing mill chuck surface laser melting coating reparation and manufacturing process.Operational path of the present invention is: utilize laser melting coating short for action time, the heat affected zone of body material and the distortion produced due to machining stress little, cladding layer structure is fine and closely woven, microdefect is little, coating and basal body interface are metallurgical binding, cladding layer composition and thinning ratio controlled, the advantages such as easy automatization constituency cladding, adopt high rigidity, the strong Co-based alloy powder of ability is abraded as laser melting coating working lining between anti-metal, and between working lining and matrix, adopt obdurability good, the moderate alloy of linear expansivity is as its transition layer, effectively avoid the excessive cladding problem of Cracking caused of the heat physical properties difference between matrix and working layer.This invented technology is simple, workable, has significant economic benefit and social benefit.
The technical solution used in the present invention is.
This bar KOCKS sizing mill chuck surface laser melting coating prepares the method for wear-resistant coating, is characterized in comprising the following steps.
1. the preparation of transition layer laser cladding of material.
A. Co-based alloy powder, its chemical composition is.
Carbon 0.05-0.3% silicon 2-4% boron 1-3% chromium 0-8% iron 0-8% all the other be nickel.
B, Co-based alloy powder, its chemical composition is.
Carbon 0.25% silicon 0.9% chromium 27.0% molybdenum 5.5% iron 0-8% all the other be cobalt.
C, preparation powder proportions.
Above-mentioned A, B two kinds of weight alloy ratio are 3 ~ 5:1.
Prepare on electronic balance by above-mentioned materials and ratio range, and carry out mixing more than 4 hours at special meal mixer.
2. working lining mechanical workout and removing surface.
The object of mechanical workout is in order to the working lining thickness needed for reserved laser melting coating, and removing surface is the important procedure ensureing coating and substrate combinating strength, and solvent or the clean-out system such as greasy dirt are removed, can with polishing or blast cleaning to rusty scale.
3, laser melting coating processing.
1) selection of powdered alloy and the adjustment of automatic powder feeding device.
According to the abrasive conditions of chuck, select and prepare and mix complete excessive layer powder, working lining powder, working lining powder is known technology (trade mark is Stelite 1), regulates automatic powder feeding device powder feeding rate, to meet powder feeding rate needed for coat-thickness.
2) laser cladding technological parameter.
Condensing lens f=200 ~ 400.
Cladding power P=2000 ~ 10000W.
Spot diameter D=2 ~ 6mm.
Cladding scan velocity V=200 ~ 1000mm/min.
Overlapping rate 40 ~ 60%.
Cladding thickness 0.5-3 mm.
The transition layer alloy powder that the present invention prepares voluntarily has the Harmony of the hot physical difference of good material, and thus higher obdurability is applicable to laser melting coating reparation and the manufacture of cobalt base hard alloy hard-surface coating very much.
Principle of the present invention and feature are the process meanses by adopting laser melting coating compound coating, formed between the high rigidity of about 0.5--3mm, heat wear resistance, anti-metal at body upper surface and abrade the strong cobalt base hard alloy coating of ability, thus improve bar KOCKS sizing mill chuck work-ing life.The core of this invention technology manufactures high rigidity cobalt base hard alloy wear-resistant coating at bar KOCKS sizing mill chuck laser melting coating under without the need to the condition of preheating, reduces energy consumption and environmentally safe, radiationless, lower noise, the features such as comprehensive cost is low.
Embodiment
Embodiment 1.
Bar KOCKS sizing mill chuck surface laser melting coating prepares the technique of wear-resistant coating, comprises following process.
1, the preparation of transition layer laser cladding of material.
A, Ni-based A powdered alloy are that its chemical composition is.
Carbon 0.05-0.3% silicon 2-4% boron 1-3% chromium 0-8% iron 0-8% all the other be nickel.
B, cobalt-based B powdered alloy, its chemical composition is.
Carbon 0.25% silicon 0.9% chromium 27.0% molybdenum 5.5% iron 0-8% all the other be cobalt.
C, powder proportions.
Above-mentioned A, B two kinds of weight alloy ratio are 4:1.
Prepare on electronic balance by above-mentioned materials and ratio range, and carry out mixing more than 4 hours at special meal mixer.
2, working lining mechanical workout and removing surface.
The object of mechanical workout is in order to the working lining thickness needed for reserved laser melting coating, and removing surface is the important procedure ensureing coating and substrate combinating strength, and solvent or the clean-out system such as greasy dirt are removed, can with polishing or blast cleaning to rusty scale.
3, laser melting coating processing.
1) selection of powdered alloy and the adjustment of automatic powder feeding device.
According to the abrasive conditions of chuck, select and prepare and mix complete excessive layer powder, working lining powder, regulate automatic powder feeding device powder feeding rate, to meet powder feeding rate needed for coat-thickness.
2) laser cladding technological parameter.
Condensing lens f=250.
Cladding power P=2800.
Spot diameter D=2mm.
Cladding scan velocity V=600mm/min.
Overlapping rate 45%.
Cladding thickness 0.8mm.
Embodiment 2.
Bar KOCKS sizing mill chuck surface laser melting coating prepares the technique of wear-resistant coating, comprises following process.
1, the preparation of transition layer laser cladding of material.
A) Ni-based A powdered alloy, its chemical composition is.
Carbon 0.05-0.3% silicon 2-4% boron 1-3% chromium 0-8% iron 0-8% all the other be nickel.
B, cobalt-based B powdered alloy, its chemical composition is.
Carbon 0.25% silicon 0.9% chromium 27.0% molybdenum 5.5% iron 0-8% all the other be cobalt.
C, powder proportions.
Above-mentioned A, B two kinds of weight alloy ratio are 4:1.
Prepare on electronic balance by above-mentioned materials and ratio range, and carry out mixing more than 4 hours at special meal mixer.
2, working lining mechanical workout and removing surface.
The object of mechanical workout is in order to the working lining thickness needed for reserved laser melting coating, and removing surface is the important procedure ensureing coating and substrate combinating strength, and solvent or the clean-out system such as greasy dirt are removed, can with polishing or blast cleaning to rusty scale.
3, laser melting coating processing.
1) selection of powdered alloy and the adjustment of automatic powder feeding device.
According to the abrasive conditions of chuck, select and prepare and mix complete excessive layer powder, working lining powder, working lining powder is known technology, and the trade mark is Stelite 1, regulates automatic powder feeding device powder feeding rate, to meet powder feeding rate needed for coat-thickness.
2) laser cladding technological parameter.
Transition layer is identical with working lining laser cladding technological parameter.
Condensing lens f=400.
Cladding power P=8000.
Spot diameter D=6mm.
Cladding scan velocity V=1000mm/min.
Overlapping rate 50%.
Cladding thickness 2mm.
Claims (3)
1. bar KOCKS sizing mill chuck surface laser melting coating prepares a method for wear-resistant coating, it is characterized in that comprising the following steps:
1, the preparation of transition layer laser cladding of material
A. Ni-based A powdered alloy, its chemical composition is
Carbon 0.05-0.3% silicon 2-4% boron 1-3% chromium 0-8% iron 0-8% all the other be nickel
B. cobalt-based B powdered alloy, its chemical composition is
Carbon 0.25% silicon 0.9% chromium 27.0% molybdenum 5.5% iron 0-8% all the other be cobalt
C. powder proportions
Above-mentioned A, B two kinds of weight alloy ratio are 3 ~ 5:1
Prepare on electronic balance by above-mentioned materials and ratio range, and carry out mixing more than 4 hours at special meal mixer.
2. working lining mechanical workout and removing surface
The object of mechanical workout is in order to the working lining thickness needed for reserved laser melting coating, and removing surface is the important procedure ensureing coating and substrate combinating strength, and solvent or the clean-out system such as greasy dirt are removed, can with polishing or blast cleaning to rusty scale.
3. laser melting coating processing
1) selection of powdered alloy and the adjustment of automatic powder feeding device
According to the abrasive conditions of chuck, select and prepare and mix complete excessive layer powder, working lining powder, (working lining powder is known technology, and the trade mark is Stelite 1), regulate automatic powder feeding device powder feeding rate, to meet powder feeding rate needed for coat-thickness;
2) laser cladding technological parameter
Condensing lens f=200 ~ 400
Cladding power P=2000 ~ 10000W
Spot diameter D=2 ~ 6mm
Cladding scan velocity V=200 ~ 1000mm/min
Overlapping rate 40 ~ 60%
Cladding thickness 0.5-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310264563.7A CN104250806A (en) | 2013-06-28 | 2013-06-28 | Method for preparing wear resistant coating on bar material KOCKS sizing mill clamping chuck surface through laser cladding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310264563.7A CN104250806A (en) | 2013-06-28 | 2013-06-28 | Method for preparing wear resistant coating on bar material KOCKS sizing mill clamping chuck surface through laser cladding |
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| CN104250806A true CN104250806A (en) | 2014-12-31 |
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| CN201310264563.7A Pending CN104250806A (en) | 2013-06-28 | 2013-06-28 | Method for preparing wear resistant coating on bar material KOCKS sizing mill clamping chuck surface through laser cladding |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386041A (en) * | 2015-12-10 | 2016-03-09 | 西北有色金属研究院 | Method for preparing modified composite Hf-Ta metal coating through laser cladding |
| CN106567067A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for allowing roller surface of hot roller to have good corrosion resistance after repairing |
| CN106567066A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | A hot roller laser restoration method adopting a broadband laser beam |
| CN106567064A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | A hot roller laser restoration method capable of prolonging the service lifetime of a hot roller |
| CN106567065A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for allowing roller surface of hot roller to have good thermal hardness after repairing |
| CN106567068A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for hot roller with toughness and strength |
| CN107849700A (en) * | 2015-12-01 | 2018-03-27 | 株式会社Ihi | Possess the slide unit of abrasion performance envelope and the forming method of abrasion performance envelope |
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| KR20040006159A (en) * | 2002-07-11 | 2004-01-24 | 현대자동차주식회사 | Co radical powder for laser cladding |
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| CN102453904A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光成套设备有限公司 | Method for preparing wear-resistant coating on surface of driving sheave race of elevator by laser cladding |
| CN102453897A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光成套设备有限公司 | Method for manufacturing tungsten carbide hard alloy wear-resistant coating of rod and wire hot press roll |
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| KR20040006159A (en) * | 2002-07-11 | 2004-01-24 | 현대자동차주식회사 | Co radical powder for laser cladding |
| CN1932082A (en) * | 2006-10-12 | 2007-03-21 | 沈阳大陆激光成套设备有限公司 | Fast laser depositing process of preparing antinwear heat resistant composite coating on surface of crystallizer |
| CN101457378A (en) * | 2007-12-11 | 2009-06-17 | 沈阳大陆激光技术有限公司 | Laser forming electro-galvanizing wire conducting roller and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567067A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for allowing roller surface of hot roller to have good corrosion resistance after repairing |
| CN106567066A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | A hot roller laser restoration method adopting a broadband laser beam |
| CN106567064A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | A hot roller laser restoration method capable of prolonging the service lifetime of a hot roller |
| CN106567065A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for allowing roller surface of hot roller to have good thermal hardness after repairing |
| CN106567068A (en) * | 2015-10-13 | 2017-04-19 | 丹阳宏图激光科技有限公司 | Laser repairing method for hot roller with toughness and strength |
| CN107849700A (en) * | 2015-12-01 | 2018-03-27 | 株式会社Ihi | Possess the slide unit of abrasion performance envelope and the forming method of abrasion performance envelope |
| CN105386041A (en) * | 2015-12-10 | 2016-03-09 | 西北有色金属研究院 | Method for preparing modified composite Hf-Ta metal coating through laser cladding |
| CN105386041B (en) * | 2015-12-10 | 2017-12-15 | 西北有色金属研究院 | A kind of method that laser melting coating prepares modified compound Hf Ta metal coatings |
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Application publication date: 20141231 |