CN106498308A - A kind of wear-resisting heat-resisting alloy material for small material roll laser alloying - Google Patents
A kind of wear-resisting heat-resisting alloy material for small material roll laser alloying Download PDFInfo
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- CN106498308A CN106498308A CN201611240841.5A CN201611240841A CN106498308A CN 106498308 A CN106498308 A CN 106498308A CN 201611240841 A CN201611240841 A CN 201611240841A CN 106498308 A CN106498308 A CN 106498308A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The present invention discloses a kind of wear-resisting heat-resisting alloy material for small material roll laser alloying, is characterized in that material composition proportioning by weight percentage is as follows：C：0.03 1.5%, Cr：3.1 6.0%, Si：0.5 1.3%, Ni：0.6 3.2%, Mn：0.40 0.89%, W：3.5 8.5%, Mo 3.00 6.30%, V：2.10 5.20%, Nb：1.0 3.2%, balance of Fe.Proportioning of the present invention by the technological parameter and each element composition of optimization design laser melting coating in dusty material, makes to improve 1 times through the small material roll surface hardness of cladding of the present invention, and wearability is greatly improved, and pass holding capacity increases.
Description
Technical field
The invention belongs to laser alloying technical field, the compound system of roll laser is rolled in more particularly to a kind of small material junior middle school
Make wear-resisting heat-resisting alloy material and process program.
Background technology
In small material production line, junior middle school's roll is big due to stress, and rotating speed slow time of contact, long temperature was high, to product matter
Amount affects less, so selection mainly considers safety and thermal fatigue resistance, carries out equilibrium between single life-span and Lathe quantity
Obtain optimal cost performance.Traditional junior middle school rolls roll material and is mainly steel rider, half steel rider and magnesium iron roller, and subject matter is embodied in abrasion
Amount is big, and fatigue crack seriously has roll breakage risk.Pass rolls for box hole and elliptical aperture in junior middle school, weares and teares uneven and oblique due to having
Wall is present causes single Lathe quantity very big, is to can guarantee that pass needs turning 28mm recover during bloom roll wear extent 4mm
Pass so that the access times of roll reduce roller consumption to be increased.It is more serious that roll contact time length fatigue is rolled in junior middle school, offline junior middle school
There is obscission, roll surface severe crack in roll local, once annular enclosed crackle occur just the risk of roll breakage.Bloom roll
Volume is big, normally due to rolling-mill housing is limited and strength demand roll neck allows use range for 70-100mm, wastes tight after scrapping
Weight.Part steel mill adopts process for treating surface such as built-up welding and Laser Alloying Treatment, a certain degree of roller that reduces to consume.But built-up welding
Technology heat affected area is big, easily causes roll breakage, and surface texture has very big inhomogeneities and the raising of roll campaign is not played
Remarkable result.Conventional laser alloying process, carries out Alloying Treatment in roller surface, though process layer depth can in 0.2-0.3mm
The hardness of roll is significantly improved, but for the wear extent of area 3-5mm is rolled to junior middle school, can not still meet current small material production right
The urgent needss of cost control.If the laser melting coating for carrying out 1-2mm in roller surface using laser melting and coating technique, though can show
Write the raising life-span but cost performance is not high.So, a kind of new technology urgently developed by small material junior middle school roll, meets junior middle school
The duty requirements of roll, while with very high cost performance.
Laser melting coating and laser alloying technology are all the rapid melting and solidification process produced by the laser beam using high-energy-density,
Alloy clad that mutually fuse and with heterogeneity Yu performance is formed with matrix in substrate surface.Their difference is sharp
In light cladding, clad material is completely melt and the very thin composition influence to cladding layer of matrix melts layer is minimum；And laser alloying is then
It is in the melt surface layer of matrix to add alloying element, so as to form the new alloy-layer with base material as base.Of the invention then be
Innovate a kind of modified cladding between laser melting coating and laser alloying of big dilution rate, the dilution rate of conventional laser cladding
All 15% or so, and dilution rate is amplified to 50% or so by laser modified cladding, using wearing for optical fiber laser short wavelength laser
Power and the mixing effect to molten bath, obtain the new alloying layer of modified cladding, material with alloy-layer after matrix is melted jointly thoroughly
Matter is between alloy material and basic material.
Excessively a kind of coating of laser nanometer cermet alloying of metallurgical hot roller of the applicant's once invention
（CN200610047996.7）Though at present in envelope curve operation, after alloying, the hardness of roller surface is obtained HS15-HS25's
Improve, but due to lacking the alloying element of solution strengthening, the life-span of roll improves 80% after alloying, for current metallurgical row
Industry drop urgent needss originally still have deficiency.The roll of small material junior middle school at present is to meet safety and thermal fatigue property demand,
The hardness of roll is typically not enough in HS45 or so wearabilities.Junior middle school's roll operating temperature is high, and wearability deficiency is due to hardness
With not enough common exercising result in terms of elevated temperature strength two.For meeting the duty requirements of small material junior middle school roll, using sharp
Light modification melting and coating technique on the matrix for meeting safety and thermal fatigue demand is prepared one layer and is well combined with matrix and is had
The alloying cladding layer of wearability and elevated temperature strength is the task of top priority.
Content of the invention
The purpose of the present invention is aiming at the deficiencies in the prior art, and research and development one kind was rolled suitable for current small material junior middle school
Roller cast steel, half steel and magnesium iron material, and meet the wear-resisting heat-resisting alloy material of small material junior middle school roll duty requirements, and
Configuration solvent prepares the coating of alloy material, and the coating of the special-shaped roll pass alloy material of failure is preset.The present invention can be little
Roll the alloy powder that roller surface pre-set thickness is 0.2-0.5mm thickness and manufactured by laser modified melting and coating technique in the junior middle school of type section bar
Alloying layer, while alloying layer hardness is improved, elevated temperature strength is improved.
As the dilution rate of laser modified cladding is up to 50%, the impact of the composition of matrix to alloying layer is very big.So pin
The material species of small material junior middle school roll is once classified, roll material alloying element content difference is simultaneously little, and
And the main factor of impact alloying layer is carbon content during laser modified cladding, so small material junior middle school is rolled
Roll is divided into three carbon content grades C%：0.7%th, 1.5% and 3.2%.In order difference junior middle school is flexibly met, to roll roll material laser modified
The demand of cladding, considers the design of the design and processes for carrying out alloying powder.
The technical scheme that the present invention is given is：A kind of wear-resisting heat-resisting alloy material for small material roll laser alloying
Material, is characterized in that material composition proportioning by weight percentage is as follows.
C：0.03-1.5%, Cr：3.1-6.0%, Si：0.5-1.3%, Ni：0.6-3.2%, Mn：0.40-0.89%, W：3.5-
8.5%, Mo 3.00-6.30%, V：2.10-5.20%, Nb：1.0-3.2%, balance of Fe.
The characteristics of this material powder is the carbon content of the matrix offer using small material junior middle school roll and alloy material
The alloying element of material interacts, and obtains the wear-resisting heat-resisting alloy layer for meeting design requirement while cost-effective.Alloy material
There are a large amount of carbides such as vanadium and niobium in material, primary carbide is formed during laser action as Hard Inclusion
Exist with intercrystalline strengthening particle, improve the macrohardness of alloying layer, vanadium and niobium be the formation element of strong carbide formed be
Primary carbide, the high-temperature resistant tempered performance for being favorably improved alloy-layer while crystal grain thinning hinder growing up for crystal grain, while
The carbon that vanadium and niobium are consumed in alloy-layer allows substantial amounts of tungsten, molybdenum and chromium to be solidly soluted in iron-based body；Remaining substantial amounts of conjunction
Gold element can be solid-solubilized in iron-based body the reinforcing for carrying out matrix except forming carbonization beyond the region of objective existence, strengthen ferritic elevated temperature strength, prevent
Roll is causing roller surface to soften reduction wear resistance at elevated temperature with the temperature rise in high temperature stocking contact process.Work along both lines, carry
The high temperature abrasion resistance of roll of high small material junior middle school.The laser melting coating of the inventions such as Dongguan University of Technology Li Sheng, Han Lifa is high hard
Nothing splits ferrous alloy special metals powder（CN200810218548.8）Obtain substantial amounts of objective room temperature hardness, but due to
The mass fraction of alloying element is less, and for the reinforcing of iron-based body is not sufficiently effective, high-temperature resistant tempered performance is not enough.Wuhan Gauss swashs
A kind of spheroidal graphite roll surface alloying processing mode before light Technology Co., Ltd. Jiang Han with Tian Weijun inventions
（CN201010125564.X）The alloy paste that is modulated using phenolic resin achieves the coating of 0.1-0.15mm, laser alloying
The thickness of alloy-layer is relatively limited afterwards.The present invention carries out the preparation of alloy pulp using resin aqueous solution as solvent,
The configuration of alloy powder is carried out using the resin aqueous solution of 4%-6%.The alloy powder and 40wt- of 60wt%-90wt% is carried out with water
10wt% resin aqueous solutions are modulated into slurry surface alloying coating, are coated in the surface 0.3-0.5mm thickness of roll, carry out after drying
Laser scanning.
The present invention carries out laser modified cladding using optical fiber laser, and short wavelength laser can enter to molten bath in melting process
The violent stirring of row, makes alloy powder and the top layer of matrix sufficiently be mixed.6KW optical fiber is adopted in actual mechanical process
Laser instrument, alloy powder and matrix surface are mixed to form 0.5-0.6mm alloying layers, and hardness reaches HS90；Simultaneously can be to matrix
Subsurface stratum carry out a laser quenching, have below alloying layer one layer of 0.6mm or so Laser Hardened Layer exist, firmly
Degree is between HS60-HS80.Modification is carried out to the tissue in the range of roller surface 1mm while cost-effective, has been improve
The elevated temperature strength and wearability on surface, improves life-span and the pass holding capacity of junior middle school's roll.
In the manufacture process of laser modified cladding, clear up first offline after roll working surface, the crackle on surface is adopted
Processed totally with the mode of turnery processing, cleaning is carried out with acetone and go the stain that degreases and become rusty.Cladding condition adopts cladding after possessing
Technological parameter：Power 1800-3500W, scanning speed 1000-3000mm/min, overlapping rate 45-65%, are stirred using 4% warm water of resin
The last roller surface thickness that is coated in of dissolving alloyed powder is mixed in 0.3-0.5mm, coating to be coated carries out laser modified molten after drying
Cover.
Compared with prior art, the invention has the beneficial effects as follows.
Surface hardness improves 1 times compared with existing overall roller, and wearability is greatly improved, and pass holding capacity increases.
The applicable more matrix materials of technique for overlaying are compared, is not affected by basic material, while tissue is evenly stable.With tradition
Laser-alloying Technolgy is compared, and the alloying layer thickness of laser modified cladding is greatly improved, and is improve by original 0.2-0.3mm
1 times reaches 0.5-0.6mm, and with hardness raising while, the alloying element of a large amount of solid solutions improves ferritic elevated temperature strength,
High temperature abrasion resistance is further improved；The presence of Laser Hardened Layer also improves wearability simultaneously.The resin solvent of new configuration and conjunction
The alloyed powder last layer that the alloy pulp of golden material modulation can achieve more scantling is preset.
Specific embodiment
Embodiment 1.
Laser modified cladding is carried out on graphitic steel bloom roll.By offline graphitic steel bloom roll turnery processing, by surface
Crackle processed by the way of turnery processing totally, carry out cleaning with acetone and go to degrease.The composition of alloying material is：Press
Percentage by weight meter, comprising C：0.8%, Cr：3.25%, Si：0.8%, Ni：2.0%, Mn：0.6%, W：4.5%, Mo 5.5%, V：
2.66%, Nb：1.8%, balance of Fe.Alloying material slurry is prepared, alloy material and resin proportioning is dissolved in water and is prepared modification
Cladding slurry, is coated in Producing Graphite Steel Rollers surface, and coating thickness is 0.3mm, after 2h is dried carries out laser modified cladding.Cladding
Technological parameter：Power 2600W, scanning speed 2000mm/min, overlapping rate 50% carry out laser modified cladding, after modified cladding
Roll sampling carries out high tempering heat treatment, as a result as shown in table 1-1.After heat treatment of 600 DEG C × 4h, modified cladding
The hardness of alloy-layer obtained small size rising, carry out heat treatment of 640 DEG C × 4h again, hardness is still kept on top.
The hardness of table 1-1 graphite steel matrix roll alloying layer high-temperature heat treatments.
Compared with existing overall roller, 1 times is improve through the Producing Graphite Steel Rollers surface hardness of cladding of the present invention, wearability
Greatly improve, pass holding capacity increases.Compared with conventional laser alloying technology, the alloying layer thickness of laser modified cladding
Greatly improve, improve 1 times by original 0.2-0.3mm and reach 0.5-0.6mm, and with hardness raising while, great Liang Gu
Molten alloying element improves ferritic elevated temperature strength, further improves high temperature abrasion resistance；The presence of Laser Hardened Layer simultaneously
Improve wearability.
Embodiment 2.
Laser modified cladding is carried out on magnesium iron bloom roll.By offline magnesium iron bloom roll turnery processing, splitting surface
Stricture of vagina is processed by the way of turnery processing totally, is carried out cleaning with acetone and is gone to degrease.The composition of alloying material is：By weight
Percentages, comprising C：0.03%, Cr：5%, Si：1.3%, Ni：1.6%, Mn：0.36%, W：5.3%, Mo 4.9%, V：3.0%, Nb：
2.5%, balance of Fe.Alloying material slurry is prepared, alloy material and resin proportioning is dissolved in water and is prepared modified cladding slurry,
Producing Graphite Steel Rollers surface is coated in, coating thickness is 0.35mm, after 2.5h is dried, carries out laser modified cladding.Melting and coating process is joined
Number：Power 3100W, scanning speed 2200mm/min, overlapping rate 59% carry out laser modified cladding, and the roll after modified cladding takes
Sample carries out high tempering heat treatment, as a result as shown in table 2-1.After heat treatment of 600 DEG C × 4h, the alloy of modified cladding
The hardness of layer has obtained small size rising, carries out heat treatment of 640 DEG C × 4h again, and hardness is still kept on top.
The hardness of table 2-1 magnesium iron matrix roll alloying layer high-temperature heat treatments.
Compared with existing overall roller, 1 times is improve through the Producing Graphite Steel Rollers surface hardness of cladding of the present invention, wearability
Greatly improve, pass holding capacity increases.Compared with conventional laser alloying technology, the alloying layer thickness of laser modified cladding
Greatly improve, improve 1 times by original 0.2-0.3mm and reach 0.5-0.6mm, and with hardness raising while, great Liang Gu
Molten alloying element improves ferritic elevated temperature strength, further improves high temperature abrasion resistance；The presence of Laser Hardened Layer simultaneously
Improve wearability.
Embodiment 3.
Laser modified cladding is carried out on cast steel small material bloom roll.By offline cast steel small material bloom roll turning
Processing, the crackle on surface is processed by the way of turnery processing totally, cleaning is carried out with acetone and is gone to degrease.Alloying material
Composition be：By weight percentage, comprising C：1.4%, Cr：3.5%, Si：0.9%, Ni：1.2%, Mn：0.55%, W：8.0%, Mo
5.2%, V：3.9%, Nb：2.9%, balance of Fe.Alloying material slurry is prepared, alloy material and resin proportioning are dissolved in water system
Standby modification cladding slurry, is coated in Producing Graphite Steel Rollers surface, and coating thickness is 0.4mm, carries out laser modified molten after 2h is dried
Cover.Melting and coating process parameter：Power 2100W, scanning speed 1500mm/min, overlapping rate 50% carry out laser modified cladding.Modified molten
Roll sampling after covering carries out high tempering heat treatment, as a result as shown in table 3-1.After heat treatment of 600 DEG C × 4h, change
The hardness of the alloy-layer of property cladding has obtained small size rising, carries out heat treatment of 640 DEG C × 4h again, and hardness still keeps
Advantage.
The hardness of table 3-1 cast steel substrate roll alloying layer high-temperature heat treatments.
Compared with existing overall roller, 1 times is improve through the Producing Graphite Steel Rollers surface hardness of cladding of the present invention, wearability
Greatly improve, pass holding capacity increases.Compared with conventional laser alloying technology, the alloying layer thickness of laser modified cladding
Greatly improve, improve 1 times by original 0.2-0.3mm and reach 0.5-0.6mm, and with hardness raising while, great Liang Gu
Molten alloying element improves ferritic elevated temperature strength, further improves high temperature abrasion resistance；The presence of Laser Hardened Layer simultaneously
Improve wearability.
Claims (4)
1. a kind of wear-resisting heat-resisting alloy material for small material roll laser alloying, it is characterised in that the material composition is pressed
The proportioning of percentage by weight meter is as follows：
C：0.03-1.5%, Cr：3.1-6.0%, Si：0.5-1.3%, Ni：0.6-3.2%, Mn：0.40-0.89%, W：3.5-
8.5%, Mo 3.00-6.30%, V：2.10-5.20%, Nb：1.0-3.2%, balance of Fe.
2. the wear-resisting heat-resisting alloy material for small material roll laser alloying according to claim 1, its feature
It is that material composition proportioning by weight percentage is as follows：
C：0.8%, Cr：3.25%, Si：0.8%, Ni：2.0%, Mn：0.6%, W：4.5%, Mo 5.5%, V：2.66%, Nb：1.8%, remaining
Measure as Fe.
3. the wear-resisting heat-resisting alloy material for small material roll laser alloying according to claim 1, its feature
It is that material composition proportioning by weight percentage is as follows：
C：0.03%, Cr：5%, Si：1.3%, Ni：1.6%, Mn：0.36%, W：5.3%, Mo 4.9%, V：3.0%, Nb：2.5%, surplus
For Fe.
4. the wear-resisting heat-resisting alloy material for small material roll laser alloying according to claim 1, its feature
It is that material composition proportioning by weight percentage is as follows：
C：1.4%, Cr：3.5%, Si：0.9%, Ni：1.2%, Mn：0.55%, W：8.0%, Mo 5.2%, V：3.9%, Nb：2.9%, remaining
Measure as Fe.
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| CN109967535A (en) * | 2017-12-28 | 2019-07-05 | 西安威科多机电设备有限公司 | For rolling the loop back roll and its manufacturing method of height stick, wire rod facility |
| CN110257826A (en) * | 2019-07-19 | 2019-09-20 | 燕山大学 | Grain roll bearing position laser cladding method and laser melting coating alloy powder |
| CN111719148A (en) * | 2020-06-28 | 2020-09-29 | 南京中科煜宸激光技术有限公司 | Preparation process of laser cladding Fe-Cr alloy wear-resistant coating on surface of pinch roll in steel mill |
| CN113755836A (en) * | 2021-09-02 | 2021-12-07 | 西安陕鼓动力股份有限公司 | Method for improving local wear resistance of main shaft through high-nickel iron-based powder laser alloying |
| CN113832462A (en) * | 2021-09-24 | 2021-12-24 | 河钢股份有限公司承德分公司 | Laser cladding composite deburring roller and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967535A (en) * | 2017-12-28 | 2019-07-05 | 西安威科多机电设备有限公司 | For rolling the loop back roll and its manufacturing method of height stick, wire rod facility |
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| CN110257826A (en) * | 2019-07-19 | 2019-09-20 | 燕山大学 | Grain roll bearing position laser cladding method and laser melting coating alloy powder |
| CN111719148A (en) * | 2020-06-28 | 2020-09-29 | 南京中科煜宸激光技术有限公司 | Preparation process of laser cladding Fe-Cr alloy wear-resistant coating on surface of pinch roll in steel mill |
| CN113755836A (en) * | 2021-09-02 | 2021-12-07 | 西安陕鼓动力股份有限公司 | Method for improving local wear resistance of main shaft through high-nickel iron-based powder laser alloying |
| CN113755836B (en) * | 2021-09-02 | 2024-02-06 | 西安陕鼓动力股份有限公司 | Method for improving local wear resistance of main shaft by high nickel-iron-based powder laser alloying |
| CN113832462A (en) * | 2021-09-24 | 2021-12-24 | 河钢股份有限公司承德分公司 | Laser cladding composite deburring roller and preparation method thereof |
| CN114752930A (en) * | 2022-04-11 | 2022-07-15 | 鞍钢实业集团冶金机械有限公司 | Foot roller of continuous casting crystallizer and manufacturing method thereof |
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Application publication date: 20170315 Assignee: SHENYANG DALU LASER FLEXIBLE MANUFACTURE TECHNOLOGY Co.,Ltd. Assignor: SHENYANG DALU LASER ENGINEERING CO.,LTD. Contract record no.: X2023210000125 Denomination of invention: A wear-resistant and heat-resistant alloy material for laser alloying of small profile rollers Granted publication date: 20190122 License type: Common License Record date: 20230921 |
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