CN104018032A - Cladding material and method for repairing hot rolls by virtue of laser cladding - Google Patents
Cladding material and method for repairing hot rolls by virtue of laser cladding Download PDFInfo
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- CN104018032A CN104018032A CN201410281690.2A CN201410281690A CN104018032A CN 104018032 A CN104018032 A CN 104018032A CN 201410281690 A CN201410281690 A CN 201410281690A CN 104018032 A CN104018032 A CN 104018032A
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Abstract
The invention provides a cladding material for repairing hot rolls by virtue of laser cladding. The cladding material is nickel-based self-fluxing alloy powder Ni60A into which a TiC hard phase is added, wherein the addition amount of the TiC hard phase is 5%-15 wt%; the nickel-based self-fluxing alloy powder Ni60A is composed of the following components in percentage by weight: 0.5-1.1% of C, 3.5-5.5% of Si, 3.0-4.5% of B, 15-20% of Cr, 0-5.0% of Fe, and the balance of Ni. Preferably, the particle size of the nickel-based self-fluxing alloy powder Ni60A is 150-320 meshes, the particle size of the TiC hard phase is 300 meshes, and the purity is 99%. A cladding layer prepared by using the cladding material disclosed by the invention can restore the original size of failed hot rolls, and the hardness, wear resistance and thermal fatigue resistance of the cladding layer are all more excellent than those of a base material, so that the service life of the cladding layer is prolonged, the roll consumption is reduced, and the production cost of enterprises is reduced. The invention also provides a method for repairing hot rolls by laser cladding.
Description
Technical field
The invention belongs to laser melting and coating technique field, particularly a kind of laser melting coating is repaired cladding material and the method for hot roll.
Background technology
Once there is wear out failure in roller surface, will cause whole roll to be scrapped, this can cause huge waste of material.If roll entirety is changed to high speed steel rider or Wimet roller can increase considerably cost, and be great waste for core of the roll material.Therefore the remediation intensification of the roll to wear out failure becomes the great difficult problem of long-term puzzlement roll manufacturing.Built-up welding reparation is the technology of most study in roll reparation field, roll overlaying refers to after having removed the fatigue layer or defect of roller surface, adopt the processing method of employing science and suitable resurfacing welding material that the roll of loss is repaired to green diameter, its major advantage is that roll diameter of roller is constant.But technology for repairing surfacing exists many drawbacks, as complex process, hardness is not too high, and productivity is low, when built-up welding roll easily produce crack, come off, the defect such as overlap, slag inclusion.Hot-spraying techniques is that a kind of thermal source that uses makes coated material be heated to fusing or semi-molten state, thereby then adopts high-speed gas to make surfacing dispersing and disintegrating and the technological process to matrix surface formation coating by its high-speed impact.The performances such as it is wear-resistant, anti-oxidant, anti-corrosion that coating has.But the main limitation of this technology is that coating and base material bonding strength are lower, and there is hole and unrelieved stress in coating, poor toughness, and machinability is poor, easily occurs that cracking peels off in the serious wear operation of rolling.Hot spray welding technology grows up on hot-spraying techniques basis, and hot surfacing comprises plasma spray, flame spray welding etc.It is that sprayed coating is carried out to a remelting processing again, adopt thermal source to make coated material at matrix surface refuse or partial melting, realize between coating internal particle and the metallurgical binding of coating and matrix, can effectively eliminate hole, made component surface obtain the well behaved coating of one deck.But the shortcoming of this technology is mainly hot surfacing powder must match with base material, and in hot surfacing treating processes, the deformation ratio thermospray of base material is much bigger.Laser melting and coating technique is the process for modifying surface of a kind of high-quality, efficient, energy-conservation and environmental protection, has huge application potential at numerous areas such as military affairs, aviation aerospace, shipbuilding, iron and steel.Compared with its process for modifying surface traditional with built-up welding, thermospray, hot surfacing etc., have the following advantages: (1) cladding layer extent of dilution is low, contaminated little, and can accurately control, thereby ensured that cladding layer can obtain the surface property of expection; (2) applicable material system is extensive, can, at low melting point metal surface cladding high-meltiing alloy powder, also can carry out laser melting coating to many stupaliths, obtains the metallurgical binding coating of complete densification; (3) less to body material heat affecting, and matrix thermal distortion is little, thereby can carry out local precinct laser cladding processing to Forming Workpiece surface; (4) can, according to use properties requirement, match different cladding material systems by design, thereby obtain desirable cladding layer; (5) can carry out repair process to the component that lost efficacy; (6) coat-thickness is adjustable controlled, and technique is flexible, easily is automated.Therefore, laser melting and coating technique remediation intensification roller surface technology becomes and improves roll wear resistance, extends important development direction and the approach of roll working life, has obtained research widely.
Summary of the invention
The object of the present invention is to provide a kind of laser melting coating to repair the cladding material of hot roll, the cladding layer abrasion resistance properties and the heat-resistant anti-fatigue performance that adopt this cladding material to prepare are better, longer service life; The present invention also provides a kind of laser melting coating to repair the method for hot roll simultaneously.
The present invention is achieved through the following technical solutions:
Laser melting coating is repaired a cladding material for hot roll, and described cladding material is the self-fusible alloy powder of nickel-base Ni60A that adds TiC hard phase, and wherein the addition of TiC hard phase is: 5%～15wt%; The moiety of self-fusible alloy powder of nickel-base Ni60A is by weight percentage: 0.5%～1.1% C, 3.5%～5.5% Si, 3.0%～4.5% B, 15%～20% Cr and 0～5.0% Fe, its surplus is Ni.
Preferably, the granularity of described self-fusible alloy powder of nickel-base Ni60A is 150～320 orders, and the granularity of TiC hard phase is 300 orders, and purity is 99%.
The present invention also provides a kind of laser melting coating to repair the method for hot roll simultaneously, comprises the steps:
(1) cladding powder mixture ratio: add TiC hard phase in self-fusible alloy powder of nickel-base Ni60A, wherein the addition of TiC hard phase is: 5%～15wt%, self-fusible alloy powder of nickel-base Ni60A, its moiety is by weight percentage: 0.5%～1.1% C, 3.5%～5.5% Si, 3.0%～4.5% B, 15%～20% Cr and 0～5.0% Fe, and its surplus is Ni;
(2) the cladding powder in step (1) is mixed by mixed powder machine, the powder mixing, for roll wear invalid position, is carried out to laser melting coating reparation according to melting and coating process parameter.
Preferably, described melting and coating process parameter is: metallurgical hot roll is preheated to 200 DEG C, and powder sending quantity is 22g/min-32g/min, laser power P=1.8Kw-2.2Kw, and Gauss's hot spot radius R=3mm, scan velocity V=6mm/s-8mm/s, overlapping rate is 50%.
The cladding layer that adopts cladding material of the present invention to prepare, can not only recover the hot roll original size that lost efficacy, and cladding layer hardness, abrasion resistance properties, heat-resistant anti-fatigue performance are all more excellent than body material, have extended its work-ing life, reduce roller consumption, reduced enterprise's production cost.
Embodiment
Before the metallurgical hot roll of wear out failure is carried out to laser melting coating remediation intensification, first to carry out surface preparation to it: under room temperature, metallurgical hot roll surface abrasion invalid position is polished, remove the layer that lost efficacy, oil removing, rust cleaning, and clean up with alcohol.And with Dye inspectiong, it is tested, the defect such as require surperficial flawless, pore, be mingled with.
The hot roll material of strengthening to be repaired in the present invention is 60CrMnMo, and its moiety is by weight percentage: C (0.64%), Cr (1.04%), Mn (0.88%), Mo (0.22%), Si (0.33%), P (0.016%), S (0.038%), O (0.0049%).
Cladding material described in the present invention is the self-fusible alloy powder of nickel-base Ni60A that adds TiC hard phase, and wherein the addition of TiC hard phase is: 5%～15wt%; The moiety of self-fusible alloy powder of nickel-base Ni60A is by weight percentage: 0.5%～1.1% C, 3.5%～5.5% Si, 3.0%～4.5% B, 15%～20% Cr and 0～5.0% Fe, its surplus is Ni.
The granularity of described self-fusible alloy powder of nickel-base Ni60A is 150～320 orders, and the granularity of TiC hard phase is 300 orders, and purity is 99%.
Above-mentioned powdered alloy mixes by mixed powder machine, uses laser melting and coating technique cladding in roll wear invalid position in the powder mixing, and the hot roll that laser reinforcing is repaired carries out grinding and buffing.Cladding layer prepared by this cladding power formulations can improve its microstructure, improves its microhardness, abrasion resistance properties and heat-resistant anti-fatigue performance, extends its work-ing life.
Embodiment mono-:
Laser melting coating is repaired a method for hot roll, comprises the steps:
(1) selection of powdered alloy and mixing:
Select and have excellent wear energy and the commercial self-fusible alloy powder of nickel-base Ni60A powder good with the metallurgical consistency of matrix, its granularity is 150～320 orders; The granularity of TiC hard phase is 300 orders, and its adding proportion is 5wt%.Above-mentioned powder mixes by mixed powder machine.
(2) metallurgical hot roll is carried out to thermal pretreatment, be preheated to 200 DEG C, adjusting powder sending quantity is 22g/min;
Select IPG6KW optical fiber laser, form the laser cladding layer of even compact at 60CrMnMo metallurgical hot roll surface abrasion invalid position.Melting and coating process parameter is as follows: laser power P=1.8Kw, Gauss's hot spot radius R=3mm, scan velocity V=6mm/s, overlapping rate 50%.Afterwards cladding layer is carried out to grinding and buffing.
Can obtain its Vickers' hardness by the performance of detection repair place cladding layer and reach 459.1HV
0.3, be 2.5 times of former roll material; Wear resistance improves more than 3 times than former roll material; Heat-resistant anti-fatigue performance also effectively improves, and the crack initiation time is more late than former roll material, and crack growth rate is slower than former roll material.
Embodiment bis-:
Laser melting coating is repaired a method for hot roll, comprises the steps:
(1) selection of powdered alloy and mixing:
Select and have excellent wear energy and the commercial self-fusible alloy powder of nickel-base Ni60A powder good with the metallurgical consistency of matrix, its granularity is 150～320 orders; The granularity of TiC hard phase is 300 orders, and its adding proportion is 15wt%.Above-mentioned powder mixes by mixed powder machine.
(2) metallurgical hot roll is carried out to thermal pretreatment, be preheated to 200 DEG C, adjusting powder sending quantity is 32g/min;
Select IPG6KW optical fiber laser, form the laser cladding layer of even compact at 60CrMnMo metallurgical hot roll surface abrasion invalid position.Melting and coating process parameter is as follows: laser power P=2.2Kw, Gauss's hot spot radius R=3mm, scan velocity V=8mm/s, overlapping rate 50%.Afterwards cladding layer is carried out to grinding and buffing.
Can obtain its Vickers' hardness by the performance of detection repair place cladding layer and reach 662.5HV
0.3, be 3.6 times of former roll material; Wear resistance improves more than 40 times than former roll material; Heat-resistant anti-fatigue performance also effectively improves, and the crack initiation time is more late than former roll material, and crack growth rate is slower than former roll material.
Above embodiment is just for the ease of understanding the technical scheme of the present patent application; do not form the restriction to protection domain; every interior scheme perhaps according to the technical spirit of the present patent application, any simple modification, equivalent variations and the modification of above scheme being formed that does not depart from the present patent application technical scheme, within all should being included into and belonging to the present patent application protection domain.
Claims (4)
1. laser melting coating is repaired a cladding material for hot roll, it is characterized in that, described cladding material is the self-fusible alloy powder of nickel-base Ni60A that adds TiC hard phase, and wherein the addition of TiC hard phase is: 5%～15wt%; The moiety of self-fusible alloy powder of nickel-base Ni60A is by weight percentage: 0.5%～1.1% C, 3.5%～5.5% Si, 3.0%～4.5% B, 15%～20% Cr and 0～5.0% Fe, its surplus is Ni.
2. laser melting coating according to claim 1 is repaired the cladding material of hot roll, it is characterized in that, the granularity of described self-fusible alloy powder of nickel-base Ni60A is 150～320 orders, and the granularity of TiC hard phase is 300 orders, and purity is 99%.
3. laser melting coating is repaired a method for hot roll, it is characterized in that, comprises the steps:
(1) cladding powder mixture ratio: add TiC hard phase in self-fusible alloy powder of nickel-base Ni60A, wherein the addition of TiC hard phase is: 5%～15wt%, self-fusible alloy powder of nickel-base Ni60A, its moiety is by weight percentage: 0.5%～1.1% C, 3.5%～5.5% Si, 3.0%～4.5% B, 15%～20% Cr and 0～5.0% Fe, and its surplus is Ni;
(2) the cladding powder in step (1) is mixed by mixed powder machine, the powder mixing, for roll wear invalid position, is carried out to laser melting coating reparation according to melting and coating process parameter.
4. laser melting coating according to claim 3 is repaired the method for hot roll, it is characterized in that, described melting and coating process parameter is: metallurgical hot roll is preheated to 200 DEG C, powder sending quantity is 22g/min-32g/min, laser power P=1.8Kw-2.2Kw, Gauss's hot spot radius R=3mm, scan velocity V=6mm/s-8mm/s, overlapping rate is 50%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290703A (en) * | 2015-11-04 | 2016-02-03 | 北京工业大学 | Method for repairing abraded hot roll through submerged arc bead welding and laser cladding |
| CN106319288A (en) * | 2015-07-03 | 2017-01-11 | 中国科学院上海硅酸盐研究所 | Directly-introduced and in-situ generated TiC particle commonly-enhanced nickel-base composite and preparing method and application thereof |
| CN109055826A (en) * | 2018-08-01 | 2018-12-21 | 芜湖彰鸿工程技术有限公司 | A kind of raising wearability roll laser cladding alloy material and application method |
| CN109536950A (en) * | 2018-12-12 | 2019-03-29 | 江苏大学 | A kind of composite powder improving aluminum alloy heat fatigue behaviour by Laser Cladding Treatment |
| CN109576603A (en) * | 2019-01-30 | 2019-04-05 | 沈阳大陆激光工程技术有限公司 | A kind of laser melting coating repairs the functional layer alloy powder and method of finish rolling De-scaling box pinch roller |
| CN113319272A (en) * | 2021-06-03 | 2021-08-31 | 泰尔(安徽)工业科技服务有限公司 | Metal ceramic powder material for wear-resistant layer of section steel conveying roller and manufacturing method of wear-resistant layer |
| CN113930759A (en) * | 2021-09-26 | 2022-01-14 | 南京钢铁股份有限公司 | Preparation method of wear-resistant and corrosion-resistant laser cladding repairing layer on surface of roller |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618867A (en) * | 2012-03-19 | 2012-08-01 | 湖南三泰新材料股份有限公司 | Composite reinforcement method for TiC/TiB2 base metal ceramic on surface of roller |
-
2014
- 2014-06-20 CN CN201410281690.2A patent/CN104018032A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618867A (en) * | 2012-03-19 | 2012-08-01 | 湖南三泰新材料股份有限公司 | Composite reinforcement method for TiC/TiB2 base metal ceramic on surface of roller |
Non-Patent Citations (3)
| Title |
|---|
| 王振廷等: "氩弧熔敷原位自生TiC/Ni60A复合涂层的滑动磨损特性", 《粉末冶金技术》 * |
| 王振廷等: "氩弧熔敷原位自生TiC/Ni60A复合涂层的滑动磨损特性", 《粉末冶金技术》, vol. 26, no. 3, 30 June 2008 (2008-06-30), pages 183 - 186 * |
| 齐勇田等: "激光熔覆原位生成Ti(C0.3N0.7) 颗粒增强镍基复合熔覆层", 《应用激光》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319288A (en) * | 2015-07-03 | 2017-01-11 | 中国科学院上海硅酸盐研究所 | Directly-introduced and in-situ generated TiC particle commonly-enhanced nickel-base composite and preparing method and application thereof |
| CN105290703A (en) * | 2015-11-04 | 2016-02-03 | 北京工业大学 | Method for repairing abraded hot roll through submerged arc bead welding and laser cladding |
| CN109055826A (en) * | 2018-08-01 | 2018-12-21 | 芜湖彰鸿工程技术有限公司 | A kind of raising wearability roll laser cladding alloy material and application method |
| CN109055826B (en) * | 2018-08-01 | 2019-12-10 | 永卓防务科技有限公司 | roller laser cladding alloy material for improving wear resistance and using method |
| CN109536950A (en) * | 2018-12-12 | 2019-03-29 | 江苏大学 | A kind of composite powder improving aluminum alloy heat fatigue behaviour by Laser Cladding Treatment |
| CN109576603A (en) * | 2019-01-30 | 2019-04-05 | 沈阳大陆激光工程技术有限公司 | A kind of laser melting coating repairs the functional layer alloy powder and method of finish rolling De-scaling box pinch roller |
| CN109576603B (en) * | 2019-01-30 | 2020-07-24 | 沈阳大陆激光工程技术有限公司 | Functional layer alloy powder and method for repairing pinch roll of finish rolling descaling box through laser cladding |
| CN113319272A (en) * | 2021-06-03 | 2021-08-31 | 泰尔(安徽)工业科技服务有限公司 | Metal ceramic powder material for wear-resistant layer of section steel conveying roller and manufacturing method of wear-resistant layer |
| CN113319272B (en) * | 2021-06-03 | 2023-03-03 | 泰尔(安徽)工业科技服务有限公司 | Metal ceramic powder material for wear-resistant layer of section steel conveying roller and manufacturing method of wear-resistant layer |
| CN113930759A (en) * | 2021-09-26 | 2022-01-14 | 南京钢铁股份有限公司 | Preparation method of wear-resistant and corrosion-resistant laser cladding repairing layer on surface of roller |
| CN113930759B (en) * | 2021-09-26 | 2023-11-03 | 南京钢铁股份有限公司 | Preparation method of wear-resistant corrosion-resistant laser cladding repair layer on roller surface |
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Application publication date: 20140903 |