CN103602789B - Laser strengthening process for effective control of quenching deformation of sliding plate - Google Patents

Laser strengthening process for effective control of quenching deformation of sliding plate Download PDF

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Publication number
CN103602789B
CN103602789B CN201310497777.9A CN201310497777A CN103602789B CN 103602789 B CN103602789 B CN 103602789B CN 201310497777 A CN201310497777 A CN 201310497777A CN 103602789 B CN103602789 B CN 103602789B
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slide plate
laser
reverse
quenching
sliding plate
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CN201310497777.9A
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CN103602789A (en
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不公告发明人
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Guangzhou Longfeng Fluid Machinery Co., Ltd.
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蒋超
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Abstract

The invention relates to a laser strengthening process of a sliding plate. The process comprises the following steps: A, conducting surface treatment on a sliding plate and detecting the sliding plate; B, coating a laser light absorption paint on both sides of the sliding plate; C, adjusting tool and optimizing process parameters according to the detection results, and fixing the slide plate on the tool; carrying out laser quenching on each region of the back side in a scattering manner, wherein the quenching area on the back side accounts for 1/3 to 2/5 of the total area of the back side; and carrying out laser quenching on the right side of the sliding plate in a scattering manner; and D, conducting detection. The laser strengthening process of the sliding plate can conveniently correct the deformation of the sliding plate, and the overall deformation of sliding plate with thickness of less than 50 mm can be effectively controlled within 0.5 mm and the sliding plate has a surface hardness of 52-56 HRC, so as to meet the usage requirements.

Description

The laser reinforcing process of the slide plate of the quenching strain of effective control slide plate
The application is divisional application, the application number of original application: 201210166344.0, the applying date: 2012-05-27, invention and created name " laser reinforcing process of slide plate ".
Technical field
The present invention relates to a kind of laser-quenching method, especially a kind of laser-quenching method of sled surface.
Background technology
Steel mill is varied by slide plate kind, have single material and composite point, differ in size, thickness is not etc.In order to reach the requirement of steel mill's environment for use, slide plate all requires quench treatment to be done in slide plate front, to ensure the surface abrasion resistance of slide plate in technology establishment.Common quenching method topmost problem in the quenching of slide plate is because the input of heat makes slide plate produce large distortion, distortion.Make it plane and do not reach technical requirements and service requirements, directly scrap, and plate is thinner time serious, size more gross distortion is more severe.
Laser quenching application laser quenching technology, is utilize the laser beam rapid heating steel material surface after focusing on, makes it undergo phase transition, form the process of martensite quench-hardened case.The power density of laser quenching is high, and speed of cooling is fast, does not need water or wet goods heat-eliminating medium, be clean, quenching technology fast.Because the thickness of slide plate is too thin, be generally less than 50mm, common laser-quenching technique is difficult to the deflection controlling slide plate, slide plate after laser quenching cannot be used, how laser quenching is applied to the strengthening of slide plate, especially the slide plate how being less than 50mm to thickness carries out laser quenching makes it meet service requirements, is the problem that those skilled in the art needs to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and carries out laser quenching to sled surface, effectively controls the quenching strain of slide plate, makes it meet the laser reinforcing process of the slide plate of service requirements.
In order to solve the problems of the technologies described above, the laser reinforcing process that the invention provides a kind of slide plate comprises the following steps:
A. the surface of slide plate is processed, slide plate is detected;
B. at slide plate tow sides coating laser light absorption paint;
C. according to detected result adjustment frock, Optimizing Process Parameters, is fixed on slide plate in frock; First the reverse side of slide plate is divided into multiple uniform region, carries out laser quenching discretely to the regional of reverse side, the area summation controlling reverse side hardened area accounts for 1/3 to 2/5 of the slide plate reverse side total area; Then quench to the front of slide plate discretely, until slide plate front all completes quenching, slide plate reaches level requirements or reverse side is protruding; If slide plate reverse side is protruding, after slide plate cooling, remove frock, quenching correction is carried out to the position of slide plate reverse side projection, until by till deformation amount controlling is within 0.5mm;
Be that light source carries out lap connection scanning to slide plate with fast-transverse-flow CO2 laser; Laser power is 1900W to 2300W, and absolute altitude is 260mm to 275mm, and spot size is 15mm × 1.8mm, and sweep velocity is 400mm/min to 500mm/min, and amount of lap is 2mm;
D. detect.
In order to improve the specific absorption of sled surface to laser, a kind of preferred technical scheme is: in above-mentioned steps B, the thickness of dope layer is 0.25mm to 0.35mm.
In order to improve the specific absorption of sled surface to laser further, a kind of preferred technical scheme is: in above-mentioned steps B, the component of coating and weight percent content are silica powder: 90% to 97%, graphite: 1% to 3%, resol: 1% to 4%, molybdenum-iron: 1% to 3%, solvent is alcohol.In coating, appropriate interpolation molybdenum-iron can improve the hardness on quenching tail skid surface, and the coating of this composition has good flow, and coating is convenient, coordinates above-mentioned laser-quenching technique method, the quenching effect of slide plate can be made better.
In order to make slide plate to be fortified successfully quench, and obtain better quenching effect, a kind of preferred technical scheme is: the dust on slide plate, greasy dirt, corrosion are removed by above-mentioned steps A; Detect surface hardness and the deflection of slide plate.
In order to ensure the quenching effect of slide plate, a kind of preferred technical scheme is: above-mentioned steps D detects sled surface hardness; Detect slide plate deflection; Harmless dye-penetrant inspection is carried out to slide plate.
In order to better deposit the slide plate after strengthening, a kind of preferred technical scheme is: after above-mentioned steps D, cleared up by qualified slide plate, surface oils, packaging, warehouse-in.
Technique scheme of the present invention has the following advantages compared to existing technology: the laser reinforcing process of slide plate of the present invention is when carrying out laser quenching, first the reverse side of slide plate is divided into multiple uniform region according to original deformation rule, discretely laser quenching is carried out to the regional of reverse side, be about 75% of front total deformation by the reverse side deformation amount controlling of slide plate, now the front of slide plate is protruding, and reverse side tensile stress is even; Then regularly quench to the front of slide plate discretely, until slide plate front all completes quenching, now slide plate reaches level requirements or reverse side projection; As slide plate reverse side is protruding, after slide plate cooling, remove frock, detect slide plate bulk deformation amount, more again carry out quenching correction to the position of slide plate reverse side projection, limit quenching corrects limit and measures, till reaching requirement.This technique is after sled surface carries out laser quenching, and can correct the deflection of slide plate easily, the bulk deformation that thickness is less than the slide plate of 50mm is effectively controlled within 0.5mm, and the surface hardness of slide plate is 52 ~ 56HRC, meets service requirements.
Embodiment
The concrete steps of the laser reinforcing process of the slide plate of the present embodiment are as follows:
A. the surface of slide plate is processed, slide plate is detected.Dust on slide plate, greasy dirt, corrosion are removed; Detect surface hardness and the deflection of slide plate.
B. at slide plate tow sides coating laser light absorption paint.The component of coating and weight percent content are silica powder: 95%, graphite: 2%, resol: 2%, molybdenum-iron: 1%, solvent is alcohol.The thickness of dope layer is 0.3mm.
C. according to detected result adjustment frock, Optimizing Process Parameters, is fixed on slide plate in frock.First the reverse side of slide plate is divided into multiple uniform region according to original deformation rule, discretely laser quenching is carried out to the regional of reverse side, according to the expectancy analysis to deformation, the area summation controlling reverse side hardened area accounts for 2/5 of the slide plate reverse side total area, now the front of slide plate is protruding, and reverse side tensile stress is even.Then quench to the front of slide plate discretely, until slide plate front all completes quenching, now slide plate reaches level requirements or reverse side projection.If there is the situation of reverse side projection, after slide plate cooling, remove frock, detect slide plate bulk deformation amount, carry out quenching correct the position of slide plate reverse side projection, limit quenching corrects limit measurement, until by till deformation amount controlling is within 0.5mm;
Be that light source carries out lap connection scanning to slide plate with fast-transverse-flow CO2 laser; Laser power is 2000W, and absolute altitude is 265mm, and spot size is 15mm × 1.8mm, and sweep velocity is 450mm/min, and amount of lap is 2mm;
D. detect.Detect sled surface hardness; Detect slide plate deflection; Harmless dye-penetrant inspection is carried out to slide plate.
E. cleared up by qualified slide plate, surface oils, packaging, warehouse-in.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.

Claims (1)

1. a laser reinforcing process for slide plate, is characterized in that, comprises the following steps:
A. the surface of slide plate is processed, slide plate is detected;
B. at slide plate tow sides coating laser light absorption paint;
C. according to detected result adjustment frock, Optimizing Process Parameters, is fixed on slide plate in frock; First the reverse side of slide plate is divided into multiple uniform region, carries out laser quenching discretely to the regional of reverse side, the area summation controlling reverse side hardened area accounts for 1/3 to 2/5 of the slide plate reverse side total area; Then quench to the front of slide plate discretely, until slide plate front all completes quenching, slide plate reaches level requirements or reverse side is protruding; If slide plate reverse side is protruding, after slide plate cooling, remove frock, quenching correction is carried out to the position of slide plate reverse side projection, until by till deformation amount controlling is within 0.5mm;
Be that light source carries out lap connection scanning to slide plate with fast-transverse-flow CO2 laser; Laser power is 2000W, and absolute altitude is 265mm, and spot size is 15mm × 1.8mm, and sweep velocity is 450mm/min, and amount of lap is 2mm;
D. detect;
In described step B, the component of coating and weight percent content are silica powder: 90% to 97%, graphite: 1% to 3%, resol: 1% to 4%, molybdenum-iron: 1% to 3%, solvent is alcohol;
Described steps A is removed at the dust on slide plate, greasy dirt, corrosion; Detect surface hardness and the deflection of slide plate;
Described step C detects sled surface hardness; Detect slide plate deflection; Harmless dye-penetrant inspection is carried out to slide plate.
CN201310497777.9A 2012-05-27 2012-05-27 Laser strengthening process for effective control of quenching deformation of sliding plate Expired - Fee Related CN103602789B (en)

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Application Number Priority Date Filing Date Title
CN201310497777.9A CN103602789B (en) 2012-05-27 2012-05-27 Laser strengthening process for effective control of quenching deformation of sliding plate

Related Parent Applications (1)

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CN 201210166344 Division CN102676751B (en) 2012-05-27 2012-05-27 Laser strengthening process of sliding plate

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CN103602789B true CN103602789B (en) 2015-01-07

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1182800A (en) * 1996-11-20 1998-05-27 山东矿业学院 Method of quick scan fusing hardening for surface of cast iron
CN101109032A (en) * 2007-08-17 2008-01-23 沈阳大陆激光成套设备有限公司 Technique of laser hardening ossifying process of vehicle mold
CN101775474A (en) * 2010-03-18 2010-07-14 唐山瑞兆激光技术机械修复有限公司 Method for strengthening metal sieve plate by laser broadband remelting

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3894306B2 (en) * 2002-07-23 2007-03-22 トヨタ自動車株式会社 Laser quenching method and apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1182800A (en) * 1996-11-20 1998-05-27 山东矿业学院 Method of quick scan fusing hardening for surface of cast iron
CN101109032A (en) * 2007-08-17 2008-01-23 沈阳大陆激光成套设备有限公司 Technique of laser hardening ossifying process of vehicle mold
CN101775474A (en) * 2010-03-18 2010-07-14 唐山瑞兆激光技术机械修复有限公司 Method for strengthening metal sieve plate by laser broadband remelting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2004-52074A 2004.02.19 *

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