CN103352105B - Laser strengthening process for slide plate - Google Patents
Laser strengthening process for slide plate Download PDFInfo
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- CN103352105B CN103352105B CN201310239014.4A CN201310239014A CN103352105B CN 103352105 B CN103352105 B CN 103352105B CN 201310239014 A CN201310239014 A CN 201310239014A CN 103352105 B CN103352105 B CN 103352105B
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- slide plate
- quenching
- laser
- reverse side
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Abstract
The invention relates to a laser strengthening process for a slide plate. The process comprises the steps of: A. treating the slide plate surface, and detecting the slide plate; B. coating the front and back sides of the slide plate with a laser light absorption coating; C. adjusting a tool according to a detection result, optimizing technological parameters, and fixing the slide plate on the tool; firstly carrying out laser quenching on each region of the back side discretely, with the back side quenching region area accounting for 1/3-2/5 of the total area of the slide plate back side; then the discretely quenching the front side of the slide plate; and D. performing detection. The laser strengthening process for a slide plate can conveniently correct the deformation of the slide plate. The overall deformation of a slide plate with thickness of less than 50mm is effectively controlled within 0.5mm, and the surface hardness of the slide plate is 52-56HRC, thus meeting use requirements.
Description
The application is divisional application, the application number of original application: 201210166344.0, and 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 plant 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 slide plate front to do quench treatment in technology establishment, to ensure the surface abrasion resistance of slide plate.Common quenching method topmost problem in to the quenching of slide plate is to produce large distortion, distortion because the input of heat makes slide plate.Make it plane and do not reach technical requirements and service requirements, directly scrap, and plate is thinner when serious, size more gross distortion is more severe.
Laser quenching application laser quenching technology, is the laser beam rapid heating steel material surface utilizing after focusing on, and it is undergone phase transition, and forms 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 control the deflection of slide plate, slide plate after laser quenching cannot be used, how laser quenching is applied to the strengthening of slide plate, especially how the slide plate that thickness is less than to 50mm carries out laser quenching makes it meet service requirements, is the problem that those skilled in the art need to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide one sled surface is carried out to laser quenching, 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. apply laser light absorption paint at slide plate tow sides;
C. adjust frock according to detected result, Optimizing Process Parameters, is fixed on slide plate in frock; First the reverse side of slide plate is divided into multiple uniform regions, discretely the regional of reverse side is carried out to laser quenching, the area summation of controlling reverse side quenching region accounts for 1/3 to 2/5 of the slide plate reverse side total area; Then quenched in the front of slide plate discretely, until slide plate front all completes quenching, slide plate reaches level requirements or reverse side projection; If slide plate reverse side projection after slide plate is cooling, is removed frock, to the correction of quenching of the position of slide plate reverse side projection, until deflection is controlled in 0.5mm;
Taking fast-transverse-flow CO2 laser as light source, slide plate is carried out to lap connection scanning; 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 further to improve the specific absorption of sled surface to laser, 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, the appropriate molybdenum-iron that adds can improve the hardness on quenching tail skid surface, and the coating of this composition has good flow, and it is convenient to apply, and coordinates above-mentioned laser-quenching technique method, can make the quenching effect of slide plate better.
For slide plate to be strengthened is successfully quenched, and obtain better quenching effect, a kind of preferred technical scheme is: above-mentioned steps A removes the dust on slide plate, greasy dirt, corrosion; 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; Slide plate be can't harm to dye-penetrant inspection.
In order better to deposit the slide plate after strengthening, a kind of preferred technical scheme is: after above-mentioned steps D, qualified slide plate is cleared up, 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 in the time carrying out laser quenching, first the reverse side of slide plate is divided into multiple uniform regions according to original deformation rule, discretely the regional of reverse side is carried out to laser quenching, 75% left and right that is positive total deformation by the reverse side deflection control of slide plate, the now front projection of slide plate, reverse side tensile stress is even; Then quenched in the front of slide plate discretely by rule, until slide plate front all completes quenching, now slide plate reaches level requirements or reverse side projection; As slide plate reverse side projection, after slide plate is cooling, remove frock, detect slide plate bulk deformation amount, then to corrections of again quenching of the position of slide plate reverse side projection, the limit correction limit measurement of quenching, until reach requirement.This technique is carried out after laser quenching in sled surface, can proofread and correct the deflection of slide plate easily, and the bulk deformation that thickness is less than the slide plate of 50mm is effectively controlled in 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. apply laser light absorption paint at slide plate tow sides.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. adjust frock according to detected result, Optimizing Process Parameters, is fixed on slide plate in frock.First the reverse side of slide plate is divided into multiple uniform regions according to original deformation rule, discretely the regional of reverse side is carried out to laser quenching, according to the expectation analysis to deformation, the area summation of controlling reverse side quenching region accounts for 2/5 of the slide plate reverse side total area, the now front projection of slide plate, reverse side tensile stress is even.Then quenched in 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 is cooling, remove frock, detect slide plate bulk deformation amount, to corrections of quenching of the position of slide plate reverse side projection, the limit correction limit measurement of quenching, until be controlled at deflection in 0.5mm;
Taking fast-transverse-flow CO2 laser as light source, slide plate is carried out to lap connection scanning; 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; Slide plate be can't harm to dye-penetrant inspection;
E. qualified slide plate is cleared up, 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 without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present invention extended out or variation 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. apply laser light absorption paint at slide plate tow sides;
C. adjust frock according to detected result, Optimizing Process Parameters, is fixed on slide plate in frock; First the reverse side of slide plate is divided into multiple uniform regions, discretely the regional of reverse side is carried out to laser quenching, the area summation of controlling reverse side quenching region accounts for 1/3 to 2/5 of the slide plate reverse side total area; Then quenched in the front of slide plate discretely, until slide plate front all completes quenching, slide plate reaches level requirements or reverse side projection; If slide plate reverse side projection after slide plate is cooling, is removed frock, to the correction of quenching of the position of slide plate reverse side projection, until deflection is controlled in 0.5mm;
Taking fast-transverse-flow CO2 laser as light source, slide plate is carried out to lap connection scanning; 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239014.4A CN103352105B (en) | 2012-05-27 | 2012-05-27 | Laser strengthening process for slide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310239014.4A CN103352105B (en) | 2012-05-27 | 2012-05-27 | Laser strengthening process for slide plate |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210166344 Division CN102676751B (en) | 2012-05-27 | 2012-05-27 | Laser strengthening process of sliding plate |
Publications (2)
| Publication Number | Publication Date |
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| CN103352105A CN103352105A (en) | 2013-10-16 |
| CN103352105B true CN103352105B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310239014.4A Expired - Fee Related CN103352105B (en) | 2012-05-27 | 2012-05-27 | Laser strengthening process for slide plate |
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| CN109458414A (en) | 2018-12-28 | 2019-03-12 | 上海理工大学 | A kind of vibration and noise reducing brake disc |
Citations (2)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02182928A (en) * | 1988-12-29 | 1990-07-17 | Kanai Hiroyuki | Traveler for spinning machine and production thereof |
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2012
- 2012-05-27 CN CN201310239014.4A patent/CN103352105B/en not_active Expired - Fee Related
Patent Citations (2)
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP平2-182928A 1990.07.17 |
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| CN103352105A (en) | 2013-10-16 |
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