CN1298786A - Laser treating method for parts with engaged surface and saw blade - Google Patents
Laser treating method for parts with engaged surface and saw blade Download PDFInfo
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- CN1298786A CN1298786A CN 01107416 CN01107416A CN1298786A CN 1298786 A CN1298786 A CN 1298786A CN 01107416 CN01107416 CN 01107416 CN 01107416 A CN01107416 A CN 01107416A CN 1298786 A CN1298786 A CN 1298786A
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Abstract
The present invention relates to a laser treatment of spare parts with engaged surface and the saw blade. It can proceed laser surface quanching for large and medicum size gear shaft surface and hot saw blade, it can also proceed surface quanching for worm, splined shaft etc spare parts with engagement surface. Avantages: improved hardness of workpiece, good wear resistance, long service life, reducing cost, etc..
Description
The present invention has the parts of the field of conjugate action and the modification processing method of saw blade.The innovative technology that belongs to material surface treatment method.
The current material surface treatment method adopts heat treatment methods such as conventional flame surface quenching, medium-high frequency surface hardening, carburizing mostly, the shortcoming that these methods exist is dumb, its range of application is restricted, particularly large-scale workpiece and complex appearance workpiece are difficult to carry out surface Hardening Treatment more, flank of tooth cure process as big-and-middle-sized gear shaft is a difficult problem of machinery manufacturing industry always, adopt flame surface quenching, operating difficulties, quality also is difficult to guarantee; Adopt the intermediate frequency surface hardening, the heavier pitch circle flank of tooth of loading is difficult to harden.To big-and-middle-sized hot saw sheet, general factory only dispatches from the factory with modified heat treatment, and hardness is generally HRC31～35, and such hardness is obviously on the low side to the working position of saw blade, but is difficult to solve with conventional heat treatment.For this reason, manufacturing enterprise urgently wishes to solve this class problem, improves its hardness, prolongs the service life of workpiece, reduces consumption costs.
The objective of the invention is to overcome above-mentioned shortcoming and a kind of case hardness that can effectively improve material is provided, and flexible operation, the parts with field of conjugate action of applied range and the laser processing method of saw blade.
Laser processing method of the present invention is with laser beam molten the coagulating of the field of conjugate action of workpiece to be quenched, and it carries out as follows:
(1) surface of pending material is cleared up, removed greasy dirt and iron rust, be coated with extinction coating;
(2) laser beam scans the flank of tooth of workpiece fast, makes the flank of tooth of workpiece be warmed up to temperature T at a terrific speed, and temperature T is the molten point of metal;
(3) laser beam is left being heated of workpiece and distinguish the surface, make workpiece carry out self-quench hardening because of the heat conduction of itself;
(4) carry out removing surface.
Describe concrete condition of the present invention in detail below in conjunction with embodiment:
Fig. 1 is the scanning sequency figure of the embodiment of the invention 1;
Fig. 2 is the laser treatment zone figure of the embodiment of the invention 1;
Fig. 3 is the laser scanning figure of the embodiment of the invention 2.
Embodiment one:
The present invention quenches to molten the coagulating of the flank of tooth of the parts with field of conjugate action, and it carries out as follows
(1) surface of pending material is cleared up, removed greasy dirt and iron rust, be coated with extinction coating;
(2) laser beam scans the flank of tooth of workpiece fast, makes the flank of tooth of workpiece be warmed up to temperature T at a terrific speed, and temperature T is the molten point of metal;
(3) laser beam is left being heated of workpiece and distinguish the surface, make workpiece carry out self-quench hardening because of the heat conduction of itself;
(4) carry out removing surface.
Programming rate in the above-mentioned steps (2) is 10
5～10
6℃/S step (3) in the cooling velocity of self-quench hardening be 10
5℃/S.Wherein the power output P of laser beam is 1500～1800W, and spot size D is 5～8mm, and scan velocity V is 1.3～1.7m/min, and amount of lap is 0.8～1.2mm.
Above-mentioned laser beam flying has the flank of tooth of the parts of the field of conjugate action, and scanning times determines that according to face width of tooth the amount of lap between hot spot is 0.8～1.2mm.Fig. 1 is the scanning sequency figure to gear, the modulus of gear is 16, the number of teeth is 22, spiral angle of graduated circle is 26 ° 50 ' 5 ", it has scanned 5 times altogether, the sequential scanning by 1～5; the power output P of laser beam is 1600w; spot size D is 6mm, and scan velocity V is 1.5m/min, and the amount of lap between hot spot is 1mm.
The present invention is owing to adopt Fast Heating and the processing method of quick cooling, and therefore, the sclerotic tissue that surface of the work is obtained is thin, hardness is brought up to HRc55～60 by HB300～320 before handling.
Embodiment two:
The present invention is the surface melting quenching to the manganese steel saw blade, and it carries out as follows:
(1) surface of pending material is cleared up, removed greasy dirt and iron rust, be coated with extinction coating;
(2) laser beam scans the flank of tooth of workpiece fast, makes the flank of tooth of workpiece be warmed up to temperature T at a terrific speed, and temperature T is the molten point of metal;
(3) laser beam is left being heated of workpiece and distinguish the surface, make workpiece carry out self-quench hardening because of the heat conduction of itself;
(4) carry out removing surface.
The tissue in laser action district includes fusion zone, top layer, sublevel solid-state phase changes district, internal layer filtering area three floor in the above-mentioned steps (2).The power output P of laser beam is 1900～2100W, and spot size D is 5～8mm, and scan velocity V is 0.8～1.2m/min.
The both sides of above-mentioned laser beam flying blade teeth, the edge of laser beam and tooth top are at a distance of 0.8～1.2mm.Fig. 3 is the laser scanning figure to saw blade, the diameter of saw blade is Φ 1500mm, thickness is 7mm, for preventing the top basil scorification of laser beam with blade teeth, the edge and the tooth top of laser beam are scanned at a distance of the 1mm place, the power output of laser beam is 2000W, and spot width is 8mm, and scan velocity V is 1m/min.The case hardness of saw blade matrix before laser treatment is HRC31～35, and the hardness after the processing is HRC49.
The present invention is extremely melted material surface with laser beam heats owing to adopting merely, making consolidation layer and material matrix is the processing method of natural metallurgical binding, therefore, surface of the work is in the consolidation process, not only can get rid of its impurity and gas, and its chilling recrystallization can obtain the comparatively tissue of refinement homogeneous and higher hardness, and its wearability and corrosion resistance are all better; In addition, because its crucible zone is thin, the heat effect district is little, and less to the roughness and the workpiece size influence of surface of the work, ordinary circumstance can not need be carried out follow-up polishing and directly used.
In sum, the present invention is applied range not only, use flexibly, can realize the flank of tooth and the hot saw sheet of big-and-middle-sized gear shaft are carried out laser surface hardening, but also can be to worm screw, splined shafts etc. have the surface hardening of parts and other saw blade of the field of conjugate action, workpiece hardness is improved, wearability is good, long service life, this method can improve the service life of plant equipment and accessory thereof, reduces the consumption costs of accessory, thereby the production cost of enterprise is reduced greatly, the present invention is that a kind of technology is reasonable, easy to use, its social benefit and economic benefit are all than significant a kind of the have parts of the field of conjugate action and the laser processing method of saw blade.
Claims (7)
1, have the parts of the field of conjugate action and the laser processing method of saw blade, it is characterized in that with laser beam molten the coagulating of the flank of tooth of workpiece being quenched, it carries out as follows
(1) surface of pending material is cleared up, removed greasy dirt and iron rust, be coated with extinction coating;
(2) laser beam scans the flank of tooth of workpiece fast, makes the flank of tooth of workpiece be warmed up to temperature T at a terrific speed, and temperature T is the molten point of metal;
(3) laser beam is left being heated of workpiece and distinguish the surface, make workpiece carry out self-quench hardening because of the heat conduction of itself;
(4) carry out removing surface.
2, according to claim 1 have the parts of the field of conjugate action and a laser processing method of saw blade, it is characterized in that the programming rate in the above-mentioned steps (2) is 10
5～10
6℃/S.
3, according to claim 1 have the parts of the field of conjugate action and a laser processing method of saw blade, it is characterized in that the cooling velocity of self-quench hardening in the above-mentioned steps (3) is 10
5℃/S.
4, according to claim 1 have the parts of the field of conjugate action and a laser processing method of saw blade, it is characterized in that the tissue in laser action district in the above-mentioned steps (2), includes fusion zone, top layer, sublevel solid-state phase changes district, internal layer transition region three floor.
5, describedly have the parts of the field of conjugate action and a laser processing method of saw blade according to claim 1 or 2 or 3 or 4, it is characterized in that power output P, spot size D and the scan velocity V of above-mentioned laser beam is:
(1) to having the parts of the field of conjugate action, P gets 1500～1800W, and D gets Φ 5～Φ 8mm, and V gets 1.3～1.7m/min;
(2) to saw blade, P gets 1900～2100W, and D gets Φ 5～Φ 8mm, and V gets 0.8～1.2m/min;
6, according to claim 5 have the parts of the field of conjugate action and a laser processing method of saw blade, it is characterized in that above-mentioned laser beam flying has the flank of tooth of the parts of the field of conjugate action, scanning times determines that according to face width of tooth the amount of lap between hot spot is 0.8～1.2mm.
7, according to claim 5 have the parts of the field of conjugate action and a laser processing method of saw blade, it is characterized in that the both sides of above-mentioned laser beam flying according to the sheet tooth, and the edge of laser beam and tooth top are at a distance of 0.8～1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107416 CN1105615C (en) | 2001-01-08 | 2001-01-08 | Laser treating method for parts with engaged surface and saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107416 CN1105615C (en) | 2001-01-08 | 2001-01-08 | Laser treating method for parts with engaged surface and saw blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1298786A true CN1298786A (en) | 2001-06-13 |
| CN1105615C CN1105615C (en) | 2003-04-16 |
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ID=4656344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107416 Expired - Fee Related CN1105615C (en) | 2001-01-08 | 2001-01-08 | Laser treating method for parts with engaged surface and saw blade |
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| CN (1) | CN1105615C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368226B (en) * | 2007-08-17 | 2011-05-11 | 中国第一汽车集团公司 | Tooth ring tooth surface laser induration processing method |
| CN102808077A (en) * | 2012-09-16 | 2012-12-05 | 江麓机电集团有限公司 | Thin-wall gear ring type part quenching method for keeping accuracy level |
| CN104480255A (en) * | 2014-12-22 | 2015-04-01 | 中山市奥美森工业有限公司 | Manufacturing technology of novel moving blades of crusher |
| CN104531958A (en) * | 2014-11-12 | 2015-04-22 | 上海海隆石油钻具有限公司 | A screw thread surface laser processing method |
| CN106967868A (en) * | 2017-05-24 | 2017-07-21 | 昆山鑫昌泰模具科技有限公司 | The laser-quenching technique of Press Tools for Automobiles characteristic curve |
| CN107502707A (en) * | 2017-09-13 | 2017-12-22 | 徐州万达回转支承有限公司 | A kind of laser-quenching method of worm gear pair |
| CN108411070A (en) * | 2018-04-19 | 2018-08-17 | 杭州盛镭激光科技有限公司 | The method that laser surface hardening based on gear forming method avoids tempering band |
-
2001
- 2001-01-08 CN CN 01107416 patent/CN1105615C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368226B (en) * | 2007-08-17 | 2011-05-11 | 中国第一汽车集团公司 | Tooth ring tooth surface laser induration processing method |
| CN102808077A (en) * | 2012-09-16 | 2012-12-05 | 江麓机电集团有限公司 | Thin-wall gear ring type part quenching method for keeping accuracy level |
| CN104531958A (en) * | 2014-11-12 | 2015-04-22 | 上海海隆石油钻具有限公司 | A screw thread surface laser processing method |
| CN104480255A (en) * | 2014-12-22 | 2015-04-01 | 中山市奥美森工业有限公司 | Manufacturing technology of novel moving blades of crusher |
| CN104480255B (en) * | 2014-12-22 | 2017-04-05 | 中山市奥美森工业有限公司 | A kind of manufacture craft of disintegrating machine moving knife |
| CN106967868A (en) * | 2017-05-24 | 2017-07-21 | 昆山鑫昌泰模具科技有限公司 | The laser-quenching technique of Press Tools for Automobiles characteristic curve |
| CN107502707A (en) * | 2017-09-13 | 2017-12-22 | 徐州万达回转支承有限公司 | A kind of laser-quenching method of worm gear pair |
| CN108411070A (en) * | 2018-04-19 | 2018-08-17 | 杭州盛镭激光科技有限公司 | The method that laser surface hardening based on gear forming method avoids tempering band |
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| Publication number | Publication date |
|---|---|
| CN1105615C (en) | 2003-04-16 |
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Granted publication date: 20030416 Termination date: 20120108 |