CN104480255A - Manufacturing technology of novel moving blades of crusher - Google Patents
Manufacturing technology of novel moving blades of crusher Download PDFInfo
- Publication number
- CN104480255A CN104480255A CN201410819651.3A CN201410819651A CN104480255A CN 104480255 A CN104480255 A CN 104480255A CN 201410819651 A CN201410819651 A CN 201410819651A CN 104480255 A CN104480255 A CN 104480255A
- Authority
- CN
- China
- Prior art keywords
- moving knife
- laser
- new type
- manufacture craft
- crushing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title abstract description 13
- 238000010791 quenching Methods 0.000 claims abstract description 26
- 230000000171 quenching effect Effects 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000012809 cooling fluid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 9
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000004093 laser heating Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 244000309464 bull Species 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005542 laser surface treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
Abstract
The invention discloses a manufacturing technology of novel moving blades of a crusher. According to the technical scheme, the manufacturing technology is characterized by comprising steps as follows: cutting a profile into a plurality of moving blades along patterns, placing the moving blades on a machine tool for laser quenching, transferring the moving blades to a grinding machine for finish grinding, cooling the moving blades and the like. Surfaces of the moving blades can be heated and self-cooled at the high speed with the laser surface quenching technology, temperatures of the surfaces of the moving blades and heat penetration depths can be effectively controlled through control on the laser scanning speed and the laser power, and the heat affected zone is small and quenching stress and deformation are very small due to the high laser heating speed. The laser quenchingtechnology is short in period, the production efficiency is high, the technological process can be controlled by a computer easily, the automation degree is high, and the technology can be applied to a production line.
Description
[technical field]
The invention belongs to field of machining, relate to a kind of manufacture craft of new type crushing machine moving knife, especially a kind of laser surface hardening technique of new type crushing machine moving knife.
[background technology]
Since the sixties in 20th century, laser came out, laser technology, as a new and high technology highly visible, extensively obtains important application in every profession and trade.In recent years, laser surface treating technology not only develops rapidly in research and development, and also achieves significant progress in industrial application, becomes the emerging field that Surface Engineering one is very active.The microtexture that Laser Surface Treatment both can pass through laser quenching, surface melting changes matrix skin material, also can change Chemical Composition and the microtexture of matrix skin simultaneously by treatment processs such as laser melting coating, gaseous phase deposition and alloyings.Much less than the power density needed for other laser processing of laser surface hardening, are therefore utilizing laser technology to carry out in materials processing, and at most, it can significantly improve hardness and the rotproofness of metallic surface in laser surface hardening application.But the application of laser surface hardening technology is extensive like that and ripe not as good as prior heat treatment technology at present, but due to its advantage had, be just day by day subject to people's attention.Be applied in many fields such as machinofacture, communications and transportation, oil, mine, weaving, metallurgy, aerospace and develop.
Laser quenching technology is not also really applied on the moving knife of crusher at present, existing crusher moving knife heat-treating methods normally carries out entirety or local big area heating to moving knife or adopts high-frequency quenching process, its heat-up time is longer, moving knife easily deforms, some producers also useful focussed laser spot are irradiated on moving knife surface or cutting edge, so very easily cause melting phenomenon, cause moving knife normally to use.
[summary of the invention]
The present invention seeks to overcome the deficiencies in the prior art, provide a kind of laser-quenching technique method of crusher moving knife surface, the method can make moving knife surface local hardening form zigzag cutting edge.
The present invention is achieved by the following technical solutions:
A manufacture craft for new type crushing machine moving knife, is characterized in that comprising the steps:
A1, the section bar being painted with crusher moving knife pattern is become multiple moving knife along pattern-cut;
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser apparatus and be connected with computer;
A3, removing laser failure are reported to the police;
A4, call the work program write, by setting for machine to processing zero position, the distance of laser head and moving knife upper surface is set;
A5, according to program setting, laser pulse is applied to moving knife upper surface by laser apparatus and carry out scanning quenching and form a kind of zone of oxidation of high rigidity;
A6, after moving knife upper surface is scanned, moving knife is transferred on water mill bed to scanning formed zone of oxidation refine;
A7, according to A6 step, the another side of moving knife is successively quenched and refined;
A8, to fine grinding after moving knife cool.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: described cooling step is naturally cooling.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: the cooling fluid of cooling is liquid nitrogen, and the pressure of liquid nitrogen is 0.02Pa.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: described laser scans at described moving knife surface periphery, the quenched zone 2 that after quenching, formation soft or hard replaces and Pu Zhi district 3.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: the power of the laser pulse in described A5 step is 1500W.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: the hot spot of the laser in described A5 step is the square of the length of side 3 millimeters.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: described section bar is NM550 steel plate.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: in described A4 step, the distance of laser head and moving knife upper surface is 330 millimeters.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: in described A5 step, laser scanning speed is 950 mm/min.
The manufacture craft of new type crushing machine moving knife described above, is characterized in that: refine the amount of feed 0.1 ~ 0.3 millimeter in described A6 step.
Compared with prior art, the present invention has the following advantages:
1, laser surface hardening technique of the present invention heated at high speed can be carried out in moving knife surface and high speed self cooling, by controlling sweep velocity and the laser power of laser, can effectively control the temperature on moving knife surface and thermal penetration depth, because LASER HEATING speed is fast, thus heat affected zone is little, quenching stress and be out of shape minimum.
2, can obtain superfine martensitic crystal grains after laser surface hardening of the present invention, hardness improves 15%-20% than the hardness after conventional quenching, and case depth can reach 2mm, and workpiece heart portion still keeps original structure.Workpiece surface layer hardness through laser surface hardening process is high, wear resistance is good, centre hardness is low, good toughness, fatigue strength generally can improve 30% ~ 50%, because heat dissipation metal is fast, after laser beam flying, scanning area can rapid Cooling Quenching voluntarily, without the need to hardening liquid, is a kind of heat treating method of sanitation and hygiene.
3, laser surface hardening technique of the present invention and can not be able to use the part of other ordinary method process to carry out local hardening process to complex-shaped part.Meanwhile, also different Laser hardenings can be carried out at the different sites of Same Part as required.
4, laser hardening process cycle of the present invention is short, and production efficiency is high, and technological process easily realizes computer control, and level of automation is high, can include production line in.
5, laser hardening of the present invention is self cooling by heat conduction from outward appearance to inner essence, can not need heat-eliminating medium, environmentally safe.
[accompanying drawing explanation]
Fig. 1 is the steel plain figure that the present invention is painted with moving knife pattern;
Fig. 2 is that this crusher moving knife of the present invention is by the stereographic map after laser-quenching technique local hardening;
Fig. 3 be crusher moving knife of the present invention by the orthographic plan after laser-quenching technique local hardening, wherein thick line representative by the region of quenching;
Fig. 4 is the enlarged view at B place in Fig. 3.
[embodiment]
Below in conjunction with accompanying drawing, the invention will be further described:
A manufacture craft for new type crushing machine moving knife, comprises the steps:
A1, the section bar being painted with crusher moving knife pattern is become multiple moving knife along pattern-cut;
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser apparatus and be connected with computer;
A3, removing laser failure are reported to the police;
A4, call the work program write, by setting for machine to processing zero position, the distance of laser head and moving knife upper surface is set;
A5, according to program setting, laser pulse is applied to moving knife upper surface by laser apparatus and carry out scanning quenching and form a kind of zone of oxidation of high rigidity;
A6, after moving knife upper surface is scanned, moving knife is transferred on water mill bed to scanning formed zone of oxidation refine;
A7, according to A6 step, the another side of moving knife is successively quenched and refined;
A8, to fine grinding after moving knife cool, cooled moving knife as shown in Figures 2 and 3, Fig. 4 is the enlarged view at B place in Fig. 3, and 1 in Fig. 4 represents the part because not being worn by quenching on moving knife, and in Fig. 3, quenched zone 2 is by the region of quenching, represent with thick line, its hardness is far longer than not by the region of quenching, and around quenched zone 2 is exactly Pu Zhi district 3, is not by the region of quenching, by laser in the scanning of moving knife surface periphery, the quenched zone 2 that quenching rear just formation soft or hard replaces and Pu Zhi district 3.After being worn in not by hardened area working process, remaining by the region of quenching because hardness height is not worn, can continue to use, thus substantially increase the work-ing life of this moving knife.
This laser surface hardening technique can without cooling fluid, allows moving knife naturally cooling, and also can apply cooled with liquid nitrogen liquid, the pressure of liquid nitrogen is 0.02Pa.Utilize liquid nitrogen to carry out very low temperature cooling, laser quenching rear surface can be made to organize all to pass on and turn to martensite, the distortion in gated sweep face effectively, ensure the precision of scanning, thus improve surface microhardness and wear resisting property.
Then cool with liquid nitrogen, the chance of such minimizing LASER HEAT distortion, improves bull gear surface accuracy, simultaneously under the Quench of liquid nitrogen, bull gear surface can be made to obtain martensite completely, solve distortion and the unwarrantable problem of precision of normative heat treatment bull gear.Improve its work-ing life, there is very important engineer applied and be worth.
The power of the laser pulse in described A5 step is 1500W.
The hot spot of the laser in described A5 step is the square of the length of side 3 millimeters.
Described section bar is NM550 steel plate.
In described A4 step, the distance of laser head and moving knife upper surface is 330 millimeters.
In described A5 step, laser scanning speed is 950 mm/min.
The amount of feed 0.1 ~ 0.3 millimeter is refined in described A6 step.
Laser surface selective hardening is very little to moving knife surface roughness affect, controls the distortion on moving knife surface, ensure that its precision, substantially increases the wear resisting property of moving knife.
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not inventive concept and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various modification that in this area, engineering technical personnel make technical scheme of the present invention and improvement, all should fall into protection scope of the present invention.
Claims (10)
1. a manufacture craft for new type crushing machine moving knife, is characterized in that comprising the steps:
A1, the section bar being painted with crusher moving knife pattern is become multiple moving knife along pattern-cut;
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser apparatus and be connected with computer;
A3, removing laser failure are reported to the police;
A4, call the work program write, by setting for machine to processing zero position, the distance of laser head and moving knife upper surface is set;
A5, according to program setting, laser pulse is applied to moving knife upper surface by laser apparatus and carry out scanning quenching and form a kind of zone of oxidation of high rigidity;
A6, after moving knife upper surface is scanned, moving knife is transferred on water mill bed to scanning formed zone of oxidation refine;
A7, according to A6 step, the another side of moving knife is successively quenched and refined;
A8, to fine grinding after moving knife cool.
2. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: described cooling step is naturally cooling.
3. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: the cooling fluid of cooling is liquid nitrogen, and the pressure of liquid nitrogen is 0.02Pa.
4. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: described laser scans at described moving knife surface periphery, forms quenched zone (2) and Pu Zhiqu (3) that soft or hard replaces after quenching.
5. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: the power of the laser pulse in described A5 step is 1500W.
6. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: the hot spot of the laser in described A5 step is the square of the length of side 3 millimeters.
7. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: described section bar is NM550 steel plate.
8. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: in described A4 step, the distance of laser head and moving knife upper surface is 330 millimeters.
9. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: in described A5 step, laser scanning speed is 950 mm/min.
10. the manufacture craft of new type crushing machine moving knife according to claim 1, is characterized in that: refine the amount of feed 0.1 ~ 0.3 millimeter in described A6 step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819651.3A CN104480255B (en) | 2014-12-22 | 2014-12-22 | A kind of manufacture craft of disintegrating machine moving knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819651.3A CN104480255B (en) | 2014-12-22 | 2014-12-22 | A kind of manufacture craft of disintegrating machine moving knife |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104480255A true CN104480255A (en) | 2015-04-01 |
| CN104480255B CN104480255B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819651.3A Active CN104480255B (en) | 2014-12-22 | 2014-12-22 | A kind of manufacture craft of disintegrating machine moving knife |
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| Country | Link |
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| CN (1) | CN104480255B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184421A (en) * | 2019-04-03 | 2019-08-30 | 中钢集团邢台机械轧辊有限公司 | A kind of intensifying method improving machine tool fixing top tip hardness and wearability |
| CN110373531A (en) * | 2018-04-13 | 2019-10-25 | 杭州巨星科技股份有限公司 | The processing method of cutting edge, the component with cutting edge and the tool with cutting edge |
| CN115351520A (en) * | 2022-08-23 | 2022-11-18 | 山东黑旋风锯业有限公司 | Slicing knife and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1118377A (en) * | 1995-06-22 | 1996-03-13 | 华南理工大学 | Reproduction of diamond saw disc body |
| CN1298786A (en) * | 2001-01-08 | 2001-06-13 | 广州市光通技术有限公司 | Laser treating method for parts with engaged surface and saw blade |
| CN1580296A (en) * | 2004-05-14 | 2005-02-16 | 中国第一汽车集团公司 | Laser quenching hardening treatment method for cutter and die cutting edge |
| CN1603425A (en) * | 2003-09-29 | 2005-04-06 | 浙江工业大学 | Metal laser deep-layer quenching process |
| WO2010063161A1 (en) * | 2008-12-01 | 2010-06-10 | Sun Chunyu | Cutter wheel for cutting fragile material and manufacturing method thereof |
| CN102000884A (en) * | 2010-11-18 | 2011-04-06 | 湖南泰嘉新材料科技股份有限公司 | Making method for sawteeth of dual metal saw |
| US20110097162A1 (en) * | 2009-10-23 | 2011-04-28 | Kennametal Inc. | Three-Dimensional Surface Shaping of Rotary Cutting Tool Edges with Lasers |
| CN103537762A (en) * | 2013-11-11 | 2014-01-29 | 唐山冶金锯片有限公司 | Manufacturing method of hard alloy tooth circular saw blade |
-
2014
- 2014-12-22 CN CN201410819651.3A patent/CN104480255B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118377A (en) * | 1995-06-22 | 1996-03-13 | 华南理工大学 | Reproduction of diamond saw disc body |
| CN1298786A (en) * | 2001-01-08 | 2001-06-13 | 广州市光通技术有限公司 | Laser treating method for parts with engaged surface and saw blade |
| CN1603425A (en) * | 2003-09-29 | 2005-04-06 | 浙江工业大学 | Metal laser deep-layer quenching process |
| CN1580296A (en) * | 2004-05-14 | 2005-02-16 | 中国第一汽车集团公司 | Laser quenching hardening treatment method for cutter and die cutting edge |
| WO2010063161A1 (en) * | 2008-12-01 | 2010-06-10 | Sun Chunyu | Cutter wheel for cutting fragile material and manufacturing method thereof |
| US20110097162A1 (en) * | 2009-10-23 | 2011-04-28 | Kennametal Inc. | Three-Dimensional Surface Shaping of Rotary Cutting Tool Edges with Lasers |
| CN102000884A (en) * | 2010-11-18 | 2011-04-06 | 湖南泰嘉新材料科技股份有限公司 | Making method for sawteeth of dual metal saw |
| CN103537762A (en) * | 2013-11-11 | 2014-01-29 | 唐山冶金锯片有限公司 | Manufacturing method of hard alloy tooth circular saw blade |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373531A (en) * | 2018-04-13 | 2019-10-25 | 杭州巨星科技股份有限公司 | The processing method of cutting edge, the component with cutting edge and the tool with cutting edge |
| CN110184421A (en) * | 2019-04-03 | 2019-08-30 | 中钢集团邢台机械轧辊有限公司 | A kind of intensifying method improving machine tool fixing top tip hardness and wearability |
| CN115351520A (en) * | 2022-08-23 | 2022-11-18 | 山东黑旋风锯业有限公司 | Slicing knife and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104480255B (en) | 2017-04-05 |
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Address after: 528400 one of No.01 Daxin Road, South District, Zhongshan City, Guangdong Province Patentee after: OMS MACHINERY Co.,Ltd. Country or region after: China Address before: 528400 one of No.01 Daxin Road, South District, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN OMS INDUSTRIAL Co.,Ltd. Country or region before: China |