CN104480255B - A kind of manufacture craft of disintegrating machine moving knife - Google Patents
A kind of manufacture craft of disintegrating machine moving knife Download PDFInfo
- Publication number
- CN104480255B CN104480255B CN201410819651.3A CN201410819651A CN104480255B CN 104480255 B CN104480255 B CN 104480255B CN 201410819651 A CN201410819651 A CN 201410819651A CN 104480255 B CN104480255 B CN 104480255B
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- moving knife
- laser
- disintegrating machine
- manufacture craft
- steps
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000010791 quenching Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000000171 quenching effect Effects 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 9
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000004093 laser heating Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 244000309464 bull Species 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method 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
- 238000011161 development Methods 0.000 description 1
- 238000010304 firing 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
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance 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 kind of manufacture craft of new type crushing machine moving knife, the main points of its technical scheme are to comprise the following steps：By section bar along pattern-cut into multiple moving knife, moving knife is positioned over lathe by laser quenching, and moving knife is transferred to grinding machine fine grinding, cooling etc..Laser surface hardening technique of the present invention moving knife surface can be carried out heated at high speed and high speed is self cooling, by the sweep speed and laser power that control laser, effectively the temperature and thermal penetration depth on moving knife surface can be controlled, due to LASER HEATING speed it is fast, thus heat affected area is little, quenching stress and deformation are minimum.Laser hardening process cycle of the present invention is short, and production efficiency is high, and technical process easily realizes computer controls, and high degree of automation can include production line.
Description
【Technical field】
The invention belongs to field of machining, is related to a kind of manufacture craft of disintegrating machine moving knife, especially a kind of disintegrating machine
The laser surface hardening technique of moving knife.
【Background technology】
Since the laser appearance sixties in 20th century, laser technology extensively exists as a new and high technology highly visible
Every profession and trade obtains important application.In recent years, laser surface treating technology is not only developed rapidly in terms of research and development, and
And significant progress is also achieved in terms of commercial Application, become one very active emerging field of Surface Engineering.Laser table
Face processes and can both pass through laser quenching, the microstructure of surface melting change matrix skin material, it is also possible to molten by laser
Cover, the processing method such as gaseous phase deposition and alloying is while change the chemical analysis and microstructure of matrix skin.Laser surface is quenched
Little many of fire power densities more required than other Laser Processings, therefore carried out in materials processing using laser technology, laser table
Face quenching application is most, and it can significantly improve the hardness and rotproofness of metal surface.But current laser surface hardening technology
Using like that extensively and ripe not as good as prior heat treatment technology, but the advantage having due to which, just it is being increasingly subject to people
Attention.Answered in many fields such as machine-building, communications and transportation, oil, mine, weaving, metallurgy, Aero-Space
With and development.
Laser quenching technology there is presently no, existing disintegrating machine moving knife heat treatment
Method typically carries out entirety or the heating of local large area or using high-frequency quenching process to moving knife, and its heat time is longer, moves
Knife is susceptible to deformation, and also useful focussed laser spot is irradiated on moving knife surface or cutting edge for some producers, is so easily caused
Melting phenomenon, causes moving knife normally cannot use.
【The content of the invention】
The present invention seeks to overcome the deficiencies in the prior art, there is provided a kind of laser-quenching technique on disintegrating machine moving knife surface
Method, the method can make moving knife surface differential hardening form zigzag cutting edge.
The present invention is achieved by the following technical solutions：
A kind of manufacture craft of disintegrating machine moving knife, it is characterised in that comprise the steps：
A1, the section bar of disintegrating machine moving knife pattern will be painted with along pattern-cut into multiple moving knife；
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser instrument and be connected with computer；
A3, removing laser failure are reported to the police；
A4, the procedure write is called, by setting for machine to dead-center position is processed, laser head and moving knife upper table are set
The distance in face；
A5, to moving knife upper surface apply laser pulse according to program setting by laser instrument and be scanned quenching to form a kind of
The oxide layer of high rigidity；
A6, after moving knife upper surface is scanned, by moving knife be transferred on water mill bed to scanning formed oxide layer carry out
Fine grinding；
A7, the another side of moving knife is successively quenched and refined according to A6 steps；
A8, the moving knife after fine grinding is cooled down.
The laser is scanned in the moving knife surface periphery, and the alternate quenched zone 2 of soft or hard and Pu Zhi areas 3 are formed after quenching,
The quenched zone 2 is formed from many line and curve connections that harden to moving knife center direction protrusion, and the lines that harden are by 3 points of Pu Zhi areas
Pu Zhi areas 3 and 3 two parts of Pu Zhi areas by inner edge side by outer edge side are divided into, the Pu Zhi areas 3 of a portion outer edge side are located at
By the region of the close moving knife outer edge side of lines separation of hardening, quench after the Pu Zhi areas 3 by outer edge side not being quenched are worn
Internal inner edge side Pu Zhi areas 3 are wrapped to form multiple sawtooth and are continuing with by rigid line bar.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：The cooling step is natural cooling.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：The coolant of cooling is liquid nitrogen, the pressure of liquid nitrogen
Power is 0.02Pa.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：The power of the laser pulse in the A5 steps
For 1500W.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：The hot spot of the laser in the A5 steps is side
Long 3 millimeters square.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：The section bar is NM550 steel plates.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：Laser head and moving knife upper table in the A4 steps
The distance in face is 330 millimeters.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：In the A5 steps, laser scanning speed is 950
Mm/min.
The manufacture craft of disintegrating machine moving knife as described above, it is characterised in that：Refine in the A6 steps amount of feeding 0.1～
0.3 millimeter.
Compared with prior art, the present invention has the following advantages：
1st, moving knife surface can be carried out heated at high speed by laser surface hardening technique of the present invention and high speed is self cooling, be swashed by control
The sweep speed and laser power of light, effectively can be controlled to the temperature and thermal penetration depth on moving knife surface, due to laser
Firing rate is fast, thus heat affected area is little, and quenching stress and deformation are minimum.
2nd, superfine martensitic crystal grains can be obtained after laser surface hardening of the present invention, hardness is than the hardness after conventional quenching
15%-20% is improved, case depth is up to 2mm, and workpiece center portion still keeps original structure.Through laser surface hardening process
Surface of the work layer hardness it is high, wearability is good, and centre hardness is low, good toughness, and fatigue strength can typically improve 30%～50%, by
It is fast in heat dissipation metal, after laser beam flying, scanning area can voluntarily rapid Cooling Quenching, without the need for quenching liquid, be that a kind of cleaning is defended
Raw heat treatment method.
3rd, laser surface hardening technique of the present invention can be to complex-shaped part and can not be using at other conventional methods
The part of reason carries out differential hardening process.It is also possible to carry out different swashing in the different parts of Same Part as needed
Photo-hardening process.
4th, laser hardening process cycle of the present invention is short, and production efficiency is high, and technical process easily realizes computer controls, automates
Degree is high, can include production line.
5th, laser hardening of the present invention by heat conduction from outward appearance to inner essence it is self cooling, it may not be necessary to cooling medium, to environment without
Pollution.
【Description of the drawings】
Fig. 1 is the steel plain figure that the present invention is painted with moving knife pattern；
Fig. 2 is the disintegrating machine moving knife of the invention by the stereogram after laser-quenching technique differential hardening；
Fig. 3 be disintegrating machine moving knife of the present invention by the plan after laser-quenching technique differential hardening, wherein thick line represents quilt
The region of quenching；
Fig. 4 is the enlarged drawing in Fig. 3 at B.
【Specific embodiment】
The invention will be further described below in conjunction with the accompanying drawings：
A kind of manufacture craft of disintegrating machine moving knife, comprises the steps：
A1, the section bar of disintegrating machine moving knife pattern will be painted with along pattern-cut into multiple moving knife；
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser instrument and be connected with computer；
A3, removing laser failure are reported to the police；
A4, the procedure write is called, by setting for machine to dead-center position is processed, laser head and moving knife upper table are set
The distance in face；
A5, to moving knife upper surface apply laser pulse according to program setting by laser instrument and be scanned quenching to form a kind of
The oxide layer of high rigidity；
A6, after moving knife upper surface is scanned, by moving knife be transferred on water mill bed to scanning formed oxide layer carry out
Fine grinding；
A7, the another side of moving knife is successively quenched and refined according to A6 steps；
A8, the moving knife after fine grinding is cooled down.
The laser is scanned in the moving knife surface periphery, and the alternate quenched zone 2 of soft or hard and Pu Zhi areas 3 are formed after quenching,
The quenched zone 2 is formed from many line and curve connections that harden to moving knife center direction protrusion, and the lines that harden are by 3 points of Pu Zhi areas
Pu Zhi areas 3 and 3 two parts of Pu Zhi areas by inner edge side by outer edge side are divided into, the Pu Zhi areas 3 of a portion outer edge side are located at
By the region of the close moving knife outer edge side of lines separation of hardening, quench after the Pu Zhi areas 3 by outer edge side not being quenched are worn
Internal inner edge side Pu Zhi areas 3 are wrapped to form multiple sawtooth and are continuing with by rigid line bar.
As shown in Figures 2 and 3, Fig. 4 is the enlarged drawing in Fig. 3 at B to moving knife after cooling, 1 in Fig. 4 represent on moving knife because
The part for not being quenched and being worn, in Fig. 4, quenched zone 2 is the region being quenched, and is represented with thick line, and its hardness is far longer than not
The region being quenched, around quenched zone 2 is exactly Pu Zhi areas 3, the region not as being quenched, by laser outside moving knife surface
Edge is scanned, and the alternate quenched zone 2 of soft or hard and Pu Zhi areas 3 are just formed after quenching.It is worn during regional work is not quenched
Afterwards, it is left the region being quenched because hardness height is not worn, can be continuing with, so as to substantially increase the use of the moving knife
Life-span.
The laser surface hardening technique can allow moving knife natural cooling without coolant, it is also possible to apply liquid nitrogen coolant,
The pressure of liquid nitrogen is 0.02Pa.Ultralow temperature cooling is carried out using liquid nitrogen, surface texture is all pass on and turned to after can making laser quenching
Martensite, efficiently controls the deformation of scanning plane, it is ensured that the precision of scanning, so as to improve surface microhardness and anti-wear performance.
Then cooled down with liquid nitrogen, so reduce the chance of laser thermal deformation, improve bull gear surface accuracy, while
Under the Quench of liquid nitrogen, bull gear surface can be made to obtain completely martensite, solve the deformation of normative heat treatment bull gear
With the unwarrantable problem of precision.Its service life is improve, with critically important engineering application value.
The power of the laser pulse in the A5 steps is 1500W.
Square of the hot spot of the laser in the A5 steps for 3 millimeters of the length of side.
The section bar is NM550 steel plates.
In the A4 steps, laser head and the distance of moving knife upper surface are 330 millimeters.
In the A5 steps, laser scanning speed is 950 mm/mins.
0.1～0.3 millimeter of the amount of feeding is refined in the A6 steps.
Laser surface selective hardening controls the deformation on moving knife surface to moving knife surface roughness affect very little, it is ensured that
Its precision, substantially increases the anti-wear performance of moving knife.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to invention structure
Think and scope is defined, on the premise of without departing from design philosophy of the present invention, engineers and technicians are to the present invention in this area
The various modifications made of technical scheme and improvement, protection scope of the present invention all should be fallen into.
Claims (9)
1. a kind of manufacture craft of disintegrating machine moving knife, it is characterised in that comprise the steps：
A1, the section bar of disintegrating machine moving knife pattern will be painted with along pattern-cut into multiple moving knife；
A2, moving knife is positioned on lathe, by pending one side level upward, opens laser instrument and be connected with computer；
A3, removing laser failure are reported to the police；
A4, the procedure write is called, by setting for machine to dead-center position is processed, laser head is set with moving knife upper surface
Distance；
A5, to moving knife upper surface apply laser pulse according to program setting by laser instrument and be scanned quenching to form a kind of high hard
The oxide layer of degree；
A6, after moving knife upper surface is scanned, by moving knife be transferred on water mill bed to scanning formed oxide layer refine；
A7, the another side of moving knife is successively quenched and refined according to A6 steps；
A8, the moving knife after fine grinding is cooled down；
The laser is scanned in the moving knife surface periphery, and the alternate quenched zone (2) of soft or hard and Pu Zhiqu (3) are formed after quenching,
The quenched zone (2) is formed from many line and curve connections that harden to moving knife center direction protrusion, and the lines that harden are by Pu Zhiqu
(3) be divided into the Pu Zhiqu (3) and Pu Zhiqu (3) two parts by inner edge side by outer edge side, a portion outer edge side it is general
Matter area (3) is located at the region of the close moving knife outer edge side by lines separation of hardening, in the Pu Zhiqu by outer edge side not being quenched
(3) internal inner edge side Pu Zhiqu (3) is wrapped to form multiple sawtooth and is continuing with by the lines that harden after being worn.
2. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：The cooling step is that nature is cold
But.
3. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：The coolant of cooling is liquid nitrogen,
The pressure of liquid nitrogen is 0.02Pa.
4. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：Laser pulse in the A5 steps
Power be 1500W.
5. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：The light of the laser in the A5 steps
Square of the spot for 3 millimeters of the length of side.
6. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：The section bar is NM550 steel plates.
7. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：In the A4 steps laser head with it is dynamic
The distance of knife upper surface is 330 millimeters.
8. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：Laser scanning speed in the A5 steps
Spend for 950 mm/mins.
9. the manufacture craft of disintegrating machine moving knife according to claim 1, it is characterised in that：The amount of feeding is refined in the A6 steps
0.1～0.3 millimeter.
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 |
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| Publication Number | Publication Date |
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| CN104480255A CN104480255A (en) | 2015-04-01 |
| CN104480255B true CN104480255B (en) | 2017-04-05 |
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| 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373531B (en) * | 2018-04-13 | 2021-07-27 | 杭州巨星科技股份有限公司 | Method for treating cutting edge, member having cutting edge, and tool having 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 |
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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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9463531B2 (en) * | 2009-10-23 | 2016-10-11 | Kennametal Inc. | Three-dimensional surface shaping of rotary cutting tool edges with lasers |
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2014
- 2014-12-22 CN CN201410819651.3A patent/CN104480255B/en active Active
Patent Citations (7)
| 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 |
| 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 |
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| CN104480255A (en) | 2015-04-01 |
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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 |