CN207998622U - A kind of tool with cutting edge - Google Patents
A kind of tool with cutting edge Download PDFInfo
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- CN207998622U CN207998622U CN201820337821.8U CN201820337821U CN207998622U CN 207998622 U CN207998622 U CN 207998622U CN 201820337821 U CN201820337821 U CN 201820337821U CN 207998622 U CN207998622 U CN 207998622U
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- tool
- cutting edge
- hardened layer
- hardness
- laser
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- 238000005520 cutting process Methods 0.000 title claims abstract description 80
- 239000011159 matrix material Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 230000007704 transition Effects 0.000 claims description 16
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 239000010935 stainless steel Substances 0.000 claims description 14
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 8
- 239000010962 carbon steel Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 208000028804 PERCHING syndrome Diseases 0.000 claims description 5
- 229910001315 Tool steel Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 230000001351 cycling effect Effects 0.000 claims description 3
- 238000010791 quenching Methods 0.000 description 34
- 230000000171 quenching effect Effects 0.000 description 33
- 238000010586 diagram Methods 0.000 description 10
- 238000005496 tempering Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 210000000080 chela (arthropods) Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001339 C alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Abstract
The utility model discloses a kind of tools with cutting edge, including matrix and cutting edge, wherein having laser cycle heat treatment hardened layer at the cutting edge, the hardness of the hardened layer is higher than the hardness of described matrix.
Description
Technical field
The utility model is related to field of tool, specifically the tool with cutting edge.
Background technology
The current common tool with cutting edge has knife class tool, clamp type tool etc..
Wherein common knife class tool includes replaceable blade utility knife and traditional stainless steel with blades as shown in Figure 1
Class tool such as jackknife is singly operated on, chopper, dagger, scissors, pliers, pipe cutter, perching knife etc., and common clamp type tool has
Cutting pliers, diagonal cutting nippers, nipper plier etc..
In the prior art blades manufacture when generally use high carbon tool steel (such as T8, T8Mn, T9, T10, T11, T12 and
T13 etc.) it is matrix, it is assembled after grinding is put the first edge on a knife or a pair of scissors again after carrying out conventional quenching, tempering.Specifically, in the prior art, replaceable blade utility knife
Piece is that the once heat treatment including quenching and tempering is carried out in atmosphere protection heating furnace, heating speed, Cooling Quenching speed
Spend relatively slow, blade crystallite dimension is coarseer after quenching, and for grain size number at 7-9 grades or so, intensity is relatively low.Including sword
Mouthful, hardness is close to uniform on the entire blade of matrix.But during grinding is put the first edge on a knife or a pair of scissors, due to that can be produced when grinding cutting edge
Raw more grinding heat, causes cutting edge the effect of some like tempering, and edge hardness is even also than matrix hardness after grinding
Low 0.5-1.0HRC or so.Therefore when the integral hardness of blades is higher, the wearability of cutting edge is preferable, but blade is integrally crisp
Property is larger;When the integral hardness of blades is relatively low, blade overall flexibility is preferable, but tool edge wear-proof is relatively low, service life
It is bad.
In the prior art stainless steel-like tool edge matrix generally use martensite steel (such as 20Cr13,30Cr13,
40Cr13,50Cr15MoV, 68Cr17,95Cr18 and 90Cr18MoV etc.), it is opened again through grinding after carrying out conventional quenching, tempering
Sword.Similarly, such tool be in atmosphere protection heating furnace carry out primary quenching and tempering heat treatment, heating speed,
Cooling Quenching speed is relatively slow, and stainless steel knife crystallite dimension is coarseer after quenching, and grain size number is at 7-9 grades or so, by force
It spends relatively low;Hardness is close to uniform on the entire stainless steel knife including cutting edge, matrix.But it puts the first edge on a knife or a pair of scissors process in grinding
In, due to will produce more grinding heat when grinding cutting edge, the effect of some like tempering, cutting edge after grinding are caused to cutting edge
Hardness even 0.5-1.5HRC also lower than matrix hardness or so.When the integral hardness of tool is higher, the wearability of cutting edge is preferable,
But tool entirety brittleness is larger;When the integral hardness of tool is relatively low, tool overall flexibility is preferable, but tool edge wear-proof is relatively low,
Service life is bad.
The matrix of pincers class product generally uses carbon steel, steel alloy (such as 55#, 50CrV, 60CrV and 55CrNi in the prior art
Deng), it is filled after blanking, hot forging, machining and riveting arrangement, bulk heat treatmet, cutting edge high-frequency quenching, arrangement and surface treatment
Match.Such tool is when carrying out cutting edge high-frequency quenching, and frequently with manual operations, heating time, heating location fluctuation are larger, accordingly
Layer thickness of hardening, quench-hardened case position also have large change;And the high-frequency heating time is longer, quenched cutting edge grain structure
Also larger, there is also same problems.
Therefore, those skilled in the art, which is dedicated to developing a kind of matrix, has relatively low hardness and a higher toughness and sword
Mouth has higher hardness, the tool of wearability and its manufacturing method.
Utility model content
In view of the drawbacks described above of the prior art, the technical problem to be solved by the utility model is to provide a kind of matrix tools
There are relatively low hardness and a higher toughness and cutting edge has higher hardness, the tool of wearability and its manufacturing method.
To achieve the above object, the utility model provides a kind of tool with cutting edge, including matrix and cutting edge, wherein
There is laser cycle heat treatment hardened layer, the hardness of the hardened layer to be higher than the hardness of described matrix at the cutting edge.
In a better embodiment of the utility model, the hardness of the laser cycle heat treatment hardened layer exists
58HRC or more.Further, the hardness of the laser cycle heat treatment hardened layer is between 62-68HRC.
In another better embodiment of the utility model, the thickness of the laser cycle heat treatment hardened layer exists
Between 0.20-2.50mm.Further, the thickness of the laser cycle heat treatment hardened layer is between 0.30-1.80mm.
In another better embodiment of the utility model, the laser cycle heat treatment hardened layer and described matrix
Between include transition zone.Further, the thickness of the transition zone is between 0.10-0.80mm.Further, the transition
The thickness of layer is between 0.20-0.60mm.
In another better embodiment of the utility model, the tool with cutting edge is blades or has
The tool of blades.Further, the hardness of the laser cycle heat treatment hardened layer is between 65-66HRC.Further
Ground, the thickness of the laser cycle heat treatment hardened layer is between 0.40-0.45mm.Further, the laser cycling hot
It includes transition zone to handle between hardened layer and described matrix, and the thickness of the transition zone is between 0.25 and 0.35 mm.
In another better embodiment of the utility model, the material of described matrix is high carbon tool steel.Further
Ground, the high carbon tool steel are T8, T8Mn, T9, T10, T11, T12 or T13.
In another better embodiment of the utility model, the tool with cutting edge is with stainless steel cutting edge
Tool.Further, the tool with stainless steel cutting edge is jackknife, scissors, pliers, cutter, perching knife, singly operates on or an ancient type of spoon
Head, the stainless steel are 20Cr13,30Cr13,40Cr13,50Cr15MoV, 68Cr17,95Cr18 or 90Cr18MoV.
In another better embodiment of the utility model, the tool with cutting edge is clamp type tool.Further
Ground, the clamp type tool are nipper plier or diagonal cutting nippers or cutting pliers.Wherein, the material of described matrix is carbon steel or steel alloy.Into
One step, the carbon steel or steel alloy are 55#, 50CrV, 60CrV or 55CrNi.
Test result proves that the utility model provides a kind of tool and its manufacturing method with cutting edge so that tool
While matrix has relatively low hardness and higher toughness, the crystal grain of cutting edge has been refined, has made it have higher hardness, resistance to
Mill property, greatly improved the working durability of tool.
The technique effect of the design of the utility model, concrete structure and generation is made furtherly below with reference to attached drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Description of the drawings
Fig. 1 is the schematic diagram of the blades in one embodiment according to the present utility model.
Fig. 2 is the schematic diagram of the jackknife in one embodiment according to the present utility model.
Fig. 3 is the schematic diagram of the scissors in one embodiment according to the present utility model.
Fig. 4 is the schematic diagram of the pliers in one embodiment according to the present utility model.
Fig. 5 is the schematic diagram of the cutter in one embodiment according to the present utility model.
Fig. 6 is the schematic diagram of the perching knife in one embodiment according to the present utility model.
Fig. 7 is the schematic diagram of the diagonal cutting nippers in one embodiment according to the present utility model.
Fig. 8 is the schematic diagram of the cutting pliers in one embodiment according to the present utility model.
Fig. 9 is the schematic diagram of the transition zone of one embodiment according to the present utility model.
Figure 10 is the metallographic structure figure of the blades cutting edge in one embodiment according to the present utility model.
The sharpness of blades in Figure 11 one embodiment according to the present utility model/durability degree test data.
Figure 12 laser circulating quenching schematic diagrames.
Specific implementation mode
For with the heat treatment for the relevant those skilled in the art of the utility model, addressed in the utility model, quench
Fire, tempering, high-frequency quenching and laser circulating quenching and the meaning of other technology contents and its term are known and determine.
Crystal grain refinement is one of effective way of strengthening metal material.And laser circulating quenching is quickly to add metal material
More than heat to AC1 temperature, heating region austenite grain can grow up it not yet in the quick forming core in former grain boundary in new crystal grain
Before, then by being quickly cooled down it is transformed into martensitic structure, obtain smaller martensitic crystal grains tissue.Metal material is repeated
1 time and 1 time or more quickly heat, be quickly cooled down, carries out so-called " circulating quenching " and sees Figure 12, to realize crystal grain thinning, strong
Change metal material purpose.
The utility model is suitable for the tool with cutting edge, and described below is according to the utility model and the specific reality realized
Apply mode and example.
Fig. 1 shows that a kind of blades, including matrix 1 and cutting edge 2,1 material of matrix are high carbon tool steel, such as
T8, T8Mn, T9, T10, T11, T12 or T13 etc..In one embodiment according to the present utility model, to improve the hard of cutting edge 2
By integral quenching and after being tempered and being ground and put the first edge on a knife or a pair of scissors, laser circulating quenching is being carried out to cutting edge 2 to blade for degree and wearability, from
And hardness has been obtained on cutting edge 2 and has been higher than 1 laser cycle heat treatment hardened layer of matrix, in the present embodiment, the hardened layer
Hardness has reached 65-66HRC, and thickness is between 0.40-0.45mm.Usually, CO can be used in laser2Gas laser, YAG
Solid state laser, optical fiber laser or DIODE semiconductor lasers.In the present embodiment, DIODE semiconductor lasers are used
Device, the relative moving speed of power laser head in 500W or more, laser circulating quenching is between 1.0-30.0m/min.With
Afterwards in order to eliminate structural stress, its performance is set more to stablize, the lonneal that the blades eliminate with stress is handled.
Used elimination stress equipment can be the continuous furnace (such as corresponding blades) with gas shield, can also be
Periodic batch-type furnace, multipurpose furnace (such as corresponding stainless steel tool, carbon steel/alloy pucellas class product) with gas shield.Disappear
De-stress treatment temperature is at 100-180 DEG C, and soaking time was at 2-6 hours.
The utility model applies also for the tool with stainless steel cutting edge, including includes matrix 3 and sword as shown in Figure 2
Mouthfuls 4 jackknife, Fig. 3 include that the scissors of matrix 5 and cutting edge 6, Fig. 4 include that the pliers of matrix 7 and cutting edge 8, Fig. 5 include
The cutter of matrix 9 and cutting edge 10, Fig. 6 include matrix 11 and cutting edge 12 perching knife and other it is unshowned singly operate on, dagger
Deng.Stainless steel is generally 20Cr13,30Cr13,40Cr13,50Cr15MoV, 68Cr17,95Cr18 or 90Cr18MoV etc..In root
It by integral quenching and tempering and is ground to the above-mentioned tool with stainless steel cutting edge according in one embodiment of the utility model
It cuts after putting the first edge on a knife or a pair of scissors, laser circulating quenching is carried out to cutting edge, be higher than at the laser cycling hot of matrix to obtain hardness on cutting edge
Hardened layer is managed, in the present embodiment, the hardness of the hardened layer is up to 58HRC or more, preferably between 62-68HRC, hardens thickness
Degree is between 0.20-2.50mm, preferably between 0.30-1.80mm.Usually, CO can be used in laser2Gas laser,
YAG solid state lasers, optical fiber laser or DIODE semiconductor lasers.In the present embodiment, DIODE semiconductors are used to swash
Light device, the relative moving speed of power laser head in 500W or more, laser circulating quenching is between 2.0-20.0mm/s.With
Afterwards in order to eliminate structural stress, so that its performance is more stablized, elimination stress has been carried out to the above-mentioned tool with stainless steel cutting edge
Lonneal processing.Used elimination stress equipment can be that the continuous furnace with gas shield is (such as corresponding practical
Blade), can also be the periodic batch-type furnace with gas shield, multipurpose furnace (such as corresponding stainless steel tool, carbon steel/alloy
Pucellas class product).Stress treatment temperature is eliminated at 100-180 DEG C, soaking time was at 2-6 hours.
The utility model is equally applicable to clamp type tool, include as shown in Fig. 7 and Fig. 8 include matrix 13 and cutting edge 14
Diagonal cutting nippers and cutting pliers including matrix 15 and cutting edge 16.In clamp type tool, basic material is generally carbon steel or alloy
Steel, such as 55#, 50CrV, 60CrV or 55CrNi.There is pincers class to above-mentioned in one embodiment according to the present utility model
Tool arranges, by conventional blanking, hot forging, machining and riveting after bulk heat treatmet, is carried out 2 times and 2 times to pincers class cutting edge
Above laser circulating quenching obtains laser cycle heat treatment hardened layer in pincers class product cutting edge, and the hardness of the hardened layer is higher than
Matrix hardness.In the present embodiment, the hardness of the hardened layer is up to 58HRC or more, preferably between 62-68HRC, hardens thickness
Degree is between 0.20-2.50mm, preferably between 0.30-1.80mm.Usually, CO can be used in laser2Gas laser,
YAG solid state lasers, optical fiber laser or DIODE semiconductor lasers.With DIODE semiconductor lasers, power exists
500W or more, the relative moving speed of laser head is between 2.0-20.0mm/s when laser circulating quenching.Subsequent to elimination group
Stress is knitted, its performance is made more to stablize, the above-mentioned lonneal for clamp type tool eliminate stress is handled.In this reality
It applies in example, adopts used elimination stress equipment, can be the continuous furnace (such as corresponding blades) with gas shield,
Can also be the periodic batch-type furnace with gas shield, multipurpose furnace (such as corresponding stainless steel tool, carbon steel/alloy pucellas class
Product).Stress treatment temperature is eliminated at 100-180 DEG C, soaking time was at 2-6 hours.
It is further discovered that in the above-described embodiments, to be formed by between laser circulating quenching hardened layer and tool base material
There are a transition zones, as shown in Figures 9 and 10.When because carrying out laser circulating quenching, beam direction and the perpendicular pass of cutting edge plane
System, the laser circulating quenching transition zone actually include the hardened layer that sub-fraction extends out from laser circulating quenching hardened layer
With close to the laser heat affected area of the hardened layer.The hardness of hardening layer segment in the transition zone may be with laser circulating quenching
Hardness it is consistent, but the hardness of laser heat affected area be less than matrix hardness.It is formed by the thickness of laser circulating quenching transition zone
Between 0.1-0.8mm.Preferably, the thickness of laser circulating quenching transition zone is formed by between 0.2-0.6mm.In practicality
In the embodiment of blade, the thickness of laser circulating quenching blades transition zone is in 0.25-0.35mm.
Figure 11 is shown in the embodiment of above-mentioned blades, to the life test result of blades.It is wherein vertical
Coordinate is the cut paper thickness that a cycle is often cut in test process, and abscissa is that cut paper cumulative according to this in test process is thick
Degree.In the test, using cut paper thickness total after 60 cycles of uninterrupted test as the cutting life of blade.It is in the prior art
The cutting life of blades is in 180-220 or so.
In the embodiment of above-mentioned blades, after laser circulating quenching, replaceable blade utility knife blade cutting edge hardness 66-
67HRC.And matrix hardness, in 62HRC, the hardness for being formed by laser circulating quenching replaceable blade utility knife hardened layer improves 4- than matrix
5HRC, working durability improve 2-3 times.Grain size number is new according to this practicality at 7-9 grades or so after opposite prior art processing
The grain size number of the blades cutting edge of one embodiment of type reaches 10-11 grades.
The preferred embodiment of the utility model described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to the design of the utility model in domain
Available technical solution is tested, it all should be in the protection domain being defined in the patent claims.
Claims (12)
1. a kind of tool with cutting edge, including matrix and cutting edge, which is characterized in that have at laser cycling hot at the cutting edge
Hardened layer is managed, the hardness of the hardened layer is higher than the hardness of described matrix.
2. a kind of tool with cutting edge as described in claim 1, wherein the hardness of the laser cycle heat treatment hardened layer exists
Between 62-68HRC.
3. a kind of tool with cutting edge as described in claim 1, wherein the thickness of the laser cycle heat treatment hardened layer exists
Between 0.30-1.80mm.
4. a kind of tool with cutting edge as described in claim 1, wherein the laser cycle heat treatment hardened layer and the base
Include transition zone between body, wherein the thickness of the transition zone is between 0.20-0.60mm.
5. a kind of tool with cutting edge as described in claim 1, wherein the tool with cutting edge is blades or tool
There is the tool of blades.
6. a kind of tool with cutting edge as claimed in claim 5, wherein the hardness of the laser cycle heat treatment hardened layer exists
Between 65-66HRC.
7. a kind of tool with cutting edge as claimed in claim 5, wherein the thickness of the laser cycle heat treatment hardened layer exists
Between 0.40-0.45mm.
8. a kind of tool with cutting edge as claimed in claim 5, wherein the laser cycle heat treatment hardened layer and the base
Include transition zone between body, the thickness of the transition zone is between 0.25 and 0.35 mm.
9. a kind of tool with cutting edge as claimed in claim 5, wherein the material of described matrix is high carbon tool steel.
10. a kind of tool with cutting edge as described in claim 1, wherein the tool with cutting edge is with stainless steel sword
Mouthful tool, including jackknife, scissors, pliers, cutter, perching knife, singly operate on and dagger.
11. a kind of tool with cutting edge as described in claim 1, wherein the tool with cutting edge is clamp type tool, including
Nipper plier, diagonal cutting nippers and cutting pliers.
12. a kind of tool with cutting edge as claimed in claim 11, wherein the material of described matrix is carbon steel or steel alloy.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820337821.8U CN207998622U (en) | 2018-03-13 | 2018-03-13 | A kind of tool with cutting edge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820337821.8U CN207998622U (en) | 2018-03-13 | 2018-03-13 | A kind of tool with cutting edge |
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| Publication Number | Publication Date |
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| CN207998622U true CN207998622U (en) | 2018-10-23 |
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ID=63839611
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| CN201820337821.8U Active CN207998622U (en) | 2018-03-13 | 2018-03-13 | A kind of tool with cutting edge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173959A1 (en) * | 2018-03-13 | 2019-09-19 | 杭州联和工具制造有限公司 | Tool having cutting edge and method for manufacturing same |
| CN110273050A (en) * | 2018-03-13 | 2019-09-24 | 杭州联和工具制造有限公司 | A kind of tool and its manufacturing method with cutting edge |
| 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 |
-
2018
- 2018-03-13 CN CN201820337821.8U patent/CN207998622U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019173959A1 (en) * | 2018-03-13 | 2019-09-19 | 杭州联和工具制造有限公司 | Tool having cutting edge and method for manufacturing same |
| CN110273050A (en) * | 2018-03-13 | 2019-09-24 | 杭州联和工具制造有限公司 | A kind of tool and its manufacturing method with cutting edge |
| 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 |
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