CN108453345A - A kind of blade processing method - Google Patents
A kind of blade processing method Download PDFInfo
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- CN108453345A CN108453345A CN201810538984.7A CN201810538984A CN108453345A CN 108453345 A CN108453345 A CN 108453345A CN 201810538984 A CN201810538984 A CN 201810538984A CN 108453345 A CN108453345 A CN 108453345A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Arc Welding In General (AREA)
Abstract
The invention belongs to cutter manufacture technical fields, and in particular to a kind of blade processing method.When in order to solve that import high-quality steel is used to make blade performance of the cutter to improve cutter at present, there is a problem of that cutter manufacture is of high cost, the invention discloses a kind of blade processing methods.The blade processing method, specifically includes following steps：Step S1, the manufacture for carrying out cutter hub prepares, and carries out cleaning treatment to knife edge part；Step S2 carries out the processing of blade strengthening layer using the complex method of welding and laser melting coating；Step S3 carries out reconditioning processing to blade strengthening layer, obtains final cutting edge.When method using the present invention carries out blade processing to cutter, the performance of blade can be not only greatly improved, ensures the using effect of cutter, and the requirement to cutter hub material can be reduced, reduce the cost of charp tool.
Description
Technical field
The invention belongs to cutter manufacture technical fields, and in particular to a kind of blade processing method.
Background technology
In China, the making material of cutter is typically chosen stainless steel, in order to ensure the final performance of cutter, in cutter
After ontology is shaped by stamped, then its intensity, hardness and wear-resisting property improved by heat treatment technics.But use is general
The cutter that logical martensitic stain less steel is process generally also can only achieve in the hardness of its blade position after heat treatment reinforcement
600HV or so, and the hardness number can no longer meet the performances such as high rigidity, the high-wearing feature that people should have high-end cutter
Requirement.
Currently, many domestic enterprises solution to the problems described above is directly to select external high-quality steel as cutter material
Matter, such as thousand layers of steel of Japan are selected to manufacture high-performance cutter, ensure the performance of final cutter, especially blade part with this
The hardness of position, but the purchase cost of cutter material can be greatly increased in this way, cause cutter manufacture cost to increase, and then increase
The price of cutter.
Invention content
When in order to solve that import high-quality steel is used to make blade performance of the cutter to improve cutter at present, there are cutter systems
Problem of high cost is made, the present invention proposes a kind of blade processing method.The blade processing method, specifically includes following steps：
Step S1, the manufacture for carrying out cutter hub prepares, and carries out cleaning treatment to knife edge part；
Step S2 carries out the processing of blade strengthening layer using the complex method of welding and laser melting coating；Wherein, first, it borrows
It helps the mode of welding to welding wire melt in advance and be fixed on it along the length direction of blade the upper surface of blade, makes blade
Upper surface forms cladding layer, obtains blade strengthening layer；
Step S3 carries out reconditioning processing to blade strengthening layer, obtains final cutting edge.
Preferably, in the step S2, the welding wire is flux-cored wire；Wherein, the medicament of flux-cored wire is hard particles
The mixed-powder of powder and cutter hub material powder, and carry out medicament package using ordinary steel belts.
It is further preferred that the medicament enhances composite powder using TiC particles, main component is TiC powder, Cr
Powder, Mo powder, Si powder, Ni powder, C powder, B powder, fluoride, chloride and Fe powder.
It is further preferred that the mass percent of main component is in the medicament：TiC powder is 5%~25%, Cr powder
End is 14%~17%, Mo powder is 0.6%~0.75%, Si powder is 1%~1.5%, Ni powder is 7%~10%, C powder
End is 0.1%~0.25%, B powder is 2%~4%, fluoride is 0%~2%, chloride is 0%~2% and surplus
Fe powder.
It is further preferred that the diameter dimension of the flux-cored wire is less than or equal to the width dimensions of blade.
Preferably, in the step S2, the welding uses TIG weld.
It is further preferred that the main technologic parameters of TIG weld are：Welding current is 80~220A, arc voltage 12
~20V, speed of welding are 2~5mm/s, and the upper surface of TIG welding guns and blade is in 65 °~70 ° of angle of inclination；Laser melting coating
Main technologic parameters are：Laser power is 1~2KW, spot diameter 2mm, defocusing amount 3mm, and laser head is in blade surface
90°；Complex protection gas is argon gas, throughput 8L/min.
Preferably, in the step S2, laser melting coating uses semiconductor laser beam.
A kind of cutter, the wherein knife edge part of the cutter carry out processing acquisition using the above method.
Preferably, the basic material of the cutter selects 3Cr13 stainless steels.
Method using the present invention has the advantages that when carrying out blade processing to cutter：
1, method using the present invention, by using the complex technique of welding and laser melting coating to using conventional stainless steel
The blade position of matter carries out the setting of cladding layer, to be realized to blade by the high rigidity, high intensity and wearability of cladding layer
The performance boost at position, to provide the end-use properties of cutter.In this manner it is possible to directly be carried out using conventional common iron
The processing of cutter hub reduces the manufacturing cost of cutter to substantially reduce the cost of material.
2, in the present invention, by the way that cladding powder is made as flux-cored wire, and the electricity generated using the relatively low source of welding current in advance
Arc to flux-cored wire melt in advance and be accurately fixed on it upper surface of blade, then recycles laser melting and coating technique pair
Flux-cored wire carries out melting the cladding layer for being formed and being covered in blade upper surface completely, final to realize to the accurate cladding of blade
Reason.In this way, can not only improve the utilization rate to cladding powder, the powder falling amount during conventional powder feeding is reduced, and can make
Ingredient in cladding powder is evenly distributed in the upper surface of blade, ensures the final performance of cladding layer.Meanwhile using the present invention
Method can also ensure per pass cladding processing after can be formed with effect cladding layer thickness, avoid using powder feeding cladding when go out
Show cladding layer uneven thickness and need to be repeated cladding processing, to improve the quality and efficiency of cladding, and then improves to knife
The treatment effeciency of sword.
Description of the drawings
Fig. 1 is schematic diagram when method using the present invention handles the blade of cutter；
Fig. 2 is the SEM shape appearance figures that cladding layer is obtained in embodiment 1；
Fig. 3 is the SEM shape appearance figures that cladding layer is obtained in comparative example 1.
Specific implementation mode
It describes in detail with reference to the accompanying drawings and examples to technical scheme of the present invention.
The method that blade is handled using the present invention, to selecting the cutter that common stainless steel is basic material to carry out at blade
Reason the specific steps are：
Step S1, the manufacture for carrying out cutter hub prepares, and carries out cleaning treatment to the knife edge part of cutter hub.
Wherein, in the present invention, laser cutting simultaneous manufacturing had both may be used in cutter hub, punching press can also be used primary
Forming makes.After the preparation for completing cutter hub, need to carry out polishing and cleaning treatment to blade position, to remove blade surface
Iron rust and greasy dirt, to ensure subsequently to the quality and effect of blade processing.In addition, after completing above-mentioned processing, by fixture
The body portion of cutter is fixed, blade is made to be arranged upward.
Step S2 is handled blade position using the complex method of welding and laser melting coating, obtains blade strengthening layer.
First, along the length direction of blade, to welding wire melt in advance and be precisely fixed on it upper table of blade by welding procedure
Then face carries out cladding processing to the welding wire being fixed on blade using laser, so that the upper surface of blade is formed cladding layer, obtain
Obtain blade strengthening layer.
In the present invention, welding wire uses flux-cored wire, wherein the medicament of flux-cored wire is hard-particle powder and cutter hub material
The mixed-powder of matter powder, and carry out medicament package by ordinary steel belts.In this way, can not only be carried using cutter hub material powder
The switching performance of high medicament and cutter hub, and can form one layer of hard particles cladding in blade position using hard-particle powder
Layer, to greatly improve the intensity, hardness and wearability of blade position.
In addition, when for selecting the cutter that stainless steel is basic material to carry out blade processing, medicament may be used TiC
Grain enhancing composite powder, main component are TiC powder, Cr powder, Mo powder, Si powder, Ni powder, C powder, B powder
End, fluoride, chloride and Fe powder, and the mass percent of main component is in medicament：TiC powder be 5%~25%,
Cr powder is 14%~17%, Mo powder is 0.6%~0.75%, Si powder is 1%~1.5%, Ni powder be 7%~
10%, C powder is 0.1%~0.25%, B powder is 2%~4%, fluoride is 0%~2%, chloride be 0%~2% with
And the Fe powder of surplus.It equally, can also be according to the difference of specific cutter hub material and to blade strengthening layer performance requirement not
Together, it selects the medicament of heterogeneity to manufacture welding wire, and carries out corresponding blade strengthening layer processing.
Preferably, in the present invention, when carrying out the pre- thawing fixation of welding wire by the way of TIG weld, laser skill is utilized
Art synchronizes cladding processing to the welding wire for being fixed on blade upper surface, to obtain final cladding layer.
Wherein, it is using pulse mode, major weld process parameters when carrying out TIG weld：Welding current be 80~
220A, arc voltage be 12~20V, speed of welding be 2~5mm/s, and the upper surface of TIG welding guns and blade keep 65 °~
70 ° of angle of inclination.It is using semiconductor laser beam, main technologic parameters when carrying out laser melting coating：Laser power be 1~
2KW, spot diameter 2mm, defocusing amount 3mm, laser head are arranged vertically with blade surface in 90 °, and use throughput for
The argon gas of 8L/min is as complex protection gas.
Equally, the pre- thawing that other welding manners carry out welding wire can also be selected to fix as the case may be, and used
Other laser beams carry out Laser Cladding Treatment, such as CO2Gas laser light beam, Nd:YAG Solid State Lasers light beam or optical-fiber laser
Light beam.
In addition, in the present invention, the diameter dimension of welding wire will be preferably designed for the thickness less than or equal to blade position,
The welding wire after thawing can be supported completely in order to the upper surface of blade, avoid the overflow for occurring to melt welding wire, to
The utilization rate to welding wire is improved, waste is reduced, reduces processing cost.In addition, if can not be completed after being handled by single track cladding
All standing to blade upper surface, then can carry out the cladding processing of welding wire again, handle what guarantee finally obtained by multiple tracks
Blade strengthening layer quality.
Step S3, the reconditioning that the cutter to completing above-mentioned processing carries out blade strengthening layer are handled, and obtain final cutting edge.
Wherein, include grinding, machining or abrasion to the reconditioning processing method of blade strengthening layer, specific reconditioning mode can be according to reality
It needs to carry out selection processing.
Embodiment 1
In conjunction with shown in Fig. 1, method using the present invention is the knife of basic material to selecting the 3Cr13 stainless steels of 2mm thickness
Having main process when carrying out blade position processing is：
First, the preparation of flux-cored wire 1 is carried out, and the outer diameter of welding wire 1 is processed as 2mm, the width with blade 2
Size is corresponding.Wherein, select 316L stainless steel pipes as the steel band of package medicament, medicament is respectively by weight percent：
15% TiC powder, 17% Cr powder, 0.8% Mo powder, 1.2% Si powder, 7% Ni powder, 0.2% C powder
End, 3% B powder, 0.5% fluoride powder, 0.5% chloride powder and remaining Fe powder constituent.
Then, the combined processing of TIG welderings and laser melting coating is carried out to flux-cored wire in the upper surface of blade.Along blade 2
Length direction melts flux-cored wire 1 and it is accurately fixed on to blade 2 in advance by the electric arc that TIG welding guns 3 generate
Upper surface location, meanwhile, along the length direction of blade 2, by laser 4 to being fixed on the flux-cored wire 1 of 2 upper surface of blade
The cladding processing synchronized forms cladding layer in the upper surface of blade 2, obtains blade strengthening layer 5.
Wherein, the major parameter of TIG weld is：Welding current is 130A, arc voltage 15V, speed of welding 4mm/
S, and the upper surface of TIG welding guns and blade is in 70 ° of angle of inclination；The major parameter of laser melting coating is：Laser beam swashs
Luminous power is 1.5KW, spot diameter 2mm, defocusing amount 3mm, and laser head is in 90 ° of vertical relations with blade upper surface, and
It is 8L/min that complex protection gas, which selects argon gas, throughput control,.
Finally, the blade strengthening layer 5 of acquisition is ground, machined or abrasion processing, to finally obtaining cutting edge.
Comparative example 1
It is directly the cutter of basic material to selecting the 3Cr13 stainless steels of 2mm thickness using conventional laser cladding method
Carry out the cladding processing of blade position.Wherein, the ingredient of cladding powder is identical as the medicine component of flux-cored wire in embodiment 1,
And cladding powder is directly delivered to the upper surface of blade using conventional powder feeder.At the same time, use is in the same manner as in Example 1
Laser melting coating parameter, difference lies in the laser power of laser beam be 2KW, to obtain corresponding cladding layer and pass through place
Reason obtains cutting edge.
Next, carrying out performance evaluation to obtaining cutting edge in embodiment 1 and comparative example 1.
Hardness determination is carried out respectively by five different points to cutting edge and is averaged, and is obtained hard shown in table 1
Angle value.By carrying out SEM morphology analysis respectively to the cutting edge in embodiment 1 and comparative example 1, obtain respectively such as Fig. 2 and Fig. 3 institutes
The SEM shape appearance figures shown.
Table 1
In conjunction with the data in table 1, to the edge hardness obtained in embodiment 1, the edge hardness obtained in comparative example 1 and
It is compared to hardness of the blade of common martensitic stain less steel cutter after Overheating Treatment using the prior art in background technology, it can
Clearly to obtain：1) it after being handled conventional stainless steel by using the complex method of TIG welderings and laser melting coating, can obtain
The blade that average hardness reaches 1100HV is obtained, the hardness number of blade when significantly larger than using common stainless steel in the prior art
600HV；2) highest hardness difference only has 50HV between the different positioning of cladding layer in embodiment 1, and cladding layer in comparative example 1
Highest hardness difference can reach 305HV between different points, therefore, can not only be obtained using the method for invention and be swashed with conventional
The cladding layer of light cladding suitable hardness when handling, and the hardness distribution of entire cladding layer is more balanced, keeps the entirety of blade resistance to
It is more preferable to grind performance.
In conjunction with shown in Fig. 2 and Fig. 3, in comparative example 1 in the SEM shape appearance figures of cladding layer and comparative example 1 cladding layer SEM
Shape appearance figure is can be found that：Method using the present invention can obtain hard-particle powder and be distributed more uniform cladding layer, and right
It obtains hard-particle powder in ratio 1 to there are problems that being unevenly distributed in cladding layer, and TiC hard particles therein occur
Agglomeration influences the performance of entire cutter to lead to occur the defects of stomata and crackle in microstructure of surface cladding layer
And service life.
In addition, in carrying out the operating process of embodiment 1 and comparative example 1, pass through the energy work rate and cladding powder to using
The utilization rate at end carries out statistics discovery：1) energy used in embodiment 1 is the laser power of 1.5KW and the TIG welderings of 130A
Electric current is connect, and the laser power requirement used in comparative example 1 reaches 2KW, just can guarantee effective thawing to cladding powder；2)
By the calculating to cladding powder usage amount, 95% is reached to the utilization rate of cladding powder in embodiment 1, and in comparative example 1
In due to blade width very little, there is a large amount of powder directly to fall during powder feeding, effective cladding operation can not be carried out, melt
It covers powder using efficiency and there was only 78%.Moreover, needing progress in the process, repeatedly cladding processing just can guarantee final acquisition repeatedly
Cladding layer thickness.As seen from the above comparison, method using the present invention can not only substantially reduce to laser power and
The input quantity of bonding power reduces energy consumption, and can increase substantially the utilization rate and cladding efficiency to cladding powder, to
Cost is reduced, productivity is improved.
Claims (10)
1. a kind of blade processing method, which is characterized in that this method specifically includes following steps：
Step S1, the manufacture for carrying out cutter hub prepares, and carries out cleaning treatment to knife edge part；
Step S2 carries out the processing of blade strengthening layer using the complex method of welding and laser melting coating；Wherein, first, by weldering
The mode connect to welding wire melt in advance and be fixed on it along the length direction of blade the upper surface of blade, then, using swashing
Light carries out cladding processing to the welding wire being fixed on blade, so that the upper surface of blade is formed cladding layer, obtains blade strengthening layer；
Step S3 carries out reconditioning processing to blade strengthening layer, obtains final cutting edge.
2. blade processing method according to claim 1, which is characterized in that in the step S2, the welding wire is medicine core
Welding wire；Wherein, the medicament of flux-cored wire is the mixed-powder of hard-particle powder and cutter hub material powder, and uses ordinary steel
Band carries out medicament package.
3. blade processing method according to claim 2, which is characterized in that the medicament enhances iron-based using TiC particles
Composite powder, main component are TiC powder, Cr powder, Mo powder, Si powder, Ni powder, C powder, B powder, fluoride, chlorine
Compound and Fe powder.
4. blade processing method according to claim 3, which is characterized in that the quality percentage of main component in the medicament
Than for：TiC powder is 5%~25%, Cr powder is 14%~17%, Mo powder is 0.6%~0.75%, Si powder is 1%
~1.5%, Ni powder is 7%~10%, C powder is 0.1%~0.25%, B powder is 2%~4%, fluoride be 0%~
2%, chloride is the Fe powder of 0%~2% and surplus.
5. blade processing method according to claim 2, which is characterized in that the diameter dimension of the flux-cored wire be less than etc.
In the width dimensions of blade.
6. blade processing method according to claim 1, which is characterized in that in the step S2, the welding uses
TIG weld.
7. blade processing method according to claim 6, which is characterized in that the main technologic parameters of TIG weld are：Welding
Electric current is 80~220A, and arc voltage is 12~20V, and speed of welding is 2~5mm/s, and the upper surface of TIG welding guns and blade is in
65 °~70 ° of angle of inclination；The main technologic parameters of laser melting coating are：Laser power be 1~2KW, spot diameter 2mm, from
Coke amount is 3mm, and laser head is in 90 ° with blade upper surface；Complex protection gas is argon gas, throughput 8L/min.
8. blade processing method according to claim 1, which is characterized in that in the step S2, laser melting coating uses
Semiconductor laser beam.
9. a kind of cutter, which is characterized in that the knife edge part of the cutter is using described in any one of the claims 1-8
Method carries out processing acquisition.
10. cutter according to claim 9, which is characterized in that the basic material of the cutter selects 3Cr13 stainless steels.
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| CN201810538984.7A CN108453345B (en) | 2018-05-30 | 2018-05-30 | Blade processing method |
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| CN201810538984.7A CN108453345B (en) | 2018-05-30 | 2018-05-30 | Blade processing method |
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| CN110181241A (en) * | 2019-06-25 | 2019-08-30 | 李坚 | A kind of blade production technology |
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| CN110424002A (en) * | 2019-06-25 | 2019-11-08 | 阳江市五金刀剪产业技术研究院 | A kind of composite coating, preparation method and application |
| CN111822827A (en) * | 2020-07-28 | 2020-10-27 | 奇男子五金制品（浙江）有限公司 | Method for hardening knife edge by welding wire and knife edge jig |
| CN112935740A (en) * | 2021-01-26 | 2021-06-11 | 宁波艾赛德航空科技有限公司 | Machining process of special tool for forming inner cavity of aerospace engine |
| CN113278962A (en) * | 2021-04-16 | 2021-08-20 | 北京工业大学 | Preparation method of laser cladding layer of cutter edge based on powder-cored welding wire deep melting mode |
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| CN110218947A (en) * | 2019-06-14 | 2019-09-10 | 珠海粤清特环保科技有限公司 | A kind of alloy material and its application |
| CN110181241A (en) * | 2019-06-25 | 2019-08-30 | 李坚 | A kind of blade production technology |
| CN110424002A (en) * | 2019-06-25 | 2019-11-08 | 阳江市五金刀剪产业技术研究院 | A kind of composite coating, preparation method and application |
| CN110424002B (en) * | 2019-06-25 | 2022-03-15 | 阳江市五金刀剪产业技术研究院 | Composite coating, preparation method and application |
| CN111822827A (en) * | 2020-07-28 | 2020-10-27 | 奇男子五金制品（浙江）有限公司 | Method for hardening knife edge by welding wire and knife edge jig |
| CN111822827B (en) * | 2020-07-28 | 2024-05-14 | 奇男子五金制品（浙江）有限公司 | Method for hardening knife edge by welding wire and knife edge jig |
| CN112935740A (en) * | 2021-01-26 | 2021-06-11 | 宁波艾赛德航空科技有限公司 | Machining process of special tool for forming inner cavity of aerospace engine |
| CN112935740B (en) * | 2021-01-26 | 2021-10-01 | 宁波艾赛德航空科技有限公司 | Machining process of special tool for forming inner cavity of aerospace engine |
| CN113278962A (en) * | 2021-04-16 | 2021-08-20 | 北京工业大学 | Preparation method of laser cladding layer of cutter edge based on powder-cored welding wire deep melting mode |
| CN113278962B (en) * | 2021-04-16 | 2022-12-09 | 北京工业大学 | Preparation method of laser cladding layer of cutter edge based on powder-cored welding wire deep melting mode |
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