CN113913729B - Blade strengthening method - Google Patents
Blade strengthening method Download PDFInfo
- Publication number
- CN113913729B CN113913729B CN202111174358.2A CN202111174358A CN113913729B CN 113913729 B CN113913729 B CN 113913729B CN 202111174358 A CN202111174358 A CN 202111174358A CN 113913729 B CN113913729 B CN 113913729B
- Authority
- CN
- China
- Prior art keywords
- coating
- cutting edge
- groove
- blank
- cutter blank
- 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.)
- Active
Links
Images
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- 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
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Knives (AREA)
Abstract
A method of strengthening a cutting edge comprising: s1, processing a groove at the cutting edge of a cutter blank substrate; s2, preparing a coating inside the groove processed in the S1; and S3, machining the cutting edge of the cutter blank with the coating prepared in the step S2 to obtain a composite cutting edge. And in the S3, when the cutting edge of the cutter blank with the prepared coating is machined, the machined cutting edge simultaneously comprises the coating and the cutter blank base material, and the foremost end of the cutting edge is the coating. Compared with the method of directly cladding a strengthening coating on the cutting edge of the cutter blank (the height of the coating is limited by the thickness of the cutter blank), the coating prepared by the method can fill the whole groove, a high-temperature molten pool can be maximally spread, the prepared coating has wider width, and the cutting edge has larger height after edging, so that the durability of the cutting edge is more durable, and the service life of the cutter is longer.
Description
Technical Field
The invention relates to the technical field of cutters, in particular to a method for strengthening a cutting edge.
Background
The traditional and mature methods for strengthening the cutting edge of the cutter comprise heat treatment, surface quenching, thermal diffusion technology, electroplating, thermal spraying and the like. The heat treatment, surface quenching and heat diffusion technology can change the performance of the blade without changing the base material, the methods have very limited degree of improving the performance of the blade, and although the plating and thermal spraying can form a coating layer by using special alloy powder, the bonding strength of the coating layer and the base is limited. The above methods have respective defects and shortcomings, the degree of improving the performance of the cutting edge is very limited, and the development of the high-end cutter industry in China is severely restricted. Subsequently, people developed a concept that a high-performance material is prepared into a blade and is connected to a main body of a blade blank by using a welding connection technology, so that 'good steel is used on the blade'. However, the strength and the corrosion resistance of the welding area of the blade edge prepared by the preparation technology are reduced, and the performance index of the knife and the scissors is seriously reduced.
With the social progress and the improvement of living standard of people, people pay more and more attention to the quality of life, and the performance of the traditional household cutter can not meet the high-end and rich life, so that the high-performance customized cutter begins to enter the visual field of people. The technology for directly preparing a layer of high-performance coating at the edge part of a cutter blank by adopting an advanced laser cladding technology is widely applied and popularized at home and abroad, such as CN202110038036.9, CN202110038015.7, CN202110038016.1, CN201620957179.4, CN201610656449.2, CN201510942439.0, CN201610559096.4 and CN202010955926.1. Later, some enterprises develop a plasma cladding technology to prepare the wear-resistant and corrosion-resistant coating on the cutting edge of the cutter blank, such as patents with application numbers of CN201910469894.1 and CN 201910542282.0.
The laser cladding or plasma cladding technology is utilized to directly prepare the high-performance coating at the cutting edge of the cutter blank, and the problems are that: after the edge is opened, the cutting part of the blade is completely provided with the high-performance coating, and the high-hardness and high-wear-resistance coating has the properties of high hardness and high wear resistance, so that the brittleness is higher, the strengthened blade is easy to tip, and the performance of the blade is damaged, so that the blade is only suitable for being used as a fruit knife and a slicing knife. Therefore, there is an urgent need to develop a cutting blade with high hardness, high wear resistance, high corrosion resistance, and both strength and toughness, which can be applied to various knife industries, such as a chop knife, an outdoor knife, a fruit knife, a slicing knife, and the like.
It can be seen that there are a number of problems with the prior art.
Disclosure of Invention
Therefore, in order to solve the above problems in the prior art, the present invention provides a method for strengthening a blade.
The invention solves the problems through the following technical means:
a method of strengthening a cutting edge comprising:
s1, processing a groove at the cutting edge of a cutter blank substrate;
s2, preparing a coating inside the groove processed in the S1;
and S3, machining the cutting edge of the cutter blank with the coating prepared in the S2 to obtain a composite cutting edge.
Furthermore, the groove in S1 comprises a groove plane and a groove inclined plane, the groove plane is parallel to the lower surface of the knife blank, and an included angle is formed between the groove inclined plane and the groove plane.
Further, the inclined surface of the groove and the plane of the groove form an included angle in the range of 110-160 degrees.
Further, the vertical distance H between the plane of the groove and the lower surface of the cutter blank is less than H/2, wherein H is the thickness of the cutter blank material.
Further, the technology for preparing a coating in S2 is as follows: a laser cladding technique, a plasma cladding technique, an arc additive manufacturing technique, a laser additive manufacturing technique, or an electron beam additive manufacturing technique.
Further, a coating layer prepared in the step S2 is: an iron-based coating, a nickel-based coating, a cobalt-based coating, a metal-based composite coating, or a ceramic-based composite coating.
Further, when a layer of coating is prepared in S2, the heat source processing position is located above the inclined plane of the groove, and a certain included angle is formed between the feeding direction of the heat source and the coating material and the vertical direction.
Further, the height H2> H1> H/2 of the coating, wherein H is the thickness of the cutter blank material, and H1 is the vertical distance between the plane of the groove and the upper surface of the cutter blank; h2 is the coating height, and the coating width is greater than the horizontal dimension L of the groove plane.
Furthermore, after the coating is prepared, corresponding heat treatment is carried out according to the coating material.
Further, when the cutting edge of the coated cutter blank is machined in the step S3, the machined cutting edge simultaneously comprises the coating and the cutter blank base material, and the foremost end of the cutting edge is the coating.
The cutter cutting edge prepared by the method for strengthening the cutting edge integrates the high hardness of the high-performance coating and the high toughness of the cutter blank substrate, so that the cutting edge of the cutter made of the layered composite material can be obtained, and the high-performance coating material is arranged at the forefront end of the cutting edge, so that the cutting sharpness and the durability are ensured. When the cutting edge is used for cutting, the sharpness and the durability can be ensured, and the high toughness of the cutting edge can be ensured. The composite cutting edge formed by combining the soft and hard materials in a layered manner can avoid the problem that the traditional coating cutter is easy to break. Compared with the method of directly cladding a strengthening coating on the cutting edge of the cutter blank (the height of the coating is limited by the thickness of the cutter blank), the coating prepared by the method can fill the whole groove, a high-temperature molten pool can be maximally spread, the prepared coating has wider width, and the cutting edge has larger height after edging, so that the durability of the cutting edge is more durable, and the service life of the cutter is longer.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a blank substrate;
FIG. 2 is a front view of a blank substrate;
FIG. 3 is a schematic view of a groove formed in the cutting edge of the blank;
FIG. 4 is a schematic view of the groove plane at 150 to the groove slope;
FIG. 5 is a schematic view of the groove plane at 135 degrees from the groove slope;
FIG. 6 is a schematic view of the groove plane at 120 degrees to the groove bevel;
FIG. 7 is a three-dimensional view of the groove plane at 120 to the groove slope;
FIG. 8 is a schematic diagram of a high performance coating preparation process;
FIG. 9 is a schematic representation of the completion of the coating preparation;
FIG. 10 is a schematic view of the knife edge composition after the knife edge has been sharpened;
reference numerals:
1-cutting blank; 12-cutting edge part of the cutter blank; 13-the front surface of the blank;
14-the upper surface of the cutter blank; 2-groove shape; 3-groove slope;
4-groove plane; 5-high performance coating; 6-a tool cutting edge;
61-secondary front end cutting edge coating; 62-secondary leading-end cutting edge substrate; 63-frontmost cutting edge coating;
7-coating processing heat source; 8-direction of feed of coating material; 9-high temperature molten pool;
h, the thickness of the cutter blank; h-the vertical distance between the plane of the groove and the lower surface of the cutter blank;
h 1-the vertical distance between the plane of the groove and the upper surface of the knife blank; theta is the included angle between the groove plane and the groove inclined plane;
l-the width of the groove plane; h 2-coating height.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Examples
The invention is described in more detail below:
a method of strengthening a cutting edge comprising:
s1, processing a groove at the cutting edge part 12 of a cutter blank; the base material of the blade blank 1 includes but is not limited to: martensitic stainless steel, austenitic stainless steel, ferritic stainless steel, high speed steel, tool steel, composite steel. Preferably, the cutter blank material can also be high-speed steel with higher carbon content, tool steel, martensitic stainless steel with lower cost, such as 1Cr13,2Cr13, austenitic stainless steel with lower cost, such as 304,304Cu,316 and the like.
Preferably, the groove in the S1 comprises a groove sheet plane 4 and a groove inclined plane 3, the groove plane 4 is parallel to the lower surface of the knife blank, and the groove inclined plane 3 and the groove plane 4 form an included angle.
Preferably, the groove bevels 3 have an angle in the range of 110 to 160 ° with the groove plane 4. Preferably, the angle between the groove plane 4 and the groove bevel 3 is 135 °.
Preferably, the perpendicular distance H between the plane 4 of the recess and the lower surface of the blank is < H/2, where H is the thickness of the material of the blank 1.
It should be noted that, by setting the above parameters, it can be ensured that when the cutting edge is sharpened, the foremost end of the cutting edge is the strengthened coating, and the next foremost end is the combination of the strengthened coating and the base material, thereby ensuring that the cutting edge has toughness and hardness.
Preferably, before the preparation of the next coating, the grooves are free from impurities such as oil stains, rust, moisture and the like. The oil stain and impurities can be removed by using reagents such as absolute ethyl alcohol, acetone and the like; rust can be removed by using a rust remover or a rust preventive liquid; the knife blank can be dried at a temperature of less than 120 ℃ to remove water in the groove.
S2, preparing a coating inside the groove processed in the S1;
preferably, the technology for preparing a coating in S2 is as follows: a laser cladding technique, a plasma cladding technique, an arc additive manufacturing technique, a laser additive manufacturing technique, or an electron beam additive manufacturing technique. Preferably, the coating preparation technology of the embodiment selects laser additive manufacturing, laser cladding technology or ion cladding technology.
Preferably, the coating prepared in S2 is: an iron-based coating, a nickel-based coating, a cobalt-based coating, a metal-based composite coating, or a ceramic-based composite coating. Preferably, the coating is a ceramic matrix composite coating with excellent corrosion resistance, a metal matrix composite coating with high hardness and high wear resistance, or an iron-based coating with low cost and excellent performance.
Preferably, when a layer of coating is prepared in S2, the heat source processing position is positioned above the groove inclined plane 3, and a certain included angle is formed between the feeding direction of the heat source and the coating material and the vertical direction.
Preferably, the height H2> H1> H/2 of the coating, wherein H is the thickness of the cutter blank material, and H1 is the vertical distance between the plane of the groove and the upper surface of the cutter blank; h2 coating height; the coating width is greater than the horizontal dimension L of the groove plane. Under the condition of the parameter, when the coating is edged, the cutting edge can be ensured to have the high hardness of the coating and the high toughness of the cutter blank substrate.
Preferably, after the coating is prepared, corresponding heat treatment is carried out according to the coating material. It should be noted that the coating is in a metastable state of high temperature and rapid cooling after the preparation is completed: for some materials, the performance is best when the material is in a metastable state, for example, an alloy material added with molybdenum with a larger atomic number can play a role in solid solution strengthening when the material is rapidly cooled; however, some materials are best in steady state, such as some alloy materials added with titanium or niobium, and heat treatment is needed to precipitate stable strengthening phases to enhance the comprehensive properties of the materials. Therefore, before next edging, corresponding heat treatment can be carried out according to the strengthening theory of the coating material, so that the microstructure of the coating is more stable (steady state) and the comprehensive performance is more excellent.
Preferably, the raw material state for preparing the coating can be powder, wire, rod; or a combination thereof.
And S3, machining the cutting edge of the cutter blank with the coating prepared in the S2 to obtain a composite cutting edge.
Preferably, when the cutting edge of the coated blade blank is machined in S3, the machined cutting edge includes both the coating and the blade blank substrate, and the coating is formed at the foremost end of the cutting edge. Namely, the cutting edge angle must ensure that the cutting edge of the cutter simultaneously comprises a high-hardness coating and a high-toughness cutter blank substrate, and the foremost end of the cutting edge is a strengthening layer. The angle of attack varies depending on the actual thickness of the coating and the thickness of the blade blank.
Preferably, the knife manufactured by the method of the present invention includes but is not limited to: kitchen knives, outdoor knives, farm tool knives, ice skates, and the like.
As shown in fig. 1-10, to facilitate understanding of the present invention, the following examples are given:
example 1
Martensite stainless steel 1Cr13 is selected as a cutter blank 1 as a base material, and the thickness H is 5mm.
A punch press is used to machine a groove 2 between the upper surface 14 of the cutter blank and the cutting edge 12, wherein the included angle theta between the groove plane 4 and the groove inclined plane 3 is 150 degrees, the horizontal width L of the groove plane is 5mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 2mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank for 1 hour at 120 ℃ to remove the water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding laser cladding technology (a heat source 7 is laser, and a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above the groove inclined plane 3, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on 304 stainless steel powder, vanadium carbide hard particles and rare earth element cerium for 8 hours. After the preparation is finished, the composite coating 5 fills the gap of the groove, namely the width of the composite coating is larger than L (5 mm), and the height h2 is larger than h1 (3 mm).
The cutter blank coating is edged by a diamond grinding wheel, and is polished in a plurality of processes to obtain a cutting edge 6 consisting of a high-hardness foremost cutting edge coating 63, a high-hardness secondary foremost cutting edge coating material 61 and a high-toughness secondary foremost cutting edge base material 62. And the edging angle is 30 degrees, and the edging angle is symmetrical about the horizontal middle vertical plane of the knife blank.
After edging, the cutting edge is subjected to performance test according to the standard, the microhardness of the cutting edge of the cutter is 853HV, the sharpness of the cutting edge is 145, the durability is 687, and the corrosion resistance reaches P0 level (no rust).
Example 2
Martensite stainless steel 1Cr13 is selected as a cutter blank 1 as a base material, and the thickness H is 3mm.
A punch press is used to machine a groove 2 between the upper surface 14 of the cutter blank and the cutting edge 12, wherein the included angle theta between the groove plane 4 and the groove inclined plane 3 is 150 degrees, the horizontal width L of the groove plane is 5mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 1mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank at 120 ℃ for 1 hour to remove water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding laser cladding technology (a heat source 7 is laser, and a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above the groove inclined plane 3, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on 304 stainless steel powder and titanium carbide hard particles for 4 hours. After the preparation is finished, the composite coating 5 fills the gap of the groove, namely the width of the composite coating is larger than L (5 mm), and the height h2 is larger than h1 (2 mm).
The cutter blank coating is edged by a diamond grinding wheel, and is polished in a plurality of processes to obtain a cutting edge 6 consisting of a high-hardness foremost cutting edge coating 63, a high-hardness secondary foremost cutting edge coating material 61 and a high-toughness secondary foremost cutting edge base material 62. And the sharpening angle is 30 degrees, and the sharpening angle is symmetrical about the horizontal mid-vertical plane of the knife blank.
After edging, the cutting edge is subjected to performance test according to the standard, the microhardness of the cutting edge of the cutter is 879HV, the sharpness of the cutting edge is 135, the durability is 653, and the corrosion resistance reaches P0 grade (no rust).
Example 3
Austenitic stainless steel 304 is selected as a cutter blank 1 as a base material, and the thickness H is 3mm.
A groove 2 is processed between the upper surface 14 of the cutter blank and the cutting edge part 12 by a punch press, wherein an included angle theta between a groove plane 4 and a groove inclined plane 3 is 135 degrees, the horizontal width L of the groove plane is 4mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 1mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank for 1 hour at 120 ℃ to remove the water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding laser cladding technology (a heat source 7 is laser, and a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above the groove inclined plane 3, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on 304 stainless steel powder and titanium carbide hard particles for 4 hours. After the preparation is finished, the composite coating 5 fills the gap of the groove, namely the width of the composite coating is larger than L (4 mm), and the height h2 is larger than h1 (2 mm).
The cutter blank coating is edged by a diamond grinding wheel, and is polished by a plurality of processes to obtain the cutting edge 6 consisting of a high-hardness foremost cutting edge coating 63, a high-hardness secondary foremost cutting edge coating material 61 and a high-toughness secondary foremost cutting edge base material 62. And the opening angle is 26 degrees, and the opening angle is symmetrical about the horizontal middle vertical plane of the knife blank.
After edging, the cutting edge is subjected to performance test according to the standard, the microhardness of the cutting edge of the cutter is 843HV, the sharpness of the cutting edge is 128, the durability is 625, and the corrosion resistance reaches P0 level (no rust).
Example 4
Austenitic stainless steel 304 is selected as a cutter blank 1 as a base material, and the thickness H is 5mm.
A punch press is used to machine a groove 2 between the upper surface 14 of the cutter blank and the cutting edge portion 12, wherein the included angle theta between the groove plane 4 and the groove inclined plane 3 is 120 degrees, the horizontal width L of the groove plane is 5mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 2mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank for 1 hour at 120 ℃ to remove the water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding plasma cladding technology (a heat source 7 is plasma, a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above the groove inclined plane 3, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on 316L stainless steel powder, titanium carbide hard particles, tungsten carbide and titanium carbonitride hard particles for 10 hours. After the preparation is finished, the composite coating 5 fills the gap of the groove, namely the width of the composite coating is larger than L (5 mm), and the height h2 is larger than h1 (3 mm).
The cutter blank coating is edged by a diamond grinding wheel, and is polished in a plurality of processes to obtain a cutting edge 6 consisting of a high-hardness foremost cutting edge coating 63, a high-hardness secondary foremost cutting edge coating material 61 and a high-toughness secondary foremost cutting edge base material 62. And the opening angle is 34 degrees, and the opening angle is symmetrical about the horizontal middle vertical plane of the knife blank.
After edging, the cutting edge is subjected to performance test according to the standard, the microhardness of the cutting edge of the cutter is 930HV, the sharpness of the cutting edge is 168, the durability is 776, and the corrosion resistance reaches P0 level (no rust).
Example 5
Austenitic stainless steel 304Cu is selected as a cutter blank 1 as a base material, and the thickness H is 3mm.
A groove 2 is machined between the upper surface 14 of the cutter blank and the cutting edge part 12 by a punch press, wherein an included angle theta between a groove plane 4 and a groove inclined plane 3 is 110 degrees, the horizontal width L of the groove plane is 6mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 1mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank for 1 hour at 120 ℃ to remove the water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding plasma cladding technology (a heat source 7 is plasma, a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above the groove inclined plane 3, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on cobalt-based alloy powder and titanium carbide hard particles for 4 hours. After the preparation is finished, the composite coating 5 fills the gap of the groove, namely the width of the composite coating is larger than L (6 mm), and the height h2 is larger than h1 (2 mm).
The cutter blank coating is edged by a diamond grinding wheel, and is polished by a plurality of working procedures to obtain the cutting edge 6 consisting of a high-hardness foremost cutting edge coating 63, a high-hardness secondary foremost cutting edge coating material 61 and a high-toughness secondary foremost cutting edge base material 62. And the opening angle is 28 degrees, and the opening angle is symmetrical about the horizontal middle vertical plane of the knife blank.
After edging, the cutting edge is subjected to performance test according to the standard, the microhardness of the cutting edge of the cutter is 830HV, the sharpness of the cutting edge is 129, the durability is 628, and the anti-corrosion performance reaches P0 level (no rust).
Comparative example 1
Austenitic stainless steel 304Cu is selected as a cutter blank 1 as a base material, and the thickness H is 3mm.
A groove 2 is machined between the upper surface 14 of the cutter blank and the cutting edge part 12 by a punch press, wherein an included angle theta between a groove plane 4 and a groove inclined plane 3 is 110 degrees, the horizontal width L of the groove plane is 6mm, and the vertical distance h between the groove plane 4 and the lower surface of the cutter blank is 1mm. And removing oil stains in the groove 2 by using absolute ethyl alcohol, and drying the cutter blank for 1 hour at 120 ℃ to remove the water on the surface of the cutter blank 1.
By utilizing an advanced coaxial powder feeding plasma cladding technology (a heat source 7 is plasma, a material 8 is in a powder state), an iron-based composite coating 9 is processed and prepared right above a groove plane 4, the coating material is powder, and the powder material is a composite material prepared by carrying out vacuum ball milling on cobalt-based alloy powder and titanium carbide hard particles for 4 hours. Because the plane of the groove is melted through by a heat source in the preparation process, the coating material cannot be formed, and the experiment fails.
In conclusion, the cutter cutting edge prepared by the method for strengthening the cutting edge integrates the high hardness of the high-performance coating and the high toughness of the cutter blank substrate, so that the layered composite material cutter cutting edge can be obtained, and the high-performance coating material is arranged at the forefront end of the cutting edge, so that the cutting sharpness and the durability are ensured. When the cutting edge is used for cutting, the sharpness and the durability can be ensured, and the high toughness of the cutting edge can be ensured. The composite cutting edge formed by combining the soft and hard materials in a layered manner can avoid the problem that the traditional coating cutter is easy to break. Compared with the method of directly cladding a strengthening coating on the cutting edge of the cutter blank (the height of the coating is limited by the thickness of the cutter blank), the coating prepared by the method can fill the whole groove, a high-temperature molten pool can be maximally spread, the prepared coating has wider width, and the cutting edge has larger height after edging, so that the durability of the cutting edge is more durable, and the service life of the cutter is longer.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. Although the invention has been described with reference to a number of illustrative examples thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, other uses will be apparent to those skilled in the art in view of variations and modifications in the subject matter incorporating the components and/or arrangement of the arrangement within the scope of the disclosure, drawings and claims hereof.
Claims (6)
1. A method of strengthening a cutting edge, comprising:
s1, processing a groove at the cutting edge of a cutter blank substrate; the vertical distance H between the plane of the groove and the lower surface of the knife blank is less than H/2, wherein H is the thickness of the knife blank material;
s2, preparing a coating inside the groove processed in the S1; the height H2 of the coating is more than H1 and more than H/2, wherein H is the thickness of a cutter blank material, and H1 is the vertical distance between the plane of the groove and the upper surface of the cutter blank; h2 is the coating height; the width of the coating is greater than the horizontal dimension L of the groove plane; the heat source processing position is positioned above the inclined plane of the groove, and a certain included angle is formed between the feeding direction of the heat source and the coating material and the vertical direction;
s3, machining the cutting edge of the cutter blank with the coating prepared in the step S2 to form a composite cutting edge; the processed cutting edge comprises a coating and a cutter blank substrate, and the foremost end of the cutting edge is the coating.
2. The blade strengthening method of claim 1, wherein the flutes in S1 include flute planes parallel to the lower surface of the blank and flute slopes having an angle with the flute planes.
3. The method of claim 2 wherein the flute ramp is angled in the range of 110-160 ° from the flute plane.
4. The blade edge strengthening method according to claim 1, wherein the technique for preparing a coating layer in S2 is as follows: a laser cladding technique, a plasma cladding technique, an arc additive manufacturing technique, a laser additive manufacturing technique, or an electron beam additive manufacturing technique.
5. The blade edge strengthening method according to claim 1, wherein the coating prepared in S2 is: an iron-based coating, a nickel-based coating, a cobalt-based coating, a metal-based composite coating, or a ceramic-based composite coating.
6. The method of claim 1, wherein the coating is heat treated according to the coating material after the coating is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174358.2A CN113913729B (en) | 2021-10-09 | 2021-10-09 | Blade strengthening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111174358.2A CN113913729B (en) | 2021-10-09 | 2021-10-09 | Blade strengthening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113913729A CN113913729A (en) | 2022-01-11 |
| CN113913729B true CN113913729B (en) | 2022-11-22 |
Family
ID=79238570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111174358.2A Active CN113913729B (en) | 2021-10-09 | 2021-10-09 | Blade strengthening method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113913729B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079234A (en) * | 1993-06-22 | 1995-01-13 | Retsu Gomi | End mill |
| CN2782269Y (en) * | 2005-05-23 | 2006-05-24 | 孙长志 | Combined lathe tool coated with nano strengthened coating on its cutter edge |
| KR20060079627A (en) * | 2005-01-03 | 2006-07-06 | 이양구 | Insert for a cutting tool |
| CN1805821A (en) * | 2003-06-17 | 2006-07-19 | 钴碳化钨硬质合金公司 | Coated cutting tool with brazed-in superhard blank |
| JP2011110654A (en) * | 2009-11-27 | 2011-06-09 | Kyocera Corp | Cutting tool for grooving |
| CN203390274U (en) * | 2013-08-02 | 2014-01-15 | 昆山欧思克精密工具有限公司 | High-speed double-edged milling cutter structure |
| CN104368860A (en) * | 2014-11-07 | 2015-02-25 | 常州市文每机械配件厂 | Three-edge tungsten steel forming tool |
| CN104802198A (en) * | 2015-05-08 | 2015-07-29 | 苏州阿诺精密切削技术股份有限公司 | Self-sharpening circular knife |
| CN107553069A (en) * | 2017-08-18 | 2018-01-09 | 天津修船技术研究所(中国船舶重工集团公司第六三三研究所) | A kind of manufacture method of cermet kitchen used knife tool |
| CN110976992A (en) * | 2019-12-13 | 2020-04-10 | 深圳精匠云创科技有限公司 | Cutting tool |
| CN111112656A (en) * | 2018-10-31 | 2020-05-08 | 廊坊西波尔钻石技术有限公司 | Alloy boring cutter and alloy boring cutter with coating |
| CN111945058A (en) * | 2020-06-30 | 2020-11-17 | 阳江市美珑美利刀具有限公司 | Kitchen cutter, alloy powder sprayed and welded on cutting edge of kitchen cutter and preparation method of alloy powder |
-
2021
- 2021-10-09 CN CN202111174358.2A patent/CN113913729B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079234A (en) * | 1993-06-22 | 1995-01-13 | Retsu Gomi | End mill |
| CN1805821A (en) * | 2003-06-17 | 2006-07-19 | 钴碳化钨硬质合金公司 | Coated cutting tool with brazed-in superhard blank |
| KR20060079627A (en) * | 2005-01-03 | 2006-07-06 | 이양구 | Insert for a cutting tool |
| CN2782269Y (en) * | 2005-05-23 | 2006-05-24 | 孙长志 | Combined lathe tool coated with nano strengthened coating on its cutter edge |
| JP2011110654A (en) * | 2009-11-27 | 2011-06-09 | Kyocera Corp | Cutting tool for grooving |
| CN203390274U (en) * | 2013-08-02 | 2014-01-15 | 昆山欧思克精密工具有限公司 | High-speed double-edged milling cutter structure |
| CN104368860A (en) * | 2014-11-07 | 2015-02-25 | 常州市文每机械配件厂 | Three-edge tungsten steel forming tool |
| CN104802198A (en) * | 2015-05-08 | 2015-07-29 | 苏州阿诺精密切削技术股份有限公司 | Self-sharpening circular knife |
| CN107553069A (en) * | 2017-08-18 | 2018-01-09 | 天津修船技术研究所(中国船舶重工集团公司第六三三研究所) | A kind of manufacture method of cermet kitchen used knife tool |
| CN111112656A (en) * | 2018-10-31 | 2020-05-08 | 廊坊西波尔钻石技术有限公司 | Alloy boring cutter and alloy boring cutter with coating |
| CN110976992A (en) * | 2019-12-13 | 2020-04-10 | 深圳精匠云创科技有限公司 | Cutting tool |
| CN111945058A (en) * | 2020-06-30 | 2020-11-17 | 阳江市美珑美利刀具有限公司 | Kitchen cutter, alloy powder sprayed and welded on cutting edge of kitchen cutter and preparation method of alloy powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113913729A (en) | 2022-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106119838B (en) | Cutter for strengthening cutting edge by laser cladding technology | |
| AU2018437433B2 (en) | Micro-textured cutter based on silicon brass structure and processing method and application thereof | |
| CN109604982B (en) | Machining process of tool with non-grinding edge | |
| CN105525230A (en) | Method for manufacturing cutting tools from high-speed W18Cr4Nb material | |
| CN103056393B (en) | Machining method through ceramic blades | |
| CN115094413A (en) | High-end pure titanium cutter based on laser cladding titanium alloy powder and preparation method thereof | |
| CN113770670B (en) | PCD end mill and processing method thereof | |
| CN113913729B (en) | Blade strengthening method | |
| CN110857469A (en) | Titanium alloy cutter cutting edge wear-resistant coating and preparation method thereof | |
| CN113637968A (en) | Self-sharpening cutting edge and manufacturing method thereof | |
| CN111497035A (en) | PCD cutter for realizing milling instead of grinding, preparation method and application thereof | |
| CN115874175B (en) | High-performance laser cladding alloy cutter and preparation method thereof | |
| CN110643807A (en) | Preparation method of micro-nano texture coating | |
| CN106378510B (en) | A kind of silver soldering processing method of four swords tungsten steel blade | |
| CN110640216A (en) | Cold saw circular saw blade manufacturing process | |
| CN106312488B (en) | A kind of tungsten steel blade of long life | |
| CA2864626C (en) | Method for producing cutting blades | |
| CN209664436U (en) | A kind of broaching tool | |
| CN201855956U (en) | Outer circular knife | |
| CN208600735U (en) | A kind of high-strength impact-resistant PCBN grooving cutter | |
| CN219464861U (en) | CNC multichannel groove simultaneous processing cutter | |
| CN109420779A (en) | A kind of PCBN blade of the asymmetric cutting edge structure of tool arc | |
| CN110394830A (en) | The processing method of cutter and the cutter | |
| CN201558995U (en) | Reamer for knuckle arm to ream | |
| CN201752773U (en) | Stainless steel semi-finishing rotatable cutter blade with chip breaker grooves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |