CN112059561A - Amorphous alloy kitchen knife and manufacturing method thereof - Google Patents
Amorphous alloy kitchen knife and manufacturing method thereof Download PDFInfo
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- CN112059561A CN112059561A CN202011032039.3A CN202011032039A CN112059561A CN 112059561 A CN112059561 A CN 112059561A CN 202011032039 A CN202011032039 A CN 202011032039A CN 112059561 A CN112059561 A CN 112059561A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B9/00—Blades for hand knives
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Abstract
The invention discloses an amorphous alloy kitchen knife which is made of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy; the amorphous alloy kitchen knife has the Vickers hardness of 450-3500 MPa, the yield strength of 1000-3500 MPa and the elastic limit of 2-3.5 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 3000 h with 500-3000 h. The invention has the advantages of high precision, high strength, high elasticity, high hardness, scratch resistance, corrosion resistance, good surface effect, sharpness and long service life. The invention also discloses a manufacturing method for the amorphous alloy kitchen knife.
Description
Technical Field
The invention belongs to the technical field of application of amorphous alloy (or metal glass), and particularly relates to an amorphous alloy kitchen knife and a manufacturing method thereof.
Background
The kitchen knife is an indispensable kitchen utensil in places such as families, restaurants and the like, and almost every family needs a good kitchen knife. The kitchen knife can be used in various ways, typical operations include cutting soft food materials by using a knife edge, or cracking hard food materials such as bones and the like by using a knife back, different using methods of different parts on the kitchen knife also contribute to performance requirements of different parts of the kitchen knife, the knife edge is required to be hard to ensure sharpness, and the knife back is required to have certain flexibility to adapt to collision with high-strength food materials and avoid cracking. In terms of materials, in the prior art, the kitchen knife is usually made of carbon steel or stainless steel, and the kitchen knife made of carbon steel or stainless steel has the disadvantages of low structural precision and insufficient sharpness, and also has the disadvantages of poor strength, elastic limit, hardness, scratch resistance, corrosion resistance and surface effect, thereby resulting in a short service life.
Disclosure of Invention
The invention aims to provide the amorphous alloy kitchen knife which has the advantages of high precision, high strength, high elasticity, high hardness, scratch resistance, corrosion resistance, good surface effect, sharpness and long service life, aiming at the defects in the prior art.
The second purpose of the invention is to provide the manufacturing method of the amorphous alloy kitchen knife which is easy to prepare, simple in process, high in production efficiency, low in production cost and suitable for large-scale production aiming at the defects in the prior art.
In order to achieve one of the above objects, the present invention is achieved by the following technical solutions.
The amorphous alloy kitchen knife is manufactured by adopting zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy.
The zirconium-based amorphous alloy comprises Zr-Al- (Cu/Ni) alloy, Zr-Al-Cu- (Ni/Ti/Fe) alloy, Zr-Al-Cu-Ni- (Ta/Nb/Co) alloy, Zr-Al-Cu-Fe- (Co/Ag) alloy, Zr-Ti-Al-Cu- (Ni/Be) alloy and Zr-Ti-Al-Cu-Fe-Ag alloy; the copper-based amorphous alloy comprises a Cu- (Zr/Hf) -Ti alloy, a Cu- (Zr/Hf) -Al alloy, a Cu-Ti-Hf- (Nb/Zr) alloy, a Cu-Zr-Al- (Y/Ag/Ti) alloy, a Cu-Zr-Ti- (Y/Be/In/Ni) alloy and a Cu-Zr-Ti-Ni- (Sn/Si/Nb) alloy; the iron-based amorphous alloy comprises Fe- (Ga/Cr) -Mo-C- (B/P) system alloy, Fe- (Cu/Ni/Co) -Nb-Si-B system alloy, Fe- (Cr, Ga) -Mo- (Er/Y/Dy/La) -C-B system alloy and Fe-Cr-Mo- (Ga/Al) -P-C-B-Si system alloy.
The amorphous alloy kitchen knife has the Vickers hardness of 450-3500 MPa, the yield strength of 1000-3500 MPa and the elastic limit of 2-3.5 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 3000 h with 500-5 ℃.
In order to achieve the second purpose, the invention is realized by the following technical scheme.
The manufacturing method of the amorphous alloy kitchen knife comprises the following steps:
(1) preparing the overall shape and contour of the kitchen knife: under the protection of a vacuum state or inert atmosphere, preparing the overall outline of the kitchen knife by utilizing an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy through a die-casting forming method, a suction casting forming method or a spray casting forming method;
(2) forming a knife edge part: the knife edge part is molded by a thermoplastic molding technology or a rapid discharge molding technology, so that air holes of the knife edge part are eliminated, and the amorphous alloy kitchen knife with greatly improved mechanical properties such as precision, strength and the like is obtained.
(3) Surface treatment: and carrying out roller grinding and/or magnetic grinding and/or wire drawing treatment and/or polishing treatment and/or sand blasting treatment and/or physical vapor deposition treatment and/or spraying treatment on the obtained amorphous alloy kitchen knife.
In the above technical solution, the overall profile of the kitchen knife in step (1) is prepared by: under the protection of vacuum state or inert atmosphere, the overall outline of the kitchen knife is prepared by utilizing an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy through a die-casting forming method, a suction casting forming method or a spray casting forming method, and the method comprises the following steps:
feeding: putting an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy into a feeding device of a vertical (or horizontal) die casting machine or a suction casting machine or a spray casting machine, and putting the alloy ingot into a feeding device with the vacuum degree of 10-1-10-3In a melting device of a torr vertical (or horizontal) die casting machine or a suction casting machine or a spray casting machine;
melting: melting the alloy ingot in the step I by using an induction heating or resistance heating or electric arc heating mode to form molten liquid, and achieving the purpose of fully and uniformly mixing the molten liquid by using a magnetic stirring technology, wherein the temperature of the molten liquid is 900-oC；
Pouring the molten soup obtained in the step II into a pouring gate sleeve of a kitchen knife mold, and then injecting the molten soup into the kitchen knife mold by a punch, wherein the speed of the punch is 0.1-6 m/s, and the temperature of the kitchen knife mold is 200-350-oC; in the pouring process, spraying inert atmosphere to the surface of the kitchen knife mold by using a spray gun so as to achieve the purpose of cleaning molten soup scraps on the surface of the kitchen knife mold;
cooling: cooling and forming the kitchen knife mold injected with the molten soup in the step three to obtain the amorphous alloy kitchen knife with the cooling speed of 100-106K/s, the cooling time is 10-30 s;
taking out the product: and (4) receiving the amorphous alloy kitchen knife ejected out of the kitchen knife mold by using the product taking-out device, and then conveying the amorphous alloy kitchen knife to a product outlet to obtain the amorphous alloy kitchen knife.
In the above technical solution, the step (2) of forming the blade portion comprises the following steps of: the method comprises the steps of manufacturing a knife edge mold capable of forming a knife edge part, heating the knife edge mold by using an induction coil or a resistance wire, touching the position of the knife edge part to be formed by using the knife edge mold, heating the position to be formed between the glass transition temperature and the crystallization temperature (a supercooled liquid phase region), applying pressure to the position of the knife edge part to be formed by using the knife edge mold, forming the knife edge part, and blowing nitrogen or inert gas with certain pressure to the knife edge part to cool the knife edge part, so that the forming of the knife edge part is completed.
In the above technical solution, the step (2) of forming the blade portion, and the step of forming the blade portion by the rapid discharge forming method specifically includes: manufacturing an electrode capable of forming a knife edge part, releasing electric energy stored in a capacitor through the electrode, heating the position of the knife edge part to be formed to a supercooling liquid phase region by using the electrode, applying pressure to the position of the knife edge part to be formed by using the electrode as a punch, forming the knife edge part, and blowing nitrogen or inert gas with certain pressure to the knife edge part to cool the knife edge part, thereby finishing the forming of the knife edge part.
In the technical scheme, the knife edge part is formed in the step (2), and in the process of forming the knife edge part of the kitchen knife by a thermoplastic forming method or a rapid discharge forming method, the pressure applied to the position of the knife edge part of the kitchen knife to be formed is 1-35 MPa; and blowing nitrogen or inert gas with the pressure of 0.1-6 Pa to the edge part of the kitchen knife to cool the edge part of the kitchen knife.
The invention has the following beneficial effects:
the amorphous alloy kitchen knife provided by the invention is manufactured by adopting the zirconium-based amorphous alloy, the titanium-based amorphous alloy, the copper-based amorphous alloy, the nickel-based amorphous alloy, the iron-based amorphous alloy, the platinum-based amorphous alloy or the palladium-based amorphous alloy, so that the manufactured amorphous alloy kitchen knife has the advantages of high precision, high strength, high elasticity, high hardness, scratch resistance, corrosion resistance, good surface effect, sharpness and long service life: wherein the amorphous alloy kitchen knife has the Vickers hardness of 450-3500 MPa, the yield strength of 1000-3500 MPa and the elastic limit of 2-3.5 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 500-3000 h.
Compared with a carbon steel or stainless steel kitchen knife, the amorphous alloy kitchen knife provided by the invention has the advantages of high precision, high strength, high elasticity, high hardness, scratch resistance, corrosion resistance, good surface effect, sharpness and long service life.
According to the manufacturing method of the amorphous alloy kitchen knife, the overall outline of the kitchen knife is prepared by utilizing the alloy ingot of the zirconium-based amorphous alloy, the titanium-based amorphous alloy, the copper-based amorphous alloy, the nickel-based amorphous alloy, the iron-based amorphous alloy, the platinum-based amorphous alloy or the palladium-based amorphous alloy through a die-casting forming method, a suction casting forming method or a spray casting forming method, and the manufacturing method has the advantages of die-casting, suction casting or spray casting net forming; in the process of vacuum die casting, suction casting, spray casting or die casting, suction casting or spray casting under the protection of inert atmosphere, because the zirconium-based amorphous alloy, the titanium-based amorphous alloy, the copper-based amorphous alloy, the nickel-based amorphous alloy, the iron-based amorphous alloy, the platinum-based amorphous alloy or the palladium-based amorphous alloy does not have a phase transition stage from liquid state to solid state, the water shrinkage rate of the zirconium-based amorphous alloy, the titanium-based amorphous alloy, the copper-based amorphous alloy, the nickel-based amorphous alloy, the iron-based amorphous alloy, the platinum-based amorphous alloy or the palladium-based amorphous alloy is very low (the water shrinkage rate is only about 0.17 percent), therefore, the alloy ingot of the zirconium-based amorphous alloy, the titanium-based amorphous alloy, the copper-based amorphous alloy, the nickel-based amorphous alloy, the iron-based amorphous alloy, the platinum-based amorphous alloy or the palladium-based amorphous alloy can be formed at one time, and a large amount of subsequent processing technology can be saved, and the method has the advantages of easy molding, simple preparation technology and suitability for large-scale production.
The invention provides a method for manufacturing an amorphous alloy kitchen knife, which comprises the steps of melting and forming molten soup under the protection of a vacuum state or inert atmosphere when an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy is used for preparing the amorphous alloy kitchen knife through a die-casting forming method, a suction casting forming method or a spray casting forming method under the protection of the vacuum state or inert atmosphere, generating a magnetic field by a multi-pole magnetic field arranged in forming equipment under the driving of a motor, and generating magnetic force by interaction between the magnetic field and metal liquid in a molten pool so as to push the metal liquid to do directional movement to play a role in stirring, wherein the stirring strength and the stirring angle are reasonably set, so that the compound stirring in the horizontal direction and the vertical direction can be obtained. The purpose of fully and uniformly mixing the molten soup is achieved through the magnetic stirring technology. In the past, the purpose of uniformly mixing is achieved by frequently cooling molten liquid, then turning over an alloy ingot up and down, then re-melting, and repeating for 3-5 times, which is time-consuming and labor-consuming; the invention achieves the purpose of fully and uniformly mixing the molten soup by utilizing the magnetic stirring technology, and the mode is more rapid and convenient.
Drawings
FIG. 1 is a process flow diagram of one embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages solved by the present invention more clearly apparent, the present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The inert atmosphere mentioned in the invention is one of helium, neon, argon, krypton or xenon.
Wherein the Vickers hardness is measured according to ASTM E92-82; the salt spray test of the present invention is measured according to ASTM B117-2011.
The invention is further explained with reference to the drawings.
Example 1
This example illustrates an amorphous alloy kitchen knife, wherein the amorphous alloy is Zr-Ti-Al-Cu-Fe-Ag zirconium-based amorphous alloy.
As shown in fig. 1, the manufacturing method of the amorphous alloy kitchen knife comprises the following steps:
(1) preparing the overall shape and contour of the kitchen knife: at a vacuum degree of 10-1Under the protection of a torr in a vacuum state, preparing the overall outline of the kitchen knife by a die-casting method by utilizing an alloy ingot of Zr-Ti-Al-Cu-Fe-Ag zirconium-based amorphous alloy, and specifically comprising the following steps of:
feeding: putting an alloy ingot of Zr-Ti-Al-Cu-Fe-Ag zirconium-based amorphous alloy into a feeding device of a vertical die casting machine, and putting the alloy ingot into a melting device of the vertical die casting machine by the feeding device; vacuum degree of vertical die casting machine is 10-1torr; in this embodiment, the Zr-Ti-Al-Cu-Fe-Ag system zirconium-based amorphous alloy ingot includes Zr metal, Ti metal, Al metal, Cu metal, Fe metal, and Ag metal, and the purities of the Zr metal, the Ti metal, the Al metal, the Cu metal, the Fe metal, and the Ag metal are all 99% or more.
Melting: heating the alloy ingot in the step I in an arc heating mode at the vacuum degree of 10-1Melting and forming molten soup under a torr, and performing magnetic stirring technology to obtain molten liquidThe purpose of fully and uniformly mixing the soup is that the temperature of the melting soup is 1200 DEGoC；
③ pouring the soup: pouring the molten soup obtained in the second step into a pouring gate sleeve of a kitchen knife mold, and then injecting the molten soup into the kitchen knife mold by using a punch, wherein the speed of the punch is 2 m/s, and the temperature of the kitchen knife mold is 250oC; in the pouring process, a spray gun is used for spraying argon gas to the surface of the kitchen knife mold so as to achieve the purpose of cleaning molten soup scraps on the surface of the kitchen knife mold;
cooling: cooling and forming the kitchen knife mold injected with the molten soup in the step three to obtain the amorphous alloy kitchen knife with the cooling speed of 106K/s, the cooling time is 10 s;
taking out the product: and (3) the product taking-out device is used for receiving the amorphous alloy kitchen knife ejected out of the kitchen knife mold and then conveying the amorphous alloy kitchen knife to a product outlet to obtain the overall outline of the amorphous alloy kitchen knife. In this embodiment, the overall profile of the kitchen knife has a thickness of 2.5 mm.
Sixthly, cutting the casting opening and the overflow opening of the amorphous alloy kitchen knife obtained in the fifth step.
(2) Forming a knife edge part of the kitchen knife: the knife edge part is molded by a thermoplastic molding method, and the method comprises the following specific steps: manufacturing a knife edge mold capable of forming a knife edge part of a kitchen knife, heating the knife edge mold by using a resistance wire, applying 35 MPa pressure to the position of the knife edge part of the kitchen knife to be formed by using the knife edge mold after the knife edge mold touches the position of the knife tooth part of the kitchen knife to be formed and heating the knife tooth part to a supercooling liquid phase region, forming the knife edge part of the kitchen knife, and blowing argon gas with the pressure of 6 Pa to the knife edge part of the kitchen knife to cool the knife edge part of the kitchen knife, namely finishing the forming of the knife edge part of the kitchen knife to obtain the amorphous alloy kitchen knife;
(3) surface treatment: and (3) carrying out magnetic grinding and mirror polishing treatment on the amorphous alloy kitchen knife obtained in the step (2).
The amorphous alloy kitchen knife prepared in the embodiment has the Vickers hardness of 500, the yield strength of 1800 MPa and the elastic limit of 2.2 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 2300 h.
Example 2
This example is used to illustrate an amorphous alloy kitchen knife, and the amorphous alloy used is Cu-Zr-Ti-Ni-Si based copper-based amorphous alloy.
As shown in fig. 1, the manufacturing method of the amorphous alloy kitchen knife comprises the following steps:
(1) preparing the overall shape and contour of the kitchen knife: under the protection of helium, preparing the overall outline of the kitchen knife by using an alloy ingot of Cu-Zr-Ti-Ni-Si series copper-based amorphous alloy through a suction casting forming method, and specifically comprising the following steps:
feeding: putting an alloy ingot of the Cu-Zr-Ti-Ni-Si series copper-based amorphous alloy into a feeding device of a vertical suction casting machine, and putting the alloy ingot into a melting device of the vertical suction casting machine by the feeding device; in the embodiment, helium is filled into the vertical suction casting machine for protection; in this embodiment, the alloy ingot of the Cu-Zr-Ti-Ni-Si based copper-based amorphous alloy includes Cu metal, Zr metal, Ti metal, Ni metal, and Si nonmetal, and the purities of the Cu metal, Zr metal, Ti metal, Ni metal, and Si nonmetal are all 99% or more.
Melting: melting the alloy ingot in the step I under the protection of helium by using a resistance heating mode to form molten soup, and achieving the purpose of fully and uniformly mixing the molten soup by using a magnetic stirring technology, wherein the temperature of the molten soup is 1050oC；
③ pouring the soup: pouring the molten soup obtained in the second step into a pouring gate sleeve of a kitchen knife mold, and then injecting the molten soup into the kitchen knife mold by using a punch, wherein the speed of the punch is 4 m/s, and the temperature of the kitchen knife mold is 220oC; in the soup pouring process, spraying helium gas to the surface of the kitchen knife mold by using a spray gun to achieve the purpose of cleaning molten soup scraps on the surface of the kitchen knife mold;
cooling: cooling and forming the kitchen knife mold injected with the molten soup in the step three to obtain the amorphous alloy kitchen knife with the cooling speed of 104K/s, the cooling time is 18 s;
taking out the product: and (3) the product taking-out device is used for receiving the amorphous alloy kitchen knife ejected out of the kitchen knife mold and then conveying the amorphous alloy kitchen knife to a product outlet to obtain the overall outline of the amorphous alloy kitchen knife. In this embodiment, the thickness of the overall profile of the kitchen knife is 2 mm.
Sixthly, cutting the casting opening and the overflow opening of the amorphous alloy kitchen knife obtained in the fifth step.
(2) Forming a knife edge part of the kitchen knife: the knife edge part is molded by a thermoplastic molding method, and the method comprises the following specific steps: manufacturing a knife edge mold capable of forming a knife edge part of a kitchen knife, heating the knife edge mold by using an induction coil, applying pressure of 25 MPa to the position of the knife edge part of the kitchen knife to be formed by using the knife edge mold after the knife edge mold touches the position of the knife tooth part of the kitchen knife to be formed and heating the knife tooth part to a supercooling liquid phase region, forming the knife edge part of the kitchen knife, and then blowing helium gas with the pressure of 3 Pa to the knife edge part of the kitchen knife to cool the knife edge part of the kitchen knife, namely finishing the forming of the knife edge part of the kitchen knife to obtain the amorphous alloy kitchen knife;
(3) surface treatment: and (3) carrying out magnetic grinding and sand blasting treatment on the amorphous alloy kitchen knife obtained in the step (2).
The amorphous alloy kitchen knife prepared in the embodiment has the Vickers hardness of 580, the yield strength of 2000 MPa and the elasticity limit of 2.5 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 1500 hours.
Example 3
This example illustrates an amorphous alloy kitchen knife, in which the amorphous alloy used is Fe-Cr-Mo-Al-P-C-B-Si series Fe-based amorphous alloy.
As shown in fig. 1, the manufacturing method of the amorphous alloy kitchen knife comprises the following steps:
(1) preparing the overall shape and contour of the kitchen knife: under the protection of neon, preparing the overall outline of the kitchen knife by using an alloy ingot of Fe-Cr-Mo-Al-P-C-B-Si series iron-based amorphous alloy through a spray casting forming method, and specifically comprising the following steps of:
feeding: putting an alloy ingot of Fe-Cr-Mo-Al-P-C-B-Si series iron-based amorphous alloy into a feeding device of a horizontal spray casting machine, and putting the alloy ingot into a melting device of the horizontal spray casting machine by the feeding device; in the embodiment, the horizontal spray casting machine is filled with neon for protection; in this example, the alloy ingot of Fe-Cr-Mo-Al-P-C-B-Si based iron-based amorphous alloy includes Fe metal, Cr metal, Mo metal, Al metal, nonmetal P, nonmetal C, nonmetal B, and nonmetal Si, and the purity of Fe metal, Cr metal, Mo metal, Al metal, nonmetal P, nonmetal C, nonmetal B, and nonmetal Si is 99% or more.
Melting: melting the alloy ingot in the step I under the protection of neon gas by using an induction heating mode to form molten soup, and achieving the purpose of fully and uniformly mixing the molten soup by using a magnetic stirring technology, wherein the temperature of the molten soup is 1250oC；
③ pouring the soup: pouring the molten soup obtained in the second step into a pouring gate sleeve of a kitchen knife mold, and then injecting the molten soup into the kitchen knife mold by using a punch, wherein the speed of the punch is 1 m/s, and the temperature of the kitchen knife mold is 300oC; in the pouring process, a spray gun is used for spraying neon gas to the surface of the kitchen knife mold so as to achieve the purpose of cleaning molten soup scraps on the surface of the ice skate mold;
cooling: cooling and forming the kitchen knife mold injected with the molten soup in the step three to obtain the amorphous alloy kitchen knife with the cooling speed of 102K/s, the cooling time is 25 s;
taking out the product: and (3) the product taking-out device is used for receiving the amorphous alloy kitchen knife ejected out of the kitchen knife mold and then conveying the amorphous alloy kitchen knife to a product outlet to obtain the overall outline of the amorphous alloy kitchen knife. In this embodiment, the thickness of the overall profile of the kitchen knife is 1.5 mm.
Sixthly, cutting the casting opening and the overflow opening of the amorphous alloy kitchen knife obtained in the fifth step.
(2) Forming a knife edge part of the kitchen knife: the knife edge part is formed by a rapid discharge forming method, and the method comprises the following specific steps: manufacturing an electrode capable of forming a knife edge part of the kitchen knife, releasing electric energy stored in a capacitor through the electrode, heating the position of the knife edge part of the kitchen knife to be formed to a supercooling liquid phase region by using the electrode, applying 1 MPa pressure to the position of the knife edge part of the kitchen knife to be formed by using the electrode as a punch, forming the knife edge part of the kitchen knife, blowing neon gas with the pressure of 0.1 Pa to the knife edge part of the kitchen knife to cool the knife edge part of the kitchen knife, and thus finishing the forming of the knife edge part of the kitchen knife to obtain the amorphous alloy kitchen knife;
(3) surface treatment: and (3) carrying out roller grinding and sand blasting treatment on the amorphous alloy kitchen knife obtained in the step (2).
The amorphous alloy kitchen knife prepared in the embodiment has the Vickers hardness of 650, the yield strength of 2800 MPa and the elastic limit of 2.1 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 900 hours.
The amorphous alloy kitchen knife and the manufacturing method thereof provided by the embodiment of the invention are described in detail, the principle and the embodiment of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping understanding the technical scheme disclosed by the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. An amorphous alloy kitchen knife is characterized in that: the kitchen knife is an amorphous alloy kitchen knife manufactured by adopting zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy.
2. The amorphous alloy kitchen knife according to claim 1, characterized in that: the zirconium-based amorphous alloy comprises Zr-Al- (Cu/Ni) alloy, Zr-Al-Cu- (Ni/Ti/Fe) alloy, Zr-Al-Cu-Ni- (Ta/Nb/Co) alloy, Zr-Al-Cu-Fe- (Co/Ag) alloy, Zr-Ti-Al-Cu- (Ni/Be) alloy and Zr-Ti-Al-Cu-Fe-Ag alloy; the copper-based amorphous alloy comprises a Cu- (Zr/Hf) -Ti alloy, a Cu- (Zr/Hf) -Al alloy, a Cu-Ti-Hf- (Nb/Zr) alloy, a Cu-Zr-Al- (Y/Ag/Ti) alloy, a Cu-Zr-Ti- (Y/Be/In/Ni) alloy and a Cu-Zr-Ti-Ni- (Sn/Si/Nb) alloy; the iron-based amorphous alloy comprises Fe- (Ga/Cr) -Mo-C- (B/P) system alloy, Fe- (Cu/Ni/Co) -Nb-Si-B system alloy, Fe- (Cr, Ga) -Mo- (Er/Y/Dy/La) -C-B system alloy and Fe-Cr-Mo- (Ga/Al) -P-C-B-Si system alloy.
3. The amorphous alloy kitchen knife according to claim 1, characterized in that: the amorphous alloy kitchen knife has the Vickers hardness of 450-3500 MPa, the yield strength of 1000-3500 MPa and the elastic limit of 2-3.5 percent, and the surface of the amorphous alloy kitchen knife is still good and free of corrosion after being subjected to a salt spray test for 3000 h with 500-5 ℃.
4. A method for manufacturing the amorphous alloy kitchen knife as claimed in any one of claims 1 to 3, characterized in that: the method comprises the following steps:
(1) preparing the overall shape and contour of the kitchen knife: under the protection of a vacuum state or inert atmosphere, preparing the overall outline of the kitchen knife by utilizing an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy through a die-casting forming method, a suction casting forming method or a spray casting forming method;
(2) forming a knife edge part: the knife edge part is molded by a thermoplastic molding technology or a rapid discharge molding technology, so that air holes of the knife edge part are eliminated, and the amorphous alloy kitchen knife with greatly improved mechanical properties such as precision, strength and the like is obtained.
(3) Surface treatment: and carrying out roller grinding and/or magnetic grinding and/or wire drawing treatment and/or polishing treatment and/or sand blasting treatment and/or physical vapor deposition treatment and/or spraying treatment on the obtained amorphous alloy kitchen knife.
5. The method for manufacturing the amorphous alloy kitchen knife as claimed in claim 4, wherein: the preparation of the overall shape and contour of the kitchen knife in the step (1) is as follows: under the protection of vacuum state or inert atmosphere, the overall outline of the kitchen knife is prepared by utilizing an alloy ingot of zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy, iron-based amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy through a die-casting forming method, a suction casting forming method or a spray casting forming method, and the method comprises the following steps:
feeding: zirconium-based amorphous alloy, titanium-based amorphous alloy, copper-based amorphous alloy, nickel-based amorphous alloy and iron-based amorphous alloyPutting an alloy ingot of amorphous alloy, platinum-based amorphous alloy or palladium-based amorphous alloy into a feeding device of a vertical (or horizontal) die casting machine or a suction casting machine or a spray casting machine, and feeding the alloy ingot into a vacuum degree of 10 by the feeding device-1-10-3In a melting device of a torr vertical (or horizontal) die casting machine or a suction casting machine or a spray casting machine;
melting: melting the alloy ingot in the step I by using an induction heating or resistance heating or electric arc heating mode to form molten liquid, and achieving the purpose of fully and uniformly mixing the molten liquid by using a magnetic stirring technology, wherein the temperature of the molten liquid is 900-oC；
Pouring the molten soup obtained in the step II into a pouring gate sleeve of a kitchen knife mold, and then injecting the molten soup into the kitchen knife mold by a punch, wherein the speed of the punch is 0.1-6 m/s, and the temperature of the kitchen knife mold is 200-350-oC; in the pouring process, spraying inert atmosphere to the surface of the kitchen knife mold by using a spray gun so as to achieve the purpose of cleaning molten soup scraps on the surface of the kitchen knife mold;
cooling: cooling and forming the kitchen knife mold injected with the molten soup in the step three to obtain the amorphous alloy kitchen knife with the cooling speed of 100-106K/s, the cooling time is 10-30 s;
taking out the product: and (4) receiving the amorphous alloy kitchen knife ejected out of the kitchen knife mold by using the product taking-out device, and then conveying the amorphous alloy kitchen knife to a product outlet to obtain the amorphous alloy kitchen knife.
6. The method for manufacturing the amorphous alloy kitchen knife as claimed in claim 4, wherein: the step (2) of forming the knife edge part, wherein the specific steps of forming the knife edge part by a thermoplastic forming method are as follows: the method comprises the steps of manufacturing a knife edge mold capable of forming a knife edge part, heating the knife edge mold by using an induction coil or a resistance wire, touching the position of the knife edge part to be formed by using the knife edge mold, heating the position to be formed between the glass transition temperature and the crystallization temperature (a supercooled liquid phase region), applying pressure to the position of the knife edge part to be formed by using the knife edge mold, forming the knife edge part, and blowing nitrogen or inert gas with certain pressure to the knife edge part to cool the knife edge part, so that the forming of the knife edge part is completed.
7. The method for manufacturing the amorphous alloy kitchen knife as claimed in claim 4, wherein: the step (2) of forming the knife edge part, wherein the specific steps of forming the knife edge part by a rapid discharge forming method are as follows: manufacturing an electrode capable of forming a knife edge part, releasing electric energy stored in a capacitor through the electrode, heating the position of the knife edge part to be formed to a supercooling liquid phase region by using the electrode, applying pressure to the position of the knife edge part to be formed by using the electrode as a punch, forming the knife edge part, and blowing nitrogen or inert gas with certain pressure to the knife edge part to cool the knife edge part, thereby finishing the forming of the knife edge part.
8. The method for manufacturing the amorphous alloy kitchen knife as claimed in claim 4, wherein: the step (2) is to form the knife edge part, and in the process of forming the knife edge part of the kitchen knife by a thermoplastic forming method or a rapid discharge forming method, the pressure applied to the position of the knife edge part of the kitchen knife to be formed is 1-35 MPa; and blowing nitrogen or inert gas with the pressure of 0.1-6 Pa to the edge part of the kitchen knife to cool the edge part of the kitchen knife.
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| CN115138819A (en) * | 2021-09-08 | 2022-10-04 | 武汉苏泊尔炊具有限公司 | Non-stick pan and preparation method thereof |
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