Titanium kitchen knife

Abstract

The utility model discloses a titanium kitchen knife, which relates to the technical field of knives and comprises a knife body and a knife edge arranged at one end of the knife body, the knife edge comprises a knife core and a nitriding layer arranged on the outer surface of the knife core, and the hardness of the knife core is smaller than that of the nitriding layer. The utility model has the advantages of long service life and low production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchenware, in particular to a titanium kitchen knife. Background Art

[0002] Knives are essential items for people's daily life. They are generally composed of a knife body and a knife handle. Titanium kitchen knives are knives made of titanium or titanium alloy. Titanium kitchen knives have good biocompatibility and corrosion resistance, so they are widely used in table knives, surgical knives, kitchen knives and other fields.

[0003] However, the hardness of titanium and titanium alloys is relatively low. The hardness and sharpness of knives made directly from pure titanium or titanium alloy materials do not meet the standard requirements for knives.

[0004] In the related art, in order to increase the strength of titanium kitchen knives, hard alloy powder is generally thermally sprayed on the surface of the knife, or a high-hardness cladding layer is formed on the surface of the knife using plasma cladding of ceramic powder, etc., to improve the strength of the titanium kitchen knife (especially the blade area). However, these methods are complex and costly, and the resulting blade has low toughness and is prone to chipping. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a titanium kitchen knife with the advantages of long service life and low production cost.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A titanium kitchen knife comprises a knife body and a blade arranged at one end of the knife body, wherein the blade comprises a blade core and a nitride layer arranged on the outer surface of the blade core, and the hardness of the blade core is less than the hardness of the nitride layer.

[0008] In the present application, the knife body and the blade are made of titanium material. Titanium metal has excellent corrosion resistance and good biocompatibility. It will not react chemically with food when used as a kitchen utensil, thus ensuring the safety of food. In addition, the titanium material has a low density, which makes the knife lightweight and easy to operate and use. However, the hardness of titanium material is relatively poor, so the present application provides a nitride layer on the outer surface of the blade core. The hardness of the nitride layer is greater than the hardness of the blade core, which can improve the hardness and wear resistance of the blade, extend the service life of the knife and improve cutting efficiency. In addition, the manufacturing process of the nitride layer is simple and the production cost is low.

[0009] Optionally, the thickness of the nitride layer is 500-1000 μm.

[0010] Optionally, the nitride layer is a titanium nitride film or a titanium nitride carbide film formed by laser nitriding the outer surface of the blade core.

[0011] Optionally, the hardness of the nitride layer is HV800-1200.

[0012] Optionally, the blade core and the blade body are both made of titanium alloy sheets.

[0013] Optionally, the end of the blade away from the blade body is configured to be arc-shaped, sawtooth-shaped or wavy.

[0014] Optionally, a slope extending toward the blade is formed at the end of the blade body, and an angle between the slope and the blade is less than 90°.

[0015] Optionally, the thickness of the blade body gradually decreases in a direction approaching the blade.

[0016] Optionally, one end of the blade body away from the blade is configured to be in a straight line shape.

[0017] Optionally, the titanium kitchen knife further comprises a handle, wherein the handle comprises a gripping end and a connecting end connected to the knife body, and in a direction in which the gripping end moves away from the knife body, a width of the gripping end gradually increases.

[0018] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0021] Among them, 1. blade body; 2. blade; 21. nitride layer; 3. handle; 31. gripping end; 32. connecting end. DETAILED DESCRIPTION

[0022] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0023] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0024] Example:

[0025] like Figure 1 As shown, this embodiment provides a titanium kitchen knife, including a knife body 1 and a blade 2 arranged at one end of the knife body 1, the blade 2 includes a blade core and a nitride layer 21 arranged on the outer surface of the blade core, and the hardness of the blade core is less than the hardness of the nitride layer 21.

[0026] In this embodiment, a titanium kitchen knife is provided. The material of the titanium kitchen knife can be titanium or titanium alloy, that is, the material of the knife body 1 and the blade 2 can be titanium or titanium alloy. The titanium kitchen knife includes a knife body 1 as the main body of the knife and a blade 2 for performing cutting tasks, and the blade 2 is arranged on one side of the knife body 1. Specifically, in this embodiment, the blade 2 is arranged below the knife body 1. The user applies force to the knife body 1 to make the blade 2 perform the cutting task. Under the combined action of the weight of the knife body 1 and the external force, the cutting efficiency of the blade 2 is higher. In this embodiment, the blade 2 includes a blade core, which serves as the base of the nitride layer 21 and has good machining performance and thermal stability to ensure that the nitride layer 21 can be evenly and densely formed on its surface. The nitride layer 21 can also improve the non-stick performance of the knife. In this embodiment, the knife body 1 and the blade 2 are both made of titanium material. Titanium metal has excellent corrosion resistance and good biocompatibility. When used as a kitchen utensil, it will not react chemically with food, ensuring the safety of food. In addition, titanium material has low density, which makes the tool lightweight and easy to operate and use. However, titanium material has poor hardness, so in this embodiment, the outer surface of the blade core is provided with a nitride layer 21, and the hardness of the nitride layer 21 is greater than the hardness of the blade 2, which can improve the hardness and wear resistance of the blade 2, extend the service life of the tool and improve the cutting efficiency.

[0027] The thickness of the nitride layer 21 is 500 to 1000 μm.

[0028] When the thickness of the nitride layer 21 is less than 500 μm, it is too thin to provide adequate protection, and when the thickness of the nitride layer 21 is greater than 1000 μm, it is too thick to add unnecessary weight and cost. At the same time, the nitride layer 21 within this thickness range can ensure that the tool can perform excellent performance under various cutting conditions.

[0029] Nitrogen atoms are infiltrated into the surface of the blade 2 under certain process conditions, and the nitrogen atoms are combined with titanium atoms to form a nitride layer 21, that is, the nitride layer 21 is not applied to the surface of the blade 2 like the high-hardness cladding layer in the related art, but the nitrogen atoms react with the titanium atoms to form a dense nitride layer 21, which improves the toughness of the blade 2, avoids unfavorable conditions such as chipping, and increases the service life of the tool. In addition, the process steps of thermally spraying cemented carbide powder or using plasma cladding ceramic powder to form a high-hardness cladding layer in the blade 2 area are relatively complicated and the production cost is relatively high. The production process of the nitride layer 21 in this embodiment is simple, the production cost is low, and the service life of the tool is longer.

[0030] In this embodiment, the blade 2 includes a blade core, which serves as the base of the nitride layer 21 and has good machining performance and thermal stability to ensure that the nitride layer 21 can be formed evenly and densely on its surface. The nitride layer 21 can also improve the non-stick performance of the tool.

[0031] The nitride layer 21 is a titanium nitride film or a titanium nitride carbide film formed by laser nitriding the outer surface of the blade core.

[0032] In the present embodiment, the nitride layer 21 is a titanium nitride film, and laser nitriding is to use a high-energy laser beam to heat the blade core in a nitrogen atmosphere, so that the nitrogen atoms diffuse rapidly at high temperature and react with the titanium atoms on the surface of the blade core to form a titanium nitride film. In other embodiments, the nitride layer 21 may also be a titanium nitride carbide film, that is, the blade core is heated by a high-energy laser beam in an atmosphere of a mixed gas of carbon dioxide and nitrogen. In addition, the tool may be first quenched to a certain hardness using a conventional quenching process, and then the blade 2 area may be hardened using a laser nitriding process. For tools made using laser nitriding technology, the outer surface hardness of the blade 2 is high, but the hardness of the blade core is relatively low, so it can be hard on the outside and soft on the inside, and have a certain toughness. Tools made using laser nitriding technology have higher hardness than tools obtained using conventional quenching processes, better effects, less investment, and better environmental protection.

[0033] The hardness of the nitride layer 21 is HV800-1200.

[0034] In this embodiment, the hardness of the nitride layer 21 is HV800-1200, which is equivalent to Rockwell hardness of HRC60-70. The nitride layer 21 has extremely high hardness, far exceeding many conventional metal materials, and can significantly improve the wear resistance and service life of the tool.

[0035] The blade core and the blade body 1 are both made of titanium alloy sheets.

[0036] In this embodiment, the blade core and the blade body 1 are both titanium alloy sheets, and the blade body 1 is formed integrally with the blade core. In other embodiments, the blade core and the blade body 1 may also be provided separately, or connected by welding or other processes. In addition, the blade core and the blade body 1 may also both be pure titanium metal sheets, or one of the blade core and the blade body 1 may be made of titanium alloy and the other of pure titanium.

[0037] The end of the blade 2 away from the blade body 1 is configured in an arc shape, a sawtooth shape or a wave shape.

[0038] In the present embodiment, the end of the blade 2 away from the blade body 1 is configured as a smooth arc, that is, the cutting portion of the blade 2 is configured as an arc. The arc-shaped blade 2 usually has a smooth curve, which is conducive to smooth cutting action, and can also reduce the resistance during the cutting process, making cutting easier and more efficient. In other embodiments, the blade 2 can also be configured as a serrated or wavy shape. The serrated blade 2 is composed of a series of sharp teeth that can produce a tearing effect during the cutting process, so that it is easier to penetrate and cut hard materials. The serrated blade 2 can also increase the roughness of the cutting surface. The wavy blade 2 combines the characteristics of the smooth and serrated blades 2, and has an undulating wavy profile, which can provide an additional cutting edge, thereby generating more cutting force during the cutting process and improving cutting efficiency.

[0039] A slope extending toward the blade 2 is formed at the end of the blade body 1, and the angle between the slope and the blade 2 is less than 90°.

[0040] In this embodiment, a slope extending toward the blade 2 is formed at the front end of the cutter body 1, and the angle formed between the slope and the blade 2 is less than 90°, so that the front end of the cutter body 1 has a sharp angle, so that the cutter can penetrate the material more easily during the cutting process. When the cutter cuts into the material, the slope will first contact the material, and due to its inclined angle, a forward component force will be generated, which helps to guide the blade 2 into the material, thereby reducing the cutting resistance. Since the angle between the slope and the blade 2 is less than 90°, the vertical downward force required for cutting can be dispersed to the slope, thereby reducing the force directly acting on the blade 2, helping to reduce the wear rate of the blade 2 and extending the service life of the cutter.

[0041] The thickness of the blade body 1 gradually decreases in the direction approaching the blade edge 2 .

[0042] In this embodiment, as the blade body 1 gradually becomes thinner toward the blade 2, the blade 2 portion becomes sharper and more concentrated, making it easier to penetrate and cut the material. This design reduces the force required during the cutting process and improves cutting efficiency. The gradually thinning blade body 1 design helps to produce a finer and smoother cutting surface. Because the thickness of the blade 2 portion is reduced, the chips generated during cutting are smaller, reducing the roughness and burrs of the cutting surface. By optimizing the transition area between the blade 2 and the blade body 1, stress concentration can be reduced and the overall durability of the tool can be improved. In other embodiments, the thickness of the blade body 1 can also be uniform.

[0043] One end of the blade body 1 away from the blade 2 is configured to be straight.

[0044] In this embodiment, the end of the blade body 1 away from the blade 2 (i.e., the blade back end) is constructed in a straight line. The straight blade back design can provide a larger support area, making the tool more stable during the cutting process, helping to reduce cutting errors caused by vibration or offset, and improving cutting accuracy. The straight blade back design is relatively simple and easier to machine or cast. At the same time, this design is also convenient for subsequent maintenance and repair work. In other embodiments, the end of the blade body 1 away from the blade 2 can also be designed to be curved or wavy, which is more aesthetically pleasing.

[0045] The titanium kitchen knife further comprises a handle 3 , which comprises a gripping end 31 and a connecting end 32 connected to the knife body 1 . In the direction in which the gripping end 31 is away from the knife body 1 , the width of the gripping end 31 gradually increases.

[0046] In this embodiment, the handle 3 and the blade body 1 are connected in a detachable manner, and the handle 3 includes a gripping end 31 and a connecting end 32. The width of the gripping end 31 gradually increases so that the user can place the palm and fingers more naturally when holding the knife. The wide gripping portion provides better support, reduces the slippage and discomfort of the hand during the cutting process, thereby enhancing the stability of the grip. The gripping end 31 with increased width can better adapt to palms of different sizes, allowing the user to hold the knife more comfortably, reducing the pressure on the hand when using the knife for a long time, and reducing hand fatigue and discomfort. Stable gripping not only helps to improve the accuracy and efficiency of cutting, but also reduces the risk of accidents. The wide gripping end 31 reduces the possibility of the knife slipping or losing control during the cutting process, thereby improving the safety during use. In other embodiments, the handle 3 and the blade body 1 can also be integrally formed.

[0047] The titanium kitchen knife in this embodiment can be used for kitchen cooking, such as being used as a chef's knife, a meat cleaver, etc., and can also be used for making handicrafts.

[0048] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A titanium kitchen knife, comprising a knife body (1) and a blade (2) disposed at one end of the knife body (1), characterized in that: The blade (2) comprises a blade core and a nitride layer (21) arranged on the outer surface of the blade core, and the hardness of the blade core is smaller than the hardness of the nitride layer (21).

2. The titanium kitchen knife according to claim 1, characterized in that: The thickness of the nitride layer (21) is 500-1000 μm.

3. The titanium kitchen knife according to claim 1, characterized in that: The nitride layer (21) is a titanium nitride film or a titanium carbonitride film formed by laser nitriding the outer surface of the blade core.

4. The titanium kitchen knife according to claim 1, characterized in that: The hardness of the nitride layer (21) is HV800-1200.

5. The titanium kitchen knife according to claim 1, characterized in that: The blade core and the blade body (1) are both titanium alloy sheets.

6. The titanium kitchen knife according to any one of claims 1 to 5, characterized in that: The end of the blade (2) away from the blade body (1) is configured to be arc-shaped, sawtooth-shaped or wavy.

7. The titanium kitchen knife according to any one of claims 1 to 5, characterized in that: The end of the blade body (1) is formed with a slope extending towards the blade (2), and the angle between the slope and the blade (2) is less than 90°.

8. The titanium kitchen knife according to any one of claims 1 to 5, characterized in that: The thickness of the blade body (1) gradually decreases in a direction approaching the blade (2).

9. The titanium kitchen knife according to any one of claims 1 to 5, characterized in that: The end of the knife body (1) away from the knife edge (2) is configured to be in a straight line shape.

10. The titanium kitchen knife according to any one of claims 1 to 5, characterized in that: The titanium kitchen knife further comprises a handle (3), wherein the handle (3) comprises a gripping end (31) and a connecting end (32) connected to the knife body (1), and the width of the gripping end (31) gradually increases in a direction in which the gripping end (31) moves away from the knife body (1).

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