CN115284337A - A kind of children's food supplement knife and scissors and preparation method thereof - Google Patents

Abstract

The invention provides a pair of children's assistant food scissors and a preparation method thereof, the children's assistant food scissors comprise two cutter bodies which are hinged with each other, wherein each cutter body is provided with a cutting edge and a cutter handle, the two cutter bodies are respectively provided with a shearing surface which is attached to each other and can rotate relatively, at least one cutting edge on each cutter body comprises an inclined surface and a small edge, the inclined surface is arranged on the surface of the cutter body opposite to the shearing surface, the inclined surface is arranged on one side of the two cutter bodies opposite to each other, the inclined surface is obliquely arranged relative to the shearing surface, the small edge is arranged on the inclined surface and is arranged on one side of the inclined surface close to the shearing surface, and the small edge comprises a plurality of fillet bulges arranged at intervals and an arc-shaped groove for connecting the two adjacent fillet bulges. The children's complementary food scissors can fix food in the shearing process, improve the stability of the shearing process, have good cutting performance and antibacterial performance, facilitate parents to shear the food and facilitate safe dining of children.

Description

Knife and scissors for children's complementary food and preparation method thereof

technical field

The invention relates to the field of daily necessities for children, in particular to a knife and scissors for children's complementary food and a preparation method thereof.

Background technique

High-energy beam coating technology is an important method of material surface modification. By adding coating materials on the surface of the substrate and using high-energy-density energy beams to treat the surface of the material and the substrate, the metallurgical combination of the coating material and the substrate is realized. It is a healthy and economical surface modification technology to obtain coatings with specific functional uses.

In daily life, for children, due to the large size of food, it is difficult to swallow, and it is easy to be stuck or choked by food, causing harm to the body.

Therefore, it is necessary to cut the food into small sections or small pieces during children's meal.

And in some cases, due to the slow eating speed of children and the time it takes for parents to cut and process food, the food may be contaminated with harmful bacteria during the cutting process, which will cause children to have diarrhea after eating , vomiting, etc.

Moreover, food supplement knives and scissors are prone to problems such as decreased sharpness and wear after frequent use.

Therefore, there is an urgent need for a children's food supplement knife and scissors that can quickly thin or break up long or large, inconvenient food, and have good cutting performance and antibacterial performance.

Contents of the invention

The object of the present invention is to provide a children's food supplement knife and scissors and a preparation method thereof.

The children's complementary food knife and scissors of the present invention comprise two mutually hinged knife bodies, and a blade and a knife handle are provided on the knife bodies, wherein, the two knife bodies all have shearing surfaces that are attached and can rotate relative to each other. It is characterized in that at least one blade on the cutter body includes an inclined surface (3) and a small edge (4), wherein the inclined surface (3) is set on the side of the cutter body opposite to the shearing surface, and The inclined surface (3) is located on the opposite side of the two cutter bodies, and the inclined surface (3) is arranged obliquely relative to the shearing surface; the small edge (4) is arranged on the inclined surface ( 3) and located on the side of the inclined surface (3) close to the shearing surface, the small blade (4) includes a plurality of rounded protrusions (5) arranged at intervals and connecting two adjacent The arc-shaped groove (6) of the above-mentioned rounded protrusion (5).

In some embodiments, the knife handle is fixedly installed at one end of the knife body, and the knife handle is provided with a handle through hole (7).

In some embodiments, the inclination angle between the inclined surface (3) and the shearing surface is 5°-45°.

In some embodiments, the small edge (4) is arranged obliquely relative to the shearing surface, and the included angle between the small edge (4) and the shearing surface is 45°-90°.

In some embodiments, the projected width of the small edge (4) on the inclined surface (3) is greater than zero and less than or equal to two-thirds of the projected width of the inclined surface (3).

In some embodiments, the arc-shaped diameter of the arc-shaped groove (6) is less than or equal to 2mm, and the rounded corner diameter of the rounded protrusion (5) is smaller than or equal to the arc-shaped groove (6) The arc diameter, the height of the rounded protrusion (5) is less than or equal to 4mm.

In some embodiments, the knife body is made of antimicrobial stainless steel.

In some embodiments, the thickness of the cutter body is 2.0mm-4.5mm.

In some embodiments, the antibacterial alloy coating is clad on the blades.

The present invention also provides a preparation method of the above children's complementary food knife and scissors, the preparation method comprising the following steps:

S1. Pretreating the cutter body blank, preparing a chute on the cutter body blank, preparing a zigzag groove on the chute, and preparing a powder storage groove on the zigzag groove;

S2. Put the cemented carbide powder in the powder storage tank, and prepare the coating by coaxial powder feeding with a high-energy beam;

S3. Sharpen the coated cutter body, prepare the bevel (3) and the small blade (4), and install the handle (7) after grinding.

In some embodiments, the powder storage tank is rectangular, triangular or U-shaped.

In some embodiments, the powder storage tank is rectangular.

In some embodiments, the powder storage tank is U-shaped.

In some embodiments, the particle size range of the cemented carbide powder is 15 μm-245 μm, the cemented carbide powder is composed of a TiC strengthening phase and an antibacterial alloy matrix, and the mass percentage of the antibacterial alloy matrix is 5%-100%, so The mass percentage of the TiC strengthening phase is 0%-95%.

In some embodiments, the mass percentage of the antibacterial alloy matrix is 50%-80%, and the mass percentage of the TiC strengthening phase is 20%-50%.

In some embodiments, the mass percentage of the antibacterial alloy matrix is 60%-70%, and the mass percentage of the TiC strengthening phase is 30%-40%.

In some embodiments, the composition of the antibacterial alloy matrix is Cr: 10%-20%, Nb: 0.01%-2.5%, Mo: 0.1%-5.5%, Al: 0.1%-0.5%, C : 0.05%-0.65%, Si: 0.01%-0.5%, Mn: 0.01%-0.5%, V: 0.05%-2.5%, Ni: 0.5%-2.5%, Ag≤0.15%, S≤0.002%, P ≤0.025%, the rest is Fe and unavoidable impurities.

In some embodiments, the antibacterial alloy matrix is composed of Cr: 17.52%, Nb: 1.55%, Mo: 0.51%, Al: 0.15%, C: 0.53%, Si: 0.1%, Mn: 0.5%, V: 2%, Ni: 1%, Ag: 0.05%, S: 0.001%, P: 0.012%, and the balance is Fe and unavoidable impurities.

In some embodiments, the high-energy beam includes a laser beam, a plasma beam, or a composite high-energy beam of laser and plasma.

In some embodiments, the high energy beam is a laser beam.

In some embodiments, the process parameters corresponding to the laser beam are: laser power 1200-1400W, spot diameter 2-4mm, cladding speed 3-6mm/s, defocus amount 12-15mm, powder feeder gas capacity 3 -5MPa, powder pan speed 1-3r/min.

The children's food supplement knife and scissors provided by the present invention can fix the food during the cutting process through the design of the inclined surface and the small blade, prevent the food from slipping, improve the stability of the cutting process, and improve the shearing and cutting of the children's food supplement knife and scissors The performance makes the children's complementary food knives and scissors more advantageous in cutting fiber food, and meets the needs of parents for the convenience and labor-saving of children's complementary food knives and scissors; the coating on the blade improves the hardness and wear resistance of children's complementary food knives and scissors, and at the same time It also has a good antibacterial effect to ensure the safety of children's meals.

Description of drawings

Fig. 1 is a schematic structural view of children's food supplement knife and scissors in one or more embodiments of the present invention.

Fig. 2 is a perspective view of a partial structure of a blade in one or more embodiments of the present invention.

Fig. 3 is an orthographic view of a partial structure of a blade in one or more embodiments of the present invention.

FIG. 4 is a schematic cross-sectional view along direction A in FIG. 2 .

Fig. 5 is a schematic diagram of the structure of a small blade in one or more embodiments of the present invention.

Fig. 6 is a flow chart of the preparation of children's food supplement knife and scissors according to the present invention.

Fig. 7 is a schematic structural view of the powder storage tank of the present invention.

Fig. 8 is a schematic diagram of the composition of the cemented carbide powder in Example 1 of the present invention.

Fig. 9 is a schematic diagram of the composition of the cemented carbide powder in Example 2 of the present invention.

Fig. 10 is the test result report of the cemented carbide powder particle size in Example 1 of the present invention.

Fig. 11 is the test result report of the cemented carbide powder particle size in Example 2 of the present invention.

Fig. 12 is a metallographic structure diagram of the coating in Example 1 of the present invention.

Fig. 13 is a metallographic structure diagram of the coating in Example 2 of the present invention.

Fig. 14 is the antibacterial test result report of Example 2 of the present invention.

Fig. 15 is a test result report of the salt spray test of Example 2 of the present invention.

Fig. 16 is a test result report of the sharpness test of Example 2 of the present invention.

In the accompanying drawings, each numerical label is explained as follows:

1-first knife body; 2-second knife body; 11-first blade; 12-first handle; 21-second blade; 22-second handle; 3-bevel; 4-small edge; 5 -rounded corner protrusion; 6-arc groove; 7-hand-held through hole; 8-cutting surface; 9-rectangular powder storage tank; 10-triangular powder storage tank; 11-U-shaped powder storage tank; 12- Spherical titanium carbide; 13-non-spherical titanium carbide; 14-antibacterial matrix.

Detailed ways

The technical solutions of the present invention will be described below with reference to the accompanying drawings and examples, and the specific examples do not represent limitations on the protection scope of the present invention. Some non-essential modifications and adjustments made by others according to the concept of the present invention still belong to the protection scope of the present invention.

The present invention provides a children's food supplement knife and scissors, as shown in Figure 1, which shows a schematic structural diagram of the children's food supplement knife and scissors. The children's food supplement knife and scissors include two hinged knife bodies, namely the first knife body 1 and the second knife body 2 as shown in the figure, wherein the thickness of the first knife body 1 and the second knife body 2 is 2.0mm- 4.5mm; two knife bodies are provided with blades and handles, that is, the first blade body 1 is provided with a first blade 11 and a first handle 12, and the first handle 12 is fixedly installed on the first knife body 1, and the first blade 11 and the first handle 12 are respectively located on both sides of the hinge position of the first cutter body 1; the second cutter body 2 is provided with a second blade 21 and a second handle 22, the second A knife handle 22 is fixedly mounted on one end of the first knife body 2 , and the second knife edge 21 and the second knife handle 22 are respectively located on two sides of the hinge position of the second knife body 2 .

In one embodiment, the first handle 12 and the second handle 22 are both provided with a handle through hole 7 .

In one embodiment, the first knife handle 12 and the second knife handle 22 can be set independently of the first knife body 1 and the second knife body 2 respectively.

In some other possible embodiments, the first knife handle 12 can be integrally formed with the first knife body 1 ; the second knife handle 22 can be integrally formed with the second knife body 2 .

As shown in Fig. 2-Fig. 4, they respectively show the partial structure diagram, orthographic projection and specified perspective diagram of children's food supplement knife and scissors. Wherein, both cutter bodies have shearing surfaces that are attached and can rotate relatively, that is, the first cutter body 1 and the second cutter body 2 have shearing surfaces that are attached and can rotate relatively, and at least one cutter body The blade on the body includes an inclined surface 3 and a small edge 4, wherein the first blade 11 and the second blade 21 are provided with an inclined surface 3 inside, and the inclined surface 3 is provided on the side opposite to the shearing surface of the cutter body, and the inclined surface 3 is located on the opposite side of the two cutter bodies, and the inclined surface 3 is arranged obliquely relative to the shearing surface; the small blade 4 is arranged on the inclined surface 3 and is located on the side of the inclined surface 3 close to the shearing surface, and the small blade 4 includes a plurality of Rounded protrusions 5 arranged at intervals and arc-shaped grooves 6 connecting two adjacent rounded protrusions 5 .

In one embodiment, the structures of the two cutter bodies can be set to be the same structure, and the structure of the blade will be described below taking the first cutter body as an example.

The first blade 11 includes an inclined surface 3 and a small edge 4, wherein the inclined surface 3 is set on the side of the first cutter body 11 opposite to the shearing surface, and the inclined surface 3 is located at the first cutter body 1 and the second cutter body 2 opposite On one side, the inclined surface 3 is inclined with respect to the shearing surface, specifically, the angle between the inclined surface 3 and the shearing surface is 5°-45°; the small blade 4 is arranged on the inclined surface 3 and located The inclined surface is on the side of the shearing surface, the small blade 4 forms an included angle with the shearing surface, and the angle between the small blade 4 and the first cutter body 1 is 45 degrees to 90 degrees, and the small blade 4 is inclined The orthographic projection width on the surface is greater than zero and less than or equal to two-thirds of the projection width of the inclined surface 3 .

Further specifically, the width of the orthographic projection of the small edge 4 on the inclined surface may be one-third or one-half of the width of the orthographic projection of the inclined surface 3 .

The distribution width (that is, the distribution area) of the small blade on the inclined surface is limited so that it will not be too large and affect the strength of the small blade.

As shown in Figure 5, it shows a schematic diagram of the structure of the small blade. Wherein, the small edge 4 includes a plurality of rounded protrusions 5 arranged at intervals, and the plurality of rounded protrusions are arranged along the parallel direction of the intersection line of the inclined surface and the shearing surface, and the tip of the rounded protrusions 5 Set towards the position where the inclined surface intersects with the shearing surface; the rounded protrusion 5 is connected by an arc groove 6, the arc diameter of the arc groove 6 is less than or equal to 2mm, and the rounded protrusion The rounded diameter of the protrusion 5 is less than or equal to the arc diameter of the arc-shaped groove 6, and the height of the rounded protrusion 5 is less than or equal to 4mm.

Thereby, a plurality of rounded protrusions 5 and arc-shaped grooves 6 form a zigzag snapping shearing structure. The second blades 21 are close to each other and stick to the surface of the food. In the process of force shearing, the rounded protrusions 5 can be inserted into the food to assist in fixing the food, so as to prevent the food from moving against the surface of the food during the shearing process. The sliding of the first cutter body 1 and the second cutter body 2 facilitates subsequent further cutting, thereby improving the cutting efficiency.

The children's complementary food scissors provided by the present invention and the preparation method thereof will be further described below in conjunction with the examples.

Example 1

The children's food supplement knife and scissors of embodiment 1 and a preparation method thereof comprise the steps of:

(1) Knife body pretreatment:

The material of the cutter body in Example 1 is cold-pressed 304 copper-containing antibacterial stainless steel with a thickness of 2mm. Prepare a chute at the place to be clad of the cutter body, prepare a zigzag groove on the chute, prepare a rectangular powder storage tank on the zigzag groove, grind to remove scale and rust spots, and clean the dust and oil on the surface with acetone . The structure of the groove and the powder storage tank is shown in Figure 6.

(2) Preparation of cemented carbide powder:

The cemented carbide powder of Example 1 is composed of 70% by mass of antibacterial alloy matrix and 30% of spherical titanium carbide powder. Among them, in the antibacterial alloy matrix, the composition by mass percentage is Cr: 17.52%, Nb: 1.55%, Mo: 0.51%, Al: 0.15%, C: 0.53%, Si: 0.1%, Mn: 0.5%, V : 2%, Ni: 1%, Ag: 0.05%, S: 0.001%, P: 0.012%, and the rest are Fe and its unavoidable impurities. The composition of cemented carbide powder is shown in Fig. 8.

The antibacterial matrix is smelted to molten metal by metallurgical methods, and TiC strengthening phase is added to the molten metal of high temperature antibacterial matrix, mixed evenly by vibration and stirring, and then made into cemented carbide powder by atomization equipment, with an average particle size The diameter is 135.792 μm, and the powder particle size test report is shown in Figure 10.

(3) cladding coating:

Pre-spread a part of cemented carbide powder on the powder storage tank, adjust the ABB equipment control panel to determine the parameters, and use the laser beam to prepare the coating by coaxial powder feeding.

The specific process parameters are: laser power 1200W, defocusing distance 13mm, cladding speed 5mm/s, shielding gas pressure 0.15Mpa, laser spot diameter 3mm, powder feeder gas carrying capacity 4MPa, powder disc rotation speed 2.5r/min, the gas used for powder feeding by the powder feeder and the protective gas for laser cladding are both 99.99% argon.

The metallographic structure of the coating is shown in Figure 12, and the spherical titanium carbide is evenly distributed in the metallurgical structure.

(4) Edge treatment:

The excess part of the coating is cut and ground by a machine tool, and after heat treatment, the inclined surface 3 is prepared by a cutting device and a sharpening machine, and the small blade 4 is prepared by a water beam laser.

The angle of inclination of the inclined surface 3 is 17 degrees, the angle between the small blade 4 and the first cutter body is 45 degrees, the angle between the small blade 4 and the second cutter body is 45 degrees, and the projected thickness of the inclined surface 3 is S=2mm , the projected thickness of the small blade 4 is W=1mm, the diameter d=1mm of the arc-shaped groove, and the height h=0.8mm of the rounded sawtooth-shaped protrusion.

Finally, the surface of the blade is treated by abrasive flow equipment, and the handle is installed after the grinding inspection is qualified, so that the children's food supplement knife and scissors with the structure shown in Figure 1 are obtained.

Fig. 7 is the preparation process of children's food supplement knife and scissors of the present invention.

Example 2

The children's food supplement knife and scissors of embodiment 2 and a preparation method thereof comprise the steps of:

(1) Knife body pretreatment:

The material of the cutter body in Example 2 is cold-pressed 304 copper-containing antibacterial stainless steel with a thickness of 3mm. Prepare a chute at the place to be clad of the cutter body, prepare a zigzag groove on the chute, prepare a rectangular powder storage tank on the zigzag groove, grind to remove scale and rust spots, and clean the dust and oil on the surface with acetone . The structure of the groove and the powder storage tank is shown in Figure 6.

(2) Preparation of cemented carbide powder:

The cemented carbide powder in Example 2 is composed of 60% by mass of antibacterial alloy matrix and 40% of non-spherical titanium carbide powder. Among them, in the antibacterial alloy matrix, the composition by mass percentage is Cr: 17.52%, Nb: 1.55%, Mo: 0.51%, Al: 0.15%, C: 0.53%, Si: 0.1%, Mn: 0.5%, V : 2%, Ni: 1%, Ag: 0.05%, S: 0.001%, P: 0.012%, and the rest are Fe and its unavoidable impurities. The composition of cemented carbide powder is shown in Figure 9.

The antibacterial matrix is smelted to molten metal by metallurgical methods, and TiC strengthening phase is added to the molten metal of high temperature antibacterial matrix, mixed evenly by vibration and stirring, and then made into cemented carbide powder by atomization equipment, with an average particle size The diameter is 140.318 μm, and the powder particle size test report is shown in Figure 11.

(3) cladding coating:

Pre-spread a part of cemented carbide powder on the powder storage tank, adjust the ABB equipment control panel to determine the parameters, and use the laser beam to prepare the coating by coaxial powder feeding.

The specific process parameters are: laser power 1350W, defocus distance 14mm, cladding speed 3.5mm/s, shielding gas pressure 0.1Mpa, laser spot diameter 3mm, powder feeder gas carrying capacity 3MPa, powder disc speed 2r/min, the gas used for powder feeding by the powder feeder and the protective gas for laser cladding are both 99.99% argon.

The metallographic structure of the coating is shown in Figure 13, and the spherical titanium carbide is evenly distributed in the metallurgical structure.

(4) Edge processing:

The excess part of the coating is cut and ground by a machine tool, and after heat treatment, the inclined surface 3 is prepared by a cutting device and a sharpening machine, and the small blade 4 is prepared by a water beam laser.

The angle of inclination of the inclined surface 3 is 19 degrees, the angle between the small edge 4 and the first cutter body is 45 degrees, the angle between the small edge 4 and the second cutter body is 45 degrees, and the angle between the small edge 4 and the second cutter body is 45 degrees. The projected thickness of 3 is S=3mm, the projected thickness of the small blade 4 is W=1.5mm, the diameter of the arc-shaped groove d=1mm, and the height of the rounded zigzag protrusion h=0.8mm .

Finally, the surface of the blade is treated by abrasive flow equipment, and the handle is installed after the grinding inspection is qualified, so that the children's food supplement knife and scissors with the structure shown in Figure 1 are obtained.

Fig. 7 is the preparation process of children's food supplement knife and scissors of the present invention.

Corrosion resistance, sharpness and durability tests are carried out according to ISO 8442-5:2004 and GB/15067.2-2016.

The antibacterial detection results of the children's food supplement knife and scissors of Example 2 are shown in Figure 14, and the antibacterial property is greater than 99.9%; the salt spray test results are shown in Figure 15, and the salt spray test is qualified after 6 hours of corrosion; hardness, sharpness and durability The test results are shown in Figure 16, the hardness is HRC64, the sharpness is 157mm, and the durability is 832mm.

The above-mentioned implementation mode is only the preferred implementation mode of the present application, which cannot limit the protection scope of the present application. Scope of protection claimed.

Claims (10)

1. A children's complementary food knife and scissors, comprising two mutually hinged cutter bodies, said cutter bodies are all provided with a blade and a knife handle, wherein, the two cutter bodies all have shearing surfaces that are attached and can rotate relatively, It is characterized in that at least one blade on the cutter body includes an inclined surface (3) and a small edge (4), wherein the inclined surface (3) is set on the side of the cutter body opposite to the shearing surface, And the inclined surface (3) is located on the opposite side of the two cutter bodies, the inclined surface (3) is arranged obliquely relative to the shearing surface; the small edge (4) is arranged on the inclined surface (3) and located on the side of the inclined surface (3) close to the shearing surface, the small blade (4) includes a plurality of rounded protrusions (5) arranged at intervals and connects two adjacent The arc-shaped groove (6) of the rounded protrusion (5). 2. The children's complementary food knife and scissors according to claim 1, characterized in that, the handle of the knife is fixedly installed on one end of the body of the knife, and the handle of the knife is provided with a hand-held through hole (7). 3. The children's food supplement knife and scissors according to claim 1, characterized in that, the inclination angle between the inclined surface (3) and the cutting surface is 5°-45°. 4. The children's complementary food knife and scissors as claimed in claim 1, characterized in that, the small blade (4) is arranged obliquely relative to the shearing surface and the clip between the small blade (4) and the shearing surface The angle is 45°-90°. 5. The children's food supplement knife and scissors according to claim 1, characterized in that, the projected width of the small blade (4) on the inclined surface (3) is greater than zero, and less than or equal to the projected width of the inclined surface (3). two-thirds of the width. 6. The children's food supplement knife and scissors according to claim 1, characterized in that, the arc diameter of the arc groove (6) is less than or equal to 2mm, and the round corner diameter of the rounded protrusion (5) It is less than or equal to the arc diameter of the arc groove (6), and the height of the rounded protrusion (5) is less than or equal to 4mm. 7. The children's food supplement knife and scissors according to claim 1, wherein the knife body is made of antibacterial stainless steel, the thickness of the knife body is 2.0mm-4.5mm, and the antibacterial alloy coating is fused on the blade . 8. A preparation method of children's food supplement knife and scissors according to any one of claims 1-7, characterized in that the preparation method comprises the following steps: S1. Pretreatment of the cutter body blank: prepare a chute on the cutter body blank, prepare a zigzag groove on the chute, prepare a powder storage groove on the zigzag groove, and the powder storage groove is rectangular, triangular or U-shaped; S2. Put the cemented carbide powder in the powder storage tank, and prepare the coating by coaxial powder feeding with a high-energy beam; S3. Sharpen the coated cutter body, prepare the bevel (3) and the small blade (4), and install the handle (7) after grinding. 9. The preparation method according to claim 8, wherein the particle size range of the hard metal powder is 15 μm-245 μm, and the hard metal powder is composed of a TiC strengthening phase and an antibacterial alloy matrix, and the antibacterial alloy matrix The mass percentage is 5%-100%, and the mass percentage of the TiC strengthening phase is 0%-95%; Preferably, the mass percentage of the antibacterial alloy matrix is 50%-80%, and the mass percentage of the TiC strengthening phase is 20%-50%; Further preferably, the mass percentage of the antibacterial alloy matrix is 60%-70%, and the mass percentage of the TiC strengthening phase is 30%-40%; Preferably, in the antibacterial alloy matrix, the composition by mass percentage is Cr: 10%-20%, Nb: 0.01%-2.5%, Mo: 0.1%-5.5%, Al: 0.1%-0.5%, C : 0.05%-0.65%, Si: 0.01%-0.5%, Mn: 0.01%-0.5%, V: 0.05%-2.5%, Ni: 0.5%-2.5%, Ag≤0.15%, S≤0.002%, P ≤0.025%, the rest is Fe and unavoidable impurities; Further preferably, in the antibacterial alloy matrix, the composition by mass percentage is Cr: 17.52%, Nb: 1.55%, Mo: 0.51%, Al: 0.15%, C: 0.53%, Si: 0.1%, Mn: 0.5%, V: 2%, Ni: 1%, Ag: 0.05%, S: 0.001%, P: 0.012%, and the balance is Fe and unavoidable impurities. 10. The preparation method according to claim 8, wherein the high-energy beam comprises a laser beam, a plasma beam, a composite high-energy beam of laser and plasma; Preferably, the high-energy beam is a laser beam; Preferably, the process parameters corresponding to the laser beam are: laser power 1200-1400W, spot diameter 2-4mm, cladding speed 3-6mm/s, defocus amount 12-15mm, powder feeder gas carrying capacity 3-5MPa, The speed of the powder disc is 1-3r/min.

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