Composite steel billet for cutter plate

Abstract

The utility model discloses a composite steel billet for a cutter plate, which belongs to the technical field of metal materials and comprises protective layers which are symmetrically arranged, a cutting layer and reinforcing layers are arranged between the protective layers, and the reinforcing layers are symmetrically arranged on two sides of the cutting layer. By optimizing the structural design, the performance of a finished cutter can be improved, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal materials, in particular to a composite steel billet for a tool plate. Background Art

[0002] As the core material in mechanical processing, the performance of tool plates directly affects the processing efficiency and quality. Traditional tool plates are usually made of a single material, such as carbon steel or stainless steel. Although the cost is low, it is difficult to have excellent hardness and toughness. Patent CN201863443U discloses a composite steel billet specially used for making tools. It adopts a three-layer structure, with two outer layers of carbon steel layers or stainless steel layers, and a middle layer of manganese steel layer. The tools made of it have strong hardness, good toughness, and no curling. The composite steel billet is a uniform three-layer structure. Some of the problems that exist are: 1. The use of materials is unreasonable. A large amount of expensive alloy steel is required in the composite steel billet, and the production cost is high; 2. The structure of the blade of the manufactured tool is unreasonable, the blade contains a lot of manganese steel material, and the tool processing efficiency is low. Utility Model Content

[0003] In view of the above problems, the utility model provides a composite steel billet for tool plates, which can improve the performance of finished tool, increase production efficiency and reduce production costs by optimizing structural design.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A composite steel billet for a tool plate comprises symmetrically arranged protective layers, wherein a cutting layer and a reinforcing layer are arranged between the protective layers, and the reinforcing layers are symmetrically arranged on both sides of the cutting layer.

[0006] As a further improvement of the above solution, a cutting portion is provided on the surface of the protective layer.

[0007] As a further improvement of the above solution, a separation layer is provided between the protective layer and the cutting layer and the strengthening layer.

[0008] As a further improvement of the above solution, a separation layer is provided between the cutting layer and the reinforcement layer.

[0009] As a further improvement of the above solution, the protective layer is a stainless steel layer, the cutting layer is an alloy steel layer, and the reinforcing layer is a carbon steel layer.

[0010] As a further improvement of the above solution, the width ratio of the cutting layer to the strengthening layer is 1:6 to 1:2.

[0011] As a further improvement of the above solution, the thickness of the cutting layer accounts for 15% to 35% of the thickness of the entire steel billet.

[0012] As a further improvement of the above solution, the thickness of the reinforcement layer accounts for 50% to 95% of the thickness of the entire steel billet.

[0013] A cutting tool comprises a further improvement of the above-mentioned solution, wherein the protective layer and the reinforcing layer of the composite steel billet form a cutting body, and the cutting layer forms a cutting edge.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) A cutting layer and a reinforcing layer are arranged in the middle of the protective layer to prepare the blade and the blade body of the tool respectively, so that the material composition and width ratio of the blade and the blade body can be optimized and adjusted respectively, so that the tool can still have excellent performance while reducing the use of expensive steel, thereby reducing production costs;

[0016] (2) The composite steel billet can be divided into two by the cutting part, and the composite steel billet after cutting can be formed into a tool having a blade body and a blade structure, that is, two tools can be obtained by manufacturing the composite steel billet once, thereby shortening the processing time of a single tool and improving production efficiency;

[0017] (3) Providing a separation layer between different layers of materials can reduce the deformation caused by the difference in thermal properties of different material layers during heat treatment. In addition, it can provide additional adhesion to prevent interlayer peeling and extend the service life of the tool;

[0018] (4) Through the structural optimization design of the composite steel billet, the stainless steel protective layer can provide the tool with good wear resistance and corrosion resistance, and the alloy steel cutting layer and carbon steel reinforcement layer can provide the strength, toughness and cutting performance required by the tool, thereby achieving an improvement in the comprehensive performance of the tool plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the composite steel billet of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0021] Figure 3 The schematic diagram of the structure of the blade blank steel strip is as follows;

[0022] Figure 4 Schematic diagram of the tool structure;

[0023] Figure 5 Schematic diagram of the AA section of the manufactured tool;

[0024] In the figure: 10, protective layer; 11, cutting layer; 12, reinforcement layer; 13, cutting part; 14, partition layer; 15, blade; 16, blade; 17, handle. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution, the utility model is described in detail below in conjunction with embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0026] See also Figure 1 , Figure 2 The present embodiment provides a composite steel billet for a tool plate, comprising protective layers 10 symmetrically arranged above and below, a cutting layer 11 located in the middle of the protective layers 10, symmetrically arranged reinforcement layers 12 are provided on both sides of the cutting layer 11, the reinforcement layers 12 are arranged in the middle between the protective layers 10, a cutting portion 13 is provided on the surface of the protective layer 10, the cutting portion 13 is a cutting line, and is used to cut the rolled composite steel billet. In the present embodiment, the cutting portion 13 is located in the middle of the protective layer 10. After being cut by the cutting portion 13, the entire steel billet is cut in half and divided into two identical steel billets.

[0027] As a preferred embodiment of the above embodiment, a separation layer 14 is provided between the protective layer 10 and the cutting layer 11 and the reinforcing layer 12, and a separation layer 14 is also provided between the cutting layer 11 and the reinforcing layer 12, which can improve the adhesion between different material layers.

[0028] As a preferred embodiment of the above embodiment, a groove for accommodating the reinforcing layer 12 is provided in the protective layer 10 .

[0029] As a preferred embodiment of the above embodiment, the protective layer 10, the cutting layer 11 and the reinforcing layer 12 are plate-like structures, wherein the protective layer 10 is a stainless steel layer, and 3Cr13 stainless steel plate can be selected; the cutting layer 11 is an alloy steel layer, and T8 steel plate or 5Cr15MoV steel plate can be selected; the reinforcing layer 12 is a carbon steel layer, and 45# steel plate can be selected.

[0030] As a preferred embodiment of the above embodiment, the width ratio of the cutting layer 11 to the reinforcing layer 12 is 1:6 to 1:2.

[0031] As a specific embodiment of the present invention, the width ratio of the composite steel billet cutting layer 11 to the reinforcement layer 12 is 1:5.

[0032] As a preferred embodiment of the above embodiment, the thickness of the cutting layer 11 accounts for 15% to 35% of the thickness of the composite steel billet.

[0033] As a preferred embodiment of the above embodiment, the thickness of the reinforcement layer 12 accounts for 50% to 95% of the thickness of the composite steel billet.

[0034] As a specific embodiment of the utility model, the composite steel billet uses 3Cr13 stainless steel plate as the protective layer 10, 45# steel plate as the reinforcing layer 12, T8 steel plate as the cutting layer 11, and nickel plate as the separation layer 14. Ultrasonic cleaning is used to remove oil and impurities on the surfaces of 3Cr13 stainless steel plate, 45# steel plate, T8 steel plate and nickel plate; the sheath is welded with 4mm thick 3Cr13 stainless steel, and the 5 surfaces of the sheath are welded with gas shielded welding, and the upper end surface opening is reserved for filling raw materials; according to 3C The plates are loaded into the package box in the order of r13 stainless steel plate, nickel plate, T8 steel plate / 45# steel plate, nickel plate, and 3Cr13 stainless steel plate; the total thickness of the steel billet is 208mm (including the thickness of the package), of which the thickness of the T8 steel plate is 60mm, the thickness of the 45# steel plate is 180mm, and the thickness of the nickel plate is 1mm. After filling, the upper cover plate of the package is covered; the package billet is transferred to the vacuum equipment, and the air in the package box is vacuumed to remove the air, and the vacuum degree is 10Pa, and then the upper cover plate is welded and sealed with an electron beam welder.

[0035] As a specific embodiment of the utility model, the composite steel billet uses 3Cr13 stainless steel plate as the protective layer 10, 45# steel plate as the reinforcing layer 12, 5Cr15MoV steel as the cutting layer 11, and the nickel plate as the separation layer 14. Ultrasonic cleaning is used to remove oil and impurities on the surfaces of the 3Cr13 stainless steel plate, the 45# steel plate, the 5Cr15MoV steel plate and the nickel plate; the sheath is welded with 4mm thick 3Cr13 stainless steel, and the 5 surfaces of the sheath are welded with gas shielded welding, and the upper end surface opening is reserved for filling the raw material; according to 3C The plates are loaded into the package box in the order of r13 stainless steel plate, nickel plate, 5Cr15MoV plate / 45# steel plate, nickel plate, and 3Cr13 stainless steel plate; the total thickness of the steel billet is 208mm (including the thickness of the package), of which the thickness of the 5Cr15MoV steel plate is 50mm, the thickness of the 45# steel plate is 160mm, and the thickness of the nickel plate is 1mm. After filling, the upper cover plate of the package is covered; the package billet is transferred to the vacuum equipment, and the air in the package box is vacuumed to remove the air, and the vacuum degree is 10Pa. Then the upper cover plate is welded and sealed with an electron beam welder.

[0036] See also Figure 1-3 This embodiment provides a blade steel strip, comprising Figure 1 The composite steel billet is rolled to the finished thickness and then finished, and cut along the cutting portion 13 to obtain Figure 3 The blade blank steel strip is shown.

[0037] See also Figure 1-5 , this embodiment provides a tool, such as Figure 4 As shown, it includes a blade body 15, a blade 16 and a handle 17, wherein the blade body 15 and the blade 16 are Figure 1The composite steel billet is made of a protective layer 10 and a reinforcing layer 12 of the composite steel billet to form a blade 15, and a cutting layer 11 to form a blade edge 16; in order to improve the adhesion between different plates, a separation layer 14 is provided between the protective layer 10 and the cutting layer 11 and the reinforcing layer 12, and a separation layer 14 is also provided between the cutting layer 11 and the reinforcing layer 12. Figure 1 The composite steel billet is rolled to the finished thickness and then finished, and cut along the cutting portion 13 to obtain Figure 3 The blade steel strip shown in the figure is then Figure 3 The blade 15 and the blade 16 are polished as shown by the dashed line C, and the blade 15 and the blade 16 are installed. Figure 5 The finished tool of the cross section shown; during the grinding process, a portion of the protective layer 10 on the outer layer of the cutting layer 11 will be retained to protect the blade 16.

[0038] It should be noted that, in this article, the terms: include, contain and any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Specific examples are used in this article to illustrate the principle and implementation of the technical solution of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that due to the limited expression of words, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A composite steel billet for tool plates, characterized in that: It comprises symmetrically arranged protective layers (10), wherein a cutting layer (11) and a reinforcing layer (12) are arranged between the protective layers (10), and the reinforcing layer (12) is symmetrically arranged on both sides of the cutting layer (11).

2. The composite steel billet for tool plate according to claim 1, characterized in that: A cutout portion (13) is provided on the surface of the protective layer (10).

3. The composite steel billet for tool plate according to claim 1, characterized in that: A separation layer (14) is provided between the protective layer (10), the cutting layer (11) and the strengthening layer (12).

4. The composite steel billet for tool plate according to claim 3, characterized in that: A separation layer (14) is provided between the cutting layer (11) and the reinforcing layer (12).

5. The composite steel billet for tool plate according to claim 1, characterized in that: The protective layer (10) is a stainless steel layer, the cutting layer (11) is an alloy steel layer, and the strengthening layer (12) is a carbon steel layer.

6. The composite steel billet for tool plate according to claim 1, characterized in that: The width ratio of the cutting layer (11) to the reinforcing layer (12) is 1:6 to 1:

2.

7. The composite steel billet for tool plate according to claim 1, characterized in that: The thickness of the cutting layer (11) accounts for 15% to 35% of the thickness of the entire steel billet.

8. The composite steel billet for tool plate according to claim 1, characterized in that: The thickness of the reinforcement layer (12) accounts for 50% to 95% of the thickness of the entire steel billet.

9. A cutting tool, characterized in that: It comprises a blade body (15) and a blade edge (16) made of a composite steel billet for tool plate as claimed in any one of claims 1 to 8, wherein the protective layer (10) and the reinforcing layer (12) of the composite steel billet form the blade body (15), and the cutting layer (11) forms the blade edge (16).

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