High-wear-resistance cutting pick capable of prolonging service life

Abstract

The utility model relates to the technical field of high-wear-resistance cutting picks, in particular to a high-wear-resistance cutting pick capable of prolonging the service life, which comprises a base body, a working surface fixedly connected to the top end of the base body, a tip fixedly connected to the top end of the working surface, and first high-strength alloy steel, aluminum oxide ceramic, a first hard alloy layer and a tungsten carbide coating arranged in the base body, the working surface comprises second high-strength alloy steel, a glass fiber reinforced plastic layer and an ultra-high molecular weight polyethylene layer, and the tip comprises second hard alloy and a chromium carbide layer; the composite coating and the structure are formed on the surface of the cutting pick, so that the wear resistance of the cutting pick can be remarkably improved, the service life of the cutting pick can be greatly prolonged directly, and the replacement frequency and the maintenance cost are reduced; and the ultra-high molecular weight polyethylene layer on the surface of the working surface and the chromium carbide layer on the surface of the tip can obviously improve the wear resistance of the cutting pick, so that the cutting pick is suitable for severe working environments.

Description

Technical Field

[0001] The utility model relates to the technical field of high-wear-resistant picks, in particular to a high-wear-resistant pick with increased service life. Background Art

[0002] A pick is a tool used in mining equipment such as shearers, excavators, tunnel boring machines, etc. to cut, break and crush rock, coal or other hard materials;

[0003] Picks are usually installed on the cutting head of mining machinery. They are key components that come into direct contact with the material being cut and complete the cutting operation. Picks need to have high hardness and wear resistance to cope with the wear of hard materials such as rock and coal. At the same time, during the cutting process, picks need to withstand huge impact and pressure, so they must have sufficient strength. In addition, because the working environment of picks is extremely harsh, they must have good wear resistance to ensure a long service life.

[0004] When using existing picks, they may be easily worn in harsh working environments due to environmental, geological and other conditions. Once wear occurs, the picks need to be removed from the equipment, which not only shortens the service life, but also increases the frequency of replacement of the picks, increasing maintenance costs while reducing the efficiency of operations such as excavation.

[0005] In order to solve the above problems, the present application proposes a high wear-resistant pick that can increase the service life. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a high wear-resistant pick that can increase the service life and can significantly improve the wear resistance of the pick.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a high-wear-resistant pick that can increase the service life, including a base, a working surface fixedly connected to the top of the base, a tip fixedly connected to the top of the working surface, the base containing a first high-strength alloy steel, alumina ceramics, a first cemented carbide layer and a tungsten carbide coating, the working surface containing a second high-strength alloy steel, a glass fiber reinforced plastic layer and an ultra-high molecular weight polyethylene layer, and the tip containing a second cemented carbide and a chromium carbide layer.

[0008] As a preferred high-wear-resistant pick with increased service life of the utility model, the first high-strength alloy steel surface is fixedly connected to the inner wall of the alumina ceramic, the alumina ceramic surface is fixedly connected to the inner wall of the first hard alloy layer, the first hard alloy layer surface is fixedly connected to the inner wall of the tungsten carbide coating, the second high-strength alloy steel surface is fixedly connected to the inner wall of the glass fiber reinforced plastic layer, the glass fiber reinforced plastic layer surface is fixedly connected to the inner wall of the ultra-high molecular weight polyethylene layer, and the second hard alloy surface is fixedly connected to the inner wall of the chromium carbide layer, which can significantly improve the wear resistance of the pick, directly lead to a significant increase in the service life of the pick, and reduce the replacement frequency and maintenance costs.

[0009] As a preferred embodiment of the high wear-resistant pick of the present invention that can increase the service life, the first high-strength alloy steel is used as the main structural material of the matrix, and the first high-strength alloy steel can provide strength and toughness of the matrix.

[0010] As a preferred high-wear-resistant pick that can increase the service life of the utility model, the thickness of the alumina ceramic and the first carbide layer is five millimeters, and the thickness of the tungsten carbide coating is 0.5 millimeters. The matrix formed by the first high-strength alloy steel, alumina ceramic, the first carbide layer and the tungsten carbide coating is cylindrical in shape. The first carbide layer serves as a wear-resistant layer for withstanding high wear conditions, while the alumina ceramic is used as a wear-resistant layer under extreme wear and high temperature environments, and the tungsten carbide coating serves as a surface protective layer for improving wear resistance and corrosion resistance.

[0011] As a preferred high-wear-resistant pick that can increase the service life of the utility model, the second high-strength alloy steel is used as the main structural material of the working surface, and the carbon content and material of the second high-strength alloy steel are the same as those of the first high-strength alloy steel. The second high-strength alloy steel is used as the basic material of the working surface to provide structural strength and support.

[0012] As a preferred high-wear-resistant pick of the utility model that can increase the service life, the thickness of the glass fiber reinforced plastic layer and the ultra-high molecular weight polyethylene layer is five millimeters, and the shapes of the glass fiber reinforced plastic layer and the ultra-high molecular weight polyethylene layer match the surface shape of the second high-strength alloy steel. The glass fiber reinforced plastic layer serves as the middle layer, providing good impact resistance and certain wear resistance, while the ultra-high molecular weight polyethylene layer serves as the outermost layer of the working surface, providing excellent wear resistance and low friction coefficient.

[0013] The utility model discloses a high wear -resistant pick of increasing life, preferably, the second hard alloy is the main structural material of the tip, and the thickness of the chromium carbide layer on the surface of the second hard alloy is zero point five millimeter, the material quality of the second hard alloy is same with the material quality of the first hard alloy layer, but the second hard alloy is the base material of the tip, and the chromium carbide layer is used for improving the high wear resistance and corrosion resistance of the second hard alloy.

[0014] The utility model has the advantages of the following:

[0015] The high wear -resistant pick of increasing life of the utility model, through the composite coating and structure formed on the pick surface, the device can significantly improve the wear resistance of the pick, will directly lead to the service life of pick to get the substantial promotion, reduces the replacement frequency and maintenance cost, and the ultrahigh molecular weight polyethylene layer on the surface of the working face and the chromium carbide layer on the surface of the tip can significantly improve the wear resistance of the pick, applicable to the severe working environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, explain the utility model with the embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the longitudinal section structure schematic diagram of the utility model's base body;

[0019] Figure 3 It is the longitudinal section and explosion structure schematic diagram of the utility model's working face;

[0020] Figure 4 It is the tip longitudinal section structure schematic diagram of the utility model.

[0021] Legend:

[0022] 1, base body;2, working face;3, tip;101, first high strength alloy steel;102, alumina ceramic;103, first hard alloy layer;104, tungsten carbide coating;201, second high strength alloy steel;202, glass fiber reinforced plastic layer;203, ultrahigh molecular weight polyethylene layer;301, second hard alloy;302, chromium carbide layer. PREFERRED EMBODIMENT

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figures 1 to 4 As shown;

[0026] A high-wear-resistant pick with increased service life comprises a base body 1.

[0027] In this embodiment: As disclosed in the background technology above, "the existing picks may be easily worn in harsh working environments due to environmental, geological and other conditions. Once worn, the picks need to be removed from the equipment, which not only shortens the service life but also increases the frequency of replacement of the picks, increasing maintenance costs while reducing the efficiency of operations such as excavation." In terms of combined use, this problem is obviously an existing and difficult to solve problem. Therefore, in order to solve this technical problem, the first high-strength alloy steel 101 and the second high-strength alloy steel 201 are added to this application document;

[0028] More specifically:

[0029] like Figures 1 to 4 As shown:

[0030] In combination with the above content: A high wear-resistant pick with increased service life includes a base 1, a working surface 2 is set at the top of the base 1, and a tip 3 is set at the top of the working surface 2. The base 1 contains a first high-strength alloy steel 101, an alumina ceramic 102, a first hard alloy layer 103 and a tungsten carbide coating 104, the working surface 2 contains a second high-strength alloy steel 201, a glass fiber reinforced plastic layer 202 and an ultra-high molecular weight polyethylene layer 203, the tip 3 contains a second hard alloy 301 and a chromium carbide layer 302, the first The high-strength alloy steel 101 is welded to the alumina ceramic 102, the surface of the alumina ceramic 102 is welded to the inner wall of the first cemented carbide layer 103, the surface of the first cemented carbide layer 103 is fixed to the inner wall of the tungsten carbide coating 104 by spraying, the surface of the second high-strength alloy steel 201 is adhered to the inner wall of the glass fiber reinforced plastic layer 202 by adhesive, the surface of the glass fiber reinforced plastic layer 202 is adhered to the inner wall of the ultra-high molecular weight polyethylene layer 203 by adhesive, and the surface of the second cemented carbide 301 is fixed to the inner wall of the chromium carbide layer 302 by spraying.

[0031] In this embodiment, the wear resistance of the pick can be significantly improved, which directly leads to a significant increase in the service life of the pick and reduces the replacement frequency and maintenance cost.

[0032] In an optional embodiment, the first high-strength alloy steel 101 is used as the main structural material of the substrate 1 .

[0033] In this embodiment, the first high-strength alloy steel 101 can provide strength and toughness to the substrate 1 .

[0034] In an optional embodiment: the thickness of the alumina ceramic 102 and the first cemented carbide layer 103 is both five millimeters, and the thickness of the tungsten carbide coating 104 is 0.5 millimeters, and the substrate 1 formed by the first high-strength alloy steel 101, the alumina ceramic 102, the first cemented carbide layer 103 and the tungsten carbide coating 104 is cylindrical.

[0035] In this embodiment, the first cemented carbide layer 103 serves as a wear-resistant layer for withstanding high wear conditions, while the alumina ceramic 102 serves as a wear-resistant layer for extreme wear and high temperature environments, and the tungsten carbide coating 104 serves as a surface protective layer for improving wear resistance and corrosion resistance.

[0036] In an optional embodiment, the second high-strength alloy steel 201 is used as the main structural material of the working surface 2 , and the carbon content and material of the second high-strength alloy steel 201 are the same as those of the first high-strength alloy steel 101 .

[0037] In this embodiment, the second high-strength alloy steel 201 serves as the base material of the working surface 2 to provide structural strength and support.

[0038] In an optional embodiment, the thickness of the glass fiber reinforced plastic layer 202 and the ultra-high molecular weight polyethylene layer 203 are both five millimeters, and the shapes of the glass fiber reinforced plastic layer 202 and the ultra-high molecular weight polyethylene layer 203 match the surface shape of the second high-strength alloy steel 201 .

[0039] In this embodiment, the glass fiber reinforced plastic layer 202 serves as the middle layer, providing good impact resistance and certain wear resistance, while the ultra-high molecular weight polyethylene layer 203 serves as the outermost layer of the working surface 2, providing excellent wear resistance and a low friction coefficient.

[0040] In an optional embodiment, the second cemented carbide 301 is used as the main structural material of the tip 3 , and the thickness of the chromium carbide layer 302 on the surface of the second cemented carbide 301 is 0.5 mm.

[0041] In this embodiment, the material of the second cemented carbide 301 is the same as that of the first cemented carbide layer 103 , but the second cemented carbide 301 serves as the base material of the tip 3 , while the chromium carbide layer 302 is used to improve the wear resistance and corrosion resistance of the second cemented carbide 301 .

[0042] The working principle and use process of the utility model are as follows: first, the pick consisting of the first high-strength alloy steel 101, the second high-strength alloy steel 201 and the second hard alloy 301 is fixed, and the pick is divided into three parts, namely the base 1, the working surface 2 and the tip 3. The structures of the outer sides of the three parts are different. First, the base 1 is covered with a layer of alumina ceramic 102 on the outer side of the base 1 and welded to the outer side of the first high-strength alloy steel 101. Then, the first hard alloy layer 103 is taken out and covered on the outer side of the alumina ceramic 102. The same method is used to weld it once. Finally, a tungsten carbide coating 104 is sprayed on the surface of the first cemented carbide layer 103. Then, a glass fiber reinforced plastic layer 202 is wrapped around the outside of the second high-strength alloy steel 201 serving as the working surface 2, and an ultra-high molecular weight polyethylene layer 203 is wrapped around the outside of the glass fiber reinforced plastic layer 202. The two layers are fixed in a stepped manner on the second high-strength alloy steel 201 using adhesive. Finally, a chromium carbide layer 302 is sprayed on the outside of the second cemented carbide 301. At this time, the strength and service life of the pick are enhanced, reducing the replacement frequency and maintenance cost.

[0043] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high wear-resistant pick with increased service life, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a working surface (2), and the top of the working surface (2) is fixedly connected to a tip (3). The base (1) contains a first high-strength alloy steel (101), aluminum oxide ceramics (102), a first hard alloy layer (103), and a tungsten carbide coating (104). The working surface (2) contains a second high-strength alloy steel (201), a glass fiber reinforced plastic layer (202), and an ultra-high molecular weight polyethylene layer (203). The tip (3) contains a second hard alloy (301) and a chromium carbide layer (302).

2. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The surface of the first high-strength alloy steel (101) is fixedly connected to the inner wall of the alumina ceramic (102), the surface of the alumina ceramic (102) is fixedly connected to the inner wall of the first hard alloy layer (103), the surface of the first hard alloy layer (103) is fixedly connected to the inner wall of the tungsten carbide coating (104), the surface of the second high-strength alloy steel (201) is fixedly connected to the inner wall of the glass fiber reinforced plastic layer (202), the surface of the glass fiber reinforced plastic layer (202) is fixedly connected to the inner wall of the ultra-high molecular weight polyethylene layer (203), and the surface of the second hard alloy (301) is fixedly connected to the inner wall of the chromium carbide layer (302).

3. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The first high-strength alloy steel (101) serves as the main structural material of the matrix (1).

4. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The thickness of the alumina ceramic (102) and the first hard alloy layer (103) is 5 mm, and the thickness of the tungsten carbide coating (104) is 0.5 mm. The substrate (1) formed by the first high-strength alloy steel (101), the alumina ceramic (102), the first hard alloy layer (103) and the tungsten carbide coating (104) is cylindrical.

5. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The second high-strength alloy steel (201) serves as the main structural material of the working surface (2), and the carbon content and material of the second high-strength alloy steel (201) are the same as those of the first high-strength alloy steel (101).

6. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The thickness of the glass fiber reinforced plastic layer (202) and the ultra-high molecular weight polyethylene layer (203) is the same as five millimeters, and the shapes of the glass fiber reinforced plastic layer (202) and the ultra-high molecular weight polyethylene layer (203) match the surface shape of the second high-strength alloy steel (201).

7. The high wear-resistant pick with increased service life according to claim 1, characterized in that: The second hard alloy (301) serves as the main structural material of the tip (3), and the thickness of the chromium carbide layer (302) on the surface of the second hard alloy (301) is 0.5 mm.

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