A wear-resistant trolley funnel liner

Abstract

This utility model discloses a wear-resistant trolley funnel liner. The liner includes a base layer and a weld overlay layer. The weld overlay layer is welded to the surface of the base layer. The base layer and the weld overlay layer are formed into an integral structure using a multi-layer weld overlay process. Each weld overlay layer is tightly bonded to the adjacent layer and the base layer, forming a continuous and dense composite structure. The base layer is made of low-carbon steel to ensure that the liner has sufficient strength and toughness to withstand material impact. The weld overlay layer is made of chromium carbide alloy to provide good wear resistance. The low-carbon steel of the base layer has good toughness and can absorb and disperse impact energy; while the chromium carbide alloy layer of the weld overlay layer has high hardness and can resist direct impact and wear from materials. This greatly enhances the impact resistance of the liner, reduces deformation and cracking caused by material impact, ensures the normal use of the funnel, and avoids environmental pollution and material waste caused by material leakage.

Description

Technical Field

[0001] This utility model relates to a trolley funnel liner, and more particularly to a wear-resistant trolley funnel liner. Background Technology

[0002] In material transportation, trolley funnels are common devices used to guide materials from high places to low places or designated locations. However, existing trolley funnel liners are mostly made of ordinary steel or cast iron, which has the following problems:

[0003] 1. Poor wear resistance: When conveying granular or lumpy materials, the friction between the material and the liner is frequent, which leads to rapid wear of the liner, short service life, and frequent replacement, increasing maintenance costs and downtime.

[0004] 2. Heavy weight: The lining plates made of ordinary steel or cast iron are relatively heavy, which increases the overall weight of the trolley, reduces transportation efficiency, and places higher demands on the trolley's load-bearing capacity and power system.

[0005] 3. Insufficient impact resistance: Under the impact of materials, it is prone to deformation and cracking, which affects the normal use of the funnel and may even lead to material leakage, causing environmental pollution and material waste. Utility Model Content

[0006] The purpose of this utility model is to solve the above-mentioned technical problems, thereby providing a wear-resistant trolley funnel liner;

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] This utility model provides a wear-resistant trolley funnel liner.

[0009] The liner includes a base layer and a weld overlay layer. The weld overlay layer is welded to the surface of the base layer. The base layer and the weld overlay layer are formed into an integral structure using a multi-layer weld overlay process. Each weld overlay layer is tightly bonded to the adjacent layer and the base layer, forming a continuous and dense composite structure. The base layer is made of low-carbon steel with a thickness ranging from 8mm to 15mm to ensure that the liner has sufficient strength and toughness to withstand material impact. The weld overlay layer is made of chromium carbide alloy, and the chromium carbide in the chromium carbide alloy layer... The content of the phase accounts for 40%-60% of the total volume of the weld overlay to provide good wear resistance.

[0010] Optionally, the total thickness of the weld overlay is 6mm-12mm, and it is divided into 3-5 layers for weld overlay, with each layer having a uniform thickness.

[0011] Optionally, a metallurgical bonding interface is formed between the substrate layer and the weld overlay layer, where elements diffuse into each other to form a transition region. The thickness of the transition region is 0.1 mm to 0.3 mm, thereby enhancing the bonding strength between the substrate layer and the weld overlay layer.

[0012] Optionally, the surface of the weld overlay has uniformly distributed fine cracks, the width of which does not exceed 0.05 mm and the depth does not exceed 1 / 3 of the thickness of the weld overlay. The fine cracks release residual welding stress without affecting the overall wear resistance of the weld overlay.

[0013] Optionally, the liner has a through-hole, and the trolley funnel has a positioning hole corresponding to the through-hole. The liner and the trolley funnel are fixedly connected by bolts through the through-hole and the positioning hole.

[0014] Optionally, the mounting holes are configured as several groups, with the groups of mounting holes evenly spaced apart, and the mounting holes correspond one-to-one with the positioning holes.

[0015] In summary, this utility model has the following beneficial effects:

[0016] The base layer and the weld overlay layer are formed into an integral structure using a multi-layer weld overlay process. Each weld overlay layer is tightly bonded to the adjacent layer and the base layer, forming a continuous and dense composite structure. This composite structure allows the base layer and the weld overlay layer to work together and jointly withstand the impact of materials. The low-carbon steel of the base layer has good toughness and can absorb and disperse impact energy; while the chromium carbide alloy layer of the weld overlay layer has high hardness and can resist direct impact and wear from materials. This greatly enhances the impact resistance of the liner, reduces deformation and cracking caused by material impact, ensures the normal use of the hopper, and avoids environmental pollution and material waste caused by material leakage. Attached Figure Description

[0017] Figure 1 This is a top view of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model.

[0019] Figure 3 This is a cross-sectional view of the weld overlay structure of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1-substrate layer, 2-weld overlay layer, 3-metallurgical bonding interface, 4-fine crack, 5-mounting hole. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example:

[0023] like Figures 1-3 As shown, this utility model provides a wear-resistant trolley funnel liner.

[0024] The liner includes a base layer 1 and a weld overlay layer 2. The weld overlay layer 2 is welded to the surface of the base layer 1. The base layer 1 and the weld overlay layer 2 are formed into an integral structure using a multi-layer weld overlay process. Each layer of the weld overlay layer 2 is tightly bonded to the adjacent layer and the base layer 1, forming a continuous and dense composite structure. The base layer 1 is a low-carbon steel layer with a thickness ranging from 8mm to 15mm to ensure that the liner has sufficient strength and toughness to withstand material impact. The weld overlay layer 2 is a chromium carbide alloy layer, in which chromium carbide is present. The content of the phase accounts for 40% - 60% of the total volume of the weld overlay 2 to provide good wear resistance.

[0025] The multi-layer welding process is used to tightly bond the substrate layer 1 and the weld overlay layer 2 to form a continuous and dense composite structure. This structure can give full play to the performance advantages of the substrate layer 1 and the weld overlay layer 2, and improve the overall performance stability of the liner.

[0026] The low-carbon steel layer has good strength and toughness, and its thickness is set in the range of 8mm-15mm. This ensures that the liner has sufficient strength and toughness as a whole, while reasonably controlling the weight of the liner. This meets the requirements for withstanding material impact and avoids other problems caused by excessive weight.

[0027] Chromium carbide alloy layers have excellent wear resistance. The phase content accounts for 40%-60% of the total volume of the weld overlay 2. This proportion can ensure that the weld overlay 2 provides good wear resistance, effectively resists frequent friction between materials and liners, extends the service life of liners, and reduces maintenance costs and downtime.

[0028] Optionally, the total thickness of the weld overlay 2 is 6mm-12mm, and it is divided into 3-5 layers for weld overlay, with each layer of the weld overlay 2 having a uniform thickness.

[0029] The total thickness of the weld overlay 2 is 6mm - 12mm. This thickness range ensures that the weld overlay 2 has sufficient thickness to provide wear resistance, while avoiding excessive thickness that would increase the overall weight of the liner and raise the cost of weld overlay.

[0030] The welding process is divided into 3 to 5 layers with uniform thickness, which helps to control heat input and deformation during the welding process, ensures the quality and performance stability of the weld layer 2, and the uniform layer thickness can make the stress distribution more uniform, reduce stress concentration, and further improve the reliability and service life of the liner.

[0031] Optionally, a metallurgical bonding interface 3 is formed between the substrate layer 1 and the weld overlay layer 2, where elements diffuse into each other to form a transition region. The thickness of the transition region is 0.1 mm - 0.3 mm, which enhances the bonding strength between the substrate layer 1 and the weld overlay layer 2.

[0032] A metallurgical bonding interface 3 is formed between the substrate layer 1 and the weld overlay layer 2. Elements diffuse into each other at the interface to form a transition area with a thickness of 0.1mm-0.3mm. The metallurgical bonding enables a strong bond between the substrate layer 1 and the weld overlay layer 2. The presence of the transition area further enhances the bonding strength between the two, effectively preventing delamination and peeling between the substrate layer 1 and the weld overlay layer 2 during use, and ensuring the overall integrity and performance stability of the liner.

[0033] Optionally, the surface of the weld overlay 2 has uniformly distributed fine cracks 4. The width of the fine cracks 4 does not exceed 0.05 mm and the depth does not exceed 1 / 3 of the thickness of the weld overlay 2. The fine cracks 4 release residual welding stress without affecting the overall wear resistance of the weld overlay 2.

[0034] The surface of the weld overlay 2 has uniformly distributed fine cracks 4. The width of these fine cracks 4 does not exceed 0.05 mm and the depth does not exceed 1 / 3 of the thickness of the weld overlay 2. Without affecting the overall wear resistance of the weld overlay 2, the fine cracks 4 can release the residual stress of welding. Residual stress is generated during the welding process. If it is not released in time, it will lead to cracking and other problems in the weld overlay 2 during use. The presence of fine cracks 4 can effectively alleviate the residual stress, improve the crack resistance of the liner, and extend its service life.

[0035] Optionally, the liner has a through hole 5, and the trolley funnel has a positioning hole corresponding to the mounting hole 5. The liner and the trolley funnel are fixedly connected by bolts through the mounting hole 5 and the positioning hole.

[0036] A mounting hole 5 is made through the liner plate, and a positioning hole corresponding to the mounting hole 5 is made on the trolley funnel. The liner plate is fixedly connected to the trolley funnel by bolts. The connection method is simple and reliable, which can ensure that the liner plate will not be displaced or loosened during use, and ensure the normal operation of the funnel. At the same time, the bolt connection facilitates the installation and disassembly of the liner plate. When the liner plate is worn and needs to be replaced, the operation can be completed quickly, reducing downtime.

[0037] Optionally, the mounting holes 5 are configured in several groups, with the groups of mounting holes 5 evenly spaced apart, and the mounting holes 5 correspond one-to-one with the positioning holes.

[0038] The mounting holes 5 are set in several groups and evenly spaced. The mounting holes 5 correspond one-to-one with the positioning holes. The evenly spaced mounting holes 5 can make the liner plate be subjected to a uniform fixing force on the trolley funnel, avoiding deformation or connection failure of the liner plate due to excessive or insufficient local force. At the same time, the one-to-one correspondence between the mounting holes 5 and the positioning holes can ensure the accuracy of the liner plate installation, improve installation efficiency and quality, and ensure the overall performance of the funnel.

[0039] In this application, the weld overlay layer 2 is a chromium carbide alloy layer, and the chromium carbide layer is... The content of the phase accounts for 40% - 60% of the total volume of the weld overlay layer 2, chromium carbide. The phase has extremely high hardness and wear resistance, which can effectively resist the frequent friction between the material and the liner. During the material transportation process, whether it is granular or blocky material, it cannot easily wear down the weld overlay layer 2, which greatly extends the service life of the liner, reduces the replacement frequency caused by liner wear, and reduces maintenance costs and downtime.

[0040] The total thickness of the weld overlay 2 is 6mm-12mm, and it is divided into 3-5 layers for overlay welding. Each layer has a uniform thickness. The layered overlay design allows each layer of weld overlay 2 to fully exert its wear resistance. At the same time, the uniform layer thickness ensures that the stress distribution inside the weld overlay 2 is uniform, avoiding premature wear or damage caused by local stress concentration, and further enhancing the wear resistance of the weld overlay 2.

[0041] The base layer 1 is made of low carbon steel. Low carbon steel has a relatively low density. Compared with ordinary steel or cast iron, the low carbon steel layer can effectively reduce the weight of the liner while meeting the overall strength and toughness requirements of the liner. This not only reduces the overall weight of the trolley and improves transportation efficiency, but also reduces the requirements for the trolley's load-bearing capacity and power system, thus reducing the trolley's energy consumption and operating costs.

[0042] The base material layer 1 and the weld overlay layer 2 are formed into an integral structure using a multi-layer weld overlay process. Each weld overlay layer 2 is tightly bonded to the adjacent layer and the base material layer 1, forming a continuous and dense composite structure. This composite structure allows the base material layer 1 and the weld overlay layer 2 to work together and withstand the impact of materials. The low-carbon steel of the base material layer 1 has good toughness and can absorb and disperse impact energy; while the chromium carbide alloy layer of the weld overlay layer 2 has high hardness and can resist direct impact and wear of materials. This greatly enhances the impact resistance of the liner, reduces deformation and cracking caused by material impact, ensures the normal use of the hopper, and avoids environmental pollution and material waste caused by material leakage.

[0043] A metallurgical bonding interface 3 is formed between the substrate layer 1 and the weld overlay layer 2. Elements diffuse into each other at the interface to form a transition region with a thickness of 0.1mm-0.3mm. The metallurgical bonding forms a strong bond between the substrate layer 1 and the weld overlay layer 2. The existence of the transition region further enhances the bonding strength between the two. When subjected to material impact, this strong bond can prevent delamination and peeling between the substrate layer 1 and the weld overlay layer 2, ensuring the overall integrity and impact resistance of the liner.

[0044] The surface of the weld overlay 2 has uniformly distributed fine cracks 4. The width of these fine cracks 4 does not exceed 0.05 mm and the depth does not exceed 1 / 3 of the thickness of the weld overlay 2. During the welding process, due to the uneven heat input and cooling rate, residual stress will be generated inside the weld overlay 2. If these residual stresses are not released in time, they may cause cracking problems during use. The presence of fine cracks 4 provides a channel for releasing residual stress. Without affecting the overall wear resistance of the weld overlay 2, it effectively alleviates residual stress, improves the crack resistance of the liner, and further enhances the reliability and service life of the liner.

[0045] A mounting hole 5 is made through the liner plate, and a positioning hole corresponding to the mounting hole 5 is made on the trolley funnel. The liner plate is fixedly connected to the trolley funnel by bolts. The connection method is simple and reliable, which can ensure that the liner plate will not be displaced or loosened during use, and ensure the normal operation of the funnel. At the same time, the bolt connection facilitates the installation and removal of the liner plate. When the liner plate is worn and needs to be replaced, the old liner plate can be removed and the new liner plate can be installed simply by loosening the bolts. The operation is simple and quick, which greatly reduces downtime and improves production efficiency.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wear-resistant trolley funnel liner, characterized in that, The liner includes a base layer and a weld overlay layer. The weld overlay layer is welded to the surface of the base layer. The base layer and the weld overlay layer are formed into an integral structure using a multi-layer weld overlay process. Each weld overlay layer is tightly bonded to the adjacent layer and the base layer, forming a continuous and dense composite structure. The base layer is made of low-carbon steel with a thickness ranging from 8mm to 15mm to ensure that the liner has sufficient strength and toughness to withstand material impact. The weld overlay layer is made of chromium carbide alloy, wherein chromium carbide is present in the chromium carbide alloy layer. The content of the phase accounts for 40% - 60% of the total volume of the weld overlay to provide good wear resistance.

2. The wear-resistant trolley funnel liner according to claim 1, characterized in that, The total thickness of the weld overlay is 6mm-12mm, and it is divided into 3-5 layers for weld overlay, with each layer having a uniform thickness.

3. The wear-resistant trolley funnel liner according to claim 1, characterized in that, A metallurgical bonding interface is formed between the substrate layer and the weld overlay layer. Elements diffuse into each other at the metallurgical bonding interface to form a transition region with a thickness of 0.1 mm to 0.3 mm, thereby enhancing the bonding strength between the substrate layer and the weld overlay layer.

4. The wear-resistant trolley funnel liner according to claim 1, characterized in that, The surface of the weld overlay has uniformly distributed fine cracks. The width of the fine cracks does not exceed 0.05 mm and the depth does not exceed 1 / 3 of the thickness of the weld overlay. The fine cracks release residual welding stress without affecting the overall wear resistance of the weld overlay.

5. The wear-resistant trolley funnel liner according to claim 1, characterized in that, The liner has a through hole, and the trolley funnel has a positioning hole corresponding to the mounting hole. The liner and the trolley funnel are fixedly connected by bolts through the mounting hole and the positioning hole.

6. The wear-resistant trolley funnel liner according to claim 5, characterized in that, The mounting holes are set in several groups, and the mounting holes in the several groups are evenly spaced apart. The mounting holes are set in a one-to-one correspondence with the positioning holes.

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