Wear-resistant ceramic welding backing

Abstract

The utility model discloses a wear-resistant ceramic welding backing, which relates to the technical field of welding and comprises a ceramic backing body, the ceramic backing body comprises a backing main body, a welding groove is formed at the top end of the backing main body, and tin foil paper and adhesive paper are arranged at the bottom end of the backing main body. The outer wall of the gasket body is sequentially covered with a metal reinforcing layer and a whisker wear-resisting layer, and a rib wire assembly is laid in the gasket body. According to the wear-resistant ceramic welding backing ceramic, the outer wall of the backing body is sequentially covered with the metal reinforcing layer and the whisker wear-resistant layer, the metal reinforcing layer optimizes and improves the mixing proportion of silicon carbide and graphite, the hardness and the wear resistance of the ceramic are correspondingly improved, the whisker wear-resistant layer is made of calcium carbide whiskers, and the material is high in friction coefficient and good in wear resistance. The wear resistance and the heat resistance are high, and the wear resistance of the ceramic liner body is further improved; and by arranging the rib wire assembly, the whole ceramic gasket body can be completely taken down so as to be convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to a wear-resistant ceramic welding gasket. Background Technology

[0002] In welding processes, it is often necessary to butt weld two metal plates. Traditional welding processes use double-sided welding, welding one side and then flipping to weld the other side, which is both time-consuming and wasteful of materials. Now, single-sided welding with double-sided forming technology is often used. The specific process is as follows: an aluminum foil coated with self-adhesive is tightly attached to the back of the weld seam to form a welding backing, preventing the molten iron from flowing and forcing the back of the weld seam to form. Then, only one welding operation with a larger current is needed on the front of the metal plate to complete the entire weld seam. Compared with the previous double-sided welding, this process can save electricity, save labor time, and reduce costs. Among them, ceramic products have good high temperature resistance, and ceramic backings are currently commonly used.

[0003] Existing ceramic gaskets are mostly simple in structure, have poor process performance, poor back weld formation, and poor weld aesthetics. To overcome these defects, existing technology (Chinese patent application number 202223244755.5, application date 2022-12-02) provides a ceramic gasket for deep penetration arc welding. This device uses a fiber layer and two adhesive strips to attach the strip gasket groove along the length of the weld to the steel plate. After the protective layer on the adhesive layer is removed, the ceramic gasket can be removed after welding. This device has a simple structure, low manufacturing cost, simple process, and good back weld formation, which greatly improves the welding quality. However, existing ceramic gaskets still have the defect of insufficient wear resistance during use, and the gasket is prone to cracking when heated. During the process of removing the gasket after welding, some of it may peel off and crumble, making it difficult to remove.

[0004] To address the aforementioned issues, innovative design based on existing equipment is urgently needed. Therefore, we have proposed a wear-resistant ceramic welding gasket that can effectively solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant ceramic welding gasket to solve the problems mentioned in the background art, such as insufficient wear resistance of existing ceramic gaskets during use, easy cracking of the gasket when heated, and the difficulty in removing the gasket after welding due to partial peeling and crushing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant ceramic welding pad, comprising a ceramic pad body, the ceramic pad body including a pad main body, the top end of the pad main body having a concave arc-shaped welding groove, the bottom end of the pad main body being fixedly connected to tin foil, the top of the tin foil being coated with adhesive and having adhesive paper attached, the outer wall of the pad main body being sequentially covered with a metal reinforcing layer and a whisker wear-resistant layer, the metal reinforcing layer having an optimized and improved mixing ratio of silicon carbide and graphite compared to the materials used in the pad main body, resulting in a corresponding increase in ceramic hardness and wear resistance, the whisker wear-resistant layer being made of silicon carbide... Calcium whiskers, a material with a high coefficient of friction, excellent wear resistance, and high heat resistance, further enhance the wear resistance of the ceramic gasket body. This structure ensures that the ceramic gasket body remains firmly engaged between the weld seams of the two metal plates during welding, preventing leakage of molten metal and resulting in an unsightly weld back. The gasket body is internally reinforced with a rib assembly, which consists of through ribs, connecting ribs, and pull heads. Even if the ceramic gasket body cracks or partially peels off after welding due to heat, the rib assembly allows the entire ceramic gasket body to be removed intact for use.

[0007] Preferably, the inner hollow design of the pad body has a uniform thickness of the hollow outer wall.

[0008] Preferably, a center line is formed on the outer wall of the concave arc-shaped center of the welding groove, and the center line is painted with a bright paint color, such as red.

[0009] Preferably, the front and rear ends of the pad body are formed with symmetrically distributed positioning protrusions, and the edge of the two positioning protrusions that are close to each other has a rounded edge structure.

[0010] Preferably, a peeling gap is formed between the two positioning protrusions and both ends of the pad body, with the bottom of the peeling gap close to the bottom of the pad body.

[0011] Preferably, the through ribs pass through the front and rear ends of the pad body and are respectively distributed at the four corners of the pad body and the center of the top arc and bottom plane. The connecting ribs are evenly connected between all the through ribs, and the through rib located in the middle of the bottom extends out to the pull head. The end of the pull head passes through the pad body and the tin foil in sequence to the bottom outside.

[0012] Preferably, the top of the tin foil is provided with several sets of evenly intersecting wrinkle-reducing grooves, which are symmetrically distributed along the central axis of the tin foil.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This wear-resistant ceramic welding gasket, by sequentially covering the outer wall of the gasket body with a metal reinforcing layer and a whisker wear-resistant layer, optimizes and improves the mixing ratio of silicon carbide and graphite in the metal reinforcing layer, thereby increasing the ceramic hardness and wear resistance. The whisker wear-resistant layer uses calcium carbide whiskers, which have a high coefficient of friction, high wear resistance and heat resistance, further improving the wear resistance of the ceramic gasket body. By setting the rib assembly, the entire ceramic gasket body can be completely removed for easy use. The specific details are as follows: 1) By sequentially covering the outer wall of the pad body with a metal reinforcing layer and a whisker wear-resistant layer, the metal reinforcing layer optimizes and improves the mixing ratio of silicon carbide and graphite compared to the pad body, thereby increasing the ceramic hardness and wear resistance. The whisker wear-resistant layer uses calcium carbide whiskers, which have a high coefficient of friction and high wear resistance and heat resistance, thus further improving the wear resistance of the ceramic pad body. This structure can also ensure that the ceramic pad body is always firmly clamped between the weld seam of the two metal plates during the welding process, so as to prevent the molten metal from leaking and causing an unsightly appearance on the back of the weld.

[0014] By setting up a rib assembly, the connecting effect of several through ribs and connecting ribs can achieve a series connection of various parts of the liner body to prevent partial peeling and detachment. Moreover, during disassembly, the ceramic liner body and tin foil can be completely pulled off from the welded metal plate simply by pulling the pull head for easy use.

[0015] By securing the two positioning protrusions to the top and bottom of the metal plate, the stability of the ceramic gasket body in the weld can be further improved. Furthermore, the positioning protrusions' obstruction of the molten metal makes the welding surfaces at the top and bottom smoother. If the ceramic gasket body deforms due to heat during welding, causing the two positioning protrusions to become too tight, the two positioning protrusions can be directly pried off the gasket body through the peeling gap to facilitate the removal of the ceramic gasket body.

[0016] When peeling off the adhesive paper and attaching the aluminum foil to the back of the two metal plates, the wrinkle-retaining groove can accommodate the wrinkles that inevitably occur during the pasting process, and the wrinkles can be smoothed out near the wrinkle-retaining groove to increase the flatness of the aluminum foil on the metal plate, thereby further improving the stability of the ceramic gasket body between the weld seam. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall front view structure of this utility model;

[0018] Figure 2 This is a side view of the overall structure of this utility model;

[0019] Figure 3 This utility model Figure 2Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a cross-sectional structural diagram of the ceramic gasket body of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the reinforcing wire assembly of this utility model;

[0022] Figure 6 This is a schematic diagram of the separation structure of the tin foil and the adhesive paper of this utility model.

[0023] In the diagram: 1. Ceramic liner body; 101. Liner body; 102. Welding groove; 103. Marking center line; 104. Metal reinforcing layer; 105. Whisker wear-resistant layer; 106. Positioning protrusion; 107. Peeling gap; 2. Tin foil; 3. Adhesive paper; 4. Wrinkle-resistant groove; 5. Rib assembly; 501. Through rib; 502. Connecting rib; 503. Pull head. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-6 This utility model provides the following technical solution: a wear-resistant ceramic welding pad, comprising a ceramic pad body 1, the ceramic pad body 1 including a pad main body 101, the top end of the pad main body 101 having a concave arc-shaped welding groove 102, the bottom end of the pad main body 101 being fixedly connected to tin foil 2, the top of the tin foil 2 being coated with adhesive and having adhesive paper 3 bonded thereto, the outer wall of the pad main body 101 being sequentially covered with a metal reinforcing layer 104 and a whisker wear-resistant layer 105, the metal reinforcing layer 104 being relatively... Regarding the materials used in the pad body 101, the mixing ratio of silicon carbide and graphite is optimized and improved, and the ceramic hardness and wear resistance are correspondingly increased. The whisker wear layer 105 uses calcium carbide whiskers, which have a high coefficient of friction and high wear resistance and heat resistance, thereby further improving the wear resistance of the ceramic pad body 1. In addition, this structure can ensure that the ceramic pad body 1 is always firmly attached between the weld seam of the two metal plates during the welding process, so as to prevent the molten metal from leaking and causing an unsightly appearance on the back of the weld.

[0026] The internal hollow design of the pad body 101 and the uniform thickness of the hollow outer wall reduce the overall weight of the ceramic pad body 1, making it easier for users to attach the ceramic pad body 1 to the weld seam between the back of the two metal plates using tin foil 2. This also saves materials and reduces production costs. Furthermore, a center line 103 is formed on the outer wall of the concave arc-shaped center of the welding groove 102, and the center line 103 is painted with a bright paint color, such as red, so that users can easily judge whether the ceramic pad body 1 is properly attached by observing the position of the center line 103 between the weld seams.

[0027] In addition, the front and rear ends of the gasket body 101 are formed with symmetrically distributed positioning protrusions 106. The edge of the two positioning protrusions 106 that are close to each other is rounded. By clamping the two positioning protrusions 106 along the arc edge to the top and bottom of the metal plate, not only can the stability of the ceramic gasket body 1 in the weld be further improved, but also the welding surface at the top and bottom can be made flatter due to the blocking of the molten metal by the positioning protrusions 106. Furthermore, a peeling gap 107 is formed between the two positioning protrusions 106 and the two ends of the gasket body 101. The bottom of the peeling gap 107 is close to the bottom of the gasket body 101. If the ceramic gasket body 1 is deformed by heat during the welding process, causing the two positioning protrusions 106 to be clamped too tightly, the two positioning protrusions 106 can be directly pried off from the gasket body 101 through the peeling gap 107 to facilitate the removal of the ceramic gasket body 1.

[0028] Example 2: Based on Example 1, a reinforcing wire assembly 5 is laid inside the pad body 101. The reinforcing wire assembly 5 consists of a through reinforcing wire 501, a connecting reinforcing wire 502, and a pull head 503. Even if the ceramic pad body 1 cracks or even partially peels off due to heat after welding, the entire ceramic pad body 1 can be completely removed for use thanks to the connecting action of the reinforcing wire assembly 5. Specifically, the through reinforcing wire 501 runs through the front and rear ends of the pad body 101 and is distributed at the four corners, the top arc, and the bottom plane of the pad body 101. At the center, the connecting rib 502 is evenly connected between all the through ribs 501, and the through rib 501 located in the middle of the bottom extends into a pull head 503. The end of the pull head 503 passes through the pad body 101 and the tin foil 2 to the bottom outside in sequence. Through the connection of several through ribs 501 and connecting ribs 502, the pad body 101 can be connected in series to prevent partial peeling and falling off. When disassembling, the ceramic pad body 1 and the tin foil 2 can be completely pulled off from the welded metal plate simply by pulling the pull head 503.

[0029] In addition, the top of the tin foil 2 is provided with several sets of evenly arranged wrinkle-reducing grooves 4. The wrinkle-reducing grooves 4 are symmetrically distributed along the central axis of the tin foil 2. When the adhesive paper 3 is peeled off and the tin foil 2 is glued to the back of the two metal plates, the wrinkle-reducing grooves 4 can accommodate the wrinkles that inevitably occur during the glue-on process. The wrinkles can be smoothed out near the wrinkle-reducing grooves 4 to increase the flatness of the tin foil 2 glued to the metal plate, thereby further improving the stability of the ceramic gasket body 1 between the weld seam.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wear-resistant ceramic welding pad, comprising a ceramic pad body (1), the ceramic pad body (1) comprising a pad main body (101), the top end of the pad main body (101) being formed with an inwardly concave arc-shaped welding groove (102), the bottom end of the pad main body (101) being fixedly connected with tin foil (2), and the top of the tin foil (2) being coated with adhesive and having adhesive paper (3) bonded to it. Its features are: The outer wall of the pad body (101) is sequentially covered with a metal reinforcing layer (104) and a whisker wear-resistant layer (105), wherein the whisker wear-resistant layer (105) is made of calcium carbide whiskers; The interior of the pad body (101) is provided with a rib assembly (5), which consists of a through rib (501), a connecting rib (502), and a pull head (503) to allow the entire ceramic pad body (1) to be completely removed for use.

2. The wear-resistant ceramic welding gasket according to claim 1, characterized in that: The inner hollow design of the pad body (101) and the thickness of the hollow outer wall are uniform.

3. The wear-resistant ceramic welding gasket according to claim 1, characterized in that: A center line (103) is formed on the outer wall of the concave arc-shaped center of the welding groove (102), and the center line (103) is coated with a bright paint color, such as red.

4. The wear-resistant ceramic welding gasket according to claim 2, characterized in that: The front and rear ends of the pad body (101) are formed with symmetrically distributed positioning protrusions (106), and the edge of the two positioning protrusions (106) that are close to each other is a rounded edge structure.

5. The wear-resistant ceramic welding gasket according to claim 4, characterized in that: A peeling gap (107) is formed between the two positioning protrusions (106) and the two ends of the pad body (101), with the bottom of the peeling gap (107) close to the bottom of the pad body (101).

6. The wear-resistant ceramic welding gasket according to claim 1, characterized in that: The through rib (501) runs through the front and rear ends of the pad body (101) and is distributed at the four corners of the pad body (101) and the center of the top arc and the bottom plane. The connecting rib (502) is evenly connected between all the through ribs (501), and the through rib (501) located in the middle of the bottom extends out to the pull head (503). The end of the pull head (503) passes through the pad body (101) and the tin foil (2) to the bottom outside in sequence.

7. The wear-resistant ceramic welding gasket according to claim 1, characterized in that: The top of the tin foil (2) is provided with several sets of uniformly cross-arranged wrinkle-reducing grooves (4), which are symmetrically distributed along the central axis of the tin foil (2).

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