A type of weld overlay wear-resistant plate

Abstract

This utility model discloses a weld overlay wear-resistant plate, comprising a plate body with an alloy weld overlay layer on its surface. Through holes are formed within the plate body and the alloy weld overlay layer. A countersunk column is fixedly connected within the through holes, with its sidewall fixedly connected to the inner wall of the plate body. A countersunk hole is formed within the countersunk column. An alloy layer is fixedly connected to the inner wall of the through holes, with its sidewall fitting against the inner wall of the alloy weld overlay layer. The surface of the alloy layer is flush with the surface of the alloy weld overlay layer, and the bottom surface of the alloy layer is located at the countersunk head position on the surface of the countersunk column. The height of the countersunk column is equal to the height of the plate body. The advantages of this utility model include: a reasonable structural design, ingenious concept, ease of processing, low manufacturing cost, high processing precision, and improved overall service life of the weld overlay wear-resistant plate.

Description

Technical Field

[0001] This utility model relates to the field of wear-resistant plate overlay welding technology, specifically to an overlay welding wear-resistant plate. Background Technology

[0002] Welded wear-resistant plates are composite wear-resistant plates formed by welding 40-60% chromium carbide alloy welding wire onto a suitable steel substrate using open arc welding. The welded layer has a uniform material and regular appearance. The carbides in the wear-resistant layer's metallographic structure are distributed in a fibrous manner and perpendicular to the surface, achieving a surface hardness of HRC56 or higher. Suitable for environments with extremely severe wear, composite wear-resistant plates feature high wear resistance, impact resistance, and ease of processing. They can be welded to other structural components and are widely used in industries such as ports, docks, metallurgy, cement, coal, power, mining, steel, building materials, and brick and tile manufacturing. Compared to other wear-resistant materials, they offer a higher cost-performance ratio.

[0003] Users typically use countersunk bolts for fastening when using weld overlay wear-resistant plates, mainly to reduce erosion and wear from materials, thus extending the overall service life of the plates. However, due to the high surface hardness of weld overlay wear-resistant plates, countersunk holes are difficult to create. Traditional drilling machines cannot be used, and manual plasma machining cannot directly produce countersunk holes. A small-diameter through hole must first be cut, followed by machining the larger diameter using carbon arc gouging. Furthermore, the dimensional errors in the cut countersunk holes are significant, affecting installation and use. Utility Model Content

[0004] The purpose of this utility model is to provide a weld overlay wear-resistant plate with a reasonable structural design, ingenious concept, easy processing, low processing cost, high processing precision, and improved overall service life of the weld overlay wear-resistant plate.

[0005] This utility model discloses a wear-resistant plate with weld overlay, comprising a plate body, an alloy weld overlay layer on the surface of the plate body, and through holes in the plate body and the alloy weld overlay layer; a countersunk column is fixedly connected in the through hole, the side wall of the countersunk column is fixedly connected to the inner wall of the plate body, and a countersunk hole is provided in the countersunk column.

[0006] A through hole is cut at the countersunk hole installation location of the wear-resistant plate. The diameter of the through hole is larger than the diameter of the countersunk hole column. The countersunk hole column is machined, and its internal structure is consistent with the countersunk hole requirements in the drawing. The height of the countersunk hole column is less than the thickness of the plate. Welding bevels are machined on the upper and lower end faces of the countersunk hole column. The countersunk hole column is placed into the through hole. An alloy overlay layer is welded on the surface of the plate. The countersunk head of the countersunk hole column is set in the direction of the alloy overlay layer on the surface of the plate. The bottom of the countersunk hole column is flush with the bottom surface of the plate base material. The countersunk hole column is welded firmly to the plate. The processing technology is convenient and easy to process.

[0007] An alloy layer is fixedly connected to the inner wall of the through hole. The side wall of the alloy layer is attached to the inner wall of the alloy weld overlay layer. The surface of the alloy layer is flush with the surface of the alloy weld overlay layer. The bottom surface of the alloy layer is located at the countersunk head position on the surface of the countersunk hole column.

[0008] An alloy layer is set up, and a ring of alloy layer is welded between the countersunk column and the through hole. The alloy composition of the alloy layer and the alloy weld layer are similar, and the welded part is ground flat to ensure that the thickness of the countersunk column and the alloy layer is basically the same as the thickness of the plate and the alloy weld layer. The countersunk hole of the wear-resistant plate made in this way not only accurately controls the installation dimensions, but also improves the overall service life of the welded wear-resistant plate.

[0009] The height of the countersunk hole column is the same as the height of the plate.

[0010] The thickness of the plate is greater than the thickness of the alloy weld overlay.

[0011] The beneficial effects of this utility model are:

[0012] 1) Cut through holes at the countersunk hole installation location of the wear-resistant plate. The diameter of the through holes is larger than the diameter of the countersunk hole column. Machin the countersunk hole column. The internal structure of the countersunk hole column is consistent with the countersunk hole requirements in the drawing. The height of the countersunk hole column is less than the thickness of the plate. Weld bevels are machined on the upper and lower end faces of the countersunk hole column. Place the countersunk hole column into the through hole. The surface of the plate is welded with an alloy overlay layer. The countersunk head of the countersunk hole column is set in the direction of the alloy overlay layer on the surface of the plate. The bottom of the countersunk hole column is flush with the bottom surface of the plate base material. Weld the countersunk hole column to the plate firmly. The processing technology is convenient and easy to process.

[0013] 2) An alloy layer is set up between the countersunk column and the through hole. The alloy composition of the alloy layer and the alloy weld overlay layer are similar. The welded parts are ground flat to ensure that the thickness of the countersunk column and the alloy layer is basically the same as the thickness of the plate and the alloy weld overlay layer. The countersunk holes of the wear-resistant plate made in this way not only accurately control the installation dimensions, but also improve the overall service life of the weld overlay wear-resistant plate.

[0014] 3) The pre-machined countersunk pin is welded and fixed into the through hole of the wear-resistant plate, which solves the problem of difficult countersunk hole production in wear-resistant plates. First, when cutting the wear-resistant plate, CNC plasma cutting is used to directly cut the through hole for the installation and positioning of the countersunk pin. Then, the countersunk pin is machined on a lathe and welded and fixed into the cut through hole. Finally, an alloy layer is deposited on the surface of the countersunk pin. The countersunk hole of the wear-resistant plate produced in this way not only accurately controls the installation dimensions, but also improves the overall service life of the wear-resistant plate. The structure is reasonable, ingenious, easy to process, low in processing cost, and high in processing precision. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the countersunk hole column in this utility model.

[0017] In the figure: Plate 1, Alloy weld overlay 101, Through hole 2, Countersunk hole 3, Countersunk hole column 4, Alloy layer 5. Detailed Implementation

[0018] Example 1.

[0019] The following will be combined with the appendix Figure 1-2 The present invention will be further described below.

[0020] This utility model includes a plate body 1, an alloy weld overlay layer 101, a through hole 2, a countersunk hole 3, and a countersunk hole column 4. The specific structure includes a plate body 1, an alloy weld overlay layer 101 on the surface of the plate body 1, a through hole 2 in the plate body 1 and the alloy weld overlay layer 101, a countersunk hole column 4 fixedly connected in the through hole 2, the side wall of the countersunk hole column 4 fixedly connected to the inner wall of the plate body 1, and a countersunk hole 3 in the countersunk hole column 4.

[0021] The height of the countersunk column 4 is the same as the height of the plate 1.

[0022] The thickness of the plate 1 is greater than the thickness of the alloy weld overlay 101.

[0023] The plate 1 is a steel plate.

[0024] Instructions for use: The method for making the countersunk hole 3 includes cutting a through hole 2 in the wear-resistant plate, the through hole 2 being slightly larger than the diameter of the countersunk hole post 4, turning the countersunk hole post 4, the internal structure of the countersunk hole post 4 being consistent with the countersunk hole dimensions in the drawing, the height of the countersunk hole post 4 being less than the thickness of the plate 1, machining and welding bevels on the upper and lower end faces of the countersunk hole post 4, welding and fixing the countersunk hole post 4 into the through hole 2 in the plate 1, the countersunk hole direction of the countersunk hole post 4 being consistent with the direction of the wear-resistant layer, and the bottom of the countersunk hole post 4 being flush with the bottom surface of the plate 1.

[0025] The diameter of the through hole 2 on the plate 1 is 0.5mm larger than the diameter of the countersunk pin 4, which facilitates the insertion of the countersunk pin 4 into the through hole 2. First, a through hole 2 is cut and machined on the plate 1, and then the machined countersunk pin 4 is placed into the through hole 2. The top and bottom surfaces are welded firmly. The diameter of the through hole 2 is 0.5mm larger than the diameter of the countersunk pin 4, which facilitates the fixing and installation of the countersunk pin 4.

[0026] The internal structure of the countersunk column 4 is consistent with the countersunk dimensions required by the drawing. Its outer diameter is 10-12mm larger than that of the countersunk hole 3, and its height is 2-3mm smaller than that of the plate 1 and the alloy weld overlay 101. A 3*45° welding bevel is machined on the upper and lower end faces.

[0027] Example 2.

[0028] This utility model includes a plate body 1, a through hole 2, a countersunk hole 3, a countersunk hole column 4, and an alloy layer 5. The specific structure includes a plate body 1, a countersunk hole column 4 fixedly connected inside the plate body 1, a through hole 2 provided inside the countersunk hole column 4, a countersunk hole 3 provided on the surface of the through hole 2, and an alloy weld overlay layer 101 provided on the surface of the plate body 1.

[0029] The inner wall of the through hole 2 is fixedly connected with an alloy layer 5. The side wall of the alloy layer 5 is attached to the inner wall of the alloy weld overlay layer 101. The surface of the alloy layer 5 is flush with the surface of the alloy weld overlay layer 101. The bottom surface of the alloy layer 5 is located at the countersunk position on the surface of the countersunk column 4.

[0030] The height of the countersunk column 4 is the same as the height of the plate 1.

[0031] The thickness of the plate 1 is greater than the thickness of the alloy weld overlay 101.

[0032] The plate 1 is a steel plate.

[0033] Instructions for use: The method for making the countersunk hole 3 includes cutting a through hole 2 on the wear-resistant plate 1, the through hole 2 being slightly larger than the diameter of the countersunk hole post 4, machining the countersunk hole post 4, the internal structure of the countersunk hole post 4 being consistent with the countersunk hole dimensions in the drawing, the height of the countersunk hole post 4 being less than the thickness of the plate 1 and the alloy weld overlay layer 101, machining welding bevels on the upper and lower end faces of the countersunk hole post 4, welding the countersunk hole post 4 into the through hole 2 of the plate 1, the countersunk hole direction of the countersunk hole post 4 being consistent with the direction of the alloy weld overlay layer 101, the bottom of the countersunk hole post 4 being flush with the bottom surface of the plate 1, and welding a ring of alloy layer 5 with a thickness of 2-3mm between the countersunk head of the countersunk hole post 4 and the through hole 2, the alloy composition being similar to that of the alloy weld overlay layer 101 of the plate 1, and finally grinding the welded part of the countersunk hole post 4 flat to ensure that the thickness of the countersunk hole post 4 and the alloy layer 5 is basically consistent with the thickness of the plate 1 and the alloy weld overlay layer 101.

[0034] The diameter of the through hole 2 on the plate 1 is 0.5 mm larger than the diameter of the countersunk pin 4, which makes it easier to insert the countersunk pin 4 into the through hole 2. First, a through hole 2 is cut and machined on the plate 1, and then the machined countersunk pin 4 is placed into the through hole 2. The top and bottom surfaces are welded firmly. The diameter of the through hole 2 is 0.5 mm larger than the diameter of the countersunk pin 4, which makes it easier to fix and install the countersunk pin 4.

[0035] The internal structure of the countersunk column 4 is consistent with the countersunk hole size required by the drawing. Its outer diameter is 10-12mm larger than the diameter of the countersunk hole 3, and its height is 2-3mm smaller than the thickness of the plate 1 and the alloy weld overlay 101. A 3*45° welding bevel is machined on the upper and lower end faces.

[0036] An alloy layer 5 is set up, and a ring of alloy layer 5 is welded between the countersunk head of the countersunk column 4 and the through hole 2. The alloy layer 5 has a similar alloy composition to the alloy weld overlay layer 101, which includes C, Mn, Si, and Cr. The welded part is ground flat to ensure that the thickness of the countersunk column 4 and the alloy layer 5 is basically the same as the thickness of the plate body 1 and the alloy weld overlay layer 101. The countersunk hole 2 of the wear-resistant plate made in this way not only accurately controls the installation size, but also improves the overall service life of the weld overlay wear-resistant plate.

Claims

1. A hardfacing wear plate, characterized by: The plate (1) includes an alloy weld overlay layer (101) on its surface and through holes (2) in the plate (1) and the alloy weld overlay layer (101). A countersunk column (4) is fixedly connected in the through hole (2), and the side wall of the countersunk column (4) is fixedly connected to the inner wall of the plate (1). A countersunk hole (3) is provided in the countersunk column (4).

2. A hardfacing wear plate as claimed in claim 1 wherein: The inner wall of the through hole (2) is fixedly connected with an alloy layer (5). The side wall of the alloy layer (5) is attached to the inner wall of the alloy weld overlay layer (101). The surface of the alloy layer (5) is flush with the surface of the alloy weld overlay layer (101). The bottom surface of the alloy layer (5) is located at the countersunk position on the surface of the countersunk column (4).

3. A hardfacing wear plate as claimed in claim 2 wherein: The height of the countersunk column (4) is the same as the height of the plate (1).

4. A hardfacing wear plate as claimed in claim 3 wherein: The thickness of the plate (1) is greater than the thickness of the alloy weld overlay (101).

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