Wear-resistant tile for spiral pusher of horizontal centrifuge

Abstract

The utility model discloses a wear-resistant tile for a spiral pusher of a horizontal centrifugal machine, which comprises a laser cladding area, the laser cladding area is a hard alloy welding-on area on the wear-resistant tile for the spiral pusher of the horizontal centrifugal machine, a groove is arranged at the joint of the welding-on area and a tile base body, the welding-on area is a plane arc-shaped area, and the welding-on area is a plane arc-shaped area. The laser cladding area and the inclined face of the groove are covered with a plurality of arc-shaped laser cladding layers which are arranged in a lap joint mode, the starting point and the end point of each arc-shaped laser cladding layer are located on the two straight line side edges of the plane arc-shaped area respectively, and the arc-shaped laser cladding layers and the plane arc-shaped area are arranged in the same arc center. An end face laser cladding layer is arranged on the tile base body connected with the arc-shaped edge of the plane arc-shaped area, and a back face laser cladding layer is arranged on the back face outer arc area of the tile base body connected with the end face laser cladding layer. Abrasion of the back face of the end can be effectively avoided by adopting the structure. And the laser cladding layer has high hardness and toughness, so that fracture and peeling can be avoided.

Description

Technical Field

[0001] This utility model relates to a wear-resistant tile, and more particularly to a wear-resistant tile for a horizontal centrifuge screw feeder. Background Technology

[0002] Horizontal centrifuges separate solids from liquids during production processes. The separation is controlled by adjusting the rotation speed. Under centrifugal force, denser solids accumulate on the rotating drum wall, while less dense liquids form concentric inner layers within the centrifuge, achieving solid-liquid separation. The precipitate formed by solid particles is continuously removed by a screw conveyor. However, during long-term operation, the screw conveyor plates continuously compress and wear against the solid particle precipitate, eventually leading to dimensional loss, reduced separation efficiency, and ultimately, failure to achieve the desired separation effect. To ensure production, the screw conveyor plates need to be replaced periodically. Figure 1 The tile shown needs to be made into a wear-resistant tile to extend its wear-resistant life and reduce the frequency of replacement. Currently, most wear-resistant tiles use a method of welding hard alloy 1 into the wear-resistant area, but due to its high brittleness, it often experiences localized breakage and peeling during use. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a wear-resistant tile for a horizontal centrifuge screw feeder that can effectively avoid wear on the back of the end and prevent damage to the laser cladding layer.

[0004] To achieve the above functions, the technical solution adopted by this utility model is: to provide a wear-resistant tile for a horizontal centrifuge screw feeder.

[0005] This utility model discloses a wear-resistant tile for a horizontal centrifuge screw feeder, comprising a laser cladding area, which is a hard alloy inlay welding area on the wear-resistant tile for the horizontal centrifuge screw feeder. A bevel is formed at the connection between the inlay welding area and the tile substrate. The inlay welding area is a planar arc-shaped region. Multiple overlapping arc-shaped laser cladding layers are covered on the laser cladding area and the beveled surface. The starting point and ending point of each arc-shaped laser cladding layer are located at the two straight sides of the planar arc-shaped region, and the multiple arc-shaped laser cladding layers are all set with the same arc center as the planar arc-shaped region. An end face laser cladding layer is provided on the tile substrate that connects to the arc edge of the planar arc-shaped region, and a back face laser cladding layer is provided on the outer arc area of ​​the back side of the tile substrate that connects to the end face laser cladding layer.

[0006] Compared with the prior art, the advantages of this utility model are:

[0007] (1) Compared with the existing technology of inlaid hard alloy, the wear-resistant layer of laser cladding has a larger protection area for the end of the tile, achieving full wrapping and effectively avoiding wear on the back of the end;

[0008] (2) The laser cladding layer has high hardness and toughness, which can prevent cracking and peeling. Attached Figure Description

[0009] Figure 1 This is a side view of existing technology for inlaying cemented carbide.

[0010] Figure 2 This is a side view of the unprocessed structure of the wear-resistant tile sheet for the screw feeder of the horizontal centrifuge of this utility model;

[0011] Figure 3 yes Figure 2 Top view of the structure shown;

[0012] Figure 4 This is a side view schematic diagram of the multi-arc laser cladding layer structure in this utility model;

[0013] Figure 5 yes Figure 4 Top view of the structure shown;

[0014] Figure 6 yes Figure 4 The diagram shows a side view of the structure with a laser cladding layer on the back.

[0015] Figure 7 This is a side view of the wear-resistant tile for the screw feeder of a horizontal centrifuge according to this utility model. Detailed Implementation

[0016] The structure of this utility model will be described below with reference to the accompanying drawings.

[0017] like Figure 2-7 As shown, this utility model discloses a wear-resistant tile for a horizontal centrifuge screw feeder, comprising a laser cladding area 2. The laser cladding area is a welding area of ​​hard alloy 1 on the wear-resistant tile for the horizontal centrifuge screw feeder. A bevel 3 is formed at the connection between the welding area and the tile substrate 4. The welding area is a planar arc-shaped region. Multiple overlapping arc-shaped laser cladding layers are covered on the laser cladding area and the bevel's inclined surface. The starting and ending points of each arc-shaped laser cladding layer are located at the two straight sides of the planar arc-shaped region, and all multiple arc-shaped laser cladding layers are concentric with the planar arc-shaped region. An end-face laser cladding layer is provided on the tile substrate adjacent to the arc edge of the planar arc-shaped region, and a back-face laser cladding layer 12 is provided on the outer arc area of ​​the back side of the tile substrate adjacent to the end-face laser cladding layer.

[0018] Preferably, the angle between the laser cladding area and the bevel slope is 135°, and the bottom depth of the bevel (i.e., the distance between the top surface 14 of the tile substrate that is connected to the top of the bevel and the top surface 15 of the planar arc area) is 1.8 mm.

[0019] The processing method for this structure is:

[0020] Step 1: Use the hard alloy 1 on the wear-resistant tile of the existing horizontal centrifuge screw feeder as the laser cladding area 2, and bevel it 3.

[0021] Step 2: Set the powder feeding convergence point of the laser cladding machine at the outer arc edge of the planar arc area. The powder being conveyed in the laser cladding machine is a uniform mixture of high-hardness particles and tough metal powder. Set the laser cladding trajectory as multiple arc-shaped trajectories moving sequentially inward from the outer arc edge of the planar arc area to the slope surface of the bevel. The starting and ending points of each arc trajectory are located at the sides of two straight lines in the planar arc area, respectively.

[0022] The specific process of laser cladding is as follows:

[0023] The first step is to take the first straight line side of one end of the arc edge of the planar arc area as the starting point 5 of the first cladding layer. The cladding trajectory is a circular arc trajectory with the same radius as the outer arc. It ends at the second straight line side of the other end 6 of the arc edge of the planar arc area, and the first cladding layer 7 ends.

[0024] The second step involves moving a certain distance along the side of the second straight line towards the inner edge of the arc-shaped area, using the end position of the first layer as a reference. The moved position is then taken as the starting point 8 of the second layer of cladding. Using the method of the first step, the second layer of overlapping cladding 9 is started, and the cladding ends at the other end 10 located on the side of the second straight line in the arc-shaped area.

[0025] Third, repeat step two until you reach the upper edge of the slope at the bevel and cover the upper edge 11 of the slope.

[0026] Step 4: Perform a laser cladding process on the outer arc area of ​​the back side of the tile substrate, which is connected to the arc edge of the planar arc area, to form a back laser cladding layer 12.

[0027] Step 5: Apply an end-face laser cladding layer 13 in the area between the first cladding layer and the back laser cladding layer.

[0028] Step 6: Allow the room to cool naturally.

Claims

1. A wear-resistant tile for a horizontal centrifuge screw feeder, characterized in that: The system includes a laser cladding area, which is a hard alloy inlay welding area on a wear-resistant tile for a horizontal centrifuge screw feeder. A bevel is formed at the connection between the inlay welding area and the tile substrate. The inlay welding area is a planar arc-shaped region. Multiple overlapping arc-shaped laser cladding layers are covered on the laser cladding area and the bevel. The starting point and ending point of each arc-shaped laser cladding layer are located at the two straight sides of the planar arc-shaped region, and the multiple arc-shaped laser cladding layers are all set with the same arc center as the planar arc-shaped region. An end face laser cladding layer is provided on the tile substrate that connects to the arc edge of the planar arc-shaped region, and a back face laser cladding layer is provided on the outer arc area of ​​the back side of the tile substrate that connects to the end face laser cladding layer.

2. The wear-resistant tile for the screw feeder of a horizontal centrifuge according to claim 1, characterized in that: The angle between the laser cladding zone and the bevel surface is 135°.

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