CN216948518U

CN216948518U - Angular bimetal wear-resistant block

Info

Publication number: CN216948518U
Application number: CN202220434375.9U
Authority: CN
Inventors: 邢万里; 毛建成; 邢振国; 白华斌; 刘苗苗; 常连波; 申海斌; 魏儒赞
Original assignee: Handan Huiqiao Composite Material Technology Co ltd
Current assignee: Handan Huiqiao Composite Material Technology Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-07-12
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a horn-shaped bimetal wear-resistant block. The wear-resistant block consists of a weldable base layer and a wear-resistant layer, the interface of bimetal is a combination of a plane interface and an anti-slip interface, the anti-slip interface is an inclined plane through hole or a step through hole, and the welding assembly surface of the base layer is in a uniformly distributed block shape, a strip shape or a net shape. The size of the inclined through hole is gradually reduced from the welding assembly surface to the thickness direction of the plane interface. The step through hole has a large size on the welding assembly surface and a small size on the plane interface. When a strip-shaped or net-shaped anti-slip interface is adopted, the periphery of the base layer is provided with the side plates and the end plates. The anti-slip interface enables the wear-resistant layer and the base layer to be well and mechanically combined, and prevents the wear-resistant layer from falling off in the using process.

Description

Angular bimetal wear-resistant block

Technical Field

The utility model is applied to the field of mechanical equipment, relates to a bimetal wear-resistant block for welding connection, and is suitable for wear-resistant parts of large-scale engineering machinery.

Background

The utility model patent 2018206328085 applied by the applicant discloses a bimetal wear-resistant block, which is in a flat plate shape, and the bimetal interface is a combination of a plane and a conical surface, and the conical surface is used for strengthening and preventing the wear-resistant layer from peeling off. The utility model patent 2021107760176 of the applicant describes two casting methods of two horny bimetallic wear-resistant blocks, one is right angle and the other is acute angle, the interface of the two horny blocks is mainly plane, the conical surface interface is mainly used as ingate, and the function of preventing the wear-resistant layer from peeling off by using the conical surface reinforcement is also achieved.

The right-angle bimetal wear-resistant block shown in the attached drawing 1 is mainly used for right-angle wear-resistant parts of engineering machinery, such as right-angle parts of a loading bucket of a large-scale loader, the acute-angle wear-resistant block shown in the attached drawing 2 is mainly used for acute-angle parts of the engineering machinery, such as tooth tips of the loading bucket of the large-scale loader, the two wear-resistant blocks are welded and fixed with the loading bucket, solid-liquid composite casting is adopted, solid is low-carbon steel with good weldability, and poured is high-chromium cast iron with good wear resistance. The horn-shaped wear-resistant block produced by the casting method disclosed in the patent 2021107760176 has the advantages that the distance between the corner and the conical hole of the ingate is large, the solidification linear shrinkage of the wear-resistant layer is large, the box needs to be opened quickly after pouring, the high-chromium cast iron is put into a furnace and slowly cooled before being brittle, and cracks or waste products caused by the resistance of shrinkage are avoided. In addition, during the machining of the conical hole, a through hole needs to be drilled firstly, and then a special inclined drill is used for reaming.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is as follows: the utility model provides a wear-resisting piece of angle form bimetal for the welded connection at the wear-resisting position of engineering machine tool, bimetal antiskid takes off interface equipartition, prevents structurally that wearing layer from droing, is favorable to alleviating casting stress, avoids producing crackle or waste product.

The technical scheme adopted by the utility model is as follows: the angle-shaped bimetal wear-resistant block can be a right angle, an acute angle or an obtuse angle and consists of a weldable base layer and a wear-resistant layer, the interface of bimetal is a mode of combining a plane interface and an anti-slip interface, the anti-slip interface is an inclined plane through hole or a step through hole, and the anti-slip interface is uniformly distributed in a block shape, a strip shape or a net shape on the welding assembly surface of the base layer. The size of the through hole is gradually reduced from the welding assembly surface to the thickness direction of the plane interface, and the through hole can be a straight line inclined surface or an arc inclined surface. The step through hole has a large size on the welding assembly surface and a small size on the plane interface. When a strip-shaped or net-shaped anti-slip interface is adopted, the periphery of the base layer is provided with a weldable side plate and an end plate.

Further, the anti-slip interface which is shown as a block is a conical hole, or a circular step hole, or the combination of the conical hole and the step hole.

Further, the anti-slip interface which is displayed as a strip is a strip-shaped inclined plane through hole or a strip-shaped step through hole.

Further, the anti-slip interface shown as a mesh is a longitudinal elongated inclined plane through hole and a transverse arc-shaped groove. The circular arc-shaped groove can be replaced by a square groove, or a bevel groove, or a groove with other shapes.

The utility model has the following beneficial effects: the utility model adopts the anti-slip interface, so that the wear-resistant layer and the base layer are well and mechanically combined, and the wear-resistant layer is prevented from falling off in the use process. The anti-slip interface of equipartition can avoid the crackle that casting stress produced, promotes the basic unit and to the cushioning and the supporting role of wearing layer, helps improving the wear-resisting life of the wear-resisting piece of horn shape.

Drawings

FIG. 1 is a schematic view of a right angle bi-metallic wear block;

FIG. 2 is a schematic structural view of an acute angle bimetallic wear block;

FIG. 3 is a schematic view of the structure of the inclined surface interface in example 1;

FIG. 4 is a schematic view of a step interface structure of embodiment 1;

FIG. 5 is a schematic view of the structure of the inclined surface interface in example 2;

FIG. 6 is a schematic cross-sectional view A-A of FIG. 3 or FIG. 5;

FIG. 7 is a schematic view of a step interface structure of example 2;

FIG. 8 is a schematic cross-sectional view B-B of FIG. 4 or FIG. 7;

FIG. 9 is a schematic view of a network interface structure according to example 3;

FIG. 10 is a schematic cross-sectional view C-C of FIG. 9;

FIG. 11 is a schematic view of different structural configurations of a block-shaped anti-slip interface;

wherein: 1-base layer, 2-wear layer, 3-interface, 4-welding assembly surface, 5-working surface, 6-inclined plane through hole, 7-step through hole, 8-side plate, 9-middle plate, 10-end plate and 11-groove.

Detailed Description

The shape of the angular bimetallic wear-resistant block is mainly the right-angle wear-resistant block shown in the attached drawing 1 and the acute-angle wear-resistant block shown in the attached drawing 2, the interface shape of the bimetallic wear-resistant block is introduced, and the obtuse-angle wear-resistant block is not excluded. The base layer 1 is mainly made of low-carbon steel and has good welding performance, and the welding assembly surface 4 is connected with mechanical welding. The material of the wear-resistant layer 2 is mainly high-chromium cast iron or other alloy materials with good wear resistance, the alloy materials can form good fusion with low-carbon steel, and the working surface 5 bears the wear-resistant work. The bimetal interface 3 is a plane interface and an anti-slip interface, the plane interface is used for supporting and buffering the stress of the wear-resistant layer 2 and preventing brittle cracks or fractures of the wear-resistant layer 2, and the anti-slip interface is used for mechanically connecting bimetal and preventing the wear-resistant layer 2 from peeling off.

The angular bimetal wear-resistant block is produced by adopting a solid-liquid composite casting process, a solid low-carbon steel base layer is embedded into a cavity, and then high-temperature high-chromium cast iron metal liquid or other wear-resistant alloy metal liquid is poured, and the solid low-carbon steel base layer and the high-temperature high-chromium cast iron metal liquid or other wear-resistant alloy metal liquid form metallurgical bonding and also rely on an anti-slip interface to generate mechanical bonding at the same time of forming metallurgical bonding.

The utility model is divided into a block interface, a strip interface and a net interface according to the shape and distribution of the anti-slip interface.

Example 1: the block-shaped anti-slip interface bimetal wear-resistant block.

The block anti-slip interface of the bimetal wear-resistant block in the embodiment refers to that the anti-slip interface of the bimetal is in isolated block distribution, as shown in fig. 3 and fig. 4. After the high-chromium cast iron or the wear-resistant alloy molten metal is poured, the wear-resistant layer alloys which are mutually isolated are distributed on the welding assembly surface 4 of the base layer in a round block shape.

Fig. 3 and 4 are schematic structural views of the low-carbon steel substrate 1, and also show a structural view of a bimetal bonding interface. The front side of the drawing is the soldering assembly side 4 of the substrate and the back side is the planar interface of the bimetal. Fig. 3 is a cross-sectional view of fig. 3, in which inclined through-holes 6 are uniformly distributed on the base layer 1, and the diameter of the inclined through-holes 6 is gradually reduced from the welding assembly surface 4 to the thickness direction of the planar interface to form a conical shape. The base layer 1 is mechanically fixed with the wear-resistant layer 2 by conical reducing, so that the wear-resistant layer 2 is prevented from peeling off. FIG. 4 is a cross-sectional schematic view of FIG. 4, in which step through holes 7 are uniformly distributed on the base layer 1, and FIG. 8 is a cross-sectional schematic view of FIG. 4. the diameter of the through hole on the welding assembly surface 4 is large, the diameter of the through hole on the plane interface is small, and the base layer 1 prevents the abrasion-resistant layer 2 from peeling off by using the circular step. The processing of the conical hole in the attached figure 6 needs a drill for drilling a through hole and a special drill for conical hole expansion, and the processing of the step hole in the attached figure 8 does not use the special drill.

In order to reduce the casting stress of the high-chromium cast iron or the wear-resistant alloy, the inclined plane through holes 6 shown in the attached drawing 3 and the step through holes 7 shown in the attached drawing 4 are uniformly distributed on the base layer 1, and the size is preferably small, the number is preferably large, so that the shrinkage size of the high-chromium cast iron wire is reduced, and the casting stress is reduced.

The low carbon steel base layer shown in fig. 3 and 4 can be cast or made of steel plate, and is bent after a through hole is formed in the steel plate, and when the through hole is bent to a right angle, the base layer shown in fig. 1 is formed, and when the through hole is bent to an acute angle, the base layer shown in fig. 2 is formed.

Example 2: the strip-shaped anti-slip interface bimetal wear-resistant block.

The strip-shaped anti-slip interface of the bimetal wear-resistant block in the embodiment means that the strip-shaped anti-slip interfaces of the bimetal wear-resistant block are distributed in a strip shape, as shown in fig. 5 and 7. After the high-chromium cast iron or the wear-resistant alloy molten metal is poured, the wear-resistant layer alloys which are mutually separated in strip distribution can be seen on the welding assembly surface 4 of the base layer.

Fig. 5 and 7 are schematic structural views of the low-carbon steel substrate 1, and also show a structural view of the bimetal bonding interface. The front side of the drawing is the soldering assembly side 4 of the substrate and the back side is the planar interface of the bimetal. Fig. 5 is a schematic cross-sectional view of fig. 5, in which a plurality of strip-shaped inclined through holes 6 are uniformly distributed on a base layer 1, and the width of each inclined through hole 6 is gradually reduced from a welding assembly surface 4 to a planar interface in the thickness direction to form an inclined trapezoid. The base layer 1 is mechanically fixed with the wear-resistant layer 2 by using the size change of the inclined trapezoid, so that the wear-resistant layer 2 is prevented from being peeled off. FIG. 7 is a cross-sectional view of FIG. 7, in which through holes 7 of long-strip-shaped steps are uniformly distributed on the base layer 1, FIG. 8 is a cross-sectional view of FIG. 7, the width of the through hole on the welding assembly surface 4 is large, the width of the through hole on the plane interface is small, and the base layer 1 prevents the abrasion-resistant layer 2 from peeling off by utilizing the long-strip-shaped steps.

In order to reduce the casting stress of high-chromium cast iron or wear-resistant alloy, the long-strip-shaped inclined-plane through holes 6 shown in the attached drawing 5 and the long-strip-shaped step through holes 7 shown in the attached drawing 7 are uniformly distributed on the base layer 1, and the size and the number of the long-strip-shaped inclined-plane through holes are preferably small.

The base layer 1 of the angular bimetallic wear-resistant block is an integral structure consisting of a side plate 8, a middle plate 9 and an end plate 10, and can be formed by welding or directly casting, as shown in figures 5 and 7. Therefore, when the angular bimetal wear-resistant block is welded, the welding seams are all welded with the low-carbon steel base layer, the base layer isolates the welding seams from the high-chromium cast iron or the wear-resistant alloy, and the welding quality is ensured. If the base layer is formed by welding, the base layer is formed by welding after the side plates 8, the middle plate 9 and the end plate 10 are processed, welding in a planar state and then bending. The substrate of fig. 1 is bent at a right angle, and the substrate of fig. 2 is bent at an acute angle.

It should be noted that the intermediate plate 9 is not essential, but the wear resistant layer of the angular bimetallic wear block of this construction is limited by the properties of the high chromium cast iron and the wear resistant alloy. Generally, high hardness brittle wear resistant alloys can only withstand frictional wear and are not suitable for withstanding impact. That is to say, get rid of the bimetal wear-resisting piece of horniness of medium plate 9 and can satisfy the frictional wear operating mode, under the condition of impact operating mode, because do not have the plane of basic unit to support and cushion, easily produce crackle or fracture, its life can reduce on the contrary.

Example 3: the net-shaped anti-slip interface bimetal wear-resistant block.

The reticular anti-slip interface of the bimetal wear-resistant block in the embodiment means that the reticular anti-slip interface of the bimetal is in latticed distribution, and as shown in figure 9, after the high-chromium cast iron or the wear-resistant alloy molten metal is poured, the reticular distribution and the mutually connected wear-resistant layer alloy can be seen on the welding assembly surface 4 of the base layer.

Fig. 9 is a schematic structural diagram of the mild steel base layer 1, and also shows a structural diagram of the bimetal bonding interface. Besides a plurality of longitudinal strip-shaped inclined plane through holes 6 which are uniformly distributed, a plurality of transverse circular arc-shaped grooves 11 are also processed on the base layer, and the cross section of the figure 9 is shown as the figure 10. In order to reduce the casting stress of high-chromium cast iron or wear-resistant alloy, the strip-shaped inclined plane through holes 6 and the transverse circular arc-shaped grooves 11 shown in the attached drawing 9 are uniformly distributed on the base layer 1, and the size is preferably small, and the number is preferably large.

Like the embodiment 2, in order to ensure that all welding seams are welded with the low-carbon steel base layer when the angular bimetal wear-resistant block is welded, the base layer 1 of the angular bimetal wear-resistant block is an integrated structure consisting of a side plate 8, a middle plate 9 and an end plate 10, and can be welded or directly cast. If the welding method is adopted, after the side plate 8, the middle plate 9 and the end plate 10 are processed, the welding is carried out in a plane state, and then the base layer is formed by bending. The substrate of fig. 1 is bent at a right angle, and the substrate of fig. 2 is bent at an acute angle. The middle plate 9 is not essential as in example 2, but the structure is not so different from example 2, and the alloy of the wear-resistant layer is not seen from the welding face 4 of the base layer, and the characteristics and the use state thereof are substantially the same as those of example 2 without the middle plate.

The anti-slip interface of the above embodiment is illustrated by using a through hole with a slope or a through hole with a step as an example, and can also be a through hole with a combination of a slope and a step, as shown in fig. 11. The inclined plane of the inclined plane through hole 6 can be a straight line or an arc line, and the requirement of gradual change of the size is met. The block shape of example 1 is illustrated by a circle without excluding a square, oval or other shape. The mesh in embodiment 3 is illustrated by taking a square mesh as an example, without excluding a diamond shape or other mesh shapes, and the transverse circular arc-shaped grooves may be replaced by square grooves, inclined grooves or grooves with other shapes. The shapes of the round, the inclined plane, the step plane, the square grid, the circular arc groove and the like explained in the embodiment are relatively easy to process, and the processing cost is relatively low.

At present, the angular bimetallic wear-resistant block has been produced and sold in batches.

According to the angular wear-resistant block, the wear-resistant layer and the base layer are well mechanically combined by adopting a plurality of uniformly distributed anti-slip interfaces, so that the wear-resistant layer is prevented from falling off in the use process, the metallurgical fusion of the wear-resistant layer and the base layer is facilitated, the buffering and supporting effects of the base layer on the wear-resistant layer are improved, and the wear-resistant service life of the angular wear-resistant block is prolonged. The anti-slip interfaces are uniformly distributed, so that casting stress can be relieved, and cracks are avoided.

Claims

1. The utility model provides a wear-resisting piece of angle form bimetal, comprises weldability basic unit (1) and wearing layer (2), its characterized in that: the bimetal combination interface is a combination of a plane interface and an anti-slip interface, the anti-slip interface is an inclined plane through hole (6) or a step through hole (7), and the anti-slip interface is uniformly distributed on a welding assembly surface (4) of the base layer and is in a block shape, a strip shape or a net shape; the size of the inclined plane through hole (6) is gradually reduced from the welding assembly surface (4) to the thickness direction of the plane interface; the step through hole (7) is large in size on the welding assembly surface (4) and small in size on a plane interface.

2. The angular bimetallic wear block of claim 1, wherein: the inclined plane of the inclined plane through hole (6) is a straight inclined plane or an arc inclined plane.

3. The angular bimetallic wear block of claim 1, wherein: the anti-slip interface is shown as a conical hole, or a circular step hole, or a combination of the conical hole and the step hole.

4. The angular bimetallic wear block of claim 1, wherein: the strip-shaped anti-slip interface is shown as a strip-shaped inclined plane through hole or a strip-shaped step through hole.

5. The angular bimetallic wear block of claim 1, wherein: the anti-slip interface is shown as a longitudinal long strip-shaped inclined plane through hole and a transverse circular arc-shaped groove.

6. The angular bimetallic wear block of claim 5, wherein: the circular arc-shaped groove is replaced by a square groove or an inclined groove.

7. The angular bimetallic wear block of claim 1, wherein: when an anti-slip interface which is shown as a strip or a net is adopted, the periphery of the base layer (1) is provided with a weldable edge plate (8) and an end plate (10).