Hard alloy counterattack block for crushing equipment

Abstract

The utility model relates to a hard alloy counterattack block for crushing equipment. A plurality of hard alloy plates are embedded in the front surface or the front surface and the side surface of the counterattack block from top to bottom in a penetrating manner. The impact block has the advantages that the hard alloy plate is added into the impact block, so that the impact resistance and the wear resistance of the impact block are improved by several times compared with those of a high-chromium cast iron impact block, the service life is prolonged to 9-10 months from 4-5 months in the background technology, unexpected technical effects are brought, and unexpected economic benefits are obtained.

Description

Technical Field

[0001] The utility model relates to a hard alloy impact block for crushing equipment, which has impact resistance and wear resistance several times that of high manganese steel or high chromium cast iron and good impact crushing effect, and belongs to the field of impact block manufacturing. Background Art

[0002] CN 105728144 A, entitled "Impact Plate Assembly and Crusher," is intended to increase the service life of an impact plate assembly. The impact plate assembly comprises at least two impact plates stacked one above the other, each of which is secured to the crushing chamber of the crusher. With this technical solution, if the impact plate assembly becomes worn during use, the order of the impact plates can be swapped so that the worn areas are located at the upper and lower edges of the impact plate assembly, ensuring that the middle portion of the impact plate assembly remains functional. However, due to the poor wear resistance of the impact plates themselves, the service life is short, typically lasting only four to five months. Summary of the Invention

[0003] Design purpose: To avoid the shortcomings of the background technology, design a carbide impact block for crushing equipment, which has impact resistance and wear resistance several times that of high manganese steel or high chromium cast iron, and has good impact crushing effect.

[0004] Design: The impact blocks currently used in crushing equipment are made of high-chromium cast iron. The hardness of high-chromium cast iron ranges from 50 to 54 HRC in the as-cast state, 38 to 43 HRC after annealing, and 60 to 67 HRC after quenching. Its hardness varies with carbon content. Low carbon content results in good toughness but low hardness, making it suitable for operating conditions with high impact loads. High carbon content also results in slightly higher hardness, making it suitable for operating conditions with low impact loads and exhibiting good wear resistance. However, in actual use, it was found that when the high-chromium cast iron is subjected to the impeller speed of 1400 to 1600 r / min and the linear velocity of 70 to 85 m / s in high-impact crushing equipment, the material driven by the high-chromium cast iron impact blocks rapidly increases in wear rate, significantly shortening their service life. To solve this insurmountable problem, the applicant has spent the past two years continuously improving the ratio of high-chromium cast iron, hoping to overcome this difficulty. However, after countless trial production and actual testing, the wear rate of the impact block still did not achieve a good effect, especially the wear on the front of the impact block was very large. In desperation, the applicant embedded multiple carbide plates on the front of the impact block, and tested the high-impact crushing equipment with an impeller speed of 1400-1600 r / min and a linear speed of 70-85 m / s. It was found that when multiple carbide plates were embedded on the front of the impact block, and the spacing between the carbide plates was less than the diameter of the crushed material, the wear rate was greatly reduced and the service life was extended several times. After correcting the reasons, it was found that cemented carbide has a high hardness of 86-93HRA, equivalent to 69-81HRC; good hot hardness, which can reach 900-1000℃ and maintain 60HRC; good wear resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500℃, and still have a high hardness at 1000℃.

[0005] Technical solution: A hard alloy impact block for crushing equipment, wherein a plurality of hard alloy plates are embedded in the front side or the front side and the side side of the impact block from top to bottom.

[0006] Compared with the background technology, the utility model embeds a hard alloy plate in the impact block, which makes the impact resistance and wear resistance of the impact block several times higher than that of the high chromium cast iron impact block, and the service life is increased from 4 to 5 months in the background technology to 9 to 10 months, bringing unexpected technical effects and achieving unexpected economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the main view of a carbide impact block for high impact crushing equipment.

[0008] Figure 2 yes Figure 1 Schematic top view of . Implementation Method

[0009] Example 1: Refer to the attached Figure 1and 2 . A cemented carbide impact block for a crushing sand making machine, wherein the impact block 1 has a plurality of cemented carbide plates 2 on the front side or on the front side and the side from top to bottom. The impact block 1 has a plurality of through grooves on the front side or on the front side and the side from top to bottom, and the through grooves are embedded with cemented carbide plates 2. The impact block 1 has a plurality of cemented carbide plates 2 on the front side or on the front side and the side from top to bottom, and the spacing between the cemented carbide plates 2 is less than the diameter of the crushed material. The cemented carbide refers to a cemented carbide used for manufacturing turning tools, milling cutters, planers, drill bits, and boring tools, and the hardness of the cemented carbide is 86-93HRA, i.e. 69-81HRC; when the hot hardness is 900-1000°C, it maintains 60HRC.

[0010] Example 2: Based on Example 1, the cemented carbide plate 2 is bonded into the through groove in the impact block 1.

[0011] Example 3: Based on Example 1, the cemented carbide plate 2 is cast in the impact block 1.

[0012] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are merely simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A hard alloy impact block for crushing equipment, characterized by: The impact block (1) has a front side or a front side and a side side thereof penetrated from top to bottom and embedded with a plurality of hard alloy plates (2).

2. The hard alloy impact block for crushing equipment according to claim 1 is characterized in that: The impact block (1) has a plurality of through grooves spaced from top to bottom on the front side or on the front side and the side side, and a hard alloy plate (2) is embedded in the through grooves.

3. The hard alloy impact block for crushing equipment according to claim 2 is characterized in that: The cemented carbide plate (2) is cast in the impact block (1).

4. The hard alloy impact block for crushing equipment according to claim 2 is characterized in that: The hard alloy plate (2) is bonded into the through groove in the impact block (1).

5. The hard alloy impact block for crushing equipment according to claim 1 is characterized in that: The impact block (1) has a plurality of hard alloy plates (2) on the front side or on the front side and on the side from top to bottom, and the spacing between the plates is smaller than the diameter of the material to be crushed.

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