Novel hydraulic breaking hammer piston coating

Abstract

The utility model provides a novel piston coating of a hydraulic breaking hammer, and belongs to the field of breaking hammers. The problems that the piston bears huge impact force and friction force in the high-speed reciprocating motion process, scratching, pulling and abrasion are prone to happening, and the piston loses efficacy and is high in replacement cost are solved. The novel piston coating of the hydraulic breaking hammer comprises a base body, a coating structure used for enhancing the hardness and abrasion resistance of the base body is arranged on the wall face of the base body, and the thickness of the coating structure is 1-20 micrometers. The utility model has the advantage of preventing the surface of the piston from being scratched, strained and the like.

Description

Technical Field

[0001] The utility model belongs to the field of breaker hammers, and relates to a piston coating for a hydraulic breaker hammer, in particular to a novel piston coating for a hydraulic breaker hammer. Background Art

[0002] A breaker hammer is usually installed on an excavator, a loader or a power station for use. It has the advantages of large impact force, convenient use, good mobility and high efficiency, and is widely used in destructive work such as mountain opening and quarrying. At present, the existing hydraulic breaker hammers generally include a front cylinder block, a middle cylinder block and a rear cylinder block. A drill rod is arranged in the front cylinder block. The middle cylinder block is connected with the front cylinder block. A piston is arranged in the middle cylinder block. The piston makes a reciprocating motion with a fixed period inside the middle cylinder block. As the core component of the hydraulic breaker hammer, the piston bears huge impact force and frictional force during the high-speed reciprocating motion, and is extremely prone to scratches, strains and wear, resulting in piston failure and high replacement cost. Summary of the Invention

[0003] The purpose of the utility model is to provide a novel piston coating for a hydraulic breaker hammer with high wear resistance and high impact resistance in view of the above problems existing in the prior art.

[0004] A novel piston coating for a hydraulic breaker hammer includes a substrate. It is characterized in that a coating structure for strengthening the hardness and wear resistance of the substrate is arranged on the wall surface of the substrate, and the thickness of the coating structure is 1-20um.

[0005] The coating structure includes a chromium metal coating. The chromium metal coating directly covers the surface of the substrate, and the thickness of the chromium metal coating is 0.5-3um.

[0006] The coating structure includes a chromium metal coating and a chromium nitride nano-coating. The chromium metal coating directly covers the surface of the product. The chromium nitride nano-coating covers the surface of the chromium metal coating, and the thickness of the chromium nitride nano-coating is 1-10um.

[0007] Compared with the prior art, for the novel piston coating of the hydraulic breaker hammer, by forming a coating structure for strengthening the hardness and improving the wear resistance on the wall surface of the substrate, the coating structure completely and evenly covers the substrate, improving the strength and wear resistance of the inner wall surface of the substrate, significantly reducing the risk of failure of the piston caused by friction and wear during use. The multi-layer design and high bonding force of the coating enable it to resist high-speed impact and collision, avoiding the occurrence of phenomena such as scratches and strains on the piston surface. The excellent performance of the coating can significantly improve the service performance and life of the piston, reduce the number of replacements and repairs, and reduce the use cost. Brief Description of the Drawings

[0008] Figure 1 It is a three-dimensional structure schematic diagram of the piston coating of the new type of hydraulic breaker.

[0009] Figure 2 It is a coating structure schematic diagram of the piston coating of the new type of hydraulic breaker.

[0010] Figure 3 It is a coating structure schematic diagram of the piston coating of the new type of hydraulic breaker.

[0011] In the figure, 1 is the substrate; 2 is the coating structure; 3 is the chromium metal coating; 4 is the chromium nitride nano-coating. Specific embodiments

[0012] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0013] As Figure 1 , Figure 2 , Figure 3 shown, the piston coating of the new type of hydraulic breaker includes a substrate 1, and is characterized in that a coating structure 2 for strengthening the hardness and wear resistance of the substrate 1 is provided on the wall surface of the substrate 1, and the thickness of the coating structure 2 is 1-20 um; the coating is evenly distributed, improving the strength and wear resistance of the inner wall of the substrate 1, making the substrate 1 not easily strained, and improving the service life.

[0014] The coating structure 2 includes a chromium metal coating 3, and the chromium metal coating 3 directly covers the surface of the substrate 1, and the thickness of the chromium metal coating 3 is 0.5-3 um;

[0015] The coating structure 2 includes a chromium metal coating 3 and a chromium nitride nano-coating 4. The chromium metal coating 3 directly covers the surface of the product, and the chromium nitride nano-coating 4 covers the surface of the chromium metal coating 3, and the thickness of the chromium nitride nano-coating 4 is 1-10 um.

[0016] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0017] Although terms such as substrate 1, coating structure 2, chromium metal coating 3, chromium nitride nano-coating 4, etc. are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A novel hydraulic breaker piston coating, comprising a substrate (1), characterized in that: A coating structure (2) for enhancing the hardness and wear resistance of the substrate (1) is arranged on the wall surface of the substrate (1), and the thickness of the coating structure (2) is 1-20 μm; The coating structure (2) comprises a chromium metal coating (3), wherein the chromium metal coating (3) directly covers the surface of the substrate (1), and the thickness of the chromium metal coating (3) is 0.5-3 μm; The coating structure (2) comprises a chromium metal coating (3) and a chromium nitride nano coating (4), wherein the chromium metal coating (3) directly covers the surface of the product, and the chromium nitride nano coating (4) covers the surface of the chromium metal coating (3), and the thickness of the chromium nitride nano coating (4) is 1-10 um.

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