Technique for repairing surface damage on piston rod of hydraulic ram, and dedicated repairing tools

A technology for surface damage and hydraulic cylinders, which is applied in the field of hydraulic cylinder piston rod surface damage repair technology and its special repair tools, can solve the problems of high implementation cost, long repair cycle, laborious and laborious, etc., and achieve low work intensity and fast maintenance Fast and less impact on construction

Inactive Publication Date: 2006-12-06
崔学斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages of these two methods are: the repair period is long, the piston rod needs to be disassembled, and then reassembled after repair, which is not only labor-intensive, but also costly

Method used

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  • Technique for repairing surface damage on piston rod of hydraulic ram, and dedicated repairing tools
  • Technique for repairing surface damage on piston rod of hydraulic ram, and dedicated repairing tools

Examples

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Effect test

Embodiment Construction

[0020] Repair process of the present invention comprises the following steps:

[0021] A. Surface treatment: Clean the damaged part of the piston rod surface with an organic solvent;

[0022] B. Overlay welding repair: use argon arc welding machine, use welding rod similar to the material of the piston rod to overlay the recessed part, and the amount of overlay welding should be 0.6-1.2mm higher than the normal circumferential surface of the piston rod;

[0023] C. Grinding and arc making: use a special repair machine to grind the surfacing part along the axial and radial surfaces of the piston rod, first use a coarse grinding wheel to grind the surfacing part to 0.1-0.2mm higher than the normal circumferential surface of the piston rod, and then use a fine grinding wheel Grind the surfacing part to be level with the normal circumferential surface of the piston rod;

[0024] D. Surface polishing: Replace the fine grinding wheel of the repair machine with a coarse cloth wheel,...

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PUM

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Abstract

A technology for repairing the surface damage of piston rod for hydraulic cylinder includes such steps as treating the surface at damaged position, build-up welding for filling the damaged recess, grinding and polishing. Its repair tool is composed of the hinged slide frame and grinding frame, an electric grinder with grinding wheel and fixed to the said grinding frame and a clamping arm with roller and arranged on said slide frame.

Description

technical field [0001] The invention relates to the technical field of metal surface grinding, in particular to a process for repairing damage on the surface of a piston rod of a hydraulic cylinder and a special repair tool thereof. Background technique [0002] Hydraulic cylinders are widely used in construction machinery such as excavators, cranes, forklifts, bulldozers, loaders, etc. During construction, the piston rod of the hydraulic cylinder is often hard damaged due to bumps on the surface, such as local depressions and deformations, resulting in damage to the oil seal and hydraulic oil leakage. , affect the normal use of machinery. Because the piston rod is not only made of hard material, but also requires high surface smoothness, it is troublesome to repair. After the piston rod is damaged, the usual method is: (1) replace the piston rod, (2) polish and repair the original coating of the piston rod and then reinstall it. plating. The disadvantages of these two met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K9/04B24B11/00
Inventor 崔学斌
Owner 崔学斌
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