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Method for machining hydraulic piston rod for forklift

The technology of a hydraulic piston and a processing method is applied in the processing field of a hydraulic piston rod for a forklift, which can solve the problems such as the influence of the electroplating layer on the sealing, and achieve the effect of ensuring the service life.

Inactive Publication Date: 2016-02-03
ANQING YIHAO IND TRADE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a processing method for hydraulic piston rods for forklifts, which solves the problem that there are micro-grains on the surface of the electroplating layer that affect the sealing of the piston rods produced by the process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, a processing method of a hydraulic piston rod for a forklift, including the steps of blanking, boring and milling, surface treatment, rough grinding, degreasing and degreasing, surface roughening, preheating, grinding, spraying, fine grinding, and mirror polishing , specifically including the following steps;

[0022] (1) Cutting: Use a cutting machine to cut the piston rod according to the size;

[0023] (2) Boring and milling: Use a boring and milling machine to bore and mill the piston rod according to the requirements;

[0024] (3) Surface treatment: cleaning and surface treatment of the bored and milled piston rod parts until the surface has no defects;

[0025] (4) Coarse grinding: The material of the piston rod is 45# steel that has been quenched. After lathe processing, it is placed on a grinding machine, and it is rough ground with a white corundum grinding wheel. After rough grinding, the surface roughness of the piston rod is ≤ Ra3.0 microns; ...

Embodiment 2

[0035] Embodiment 2, a processing method of a hydraulic piston rod for a forklift, including the steps of blanking, boring and milling, surface treatment, rough grinding, degreasing and degreasing, surface roughening, preheating, grinding, spraying, fine grinding, and mirror polishing , specifically including the following steps;

[0036] (1) Cutting: Use a cutting machine to cut the piston rod according to the size;

[0037] (2) Boring and milling: Use a boring and milling machine to bore and mill the piston rod according to the requirements;

[0038] (3) Surface treatment: cleaning and surface treatment of the bored and milled piston rod parts until the surface has no defects;

[0039] (4) Coarse grinding: The material of the piston rod is 45# steel that has been quenched. After lathe processing, it is placed on a grinding machine, and it is rough ground with a white corundum grinding wheel. After rough grinding, the surface roughness of the piston rod is ≤ Ra3.0 microns; ...

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PUM

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Abstract

The invention discloses a method for machining a hydraulic piston rod for a forklift. The method for machining the hydraulic piston rod for the forklift comprises the steps of feeding, boring and milling, surface treatment, rough grinding, deoiling and degreasing, surface roughening, preheating, coping, spraying, finish grinding, and mirror polishing. The method for machining the hydraulic piston rod for the forklift has the beneficial effects that through the original processes including rough grinding, deoiling and degreasing, surface roughening, preheating, coping, spraying, finish grinding and mirror polishing, the hardness of a piston rod piece is improved, the number of tiny lines on the surface is reduced, it is guaranteed that a sealing piece is not prone to damage, and the service life of an oil cylinder is guaranteed.

Description

technical field [0001] The invention relates to a processing method for a hydraulic piston rod for a forklift, in particular to a processing method for a hydraulic piston rod for a forklift. Background technique [0002] At present, the piston rod is an important part of the forklift shock absorber, and the annual output is large. The process is: fine grinding→polishing→cleaning and degreasing→pickling activation→washing→hard chrome plating. The disadvantage of this hard chromium plating method is that the piston rods used in most hydraulic cylinders are generally ground after milling or clamping, directly electroplated after grinding, polished with abrasive belts after electroplating, and then used directly; Due to the relatively large particles of the abrasive belt, it is impossible to remove the electroplating debris between the micro-strands on the surface of the coating. The long-term reciprocating movement of the piston rod in a high-pressure environment will cause scr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
Inventor 陈国华
Owner ANQING YIHAO IND TRADE DEV