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Dividing the processing stage of stainless steel piston rod
Jan 08, 2019

Stainless steel piston rods, whether hollow or solid, are usually made of steel. The piston rod has high processing requirements and its surface roughness is required to be Ra 0.4 to 0.8 um. The coaxiality and wear resistance are strictly required. Because the piston rod reciprocates in the guide sleeve, the outer surface of the piston rod should be wear-resistant and have anti-rust properties, so the outer surface of the piston rod sometimes needs to be chrome-plated. The basic feature of the piston rod is the slender shaft machining.


For parts with high processing quality requirements such as stainless steel piston rods, the entire processing route can be divided into the following stages:


The first is the roughing stage, which mainly refers to cutting, forging, fitter, and roughing. The main task is to cut off most of the margin on each surface of the stainless steel piston rod. The key issue is to improve productivity.


Then there is the semi-finishing stage, finishing, grinding, rough grinding, car, grinding, mainly to complete the processing of the secondary surface, and prepare for the finishing of the main surface.


In the finishing stage, it is mainly to ensure that the surface of the stainless steel piston rod meets the requirements of the pattern. The main problem is how to ensure the processing quality.


Then there is the finishing stage. The main purpose of this stage is to improve the surface quality of the stainless steel piston rod, which is generally not used to improve the shape accuracy and positional

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