Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low friction cylinder of shock absorber and manufacturing method thereof

A low-friction, shock absorber technology, used in shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problem of low cost, the friction force cannot hit the shock absorber, and the high cost of seamless steel pipes problems, to achieve the effect of extending the service life, ensuring the shock absorption effect, and reducing the cost

Active Publication Date: 2015-03-25
ZHANGJIAGANG BONDED ZONE YAXIN PRECISION PIPE MAKING
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current cylinders are made of seamless steel pipes, and some are made of welded pipes. The cost of seamless steel pipes is too high, and they are generally only used in high-end cars. The cost of welded pipes is low, but the friction cannot achieve shock absorption. device requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low friction cylinder of shock absorber and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be described in further detail below through specific examples.

[0032] Such as figure 1 As shown, a method for manufacturing a low-friction cylinder of a shock absorber, comprising the following steps:

[0033] A. Raw material pretreatment: cold-roll the formed steel plate, so that the thickness of the steel plate after cold rolling is one third of the thickness of the steel plate before cold rolling; after cold rolling, the thickness of the steel plate is reduced by two thirds After that, the metallographic structure will be tighter and the surface defects will be less, so the friction force of the inner wall of the welded pipe will be reduced.

[0034] B. Slitting: Slitting the pretreated steel plate into strips and winding;

[0035] C. Process the coiled steel plate into welded pipe, which includes the following steps: uncoiling → end shear butt welding → material storage → rough forming of welded pipe → weld seam extrusion → welding → ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a low friction cylinder of a shock absorber and a manufacturing method of the low friction cylinder of the shock absorber. The manufacturing method of the low friction cylinder of the shock absorber comprises the following steps: A. raw material pretreatment; B. longitudinal shearing; C. pipe welding. Pipe welding comprises the following steps: uncoiling, shearing and butt welding of the end of the pipe, material storing, rough molding of the welded pipe, welded seam extruding, welding, deburring inside and outside of the welded seam, cooling, refined molding of the welded pipe, eddy current detection, straightening, sizing and cutting off, and finished welded pipe inspecting, wherein the mixture of rust-preventative oil and water is adopted to cool when welding, and an inside and outside arc cutting tool is adopted to deburr, the width of the welded seam is 2 times the wall thickness of the steel pipe; D. cleaning and drying; E. bright annealing; F. dipping in reactive drawing oil; G. the first cold-drawing; H. dipping in reactive drawing oil again; I. the second cold-drawing; J. straightening; K. cutting off; L. chamfering; M. cleaning, welding an upper end-plate, drilling a hole at the lower portion of the steel pipe, immersion in rust-preventative oil, and packing. With the manufacturing method of the low friction cylinder of the shock absorber, the welded seam pipe used for the cylinder can be manufactured, and the friction of the welded seam pipe can meet requirements of the shock absorber for friction.

Description

technical field [0001] The invention relates to a low-friction cylinder barrel of a shock absorber and a manufacturing method thereof. The cylinder barrel of the shock absorber is a cylinder barrel in contact with a working piston of the shock absorber. Background technique [0002] The shock absorber is widely used in automobile suspension systems, and can play a shock absorbing role in both compression and extension strokes. The working piston of the shock absorber makes repeated movements inside the cylinder, and the friction force on the inner wall of the cylinder The size seriously affects the service life and use effect of the shock absorber. If the friction force is too large, the wear of the working piston will increase, and the resistance of the shock absorber will increase, which will affect the shock absorption effect. Therefore, generally speaking, the friction force of the inner wall of the cylinder needs to be Meet the following requirements: the friction force...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/32F16J10/02B23P15/00
CPCF16F9/3235F16F9/3271
Inventor 严敏剑
Owner ZHANGJIAGANG BONDED ZONE YAXIN PRECISION PIPE MAKING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com