Eccentric shaft and manufacturing method thereof

A manufacturing method and eccentric shaft technology, which are applied in the manufacturing process of eccentric shafts, eccentric shafts, and mechanical devices, and can solve the problems affecting the comprehensive mechanical properties of parts, large energy consumption, and large gaps in the performance of parts between the center and the surface. , to achieve the effect of reducing product deformation and cracking, reducing energy consumption and environmental pollution, and reducing the effect of cross-sectional size.

Inactive Publication Date: 2009-12-09
上海市机械制造工艺研究所有限公司
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, quenching and tempering treatment is prone to heat treatment defects such as deformation and cracking in the process of heating and heat preservation and quenching and extreme cold, resulting in high scrap rate, high energy consumption and environmental pollution, which is increasingly

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
  • Eccentric shaft and manufacturing method thereof
  • Eccentric shaft and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The material for the eccentric shaft in the present invention is: 38MnVS6 non-quenched and tempered steel. By controlling the forging and cooling process directly worth the eccentric shaft.

[0023] Rolled rods made of 38MnVS6 non-quenched and tempered steel, with a diameter of φ180mm. Heating to 1150-1200°C.

[0024] Forging after heating and heat preservation (see the schematic diagram of the eccentric shaft figure 2 shown), the forging process adopts one-fire forging, and the two ends of the eccentric shaft are forged with multi-pass low final forging temperature, and the final forging temperature is 800-850°C.

[0025] After forging, the single-piece suspension is air-cooled and cooled by air-cooling.

[0026] The variable process parameters and mechanical performance test results of each embodiment and the performance of the eccentric shaft of the original quenched and tempered process are shown in Tables 1 and 2. The cross-sectional hardness distribution curve...

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 an eccentric shaft and a manufacturing method thereof. The eccentric shaft is made from non-quenched and tempered steel with ferrite-pearlite structure, in particular 38MnVS6 non-quenched and tempered steel. The manufacturing method thereof includes: heating, the heating temperature ranges from 1150 to 1200 DEG C; forging, one-time forging is used in a forging process, both ends of the eccentric shaft are forged at the multi-step low final forging temperature, and the final forging temperature is controlled to range from 800 to 850 DEG C; and cooling, a forged workpiece is suspended to be air-cooled. The non-quenched steel eccentric shaft manufactured by the invention dispenses with the quenching and heating processing working procedure, thereby generating obvious positive effects, namely that the production period is shortened, the phenomena of product deformation and cracking are reduced, the rate of finished products is increased, and energy consumption and environmental pollution are reduced. Compared with the process, the eccentric shaft manufactured by the non-quenched and tempered steel can save 39 percent of electrical energyaccording to the calculation.

Description

technical field [0001] The invention relates to a mechanical device, in particular to an eccentric shaft. [0002] The invention also relates to a manufacturing process of a mechanical device, in particular to a manufacturing process of an eccentric shaft. Background technique [0003] Jaw crusher is an indispensable equipment for material crushing in mines, quarries, road construction, bridge engineering, metallurgy, chemical industry, building materials and other departments. The eccentric shaft is the main shaft of the jaw crusher, which is the main force-bearing part of the crusher. Through the rotation of the eccentric shaft, the crusher drives the movable jaws on both sides to move up and down. When the movable jaw rises, the angle between the toggle plate and the movable jaw becomes larger. , Push the movable jaw plate close to the fixed jaw plate, so as to crush or chop the material to achieve the purpose of crushing. Therefore, the eccentric shaft has high require...

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
IPC IPC(8): F16C3/18C22C38/12C21D8/00C21D9/28
Inventor 王志明谢维立任颂赞叶俭陈德华
Owner 上海市机械制造工艺研究所有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap