Extrusion manufacturing process for hub outer ring

A manufacturing process and outer ring technology, which is applied in the field of extrusion manufacturing process of the outer ring of the wheel hub, can solve the problems of high production cost, low mechanical performance, large machining allowance of metal casting wheels, etc.

Active Publication Date: 2016-01-06
重庆集飞智能装备技术有限公司
View PDF8 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional aluminum alloy wheel production process is metal casting, which has a large degree of freedom in the choice of the shape of the wheel, which is easy to meet the designer's shape requirements, simple processing, low production cost, but prone to shrinkage, shrinkage, etc. Casting defects, lower mechanical properties
[00...

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The extrusion manufacturing process of the wheel hub outer ring of the present invention comprises the following steps:

[0020] The first step is to preheat the mold, preheat the extrusion mold to 300-400°C by means of intermediate frequency heating, and turn off the intermediate frequency heating;

[0021] The second step is to close the mold and pressurize the extrusion mold. Press the aluminum alloy liquid into the extrusion mold with a pressure of 160-170 tons. 730~780℃;

[0022] The third step is to maintain the pressure, turn off the intermediate frequency heating, and continuously generate a pressure of 160-170 tons on the extrusion die, and last for 40-60 seconds;

[0023] The fourth step, the second pressurization, continues to heat the extrusion mold with intermediate frequency, the heating temperature is 500-550 °C; the pressure is 170-180 tons, and the pressurization time is 10-20 seconds;

[0024] The fifth step is to cool down with water, turn off the i...

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

An extrusion manufacturing process for a hub outer ring comprises the following steps of preheating of a die, die closing and pressurizing, pressure maintaining, secondary pressurizing and water cooling. The extrusion die is preheated to prevent molten aluminum from forming a hard shell on the surface of the extrusion die; in extrusion casting, continuous pressure can eliminate the defects of castings. In the pressure casting process, medium-frequency heating is carried out on the extrusion die continuously, solidification and crusting in the extrusion process can be prevented, and an extrusion head can be made to compress a crystallizing layer continuously, so that liquid-phase metal in a shell layer is pressurized to further eliminate casting defects. Secondary pressurizing can mend the surfaces of the solidified castings and overcome the defects of the surfaces of the solidified castings, and the quality of the castings can be greatly improved. Before final demolding, the die is rapidly cooled, the surfaces of the castings can be rapidly cooled and actively contract inwards to be extruded, and separation stress is generated between the surfaces of the castings and the surface of the die, so that the surface quality of the castings cannot be affected in the demolding process.

Description

technical field [0001] The invention relates to a manufacturing process of a wheel hub, in particular to an extrusion manufacturing process of the outer ring of the wheel hub. Background technique [0002] The traditional aluminum alloy wheel production process is metal casting, which has a large degree of freedom in the choice of the shape of the wheel, which is easy to meet the designer's shape requirements, simple processing, low production cost, but prone to shrinkage, shrinkage, etc. Casting defects, lower mechanical properties. [0003] With the development of motorcycles in the direction of high speed and low energy consumption, it is becoming more and more difficult for metal casting wheels to meet the requirements of use. Metal casting wheels have a large machining allowance and high production costs, making it difficult to be widely used and only suitable for some large wheels. Contents of the invention [0004] The purpose of the present invention is to provid...

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): B22D18/02
Inventor 刘文
Owner 重庆集飞智能装备技术有限公司
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