Mastars

Location: Home » Resources » FAQ
Related news
Why do validation testing important for product development?
Why do validation testing important for product development?
Verification and validation are very important steps in the product development and design process. Both these activitie...
Mastars|How to Manufacture Plastic Products?
Mastars|How to Manufacture Plastic Products?
We know how to use different shapes and forms of plastic products but do you know what are the different types of plasti...
How can CNC machining improve the machining accuracy of prototype?|mastars
How can CNC machining improve the machining accuracy of prototype?|mastars
The quality of prototype parts affects the running quality of CNC machining machinery.Mastars is a prototype company in ...
Popular FAQs About Supply Chain Management|Rapid prototyping services
Popular FAQs About Supply Chain Management|Rapid prototyping services
Supply Chain management is the way of handling the whole production flow of goods and its services, beginning from the r...
Mastars:What is CNC turning?
Mastars:What is CNC turning?
CNC Turning is a manufacturing process using of computer numerical control (CNC) in which workpiece are held in a chuck ...
Mastars: Injection Molding vs 3D Printing How to Choose??
Mastars: Injection Molding vs 3D Printing How to Choose??
When you are going to start a new project, you need to consider which manufacturing technology to be used. In this arti...
Tighter Tolerance Requirements Promote Micro Molding Technology Innovation
Tighter Tolerance Requirements Promote Micro Molding Technology Innovation
|CNC machining company |CNC machining services|Customized 3D Printing Service ?Materials research is still one of the m...
Mastars|Detail Guide for Rapid Prototyping Design
Mastars|Detail Guide for Rapid Prototyping Design
Design prototyping in its broader definition comprises the actions to make, test and analyze a prototype, a model, or a ...
How to make full use of CNC punch die|Prototype manufacturer Mastars
How to make full use of CNC punch die|Prototype manufacturer Mastars
In the sheet metal industry, how to make full use of CNC punch molds correctly, so as to improve the production efficien...

Contact us

  • Building 6 , Blue Sky Industrial Park, Ditang Road, Shajing Town, Shenzhen City,Guangdong, China (518104)
  • marketing@mastars.com

Manufacturing technology of aluminum alloy wheel hub|rapid prototyping services

Release date:01 , Jan , 0001 Source:Mastars Pageviews:-
Mastars(provide rapid cnc services,rapid cnc machining,rapid prototyping services.)Aluminum alloy wheels (and aluminum magnesium alloy wheels) have become the development trend in the future because of their lightweight, beautiful, good shock absorption and heat dissipation.
Mastars(provide rapid cnc servicesrapid cnc machiningrapid prototyping services.)Aluminum alloy wheels (and aluminum magnesium alloy wheels) have become the development trend in the future because of their lightweight, beautiful, good shock absorption and heat dissipation.

1、 Manufacturing method of aluminum alloy wheel hub

There are two main production processes of aluminum alloy hub: Casting and forging.

Compared with cast wheel hub, the metallographic structure of forged wheel hub is broken grain and forged structure, while the latter is dendritic grain and cast structure. Comparatively speaking, the die of forged wheels is much more expensive than casting, and it is also more difficult to open the die. However, the mechanical properties of forged wheels are 30%-50% higher, and the corresponding prices are much higher; From the point of view of production process, it is easier to mass produce by casting process, with low price and greater market demand.

In addition, some manufacturers use spinning method and welding assembly method to form. Spinning method is to cast a part of the wheel hub with corresponding allowance, and then use extrusion method to form, which requires special equipment and production line, which is rarely used in China; Generally, the welding assembly method only casts or forges the spokes, and the rims are rolled with formed coiled materials, and then the spokes and rims are welded into hubs, which can greatly reduce the weight and reduce the production cost. However, the process is complex, and Japan has been quite mature in this technology.



2、 Casting technology of aluminum alloy wheel hub

Casting wheel hub is the main production method used by most aluminum alloy wheel hub manufacturers.

The common casting methods include gravity casting, low pressure casting, squeeze casting and oxygen filled casting.

(1) Gravity casting

Gravity casting relies on the gravity of the molten aluminum itself to fill the mold. This method is relatively simple. The requirements for equipment conditions are not high, but the production stability is poor. The temperature field in the solidification process of molten aluminum is easily affected by external conditions, resulting in casting defects such as shrinkage porosity and shrinkage cavity. The labor intensity of workers is high, and the mechanical properties of products are poor, but the cost is low. Therefore, some enterprises are still using it in the production of small-size wheel hubs.

(2) Low pressure casting

At present, as the main production method of aluminum alloy hub, low-pressure casting is to fill the mold at a lower pressure (generally 20-60kpa). After the filling is completed, the pressure is maintained for a period of time, then the pressure is relieved, and the mold is opened for taking parts. This production method can mass produce high-quality wheel hubs. The solidification process of molten aluminum is carried out under pressure, so the product qualification rate and utilization rate of molten aluminum are high. The automation of low-pressure casting machine is high, the labor intensity of workers is relatively low, the production efficiency is high, and the cost is slightly higher than that of gravity casting.

(3) Squeeze casting

Also known as liquid forging, it is a process integrating the characteristics of casting and forging. It can be divided into multiple forms, such as composite squeeze casting, forward squeeze casting, double squeeze casting, etc. The common features are: in addition to the metal mold, there are also punch and mold ejector rod. Generally, about 7000n pressure should be applied on the punch for casting. The surface of the casting is smooth, the metallographic structure and various mechanical properties are close to those of the forging.

The process method is to use a hydraulic press to press the aluminum melt 5-l0 ℃ higher than the melting point of the alloy into the mold, and apply high pressure (P ≥ 100MPa) to the solidification melt at a speed of about 5mm/s. Through pressurized crystallization, the eutectic and dendrite are fully broken, and the aluminum hub with high density and no pores can be produced. The mechanical properties can be improved by more than l5%, but the technical difficulty and efficiency are low.

Mastars Industries CO., LTD

        www.mastars.com
Email: marketing@mastars.com
Tel: +86 755-88210690
Mobile: +86 181 0029 4997
Add: Building 6,Blue Sky Industrial Park, Ditang Road, Shajing Town, Shenzhen City, Guangdong, China

2021 Mastars Industries Co., Ltd. All rights reserved Privacy statement Terms & conditionsWebSite Mapcnzz