Add.:
No.51, South Gongye Road, Jinan City, Shandong Province, China

Postal Code: 250101

Tel.: +86-531-83122094

Fax: +86-531-83122009

E-mail: Jn_yongxin@126.com

Contact Person: Yang Yongxin

Steel Wheel Rim Manufacturing Process

Rims are incredibly important to the entire wheel component, which means rim manufacturing plays a crucial role in the production of wheels. Xiaoya’s steel wheel rim manufacturing line is used to manufacture wheel rims for passenger cars, trucks, buses, tractors, farm vehicles, and construction vehicles' wheels. According to user’s requirements, we can design and manufacture the rim production line to make 10 to 54 inch steel wheel rims.

Processes
1. Low Carbon Steel Strip Cut-to-length Customer Supplied
2. Rim band feeding
3. Deburring for both sides
4. Stamping mark
5. Rim band coiling
6. Flattening weld joint
7. AC flash butt welding
8. Trimming welding slag
9. Planishing
10. End cutting
11. Cooling
12. Re-rounding
13. Initial flaring
14. 1st roll forming
15. 2nd roll forming
16. 3rd roll forming
17. 4th roll forming for non-skid pattern
18. Edge flanging
19. Final expanding
20. Valve hole punching
21. Press disc into rim
22. Combined welding for rim and disc
23. Bolting rim and disc
A. Feeding, Rim Bank Coiling (Processes 1-4)

A coiler machine is an essential machine that is used before the rim welding. It provides the forms for coiled hoops from flat rim bands. It can be used in the preparation of wheels for light weight cars, trucks, construction vehicles, farm vehicles and more. After the feeding, deburring, stamping and auto coiling, the rim band will become a coiled hoop.

B. Flattening, Butt Welding (Processes 5 and 6)

It is necessary to use the flattening machine to flatten the joint of the coiled rim bands that are over 4mm thick before proceeding to the flash butt welding process.

C. Trimming, Planishing, End Cutting (Processes 7-9)

The welding slag will be produced on both the inside and outside surface of the weld joint after the welding process. A special machine unit comprised of the trimmer,planisher and end cutting machine can be used to remove the slag and make the surface of the weld joint flat and smooth.

D. Flaring (Processes 10-12)

After the weld joint processing, cooling, and re-rounding processes, a horizontal flaring machine will be used to flare two edges of the rim to make the following roll forming processes easier.

E. Roll Forming (13-16)

The roll forming machine is used for the symmetrical or asymmetrical roll forming of wheel rims for passenger cars, tractors and construction vehicles. This machine is used for the 1st through the 4th roll forming. The 4th roll forming process is optional, and is used to press non-skid patterns onto the rim of tractors and construction vehicles.

F. Edge Flanging, Expanding (Processes 17 and 18)

A horizontal expanding machine is used for the expanding size process after the roll forming of the wheel rims. Precise expanding and sizing using a special tooling allows the formed rims to meet the design requirements for diameter.

G. Gas Tightness Testing, Valve Hole Punching (Process19)

Gas tightness detection tests are conducted to ensure the welding quality and reduce air leakage. The valve hole punching is done after profiling, and is an important step in steel wheel rim manufacturing. With a corresponding mold, it can punch the right valve hole on the effective part of the rim. The valve hole punching press is used for the flat pressing and hole punching on tubeless wheel rims.

H. Press Disc into Rim, Welding (Processes 20-22)
  • Press Fitting Machine
  • Press Disc Into Rim

A steel wheel is made of the wheel rim and the wheel disc. The wheel rim and tire form an airtight unit for bearing the vehicle’s weight and transmitting power. The wheel disc is connected to a hub, and transmits the power from the engine. Usually, the wheel rim and disc of passenger cars and trucks are connected by welding, whereas large wheel rims and discs for farm vehicles are bolted to each other.

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