Big gear is an important part of the transmission device, due to constantly interlocking with the pinion gear drive the entire operation of the equipment, the gears are more wear and tear. Therefore, the equipment manufacturing for the wear resistance of gears, load-bearing, life, heat, weight and size have a relatively high demand, which requires large gear casting and processing technology more advanced.

In the actual production, the quality requirements of large gears is very strict, so the gear processing technology is very critical, the following to introduce the big gear casting and processing technology.

Casting process

According to the customer's request, the Great Wall Casting selects the suitable wood mold to carry on the modeling design, before pouring uses the Chinese casting CAE simulation pouring,According to the following process casting：

Wood Molding - Molding - Casting - Insulation - Sand Cleaning - Heat Treatment - Roughing Plus - Packaging Shipping

1.Unique heat treatment technology to improve wear resistance

The particular heat treatment technology is used for the big gear ring manufactured by Xinxiang Great Wall Machinery which makes the improvement in the structure optimization and the hardness of the product. The performance of wear-resistant and anti-impacting are also enhanced greatly.

2.High-strength steel to ensure service life

The high strength steel was used by us in manufacturing the big gear ring. We also take the optimization for the product against the operation characteristics of the rotary kiln to ensure the stability of the component during the long time operation and extend the service life of the component.

3.Mass production is more efficient

Our company has rich production capability in steel castings. For the components such as the girth gear ring, we can provide them in large production quantity with short cast period and large amount.

Processing technology

Large gear machining can be used from the gear teeth hobbing and other technology, but because the hobbing process generally has a higher efficiency, it is recommended to use hobbing.

Big gear machining process is the first tooth into the mechanical processing, this time for the next step is to prepare the basis for tooth shape, so that the internal gear and the end of the hole accuracy of the basic requirements to meet the technical requirements.

The second step is tooth-shaped processing, in order to achieve the required hardness requirements.

Then is the tooth shape of the finishing, mainly to make accurate and reliable positioning, margin is also more uniform distribution, in order to achieve the purpose of finishing.

Finally, heat treatment of large gears, making the gear structure to be optimized, the hardness is improved, the product of wear resistance and impact resistance greatly enhanced.

CHAENG(Great Wall Casting Co.,Ltd)

Custom 1-150 t Steel Castings according to Your Drawing

E-mail: casting@chaeng.co