How is the non-standard gear ring of large steel castings cast?

In actual production, large steel castings have very strict requirements on the quality of large gears, so the processing technology of large gears is very key. The following introduces the casting and processing technology of large gears.

The big gear is an important part of the transmission device. Due to the continuous staggered engagement with the small gear to drive the operation of the whole equipment, the big gear is also subject to more wear. Therefore, equipment manufacturing has relatively high requirements for the wear resistance, load-bearing, service life, heating, weight and volume of large gears, which requires more advanced casting and processing technology of large gears.

The requirements of Haiyao casting for gear transmission device are small volume, light weight, high rotation efficiency and power, long service life, low noise and less heating. According to the casting process required by customers, select appropriate wood mold for modeling design, adopt simulated pouring before pouring, and cast high-quality ring gear castings with unique advantages in strict accordance with the process flow of wood mold - Modeling - smelting pouring - thermal insulation - pit sand removal - heat treatment - rough addition and fine addition - packaging and delivery:

1. Unique heat treatment technology to improve wear resistance

The impact resistance and wear resistance of the gear ring are greatly improved by adopting the unique heat treatment technology.

2. High strength steel to ensure service life

The gear ring is cast with high-strength steel, and the transmission characteristics of rotary kiln and ball mill are optimized to ensure the stability of the parts under long-term operation and prolong the service life of the parts.

3. More efficient mass production

It has strong production strength of large steel castings and steel castings, and can carry out mass production and manufacturing of large gear rings and other components, with short casting cycle and high output.

So, what is the customized processing technology of non-standard large gear ring?

The processing of large gears can use a variety of technologies from gear grinding to gear hobbing, but gear hobbing is generally more efficient, so it is recommended to use gear hobbing. The machining process of large gear is first of all that the gear blank enters the machining. At this time, it is mainly to prepare the basis for the next step of machining the tooth shape, so that the accuracy of the inner hole and end face of the large gear basically meets the specified technical requirements.

The second step is to process the tooth profile to meet the specified hardness requirements.

Then there is the finish machining of tooth profile, which is mainly to make the positioning accurate and reliable, and the residual distribution is relatively uniform, so as to achieve the purpose of finish machining.

Later, the heat treatment is carried out on the big gear, which optimizes the structure of the big gear, improves the hardness, and greatly enhances the wear resistance and impact resistance of large steel castings.