Non-standard alloy steel large diameter casting Herringbone gear

Overview of Herringbone gear           

Herringbone gears, also known as double helical gears, are named for the shape of their teeth that resemble the letter “man” and play a vital role in mechanical transmission systems. The main advantage of herringbone gear is its ability to effectively eliminate axial forces, which makes it particularly popular in high-load and high-speed mechanical equipment. By reducing vibration and noise, herringbone gears contribute to the smoothness and comfort of the overall mechanical system, making them an important component in modern high-performance mechanical design.

Q	A	Q	A
Product name	Herringbone gear	Delivery time	45-60Days
Material	35CrMo	Defect Control	UT, MT
Process	Casting +CNC machining+HT	Color	Custom
outer diameter	According to the drawings	weight (kg)	1680
Heat Treatment	Quenching & Tempering	Certificate	ISO9001

Production process of Herringbone gear  

Casting

First of all, the mold is designed and manufactured according to the design drawings to ensure that the final product can meet the required dimensional accuracy and shape requirements. For herringbone gears, sand casting or precision casting methods are usually used. After selecting suitable raw materials (such as cast iron, cast steel, etc.), these materials are melted and poured into pre-prepared molds. In order to ensure the quality of pouring, it is necessary to strictly control the melting temperature, pouring speed and cooling rate to avoid porosity, shrinkage and other defects. After the completion of pouring, the casting needs to be fully cooled before it can be released.

Rough Machining

There are often some irregular parts of the casting after stripping, such as flash, burr, etc., which need to be removed by preliminary mechanical processing. The roughing stage is mainly to remove excess material and make the basic shape of the gear close to the design size. This stage usually includes turning, milling and other processes, in order to quickly remove a large amount of metal, and to reserve the space and margin required for subsequent processing of the gear.

Finishing Machining

Finishing is the more accurate processing of the helical gear after rough machining, so that its size and shape fully meet the design requirements. In this stage, high-precision machine tools are used for operation, such as grinding machines, CNC lathes, etc., to precisely adjust key parameters such as tooth shape, pitch and radial runout. In addition, special attention needs to be paid to the selection of tools and cutting parameters used in the machining process to ensure high-quality surface finish and geometric accuracy.

Heat treatment

In order to improve the hardness, wear resistance and strength of the herringbone gear, it is necessary to carry out appropriate heat treatment. Commonly used heat treatment processes include quenching, tempering and so on. By heating to a specific temperature and holding for a period of time after rapid cooling (quenching), and then heating again at a lower temperature (tempering), in order to change the internal structure of the material, optimize its mechanical properties. The correct heat treatment process is essential to extend the service life of the gear.

Surface treatment

The final step is the surface treatment, which is designed to further enhance the gear’s corrosion resistance, aesthetics and wear resistance.

Package of Herringbone gear

Cleaning treatment to remove surface impurities, anti-rust treatment to prevent oxidation, the selection of appropriate packaging materials such as wooden boxes or cartons, and add anti-shock cushion protection, and finally identify product information and handling precautions to ensure transportation safety.

FAQs of Herringbone gear

 1. What are the choices of gear materials produced in your factory?

 We offer a wide selection of materials, including cast iron, cast steel and alloy steel, depending on your application needs. Each material has its own specific mechanical properties, such as wear resistance, strength and toughness. We can recommend the most suitable materials according to your specific requirements.

2. What is the accuracy level of the gear?

 Our gear machining accuracy can reach the ISO standard level 6 or higher. Through advanced CNC equipment and strict quality control process, to ensure that each gear tooth shape, pitch and radial run out and other key parameters are in line with the design requirements, to meet the needs of high-precision transmission.

3.How do you guarantee the quality of gear?

We implement a total quality management system, from raw material procurement to finished products, every link is strictly tested. Advanced equipment such as hardness tester is used for accurate measurement, and strict heat treatment process is implemented to ensure the quality of each gear is stable and reliable.

4. How long is the lead time?

The lead time for standard products is usually 45-60 Days, depending on the number and complexity of the order. For urgent orders, we can also arrange urgent production to shorten the delivery time as much as possible. We will make a detailed production plan according to your needs and communicate the progress in time.

5. Do you provide customized service?

Yes, we offer a full range of customized services to design and manufacture non-standard gears according to your special needs. Whether it is size, material or surface treatment requirements, we are flexible to ensure that we provide you with the most suitable solution. Please provide detailed technical specifications so that we can quote accurately.