Characteristic
Precision hot forged gears have a history of more than 50 years. Compared with non-forged gears, these gears have more extended fatigue and wear life. In this article, we will discuss the characteristics of these gears. The key to finding the right gear for your application is the type of metal you use for the die insert. Precision hot forged gears are usually made of H13 tool steel or alloy 718.
Precision hot forged gear
Agricultural machinery manufacturers can obtain all kinds of precision hot forged agricultural spiral gears they need
Purpose. Precision hot forged gears are made of various materials, including carbon and alloy steel, stainless steel, titanium, and maraging steel. Some are even made of other heat-resistant alloys. These gears can be customized according to customer specifications. A typical product range includes an outer diameter of 64 to 267 mm and a weight of 0.54 to 11 kg. A new company is introducing precision hot forged agricultural spiral gears in Selma, North Carolina. The Indian manufacturer worm group is acquiring the former Sona BLW precision forging plant. The company plans to restart production in June. The new company's equipment includes four presses, 23 CNC machine tools, four heat treatment furnaces, and internal mold manufacturing.
Agricultural Foundry Technology
The agricultural casting process of spiral gears can be divided into two basic types: coated sand and pressure casting. Coated sand casting is the most common agricultural casting process. The advantage of this method is that it is easy to scale, can handle small and delicate parts, and can manufacture gears with various tooth shapes. This method is especially suitable for mass production. The agricultural casting technology of spiral gears is widely used in various fields. Another process is called stamping. The gears produced by this process are made of low-carbon steel, brass, and some aluminum alloys. It is widely used in watches, small motors, switching appliances, and mechanical toys. This process is a cost-effective method for manufacturing spiral gears but requires accurate measurement and equipment. Gears with different radii can also be manufactured. You can consider the stamping process if you are looking for unique gear.
Characteristics of forged gears
The typical helical gears of agricultural tractors have three essential characteristics. These characteristics are the same for the pigtail Gears, worm gears, and pinions. Agricultural cast helical gears are made of steel bars with an average diameter of about 4020 mm (46 inches). Turn over the rebar and cut it to the exact weight. The steel is then heated to a specific temperature, usually between 925 and 1230 degrees Celsius or 2250 degrees Fahrenheit. Then the gear is forged to its final dimension and checked to ensure that the internal dimension of the gear is within the tolerance range. The material used to produce gears depends on the application. Ordinary alloy steel has high strength and corrosion resistance. On the other hand, carbon steel is cheap and easy to corrode. Agricultural cast helical gears can be made of brass, copper, and aluminum, depending on the strength and inertia required. On the other hand, copper has conductivity and corrosion resistance. This makes it a good choice for low-speed applications.
Forged gears have more extended fatigue and wear life
Forged agricultural cast helical gears have more extended wear and fatigue life due to improved grain flow in each tooth. The shape and profile of the gears follow the grain flow. The fatigue and wear life of forged gears is longer than that of cut gears. Here, the fatigue and wear life of cutting and forging gears are compared. Forged gears are softer than cut gears and have better fatigue and wear resistance.
This study aims to determine the fatigue and wear life of forged agricultural cast helical gears and optimize the design.
The gearbox of an agricultural tractor. It involves the field test of an 86 kW tractor. After 107 hours, the test was interrupted due to operation problems and transmission noise. The disassembly of the transmission shows that the gears of gears a and B are worn and damaged. Due to the low bending stress and contact stress, the gear teeth are broken.
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