The application of stainless steel powder metallurgy processing for rust proof gears in fishing gear

Gears are widely used, and all machinery that transmits power is designed with gear transmission, including planetary gears and ring gears for variable speed transmission, bevel and bevel gears for directional transmission, continuously variable transmission, and gear transmission with coordination. With so many gear applications, what process is generally used to make the gears, double teeth, bevel gears, helical gears, etc. that we come into contact with and see in our daily lives. Below, we will take fishing gear transmission gears as a representative and focus on the production of fishing gear gears.

Due to environmental limitations, a large part of fishing gear gears come into contact with seawater, so rust resistance is a major indicator. Gears made from steel are relatively inexpensive, and after heat treatment, they have superior strength and hardness. However, no matter what surface treatment process it adopts, it cannot achieve surface rust prevention. Whether it is electroplating, blackening, or Dacromet and other processes, they can only temporarily prevent rust. After long-term contact with seawater, it is easy to become rusty and mottled. Some visible parts can seriously affect their appearance due to rusting, which is a major mistake in high-end series products. Therefore, in the initial design of parts, attention should be paid to the material and processing technology of gears in order to achieve advantages such as reasonable use and cost reduction.

Generally, the gear of fishing gear is not very difficult, so a slight reduction in wear resistance can still meet the requirements for use. Based on this technical indicator, we select gears for machining by combining stainless steel 304 or 316 materials with better rust prevention performance. Firstly, stainless steel materials are not suitable for machining gears using machining methods, such as gear hobbing and slotting, due to their unique toughness and non machinability. CNC machining is also excluded due to its high cost. The cold heading process of stainless steel is not very easy to process, and the parameters of the gear, such as the common normal and tooth tip circle, are prone to deviation, which affects the precision of the gear. Some people say that I can choose hot forging, but one thing to note is that hot forging is suitable for large gear parts and does not require too much precision. Stainless steel gears for fishing gear are components that require precise fitting, requiring low noise and smooth and even transmission. Based on the above requirements, we have chosen the most suitable processing technology for stainless steel gears in fishing gear - powder metallurgy processing. Powder metallurgy stainless steel gear processing not only has a low cost, but also has an astonishing fast shipping speed. A 60T powder metallurgy automatic forming press can produce 8000 stainless steel gears for fishing gear in 8 hours without stopping the machine. And the stainless steel gears produced have high precision, excellent rust prevention performance, low cost, and fast shipment, making them the preferred process for stainless steel gears in fishing gear.