Guide Ring is a mechanical seal, also known as a guide ring. It is usually made of metal or plastic and used to support and position pistons or rods. Guide Ring has excellent wear resistance and corrosion resistance, which can effectively reduce leakage and friction, thereby extending equipment life. Guide Ring is widely used in the hydraulic, pneumatic, mechanical, and automotive industries as an important mechanical seal.
The classification of Guide Ring can be divided by material, structure, and purpose. According to material classification, Guide Rings are mainly divided into metal Guide Rings and plastic Guide Rings. Metal Guide Rings are usually made of metals such as copper, iron, and stainless steel, which have high strength, wear resistance, and high-temperature resistance; The plastic Guide Ring is usually made of polytetrafluoroethylene (PTFE), nylon, polyimide and other materials, with good corrosion resistance and low friction coefficient.
According to structural classification, Guide Rings are mainly divided into unidirectional Guide Rings and bidirectional Guide Rings. A unidirectional guide ring can only withstand pressure in one direction and is typically used in hydraulic and pneumatic systems; The bidirectional guide ring can withstand bidirectional pressure and is typically used in the mechanical and automotive industries.
According to usage classification, Guide Rings are mainly divided into piston Guide Rings and rod Guide Rings. The piston guide ring is usually used to support and position the piston, preventing friction and leakage between the piston and the cylinder liner; The rod guide ring is used to support and position the rod, preventing friction and leakage between the rod and the seal.
Wearing,Guide Ring,Guide Strip DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.comNew Anti-Rust Technology in Fine Bearing Processes
Rust is a common problem in metal components, especially in precision parts like bearings. It not only affects the accuracy and surface finish of the product but also reduces its service life. Therefore, anti-rust measures are crucial during the manufacturing process, particularly between different stages of production.
Traditionally, several methods have been used to prevent rust between bearing processes, but they often come with limitations:
1. **Immersion in Anti-Rust Tanks**: Bearings are submerged in a solution containing 5% sodium nitrite and 0.6% sodium carbonate. While this method is effective, it requires multiple tanks and takes up significant space.
2. **Concentrated Sodium Nitrite Solution**: Bearings are dipped into a more concentrated solution (15%-20% sodium nitrite and 0.6% sodium carbonate) before being stacked. However, the rust protection lasts only 7-14 days, and in humid conditions, it may last just 2-3 days, leading to higher labor and cost.
3. **Oil Coating**: Bearings are coated with anti-rust oil. This method, while simple, requires removal before the next processing stage, which can be time-consuming.
To address these issues, manufacturers have developed a more efficient and practical anti-rust method known as the **spray-jet system**. This approach has been widely tested and applied for many years, proving highly effective in preventing rust on semi-finished and finished bearing products.
The new process involves setting up a central storage area with a cement floor and designated walkways. A sodium nitrite solution (5%-10% sodium nitrite plus 0.6% sodium carbonate) is prepared and placed at the end of the walkway. Bearings are stored on both sides of the floor, with a 0.6-meter gap between each pile. The area is equipped with a drainage system to collect and filter the solution after use.
Each day, the bearings are rinsed with the sodium nitrite solution using a pump and spray head. The solution is then returned to the pool through a drainage channel. A fine mesh filter is used to remove dirt and debris, ensuring the solution remains clean and effective.
The solution is tested every two days, and the concentration is adjusted accordingly. From April to September, the solution is fully replaced every two weeks, while from October to March, it is changed once a month.
This method significantly reduces labor costs and improves efficiency. One person can now manage the entire process, rather than having to handle multiple small anti-rust operations. Additionally, the results have been impressive—over 4,000 units of 7002136 and 3620 bearings were treated with this method, and after nearly a year, they remained rust-free and bright.
Chemical consumption has also been reduced dramatically. Previously, the workshop used over 4,000 kilograms of sodium nitrite per month, but now it only uses about 200 kilograms, saving nearly half the cost.
The spray-type anti-rust method has been successfully tested and implemented by several manufacturers. It is particularly suitable for medium to large-sized bearings that require long-term storage and high-volume production.
Related Bearing Knowledge:
- Powder Metallurgy Oil Bearings
- NSK Import Bearings: Anti-Wear Protection and Equipment Selection
- How to Correctly Install Thrust Bearings
- Vibrating Screen Bearings
For more information, visit China Bearing Network: http://www.chinabearing.net
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New anti-rust technology in fine bearing process
Source: Bearing Network | Date: May 3, 2013