Oil-free bronze bushings with graphite inlays for self-lubricating food and medical equipment to prevent oil pollution

Features: Bronze with tin as the main alloying element. The tin content is generally between 3 and 14%, and is mainly used to make elastic components and wear-resistant parts. The tin content of deformed tin bronze does not exceed 8%, and sometimes phosphorus, lead, zinc and other elements are added. Phosphorus is a good deoxidizer and also improves flow and wear resistance. Adding lead to tin bronze can improve machinability and wear resistance, and adding zinc can improve casting properties. This alloy has high mechanical properties, anti-wear properties and corrosion resistance, is easy to cut and process, has good brazing and welding properties, has a small shrinkage coefficient and is non-magnetic. Coatings such as bronze bushings, bushings, and antimagnetic components can be prepared by wire flame spraying and arc spraying.

• QSN4-3: Corrosion-resistant and wear-resistant parts, antimagnetic components and springs, etc.
• QSN4-4-2.5: Parts subject to friction, such as bushings, bearings, discs, etc.
• QSN6.5-0.1: Spring contact piece, wear-resistant and anti-magnetic parts in precision instruments.
• QSN6.5-0.4: Used for papermaking copper mesh, springs, wear-resistant parts, etc.
• QSN7-0.2: Used for workpieces that are subject to friction, such as bearings, worm gears and springs.

• QAI5: Used for corrosion-resistant elastic components.
• QAI9-2: Pipe fittings working in steam below 250℃.
• QAI9-4: Used for bearings, gears, valve seats, ship parts and electrical components.
• QAI7: Used for gears, friction wheels, worm gear transmission mechanisms, etc.
• QAl10-3-1.5: Used for wear-resistant parts working at high temperatures, such as bearings, gears, flywheels, etc.

• QSI1-3: Used for friction parts working below 300℃, such as intake and exhaust valve guide bushes.
• QSI3-1: Used for springs, worm gears, worm wheels and corrosion-resistant parts, etc.