Views: 4 Author: Site Editor Publish Time: 2018-11-26 Origin: Site
The characteristic feature of Zinc alloy pillow block bearing
Zinc alloy housings are based on zinc and are alloyed with other elements. Commonly added alloying elements are aluminum, copper, magnesium, cadmium, lead, titanium, and the like. Zinc-based alloys have low melting point, good fluidity, easy fusion welding, brazing and plastic processing, corrosion resistance in air, easy recycling and remelting of waste; but low creep strength, easy to produce natural age-induced size change. Prepared by melt, die cast or pressure processed into a material. According to the manufacturing process, it can be divided into a forged zinc-based alloy and a deformed zinc-based alloy.
Compared with the babbitt alloy, in addition to the cost performance characteristics, it also has toughness, low specific gravity and wide scale.
The key engineering advantages of zinc alloy bearings are lower cost, longer life, a higher load bearings capability and better emergency (dry-running) characteristics. Zinc also offers benefits to foundries in the form of pollution-free handling and significant energy savings in melting and casting operations.
Compared with bronze, it has the following advantages:
1. Compact and light weight: The feature permits high performance and space-saving machine and equipment
2, the affinity for lubricating oil is strong, self-lubricating is good, plus its metallurgical characteristics (low melting point, not easy to metallurgical joint with steel shaft), so the adhesion is good in use.
3. The friction coefficient is low, the wear is small, and the purchase cost of the parts is reduced under the premise of equal use.
4, the thermal conductivity is large, the heat dissipation is fast, the surface temperature rises slowly and is low, and the pairing friction has a cover effect.
5. The material density is low, the product quality is light, and the installation and maintenance are easy and convenient.
6, with a higher damping characteristics, vibration and noise.
7.High sealing efficiency: Bearings are effectively sealed with end caps for added protection of dust and humid.