Zinc-based wear-resistant alloy ZA27 0.68g/cm? Foam ZA27 is poured out of the salt preform.

Converted to standard unit: 0.68× 10? kg/m？

Comparison of similar models:

ZA27 is synonymous with high aluminum zinc-based alloy, containing about 27% aluminum, and is generally cast by gravity.

Compared with Babbitt:

In addition to the obvious cost-effective advantage, it also has the characteristics of higher strength and toughness, lower specific gravity and wider application scope.

Compared with bronze:

1. The strength, hardness and allowable pressure are equivalent to those of aluminum bronze, far exceeding those of bronze such as tin and lead, and the allowable speed is similar. It can completely meet the requirements of the use conditions of independent antifriction and wear-resistant parts such as bearing shells.

2. It has strong affinity for lubricating oil, better self-lubricity, and its metallurgical characteristics (low melting point, not easy to combine with steel shaft metallurgy), so it has strong anti-adhesion and more prominent anti-friction and wear-resistance characteristics in use.

3. Low friction coefficient, less wear and longer service life. Under the same use conditions, it is generally more than 1 times that of copper tile, thus reducing the procurement cost of accessories.

4. High thermal conductivity (ZZnal 27cu2mgλ =125; ZCuAl 10Fe3 λ=59), which has fast heat dissipation and slow and low temperature rise on the grinding surface, and has a good protection effect on pairing friction.

5. The material density is low (ZZnAl27Cu2Mg ρ=5g/cm3), the product quality is light (the weight of the same model and specification is 1/3), and the installation and maintenance are simpler and more convenient.

6. It has high damping characteristics, vibration reduction and noise resistance.