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Zibo Jinrun Environmental Protection Technology Co., Ltd.

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What are the differences and differences between aluminum impeller and steel impeller

发表时间:2018-05-17 Article Source: Zibo Jinrun Environmental Protection Technology Co. , Ltd.Published time: 2018-05-17

What are the differences and differences between aluminum impeller and steel impeller

Abstract: The similarities and differences between aluminum impellers and steel impellers. The use effect of aluminum impellers and steel impellers is the same. Generally, it depends on the application site to determine which impeller is used.
1. The specific gravity of steel is 7.85, and the specific gravity of aluminum is about 2.7 (usually aluminum alloy is used, pure aluminum is not used for low strength), and the weight difference is nearly 3 times. Because aluminum is lightweight, it can reduce power consumption and save energy.
2. The melting point of steel is about 1500 degrees and aluminum is 660 degrees. At high temperatures, aluminum impellers must never be used.
3. Steel is susceptible to oxidation in the air (before anti-corrosion treatment, such as galvanizing, etc.), and aluminum can form a dense oxide film on the surface after oxidation, so that it can no longer be oxidized. In the case of slightly corrosive atmosphere, aluminum impeller is better than steel impeller.
4. The strength of steel is greater than aluminum. Due to the limitation of strength, the impellers of large fans are generally made of steel.



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