To make a performance indoor treadmill, which material is better, iron or aluminum alloy?
For example, the cost of cast iron engines is relatively low. Therefore, for engineering vehicles, diesel engines, and other engines that require greater working pressure and torque, cast iron is generally used.
Advantages of aluminum alloy: aluminum alloy has low density, but relatively high strength, is close to or exceeds high-quality steel, has good plasticity, can be processed into various profiles, has excellent electrical conductivity, thermal conductivity, and corrosion resistance, and is widely used in industry. Second only to steel.
Disadvantages of aluminum alloy: in the production process of aluminum alloy, casting defects such as shrinkage cavities, blisters, pores, and slag inclusion are prone to appear.
Advantages of cast iron: The tensile strength, plasticity, and toughness of cast iron are lower than that of carbon steel. But it also has good wear resistance, high vibration damping, low notch sensitivity, and excellent cutting performance. In addition, cast iron has a high carbon content and its composition is close to eutectic composition. Therefore, the melting point of cast iron is low, about 1200°C, and the molten iron has good fluidity. Therefore, it is usually used as castings by casting methods, so it is called cast iron.
Disadvantages of cast iron: The welded joint is prone to cracks.
Comparison of the two materials
Specific gravity: Aluminum alloy is ~2.7 Kg/dm^3, cast iron is ~7.8Kg/dm^3, that is to say, the weight of aluminum alloy is about one-third of cast iron for the same size parts
Anti-corrosion performance: cast iron is easy to rust, and the surface needs to be treated with anti-repair treatments, such as painting, passivation, etc., ordinary aluminum alloys will also rust, which is called oxidation here, but after the surface of aluminum alloy is oxidized, it will rust further (oxidation) Up.
If the requirements are high, the aluminum alloy should be surface treated, called anodizing. There is also a kind of aluminum alloy called anti-rust aluminum, such as 5083 aluminum, which will be oxidized when the alloy is added.
Strength: Cast iron is generally within 200Mpa, special cast iron can be as high as 600MPa, and cast aluminum alloy can be made in the range of 60~450Mpa, but the unit price of high-strength aluminum alloy is higher.
Others: Cast iron has good dimensional stability, low thermal conductivity, good wear resistance, and can absorb certain vibrations. Aluminum alloy is lightweight and has good corrosion resistance, and high thermal conductivity, but it will cost more to achieve the same mechanical properties as cast iron.
In general, each has its own characteristics. If you want to control weight, choose aluminum alloy.
The aluminum alloy treadmill which is a performance indoor treadmill launched by FUJIREJA is known as the country’s first all-aluminum alloy treadmill, and the Home Walking PAD, which was launched immediately after it, is also made of aluminum alloy.
By comparing aluminum alloy and cast iron, look at the advantages of china’s best aluminum alloy home treadmills
1. Weight
The weight of the aluminum performance indoor treadmill will be much lighter, and it is very suitable for the family. When the treadmill is not needed, it can be stored.
2. Accuracy
Cast iron is generally assembled and formed by welding, while the one-piece aluminum alloy does not need to be welded, which greatly improves the accuracy of treadmill production.
3. Appearance
The most troublesome thing about cast iron treadmills is the problem of rust, while aluminum alloy treadmills have good corrosion resistance through surface treatment processes such as anodizing, electrophoretic coating, and powder spraying.
Therefore, the aluminum performance indoor treadmill has a beautiful surface, and also has anti-corrosion, wear resistance, adsorption, and insulation properties for the body.
4. Life
The aluminum alloy treadmill has a longer service life.
In terms of strength, the tensile strength of cast iron HT200 and HT250 is about 200-250Mpa, while the tensile strength of the aluminum alloy is mostly 310-579Mpa. From a numerical point of view, aluminum alloy materials can withstand greater strength.
For example, the European Union EN9587’s test standard for home treadmills is at a speed of 8km/h, with an impact resistance of 70,000 times. And the aluminum indoor treadmill made aluminum alloy has very good test results, reaching a speed of 12km/h, and withstands 720,000 shocks!
Written by: JOYEN
The Exporter and Manufacturer of Fitness Equipment since 2003
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