The overall wear resistance performance of metal electronic motor hoses is excellent, and the core conclusion is that pure metal hoses (mainly stainless steel) have the strongest wear resistance. Plastic coated/explosion-proof metal hoses have slight differences in outer layer materials and are far superior to plastic and rubber hoses, and can adapt to most industrial wear scenarios.
1、 Differences in wear resistance of different types of metal hoses
Stainless steel hose (without wrapping): with the best wear resistance. The tube body adopts 304/316 stainless steel with spiral winding or corrugated tube structure. The metal material has high hardness (Brinell hardness of about 200-250HB), smooth surface and high strength, and can withstand long-term friction, collision and slight scratching. Even if it comes into direct contact with metal parts, it is not easily damaged, suitable for high-frequency motion and friction prone scenarios such as mechanical arm motors and heavy equipment motors.
Plastic coated metal hose: The wear resistance depends on the outer plastic coating material.
PVC/PE coated version: The hardness of the outer plastic layer is lower than that of the metal, and long-term friction is prone to wear and peeling of the coated layer, exposing the inner metal layer; But it can cope with mild daily wear and tear (such as contact with cables and plastic parts), suitable for fixed wiring of ordinary motors and non high frequency friction scenarios.
Special wear-resistant plastic coating (such as nylon PA coating): The outer layer of nylon has a higher hardness than PVC/PE, and the wear resistance is improved by 30% -50%. It can be adapted to medium strength wear scenarios (such as elevator motor wiring).
Explosion proof metal hose: Strong wear resistance. The shell is made of cast aluminum alloy or stainless steel, and the thickness of the metal shell is greater than that of ordinary metal hoses, with outstanding impact and friction resistance; Even for cast aluminum shells, the surface hardness is increased after oxidation treatment, which can withstand conventional wear in industrial environments and is suitable for complex wear scenarios such as chemical and oil fields.
2、 Key factors affecting wear resistance performance
Material hardness: stainless steel>cast aluminum alloy>nylon>PVC/PE. The higher the material hardness, the stronger the wear resistance.
Structural design: Spiral wound metal hoses are more wear-resistant than corrugated pipes, and the wound structure is subjected to more uniform forces, making it less prone to damage due to local friction.
Surface treatment: After galvanizing, chrome plating or oxidation treatment, the wear resistance and corrosion resistance of the metal surface will be further improved, extending the wear life.
3、 Suggestions for adapting to wear-resistant scenarios
High frequency friction/motion scenarios (such as robotic arm motors, mobile device motors): Prioritize using uncoated stainless steel hoses, or stainless steel inner layer+nylon coated hoses.
Fixed wiring/mild wear scenarios (such as machine room motors and ordinary equipment wiring): PVC/PE coated metal hoses can meet the needs and have lower costs.
Adverse industrial wear and tear scenarios (such as chemical explosion-proof motors and outdoor heavy-duty motors): Choose stainless steel explosion-proof metal hoses to balance wear resistance and safety protection.
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