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What is the difference between hook material DG20 and DG20Mn?
The material DG20 is generally applied in cranes with working levels of A6 and below. DG20Mn is in cranes with working levels of A6 and above. Alloy Mn imparts DG20Mn with higher wear resistance than DG20.
What's the hook pulley block's material?
The commonly used materials for hooks are forged DG20, DG20Mn, and 35CrMo; the pulleys are made from hot-rolled Q235B or Q355B steel plates.
What material is the drum made of?
Our company's drums with a diameter of 800 and below are made of Q355B rolled seamless pipes, which avoids the welding defects of steel plate rolling and has a shorter production cycle. The reels with a diameter of over 800 are made of Q355B steel plates, and the circular butt welds are 100% UT flaw detection.
What are the commonly used materials for wheels and what's the difference?
Commonly used materials are ZG340-640, ZG50SiMn, 65Mn, and 42CrMo forging. Cast wheels generally have internal defects, while forging does not. ZG50SiMn and 42CrMo contain more alloy elements, resulting in better bearing capacity and higher wear resistance.
What material is the brake wheel made of, what is the processing, and what are the advantages compared to casting?
The brake wheel is made of welded steel pipe, and the steel pipe is rolled to avoid defects such as casting holes.
What is the hardness of the coupling teeth and what kind of heat treatment is performed?
The hardness of the coupling teeth is Rockwell 33-43HRC, and the teeth adopt high-frequency quenching treatment.
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Tel： +86-18664956624
Email: ryanf@pr-drive.com
Add: No. 7 Duchang Road, Nanpu Street, Changyuan City, Xinxiang City, Henan Province, China
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