·Overview
As integral components within the crane traveling mechanism, Crane Rail Wheels play a pivotal role in various lifting machines, including single-girder overhead cranes, double-girder overhead cranes, gantry cranes, port cranes, and other rail-mounted material handling equipment. These wheels come in a range of configurations, encompassing single-flange wheels, double-flange wheels, and other specialized nonstandard designs. The materials used in the construction of these wheels include 2CrMo4, ZG340-640, ZG50SiMn, 65Mn, 42Cr, etc., and more. At Purui, we employ diverse techniques tailored to the specific materials, expertly controlling the quenching and tempering temperatures to achieve the desired metallographic structure and optimal mechanical properties.
We employ two distinct heat treatment methods customized to specific requirements:
The 1st method applies hardening and tempering yielding a wheel surface hardness of HB300-380, primarily suitable for standard crane products.
In the 2nd method, surface medium frequency quenching and tempering result in a wheel surface hardness of HB300-380 or HRC50-56, ideal for products requiring low wheel center hardness with high wheel surface hardness, and when complete heat treatment is not feasible.
To minimize the risk of flange wear, breakage, and mechanical overload, while maximizing the longevity of the wheels, crucial factors like design, wheel material, wheel diameter, wheel flange design,wheel tread profile, wheel hardness, bearing type, and heat treatment must be evaluated before finalizing the combination. Purui adopts superior material, and advanced heat treatment processes to achieve higher load capability, wear resistance, ductility, and impact resistance. That's what makes them durable and dependable in the traveling mechanism of lifting, building material, metallurgy, mining, electricity, chemical, and environment protection industries.
