Main technical data

Material: 4140/SCM440 /42CrMo, ssw-Q1R/65#steel, 65Mn,50SiMn,QT800, ZG35SiMn, SSW-Q1,1045, 1055, 1060, 1070, and ductile iron 400, 500,600,700 etc

Rated Loading Capacity: 1~160 ton

Diameter: Φ250, Φ350, Φ400, Φ500, Φ600, Φ700, Φ800, Φ 1000, Φ 1200 or on request

Technology: Cast or forged

Quenching Depth: No less than 20mm

Heat Treatment: Quenching and tempering

Work environment temperature: -25℃～+40℃, relative humidity ≤85%

Application Scenarios

Flanged crane wheels are mainly used in all kinds of lift machines. such as single girder overhead crane, double girder overhead crane, gantry crane,

and port crane etc.

Zomax crane Wheel apply different crafts of different material, precisely control the quench and temper temperature, so that the wheel can reach the metallographic structure and mechanical property.

Three heat treatment methods 

according to different requirements

• Through hardening & tempering, wheel surface hardness HB300-380, mainly used for standard crane products.

• Surface medium frequency quenching & termpering, wheel surface hardness HB300-380 or HRC50-56, mainly used for products which with low wheel center hardness & high wheel surface surhardness requirements and unsuited whole heat treatment.

• Through hardening & tempering, wheel surface hardness up to HRC50-56, wheel surface hardness decay with depth due to the differences of raw materials, forged alloy steel wheels’ the depth of hardening layer up to 15mm and thus low hardness attenuation, mainly used for port crane, bucket-wheel excavator, bucket-wheel stacker reclaimer and other heavy load products.

Replacement of crane wheels

FLANGED CRANE WHEELS are replaced because of flange wear, flange breakage, and mechanical overloads characterized by pitting and spalling. Each of these in-service factors must be carefully considered before the combination of wheel design, material selection, hardness pattern and heat-treating technology is selected.

Production Process

1.Raw Materials: Select suitable raw materials based on material specification and materials.

2.Steel Inspection: Recheck the chemical composition of raw material before production.

3.Steel Marking and Cutting: Cut steel into appropriate sizes and weights.

4.Heating (Including Tempering): Heat raw materials to the required temperature.

5.Forging: Perform upsetting, elongation, and monitor dimensions and temperature.

6.Forging Inspection: Inspect appearance and dimensions of forged blanks.

7.Post-Forging Insulation and Normalizing: Refine grain, homogenize structure, and relieve internal stress and improves material defects

8.Rough Machining: Machine forgings to approximate specifications, leaving finishing allowance.

9.Heat Treatment: Heat, cool, and perform required heat treatments like normalizing or quenching.

10.Finish Machining: Precisely machine the product to meet drawing specifications.

11.Product Appearance Inspection: Perform UT, MT, hardness, and carburization testing.

12.Mechanical Property Testing: Test yield, tensile strength, impact, and metallography.

13.Surface Treatment and Packaging: Apply rust protection, package, and store for shipment.