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1. Raw materials：
According to client requirements for crane wheel, proper raw material will be prepared.
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2. Steel testing：
Before production, chemical composition & chemical composition of raw materials is carried out.
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3. Steel marking and blanking：
Raw material is cut into certain sizes and weights accordingly.
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4. Heating (including tempering):
Raw materials is heated with temperature necessary.
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5. Forging：
With complete forging equipment, material temperature and forging process is monitored in real time.
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6. Forging inspection：
Preliminary inspection for forging blanks–mainly appearance and size inspection. Defects like cracks are not allowed. Margin of blanks is qualified.
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7. Heat preservation and normalizing after forging：
Refining crystal grains, uniform organization, and eliminate internal stress. Improve defects: widmanstatten, coarse grains and other overheating defects and banded structure. Prepare for the final heat treatment.
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8. Rough machining：
Rough machining with finishing allowance.
9. Final Heat treatment：
Normalizing, quenching and tempering, quenching–Comprehensive process to improve internal structure and mechanical properties.
Heating forging to a certain temperature, holding for certain time, cooling down at predetermined speed.
This process can eliminate internal stress, prevent deformation during machining, and adjust hardness to facilitate cutting.
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10. Finishing machining：
By CNC machining center, dimensional accuracy and smoothness of the products are fully achieved according to production drawing.
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11. Product appearance inspection：
Carry out Ultrasonic flaw detection (UT), Magnetic particle flaw detection (MT), Hardness inspection, and Carburization inspection.
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12. Mechanical performance test：
Mechanical properties of forgings–yield, tensile, impact, and metal equivalence tests.
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13. Surface treatment and packaging：
After quality inspection, anti-rust spray paint will be applied before packing and shipment.
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14. Loading and delivery：
With proper package for shipping, finished products are ready for shipping in warehouse.
