Wheel hub is the core part of grinding roller assembly The roller cover is fixed on the hub, and the hub is installed on roller shaft, which forms the grinding roller assembly Generally speaking, roller shell and wheel hub is connected together in the tapered structure, which is convenient for easy maintenance and disassembly

1. The Wheel hub of grinding roller produced by Great Wall Steel Casting has good wear-resistance, and are hard to break.

2. We always insist on this principle: before delivery, the professional inspectors carry out many times NDT tests on the stress surface of wheel hub. No product with bad quality can leave factory. 

 

Standard Specifications for Cast Steel ZG270-500
Country	Standard	Grade
United Kingdom	BS3100	A2
USA	AISI/SAE	UNS J04000
Germany	DIN 1681	GS-60
Japan	JIS-G5101	SC480
International	ISO 3755	270-480

 

 

Quality assurance

The fabrication route is governed by the provisions of the implemented Quality System ISO 9001: 2000. The standard documentation ensures the full traceability of every process step:

• Manufacturer test certificates according to DIN EN 10.204 § 3.1 including chemical composition, mechanical properties and non-destructive examination;
• Dimensional check supported with a “as-built“ sketch;
• Record of the heat treatment chart;

 

 

Production Process

1. Wooden pattern Production

2. Molding
3. Pouring
4. First cleaning
5. Heat treatment – grinding (inspection)
6. Rough machining (inspection)-finishing machining (inspection)

7. Packing-delivering

Hubs of Great Wall Steel Casting are applied in the domestic well-known vertical mill manufacturer - Xinxiang Great Wall Machinery Co., Ltd. They also gained the trust and acceptance from building materials enterprises located in Tianjin, Hubei, Dalian, Tangshan, etc. because its high quality and reliable service has brought them profitable economic and social influence. 

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