Large Casting Ring Gear, Gear Ring for Coal Mill

Large Casting Ring Gear, Gear Ring for Coal Mill   1.General Introduction    Ring gear, or gear ring is the main part of rotary kiln and ball mill which has to run for a long time, therefore, there is high quality requirement for gear ring in production.it is also widely applicable to  Cement, building material, metallurgy etc.    2.Weight 10~35t   3.Materials     Our main material for the gear ring is similar to followings:  

Standard Specifications for Cast Steel Gear Ring
Country	Standard	Grade
United Kingdom	BS EN 10083/2-1991	C45
USA	ASTM A 29/A29M-04	1045
Germany	DIN EN 10083-2-2006	C45/CK45
Japan	JIS G5111	SCC5
International	ISO 683/1	C45/C45E4/C45M2

     

Standard Specifications for Cast Steel Gear Ring
Country	Standard	Grade
United Kingdom	BS 970-1	708 M40
USA	ASTM A 29/A29M-04	4140/4142
Germany	DIN EN 10083-1-1996	42CrMo4
Japan	JIS G4053-2003	SCM440
International	ISO 683/1	3

      4.Priority 1.we adopts unique heat treatment to optimize the gear ring structure, to enhance hardness,wear resistance and impact force. 2.use high strength steel to cast gear ring and optimize rotary kiln to ensure the stability under long working time and prolongs service time. 3.we have a strong ability of producing steel casting and we can do mass production of gear ring in short cycle with large amount.     5.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   6.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;       Gear Rings: