Weight: 10~35T
Applicable devices: rotary kiln, ball mill
Application: Cement, building material, metallurgy etc.
Customizable or not: Yes
Product Introduction
Girth Gear 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.
Our main material for the Girth Gear is similar to followings:
| Standard Specifications for Cast Steel |
| 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 |
| 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 |
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Advantage
Shanghai Special Metal Co., Ltd adopts unique heat treatment to optimize the gear ring structure, to enhance hardness,wear resistance and impact force.
Shanghai Special Metal Co., Ltd uses high strength steel to cast gear ring and optimize rotary kiln to ensure the stability under long working time and prolongs service time.
Shanghai Special Metal Co., Ltd has a strong ability of producing steel casting and we can do mass production of gear ring in short cycle with large amount.
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
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:
1. Manufacturer test certificates according to DIN EN 10.204 § 3.1 including chemical composition, mechanical properties and non-destructive examination;
2. Dimensional check supported with a "as-built" sketch;
3. Record of the heat treatment chart
China Special Metal Group Limited (CSM), a supplier of metal material & machinery products, devotes to offer high quality of castings, high-precision machining products, welded fabrications and forgings to valued customers from all over the world. Meanwhile, we offer the design engineering and turnkey project as well.
Our group owns four mainly manufacturing bases. Casting bases in Xinxiang and Yiyang; The welding fabrication base in Wuxi; Special alloy base in Xi'an. Our Shanghai base is the commercial and engineering center. We have our own ISO 9001 certificate.
We have 2 sets of 30 Ton alkaline electric arc furnace; 8sets of transferring ladle with capacity of 35ton, 50tons, and 75tons; 2 sets of baked charter; 4 sets of large heat treatment furnace and the supporting facilities including oxygen generation station, air compression plant, natural gas station, CO station and 22 sets of lifting equipment machines. The lifting capacity reaches 200tons. We own 5 sets of large-scale molding equipment. Meanwhile, we also have the GS1000 vacuum direct reading spectrometer made by OBLF and other inspection equipments like carbon sulfide high-speed analyzer, microcomputer three elements of high-speed analyzer, digital ultrasonic flaw detector, multipurpose magnetic powder flaw detector such as chemical equipment, except that we also own leveraged universal strength tester, SAC thumping machine. Simulating the casting process by the CAE software to ensures the new quality level castings. All the castings are process by arc gouging, carbon dioxide gas gouging, shot-blasted in order to get the surface quality.
Our products include Metallurgical equipment, Cement & Mining machinery. The castings singe weight is up to 120MT. The main products are casting ladles, slag pot, ingot moulds, mill housings, chucks, girth gear & wheel for cement and mining machinery, grinding table and grinding roller for mills, case and covers for pumps, body and beams for all kinds of machine.
