Large Casting Ball Mill Large Gear Ring Wear-Resistant Stainless Steel
Rotary kiln parts Girth Gear offered find extensive application in different industry sectors including in sponge iron plants, steel & cement industry, mining industry, wind mills as well as in other industry sectors. These are made available in module range of 10 Module to 70 Module and in minimum diameters of 100 mm to 15000 mm. Further, these comprise maximum weight of 70 MT single pieces. Here the range of hardened & ground gear boxes/gears comprise Worm gear boxes, Helical / Double helical gears/gearboxes, Helical-Bevel gearboxes, Planetary Gearboxes and others.
Technical requirements
1) The pretreatment before surface quenching is normalizing treatment, and the hardness should be HB210~250; the mechanical performance indicators are strength limit Rb690MPa, yield limit Rs490MPa, elongation D511%, cross-sectional shrinkage W25%, and impact toughness value Ak30J; the gear teeth are induction hardened, and the hardness is HRC50~55; the effective hardened layer depth is 3~5mm.
2) The whole is subjected to ultrasonic flaw detection, and the internal quality should meet the secondary requirements specified in GB7233-87 standard; the gear teeth and transition fillets are subjected to magnetic particle flaw detection, and the quality should meet the secondary requirements specified in GB/T9444-88 standard.
3) The fillet is not cast R5~R10.
4) The ends of the tooth shape and the edges along the tooth width are chamfered.
5) The large gear ring is composed of two half gear rings connected by high-strength bolts to form an integral gear ring, and the joint surface must be at the center of the tooth bottom.
Product Advantages
1.High Strength and Durability
Made of 42CrMo alloy steel or cast steel, after precision gear hobbing and quenching, the tooth surface has high hardness and strong wear resistance;
The improved joint design (cancellation of the back-off groove) avoids stress concentration fracture at the root of the tooth, and the service life can be extended by more than 2 times.
2.Efficient transmission and adaptability
The large modulus and wide tooth surface structure can withstand high torque impact, with a stable transmission ratio, and adapt to the speed change requirements of different working conditions such as cement and mining;
Supports split modular design, easy installation and maintenance, and reduces downtime.
3.Intelligent lubrication and low maintenance cost
Optional directional injection lubrication system to achieve precise quantitative oil supply, reduce friction loss, and support remote monitoring and environmental protection and fuel saving;
Matching annular seal and cooling system to reduce dust intrusion and extend the lubrication cycle.
Product Parameter
| (1) GS42CrMo4 alloy cast steel (Enterprise Proprietary standard) HB 220-240 | (1) Ladle refining of molten steel (argon blowing and R-H vacuum treatment) | ⑴ Mechanical properties and chemical composition of casting blanks (internal control standards) |
| ⑵ Half-length structure, Y-shaped sheet | ⑵Use the exclusive cold mold sand hanging technology to ensure the density of castings and teeth | ⑵ Ultrasonic flaw detection after rough machining |
| (3)helical tooth | ⑶ Normalizing treatment (proprietary technology) ensures the hardness of the tooth surface | ⑶ Ultrasonic flaw detection and magnetic particle flaw detection after semi-finishing and finishing |
| ⑷ Reasonable sealing and alignment structure | ⑷ After rough hobbing, loosen the gear, repair the joint surface, and then fine hobbing | ⑷ Magnetic particle flaw detection and hardness inspection of tooth surface |
| | (5) Specialized self-made hob precision gear hobbing | ⑸ Tooth profile tolerance inspection |
| | | ⑹ No-load test run before delivery to check the meshing accuracy of large and small gears |
Product Display
LUOYANG ZHONGTAI INDUSTRIES's Field Service Engineers are trained specifically in the LUOYANG ZHONGTAI INDUSTRIES brand group products but are capable of undertaking the servicing of other OEM brands.
Our technicians are equipped with the most advanced technological diagnostic equipment available to trouble shoot your equipment to optimise performance and minimise down time.
LUOYANG ZHONGTAI INDUSTRIES also has an extensive capability in supplying all you consumable and electrical/ mechanical spare part needs.
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Large Casting Ball Mill Large Gear Ring Wear-Resistant Stainless Steel Images
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