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| Categories | Mill Girth Gear |
|---|---|
| Brand Name: | ZTIC |
| Model Number: | Mill Girth Gear |
| Certification: | ISO\CE |
| Place of Origin: | Henan China |
| MOQ: | 1set |
| Price: | negotiated |
| Packaging Details: | Standard packing or according to customer's requirement |
| Product name: | Large gear ring |
| Material: | Steel |
| Weight: | Max 120 MT single piece |
| Application: | Rotary kiln,ball mill |
| Maximum module: | 45 by hob |
| Port: | Qingdao China |
| Condition: | New |
| Warranty: | 12 months |
| Company Info. |
| Luoyang Zhongtai Industries CO.,LTD |
| Verified Supplier |
| View Contact Details |
| Product List |
Ball Mill Large Ring Gear Wear-Resistant Cast Steel Gear Alloy Steel Support Customization
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 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.
4) Chamfer the edges of the tooth profile and along the tooth
width.
5) The large ring gear is composed of two half ring gears connected
by high-strength bolts to form a single ring gear. The mating
surface must be at the center of the tooth bottom.
Product Introduction
The ball mill gear, also known as the large gear ring, is usually
installed on the end cover of the ball mill. According to its
structure, the ball mill gear can be divided into three types: full
gear ring, half gear ring and quarter gear ring.
Product Parameters
| (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 |
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