Wear-Resistant, Low-Noise Rotary Kiln Large Gear Ring Large
Industrial Accessory
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.
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.
Structure and Function
The large gear of the ball mill is located in the rotating part of
the ball mill. It meshes with the small gear and transmits power to
the ball barrel through the transmission shaft to make it rotate.
The large gear bears large torque and axial force, and its quality
and strength are crucial. If there is a problem with the large
gear, it may cause the ball barrel to not rotate normally, thus
affecting production efficiency and product quality.
Product Display
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 |
Q&A
Q: Why we believe in luoyang zhongtai industries co., ltd:
A: 1. More than 30 years experience.
2.We are the leading professional supplier of mining machinery,
construction machinery, machines casting and forged parts.
3. All products achieved ISO9901:2000 quality management
certificate and CE, ROHS certificates.
Q:Delivery time?
A: Parts lead time 1-2months, machines 2-3months.
Q:Payment terms?
A: Accept payment type: T/T, L/C, Western union,Cash.
30% deposit when signed contract. Full payment paid before shipping
Q: Quality warranty?
A: Guarantee time: one year for main machinery. If something wrong
we will provide the technical advice and find solution immediately.
For those wearing parts we guarantee high quality parts for
long-term supply.
