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 |
Product Display
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Ball Mill Large Ring Gear Wear-Resistant Cast Steel Gear Alloy Steel Support Customization Images
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