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Coupling manufacturer's heat treatment plan for machining and protection

wallpapers Resource 2020-05-20
As an essential transmission component, the coupling is a necessity for many devices, so people have a high demand for it. As a result, the coupling industry has also developed, but despite this, coupling manufacturers cannot ignore the quality of the coupling and the protective effect of the coupling. It is necessary to manufacture qualified high-quality products in strict accordance with production standards—long-term development. Couplings are generally processed by free forging. Because the free forging method is used for processing, not only the tools required for processing are straightforward, but the processing cost can also be saved.
The method of free forging is more comfortable to operate than other processing methods, and the quality of the finished products is better. Each coupling should have a protective device to close the coupling and shaft to prevent people or objects from entering the dangerous area when the unit is running. Coupling forging materials must have an inspection certificate. If alternative materials are required, they must obtain the consent of the purchaser and have written documents. The forgings should be forged on hydraulic pressure or forging hammers with sufficient tonnage. The forgings should have an enough forging ratio so that the entire section is forged through to obtain a uniform structure. The axis of the forging should correspond to the centerline of the steel metal. Forgings should be formed by forging steel ingots or billets. Double-foot forging is allowed, and it should generally be separated for heat treatment.
Forgings should be preheated after forging to improve the structure and machinability. Forging performance should be roughed before heat treatment, leaving a minimum machining allowance. Forgings should be quenched and tempered to achieve the required performance. The protective device should be easy to disassemble so that it will not affect the connected machine when the coupling is overhauled and maintained. The structure of the protective equipment must have sufficient rigidity. When subjected to a static load of 900 N, its deflection shall not exceed 0.0005 times the unsupported length of the protective device. The protective mechanism of the coupling that needs to be lubricated should be sealed. When the protective equipment is required, anti-dynamic baffles should be installed to reduce gas or oil's influence. Flange-connected cylindrical housing guards are usually used for medium and high-speed gear couplings and diaphragm couplings.
The protective device's structural cylindrical shape is split in the axial direction, and the protective device is connected to the corresponding equipment in the unit by flanges at both ends. An extension joint shall be provided at one end of the protective device, and an O-ring is installed at the extension joint. The protection device of the controller. Each oil injection nozzle should be screwed onto the protective equipment in an appropriate direction so that the oil is sprayed in the course of rotation. If the unit has forward and reverses running, fuel is injected in the axial direction. The grease nipple or oil pipe is not allowed to rub against the coupling. Manual free forging has low production efficiency and high labor intensity and is only used for repairing or the production of simple, small, and small-batch forgings. In modern industrial production, machine free forging has become the primary method of forging production, and it has a particularly important role in the manufacture of heavy machinery.
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