Maintenance Details Of Forged Steel Valves

Forged Steel Valve During maintenance, attention should also be paid to the problem of water ingress into the electric head and its transmission mechanism. Especially rainwater that seeps in during the rainy season. One is to rust the transmission mechanism or transmission sleeve, and the other is freezing in winter. This causes excessive torque when the electric valve is operated, damaging the transmission components, causing the motor to be unloaded or the over-torque protection to trip and unable to achieve electric operation. If the transmission components are damaged, manual operation cannot be performed. After the over-torque protection is activated, manual operation cannot be switched on or off. If forced operation is performed, the internal alloy components will be damaged.
Steel and iron are both alloys based on iron and with carbon as the main added element, collectively referred to as iron-carbon alloys.
Cast pig iron is placed in a molten iron furnace to be smelted into molten iron, and the molten iron is cast into castings, which are called cast iron parts.
What is the difference between cast steel and carbon steel? First, steel is classified according to chemical composition
(1) Carbon steel: a. Low carbon steel (C≤0.25%); b. Medium carbon steel (C≤0.25~0.60%); c. High carbon steel (C≥0.60%).
Steel is classified by the method of forming: (1) forged steel; (2) cast steel; (3) hot rolled steel; (4) cold drawn steel.