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Product Name: Tkfm Cold Chamber Pump Bronze Hawk Sculpture Die Casting Certification: CE Casting Surface Quality Level: 2 Tolerance Grade: 6 Pressure Chamber Structure: Vertical Surface Preparation: Polishing Material: Alloy Machining: Pump Application: Machinery Parts Die Casting Method: Soluble Die Casting Die Casting Machine Type: Cold Chamber Die Casting Machine Size: Customerized Transport Package: Wooden Packing Specification: cast iron Origin: China Product Description The valve body is made of a wide variety of materials, suitable for various working conditions. Henan Chemical Machinery Manufacturing Co., Ltd. focuses on large castings. We can also cast large valve body castings, using resin sand production technology.Commonly used materials for valve bodies are:Gray cast iron, suitable for low pressure valves with working temperature between -15 and +200ºC and nominal pressure PN≤1.6MPa. Heat treatment of gray cast iron. In order to achieve different purposes, gray cast iron can undergo different heat treatments after casting. In the valve production, the heat treatment processes that are often used for gray cast iron valve bodies and other parts after casting include: heat aging to eliminate casting stress and high temperature annealing to eliminate free cementite. Thermal aging is a necessary process. High-temperature annealing is only used to replace thermal aging when there is primary cementite in the structure after casting due to improper control of the chemical composition and casting cooling rate during casting.