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Pumping station cast iron flap door
Pumping station cast iron flap door

Cast iron gates are generally equipped with adjustable wedge installations, and the wedge pairs are respectively arranged on the door body and the door frame. The conditioning wedge is installed tightly, which can make the door body close to the door frame when the gate is closed, reaching the water stop request. Cast iron gates are usually equipped with manual or electric screw hoists, and cast iron gates are used to operate the gate opening and closing.

Cast iron gates have the characteristics of simple layout, compact structure, saving space; simple operation and maintenance, and reduced operating costs. However, the cost of cast iron gates is slightly higher than that of steel gates.

The editor understands that the detailed table of cast iron inspection specifications for cast iron gates is now the following 6 aspects:

1. Dimension inspection: check whether the casting size can correspond to the requirements of the part drawing, and whether the dimensional accuracy of the machined surface can meet the assembly application;

2. Appearance inspection: the appearance of cast iron gate castings is not allowed to have uncleared sand and debris;

3. Casting defects: the appearance of castings is not allowed to have defects or phenomena such as shrinkage porosity, shrinkage cavity, pores, cracks, skin seams, lack of meat, etc.;

4. Performance report: mechanical properties of cast iron gates (including tensile strength, yield strength, elongation, hardness, pressure index or stop necessary low temperature performance inspection)

5. Chemical inspection: provide a chemical composition report to check whether the chemical composition can be designed according to the target composition;

6. Metallographic report: spheroidization rate, spheroidization grade, etc.

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