Installation and adjustment method and weight calculation of cast iron platform

Installation and adjustment method and weight calculation of cast iron platform:

When using a cast iron platform, the first step is to level it. So, how to adjust the cast iron platform? Place the cast iron platform on a bracket, adjust its support point position, and try to be as close to the center symmetry as possible. Use a level measuring instrument (such as a spirit level or electronic level) to check the horizontal condition of the cast iron flat plate and fine tune the relevant support points until they meet the horizontal position. Place the cast iron flat plate flat on the ground, adjust the stability of the four corners by hand, and fine tune the movable foot until it is stable. Adjust each foot initially to ensure even force distribution at each pivot point. After the initial adjustment of the cast iron flat plate is qualified, it should be left to stand for 12 hours before retesting. If it is unqualified, it needs to be adjusted again. If it is qualified, it can be used.

The cooling of old sand cast on a cast iron platform mainly relies on the contact of airflow to remove heat. Therefore, the cooling effect depends on whether the hot sand can have good contact with the airflow for convective heat exchange. To achieve this, sufficient cold air needs to be blown in. Generally speaking, to lower 1 ton of hot sand from 100 to 110 degrees Celsius to near room temperature, it is necessary to blow in 200 to 210 cubic meters of cold air and exhaust 220 to 250 cubic meters of hot air.

With sufficient air volume, it is also necessary for this air to penetrate deep into the sand particles, increasing the contact surface between the sand particles and the air. For this reason, the cast iron flat plate old sand churns inside the cooler, and even effective coolers can keep the old sand in a loose state.

The evaporation of water can take away the heat from the old sand on the cast iron platform. According to theoretical calculations, evaporating 1% of water can reduce sand temperature by about 25 degrees. So, for relatively dry recycled sand, add water appropriately and blow dry the loose sand to evaporate the water, which can improve the cooling effect, but the added water should be as uniform as possible.

The weight calculation method for cast iron platforms: First, calculate the volume of the casting according to the drawing.

The blank of cast iron plate is made according to the technical requirements, and then the wood type or foam type, batching, molding, drying, casting, sand falling are made according to the drawings. After the large inspection of cast iron platform, the various parts of the blank are cleaned and inspected; Large scale inspection platform mechanical processing, appearance inspection and marking, processing, and inspection; Leveling of flat workpieces, manual scraping and grinding, and inspection by the inspection department; Appearance treatment, painting, packaging, and warehousing of a large cast iron inspection platform.