Precautions when casting cast iron plate: grind control sand casting process, sand Measuring performance will directly affect the quality of the casting, therefore, the sand should have good air permeability, wet strength, mobility, plasticity and concessions and so on. Strict accordance with the order of addition: old sand - new sand - clay - pulverized coal - water. Mixed grind scheduled for 6 ~ 7min, after mixing for approximately 5h grind and mix thoroughly. Sieved mix thoroughly, then use play loose, so loose sand has to improve breathability, mobility, etc. Casting controlled pouring process. To cast before pouring water birth and slag processing. In the casting process to continuously flow, smooth, red sand to avoid the formation of blisters. When the fire ran to promptly blocked drain casting parts water and make up the cast of water to reduce cold shut, pouring enough other defects. Control, the cleanup process after casting cleanup process is cooled to clean Gage Gage casting casting from the mold to obtain a defect-free surface measuring tool castings. Reasonable process: the operator must operate in strict accordance with the process, seeking gauges calendar casting structure makes look easy to manufacture, so that the number of faces little parting with draft angle, sand core number is less, there is a reasonable thickness, have a transition junction. Select reasonable gating system, so that gauges casting solidification to obtain homogeneous measuring tool castings. Co-Box: Box is a co-important link can not be ignored, floating sand mold surface to clean up, according to imprint on the joint, the amount of attention the wrong box, is an important means of reducing the casting gage partial box. Under the core: core to the next smooth, clean up floating sand. Location of the sand core is good in case you want to place partial core generation. Drying: Drying process for dry mold shape, operate according to the rules, the drying time is more than 8h, to prevent drying caused impervious sand, porosity and other defects. 

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