Refractory castable material inspection before construction

Construction of refractory casting material before should strictly check the following:
1. Casting material construction is made of steel or hard wood templates are available. The template must be of adequate strength, good rigidity, not out of shape, do not shift, no leakage of slurry. Steel template to mold release agent. Wood template to brush waterproof paint. The repeated use of the template to cleaning, painting can be used.
2. Water, pouring refractory raw material should be strictly according to the manual control, shall not exceed the limit. Under the premise of ensuring the construction performance, the amount of water should be less than.
3. Castable refractory mixing time should not less than 5 minutes. The operation to the use of forced mixer. Mixing should first dry mix, then add 80% dosage of water mixing, and then depending on the extent of wet and dry, gently stir until the remaining water, obtaining suitable work consistency so far. Stirring casting material different should first mixer clean.
4. Pouring refractory material must use the whole barrel bag full of. Stirring casting refractory material generally good must be used within 30 minutes. Drying at high temperature working environment should be appropriate to shorten this time. Already first castable coagulation even caking not poured into the mould, nor of mixing water reuse.
5. If the project inspection unqualified should deal with qualified rear can construction. Expired materials shall not be used. Construction of castable to ensure that no power outages not interrupted construction.
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Article Source: Refractory castable material inspection before construction
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