Method for manufacturing thermal shock resistant movable nozzle brick
A sliding nozzle and manufacturing method technology, which is applied to manufacturing tools, casting equipment, casting melt containers, etc., can solve the problems of low thermal shock resistance, end of service life, and steel leakage of sliding nozzle bricks, and achieve thermal shock resistance. Moreover, the effect of improving thermal shock resistance and firm structure
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[0018] Specific implementation method
[0019] The thermal shock-resistant sliding nozzle brick of the present invention undergoes technological processes such as raw material selection, pre-mixing, mixing and rolling, pressing and forming, baking and drying, inspection and storage. The specific instructions are as follows:
[0020] 1. Selection of raw materials: select tabular corundum, corundum powder, Al according to the prescribed physical and chemical indicators 2 O 3 Micropowder, graphite, compound additives and thermosetting resin are raw materials, among which:
[0021] Tabular corundum Al 2 O 3 >99%, corundum powder Al 2 O 3 >99%, specification particle size<5um,
[0022] a-Al 2 O 3 Micropowder: Technical requirements: Al 2 O 3 >99% Specification: particle size<2um,
[0023] Graphite: C>98% Specification: particle size <5um,
[0024] Compound additives: Al>55%, Mg>35%, specifications: particle size <5um,
[0025] Resin bond: technical requirements: powder degree 4000-12000 (room...
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