| 摘要 |
foundry, possibly composition of coating for casting molds and cores. SUBSTANCE: composition contains (mass%): concentrate of aluminium-boron phosphate (33-37), graphite (28-32), magnesium oxide (4-10), water - the balance. EFFECT: enhanced strength of casting molds due to use of graphite as filler and magnesium oxide, lowered labor consumption for removing worn coating. 1 tbl, 3 ex
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