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One manufacture process of precision casting-pouring
time2017/07/07
Tunnel furnaces are employed to roast the sand shells.
After a period of drying ,sand shells are then put into the tunnel furnace and roasted at a high temperature.
Sand shells are put on carts which then are pushed into the furnace for roasting.The total weight of the steel water for the shells on one cart should be equal to that of one furnace of steel water. Only shells with the same steel designation are put on the same cart. The pouring basins are forbidden to face the opening through which coals are added into the furnace .Neither are the basins allowed to face upward.
