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　　Strictly implement the "six no" principle

　　(1) If the temperature of molten iron is not enough, it will not be poured;

　　(2) If the hot metal grade is wrong, it will not be poured;

　　(3) No slag blocking, no pouring;

　　(4) If the sand box is not dry, it shall not be poured;

　　(5) No pouring without external gate;

　　(6) The hot metal is not enough;

　　(7) The casting should be accurate and stable, and it is not allowed to pour molten iron into the sand box from the riser;

　　(8) When the hot metal is poured into the sand mold, the exhaust gas discharged from the steam outlet, riser and box seam shall be ignited at any time to avoid the injury caused by poisonous gas and hot metal splashing;

　　(9) The remaining hot metal shall be poured into the prepared iron mold or sand pit, and shall not be poured on the sand pile and the ground to prevent hot metal explosion from hurting people. Hot metal flowing on the ground due to fire or other reasons shall not be covered with sand before solidification, and shall be removed in time after solidification;

　　(10) All equipment should be checked for safety and reliability before use and cleaned up after use.