ZL114A plate castings with 10 mm and 25 mm in thickness were produced by low pressure casting.Filling and solidification features of the low pressure casting plates were investigated by measuring temperature field.The results show that plate castings with 25 mm in thickness are subjected to sequential solidification with a large temperature gradient from riser tube to plate end.Pressure can be exerted on the whole feeding process during solidification through riser tube.For plate castings with 10 mm in thickness,whole plate castings tend to mushy solidification due to rapid solidification velocity,and the feeding is mainly conducted at local position.The filling rate of 40 mm/s can meet the requirements of smooth laminar molten flow for both 10 mm and 25 mm thick plate castings.