Today we will talk about common casting defects -surface defects.
There are main types of preventive measures for surface defects:
(three) The thickness of the layer is peaceful and peaceful;
(four) the smoothness of the mold should be high,
and reasonably make the slope of the molding and cast the rounded corner.
(five)The damaged casting should be repaired before the box;
Sand, and cover the mouth;
(six) shorten the time of the placing of sand before pouring;
There are main types of preventive measures for surface defects:
(one) Strictly control the performance of sand and core sand,
and improve the fire of sand and core sand;
(two) reduce the gap between sand particles;(three) The thickness of the layer is peaceful and peaceful;
(four) the smoothness of the mold should be high,
and reasonably make the slope of the molding and cast the rounded corner.
(five)The damaged casting should be repaired before the box;
Sand, and cover the mouth;
(six) shorten the time of the placing of sand before pouring;
(seven) Be careful when the box or moves the casting shaping to avoid damage
or the sand particles fall into the sand type cavity;
(eight)Metal liquid flows smoothly, and large plane castings should be poured tilted;
(nine) properly reduce the pouring temperature of the metal.
