The position of the riser on the casting, what principle should be paid attention to? Below, take a look at it with the small edition of Hubei riser manufacturers!
The position of the riser on the casting directly affects the feeding efficiency of the riser and the quality of the casting, so the following principles should be followed to determine the position of the riser:
1, the riser should be placed on the upper part of the casting to be fed or. After solidification next to the hot node, in order to use the gravity of the liquid metal for feeding.
2. When there are hot sections on different heights of the casting that need to be fed, the riser can be placed on different horizontal surfaces, and the cold iron is used to separate the feeding range of each riser. Otherwise, the high riser should not only feed the low casting. Moreover, the low riser should be fed to cause the shrinkage of the high riser to extend into the casting.
3, the riser should try not to hinder the shrinkage of the casting. The riser should not be set in the casting stress concentration, so as not to cause casting cracks.
4. Riser. It is well set on the surface of the casting that needs to be cut to reduce the working time of the finishing casting.
5, strive to use a riser at the same time to feed several hot joints of a casting, or feed the hot joints of several castings.
6, in order to strengthen the sequential solidification of castings, the inner runner should be as close to the riser or enter through the riser as possible.
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