1. Cast aluminum and aluminum alloy gravity casting, what is the relationship between them?
Cast aluminum and aluminum alloy gravity casting, the relationship between them is for the subordinate or the inclusion relationship, that is, in the cast aluminum, including the aluminum alloy gravity casting. Because cast aluminum, it refers to the aluminum or aluminum alloy material, through the casting method to obtain aluminum or aluminum alloy castings. Gravity casting, which is one of the casting methods, will have this conclusion.
2. In the gravity casting of aluminum alloy, is it only the type of gravity casting?
In the gravity casting of aluminum alloy, the casting method is only one type of gravity casting, and this is undoubted. Therefore, it can produce manufactured castings, mainly for some complex castings, as well as castings with higher strength requirements, but not for thin-walled castings.
3. How to avoid the problem of porosity in the process of gravity casting of aluminum alloy?
In the process of gravity casting of aluminum alloy, how to avoid the problem of stomata? In fact, there are some measures that can be taken. The main ones are:
First, the exhaust plug or the exhaust pin is appropriately added to discharge the gas in time; secondly, in the pouring system, the laminar flow is not flowed from the bottom, so that problems such as gas entrainment can be avoided. Third, before the pouring, the aluminum alloy is subjected to refining and degassing treatment, for example, using a deaerator to pass argon gas to perform the degassing work.