An introduction to aluminium alloy casting types and processes

Aluminium alloy is the basis and raw material for the production of aluminium products. Its production directly influences the quality of aluminium products. In addition to casting, there is also forging. Today, however, we will focus on the types and processes of aluminium alloy casting. There are many types of casting, which can be classified in the next step.

Customarily by modelling method, aluminium alloys can be divided into ordinary sand casting, which includes 3 types of casting: wet sand, dry sand and chemically hardened sand. The next second is special casting, and it can be divided into special casting with natural mineral sand and stone as the main modelling material (such as fusion mould casting, clay casting, foundry shell casting, negative pressure casting, solid casting, ceramic casting, etc.) and special casting with metal as the main casting material (such as metal type casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.) two categories.

And the casting process usually includes the following. First is the casting (so that the liquid metal becomes a solid casting container) preparation, casting according to the materials used can be divided into sand, metal, ceramic, clay, graphite type, etc., according to the number of uses can be divided into one-time type, semi-permanent type and permanent type, casting preparation is the main factor affecting the quality of the casting; second is the melting and casting metal, casting metal (casting alloy) mainly cast iron, cast steel and casting The third is the casting treatment and inspection, casting treatment including the removal of the core and casting surface foreign matter, removal of pouring mouth, shovel grinding burr and phi seam and other protrusions as well as heat treatment, shaping, anti-rust treatment and rough machining.

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