Common Problems In Aluminum Alloy Machining

There are some common problems to watch out for during CNC aluminum machining, and they include:

Surface Mouldy and Unmachined

Cutting fluid causes the majority of problems while CNC aluminum milling alloy. Due to the lack of cutting fluid product design, it is impossible to avoid issues during the machining process. Mildew is one of the expressions of non-machining of aluminum alloy. Aluminum alloy mildewing is typically caused by cutting fluids with insufficient aluminum corrosion inhibition and microbial control.

The mildewing phenomena induced by the two causes vary; however, in most situations, the mildewing is caused by insufficient aluminum corrosion inhibition ability to cut fluid. When mildew appears, it should begin by improving the corrosion prevention ability of the cutting fluid and the storage mode after machining.

Sticking knife, Rotten Teeth, and unqualified Machined Surface finish During Tapping

Because aluminum alloy has soft characteristics and a low melting point, it is possible to have issues like rotten teeth or a stuck knife in a poor processing environment. Cutting fluid with good lubrication and cooling performance should be utilized in addition to altering processing parameters, such as avoiding medium-speed, easy-to-stick knife processing.

Residue on the Machined Surface Affects the Later Cleaning

After machining, aluminum alloys typically require cleaning. If the cleaning ability of the aluminum alloy cutting fluid is poor, residue will form on the aluminum alloy machined surface, impairing the look or later code spraying treatment. It is frequently associated with the construction of an emulsification system and the cleaning of cutting fluid products.

Excess Foam

During machining, cutting fluid foam is typically avoided. Poor machining outcomes and low efficiency will result from inadequate cooling induced by foam and severe tool wear. The 5 axis machining center, in particular, has higher requirements for cutting fluid foam, and cutting fluid that lacks anti-foaming and defoaming  ability will cause abnormal elevation of liquid level, triggering the liquid level alarm and causing the machine tool to stop working usually. The performance of cutting fluid foam can be improved by adding a defoamer and designing the system for cutting fluid products.

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