Zinc is the main alloying element allowing precipitation hardening making them the strongest among the alloys. Their high resistance to corrosion and impressive surface finish makes use of cobalt and tungsten carbide drill bits feasible.

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A good lubricant in the aluminum drilling process should help prevent heat buildup resulting from drill bit and workpiece friction. It should also reduce excessive wear and tear of the drill bit that diminishes hole quality and even cause damage.

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There are several aluminium alloys with different constituent elements that define its properties. These alloys are all available for drilling fabrication and are categorized in series as follows:

Contain copper as the main alloying element capable of precipitation hardening to steel level strengths but hampered by corrosion stressing. Using high speed drill bits with black oxide coating helps reduce corrosion while increasing durability.

When drilling aluminium, applying unreasonable pressure causes a built up edge where the aluminium material sticks to the drill bit. This impairs the hole quality resulting in the need for secondary finishing operations that increase fabrication price and time.

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Several drill bits find use in aluminum drilling such as the high speed steel (HSS) drill bits and cobalt drill bits. HSS drill bits can have coating such as black oxide and titanium to reduce corrosion and friction respectively.

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Employ manganese and some variants have small quantities of copper, magnesium or silicon with high strength and corrosion/wear resistance. Both cobalt drill bits and titanium-coated HSS drill bits can comfortable drill holes through this material.

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Knowledge of correct safety measures during aluminum drilling is essential in preventing injury or even loss of life. Some of the safety measures you need to undertake include:

7075 aluminum alloy employs zinc as the main alloying component and possesses incredible toughness, strength and fatigue resistance. Tungsten carbide drill bits have incredible strength and dissipate heat faster making them ideal for 7075 aluminum.

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Conducting the cast aluminium drilling process cautiously is key in meeting the desired design features. The following steps can guide you in carrying out a successful drilling process:

Utilize silicon as primary alloying element and offer moderate strength, reliable resistance to impact and high ductility. HSS drill bits with black oxide coating can work well with this material.

Tap and Drill Size Chart ; 1/2-13 .4219, 27/64 ; 9/16-12 .4844, 31/64 ; 5/8-11 .5312, 17/32 ; 3/4-10 .6562, 21/32.

When drilling aluminum you can employ liquid lubricants such as water-based synthetic and semi synthetic coolants like soluble oil. You can also employ petroleum-based mineral fluids such as WD-40, isopropyl alcohol and kerosene.

The feed and speed rates of the aluminum drilling process determine the quality of the drilled hole. Revolutions made by the drill bit per minute (RPM) define the feed rate whereas the surface feet per minute (SFM) defines speed.

With magnesium and manganese as the prime constituent elements, this series offers incredible resistance to corrosion and strength without heat treatment. You can employ cobalt drill bits and coated HSS drill bits during drilling process.

Has over 99% aluminium content making it essentially pure aluminium with excellent corrosion resistance and high thermal and electrical conductivity. A non-coated high speed steel (HSS) drill bit and carbide drill can work well due to its soft state.

The primary alloying elements are magnesium and silicon making them easily machinable and weldable. Consequently, you can employ low strength drill bits such as HSS and carbide drill bits when fabricating.

The aluminium drilling process is an essential design feature in the creation of holes for fitting components and joining purposes. The efficiency of the aluminum drilling process depends on several factors such as tool geometry, process conditions, material and cutting parameters.

When drilling aluminium and its alloys, the recommended speed is between 200 – 300 SFM. However, the deeper the holes, the slower the feed and speed rates.