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Safety First: Everything You Need to Know About Magnesium Machining
As industries increasingly turn to magnesium for its lightweight
and robust properties, understanding the intricacies of safely
machining this metal becomes paramount.
The highly flammable nature of magnesium, coupled with the hazards
of its dust and chips, makes it a challenging material to work
with.
Our iso9001:2015 certified machine shop ensures unrivalled accuracy
in custom design from prototype to production. Our experienced
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and lathe work. Enjoy personalized support and guidance throughout
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Which Industries Are Magnesium Alloy CNC Customized Parts Suitable
For?
Application Range:
Car engine accessory bracket, clutch housing, gearbox housing,
instrument panel frame, steering wheel frame, seat frame, valve
body mobile phone.
CNC Machined Magnesium Applications
Aerospace Components 
Magnesium's lightweight properties make it ideal for aerospace
parts, reducing the overall weight of aircraft. Components include
gearbox casings, seat frames, and other structural parts.
|
Automotive Parts 
In the automotive industry, magnesium is used for parts like
steering wheel columns, housings, and dashboard structures. Its
light weight contributes to fuel efficiency.
|
Medical Equipment 
Magnesium alloys are biocompatible, making them suitable for
medical devices like surgical instruments, orthopedic implants, and
equipment housings.
|
Electronics Casings 
Magnesium is used in electronic devices such as laptops, cameras,
and smartphones for its electromagnetic interference (EMI)
shielding properties and lightweight nature.
|
Military and Defense 
Due to its strength-to-weight ratio, magnesium is used in military
applications like missile and aircraft components, as well as in
equipment housings. | Robotics and Automation 
Magnesium parts are used in robotics for their lightweight and high
strength, ensuring efficient movement and durability. |
Magnesium Machining Benefits
- Magnesium have low density but high strength and good rigidity.
Such performance is very advantageous for the design of the
integral component.
- Magnesium has good toughness and strong shock absorption. It is
very suitable for parts that are subject to impact—wheels;
magnesium alloys have high damping capacity and are ideal materials
for avoiding fatigue caused by vibration and noise.
- Magnesium alloy has low heat capacity, fast solidification speed
and good die casting performance. Due to the low heat capacity of
the magnesium alloy, the production efficiency is 40% to 50% higher
than that of the same aluminum alloy casting, and the casting size
is more stable, the precision is higher, and the surface finish is
better.
- Magnesium alloys have excellent machinability; magnesium are the
materials that are easier to machining in all common metals. High
cutting speed and inexpensive cutting tools for low tool
consumption
Magnesium CNC machining services and selection of available
materials.
| Magnesium Alloy AZ31B - Benefits and Applications |
Magnesium is a very good metal. Its alloy AZ31B is versatile and
can be used in many industries because it can be machined and
welded easily. It contains 3% aluminum and 1% zinc, which makes it
stronger than pure magnesium, dampens vibrations, and protects
against corrosion better. Some places it might be found are
airplane bodies, laptop cases or camera shells.
|
| AZ91D Magnesium Alloy |
Unimprovable Anti-Corrosion Alloy: It contains 9% of aluminium and
1% of zinc, which is the best result for corrosion resistance among
all other alloys. Such alloy possesses good strength and ductility
with high castability that makes it useful in many fields such as
automotive industry, electronics manufacturing or aerospace
engineering.
|
| WE43 Magnesium Alloy |
A strong alloy that is best for aerospace, defence and automotive
industries. It has yttrium and other rare earth materials added
into it. The thing about this metal is its strength along with good
machinability and high performance at high temperatures too. Some
of the uses are in making parts for space vehicles, racing car
engines or even missiles.
|
| AM60B Magnesium Alloy |
It is recognized that Magnesium Alloy AM60B is highly ductile and
has high energy-absorbing properties. It contains 6% aluminum and
small quantities of manganese which enable it to be easily die-cast
with a good combination of strength and ductility. It is mostly
used in the automobile industry where safety is paramount,
especially when making safety critical parts for vehicles.
|
| ZK60A Magnesium Alloy |
The main reason why magnesium alloy ZK60A is preferred by many
people is because it has high strength and can be machined easily.
This composite which includes zinc and zirconium among other
things, also has high tensile strength as well as good corrosion
resistance properties. It is used widely in aerospace parts
manufacturing as well as structural applications where it serves
multipurpose functions for different types of demanding
environments.
|
| Magnesium Alloy QE22: a high-quality material known for its
exceptional properties. |
QE22 Magnesium Alloy: Silver and rare earth metal containing high
performance alloy that is perfect for demanding applications. It
has excellent mechanical properties especially when used under high
temperatures. Typically found in aerospace components as well as
high-performance automotive parts.
|
Type
|
Tolerance
|
Linear dimension
| +/- 0.015 mm
+/- 0.002 inch
|
Hole diameters (not reamed)
| +/- 0.015 mm
+/- 0.002 inch
|
Shaft diameters
| +/- 0.015 mm
+/- 0.002 inch
|
Part size's limit
| 850 * 650 *550 mm
39.0 * 23.5 * 23.5 inch
|
How to safely machine magnesium?
Although it might sound daunting, it is perfectly safe to CNC
machine magnesium if the right precautions are taken.
Avoid tight clearance angles
Although magnesium can be machined at fast speeds without
compromising the quality of the part,
it is best to avoid tight clearance angles, because contact between
the tool and workpiece increases friction and cutting temperature.
Maintain proper tool condition
Sharp cutting tools can reduce the fire hazard of machining
magnesium.
Dull tools can rub and cause friction, which causes sparks and
builds up heat where the sensitive magnesium chips
are being created. Needless to say, sharp tools will also produce
better parts.
Most machinists use a carbide cutting tool with a large relief
angle for machining magnesium.
Avoid water-based coolant
Although coolants reduce machining temperatures, a water-based
coolant can actually increase the risk of a magnesium fire
as it will produce hydrogen gas.Avoid coolant altogether, or use a
light mineral oil in place of standard coolant. Compressed air
or argon gas can also be used to reduce temperatures without the
risk of exacerbating a potential fire.
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FAQs
What is a major safety problem when machining magnesium?
Machining magnesium causes highly flammable chips and dust. This
poses a significant fire and explosion hazard.
Why is machining magnesium considered to have machinability?
Magnesium is a material, for machining purposes. It is because of
its nature, ease of cutting, and good thermal conductivity. It also
tends to produce burrs. This is helpful when crafting light parts
with tight tolerances and complex designs. Working with magnesium
during machining poses a fire risk. This requires safety
precautions.
Why is magnesium challenging to machine?
Despite its machinability, magnesium is hard to machine. This is
due to its flammability and low thermal conductivity. Chips and
dust form during machining. They can complicate operations and
cause fire or explosion hazards. But this only happens if they are
not properly managed.
Magnesium Sample Pictures for your reference:
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