Custom Precision Stainless Steel CNC Milling Magnesium Block
Machining Parts Accessories
Magnesium CNC Machining Services
Magnesium, a unique metal material in the CNC machine tool
workshop, poses high processing risks due to its flammability.
Experience
in magnesium machining is crucial for engineers.
The high thermal conductivity and the mechanical properties of
magnesium make it one of the easiest materials for metal CNC
machines. It is also a lightweight metal, about 35% lighter than
aluminum, making it ideal for use in the automotive and aerospace
industries.
However, there are risks to CNC milling magnesium, which include
fire hazards as this material can burn underwater, nitrogen, and
even CO2.
Pros and Cons of Magnesium CNC Parts
Magnesium Alloy
| Pros | Cons |
| AZ31B | Lightweight with high strength; Good weldability and machinability;
Moderate corrosion resistance | Higher risk of ignition; Lower wear resistance; Limited
high-temperature performance
|
| AZ91D | High strength and excellent casting properties; Good corrosion
resistance; Suitable for complex shapes | Lower ductility compared to non-casting alloys; Flammability
concerns during machining
|
| AM60B | High impact toughness; Good casting properties; Moderate strength
and hardness | Lower creep resistance; Reduced performance at high temperatures
|
| WE43 | High strength, especially at elevated temperatures; Good corrosion
resistance and weldability; Suitable for high-temperature
applications
| Higher processing costs; More difficult to machine |
| ZE41 | Excellent casting and mechanical properties; Good shock and
corrosion resistance; Suitable for complex castings | More susceptible to performance decline at high temperatures;
Relatively lower strength and hardness
|
The surface treatment of CNC magnesium alloy parts varies greatly
depending on the application and function.
- Anodizing: Enhances corrosion resistance and durability through a
protective oxide layer on magnesium parts.
- Chromate Conversion Coating (Alodine): Improves corrosion
resistance and surface adhesion, preparing the parts for painting.
- Electroless Nickel Plating: Adds a uniform, wear-resistant layer to
magnesium components, increasing their durability.
- Powder Coating: Applies a thick, protective layer that is resistant
to chipping and scratching, ideal for parts that face harsh
conditions.
- Painting: Provides color customization and additional protection
against environmental factors.
- Passivation: Treats the surface to reduce chemical reactivity and
prevent corrosion on magnesium parts.
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.
|
Application Range:
Car engine accessory bracket, clutch housing, gearbox housing,
instrument panel frame, steering wheel frame, seat frame, valve
body mobile phone,Drone/camera.Magnesium alloy is very suitable for
this kind of product because it is very light.
Why is magnesium hazardous?
While a magnesium workpiece is very difficult to ignite, the
material becomes highly flammable when turned into powder or
shavings.
This means the chips from machined magnesium can pose a fire safety
risk.
That risk to machine shops is heightened because magnesium-induced
fires are very difficult to extinguish. The combustion will
persevere in nitrogen, carbon dioxide and water. (This is why
magnesium powders have historically been used in some explosive
devices.)
The Characteristics of Magnesium Parts Can be as follows:
- CNC machining magnesium product have high strength, the ratio of
strength to quality of magnesium alloy has a capacity.
- Magnesium parts have small elastic modulus, good rigidity, strong
shock resistance, and are not easily deformed after long-term use.
- Magnesium machining product have good resistance to electromagnetic
interference and shielding.
- Magnesium machining product do not pollute the environment.
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 |
Our Advantages of Precision Machining
There are huge numbers of precision machining providers. Why should
you choose us? Here are the top 3 reasons:
1. Experience
Our engineers have built up rich, deep experience from many
previous projects, so they can handle complex and precision parts
in several industries without a problem.
2. Advanced Equipment
JYH CNC Precision machining has extensive in-house equipment for
both manufacturing and testing. Your parts will be manufactured and
inspected with our advanced in-house equipment, including Precision
CNC milling, CNC turning, EDM, Hexagon CMM, and Olympus XRF
analyzer.
3. Fast Turnaround
On average we return quotes within 24 hours, parts ship within 7
days or less, and we have a 99% on-time delivery and quality rate.
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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Magnesium Sample Pictures for your reference:
JYH technology, Your Professional CNC Machining Magnesium Alloy
Services Partner!
