Machining Magnesium Alloy Workpieces:

What should be consider when machining magnesium alloys?
 
High speeds, large depths of cut and high feeds can be use when machining magnesium alloys. The energy required to cut magnesium alloys at the same cutting speed. is much lower than for other metals.Magnesium alloys have good mach inability. and can be use for fast and heavy cutting at high feed rates. Large-scale automatic machining centers. or numerical control of computer tools can be use for machining. The production efficiency is high. the number of machine tools is reduce, the floor space is small, and the capital investment is save. , labor costs and administrative burdens will be reduce.
 

It has good mach inability and easy processing. especially when the processing volume is large.

 
Due to the high thermal conductivity and low cutting force of magnesium alloys. the heat dissipation rate is fast during machining, so the tool life is long. and the adhesive force is low, which can reduce tool costs and reduce tool change downtime. Usually only one surface finish is must to achieve the desired final surface quality. and Magnesium machining also has very good impact properties.
 
  • Chip formation Chips created by turning. drilling and milling with a single tool can be divide into three categories. thick and short chips created with high feed. chips that are not too long and can break at medium feed rate; Long, curved muzzles for small baits. Casting tends to form broken or broken chips, and the shape. of the chips is relate to the heat treatment condition.
 

Forgings and extrusions produce chips that. are broken or curled depending on the feed rate.

 
Deformation . when machining magnesium alloy work pieces, the temperature. that the work piece can reach is not high, so the work piece is almost not deformed. or the amount of deformation is small. because magnesium alloys have good heat dissipation properties. If the cutting speed is high and the feed rate is high. a large amount of cutting heat is generate and the work piece may be deform.
 
Thermal expansion If the heat released during the machining. of magnesium alloys is large and the. accuracy of the dimensional deviation of the work piece is very strict. then the coefficient of thermal expansion of magnesium alloys. should be take into account. Magnesium’s coefficient of thermal expansion is larger than . aluminum and much greater than that of steel.
 
If we can create magnesium parts from sheets
 
Such as perforated steel and aluminum parts, we can achieve approximately 80% higher. material yields and work more , due to lower processing temperatures. But, magnesium is know to be not malleable as it is very resistant to deformation. due to its tight-fitting hexagonal structure. The only way is to heat the magnesium from the magnesium. because the deformation of the magnesium. above 225 degrees Celsius makes the more gliders work.
 
Extensive process research in this area has resulted in some available. deep drawing hydraulic presses for stretch forming. Recently, research on hot-drawn magnesium for the manufacture of mobile phone. frames has demonstrated that walls as thin as 0.4 mm can be achieve on a consistent basis. Metal graphic tests of the chassis also showed no porosity and increased stiffness.
 

Although current therm forming press systems are complex to operate

 
And need per-production of impact and force . profiles for specific products using data acquisition modules. and mold simulation software, a substitution may be possible. The increasing use of aluminum and magnesium-containing . plastics for portable electronics is accelerating this process. The first progressive users of this technology will have. the advantage of being a pioneer in the competitive global manufacturing industry.

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