Magnesium has been utilized in production portable computers frames, video cameras, electronic cameras, PDAs and other gadgets products due to its high power to weight ratio. When magnesium is alloyed with aluminum, the resultant product is very light and powerful, and easily machinable.
The key problem in machining magnesium alloy may be the danger of fire ignition when dry cutting. Fire may possibly occur once the melting point of the mix (400-600 degrees Celsius) is realized during machining. The small chips and fine dust produced all through cutting may also be highly flammable and pose a serious fire risk or even precisely handled.
There are numerous points to notice when machining magnesium:
Firstly, use a lower cutting speed in comparison with cutting metal. The workpiece temperature goes up having an increase in cutting speed and also smaller undeformed chip thickness. In other words, the slower the machining speed and the larger the chips, the lower the temperature is going to be. Due to this reason, some organizations have modified woodworking tools for machining magnesium so as to obtain larger chips and lower fire hazard.The cutting tools used must have relief and clearance angles that are sufficiently large to avoid unnecessary cutting tool-workpiece friction, thus lowering the heat developed during the cutting process. messer cs oxyfuel technology catalogue
Minute, keep the machining center clear. Storing the magnesium chips effectively and washing the machining centers frequently are very important areas of machining magnesium. Keep a jar of cast iron chips not far from when machining magnesium, If fire occurs, smother the fire with the cast iron chips.
Additionally, if coolants are essential for high speed machining, do not use water-based lubricants. Alternatively use a light mineral oil, or perhaps a water-soluble chopping liquid such as Castrol Hysol MG specially developed for machining magnesium. Some companies in Japan use semi-dry machining via a misting system.
The last point is to check the temperature throughout machining. Experiments were carried out using thermocouples installed in to the workpiece to monitor the temperature during machine. Dry cutting of magnesium alloy thin walls was accomplished using cutting speed of 440m/min for roughing and 628m/min for fine finishing.
Inspite of the fire risks, magnesium becomes increasingly found in electronics products and services, and as competition from overseas low-cost production bases intensifies, many machining work stores may well find machining of magnesium a distinct segment worth pursuing. messer cutting and weldingmesser cs oxyfuel technology catalogue
The key problem in machining magnesium alloy may be the danger of fire ignition when dry cutting. Fire may possibly occur once the melting point of the mix (400-600 degrees Celsius) is realized during machining. The small chips and fine dust produced all through cutting may also be highly flammable and pose a serious fire risk or even precisely handled.
There are numerous points to notice when machining magnesium:
Firstly, use a lower cutting speed in comparison with cutting metal. The workpiece temperature goes up having an increase in cutting speed and also smaller undeformed chip thickness. In other words, the slower the machining speed and the larger the chips, the lower the temperature is going to be. Due to this reason, some organizations have modified woodworking tools for machining magnesium so as to obtain larger chips and lower fire hazard.The cutting tools used must have relief and clearance angles that are sufficiently large to avoid unnecessary cutting tool-workpiece friction, thus lowering the heat developed during the cutting process. messer cs oxyfuel technology catalogue
Minute, keep the machining center clear. Storing the magnesium chips effectively and washing the machining centers frequently are very important areas of machining magnesium. Keep a jar of cast iron chips not far from when machining magnesium, If fire occurs, smother the fire with the cast iron chips.
Additionally, if coolants are essential for high speed machining, do not use water-based lubricants. Alternatively use a light mineral oil, or perhaps a water-soluble chopping liquid such as Castrol Hysol MG specially developed for machining magnesium. Some companies in Japan use semi-dry machining via a misting system.
The last point is to check the temperature throughout machining. Experiments were carried out using thermocouples installed in to the workpiece to monitor the temperature during machine. Dry cutting of magnesium alloy thin walls was accomplished using cutting speed of 440m/min for roughing and 628m/min for fine finishing.
Inspite of the fire risks, magnesium becomes increasingly found in electronics products and services, and as competition from overseas low-cost production bases intensifies, many machining work stores may well find machining of magnesium a distinct segment worth pursuing. messer cutting and welding messer cs oxyfuel technology catalogue