The process of heat treatment on Magnesium Alloys
If Magnesium alloy has an element of the types and levels are adequate and have certain properties to achieve the desired properties can be considered to be improved as well as the possibility of improvement through a process of heat treatment, but to an increase in the voltage only aluminum and magnesium with rare metal element that allows can be improved, it is still dependent on the suitability and accuracy of the procedure so that the implementation can be achieved in accordance with the needs of nature, to the following procedure is part of the conduct of the treatment of magnesium, among others:
1. The Natural Ageing
2. Precipitation treatment
3. Precipitation Solution previus without treatment (without dissolving the initial deposition) Thus this alloy material must be cooled in the air or diquenching after dissolution process with the correct procedure.
Magnesium can be formed through various casting methods like Sand-Casting, Die-Casting and Die Casting pressure, with various dimensions including for forging such as rolling, Forging and extruding. In the rolling process of wrought magnesium alloys appeared to have differences in tensile strength, stress resistance and the length in the direction of the percentage pengerolannya, where rolling in the transverse direction (transverse direction) is higher than the rolling in the longitudinal direction (longitudinal direction).
Formation by machining (Machining) is often required special attention because at the end of cutting often occurs kegosongan (charred) which resulted in the rest of the cuts to be highly flammable, it is caused by the friction during cutting, to the sharpness of the cutting tool must be considered as well as providing equipment appropriate fire extinguisher is a dry-fire extinguisher. Water cooling process with the media base is not appropriate Colant use.
The process of switching to the most appropriate Magnesium is the bolt (bolting) or on the rivet (riveting), but can also be welded by arc welding using argon bususr, oxy-assetyline or the electrical resistance method.
To protect against the effect of interference magnesium surface corrosion can be done by providing a protective coating with paint first released from oil or GREACE and would be better if first coated with Chromat, with this method the surface conditions will persist without significant change in the resonance period.
To protect from corrosion attack galvanized Magnesium alloy parts that relate to the other, exposed to electrolyte solution or moist then this section should be coated with paint or Jointer Compound if the metal has a very small potential difference as Aluminum with Magnesium, but if Magnesium steel attack with broad contact out of reach, it can also be used non Conductor gaskets.
Various application of magnesium alloys
Cast magnesium alloy formed by molding sand (Sand-Cast) is widely used in the manufacture of the blocks in motor fuel engine, while magnesium is formed with Pressure Die-Casting lot digunanakan in the manufacture of household appliances and office fittings.
Cast magnesium wrought formed by extrusi and used as Trap and relling stairs. Magnesium alloys are also used in Nuclear Technology as Uranium tube which is very low in magnesium absorption in the neutron cross section.