Generally there is a huge application of powder metallurgy produced parts, especially in the automotive industry.
The complexity of these parts however can mean that through the presence of pores crack propagation can be a very real problem which needs to be addressed through various alloying and process techniques. Continue reading
Low superheat casting is similar to the better known SSM technique which can be applied primarily to produce billets with a low cost advantage.
In the LSC process, the alloy is rapidly solidified and cast with a low pouring temperature which is typically just above the liquidus temperature. Continue reading
Vacuum die casted materials have many applications in the automotive industry as well as a number of other commercial industrial sectors.
The main benefits of VDC as opposed to other more traditional methods of casting include a higher quality surface finish, improved mechanical properties and an overall better finished product stability. Continue reading
Aluminum is well established at the front of the pack with regards to providing the technological answer to the increasing challenges of light weighting whilst maintaining integrity of the material for the desired applications.
Semi solid rheocasting is a development within the casting sector which enables improved quality in die casting without increasing cost. Continue reading
One of the main casting defects is hot tearing or hot cracking, or hot shortness. Irrespective of the name, this phenomenon represents the formation of an irreversible failure (crack) in the still semisolid casting. Although in most works hot tearing is considered as a phenomenon linked to the inadequate compensation of solidification shrinkage by melt flow in the presence of thermal stresses, there are more factors that could be involved in the formation of cracks at supersolidus temperatures.
Defects and anomalies are an everyday challenge within the framework of foundry technologies. As demand for castings with very specialized applications rises, the issue of quality becomes more important.
The Rheo Casting process involves using slurry in a semi solid state with the amount of benefits directly linked to the fraction solid at the time of casting. Advantages can include a reduction in shrinkage and significantly reduced latent heat.