The high pressure removes all air and gas bubbles, aligns the molecules forming a solid block of aluminum that is high in density without any visible grains or defects. The size and shape of the billet depends on the part which is to be carved out of it. Billets can be further processed to make bar stock and wire. So, aluminium alloys are cast in billets to make automotive, aerospace parts and also for other applications like packaging, construction, electrical and electronics.
Aluminium billets can be produced out of primary as well as remelt or secondary aluminium. Here is a list of top five leading aluminium billet producers in the world based on their product range, market coverage, applications and sales volume.
The list is dynamic depending on changing market conditions as more and more new players from Asia are venturing into aluminium and aluminium product business and taking away the market share. Norsk Hydro, one of the leading aluminium producers in the world, makes extrusion billets for its extruded profiles. Hydro has developed a range of standard alloys billets covering customer needs. They are known for:. Hydro is also a global leader in high purity aluminium and offers the highest quality standards in various billet forms.
Rio Tinto Aluminium delivers high quality aluminium products with strict quality control and environmental regulations.
Of the 3. The company also produces specialty billets for niche applications such as heat exchangers and cylinders. The alloy billets adhere to best practices across the global network of smelters and casting centres. Alcoa, one of the leading aluminium producers in the world is known for its global network of aluminium casthouses that produce a complete portfolio of aluminium billet, foundry ingot, rolling slab, rod, powder, high purity and P, including proprietary alloys designed for high-end applications.
The aluminium major produces soft and hard alloy aluminium billet using modern casting and mould technology for extrusion, forging, and impact extrusion applications for use in many products and end markets. Speaking of cost, why are billet parts more expensive than cast? Primarily it has to do with scale. With casting, the more parts you want to make, the cheaper it gets because you can cast multiple parts at the same time using copies of the same mold.
The other thing about machining is that it requires more material than the part actually needs. You start with a big billet, then cut it down to size. Finally, running a CNC machine requires skilled workers. And those definitions are way down the page! It turns out the reasons why you want billet parts are pretty much spot on, but now you know what makes billet better. This was a pretty quick explanation.
There are a whole lot of factors that go into making metal weaker or stronger from the time the scrap is melted down to the time a part is installed on your vehicle. But basically, this is it. We have billet differentials , billet portal gear lifts , billet radius arms , and more stuff coming all the time. There are other manufacturing websites that say forging is stronger because of the heating process as well as a stamping. Excellent information. Thank you for clearing that up for me!
There are a ton of misconceptions out there. Honstar Aluminum Products Co. One stop solution for your aluminum extrusion profile request! Your email address will not be published. One Stop Service! Home Blog Aluminum extrusion What is the difference between cast aluminum billet and extruded aluminum bar? What is the difference between cast aluminum billet and extruded aluminum bar? You May Also Like What is the difference between organic dyeing and electrolytic coloring for aluminum profiles?
Note how much lower the yield strength is than the tensile strength. Keep this number in mind as we go on. However, these numbers are not the whole story. You need to know how casting works to understand that. To make a cast part, you first have to melt down A aluminum and pour it into a mold. The mold is then carefully cooled and removed to give you the part you need. Billet aluminum is generally considered a stronger material than cast. Billet parts are made from a single block of material that is machined down on a CNC mill.
Again, the materials used are more important than the process used to form them. For our billet portal boxes, we use T6 manifold quality billet aluminum. So while the ultimate tensile strength is less on , the yield strength and shear strength are both significantly higher. We alluded to the other huge advantage of CNC-machined billet earlier—ultimate precision. We can make exactly what we design, which gives us the freedom to make it even stronger.
One of the big buzzwords on the portal scene right now is forged aluminum. Materials make all the difference. There are lots of different aluminum alloys that could be used in a forged aluminum part. The cool thing about forging is that it alters the internal structure in a good way.
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