Rigid calcium silicate tubes and shapes from Blasch for low pressure die casting and aluminum transfer.
Most calcium silicate goes around steam pipes as insulation.
In a foundry it carries molten aluminum.
In molten aluminum handling, calcium silicate is used for rigid tubular shapes such as riser and stalk tubes in low pressure die casting, and for other parts that touch the melt and have to keep it hot. Aluminum alloys do not wet it, and it insulates well, so metal neither sticks to the part nor loses heat through it. Blasch produces calcium silicate as rigid tubes and shapes for nonferrous metals, not as pipe or block insulation.
When you search for calcium silicate insulation, most results are pipe covering and block insulation for hot process lines. That is a lightweight, low density product that keeps heat in a steel pipe.
Blasch calcium silicate is a rigid shape for direct contact with molten aluminum: a tube or fitting that the melt flows through or around. It shares the insulating behavior and adds resistance to wetting by aluminum alloys. Blasch does not supply calcium silicate pipe insulation.
A calcium silicate tube is chosen less for what it withstands than for what it keeps: the heat of the aluminum inside it.
Low pressure die casting: riser and stalk tubes carry metal from the holding furnace up into the die. A non wetting, insulating tube keeps the metal from sticking and from cooling on its way up.
Transfer and pouring: spouts and nozzles in aluminum transfer, where the metal should lose as little heat as possible.
Insulating parts next to the melt: shapes that separate hot metal from structures that should stay cooler.
Calcium silicate is an economical insulating choice, but Blasch AlTech aluminum titanate riser tubes deliver considerably longer service life and higher reliability than calcium silicate, cast iron or fused silica. Where a tube runs long campaigns, compare both before you reorder.
For non wetting parts that also need wear resistance, oxide bonded silicon carbide such as OXYTRON is the sturdier option.
Blasch uses and properties: Blasch calcium silicate material page and riser tube product page. General properties of calcium silicate insulation: product literature of the pipe insulation trade as shown in the search results; no Blasch values available.
Parts for aluminum die casting and transfer.
The longer life option for riser and stalk tubes in die casting.
Calcium silicate parts from Blasch go to molten metal operations, mainly aluminum die casters and foundries. For another material that molten aluminum does not wet, see OXYTRON 015XDII, and for heavy wear parts, tungsten carbide.
No. Aluminum alloys do not wet Blasch calcium silicate, so metal does not stick to the part.
No. Blasch makes rigid calcium silicate tubes and shapes for molten metal, not insulation for steam or process piping.
Calcium silicate insulates and costs less; aluminum titanate lasts considerably longer and is the choice for long campaigns.
Send the dimensions, the alloy and the casting process. A Blasch engineer recommends calcium silicate or a longer life material.
