InVinCer Rx from Blasch, over 99% silicon carbide, for low mass kiln furniture, setters and burner parts.
Every pound of kiln furniture is heated and cooled with every load.
Thinner, stronger supports put that energy into the ware instead.
Recrystallized silicon carbide is used mainly for kiln furniture: beams, batts, plates, setters, saggers and supports that carry heavy loads unsupported at high temperature without sagging, and for burner nozzles and tips. Because it keeps its strength when hot and resists thermal shock and oxidation, the furniture can be made thinner and lighter. Blasch InVinCer Rx is over 99% silicon carbide with a room temperature modulus of rupture of 13,800 psi.
Recrystallized silicon carbide (RSiC or RxSC) is nearly pure silicon carbide. The part is shaped from SiC grains and fired at very high temperature, where the grains bond to each other directly, without a second phase that could soften or creep at temperature.
The result is a strong, open structure: high hot strength and creep resistance, good thermal shock and oxidation resistance, and some open porosity. InVinCer Rx is the Blasch grade.
Values from the Blasch InVinCer Rx product information sheet.
| Property | InVinCer Rx |
|---|---|
| Composition | over 99% SiC |
| Apparent porosity | under 15% |
| Modulus of rupture, room temperature | 13,800 psi (95 MPa) |
| Bulk density | 165 lb/ft³ |
| Erosion, ASTM C704 | 2.4 cc loss |
A kiln heats its furniture every cycle along with the ware, so every pound of support you remove is energy, time and space that goes back to the product.
Low mass kiln furniture: beams, batts, posts and setter plates for firing ceramics, sintering powder metal parts and calcining. A properly designed low thermal mass system can significantly reduce fuel costs, improve airflow around the ware and free space in the kiln for more product.
Load at temperature: InVinCer Rx is designed to carry heavy loads unsupported at high temperatures without sagging, which thick refractory plates achieve only through mass.
Burner nozzles and tips: parts in the flame that have to take thermal cycling and oxidation.
Wear linings: Rx is also one of the grades Blasch uses for liners in CeraLine lined pipe and elbows.
Kilns used to be furnished with thick bricks, blocks and plates. They were sturdy, but most of the energy went into heating the furniture, and heat up and cool down took longer. Blasch engineers furniture around your ware instead, with recrystallized silicon carbide where load and temperature demand it.
Where temperatures stay up to 1,000 °C and loads are light, cordierite is the lower cost choice. For dense wear parts, see ALTRON alumina bonded silicon carbide.
Furniture and burner parts for industrial process heating.
Low mass beams, plates and muffle liners engineered around your ware.
Containers and setter plates for powders and parts in sintering.
Ceramic tips for burners and flares that see flame and cycling.
Recrystallized silicon carbide parts go to industrial process heating, heavy industrial processing and power generation.
InVinCer Rx values and uses: Blasch InVinCer Rx product information sheet and material page; Blasch kiln furniture product page; Blasch CeraLine presentation. Recrystallization of silicon carbide: W. D. Kingery, H. K. Bowen, D. R. Uhlmann, Introduction to Ceramics, 2nd ed., Wiley, 1976.
Both are nearly pure SiC. Recrystallized SiC keeps some open porosity and is used for kiln furniture; sintered SiC is dense and used for seals, wear and chemical service.
There is no glassy or metallic phase between its grains that could soften at temperature, so the part keeps its shape under load.
Yes, through design. Thinner furniture with less mass heats and cools faster and takes less energy per cycle than thick refractory supports.
Send the ware, the kiln and the firing profile. A Blasch engineer designs a lighter furniture system around your load.
