Large-Diameter Fused Silica Furnace Tube Solves Batch Sintering Challenges-Amy
Δημοσιεύτηκε στις: October 22, 2026
Lianyungang Shengfan Quartz presents a practical application case of large-diameter fused silica furnace tubes for industrial high-temperature batch thermal treatment.
One customer engaged in advanced material sintering previously used small-diameter furnace tubes. Limited inner space meant low single-batch output. When they tried to enlarge the tube size with ordinary borosilicate glass, failures occurred frequently. Borosilicate glass cannot sustain long-term working above 500°C; it deformed easily under continuous high heat, suffered thermal cracking during temperature cycling, and precipitated impurities which contaminated sintered samples. The customer could not expand production as planned.
The customer turned to customized large-diameter JGS2 fused silica furnace tubes from Shengfan Quartz. Made of high-purity fused silica with ultra-low thermal expansion, the tube runs stably at continuous temperature up to 1100°C and withstands repeated heating and cooling cycles. It features excellent chemical inertness, low outgassing and no impurity precipitation, protecting the purity of sintered materials.
Our team controlled straightness, roundness and wall thickness strictly during processing. Fire-polished ends and customized flanges ensure reliable sealing with the furnace body. After installation, the usable space inside the furnace increased greatly, lifting single-batch production capacity. The tube keeps stable shape without deformation or cracking after hundreds of heating cycles, cutting downtime and replacement frequency.
For low-temperature processes, borosilicate glass tubes are cheap and acceptable. But for high-temperature batch sintering, diffusion and calcination, large-diameter fused silica quartz tubes show obvious advantages. Though the initial purchase cost is higher, they bring higher throughput, stable product quality and lower comprehensive operation cost.
Shengfan Quartz can fabricate large-size quartz furnace tubes with custom diameter, length, wall thickness, side ports and flange structures. We support trial sampling and bulk export orders for new energy, powder materials, semiconductor and research institutes. Our engineers can provide structural suggestions according to furnace size, temperature curve and atmosphere conditions.
