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Graphite sagger is a widely used high-temperature holding vessel in sintering industries. It is designed to contain raw powder, green parts and functional materials during heating inside kilns and vacuum furnaces. Unlike ordinary ceramic saggers, graphite saggers stand out for excellent thermal performance and chemical stability. Dongguan Jiecheng Graphite Products Co., Ltd., established in 2003, custom-machines graphite saggers with matched lids, positioning bosses and inner grooves for different sintering lines.
Core Product Features
Graphite sagger has an extremely low coefficient of thermal expansion. When the furnace temperature rises and drops rapidly, the internal stress stays low, so the sagger resists thermal shock cracking. It features great chemical inertness and will not react with most oxide, non-ferrous and ceramic materials under inert or vacuum atmosphere. High-purity graphite grades have very low ash content, which prevents impurity contamination of sensitive sintered materials. Good machinability allows us to produce integral saggers with complex cavities, step structures and matching covers. The material also transfers heat evenly, helping achieve consistent sintering quality across all batches.
Main Application Scenarios
- Lithium battery cathode and anode material sintering in roller kilns and pusher kilns
- Structural ceramics, ceramic substrates and piezoelectric ceramic sintering
- Ferrite and other magnetic material high-temperature processing
- Powder metallurgy, hard alloy and non-ferrous metal powder sintering
- Vacuum heat treatment and sintering of special alloy and rare earth materials
Many sintering plants switch to graphite saggers to cut scrap rates caused by uneven heating and contamination. Jiecheng Graphite can adjust graphite grain size, density and purity according to your kiln atmosphere, peak temperature and cycle frequency. Each batch comes with material test reports, and worldwide delivery is available.
