Sintering workshop

used for low temperature pyrolysis removal of organic binder from the ceramic green body. It adopts a stepped heating curve and inert gas protection （N₂/Ar）to prevent cracking and deformation for the green body, providing a pure substrate for high temperature sintering.

Core function:
Achieve ultra-high temperature densification sintering of ceramic green body in the air and controlled atmosphere.

Technical breakthrough:
Vertical lifting sealing design reduces heat loss by 40%
Multi zone independent temperature control ( Max 1800℃±3℃ )
Integrated atmosphere precise control module （O₂content ＜ 10ppm）

Apllication value:
Suitable for batch sintering of structural ceramic of alumina and zirconium.

一．Ceramic green body pretreatment
Physical testing : Laser scanning of green body size tolerance （±0.1mm）
Surface treatment: plasma cleaning remove dust and enhance sintering activity.

二．Degreasing and glue-removing
Equipment:
Degreasing furance （N₂/Ar protection）

Process points:
Heating step by step: 5℃/min gradually rising to 450℃ ( to avoid stress crack )
Negative pressure pumping: Vacuum degree 10⁻²Pa, clear up all cracked gas
Excess carbon control: ＜100ppm ( to prevent sintering black cores ）

三．High-temperature sintering
Equipment:
Multi-temperature zone energy-saving lifting furnace ( Max 1800℃ ）

Precise control:

Parameter	Control range	Function
Heating rate	2-10℃/min (adjustable in sections)	suppress abnormal crystal grain growth
Peak temperature	±3℃（Al₂O₃: 1600℃）	determines crystal grain boundarydiffusion strength
Insulation time	30min-8h (depending on thickness)	to achieve pore closure＞98%
Atmosphere oxygen content	O₂＜5ppm（N₂/H₂mixed）	to prevent metal ion oxidation