Silicon nitride thermocouple protection tube
Silicon nitride thermocouple protection tube is gradually replacing ceramic products such as 99 ceramic alumina, silicon carbide, nitrogen and carbon combination with its performance (corrosion resistance) .
Silicon nitride thermocouple protection tube (special for aluminum industry) has very good thermal conductivity for aluminum solution, so it responds quickly to temperature changes and has high sensitivity. It is widely used as temperature measurement protection for non-ferrous metal liquids such as aluminum liquid. High impact resistance, light weight, easy operation, simple maintenance and long service life.
氮化硅热电偶保护管指标:
1,气压氮化硅参数：
氮化硅技术参数 指标
化学成分（Si3N4） >92% 抗压强度 >1500Mpa
密度 3.2g/cm3 导热率 16-22 W/m.k
硬度(HRA) >92 热膨胀系数 3.2-3.4*10-6k
抗折强度 >600Mpa 工作温度 1400°C
2，反应氮化硅参数：
氮化硅技术参数 指标
化学成分（Si3N4） >92% 热膨胀系数 2.6*10-6k
密度 2.4g/cm3 气孔率 <10%
硬度(HRA) >85
抗折强度 >200Mpa
工艺：
1、冷等静压成型
2、机械加工
3、反应烧结气压烧结
氮化硅保护管特点：
1、良好的致密性、强度高
2、的导热性、抗热冲击性
3、与铝熔液等有色金属熔液不浸润、耐腐蚀
4、耐高温、热膨胀系数低
尺寸规格：
外径(mm) 内径(mm) 长度(mm)
16 8 300-600
22 12 300-1200
28 16 300-1200
30 18 300-1200
45 25 300-1200
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