新开发了高密度(HD 型)硅碳棒，其具有密度高、 气孔率低、抗折强度高、耐腐蚀、使用寿命长等优点。

经实验室测试和客户试用，在各种工况条件下寿命比普通产品都提高了50~300%,包括在1530℃的间歇炉内对比、

1400℃的连续炉内对比，以及强碱气氛炉内对比等。

比如在实验炉1400℃连续加热4200小时后，洁净的空气气氛，表面负荷约4W/CM² 条件下，

普通棒电阻增 长了约62%,平均每1000小时增长约14.7%;而高密度棒电阻只增长了约32%,平均每1000小时增长约7.7%。‌

The latest development is high-density (HD type) silicon carbide rods, which have the advantages of high density, 

low porosity, high flexural strength, corrosion resistance, 

and long service life. After laboratory testing and customer trials, 

the lifespan of the product has been increased by 50-300% compared to ordinary products under various working conditions,

 including comparison in an intermittent furnace at 1530 ℃, a continuous furnace at 1400 ℃, 

and a strong alkali atmosphere furnace. For example,

 after continuous heating at 1400 ℃ for 4200 hours in an experimental furnace,

 under a clean air atmosphere and a surface load of about 4W/CM ², 

the resistance of a regular rod increased by about 62%, with an average increase of about 14.7% per 1000 hours;

 However, the resistance of high-density rods only increased by about 32%, with an average increase of about every 1000 hours7.7%.