thermal refining

The thermal refining defect of rod head was eliminated by the tracking preheat treatment of rod head to improve the reliability of the pumping rod application.

采用杆头跟踪预热处理技术，消除了杆头调质缺陷，提高了抽油杆应用的可靠性。

Theoretical model of refining thermal structure of continental lithosphere with gravity observations

利用重力资料精化大陆岩石圈热结构的理论模型

Abstract Refining furnace line life of extra-low carbon ferrochrome is shorter, in order to monitor the line's erosion condition, thermal couple is placed in the bottom of furnace.

微碳铬铁精炼炉的炉衬寿命较短，为监测其侵蚀情况，在炉底埋设热电偶。

Gear with precise design and high quality closely combines with thermal refining worm.

精密设计高品质齿轮与调质处理蜗杆紧密结合。

Development and application of long-life well block of purging plug for ladle The wear reason of slit purging plug used in the large refining ladle has been analyzed in detail in the paper, that is the thermal stress and strong erosion and abrasion.

长寿命钢包透气砖座砖的开发与应用对狭缝式透气砖在大型精炼钢包中的损毁原因进行了分析，热应力和强大的冲刷磨损作用是两个主要因素。