板坯结晶器窄面调宽机构的优化

唐钢公司第一钢轧厂1#板坯连铸机结晶器窄边锥度变化较大是影响铸坯拉速及质量的重要原因,结合借鉴3#、4#机调宽结构的设计要点,通过对1#机窄面调宽机构的优化和完善,稳定了1 700板坯连铸生产,提高了板坯质量,延长了结晶器铜板的使用寿命。

定宽侧压机调宽机构压靠分析及对策研究

对定宽侧压机调宽机构的传动负荷及压靠问题进行了分析,提出并实施了相应的压靠预防措施及解压靠对策,为同类定宽侧压机的设计及维护提供参考。

A Kind of PWM Pneumatic Servo Control System——Modulation Methods and Dynamic Responses

Vibrations or dither's are features of the PWM servo control system in their steady outputs. On the grounds of analyses and experiments of a PWM pneumatic servo control system, the paper puts forward four varieties of PWM modulation methods, and concludes on the relationship between dithers and the different methods, and then discusses the influence of friction to the dithers. Results from experiments regarding the dynamic and static responses on the given system support the theories presented.

A New Approach to Improve the Matched Responses of High-Speed PWM Mode Electropneumatic Actuators

A new approach to improve the matched responses of high-speed PWM mode electro pneumatic actuators is introduced. By modifying the control signal, the matched responses are highly improved. For testing this new approach, an instrument is designed and developed. And the effectiveness of the approch is proved by experiment. The block diagram of the instrument is also presented.

连铸机结晶器调宽结构设计优化

某钢厂连铸机结晶器调宽在使用过程中存在一些问题,包括零件腐蚀严重、连接螺栓易脱落、电机过载、精度不够等。造成以上问题的原因为保护套密封性较差、连接螺栓设计不合理、电机额定功率偏低、连接结构复杂。对原设计进行了优化。设计优化后的调宽机构通过一段时间的使用效果良好,不仅提高了精度,而且大幅降低了维护成本和备件材料费用。

板坯连铸结晶器跑锥分析与防范

基于板坯连铸机结晶器的机械调宽结构时常出现的跑锥现象进行了分析,提出了防止跑锥的有效措施。采用上拉下推调节后,浇铸相同断面板坯过程中,除了个别炉次结晶器上口宽度发生2 mm的偏差外,其他炉次均未发生变化,而结晶器锥度最大偏差仅为0.2 mm。实践证明,上拉下推式调节方法可以有效防止跑锥现象。