Through analysis of performance the steam cylinder, it is believed that the main factors affecting the safe application performance of high temperature bolts are under and non-homogeneous pretightening loads.

• 摘要通过对汽缸结合面高温螺栓的性能试验分析，认为预紧力过大和预紧力不均匀是影响高温螺栓安全使用性能的主要因素。