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离心混凝土制品的质量除取决于混凝土配合比、配筋量及其施加的预应力、离心制度和养护制度等因素外,钢模是关系制品质量的关键设备。钢模在离心过程中承受很大离心力及振动力,还有蒸养过程中的热应力、钢筋的预应力(指预应力混凝土制品)、自应力混凝土膨胀力(指自应力混凝土制品)、钢模制造的焊接应力、钢模反复使用过程中所产生的疲劳应力和锈蚀等因素的影响,致使钢模在使用过程中易产生变形。变形弯曲的钢模不但严重影响产品质量,还会引起钢模剧烈
The quality of centrifugal concrete products depends on factors such as the mix ratio of concrete, the amount of reinforcement, and the applied prestressing force, centrifugal system, and maintenance system. Steel molds are the key equipment for the quality of products. The steel mold undergoes large centrifugal and vibration forces during the centrifugation process, as well as thermal stress in the steaming process, prestressing of the steel bars (referring to prestressed concrete products), expansion force of the self-stressing concrete (referring to self-stressing concrete products), and steel The welding stress produced by the mold, the fatigue stress and corrosion caused by the repeated use of the steel mold, and the like, cause the steel mold to easily deform during use. Deformed and bent steel mold not only seriously affects product quality, but also causes severe steel mold