反击式水力机械经常出现的一些问题,通过采用适当的材料和设计可以消除或减轻,在设计和修复阶段,如果注意这些问题,就能显著地减少其影响并有助于延长机组无故障运行时间。对混流式机组,整体密封或止漏环消除了断裂和松动的问题。如果使用一种耐腐蚀耐磨损和耐空蚀的基体材料,可使该设计方案更加完善。 转轮制造可以采用铸造、锻轧件焊接的方法,或者是以上两种方法相结合。在以后需要进行焊接时,奥氏 Frequent problems with impact hydraulic machines can be eliminated or mitigated through the use of appropriate materials and designs, which can significantly reduce their impact during the design and repair phases and help to extend the unit’s trouble-free operation time . For Francis units, the integral seal or gland eliminates the problems of breakage and loosening. This design is complemented by the use of a corrosion-resistant, wear-resistant and erosion-resistant base material. Wheel manufacturing can be used for casting, forging rolling welding method, or a combination of the above two methods. After the need for welding, austenitic