電磁換向閥電磁鐵的溫升原因
2023-2-1 10:32:36
液壓電磁閥電磁鐵設計及制造均采用H級耐熱等級，正常工作中的溫升無需擔心電磁鐵使用壽命。下面大蘭液壓系統廠家帶大家來簡單了解一下直流電磁鐵的溫升與交流電磁鐵的溫升。
直流電磁鐵的溫升：直流電磁鐵溫升的唯一原因是由銅損引起的線圈溫升。其程度取決于電流密度及散熱狀況。一般情況下，直流電磁鐵的溫升小于交流電磁鐵。交流電磁鐵的溫升：交流電磁鐵的溫升由銅損及鐵損共同引起。取決于以下幾點：1.鐵芯渦流損耗與磁滯損耗。2.疊層鐵芯鉚釘間循環電源引起的損耗。3.短路環引起的損失。4.激磁內阻引起線圈電阻損耗。另外與操作頻率有關，頻率越高，處于啟動電流時間越長，溫升也會越高。當電磁換向閥無法正常工作，常見如因外力導致閥芯卡阻無法移動時，電磁鐵通電后無法將銜鐵吸附至正常位置，磁通路受阻，線圈溫度將急劇升高，特別對于AC交流電磁鐵，極易短時間內造成線圈燒毀。因此在使用中應注意液壓系統的清潔度，避免電磁換向閥故障，延長使用壽命
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©2025 電磁鐵-推拉式-微型電磁鐵廠家-定制生產商-東莞磁心科技 電腦版
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