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                                        汽車制動軟管的壓力試驗方法

                                        2015-03-17 0

                                        試驗條件

                                        1、用于試驗的軟管總成應是新的,應至少經過24h時效。實驗前軟管總成在15-32℃溫度至少保持4h。

                                        2、撓曲疲勞試驗和耐低溫試驗的軟管總成,在安裝到試驗設備上之前必須拆除全部附件,如鋼絲護套,橡膠護套等。

                                        3、處耐高溫試驗,耐低溫試驗,臭氧試驗,軟管接頭耐腐蝕試驗外,其他試驗必須在室溫為15-32℃的范圍內進行。

                                        試驗方法

                                        1、氣密性試驗

                                        將軟管總成的一端封閉,從另一端充以空氣或惰性氣體至1.4MPa,浸入水槽中保壓3min,觀察有無氣泡產生的局部膨脹,并記錄。

                                        2、爆裂試驗

                                        緊接長度變化率試驗之后,將樣品保持自然松弛狀態,以大約6.9MPa/min的加壓速率施加水壓,直到軟管爆裂或接頭脫落,記錄爆裂時瞬間的壓力值。


                                        北京赛车计划数据
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