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                                        液壓軟管總成的幾種試驗方法

                                        2015-05-21 0

                                        液壓軟管總成的試驗方法

                                        1、耐壓試驗

                                        軟管總成以1.5倍的工作壓力進行靜壓試驗,至少保壓60s,不得有泄露和破裂等異常現象

                                        2、爆破試驗

                                        將一根裝好接頭不超過30天且未經使用的軟管總成,勻速升壓做靜壓爆破試驗,在規定最小爆破壓力下不得出現泄漏和破裂現象

                                        注:本實驗為破壞性試驗,試驗后試件報廢。

                                        3、泄漏試驗

                                        (1)取一根裝好接頭不超過30天且未經使用的軟管總成,在規定最小爆破壓力的70%時,保壓5~5.5min。

                                        (2)減少壓力到0.

                                        (3)重復用最小爆破壓力的70%,在保壓5~5.5mim。

                                        (4)在保壓過程中接頭處不得有泄漏或其他異常現象。

                                        注:本實驗為破壞性試驗,試驗后試件報廢。

                                        4、低溫彎曲試驗

                                        (1)取一根軟管總成,平直地在-40±3℃溫度下放置24h。

                                        (2)在40℃溫度下,將被試件放在直徑為軟管的最小彎曲半徑的2倍的芯軸上于5~12s的時間內勻速地彎曲一次。

                                        (3)軟管公稱內徑小于或等于22mm時在芯軸上彎曲180°,內徑在大于22mm時在芯軸上彎曲90°。

                                        (4)彎曲后將試件恢復至室溫,目測表面不應有龜裂,并按規定進行耐壓試驗,此時不應有表面龜裂或滲漏。

                                        注:本實驗為破壞性試驗,試驗后試件報廢。

                                        北京赛车计划数据
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