[恒溫恒濕試驗箱]恒溫恒濕試驗箱試驗后的恢復與檢測步驟
[恒溫恒濕試驗箱]分析(xi)恒溫(wen)恒濕試(shi)驗(yan)箱試(shi)驗(yan)后的恢復與檢測步驟
恒(heng)(heng)溫恒(heng)(heng)濕試驗箱試驗后恢(hui)復(fu)
正(zheng)常(chang)恒溫(wen)(wen)(wen)(wen)恒溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)驗(yan)結束后(hou)(hou)(hou)和最終通電(dian)檢測(ce)前,對(dui)(dui)(dui)試(shi)(shi)(shi)件(jian)的(de)處理(li),都稱之為試(shi)(shi)(shi)后(hou)(hou)(hou)恢(hui)(hui)復。試(shi)(shi)(shi)后(hou)(hou)(hou)恢(hui)(hui)復目的(de)是使試(shi)(shi)(shi)件(jian)狀態與初始(shi)檢測(ce)時一(yi)致,能如實確定環境應(ying)力(li)給試(shi)(shi)(shi)件(jian)帶來的(de)影響哪些是不可逆的(de)。恢(hui)(hui)復條件(jian)與正(zheng)常(chang)大(da)氣條件(jian)一(yi)樣。但在(zai)實際試(shi)(shi)(shi)后(hou)(hou)(hou)恢(hui)(hui)復中(zhong),這一(yi)過(guo)(guo)程往往被(bei)淡化、縮減(jian)甚至省(sheng)略。如濕熱試(shi)(shi)(shi)驗(yan)后(hou)(hou)(hou),自然(ran)恢(hui)(hui)復一(yi)小時,就認(ren)為已經恢(hui)(hui)復至正(zheng)常(chang)大(da)氣條件(jian);再如,低(di)溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)驗(yan)后(hou)(hou)(hou)跳(tiao)過(guo)(guo)試(shi)(shi)(shi)后(hou)(hou)(hou)恢(hui)(hui)復過(guo)(guo)程,直接進(jin)行(xing)高(gao)溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)驗(yan),認(ren)為這樣做省(sheng)時省(sheng)力(li),在(zai)高(gao)溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)驗(yan)中(zhong)就對(dui)(dui)(dui)試(shi)(shi)(shi)件(jian)進(jin)行(xing)了烘干(可采用高(gao)低(di)溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)驗(yan)箱進(jin)行(xing))。殊(shu)不知,這樣做已對(dui)(dui)(dui)試(shi)(shi)(shi)件(jian)產生了過(guo)(guo)應(ying)力(li),對(dui)(dui)(dui)試(shi)(shi)(shi)件(jian)的(de)組件(jian)造成(cheng)嚴重影響,給試(shi)(shi)(shi)件(jian)測(ce)試(shi)(shi)(shi)結果的(de)準確性埋下隱(yin)患。
因此,在試(shi)后(hou)恢復(fu)實(shi)施過程中,正確(que)的做(zuo)法應(ying)該是(shi):若(ruo)是(shi)濕熱(re)試(shi)驗(yan)則(ze)(ze)結束(shu),則(ze)(ze)應(ying)打開臬門(men)自(zi)然(ran)恢復(fu)(特殊(shu)要求應(ying)采(cai)(cai)取條(tiao)件(jian)(jian)(jian)恢復(fu)),時(shi)間不得(de)少于12h,否則(ze)(ze)試(shi)件(jian)(jian)(jian)會凝(ning)露積水(shui),影(ying)響(xiang)最(zui)后(hou)通電(dian)檢測;若(ruo)是(shi)低溫試(shi)驗(yan)結束(shu),一般應(ying)采(cai)(cai)取適當(dang)的恢復(fu)控制(zhi)條(tiao)件(jian)(jian)(jian),以+0.4℃~+0.8℃范圍內(nei)的速率,階梯狀變速升溫到高于室溫且低于試(shi)件(jian)(jian)(jian)高溫試(shi)驗(yan)條(tiao)件(jian)(jian)(jian)進行(xing)烘干(gan),持(chi)續時(shi)間為8~12h,試(shi)件(jian)(jian)(jian)結構(gou)越復(fu)雜、體(ti)(ti)積越大(da),時(shi)間相應(ying)的也越長。烘箱(xiang)結束(shu)后(hou),應(ying)打開箱(xiang)門(men)自(zi)然(ran)恢復(fu);對于總站或整機,應(ying)在條(tiao)件(jian)(jian)(jian)恢復(fu)結束(shu)后(hou),再正常恢復(fu)大(da)氣條(tiao)件(jian)(jian)(jian),在無(wu)具體(ti)(ti)標準規定的情況(kuang)下(xia)(xia),以試(shi)驗(yan)人員的經驗(yan),試(shi)驗(yan)后(hou)恢復(fu)處(chu)理(li)在正常大(da)氣條(tiao)件(jian)(jian)(jian)下(xia)(xia)旋轉不少于24h較好。
恒溫恒濕試(shi)(shi)驗(yan)箱試(shi)(shi)驗(yan)后檢測
試件(jian)結構方面的檢測,主要是(shi)借(jie)助于一些儀器儀表各(ge)設備工(gong)具(ju),觀(guan)察試件(jian)結構部(bu)(bu)分是(shi)否有(you)裂紋、變形,元器件(jian)、堅固件(jian)是(shi)否有(you)脫(tuo)落或松(song)動(dong)(dong),轉動(dong)(dong)和升(sheng)降部(bu)(bu)分是(shi)否卡(ka)死或活動(dong)(dong)不暢(chang),密封件(jian)是(shi)否脫(tuo)膠等(deng)(deng)等(deng)(deng)。
試件電氣部分檢測(ce),總的原則(ze)是,“化整為(wei)零、取大優先”。即整機上電,通過儀(yi)器(qi)儀(yi)表檢測(ce)試件的電氣性能,如(ru)果(guo)測(ce)試結果(guo)符合要(yao)求,即正(zheng)常,則(ze)整機或大系統優先通過檢測(ce)。否則(ze),如(ru)果(guo)整機上電出現故障,則(ze)由整機往各系統逐一排查,逐一歸零,直到(dao)找到(dao)問(wen)題(ti)所在,解決問(wen)題(ti)。
廣東(dong)劍(jian)喬試(shi)(shi)驗(yan)(yan)(yan)設(she)備有限公司是(shi)專(zhuan)注于振(zhen)動及環境試(shi)(shi)驗(yan)(yan)(yan)設(she)備研(yan)發、生(sheng)產、銷售大型生(sheng)產廠家,主營產品(pin):振(zhen)動臺(tai)、振(zhen)動試(shi)(shi)驗(yan)(yan)(yan)機、振(zhen)動試(shi)(shi)驗(yan)(yan)(yan)臺(tai)、沖(chong)擊(ji)(ji)試(shi)(shi)驗(yan)(yan)(yan)臺(tai)、沖(chong)擊(ji)(ji)試(shi)(shi)驗(yan)(yan)(yan)機、老化房、恒(heng)溫恒(heng)濕試(shi)(shi)驗(yan)(yan)(yan)室(shi)、恒(heng)溫恒(heng)濕機、快速(su)溫變試(shi)(shi)驗(yan)(yan)(yan)箱(xiang)(xiang)、高低溫試(shi)(shi)驗(yan)(yan)(yan)箱(xiang)(xiang)、冷(leng)熱沖(chong)擊(ji)(ji)試(shi)(shi)驗(yan)(yan)(yan)箱(xiang)(xiang)、冷(leng)熱沖(chong)擊(ji)(ji)箱(xiang)(xiang)、恒(heng)溫恒(heng)濕箱(xiang)(xiang)、恒(heng)溫恒(heng)濕試(shi)(shi)驗(yan)(yan)(yan)箱(xiang)(xiang)等產品(pin)。