服務熱線
9-15
透(tou)氣(qi)度試(shi)(shi)(shi)驗儀(yi)測試(shi)(shi)(shi)原理:將預先(xian)處理好的(de)(de)試(shi)(shi)(shi)樣(yang)放(fang)置在上(shang)(shang)下(xia)(xia)測試(shi)(shi)(shi)腔(qiang)之間(jian),夾緊(jin),先(xian)對低(di)壓(ya)腔(qiang)(下(xia)(xia)腔(qiang))進行真(zhen)空(kong)處理,然后對整個(ge)系統抽真(zhen)空(kong),當達(da)到規(gui)定的(de)(de)真(zhen)空(kong)度后,關(guan)閉測試(shi)(shi)(shi)下(xia)(xia)腔(qiang),向測試(shi)(shi)(shi)上(shang)(shang)腔(qiang)(高壓(ya)腔(qiang))充(chong)入定壓(ya)力的(de)(de)試(shi)(shi)(shi)驗氣(qi)體(ti),...
9-2
熱(re)流法導熱(re)系數儀采用雙試(shi)(shi)件(jian)(jian)測定(ding)裝置,被測試(shi)(shi)件(jian)(jian)垂直(zhi)放置在(zai)(zai)兩個相互平行(xing)具(ju)有恒定(ding)溫(wen)度的(de)平板(ban)中,在(zai)(zai)溫(wen)度穩(wen)定(ding)狀態下,試(shi)(shi)件(jian)(jian)中心計量(liang)區(qu)部(bu)分具(ju)有恒定(ding)熱(re)流,此時測量(liang)冷熱(re)板(ban)熱(re)電(dian)(dian)偶(ou)輸(shu)出的(de)熱(re)電(dian)(dian)勢和表面溫(wen)度值,就可以算(suan)出任意平...