先導(dǎo)式溢流閥 德國HAWE哈威電液換向閥
PMV42-43/G24, PMV42-44/G24, PMVP4-43/G24,
PMVP4-44/G24, PMVP5-42/G24, PMVP5-43/G24,
PMVS51-43/G24, PMVP5-44/G24, PM1-11-G24,
PM12-7-G24, PMZ1-19-G12, PMZ1-7.5-G24,
PM12-40-G12, PDMP11-43/24, PDM4GH-12,
PDM11-24, PDM22-21/22, PDMP11-12, PDMP
22-41/G24, PDMP11 2, PDMP11-42/24, PDMP11-43/G24,
PDMP22-41/G24, PDMP22-43/24, PDV-P3-43/24
軸承精度級別巨大承載力軸承,不可運用一般軸承;④替換的零件質(zhì)量有疑問,零件的配合精度等級(grade)低,會發(fā)作運轉(zhuǎn)頻率共振噪聲;⑤缸體與配流盤配對副弧面偏置,會發(fā)作副間油液走漏的過量噪聲;⑥斜軸泵新配流盤與舊泵后蓋上變量(Variable)滑動弧道偏置,會構(gòu)成配流盤反面高壓口處與泵后蓋間高壓區(qū)域內(nèi)的平面走漏,發(fā)作氣損噪聲。
斜盤泵新配流盤反面與舊泵后蓋壓緊區(qū)域也會呈現(xiàn)相同的噪聲。7.氣穴噪聲泵在運轉(zhuǎn)中若其過流有些部分區(qū)域如泵出口液體的肯定壓力降低到其時溫度下的
WN1M-WG230, ,WN1D-G24, ,WN1H-G24, ,WH1R-G24, ,
WH2R-G24, ,WH1R-L24, ,WH2N-X24, ,WH1H-G24, ,
WH2H-G24, ,WH1H-G24, ,WH4N-G24, ,WH1R-X24, ,
WH1D-G24, ,WH1R-X24, ,WH2D-G24, ,WH1R-G24, ,
汽化壓力時,液體便會汽化發(fā)作很多蒸汽構(gòu)成氣泡,當(dāng)富含很多氣泡的液體流經(jīng)缸體配流窗口外側(cè)的高壓區(qū)時,高壓液體會使氣泡急劇地減小直至俄然決裂,并發(fā)作高溫。高溫使油液焚燒,生成樹脂狀物質(zhì),加快油液氧化蛻變。在氣泡決裂凝聚時,液體質(zhì)點以很高的速度填充空穴,剎那間會以很高的頻率(frequency)沖擊金屬外表,發(fā)作很大的沖擊應(yīng)力,可;蠶食;金屬外表,像雕琢家用(Household)錘子或鑿子雕琢石頭相同。當(dāng)這種液壓沖擊發(fā)作在配流盤金屬
先導(dǎo)式溢流閥 德國HAWE哈威電液換向閥