超高壓軟管是超高壓清洗機的重要組成部分，它是連接噴嘴和超高壓泵的重要原件。國內目前能夠生產并保證質量的超高壓軟管壓力一般小于1500bar，在該壓力以上的超高壓軟管國內尚無成功生產的案例，超高壓軟管是連接超高壓清洗機噴嘴和超高壓泵的重要元件，在清洗機上有很大的作用，這里主要說一下超高壓軟管生產需要攻克什么樣的技術難關。

Ultra high pressure hose is animportant part of the ultra high pressure cleaning machine(www.craicto.com), which is animportant part of the nozzle and the high pressure pump. The can production andensure that quality of ultra high pressure hose is generally less than 1500bar,is higher than the pressure of the ultra-high pressure hose domestic nosuccessful production case, ultra-high pressure hose is connected ultra highpressure cleaning machine nozzle and the important component of thehigh-pressure pump, have great effect on the washing machine, here are a superhigh pressure hose production need to overcome what kind of technicaldifficulties.

  (1)鋼絲增強層的問題

(1) the problem of steel wirereinforcement

  超高壓軟管需要在內襯管的外表面均勻地編織4層以上鋼絲，并要保證在使用過程中鋼絲層不堆砌并牢固地與內外層緊密粘合，國內目前對此問題還沒有比較好的解決方法。與同等級的進口軟管相比，國產軟管上編織的鋼絲剛性差，直徑大，編織均勻程度低。

Ultra high pressure hoses need, theliner outer surface evenly woven layer 4 wire above, and to ensure that in theuse of process layer of steel wire does not stack and firmly with inner andouter layer is closely bonded, domestic at present, this problem has not thebetter solution. Compared with the same grade of imported hoses, the steel wiremade of domestic hose is of poor rigidity, large diameter and low evenness.

  (2)內襯材料的問題

(2) the problem of lining materials

  在清洗作業中，需求長度在幾十米以上的超高壓軟管是很常見的。由于國產軟管的內襯材料柔韌性比較差，綜合力學性能不高，以至于不能保證長距離的內襯管管壁的均勻和致密度等的質量，所以國內生產的超高壓軟管始終不能達到要求。

In the cleaning operation, the demandfor the length of tens of meters above the ultra high pressure hose is verycommon. Due to the relatively poor domestic hose lining material flexibility,comprehensive mechanical performance is not high that cannot guarantee the longdistance within the liner tube wall of uniform and density of quality, so thedomestic production of ultra-high pressure hose always can not meet therequirements.

超高壓軟管受頻繁、劇烈的壓力沖擊會導致出現爆裂。避免在作業時，油管內會反復出現油壓的突然升高或降低的情況，從而構成對超高壓軟管頻繁的壓力沖擊，導致各部的油封損壞加劇、超高壓軟管出現起泡和破裂以及管接頭的松動滲漏現象。因此在操作時，閥桿的扳動不可過猛，一定要平緩。工程機械作業時，液壓系統因功率損耗而使油液發熱，加上外界氣溫的影響可使油溫急劇升高。油液使用溫度越高，超高壓軟管越易老化，彈性變差，強度與密封性能下降，超高壓軟管就會很快爆裂。因此，在作業中，當液壓系統出現溫升過高、過快時，應及時查明原因，予以排除；清洗機夏天作業，特別是連續作業時，應采取必要的降溫措施。

Ultra high pressure hose is subject tofrequent, intense pressure impact will lead to burst. Avoid in operation, thetubing will repeatedly oil pressure suddenly increased or decreased, whichformed the super high-pressure hose frequent shock, leading to the seal damageintensifies, ultra high pressure hose foaming and rupture and pipe joints looseleakage phenomenon. Therefore, in operation, the valve stem can not be toohard, must be gentle. Engineering machinery, hydraulic system power loss due tothe heating oil, and on the outside temperature effect can make a sharp rise inoil temperature. The higher the temperature, the higher the temperature of thesuper high pressure hose, the more vulnerable to aging, poor flexibility,strength and sealing performance, ultra high pressure hose will soon burst.Therefore, in the operation, when the hydraulic system temperature rise toohigh, too fast, should be identified in a timely manner, to be ruled out;summer operations, especially in continuous operation, should take thenecessary cooling measures.