無(wú)縫異型鋼管的生產(chǎn)是非常嚴(yán)格的，因一點(diǎn)差異就會(huì)導(dǎo)致其成品報(bào)廢，異型鋼管是以精密冷拔無(wú)縫鋼管經(jīng)黑色或灰色磷化工藝處理，并對(duì)磷化后的鋼管進(jìn)行封閉及防銹處理而做成的精密液壓無(wú)縫鋼管。無(wú)縫異型鋼管內(nèi)外表層形成致密的磷化層，再經(jīng)防銹處理后有效防止鋼管氧化，所以鋼管的防銹性能很好，同時(shí)由于鋼管表層磷化后形成的微孔磷化膜(層)，可以強(qiáng)有力將油漆附著在鋼管表層，有效防止油漆脫落的現(xiàn)象，對(duì)于用于野外作業(yè)的環(huán)境中是理想的產(chǎn)品。
The production of seamless special-shaped steel pipe is very strict, because a little difference will lead to the scrap of its products. The special-shaped steel pipe is a precise hydraulic seamless steel pipe made by precise cold-drawn seamless steel pipe treated by black or grey phosphating process, and the phosphated steel pipe is sealed and rust-proof. The inner and outer surface of seamless special-shaped steel pipe forms a dense phosphating layer, which can effectively prevent the oxidation of the steel pipe after anti-rust treatment, so the anti-rust performance of the steel pipe is very good. At the same time, the micro-porous phosphating film (layer) formed after phosphating on the surface of the steel pipe can strongly attach the paint to the surface of the steel pipe and effectively prevent the phenomenon of paint falling off. It is an ideal product for field operation environment. 使用無(wú)縫異型鋼管時(shí)建議用戶在鋼管彎曲完成后做擦洗，例如用海綿運(yùn)用壓縮空氣進(jìn)行經(jīng)過式擦洗的辦法，當(dāng)然液壓系統(tǒng)正常工作前的系統(tǒng)預(yù)擦洗也是必須的步驟。
When using seamless special-shaped steel pipe, the user is advised to do scrubbing after the bending of the steel pipe is completed, such as using sponge to use compressed air to carry out through scrubbing, of course, the pre-scrubbing of the system before the normal operation of the hydraulic system is also a necessary step.
液壓系統(tǒng)中使用的鋼管主要是異型鋼管和平常無(wú)縫鋼管，無(wú)縫異型鋼管盡管有著優(yōu)良的機(jī)械性能，但由于價(jià)格高價(jià)位，精度低，未能獲得廣泛使用。而平常無(wú)縫鋼管盡管使用廣泛，但其機(jī)械性能較差，精度比較低，使用之前通常要經(jīng)過一系列的焊接、試裝、酸洗、堿洗、水洗、長(zhǎng)期串油、試漏，工序繁雜、費(fèi)時(shí)、費(fèi)材不可靠，且一直未能徹底清除管內(nèi)殘余物，成為整個(gè)液壓系統(tǒng)隨時(shí)發(fā)生故障的一大憂患。椐統(tǒng)計(jì)，液壓系統(tǒng)中有70%的故障就是這一原因造成的。
The steel pipes used in hydraulic system are mainly special-shaped steel pipes and ordinary seamless steel pipes. Although seamless special-shaped steel pipes have excellent mechanical properties, they have not been widely used because of their high price and low precision. Although seamless steel pipe is widely used, its mechanical properties are poor and its accuracy is relatively low. Before its use, it usually passes through a series of welding, trial-fitting, pickling, alkali washing, water washing, long-term oil string, leak testing, complicated procedures, time-consuming, unreliable materials, and has not been able to thoroughly remove the residues in the pipe, which has become a major trouble for the whole hydraulic system to break down at any time. Statistics show that 70% of the faults in hydraulic system are caused by this reason.
