Nūhou ʻOihana
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Huina paipu anu
ʻO ka ʻōwili anu, ka huki anu a i ʻole ka hui ʻana o ke kaʻina hana anu no ka hana ʻana i ka pūʻolo paipu o nā hui lako. ʻO ia ka paipu welded wela a i ʻole nā ʻāpana hana hohonu. Ma muli o ka hana ʻana o ka metala, ka nui o ka paipu, nā koi maikaʻi ...Heluhelu hou aku -
ʻO ke kaʻina hana pilahi paipu kila
ʻO ka mea i kapa ʻia ʻo pickling ke hoʻohana nei i ka waika hydrofluoric a me ka waika nitric e holoi ai i ke kila kila ʻona i hana ʻia ma hope o ka mālama ʻana i ka wela. Hoʻohana ʻia i ka haku mele a me nā waiwai lākiō: HF (3-8%), HNO3 (10-15%), H2O (ke koena nui) i ka wā e hoʻomaʻamaʻa ai i ka mahana wela ma 40-60 °C. Paipu kila kiʻi...Heluhelu hou aku -
Paipu auwai
ʻO ka paipu hoʻoheheʻe wai e pili ana i ka hōʻiliʻili ʻana a me ka hoʻokuʻu ʻia ʻana o ka ʻōpala, ka wai ʻino a me ka ʻōnaehana hoʻoheheʻe wai paipu wai a me nā mea pili. Me ka paipu maloʻo, ka paipu lālā a me ka paipu e alakaʻi ana i nā mea kanu lapaʻau, ʻAʻohe o ka pipeline ma ke alanui a i ʻole ma nā wahi ʻē aʻe, ke pāʻani lākou ...Heluhelu hou aku -
ʻO ke ʻano o ka paipu kila i hoʻohana ʻia no ka lawe ʻana i ka aila
ʻO ka hanaʻana, ka laweʻana a me ka mālamaʻana i kaʻaila he mea paʻakikī loa me ke kiʻekiʻe a me ka corrosion. Loaʻa i ka ʻaila ma lalo o ka lepo nā mea e like me ka sulfur a me ka hydrogen sulfide e hiki ke hoʻohemo i ka pipeline. He pilikia nui kēia i ka wā e lawe ai i ka aila. No laila, ʻo ka mea ...Heluhelu hou aku -
He aha ka ʻokoʻa ma waena o ka hoʻokolokolo paipu x-ray
ʻO ka hoʻohana ʻana i nā ʻano hoʻāʻo kani ultrasonic e ʻike i ka mea kani i kapa ʻia ʻo ka ultrasonic flaw detector. ʻO kāna kumu: ʻike ʻia ka hoʻolaha ʻana o ka hawewe kani ultrasonic, nā waiwai acoustic o ka mea a me ka hoʻololi ʻana o ka hui kūloko i kekahi hopena i ka hoʻolaha ʻana o ka ul...Heluhelu hou aku -
ʻO ka uhi zinc
ʻO Zinc kahi kaʻina hana hoʻoheheʻe metallurgical. Mai ka hiʻohiʻona microscopic, ʻo ke kaʻina hana o ka hot dip galvanizing he ʻelua koena ikaika, ke kaulike wela a me ke kaulike hao hao zinc. Ke hoʻokomo ʻia ka mea hana kila ma kahi o 450 ℃ hoʻoheheʻe ʻia ka wai zinc, hoʻoheheʻe ʻia ka wai zinc absorption i loko o ka lumi.Heluhelu hou aku
