Chifukwa mayendedwe amapaipi ndi oyenera kunyamula mafuta, gasi, motero, mapaipi amafuta amafuta ndi petrochemical adagwiritsidwa ntchito kwambiri.Mafuta akale a petrifaction Corporation pachaka 120000000 T, omwe amagwiritsidwa ntchito kwambiri ndi mapaipi;kupanga pachaka nthunzi, malasha, dizilo matani 5000 miliyoni, amene 80% ndi zoyendera payipi;petrochemical Enterprise chipangizo, chipangizo chamadzimadzi kapena mpweya zinthu zoyendera mankhwala makamaka kudzera payipi kuti amalize.Choncho, mabizinesi petrochemical pachaka likulu kumanga ndi kupanga ndi kukonza onse ayenera kugwiritsa ntchito chitoliro ambiri zitsulo.Koma, chifukwa cha ntchito ya petrochemical industry imadziwika ndi kutentha kwambiri komanso kuthamanga kwambiri, kuyaka komanso kuphulika, chifukwa chake kugwiritsa ntchito machubu achitsulo kumafunikira okhwima kwambiri.

Kukana kolunjikakuwotcherera zitsulo chitolirochitukuko

M'zaka zaposachedwapa, pali mayiko apamwamba zitsulo chitoliro chopanda msoko m'malo mkulu mtengo chitukuko azimuth, makamaka chifukwa welded chitoliro kupanga luso nthawi zonse wopambana, kuwonetseredwa m'mbali zotsatirazi:

(1) desulfurization luso, kuti sulfure zili zitsulo yafupika, bwino kuwotcherera khalidwe la zitsulo chitoliro.

(2) ukadaulo wa vacuum degassing, kusintha chubu chopanda chitsulo choyera, kumachepetsa ma inclusions, kuwongolera bwino kwa msoko wa weld.

(3) chifukwa chowonjezera V, Ti, Nb ndi zinthu zina zapadera, zimachepetsa kufanana kwa kaboni, kulimba kwachitsulo, mphamvu ndi zinthu zina zimasinthidwa.

(4) chitukuko cha Mzere zitsulo otentha anagubuduza luso, kuchuluka dimensional molondola, kotero chitoliro kukula kupatuka kuchepetsa.

( 5) Kupititsa patsogolo njira zowunikira bwino, monga kuyesa kwa ultrasonic nondestructive, makina oyesera a hydrostatic ndi zida zina ziyenera kugwiritsidwa ntchito, kuti zitsimikizire mtundu wa chinthu chomaliza.

Molunjika kukana kuwotcherera zitsulo chitoliro ntchito petrochemical ntchito

Petrochemical mabizinesi kusankha chitoliro zitsulo chifukwa kupirira kupanikizika kwina, kawirikawiri ntchito madzimadzi ndi zitsulo chitoliro.Magetsi kukana welded chitoliro ndi madzimadzi ndi chosasokoneka zitsulo chitoliro Kusiyana, ali zodziwikiratu phindu zachuma, makamaka amasonyeza: ndalama zochepa;makina, digiri ya automation ndi yayikulu;kugwiritsira ntchito mphamvu zochepa (kutentha kwa chipinda, ndi chitoliro chachitsulo chosasunthika chotenthetsera kapena chojambula chozizira);mtengo wopanga ndi wotsika, chifukwa chubu chachitsulo chosasunthika chili pafupifupi 2/3;kupanga mosalekeza, zokolola zambiri zokolola ndi mkulu.Longitudinal welded chitoliro makampani China anayamba mu 50′s, anayamba mochedwa, ndondomeko kupanga ndi luso ndi dziko otukuka akuyerekezedwa, kuika mu kusiyana kwakukulu kwambiri.Unyinji wa ntchito luso zida kulephera, kusowa kwa njira zofunika kudziwika, komanso khalidwe osauka lamba lalifupi, yopapatiza ngati zopangira, chifukwa welded chitoliro mankhwala ndi kabowo kakang'ono, otsika kubala mphamvu, kapangidwe mankhwala ndi zachabechabe, welded. kupanga chitoliro mu 80% angagwiritsidwe ntchito ngati otsika kuthamanga madzimadzi kubweretsa malasha chitoliro cha madzi, mitundu yonse ya chitoliro chapadera otsika mlingo.Izi zida otsika kuwotcherera ndi luso mlingo, kupanga