Emkhakheni wokumba uwoyela kanye nomthombo kawoyela, i-high-frequency electric resistance welded casing (okubizwa ngokuthi i-ERW casing) uma kuqhathaniswa ne-seamless casing ukunemba okuphezulu kwe-dimensional, ukuqina kwe-weld, anti-extrusion yokusebenza okuphezulu, kanye nezinzuzo zezindleko eziphansi. iye yasetshenziswa kabanzi emazweni angaphandle, futhi yazuza imiphumela emihle.

Izici ze-ERW casing (uma kuqhathaniswa ne-seamless casing)
Ukunemba okuphezulu kobukhulu: Ikesi le-ERW lisebenzisa inqubo yokulinganisa ngomshini ngemva kokubunjwa, ukunemba kwekesi engenamthungo kukhuphule usayizi wayo (ububanzi bangaphandle, ukujiya kodonga, ukujikeleza, njll.), kanye nokuchezuka kwayo kobubanzi obungaphandle okungadluli ku-± 0 Isilinganiso .5%. Njengoba kukhiqizwe i-Nippon Steel 6244.5 n'un ERW casing ukujiya kwecasing ukuchezuka okujwayelekile okungu-<0.10 mill okuhambisana nokuchezuka okujwayelekile kwekesi elingenamthungo kwakungu-0.41 mill.

Ukuqina okuhle kwe-weld: Inqubo yokukhiqiza i-ERW casing ingaqinisekiswa ukuthola okuqukethwe kwe-C, S kanye no-P kuphansi enhlanganweni yengxenye kanye nesisekelo sempahla yamandla aphezulu, ukuqina okuphezulu kwe-weld, ukuqina kwe-weld umkhono ongenamthungo ukuze umkhono weshubhu. .

I-Anti-extrusion izakhiwo ze-anti-knock: amandla aphezulu 30% kuya ku-40% uma kuqhathaniswa ne-API efanayo casing engenamthungo, i-ERW casing anti-extrusion, izakhiwo zokulwa nokungqongqoza (ingcindezi yangaphakathi) cishe ngo-50% ngaphezulu.

Ubuchwepheshe obuthuthukisiwe, ukulawulwa kwekhwalithi yomkhiqizo: I-ERW sleeve base control metal roll roll roll, isotropic, 100% ukuhlolwa okungabhubhisi.

Izindleko eziphansi: uma kuqhathaniswa ne-casing efanayo engenamthungo, i-ERW casing 5% kuya ku-10% izindleko eziphansi, ukusebenza kahle okuphezulu, izinga eliphezulu lemishini kanye ne-automation, ukusetshenziswa kwamandla okuphansi nokukhiqiza; Izinga lomkhiqizo we-ERW seliqedile kusuka ku-93% kuya ku-98%, kanye nezinga lomkhiqizo eliqediwe elingenamthungo lika-85% kuya ku-90%; I-ERW ihlanganisa yonke iphrojekthi yokutshalwa kwezimali ingaphansi ngo-40% kunephrojekthi ye-casing engenamthungo.

Izici zobuchwepheshe zekhasi le-ERW
(1) Ukukhethwa kwezinto ezingavuthiwe kulawulwa ikhoyili eginqikayo, ukulawulwa okuqinile kokuqukethwe kwe-S no-P, nokulingana kwekhabhoni, ngokuvamile u-W (S) ≤ 0.015%, okulingana nekhabhoni ≤ O. 25%. Futhi ukusetshenziswa kwe-micro-alloying element efana ne-Nb, V, Ti, ne-cu kuthuthukisa ukuqina kwensimbi ukuze kuthuthukiswe ukushisela nokumelana nokugqwala.

(2) Ikhoyili ewugqinsi ngemva kokwelashwa kokugaya, inganciphisa ama-burrs okushisela okubangelwa ukushisa okweqile kwendawo kanye ne-oxidation.

(3) I-spiral looper esetshenziswa kakhulu ekukhiqizeni okuqhubekayo, akukho ukukhiqizwa kwenqwaba ye-roll-to-volume okubangelwa ukuma kwe-welding, okuholela ekuqaliseni kabusha ukushisela, ukushisela okwamanje, ukungazinzi kwamandla kagesi ngenxa yokukhubazeka kwekhwalithi yomkhiqizo.

(4) Okuvame ukusetshenziswa ekususweni kwe-hydraulic yesimanje yenqubo ye-burrs, i-casing yangaphakathi yokulawula ukuphakama kwe-burr 1.14 NLNL.

(5) Imingcele ye-welding eqinile, okuhlanganisa amandla okufaka, i-angle yokushisela emise okwe-V, isivinini sokushisela, ukulawula izinga lokushisa lokushisela. Izinga lokushisa lokushisela ngesivinini se-high-frequency welding yokulawula amandla e-loop evaliwe, elawula ukushintshashintsha okungaphansi kuka-± 5 ℃.

(6) Ukugcizelela ekwelashweni kokushisa kwe-post-weld, ngokusebenzisa ukwelashwa kokushisa kwe-post-weld ukuthuthukisa inhlangano kanye nokucindezeleka kwangaphakathi kwendawo ye-weld.

(7) Ukwenziwa kwamandla aphezulu kanye neyunithi yokulinganisa, ukunciphisa ukunemba okukhulu okuqediwe.

(8) I-weld nensimbi njengokuhlola okuphelele noma okungaxhunyiwe ku-inthanethi okungabhubhisi, ukutholwa okufika ngesikhathi nokunembile kweziphambeko, ukuze kulungiswe ngesikhathi inqubo yokukhiqiza ukuze kuqinisekiswe ikhwalithi yomkhiqizo.