Inqubo yokushisela yepayipi yensimbi ene-high-frequency welded (erw) yenziwa ngaphansi kwesimo sokushisa okusheshayo kanye nezinga lokupholisa eliphezulu. Ukushintsha kwezinga lokushisa okusheshayo kubangela ukucindezeleka okuthile kwe-welding, futhi ukwakheka kwe-weld nakho kuyashintsha. Isakhiwo endaweni yesikhungo sokushisela eduze kwe-weld yi-Low-carbon martensite nendawo encane ye-ferrite yamahhala; isifunda soguquko sakhiwe nge-ferrite ne-granular pearlite; futhi isakhiwo somzali siyi-ferrite ne-pearlite. Ngakho-ke, ukusebenza kwepayipi lensimbi kungenxa yomehluko phakathi kwe-metallographic microstructure ye-weld kanye nomzimba womzali, okuholela ekwandeni kwenkomba yamandla we-weld, kuyilapho inkomba ye-plasticity iyancipha, futhi ukusebenza kwenqubo kuyancipha. Ukuze ushintshe ukusebenza kwepayipi lensimbi, ukwelashwa kokushisa kufanele kusetshenziselwe ukuqeda umehluko we-microstructure phakathi kwe-weld kanye nensimbi yomzali, ukuze okusanhlamvu okuqinile kucwengisiswe, isakhiwo sifane, ukucindezeleka okukhiqizwa ngesikhathi sokwakhiwa okubandayo kanye nokushisela. iyaqedwa, futhi ikhwalithi ye-weld kanye nepayipi yensimbi iqinisekisiwe. Izakhiwo zobuchwepheshe kanye nemishini, futhi zivumelane nezidingo zokukhiqiza zenqubo yokusebenza ebandayo elandelayo.

Ngokuvamile kunezinhlobo ezimbili zezinqubo zokwelashwa kokushisa kwamapayipi ashiselwe ngokunemba:

(1) I-Anealing: Ngokuyinhloko iwukuqeda isimo sokucindezeleka kokushisela kanye nomsebenzi onzima futhi kuthuthukiswe i-weld plasticity yepayipi elishiselwe. Izinga lokushisa lokushisa lingaphansi kwephuzu lokushintsha kwesigaba.
(2) Ukujwayela (ukwelashwa okujwayelekile): Ikakhulukazi ukuthuthukisa ukungafani kwezakhiwo zemishini yepayipi elishiselwe, ukuze izakhiwo zemishini yensimbi engumzali nensimbi ekushiseleni zifane, ukuze kuthuthukiswe i-microstructure yensimbi. futhi ucwenge okusanhlamvu. Izinga lokushisa lokushisisa lipholiswa ngomoya endaweni engaphezulu kwephuzu lokushintsha kwesigaba.

Ngokwezidingo ezihlukene zokusetshenziswa kwamapayipi ashiselwe ngokunemba, angahlukaniswa abe ukwelashwa kokushisa kwe-weld kanye nokwelashwa kokushisa okuphelele.

1. Ukwelashwa kokushisa kwe-Weld: kungahlukaniswa ngokwelashwa kokushisa oku-inthanethi nokwelashwa kokushisa okungaxhunyiwe ku-inthanethi

Ukwelashwa kokushisa komthungo we-Weld: Ngemva kokuba ipayipi lensimbi selishiselwe, isethi yamathuluzi okushisa aphakathi kwama-frequency strip asetshenziswa ekwelapheni ukushisa ngakundlela ye-axial yomthungo we-weld, futhi ububanzi bulinganiswa ngokuqondile ngemva kokupholisa komoya nokupholisa amanzi. Le ndlela ishisa kuphela indawo ye-weld, ayibandakanyi i-matrix ye-tube yensimbi, futhi ihlose ukuthuthukisa isakhiwo se-weld nokuqeda ukucindezeleka kwe-welding, ngaphandle kwesidingo sokulungisa isithando somlilo. Umthungo we-welding ushisiswe ngaphansi kwenzwa engunxande. Idivayisi ifakwe idivayisi yokulandelela ezenzakalelayo yedivayisi yokulinganisa izinga lokushisa. Uma umthungo wokushisela uphambukisiwe, ungabeka phakathi nendawo ngokuzenzakalelayo futhi wenze isinxephezelo sezinga lokushisa. Ingasebenzisa nokushisa kwemfucuza yokushisela ukonga amandla. Okubi kakhulu indawo yokushisa. Umehluko wezinga lokushisa nendawo engashisi kungaholela ekucindezelekeni okubalulekile kwensalela, futhi ulayini wokusebenza umude.

2. Ukwelashwa kokushisa sekukonke: kungahlukaniswa ngokwelashwa kokushisa okuku-inthanethi nokwelashwa kokushisa okungaxhunyiwe ku-inthanethi

1) Ukwelashwa kokushisa okuku-inthanethi:

Ngemva kokuba ipayipi lensimbi selishiselwe, sebenzisa amasethi amabili noma ngaphezulu emishini yokushisa indandatho yokufaka imvamisa ephakathi nendawo ukuze ushise lonke ipayipi, ulishise liye ezingeni lokushisa elidingekayo ukuze lijwayeleke ngesikhathi esifushane esingu-900-920 °C, ligcine isikhathi esithile. isikhathi, bese uyipholisa emoyeni ibe ngaphansi kuka-400 °C. Ukupholisa okujwayelekile, ukuze yonke inhlangano ye-tube ithuthukiswe.

2) Ukwelashwa kokushisa esithandweni esivamile esingaxhunyiwe ku-inthanethi:

Idivayisi yokwelapha ukushisa iyonke yamapayipi ashiselwe ihlanganisa isithando somlilo segumbi kanye neziko le-roller. Igesi exubile ye-nitrogen noma i-hydrogen-nitrogen isetshenziswa njengendawo evikelayo ukuze kungabi bikho i-oxidation noma isimo esikhanyayo. Ngenxa yokusebenza kahle okuphansi kokukhiqizwa kwezithando zamakamelo, uhlobo lweziko lwama-roller oluqhubekayo lokwelapha ukushisa luyasetshenziswa njengamanje. Izici zokwelashwa okuphelele kokushisa yilezi: phakathi nenqubo yokwelapha, awukho umehluko wokushisa odongeni lweshubhu, akukho ukucindezeleka okusalayo okuzokhiqizwa, isikhathi sokushisa nokubamba singashintshwa ukuze sivumelane nezincazelo eziyinkimbinkimbi zokwelashwa kokushisa, futhi ingabuye ilawulwe ngokuzenzakalela yikhompyutha, kodwa uhlobo olungezansi lwerola. Impahla yesithando somlilo iyinkimbinkimbi futhi izindleko zokusebenza ziphezulu.