Inkqubo ye-welding ye-high-frequency welded steel pipe (erw) iqhutyelwa phantsi kweemeko zokufudumeza ngokukhawuleza kunye nesantya esiphezulu sokupholisa. Ukutshintsha kweqondo lokushisa ngokukhawuleza kubangela uxinzelelo oluthile lwe-welding, kwaye isakhiwo se-weld sitshintsha. Isakhiwo kwindawo ye-welding centre ecaleni kwe-weld yi-Low-carbon martensite kunye nommandla omncinci we-ferrite yamahhala; ummandla wenguqu uqulunqwe nge-ferrite kunye ne-granular pearlite; kunye nesakhiwo somzali yi-ferrite kunye ne-pearlite. Ngoko ke, ukusebenza kombhobho wensimbi kubangelwa umehluko phakathi kwe-metallographic microstructure ye-weld kunye nomzimba womzali, okukhokelela ekwandeni kwesalathiso samandla se-weld, ngelixa isalathisi seplastiki siyancipha, kwaye inkqubo yokusebenza iyancipha. Ukuze utshintshe ukusebenza kombhobho wentsimbi, unyango lobushushu kufuneka lusetyenziswe ukuphelisa umahluko we-microstructure phakathi kwe-weld kunye nentsimbi yomzali, ukwenzela ukuba iinkozo ezirhabaxa zicocwe, ulwakhiwo lufane, uxinzelelo oluveliswa ngexesha lokubanda kunye ne-welding. kupheliswa, kwaye umgangatho we-weld kunye nombhobho wensimbi uqinisekisiwe. Iimpawu zobuchwepheshe kunye noomatshini, kwaye ulungelelanise iimfuno zemveliso yenkqubo yokusebenza ebandayo elandelayo.

Kukho ngokubanzi iindidi ezimbini zeenkqubo zonyango lobushushu ukwenzela ukuchaneka kwemibhobho edityanisiweyo:

(1) I-Anealing: Ikakhulu kukuphelisa imeko yoxinzelelo lwe-welding kunye nomsebenzi onzima kunye nokuphucula iplastiki ye-weld yombhobho odibeneyo. Ubushushu bokufudumala bungaphantsi kwendawo yokutshintsha kwesigaba.
(2) I-normalizing (unyango oluqhelekileyo): Ikakhulu kukuphucula i-inhomogeneity yeempawu zomatshini wombhobho odibeneyo, ukuze iimpawu zomatshini zentsimbi yomzali kunye nesinyithi kwi-weld zifana, ukwenzela ukuba kuphuculwe i-microstructure yesinyithi. kwaye usulungekise iinkozo. Ubushushu bokufudumala bupholile emoyeni kwindawo engaphezulu kwendawo yokutshintsha kwesigaba.

Ngokweemfuno ezahlukeneyo zokusetyenziswa kwemibhobho echanekileyo, inokwahlulwa ibe kunyango lobushushu be-weld kunye nonyango lobushushu ngokubanzi.

1. Unyango olushushu lwe-weld: lunokwahlulwa lube kunyango lobushushu kwi-intanethi kunye nonyango lobushushu obungaxhunywanga kwi-intanethi

Unyango lobushushu bomthungo we-weld: Emva kokuba umbhobho wentsimbi udityanisiwe, iseti yezixhobo zokufudumeza zokufakelwa kwe-frequency ephakathi zisetyenziselwa unyango lobushushu ecaleni kwendlela ye-axial yomthungo we-weld, kwaye ububanzi bulingana ngokuthe ngqo emva kokupholisa umoya kunye nokupholisa amanzi. Le ndlela ifudumeza kuphela indawo ye-weld, ayibandakanyi i-matrix ye-tube yensimbi, kwaye ijolise ekuphuculeni isakhiwo se-weld kunye nokuphelisa uxinzelelo lwe-welding, ngaphandle kwemfuneko yokulungisa isithando somlilo. Umthungo we-welding ushushu phantsi kwenzwa yoxande. Isixhobo sixhotyiswe ngesixhobo sokulandelela ngokuzenzekelayo kwisixhobo sokulinganisa ubushushu. Xa umthungo we-welding uphambukisiwe, unokuzinzisa ngokuzenzekelayo kwaye wenze imbuyekezo yeqondo lokushisa. Isenokusebenzisa ubushushu benkunkuma yewelding ukonga amandla. Eyona nto ingathandekiyo yindawo yokufudumala. Umahluko weqondo lokushisa kunye nommandla ongatshisiyo unokukhokelela ekugxininiseni okushiyekileyo, kwaye umgca wokusebenza ude.

2. Unyango lobushushu lulonke: lunokwahlulwa lube kunyango lobushushu kwi-intanethi kunye nonyango lobushushu obungaxhunywanga kwi-intanethi

1) Unyango lobushushu kwi-Intanethi:

Emva kokuba umbhobho wentsimbi udityanisiwe, sebenzisa iiseti ezimbini okanye ngaphezulu zezixhobo zokufudumeza iringi yamaxesha aphakathi ukufudumeza umbhobho wonke, uwufudumeze kubushushu obufunekayo kwisiqhelo ngexesha elifutshane le-900-920 °C, uyigcine kangangexesha elithile. ixesha, kwaye emva koko-yipholise ngomoya ukuya ngaphantsi kwe-400 °C. Ukupholisa okuqhelekileyo, ukwenzela ukuba yonke intlangano yetyhubhu iphuculwe.

2) Unyango olushushu kwi-off-line normalizing eziko:

Isixhobo sokunyanga ubushushu ngokubanzi kwimibhobho edityanisiweyo ibandakanya isithando somlilo segumbi kunye neziko lokutshisa i-roller. I-nitrogen okanye i-hydrogen-nitrogen igesi exubeneyo isetyenziswa njengendawo ekhuselayo ukufezekisa i-oxidation okanye imeko eqaqambileyo. Ngenxa yokusebenza okuphantsi kwemveliso yeziko legumbi, uhlobo lweziko lwe-roller oluqhubekayo lonyango lobushushu luyasetyenziswa okwangoku. Iimpawu zonyango lonke lobushushu zezi: ngexesha lenkqubo yonyango, akukho mahluko weqondo lobushushu eludongeni lwetyhubhu, akukho xinzelelo lushiyekileyo luya kuveliswa, ukufudumeza kunye nexesha lokubamba linokuhlengahlengiswa ukuze lihambelane nemigaqo yonyango olunzima ngakumbi, kwaye inokulawulwa ngokuzenzekelayo yikhompyuter, kodwa uhlobo olusezantsi lwe-roller. Izixhobo zesithando somlilo zinzima kwaye iindleko zokusebenza ziphezulu.