Ana aiwatar da tsarin waldawa na bututun ƙarfe mai ƙarfi mai ƙarfi (erw) a ƙarƙashin yanayin saurin dumama da ƙimar sanyaya.Canjin zafin jiki mai sauri yana haifar da ɗan damuwa na walda, kuma tsarin walda shima yana canzawa.Tsarin a cikin yankin cibiyar walda tare da walda shine Low-carbon martensite da ƙananan yanki na ferrite kyauta;yankin miƙa mulki ya ƙunshi ferrite da granular pearlite;kuma tsarin iyaye shine ferrite da pearlite.Sabili da haka, aikin bututun ƙarfe yana faruwa ne saboda bambance-bambancen tsakanin microstructure na metallographic na weld da jikin mahaifa, wanda ke haifar da haɓaka ƙarfin ƙarfin walda, yayin da ma'aunin filastik ya ragu, kuma aikin aiwatarwa ya lalace.Don canza aikin bututun ƙarfe, dole ne a yi amfani da maganin zafi don kawar da bambance-bambancen microstructure tsakanin walda da ƙananan ƙarfe na iyaye, don haka an tsabtace hatsi mai laushi, tsarin ya kasance daidai, damuwa da aka haifar a lokacin sanyi da walƙiya. an kawar da shi, kuma an tabbatar da ingancin walda da bututun ƙarfe.Kaddarorin fasaha da injiniya, da daidaitawa da buƙatun samarwa na tsarin aikin sanyi mai zuwa.

Akwai gabaɗaya nau'ikan hanyoyin magance zafi iri biyu don daidaitaccen bututun walda:

(1) Annealing: Yana da yafi don kawar da walda danniya jihar da kuma aiki hardening sabon abu da inganta weld roba na welded bututu.Zazzabi mai dumama yana ƙasa da wurin sauyawar lokaci.
(2) Normalizing (normalizing treatment): Yana da yafi don inganta inhomogeneity na inhomogeneity na inji Properties na welded bututu, sabõda haka, da inji Properties na iyaye karfe da kuma karfe a walda su yi kama, don inganta karfe microstructure. da kuma tace hatsi.Zazzabi mai zafi yana sanyaya iska a wani wuri sama da madaidaicin lokaci.

Dangane da buƙatun amfani daban-daban na daidaitattun bututun walda, ana iya raba shi zuwa jiyya mai zafi na weld da jiyya mai zafi gabaɗaya.

1. Weld zafi magani: shi za a iya raba online zafi magani da offline zafi magani

Maganin zafi mai walƙiya: Bayan an haɗa bututun ƙarfe, ana amfani da saitin matsakaicin mitar tsiri induction dumama na'urorin don maganin zafi tare da axial direction na weld din, kuma diamita yana da girman kai tsaye bayan sanyaya iska da sanyaya ruwa.Wannan hanya kawai heats yankin walda, ba ya unsa karfe tube matrix, da nufin inganta weld tsarin da kuma kawar da walda danniya, ba tare da bukatar gyara dumama tanderu.An ɗora kabu ɗin walda a ƙarƙashin firikwensin rectangular.An sanye na'urar tare da na'urar ganowa ta atomatik don na'urar auna zafin jiki.Lokacin da aka karkatar da ɗinkin walda, zai iya tsakiya ta atomatik kuma ya yi diyya na zafin jiki.Hakanan zai iya amfani da zafin walda don adana makamashi.Babban hasara shine yankin dumama.Bambancin zafin jiki tare da yankin da ba mai zafi ba zai iya haifar da damuwa mai mahimmanci, kuma layin aiki yana da tsawo.

2. Gabaɗaya maganin zafi: ana iya raba shi zuwa maganin zafi na kan layi da maganin zafi na layi

1) Maganin zafi akan layi:

Bayan an narkar da bututun ƙarfe, yi amfani da na'urori masu dumama na'ura biyu ko fiye na tsaka-tsakin mitar zoben induction don dumama bututun duka, zafi da shi zuwa yanayin da ake buƙata don daidaitawa cikin ɗan gajeren lokaci na 900-920 ° C, ajiye shi na ɗan lokaci. na lokaci, sa'an nan kuma sanyaya shi zuwa kasa da 400 ° C.Al'ada sanyaya, don haka da cewa dukan tube kungiyar da aka inganta.

2) Maganin zafi a cikin tanderun da ba a kan layi ba:

Gabaɗayan na'urar maganin zafi don bututun welded sun haɗa da murhun ɗaki da tanderun murhu.Nitrogen ko hydrogen-nitrogen gauraye gas ana amfani dashi azaman yanayi mai karewa don samun iskar oxygen ko yanayi mai haske.Saboda ƙarancin samar da ingantattun murhun ɗaki, nau'in abin na'ura mai na'ura mai ci gaba da sarrafa zafi ana amfani da shi a halin yanzu.Abubuwan da ke tattare da maganin zafi na gabaɗaya sune: a lokacin tsarin jiyya, babu wani bambancin zafin jiki a cikin bangon bututu, ba za a haifar da damuwa na saura ba, za'a iya daidaita lokacin dumama da riƙewa don daidaitawa zuwa ƙarin ƙayyadaddun hanyoyin magance zafi, kuma shi Hakanan za'a iya sarrafa shi ta atomatik ta kwamfuta, amma nau'in ƙasan abin nadi.Kayan aikin tanderun yana da rikitarwa kuma farashin aiki yana da yawa.