Sau da yawa muna cewa zafi-faɗaɗɗen bututu yana nufin bututun ƙarfe tare da ƙarancin ƙarancin ƙima amma ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bututu, ya kamata a yi la'akari da bututun ƙarfe mai zafi ya zama bututun ƙarfe mai girman diamita da nakasa bayan dumama bututun ƙarfe mara nauyi. ta yin amfani da bututu na yau da kullun, kuma farashin yana da ƙasa kuma ingancin samarwa yana da yawa. Hanyar sarrafawa ce ta gama gari don bututu maras sumul. Saboda da high siga ci gaban da wutar lantarki tukunyar jirgi da kuma babban sikelin ci gaban petrochemical shuke-shuke, da bukatar manyan diamita sumul bututu kuma yana karuwa, kuma yana da wuya ga bututu mirgina raka'a don samar da sumul tube cewa diamita mafi girma fiye da 508mm, rabo daga waje diamita zuwa bango kauri (D / S)> 25, thermal fadada fasahar, musamman da m fasahar ya inganta sosai m fasahar.
Fadada bututu mai hawa biyu da ake amfani da bututun karfe mai zafi ya haɗu da fasahar faɗaɗa diamita na mazugi, fasahar dumama matsakaicin mitar dijital, da fasahar ruwa a cikin injin guda ɗaya. Tare da m tsari, m makamashi amfani, m gini zuba jari, kuma mai kyau The samfurin ingancin, fadi da kewayon albarkatun kasa da samfurin bayani dalla-dalla, sassauƙa da ƙananan shigar da samar da tsari daidaitawa sun maye gurbin gargajiya ja-type diamita fadada fasahar na karfe bututu masana'antu.
Ya kamata a lura da cewa kayan aikin injiniya na bututun ƙarfe masu zafi sun kasance mafi muni fiye da bututun ƙarfe masu zafi.
Babban tsarin fadada bututun na thermal shine a gyara bututun a kan dunƙule gubar, sanya ƙugiya mai siffar mazugi mai diamita fiye da diamita na bututu zuwa ɗayan ƙarshen bututun, sannan a haɗa tare da gyara sauran dunƙule a cikin bututun. Haɗin da ke tsakanin bututu da magudanar sama yana a ƙasan matsakaicin mitar dumama, don magance dumama cikin sauri da fashe, kuna buƙatar fara shigar da ruwa a cikin bututu, fara dumama na'urar, kuma bayan isa ga yanayin da aka ƙayyade, dunƙule wanda ke haɗa bututun yana tura bututun, don haka bututun yana motsawa zuwa saman tudu kuma ya shimfiɗa. Ƙarƙashin maƙarƙashiya na sama yana haɓaka diamita na bututu. Bayan duk bututun ya wuce, bututun ba zai kasance madaidaiciya ba saboda tsarin fadada thermal, don haka yana buƙatar daidaita shi.
Abin da ke sama shine ainihin abun ciki na fasahar fadada thermal.
Mai zuwa shine tsarin da ya dace na bututu mai faɗaɗa thermal
Fadada nauyi:
carbon karfe: (diamita-kauri)× kauri× 0.02466 = nauyit na mita daya (kg)
gami: (diamita-kauri)× kauri× 0.02483 = nauyina mita daya (kg)
yawan mita bayan zafi fadada:
asali tube Diamita÷ zafi fadada diamita× 1.04× tsayi*
asali tube mita:
tsawo tsawo× (diamita÷ diamita tube na asali÷ 1.04)
gudun:
100000÷ (asalin diamita-kauri× kauri)
kauri:
fadada kauri (lokaci 1) ) = Kauri na asali× 0.92
Fadada kauri (sau 2) = Asalin kauri na bututu * 0.84
Diamita:
Fadada diamita = Girman mold + kauri mai faɗaɗa× 2
Girman mold: faɗaɗa diamita-2 * Fadada bango Kauri
Haƙurin diamita:
Diamita＜426mm, haƙuri±2.5
Diamita 426-630mm, haƙuri±3
Diamita：630mm, haƙuri±5
Halin iyawa:
Diamita＜426mm, haƙuri±2
Diamita：426mm, haƙuri±3
Kauri:
kauri≤20mm, haƙuri﹢2 ,-1.5
kauri≤40mm ku﹢3 ,-2
Bututu don yin shigar bututu
﹢5 ,-0
Ciki da waje na karce:
Tsawon zurfafawa: 0.2mm, tsawon: 2cm, ana kiransa karce. Ba a yarda ba
Madaidaici: ≤6 mita, lankwasawa ne 5mm≤Tsawon mita 12, lankwasawa shine 8mm
Misali:
Original tube 610*19 zafi fadada 660*16
Tsawon bututu na asali: 12.84m
Fadada kauri: 19 * 0.92 = 17.48 (lokaci 1)
19*0.84=15.96(2 sau)
Fadada tsawon bututu: 610÷660*1.04*12.84=12.341962
Fadada diamita: 625+17.48*2+1=660.96(lokaci 1)
625+15.96*2+1=657.92(sau biyu)
Girman Module: 660-2*16=628
