Menene bututun ƙarfe na ERW? Babban bambanci tsakanin bututun karfe na ERW (Electric Resistance Welding, wanda aka rage a matsayin ERW) da bututun karfe maras sumul shi ne cewa ERW yana da kabu mai walda, wanda kuma shine mabudin ingancin bututun karfe na ERW. Fasaha da kayan aikin samar da bututun ƙarfe na ERW na zamani, saboda ƙasashen duniya Musamman tare da ƙoƙarin Amurka da sauran ƙasashe cikin shekaru da yawa, an magance rashin daidaituwar bututun ƙarfe na ERW cikin gamsarwa. Wasu mutane suna rarraba rashin daidaituwa na bututun ƙarfe na ERW zuwa rashin daidaituwa na geometric da rashin daidaituwa ta jiki. Rashin daidaituwa na Geometric yana nufin share bututun ƙarfe na ERW. Burs na ciki da na waje. Saboda ci gaba da haɓakawa da haɓaka tsarin tsarin cirewar burr na ciki da kayan aikin yankan, an fi sarrafa burbushin ciki na manyan bututun ƙarfe da matsakaicin diamita. Ana iya sarrafa burrs na ciki a kusa da -0.2mm ~ + O.5mm kuma suna da kyauta ta jiki. Seamization yana nufin bambanci tsakanin tsarin metallographic a cikin walda da karfen tushe, wanda ke haifar da raguwa a cikin kayan aikin injiniya na yankin walda. Ana buƙatar ɗaukar matakan da za a mai da shi daidai da daidaito. A high-mita waldi thermal tsari na ERW karfe bututu yana sa bututu zuwa blank The zafin jiki rarraba gradient kusa da gefen Forms wani narkakkar yankin, wani Semi-narke yankin, wani superheated tsarin, wani normalizing zone, wani m al'ada yankin, wani tempering zone. , sauran wuraren halaye. Daga cikin su, tsarin yankin superheated shine austenite saboda zafin walda sama da 1000 ° C. Hatsi na girma da sauri, kuma za a samar da wani lokaci mai ƙarfi da karko a ƙarƙashin yanayin sanyaya. Bugu da kari, kasancewar yanayin zafin jiki zai haifar da damuwa walda. Wannan yana haifar da halin da ake ciki inda kayan aikin injiniya na yankin weld ya kasance ƙasa da na kayan tushe kuma an sami rashin daidaituwa ta jiki. Ta hanyar tsarin kula da zafi na gida na al'ada na weld din, wato, yin amfani da na'urar dumama matsakaita mitar induction don dumama yankin kabu zuwa AC3 (927 ° C), sannan aiwatar da tsarin sanyaya iska tare da tsawon 60m. da gudun 20m/min, sannan sanyaya ruwa idan ya cancanta. Yin amfani da wannan hanya zai iya cimma don kawar da damuwa, laushi da kuma tsaftace tsarin, da kuma inganta ingantaccen kayan aikin injiniya na yankin waldawar zafi mai zafi, a halin yanzu, sassan ERW na duniya na ci gaba sun karbi wannan hanya don sarrafa walda, kuma sun cimma nasara. sakamako mai kyau. High quality-ERW karfe bututu ne ba kawai The weld dinka cewa ba za a iya gane, da weld kabu coefficient ya kai 1, cimma daidaito tsakanin weld yankin tsarin da tushe abu. ERW karfe bututu suna da fa'idar yin amfani da zafi-birgima coils a matsayin albarkatun kasa, da kuma kauri bango za a iya daidaita daidai da ± 0.2mm. Ƙarfe biyu na bututun ƙarfe Dangane da ma'auni na APl na Amurka ko ma'aunin GB/T9711.1, yana da fa'idodin beveling na ƙarshe da isar da tsayayyen tsayi. A cikin 'yan shekarun nan, ayyuka daban-daban na hanyoyin sadarwar bututun iskar gas da kamfanonin iskar gas sun karɓi bututun ƙarfe na ERW a matsayin babban bututun ƙarfe a hanyoyin sadarwar bututun na birane.