Akwai manyan hanyoyin sarrafawa guda shida donbututu marasa sumul (SMLS):

1. Hanyar ƙirƙira: Yi amfani da injin ƙirƙira don shimfiɗa ƙarshen ko ɓangaren bututu don rage diamita na waje. Injin swage da aka fi amfani da shi sun haɗa da nau'in jujjuyawar, nau'in sanda mai haɗawa, da nau'in abin nadi.

2. Hanyar hatimi: Yi amfani da madaidaicin madauri akan na'ura mai nau'i don fadada ƙarshen bututu zuwa girman da ake buƙata da siffar da ake bukata.

3. Hanyar nadi: sanya cibiya a cikin bututu, kuma tura kewayen waje tare da abin nadi don sarrafa gefen zagaye.
4. Hanyar juyawa: Gabaɗaya, ba a buƙatar mandrel, kuma ya dace da gefen zagaye na ciki na bututu mai kauri.
5. Hanyar lankwasa: Akwai hanyoyi guda uku da ake amfani da su, wata hanya ita ce hanyar fadadawa, wata hanyar kuma ita ce hanyar stamping, hanya ta uku kuma ita ce hanyar rola. Akwai rollers 3-4, nadi kafaffen nadi biyu, da nadi daidaitacce guda ɗaya. Tare da kafaffen farar nadi, bututun da ya ƙare yana da wahala.
6. Hanyar bulging: Daya shine sanya roba a cikin bututun, kuma a yi amfani da naushi don matsa saman don sa bututun ya fito; wata hanyar ita ce bulging na hydraulic, cika tsakiyar bututu da ruwa, kuma matsa lamba na ruwa yana busa bututu zuwa siffar da ake so. Yawancin nau'i da fitarwa na bututun corrugated sune mafi kyawun hanyoyin.

Dangane da yanayin yanayin aiki daban-daban na bututun ƙarfe mara nauyi, an raba bututun ƙarfe marasa ƙarfi zuwa aikin sanyi da aiki mai zafi.

Zafafan birgima mara kyaubututun karfe: da farko zazzage billet ɗin zagaye zuwa wani zafin jiki, sannan a huɗa shi, sannan a je zuwa ci gaba da birgima ko extrusion, sannan a je wajen tsigewa da girma, sannan a kwantar da bututun billet ɗin a miƙe, sannan a ƙarshe za a aiwatar da shi. hanyoyin kamar gwaje-gwajen gano aibi, yin alama, da ajiyar kaya.

Sanyi-jawo mara kyaukarfe bututu: dumama, huda, heading, annealing, pickling, oiling, sanyi mirgina, billet tube, zafi magani, mikewa, flaw gano da sauran hanyoyin da zagaya tube billet.