1.Kijan ekran matyè premyè pou woule frèt?
Seleksyon materyèl anvan tout koreksyon: Chwazi klas ki apwopriye a nan cho - woule bobin asye ki baze sou final la frèt - woule kondisyon pwodwi (tankou epesè, fòs, ak materyèl). Pou egzanp, ki ba - kabòn cho - woule bobin asye yo itilize pou òdinè frèt - woule fèy asye (tankou SPCC), pandan y ap cho - woule bobin ki gen alyaj eleman tankou Manganese ak Silisyòm se pou segondè {
Enspeksyon bobin asye: se enspeksyon manyèl oswa machin fè yo tcheke cho a - sifas woule bobin a (pou siy nan echèl grav, fant, oswa mak), fòm bobin (pou etablisman, absans nan convolutions, oswa ki lach anwoulman), ak Dimansyon (epesè yo dwe nan tolerans yo nan O. Hot - epesè woule woule se 2-6mm, ak epesè a sib apre woule frèt se 0.1-3mm).
Steel bobin soude bou (si ou vle): Si longè a nan yon bobin sèl se ensifizan, miltip cho - anwoulman woule yo soude fen - nan - fen yo fòme yon billet kontinyèl. Sa a evite souvan frèt - Rolling sispann pou chanjman bobin ak amelyore efikasite pwodiksyon an.
2.Ki sa ki etap kle yo nan marinated?
PICKLING: Retire echèl soti nan bobin la.
Apre dekourajman, bobin la antre nan yon "brekè echèl" (oswa "etann ak machin nivelman"): mekanik etann ak koube kreye fant nan echèl la, fasilite ki vin apre asid pénétration ak amelyore efikasite marinated.
PICKLING TANK IMMERSMER/Flite: Baze sou epesè bobin ak epesè echèl, tan an marinatwar (anjeneral 1-5 minit), konsantrasyon asid (10% -20% pou asid idroklorik, 5% -15% pou asid silfirik), ak tanperati chanm pou asid idroklorik asid ki gen rapò ak asid (20- substrate.
Rense: Apre marinated, asid rezidyèl ak sèl sou sifas la asye mande pou flite ak dlo pwòp (oswa fèb dlo alkalin) yo anpeche wouye segondè.
3.Kijan yo retire lwil oliv ak imidite?
Si woule rezidi lwil oliv (rezidi nan refwadisman librifyan pandan woule cho) se prezan sou sifas la nan cho - woule anwoulman asye, li ta dwe retire pa netwayaj asid (lè l sèvi avèk sodyòm solisyon idroksid) anvan oswa apre marinated, ki te swiv pa yon dlo cho rense.
Sifas la plak asye, ki gen imidite apre rense, yo ta dwe seche lè l sèvi avèk siye lè cho (lè l sèvi avèk segondè - tanperati lè cho) oswa mekanik peze yo anpeche rezidyèl imidite ak rouye.
4.Kijan rkwir travay?
Si dite a nan yon cho - bobin asye woule se twò wo (egzanp, fòs rupture depase 600MPA) akòz refwadisman rapid apre woule cho, dirèk woule frèt ka lakòz fann. In this case, "annealing" is required first: the steel coil is heated to 600-800℃in a protective atmosphere (eg, nitrogen) or a vacuum environment, kept at this temperature for a period of time, and then slowly cooled to stabilize the internal grains of the steel, reduce the hardness (eg, reduce the hardness from HB 150 to below HB 100), and improve the plasticity to facilitate subsequent cold woule.
5. Èske frèt woule yon pwosesis debaz?
Si dite a nan yon cho - bobin asye woule se twò wo (egzanp, fòs rupture depase 600MPA) akòz refwadisman rapid apre woule cho, dirèk woule frèt ka lakòz fann. In this case, "annealing" is required first: the steel coil is heated to 600-800℃in a protective atmosphere (eg, nitrogen) or a vacuum environment, kept at this temperature for a period of time, and then slowly cooled to stabilize the internal grains of the steel, reduce the hardness (eg, reduce the hardness from HB 150 to below HB 100), and improve the plasticity to facilitate subsequent cold woule.