Cold-Rolled Steel Plate: Mfitiaseɛ a wɔde yɛ adwuma ma rolling ne shaping .
Nneɛma a ɛyɛ nwini-dadeɛ mprɛte a wɔabobɔw no de dadeɛ mprɛte a ɛyɛ hyeɛ-a ɛyɛ nsuo a wɔabobɔw no di dwuma sɛ nneɛma a wɔde yɛ adwuma na ɛnya nkɔsoɔ a ɛso tew ne adwumayɛ mu nkɔsoɔ denam rolling passes pii so wɔ dan mu hyeɛ so (rolling temperature < recrystallization temperature, mpɛn pii no ɛfiri dan mu hyeɛ kɔsi 100℃). Ne nhyehyɛe titiriw no bi ne:
Rolling Process: Hot-rolled slabs (a ne kɛse yɛ 3-8mm) no, wɔde owiyammo a ɛyɛ nwini a wɔde twitwiw nneɛma a ɛyɛ nwini bobɔw no ma ɛyɛ 0.15-3.0mm. Wɔsesa rolling passes dodow no sɛnea target thickness (5-8 passes ho hia ma thin specifications), a reduction rate yɛ 15%-30% wɔ pass biara mu. Ɛdenam dade no plastic deformation so no, wɔyɛ aburow no yiye na ahoɔden no yɛ kɛse.
galvanized steel krataa: Aduru a wɔde yɛ anti-nkyenkyen a wɔde yɛ nneɛma foforo no ho aduru .
galvanized steel sheets fa cold-rolled steel sheets sɛ base material (accounting for more than 90%), na wɔde anti{2}}corrosion tumi a ɛnam galvanizing process no so ama no. Wɔakyekyɛ nneɛma atitiriw no mu ayɛ no hyew-dip galvanizing ne electro-Galvanizing.
Hot-DIP galvanizing: Bere a degreasing ne pickling akyi no, wɔde substrate no ahyɛ zinc a ayow mu wɔ 450{2}}460℃ma ɛyɛ composite coating a ɛyɛ zinc-iron a wɔde afra mu a ɛyɛ layer layer (5-15 μm thick) ne zinc layer a ɛho tew (total Zinc layer 50-275 5 50-275 5 no}g layer 50-275 5 50-275 5 50-275 5 50-275 550-275 5 50-275 550-275 5 50-275 5 {15 μm). Zinc layer ne substrate no yɛ metallurgically bonded, a adhesion boro 80N/cm.
Annealing treatment: Bere a awɔw abɔ no akyi no, dade mprɛte no plasticity so tew esiane adwuma a ɛyɛ den nti. Ɛsɛ sɛ ɛfa annealing a ɛkɔ so (wɔ ɔhyew a ɛyɛ 700-800℃) mu na ama asan ayɛ plastic. Wobetumi anya hardness states ahorow (te sɛ soft state, semi-hard state, ne hard state) sɛnea ahwehwɛde ahorow te.
