Nsonsonoe a ɛda Cold Rolling ne Hot Rolling ntam wɔ Processing Techniques mu

Hot rolling ne cold rolling a nickel-based alloys yɛ abien a ɛho hia rolling akwan, abien no nyinaa som wɔn plastic dwumadie. Ɛsono wɔn kɛse wɔ ɔkwan a wɔfa so yɛ ne nneɛma a wɔyɛ no su mu, na wɔn dwumadi ahorow no bom.

 

Wɔyɛ ɔhyew rolling boro recrystallization ɔhyew (1000-1200℃). Sɛ wɔde cast billets anaa forged billets di dwuma sɛ raw materials a, ɛfa akwan horow te sɛ homogenizing annealing, heating, multi-pass rolling (a pass biako so tew 10%-30% ne ahoɔhare 1-5 m/s), ntɛmntɛm cooling, ne descaling. N’atirimpɔw ne sɛ ebeyi sintɔ ahorow a ɛwɔ casting mu no afi hɔ, asiesie aburow no, na wabobɔw billets no ayɛ no nneɛma a ɛyɛ den (>=3mm) te sɛ medium ne heavy plates ne strip billets. Ɛwɔ mfaso horow a ɛma wotumi deformation akɛse tumi yɛ adwuma na ɛma mfiri a ɛwɔ aduru no mu no tu mpɔn. Nanso, ɛwɔ soro a ɛnyɛ papa ne ne nsusuwii a ɛyɛ pɛpɛɛpɛ (a ɛwɔ abodwokyɛre ±0.5mm) na ɛho ka sua, na ɛma ɛfata ma tebea horow te sɛ nuklea ahoɔden adwumayɛbea steam generators a ɛwɔ afasu a ɛyɛ den tube billets.

 

Wɔyɛ awɔw mu rolling wɔ recrystallization ɔhyew ase (dan mu hyew - 200℃). Sɛ wɔde hot-rolled strips anaa thin plates di dwuma sɛ billets, wɔ surface treatment akyi no, ɛyɛ multi-pass rolling (a pass biako so tew 5%-20%, a ɛhwehwɛ sɛ wɔde intermediate annealings pii ba na ama plasticity asan aba), na ɛno akyi no, wɔde wie rolling, straightening, ne ɔhyew a etwa to a ebetumi aba. Ne botae ne sɛ ɛbɛtew ne kɛse so, ama nsusuwii mu pɛpɛɛpɛyɛ atu mpɔn (a ɛwɔ abodwokyɛre a ɛkɔ ±0.005mm) ne soro su, na ama ahoɔden ayɛ kɛse denam adwuma a ɛyɛ den so. Ɛtumi yɛ mprɛte a ɛyɛ tratraa ne ultra-thin strips ( Ɛnsua anaasɛ ɛne 3mm yɛ pɛ). Ɛnam sɛ ɛho ka yɛ den nti, ɛfata ma nneɛma a ɛyɛ pɛpɛɛpɛ te sɛ aero-engines gaskets a ɛyɛ hyew a ɛkorɔn-.