Ɛdefa onwini a ɛma . Decorative stainless steel pipes Wɔ production nhyehyɛe no mu no, mfiridwuma ho ahwehwɛde ahorow a wɔde di dwuma wɔ ha no yɛ kɛse yiye. Sɛ nhwɛso no, sɛ ɔhyew a wɔhwɛ so no nyɛ papa, na ɛde 316 ɔhyew nhyɛso ne nhyehyɛe mu nhyɛso ba a, dade paipu no betumi apaapae anaasɛ asɛe. Deɛ ɛdi hɔ, Hangao Tech (Seko Machinery) de nimdeɛ a ɛfa sɛnea wɔyɛ dade a ɛnyɛ den a wɔde yɛ nneɛma a wɔde yɛ nwini ho no bɛba mu kɔ akyiri:
Esiane sɛ wɔsan kyekyɛ emu nhyɛso bere a wɔreyɛ ho adwuma no nti, dade a ɛnyɛ den a wɔde siesie no no bɛyɛ nea asɛe, na wontumi nhyɛ bɔ sɛ wɔbɛyɛ nneɛma no pɛpɛɛpɛ. Nea ɛka ho no, afã akɛse a wɔde di dwuma no taa yɛ nea ɛyɛ adwennwen a aka. Ɛsɛ sɛ saa dade a ɛnyɛ den a wɔde siesie nsu mu yi nyinaa gyae adwennwen a ɛma ɛyɛ mmerɛw bere a wɔayɛ no basabasa awie no. Mpɛn pii no, sɛ woyi nhyɛso a ɛwɔ mu no fi hɔ a, ɛyɛ nea wɔde siesie dade a ɛnyɛ den no. Wɔ 500-550°C mu no, na wɔde di dwuma kan wɔ dan mu hyew mu simma 50 kosi 100, nnɔnhwerew 3 kosi 5 anaa nea ɛboro saa (egyina fononoo dodow a wɔde ahyɛ mu no so) na ama wɔatumi akura emu nhyɛso mu bere tenten. Wɔfrɛ no abɔde mu onyin, nanso saa kwan yi ware dodo na mpɛn pii no wɔmfa nni dwuma.
Sɛ wɔde dade a ɛnyɛ den a wɔde siesie hɔ no yɛ nwini a, mpɛn pii no, ne soro ne afã horow bi a ɛyɛ tratraa no ma ɔdan fitaa a ɛyɛ den, na ɛyɛ mmerɛw. Enti, ɛsɛ sɛ wɔma dade a ɛnyɛ den a wɔde siesie nsu mu a ɛyɛ mmerɛw no yɛ nea ɛyɛ mmerɛw anaasɛ ɛyɛ nea wɔahyɛ da ayɛ na ama wɔayi casting sintɔ ahorow afi hɔ. Annealing anaa normalization temperature no titiriw yɛ 850 ne 950°C ntam. Ɔhyew no kɔ so nnɔnhwerew 1-2, cementite yɛ synthesized wɔ graphite ne austenite (afã a edi kan wɔ graphitization). Yɛn Online continuous bright annealing fononoo betumi aboa wo. Ɛnhia preheating, ebetumi adu ideal annealing temperature wɔ sikɔne 10 akyi bere a woafi ase no.
Bio nso, ɛne PLC nhyehyɛe no wɔ abusuabɔ, wubetumi ahu bere ankasa mu nsɛm, bere ankasa mu a wɔhwɛ mframa nhyɛso, nsu a ɛsen, ɔhyew a ɛkɔ so, ahoɔhare. Wɔ fononoo no a ɛyɛ nwini a edi hɔ no mu no, wɔbɛyɛ secondary cementite ne eutectoid cementite wɔ graphite mu (kyerɛ sɛ, graphitization no fã a ɛto so abien). Awiei koraa no, wɔde perlite ka ferrite anaa ferrite matrix no ho na ama casting no ayɛ den na ayɛ den. Bio nso, cementing nhyehyɛe no yɛ 850-950°C, nanso cementite a ɛwɔ standardization nhyehyɛe no mu, a ebetumi atew onwini bere a ɛyɛ den a ɛwɔ dade a ɛnyɛ den a wɔde siesie no mu no nso betumi anya ahoɔden ne denyɛ bi a ɛwɔ pearlite matrix no mu abom.
