* Bright Annealing Nkyerɛase
Bright annealing (BA) kyerɛ sɛ wɔde dade a ɛnyɛ den no yɛ hyew wɔ fononoo a wɔato mu mu wɔ wim tebea a ɛtew mframa a ɛnyɛ adwuma ne hydrogen a ɛnyɛ den so.Bere a wɔde dade a ɛnyɛ den no ayɛ hyew ntɛmntɛm na ayɛ nwini ntɛmntɛm akyi no, ɛwɔ biribi a ɛbɔ ho ban, a enni hann biara wɔ mframa a ɛwɔ hɔ no mu.Saa ɔfa yi ko tia ntua a ɛyɛ hu.Mpɛn pii no, ade no ani yɛ torotoro na ɛhyerɛn.
* Dade Pipe a Wɔayɛ no Hyerɛn
Wɔyɛ dade paipu no ho adwuma bere a wɔayɛ no hyew a ɛhyerɛn awie no.Wɔ saa adeyɛ yi mu no, nneɛma bi ho hia yiye ma dade paipu no su.Sɛ ɔkwan a wɔfa so yɛ annealing a ɛhyerɛn no mfata a, ɛbɛma mpaapaemu aba, na ebetumi asɛe.Mpɛn pii no, paipu a ɛyɛ mmerɛw no wɔ tebea a ɛyɛ hyew a wɔayɛ no hyew mu.
* Ahosiesie ansa na wɔayɛ annealing a ɛhyerɛn
Ɛsɛ sɛ tube no ani ho tew na ahɔho nneɛma afoforo nni mu, biribiara a ɛbɛka wɔ tube no ani no bɛsɛe bere a wɔreyɛ ho adwuma no.
Enti, bere a yɛate adetɔfo no ahiade a ɛkɔ akyiri ase akyi no, sɛ adetɔfo no pɛ sɛ wɔyɛ mfiridwuma mu paipu a ɛsom bo kɛse a, mpɛn pii no yɛkamfo kyerɛ sɛ wɔmfa ahotew kwan bi ka ho ansa na wɔayɛ no hyew a ɛhyerɛn.Wɔde nsu a ɛyɛ hyew hohoro dade paipu no ho fi efĩ ne ngo nkekae ho, na afei wɔde mframa ma ɛyow ntɛmntɛm kɔ fononoo no nipadua mu de yɛ ɔhyew, na nkɛntɛnso a ɛhyerɛn no bɛyɛ papa.
* Wim tebea a ɛbɔ ho ban
Ɛsɛ sɛ mframa a wɔde yɛ annealing no yɛ nea oxygen nni mu, na ɛma ɛyɛ vacuum tebea.Mpɛn pii no, mframa a ɛbɔ ho ban no yɛ hydrogen anaa argon a ɛyɛ dry na ama ayɛ nea ɛhyerɛn kɛse.
* Annealing ɔhyew
Ɛsɛ sɛ wɔkyerɛ ɔhyew a wɔde yɛ annealing no sɛnea stainless steel grades ahorow te.Mpɛn pii no, anyɛ yiye koraa no, ɔhyew a wɔde yɛ austenitic dade no yɛ digrii 1040, na bere a wɔde hyɛ nsu mu no ho nhia.Ɔhyew a ɛkɔ soro ho hia na ama woatumi ayɛ nea ɛyɛ hyew.Ɔhyew ntɛmntɛm sɛnea wubetumi, ɔhyew a ɛyɛ brɛoo bɛma oxidation aba.
Ferritic stainless steels binom hwehwɛ sɛ ɔhyew a ɛba fam a wɔde yɛ annealing, te sɛ TP439, a wontumi hyerɛn annealed yiye, na nsu a dum no bɛma oxide nsenia.
Sɛ woyɛ annealing a ɛhyerɛn wie a, hyɛn anammɔn a etwa to a ɛne sɛ wobɛma wo kɛse na woateɛteɛ mu no mu, dade a ɛnyɛ den a wɔde yɛ afiri no ani da adi sɛ ɛyɛ hyew, na enhia sɛ wɔde aduru a wɔde ayɛ aduru a ɛhyerɛn no yɛ pickled.
* Botae ne mfaso horow a ɛwɔ annealing a ɛhyerɛn so:
1) Yi adwuma a ɛyɛ den fi hɔ na nya metallographic nhyehyɛe a ɛma abotɔyam.
2) Nya nea ɛhyerɛn, ɛnyɛ oxidizing na corrosion-resistant surface.
3) Ayaresa a ɛhyerɛn ma nea ɛrehuruhuruw no kɔ so yɛ mmerɛw, na wobetumi anya ɔfa a ɛhyerɛn a wɔmfa aduru no akyi.
Wɔtaa kyekyɛ fononoo a wɔde ano aduru a ɛhyerɛn mu abien.Baako yɛ muffle fononoo a ɛte sɛ mesh, na biako nso yɛ afiri a wɔde yɛ afiri a wɔde yɛ nneɛma a ɛwɔ intanɛt so a wɔde tube biako na ɛyɛ adwuma.Mpɛn pii no, mesh-type muffle furnace no tumi yɛ dade paipu ho adwuma pii a ɛyɛ adwuma yiye.Nanso muffle fononoo no sintɔ ahorow nso da adi.Esiane sɛ fononoo no nipadua no mu kɛse nti, ɛsɛ sɛ bere a wɔde di kan yɛ hyew no yɛ tenten yiye, enti ahoɔden a wɔde di dwuma no nso yɛ kɛse.Bio nso, esiane sɛ wɔansɔ ano yiye nti, ɛde mframa a ɛbɔ ho ban pii nso bedi dwuma, nanso nea ɛma ɛhyerɛn no nyɛ nea abotɔyam wom.The intanɛt so biako-tube kɔ so hyerɛn annealing fononoo nni atifi hɔ sintɔ ahorow no.Enti, ɛbɛyɛ nea eye ma wɔn a wɔyɛ nneɛma a wɔpɛ sɛ wɔyɛ dade paipu a ɛsom bo kɛse anaasɛ wɔpɛ sɛ wɔhyɛn dade paipu a ɛkorɔn gua so no. Hangao Tech (SEKO Machinery) nso wɔ mfonini ahorow abien a wubetumi apaw bi.Zhijin type no nsɛe ahoɔden kɛse na ɛnyɛ nea ɛmma nneɛma a atwa yɛn ho ahyia, na thermal insulation type no betumi anya hann a eye.
