Kore i oti te whakahiatotanga o nga whakarewatanga whakarewa
Whakamaramatanga:
Ko te annealing kore i oti he atukanga maimoatanga wera mo te whakarewa maitai, ka uru ki te whakamahana i te maitai ki te awhe pāmahana i waenga i te Ac1 me te Ac3 (mo te maitai hypoeutectoid) ranei Ac1 me te Accm (mo te maitai hypereutectoid), te whakamatao i te tere whakamahana iti iho i te 50 ℃/h i muri i te pupuri kia heke te pāmahana. i raro iho i te 500 ℃ katahi ka tangohia mai i te oumu hei whakamahana hau. Ko te whainga o tenei tukanga ki te whiwhi hanganga tata ki te ahua taurite.
Nga ahuatanga Austenitization:
I te mea ko te pāmahana whakawera kei roto i te rohe e rua-waahanga, kaore i tino hurihia te hanganga o te maitai ki te austenite. Ko te wahanga pearlite anake ka huri i te waahanga me te whakamaaramatanga, ka huri ki te austenite, ko te ahua me te tohatoha o te ferrite proeutectoid me te cimentite kare tonu e rereke.
Taupānga:
Ka whakamahia te nuinga o te annealing hei tikanga whakamaoritanga i mua i te tineia o te maitai hypereutectoid, a he mea onge te tono ki roto i te maitai hypoeutectoid.
Ko te whakahiatotanga o nga whakarewanga whakarewa
Whakamaramatanga:
Spheroidizing annealing he tukanga maimoatanga wera motuhake e whai ana ki te hanga carbide i roto i te maitai hanga matūriki porohita, reira whiwhi hanganga pearlite kirikiri. Ko te mea pono, he momo whakapouri kore.
Taupānga:
Kei te nuinga whakamahia tenei tukanga mo te maitai eutectoid, hypereutectoid maitai mewhakarewa taputapu maitai whakarewa, e whai ana ki te whakaiti i te pakeke o te rauemi, te whakapai ake i te mahi tapahi, te whakarite i te hanganga rite, te arotau i te mahi maimoatanga wera, me te whakatakoto i te turanga whakahaere pai mo te tukanga tinei ka whai ake.
Nga taipitopito tukanga:
Me tika te whakahaere i te pāmahana whakawera, te tikanga he paku teitei ake i te pāmahana Ac1 ma te 20 ki te 30 °C, ka whakamahia te tikanga whakamahana oumu.
Ko te wa pupuri kia kaua e roa rawa, ka mau tonu i waenga i te 2 ki te 4 haora.
He maha nga tikanga whakamahana, engari he tikanga noa te whakamatao i te oumu, te whakamaarama waaariki mo te wa roa i te 20 °C i raro i te Ar1.
Ko te mea nui ki te whakahiato i te spheroidizing ko te whakarite kia mau tonu te maha o nga tohu carbide kaore i memeha ki roto i te austenite, ka puta he koretake te tohatoha o te kukū waro hei whakatairanga i te spheroidization o nga carbide.
Ko te whakamahana i te teitei o te pāmahana, te pupuri ranei mo te roa rawa ka memeha te nui o nga carbide, te hanga austenite rite, ka whakaheke i te matua o te spheroidization me te pa ki te hua o te spheroidization.
Ko te ahua me te rahi o nga matūriki cimentite ka pangia e te tere whakamatao, te pāmahana hauwaro ranei. Ko te whakamahana tere me te iti o te mahana hauwaro ka hangai he carbide mokemoke, ka piki ake te pakeke.
Ko nga tukanga annealing spheroidizing e whakamahia ana:
Ko te whakahiato i te porohita kotahi:
whakawera ki te 20-30 ℃ i runga ake i te Ac1, ka āta whakamahana ki raro i te 600 ℃ i muri i te whakamahana, ka mutu te whakamahana hau i te oumu.
Te whakawhanaunga i te hauaariki:
whakawera ki te 20-30 ℃ i runga ake i te Ac1, ka tere te whakamahana ki te 20 ℃ i raro i te Ar1 i muri i te whakamahana, ka whakamatao ki raro i te 600 ℃ me te oumu me te hau e whakamahana ana i te oumu. Ka whakamahia nuitia tenei tukanga.
Tauutuutu whakapouri annealing:
whakawera ki te pāmahana paku teitei ake i te Ac1 mo nga wa maha, whakamatao ki te pāmahana iti iho i te Ar1 i muri i te whakamahana, katahi ka whakamahana te hau tae noa ki te mahana o te rūma kia pai ake ai te hua o te spheroidizing. He pai mo nga whakarewanga rino uaua-ki-spheroidize, engari he uaua te mahi.
Te wa tuku: Hanuere-03-2025