5052 Aluminum Circle Hot Rolling: Yadda Ake Daidaita Kulle a cikin “Tagar Zazzabi na Zinariya”?

A fagen sarrafa aluminum, 5052 aluminum gami, tare da kyakkyawan juriya na lalata, matsakaicin ƙarfi, da tsari mai kyau, sanannen kayan tushe ne don samfuran kamar iya ƙarewa, Kayan aiki, da kuma gidaje na lantarki. Duk da haka, ingancin da'irar aluminum mai zafi mai zafi, canzawa daga ingot zuwa takardar da ke da tsari iri ɗaya da ƙwararrun kaddarorin, an ƙaddara shi sosai yayin aikin juyawa mai zafi. Daga cikin abubuwan, daidai sarrafa taga zafin mirgina mai zafishine ainihin tsarin rayuwa mai haɗa tsarin simintin simintin gyare-gyare zuwa abubuwan da ake so na ƙarshe.

Wannan labarin zai yi nazari dalla-dalla bisa tsarin azama, m aiki jeri, da wuraren sarrafawa don maɓallan maɓalli biyu a cikin zafi mai zafi na 5052 aluminum da'ira: da fara mirgina zafin jikida kuma zafin jiki na gamawa, samar muku da bayyanannen jagorar aiki.

1. Fahimtar Tushen: Me yasa Tagar Zazzabi take da Muhimmanci?

5052 na cikin jerin Al-Mg na abubuwan ƙarfafa ƙarfi da ba za a iya magance su ba. Ana samun kaddarorin sa da farko ta hanyar ƙarfafa bayani mai ƙarfi da ƙarfin aiki na gaba. Babban manufar mirgina mai zafi ba kawai ba “nakasawa” amma “nishaɗi”:

1. Rushe tsarin as-simintin: Kawar da m dendrites da rarrabuwa abun da ke ciki.
2. Ƙaddamar da cikakken recrystallization: Samun uniform, daidaitattun hatsi ta hanyar nakasawa mai zafi da recrystallization mai ƙarfi.
3. aza harsashin sarrafawa na gaba: Samar da fanko (billet) tare da filastik mai kyau da tsari mai kyau, sauƙaƙe daga baya sanyi mirgina tare da babban ragi rates ko zurfin zane.

Ƙididdigar taga zafin jiki shine daidai game da gano ma'auni mafi kyau a tsakanin “hana zafi fiye da kima” kuma “inganta recrystallization,” da tsakanin “rage juriya na lalacewa” kuma “nisantar sarrafa hatsi.”

2. Ikon Farawa: Yadda Ake Ƙayyade Zazzaɓin Fara Juyawa?

Zazzabi na farawa shine zafin ingot bayan jiyya na homogenization yayin da yake shiga farkon mirginawa.. Yana ƙayyade ko mirgina mai zafi zai iya farawa lafiya da ingancin tsarin farko.

Babban Tushen don Ƙaddamarwa:

• Matsalolin Tsari na Mataki: Layin solidus na 5052 yana da kusan 607 ° C. Dole ne a kiyaye shi da kyau a ƙasa da wannan zafin jiki don hana zafi. Hakanan yana buƙatar guje wa kewayon narkewar ƙananan matakan eutectic (e.g., Al₃Mg₂).
• Bukatar Homogenization: The ingot dole ne a farko zama cikakken homogenized a 500-540 ° C don narkar da mai narkewa matakai da kuma cimma abun da ke ciki uniformity.. Zazzabi na farawa ya kamata ya haɗa da wannan, tabbatar da tasirin homogenization ba a rasa ba saboda sanyaya.

Kafin Magani: Ma'auni na Tsarin Haɗuwa

Homogenization wani ba makawa ne kafin magani tsari kafin zafi mirgina. Siffofin sa kai tsaye suna shafar yuwuwar fara mirgina da ingancin tsarin farko.

Tebur 1: Ma'auni na Tsarin Haɗuwa da Magana don 5052 Aluminum Alloy Ingot

Shawarar Taga da Abubuwan Ayyuka:

• Yanayin Zazzabi: 500-540°C. Yawancin lokaci, 510-530Can fi so.
• Gyaran yanayi:
  • Samfuran ma'auni na bakin ciki (≤3mm): Za a iya amfani da ƙananan iyaka (~500°C), mai amfani don samun mafi kyawun hatsi don yin ingantattun mashin ɗin na gaba.
  • Samfuran ma'auni mai kauri (>3mm): Za a iya amfani da matsakaici-zuwa babba iyaka (520-540°C), Yin amfani da mafi girman filastik don rage juriya na lalacewa a farkon wucewar.
• Maɓalli Control:
  1. Dole ne dumama ya zama uniform; bambance-bambancen yanayin zafin ƙetare na ingot yakamata ya zama ≤ ± 5°C.
  2. Ba da fifikon amfani da na'urorin da ba a tuntuɓar su ba (e.g., infrared) don sa ido kan zafin jiki na zahiri, maye gurbin hulɗar thermocouples waɗanda ke da babban lag.

3. Ikon Ƙarshen Bayani: Yadda Ake Ƙayyade Zazzaɓin Ƙarshen Juyawa?

Zazzabi mai jujjuyawa na gamawa shine zafin kayan a ƙarshen mirgina mai zafi. Kai tsaye yana ƙayyade microstructure da kaddarorin farko na samfurin fitarwa kuma shine babban fifikona yanayin kula da taga.

Babban Tushen don Ƙaddamarwa:

• Dokar Recrystallization: Dole ne ya kasance sama da cikakkiyar zafin jiki na recrystallization (~ 330 ° C 5052) don tabbatar da an maye gurbin gurɓataccen tsarin da sabon, daidaitattun hatsi marasa iri.
• Matsakaicin Girman Hatsi: Yawan zafin jiki mai yawa (>380° C) yana haifar da haɓakar hatsi mara kyau (m) bayan recrystallization, lalacewar inji Properties da surface ingancin.

Shawarar Taga da Aikace-aikacen Yanayin:

• Gabaɗaya Tagar Safe: 330-350°C. A tsakanin wannan kewayon, ana iya samun ma'auni tsakanin cikakken recrystallization da girman hatsin da ya dace.

Maɓalli Control:

1. Daidaita Tsayi: Daidai sarrafa zafin mirginawar ƙarewa ta hanyar daidaita saurin mirgina da ƙarfin sanyaya emulsion. Ƙaruwa da sauri na ~10% yana haifar da hawan zafin jiki na ~ 5-10 ° C.
2. Daidaitaccen Kulawa: A fitowar wucewar karshe, dole ne a yi amfani da pyrometer mai amsawa mai girma don saka idanu, tare da karkacewa sarrafawa a ciki ±5°C.

4. Taswirar Ayyukan Kula da Zazzabi mai cikakken tsari

Sanin yanayin farawa da ƙarshen bai isa ba; canjin yanayin zafi a cikin dukkan tsari dole ne ya kasance “ana sa ido a cikin ainihin-lokaci kuma ana gudanar da shi cikin kuzari.” Hoton da ke ƙasa yana bayyana yanayin yanayin yanayin yanayin yanayin yanayin yanayi da maɓalli masu sarrafa maɓalli a lokacin juyi mai zafi:

Fassarar Mahimman Bayanan Kulawa:

1. Matakin Roughing: Zazzabi a zahiri yana faɗuwa daga wurin farawa. Duk da haka, ta hanyoyin kamar mirgine preheating, ya kamata a tabbatar da cewa lokacin da aka yi birgima zuwa matsakaicin kauri (e.g., 20mm), zafin jiki baya ƙasa da 400 ° C don hana haɓakar haɓakar juriya.
2. Matakin Ƙarshe: Ana sarrafa yanayin zafin kayan daidai cikin taga yanayin da aka gama mirginawa ta wurin “kan-kashe” da kuma kwarara tsari na emulsion fesa. Wannan babban aiki ne na tsarin sarrafawa ta atomatik na zamani.
3. Banbancin Gudanarwa: Kamar yadda aka nuna a cikin ginshiƙi, da zarar zafin jiki ya karkata daga taga, dole ne a sami matakan gyara bayyane. Karancin ƙasa yana buƙatar tanderu “magani,” tsayi da yawa yana buƙatar sanyaya gaggawa don hana lahani na tsari.

5. Kayan aiki da Tabbatarwa: Taimako don Aiwatar da Taga

• Tallafin Kayan aiki: Yakamata a samar da layukan mirgina masu zafi na zamani Multi-point, tsarin auna zafin infrared mara lamba, an haɗa shi a cikin rufaffiyar madauki tare da saurin niƙa da tsarin sanyaya don sarrafawa. Rolls na buƙatar tashoshi masu sanyaya na ciki don hana dumama hannun jari na gida saboda naɗaɗɗen da kansu yayi zafi.
• Tabbatar da Aiki: Ƙunƙara mai zafi da aka yi a cikin madaidaicin taga zafin jiki (e.g., fara 520°C, zafin jiki na 340 ° C) kamata yayi da uniform, equiaxed recrystalized hatsi tsarin. Bayan sanyi mai birgima da annealing (O-sa fushi), hankula inji Properties ya kamata stably isa: Ƙarfin Ƙarfin Ƙarfi (Rm) ≥175 MPa, Ƙarfin Haɓaka (Rp0.2) ≥65 MPa, Tsawaitawa (A) ≥32%. Wannan shine ma'auni na ƙarshe don gwada ko taga zafin jiki yana da ma'ana.

6. Ƙarshe

Ƙayyadaddun taga zafin mirgina mai zafi don 5052 Aluminum da'irori ainihin madaidaicin ƙirar tsari ne mai bin ƙa'idodin kimiyyar kayan aiki:

• Zazzabi na farawa (510-530C)shine wurin farawa don aminci da filastik, bukatar gudanar da gaba da homogenization sakamako.
• Ƙarshen zafin jiki (330-350°C)shine ƙarshen tsari da kaddarorin, kuma dole ne a tabbatar da cikakken recrystallization.

Wannan “taga zinariya” ba ƙayyadadden ƙima ba ne kuma yana buƙatar daidaitawa bisa ga amfani da ƙarshen samfurin, ƙayyadaddun kauri, da damar kayan aiki. Makullin nasara yana cikin canza yanayin zafi “saiti” zo a “barga mai ƙima” akan layin samarwa, wanda ya dogara da ganewa daidai, amsa da sauri, da kuma rufaffiyar madauki ta atomatik. Sai kawai ta wannan hanya iya kyau kwarai muhimmi halaye na 5052 aluminium alloy a kunna daidai kuma a wuce ta hanyar tsarin jujjuyawar zafi.