Tsarin Inganta Tsari don Ƙarshen Sama 5052 Aluminum Alloy Hot-Rolled Fayafai

Don rage rashin ƙarfi da ƙarfi (Ra) na 5052 Fayafai masu zafi na aluminum daga 1.0-3.0 μm zuwa ƙasa 0.4 μm, ko ma cimma kammalawar madubi, ana buƙatar haɓaka tsari na waɗannan mahimman wurare huɗu masu zuwa, bin ka'idodin “sarrafa tushen, daidaitaccen aiki, da magani na ƙarshe.”

1. Zafafan Mirgina Tsari: Daidaitaccen Gudanarwa a Tushen

Wannan matakin yana nufin samun yunifom, tsaftataccen zafi-birgima mara kyau, aza harsashin gamawa na gaba.

1.1 Gudanarwar Rubutun Cikakkun Zagaye

• Ingancin ƙasa: Dole ne a yi aikin rolls high-daidaici nika, tare da farkon saman roughness Ra ≤ 0.3 μm. Kafa tsayayyen tsarin dubawa; bayan kowace ton 100-200 da aka samar ko ta sake zagayowar samarwa, Dole ne a bincika rolls kuma a canza su don kawar da rami, aluminium karba, da karce.
• Tsabtace Kan layi: A ba da gefen fita na roughing da karewa niƙa da babban ƙarfi kan layi goga rolls​ (karfe ko nailan) don ci gaba da cire tarar aluminum da fina-finai oxide daga saman nadi, kiyaye uniform da barga yanayin yi.
• Mirgine Material: Zai fi dacewa amfani da rolls tare da high taurin da kuma sa juriya, irin su ƙarfen simintin gyare-gyaren chromium ko naɗaɗɗen gawa mai ƙarfi, don tsawaita tsawon lokacin ƙarewa mai tsayi da kuma rage dabi'ar ɗaukar aluminum.

1.2 Daidaita Daidaitaccen Ma'aunin Tsari

• Tagar zafin jiki: Tsaya sarrafa fara mirgina zafin jiki480-520 ° C da kuma zafin jiki kammala mirgina zafin jikiba kasa da 300-350 ° C. Matsanancin zafin jiki yana ƙara ɗaukar hoto da oxidation, yayin da ƙananan yanayin zafi ya wuce kima yana haifar da haɗarin fashewar saman.
• Jadawalin lalacewa: karba a “Multi-wuta, ƙananan raguwa”dabarun, tare da adadin raguwar wucewa ɗaya shawarar ≤15%, don tabbatar da nakasar iri ɗaya da guje wa lahani kamar bawo orange da ƙananan fasa.
• Daidaita Sauri: Ya kamata a haɗa saurin jujjuyawa tare da iyawar mai da sanyaya. A barga, low gudun 70-100 m / min a lokacin roughingana ba da shawarar don rage alamun zance na sama wanda girgizar kayan aiki ke haifar.

1.3 Lubrication Synergistic da sanyaya

• Tabbatar da Lubrication: Yi amfani da emulsion mai zafi na musamman tare da high matsananci matsa lamba yi da ƙananan danko, tare da sarrafa taro tsakanin 3% -5%. Inganta shimfidar bututun ƙarfe da matsa lamba don tabbatar da ci gaba, barga mai man shafawa film siffofin a cikin yi-abu-kayan cizo zone, yadda ya kamata rage gogayya da karba.
• Ikon sanyaya Mai Tsanani: Aiki a kashi, karfi convection sanyayatsarin don cire zafi mai juyi da sauri da kuma iri ɗaya, danne surface hadawan abu da iskar shaka da karban na biyu lalacewa ta hanyar high tsiri zazzabi.

2. Cold Rolling da Kammalawa: Matakin Inganta Maɓalli

Mirgina sanyi yana ƙara fa'ida saman kuma yana sake gyara ƙananan tsarin, wakiltar babban mataki don samun nasara a cikin raguwar Ra.

1. Breakdown Rolling (Matsayi): Amfani EDT-textured aikin rolls​ (1.5-2.5 m) don izinin farko tare da raguwar raguwa ≥30%, mai da hankali kan kawar da layin baki, bambancin launi, da rashin daidaituwa na macroscopic gado daga zafi birgima.
2. Gama Mirgina (Haskakawa): Canja zuwa superfinely kasa aiki rolls​ (Ra ≤ 0.3 μm). Cimma uniform, mai haske mai birgima tare da Ra tsayayyen sarrafawa a ciki 0.4- 0.8 mta hanyar da ta ƙunshi ≥2 wucewa da jimlar raguwar rabo ≥50%.
3. Matsayin tashin hankali: Aiwatar low elongation (0.5%-1.5%)mikewa matakin lankwasawa don inganta flatness yayin da ake kara kawar da damuwa na ciki da kuma sassaukar da micro-surface.

3. Maganin Sama Mai Zuwa: Cimma Ƙarshen Ƙarshe

Zaɓi tsarin jiyya na saman da ya dace dangane da buƙatun aikace-aikacen ƙarshe don cimma sauye-sauye daga madaidaicin-sa zuwa ƙare-jin madubi.

3.1 Gyaran injina (Yadu Amfani)

• Tsari: M goge goge (800#-1200#) → Matsakaicin goge goge (1500#-2000#) → Kyakkyawan goge goge (polishing fili/ dabaran zane).
• Sakamako: Zai iya cimma a satin zuwa madubigama, rage Ra zuwa 0.1- 0.4 m. Sarrafa matsa lamba da sauri don hana overheating da oxidation.

3.2 Electropolishing (Ƙarshen Madubin Ƙarshen Ƙarshe)

• Ka'ida: Matakan da ƙananan bayanan martaba ta hanyar narkar da zaɓi na electrochemical.
• Sakamako: Yana samar da a rashin damuwa, babban madubi mai shekigama da Ra ≤ 0.1 μm, yayin da inganta lalata juriya. Tsari: Ragewa → Electropolishing → Neutralization → Kurkura → bushewa.

3.3 Magungunan Sinadarai (Ingantacce da Uniform)

• Chemical Polishing: An yi shi a cikin tsarin phosphoric-sulfuric acid don samun saurin yunifom, haske mai haske tare da Ra kusan 0.4-0.8 μm.
• Alkaline Etching: Yana amfani da maganin alkaline mai laushi (e.g., NaOH 50-80 g/L) a matsayin riga-kafi don cire fim ɗin oxide na halitta da ƙananan lahani.

3.4 Tsaftacewa da Kariya (Tabbacin inganci)

• Tsabtace Zurfi: Amfani alkaline cleaners hade da ultrasonictsaftacewa don cire duk mai da sauran abubuwan da suka rage daga hanyoyin da suka gabata.
• Kariya kai tsaye: Yi chromate-free passivationko kuma yi amfani da fim ɗin kariya na PEnan da nan bayan tsaftacewa don hana oxidation stains ko scratches a lokacin ajiya da kuma sufuri.

4. Ganewar Lalacewar gama gari da Matakan Magani cikin gaggawa

5. Surface Finish Target System and Inspection Control

Ƙirƙiri bayyanannun matakan inganci da hanyoyin dubawa don sarrafa madauki.

• Matsayin Masana'antu: Ra 0.8- 1.6 m​ (Standard Hot Rolling + Sanyi mirgina)
• Madaidaicin Matsayi: Ra 0.4- 0.8 m​ (Ingantaccen Gyaran Sanyi + Gyaran injina)
• Matsayin madubi: Ra ≤ 0.2 μm​ (Electropolishing / Ƙarfafawa)

Hanyoyin dubawa:

• Tashin hankali: Yi amfani da lamba ko mara lamba na'ura mai gwadawadon auna ƙimar Ra lokaci-lokaci. Samfura masu mahimmanci suna buƙata 100% dubawa ko ƙara yawan mitar samfur.
• Gloss: Don samfuran da aka gama madubi tare da buƙatun bayyanar, ƙarin kimantawa tare da a 60° mitar mai shekidon kimanta ƙima.