A cikin manyan masana'antun zamani{0}}}arshen masana'antu{1} musamman a cikin kera motoci, madaidaicin ƙarfe, da sabbin sassan tiren baturin makamashi{2}}ƙarfin haɗin gwiwa da amincin waldar goro suna tasiri kai tsaye ga amincin tsari da rayuwar sabis na samfurin ƙarshe. Matsakaicin Mitar Kai tsaye na Yanzu (MFDC)juriya waldi inji, tare da babban ingancinsa, tanadin makamashi, da kwanciyar hankali mai inganci, ya maye gurbin al'adun gargajiya na AC, ya zama tushen fasaha na ginshiƙan hanyoyin walda na goro.
Duk da haka, cimma "sifili" na walda na goro yana buƙatar masu aiki da su fahimci ƙa'idodin fasaha sosai kuma su sarrafa kowane mataki mai mahimmanci, tun daga farko{1} magani zuwa saitin sigina.
Binciken Fasahar Welding na MFDC: Me yasa Ya Zaɓan Zaɓin Welding Na goro
Nut tsinkayar walda shine ainihin tsarin juriya na walda. Yana amfani da juriya zafi generated ta halin yanzu gudãna ta cikin workpieces' lamba saman don narke da tsinkaya da samar da wani m weld nugget tare da tushe abu. Welder MFDC shine zaɓin da aka fi so da farko saboda halayen ƙarfinsa na musamman:
1. Stable DC Fitar da Ƙarfafa Makamashi
Welder MFDC yana jujjuya ikon AC na 50Hz ko 60Hz zuwa matsakaicin matsakaici - mitar AC halin yanzu (1000Hz ko sama) ta hanyar gyarawa{4}} fasahar inverter. Ana sauke wannan ta hanyar wutan lantarki kuma a gyara shi zuwa cikin santsi, bugun jini kai tsaye. Fa'idodin wannan fitarwa na DC suna da mahimmanci:
- Input ɗin Zafin Tsafi:Yana kawar da rashin daidaituwar yanayin zafi da ke haifar da canjin yanayi na yanzu a sifili{0} madaidaitan maki a cikin walda AC na gargajiya, yana tabbatar da ci gaba da daidaiton kuzari yayin ƙirƙirar walda.
- Ingantacciyar Lokacin walda:Idan aka kwatanta da na'urorin walda na AC, MFDC na samar da ingantaccen lokacin walda mai tsayi, yana ba da damar zurfafa zurfafan shigar iri ɗaya cikin ɗan gajeren lokaci. Wannan yana da mahimmanci musamman ga kayan da ke da alaƙa da shigarwar zafi, kamar Ƙarfe Mai ƙarfi - .
2. Ingantaccen Makamashi da Tsawon Rayuwar Electrode
Domin injin na'urar na'urar na'ura yana aiki a matsakaicin mita, girmansa da nauyinsa suna raguwa sosai. A lokaci guda, ƙarfin wutar lantarki yana haɓaka sosai, galibi yana wuce 95%, yana haifar da kusan 30% tanadin makamashi idan aka kwatanta da AC walda [1]. Mafi mahimmanci, kwanciyar hankali na DC na halin yanzu yana rage girman dumama lantarki da iskar shaka, ta haka yana tsawaita rayuwar sabis na lantarki da rage raguwar lokacin da ake samu ta hanyar yin sutura akai-akai da sauyawa.
Kyakkyawan-Ma'auni na walda: Mahimman Bayanan Fasaha
Ikon ingancin walda na tsinkayar goro yana tafe da "mahimman abubuwa guda uku": Welding Current, Electrode Force, and Welding Time. Wadannan abubuwa guda uku sun dogara da juna kuma tare suna ƙayyade girman da ƙarfin walda nugget.
1. Welding Current: The Determinating na Heat Input
Yanzu shine tushen farko na samar da zafi, kuma girmansa kai tsaye yana nuna saurin narkewar tsinkaya da girman walda na ƙarshe. Rashin isassun halin yanzu yana haifar da walda mai sanyi ko rashin isassun girman ƙugiya, yayin da wuce kima na halin yanzu yana haifar da ɗumamar ƙarfe, korar (spatter), ƙone zaren, ko ma huda. Don manyan kayan juriya kamar galvanized karfe, dole ne a ƙara na yanzu da kashi 20% zuwa 40% don kutsawa cikin Layer na zinc da kuma tabbatar da haɗin gwiwa mai inganci tare da kayan tushe [2].
2. Ƙarfin Electrode: Daidaita nakasar Filastik da Juriya Heat
Ƙarfi yana taka rawa biyu yayin aikin walda:
- Matakin Farko:Ƙarfin yana tabbatar da kusancin kusanci tsakanin tsinkayar goro da kayan tushe, yana kafa juriyar tuntuɓar farko{0}}wani abin da ake buƙata don samar da zafi.
- Matakin walda:Ƙarfin yana haɓaka nakasar robobi na narkakkar ƙarfe a yanayin zafi mai zafi, yana samar da ƙwanƙolin walda mai yawa.
Rashin isassun ƙarfi shine dalilin farko na korar mai tsanani (spatter), saboda narkakkar ƙarfe ba zai iya ƙunshe da kyau ba. Akasin haka, ƙarfin da ya wuce kima da wuri yana rushe hasashen, yana rage yawa kuma yana iya haifar da rashin isasshen ƙarfin walda.
3. Lokacin walda: Madaidaicin Sarrafa Makamashi
Lokacin walda ana sarrafa shi daidai, yawanci ana auna shi cikin millise seconds (ms). Welders na MFDC sukan yi amfani da yanayin bugun jini da yawa, wanda ya ƙunshi matakai uku: pre{2}} zafi, walda, da fushi (ko sanyi). The pre{4} ƙwanƙwasa zafi yana kawar da gurɓataccen ƙasa kuma yana rage tasiri; bugun jini na walda yana samar da nugget; kuma bugun jini yana ba da damar jinkirin sanyaya, rage damuwa na thermal da haɓaka taurin weld.
Teburin Magana Na Musamman don Nut Hasashen Welding
| Girman Kwaya | Ƙarfin Electrode (kN) | Welding Current (kA) | Lokacin walda (ms) |
Maƙaman Ƙarƙashin Ƙarƙashin Ƙwararru (Nm) |
Matsakaicin Kauri (mm) |
| M6 | 2.5 - 3.5 | 8.0 - 10.0 | 160 - 240 | Yafi ko daidai da 20 | 0.8 - 1.5 |
| M8 | 3.5 - 5.0 | 10.0 - 12.0 | 200 - 300 | Yafi ko daidai da 45 | 1.0 - 2.0 |
| M10 | 5.0 - 6.5 | 12.0 - 15.0 | 240 - 360 | Yafi ko daidaita 80 | 1.5 - 3.0 |
Pre{0}Tsarin Weld da Rigakafin Lalacewa: Muhimman Ayyukan Aiki
Nasarar walda tana farawa tare da tsananin bin daki-daki. Dole ne ma'aikata su haɗa abubuwa masu zuwa cikin jerin abubuwan dubawa na yau da kullun:
1. Ka'idar "Tsaftace Uku{{1}" don Magani Gabaɗaya
- Man - Kyauta: Tabbatar cewa saman aikin ba shi da kowane mai, maiko, ko yankan rago na ruwa, wanda zai iya haifar da hayaki mai mahimmanci da porosity yayin walda.
- Tsatsa/Oxide - Kyauta: Duk wani Layer oxide yana ƙaruwa da ƙarfi da ƙarfi, yana haifar da zafi don tattarawa a saman kawai, yana haifar da "ƙarar walda" ko kora mai tsanani.
- Burr - Kyauta: Alamar lamba tsakanin goro da karfen goro dole ne ya zama lebur don hana mummuna lamba ko karkacewar jeri ta hanyar burrs.
2. Kula da Electrodes da Tsarin Ganowa
Lantarki shine "gada" don watsawa a halin yanzu, kuma yanayinsa yana rinjayar yawan halin yanzu.
- Tufafin Electrode: Dole ne a yi amfani da ƙwararrun masu suturar lantarki don kula da siffar jumometric na tip ɗin lantarki (yawanci lebur ko ɗan ɗaki). Lokacin da diamita na lantarki ya ƙare da fiye da 15% na girmansa na asali, ya kamata a yi ado nan da nan ko kuma a canza shi don kiyaye daidaitaccen yawan halin yanzu.
- Gano Kariyar Fil: walda tsinkayar kwaya yawanci yana amfani da ƙananan lantarki sanye take da fil ɗin gano wuri don tabbatar da daidaitaccen jeri na goro. Dole ne a rika duba fil ɗin da ake ganowa akai-akai don tabbatar da ya yi santsi kuma bai lalace ba, tare da hana lalacewa ga zaren ciki na goro yayin aikin walda.
3. A cikin -Ganewar Zurfi da Magani don Rarraba Jama'a
| Al'amari na lahani | Babban Dalilan Bincike | Dabarun Magani da Aka Yi Niyya |
| Korar Tsanani (Spatter) | Rashin isasshen ƙarfi don ɗaukar narkakkar karfe; ko lokacin tashi na yanzu yayi sauri sosai. | Ƙara ƙarfin lantarki; yi amfani da aikin jinkiri na farko{0} don tabbatar da yin amfani da ƙarfi sosai; yi amfani da yanayin zafi da yawa - pulse pre{2}}. |
| Toshe Zare ko Lalacewa | Yawan zafin walda yana haifar da narkakkar ƙarfe zuwa cikin zaren; ko sawa/bacewar fil ɗin ganowa. | Rage lokacin walda; rage walda halin yanzu; dubawa da maye gurbin fil ɗin da ake ganowa; tabbatar da daidaito tsakanin goro da fil ɗin ganowa. |
| Rashin Ƙarfin Weld (Cold Weld) | Yanzu ya yi ƙasa da ƙasa, yana haifar da rashin isasshen girman ƙugiya; ko kuma karfi ya yi yawa, yana haifar da rugujewar tsinkaya da wuri. | Ƙara walda halin yanzu; tabbatar da daidaito tsayin tsinkaya; yi gwajin ɓarna ko ɓarna don tabbatar da girman nugget. |
| Weld Spot Blackening / Surface Oxidation | Rashin isasshen sanyaya, yana haifar da zafi don jinkiri akan farfajiyar aikin; ko zafin ruwan sanyi ya yi yawa. | Duba yawan kwararar ruwa da zafin jiki na tsarin sanyaya ruwa; daidai ƙara lokacin sanyaya (matakin zafi); yi amfani da iskar kariya (misali, Argon) don sanyaya mai taimako. |
Saye da Haɓakawa: Yadda Ake Zaɓan Babban - Ingancin MFDC Welder
Ga kamfanonin da ke neman haɓaka haɓakar samarwa da ingancin walda, zaɓar madaidaicin welder na MFDC yana da mahimmanci.
1. Core Control System: Constant Current Mode shine Maɓalli
Babban mai walda MFDC mai inganci- yakamata ya kasance yana da Yanayin Sarrafa Tsare-tsare. A zahiri -asashen duniya, da'irar da'irar walda na iya canzawa saboda dumama na USB, bambance-bambancen aikin zoba, ko jujjuyawar wutar lantarki. Mai sarrafawa akai-akai zai iya saka idanu da daidaita ƙarfin wutar lantarki a cikin ainihin lokaci{4}, yana tabbatar da cewa halin yanzu yana gudana ta wurin walda ya kasance a ƙayyadaddun ƙimar da aka saita, ta haka yana ba da tabbacin daidaiton walƙiya.
2. Tsarin Injini da Rigidity: Ƙarfafa Ƙarƙashin Ƙarfi
Hasashen walda na goro yana buƙatar gagarumin ƙarfin lantarki, ma'ana rigidity ɗin injin walda dole ne ya zama babba na musamman.
- Tsara Tsara:Ba da fifikon nau'in C- ko H -nau'i mai tsayi{2}}ƙaƙƙarfan firam don tabbatar da jikin na'ura ba ya lalacewa ƙarƙashin matsi mai ƙarfi.
- Tsarin Ƙarfafa Ƙarfafawa:Yi amfani da pneumatic ko servo{0} tsarin ƙarfin lantarki. Servo{2}Tsarin wutar lantarki sune zaɓin da aka fi so a cikin manyan sassan masana'antu na ƙarshe kamar kera motoci saboda tsayin daka da shirye-shiryensu a cikin sarrafa ƙarfi, suna ba da izini mai kyau{4}} sarrafa yanayin ƙarfin.
3. Hankali da Binciken Bayanai
Ya kamata masu walda na zamani su haɗa bayanan siye da abubuwan ganowa. Ta hanyar haɗa Tsarin Kula da Ingancin Welding (WQS), ana iya yin rikodin halin yanzu, ƙarfin lantarki, ƙarfi, da maɓallan lokaci na kowane walda a ainihin lokaci{1}. Idan sigogi sun faɗi a wajen taga ingantaccen saiti, tsarin nan da nan yana ƙararrawa kuma yana tuta ɓangaren ɓarna. Wannan yana da mahimmanci ga samfuran da ke buƙatar cikakken ingancin yanayin rayuwa, kamar abubuwan haɗin mota.
Kammalawa
Walda tsinkayar kwaya daidaitaccen tsari ne wanda ke haɗa kimiyyar kayan aiki, injiniyan lantarki, da injiniyan injiniya. Ta hanyar zurfin fahimtar fa'idodin fasaha naFarashin MFDC, Tsananin aiwatar da ƙa'idar "Uku{0}Tsaftace" don shirye-shiryen riga-kafi, da kuma amfani da nassoshi da hanyoyin gano lahani da aka bayar a nan, kamfanoni za su iya inganta yawan amfanin da ake samu a cikin walda tare da kafa ingantaccen tushe na fasaha don cimma babban misali, babban{3}{3} abin dogaro.
