Tasirin gas na kariya a cikin layin laser
Hannun Lakeld Laser Welder
BABI NA:
▶ Menene zai iya samun iskar garkuna zai same ku?
▶ nau'ikan gas na kariya
▶ hanyoyi biyu na amfani da gas mai kariya
▶ Yadda za a zabi gas mai kariya?
Hannun lasheld Laser Welding
Ingantaccen sakamako na isasshen Gas
A cikin walding waldi, zabi na gas mai kariya na iya samun tasiri a kan samuwar, inganci, zurfin, da nisa na wald na weld. A cikin mafi yawan lokuta, gabatarwar gas na kariya yana da tasiri mai kyau akan weld Seam. Koyaya, zai iya samun tasirin m. Kyakkyawan tasirin amfani da gas mai kariya ga kamar haka:
1. Ingancin kariya daga gidan wanka na Wel
Gabatarwar da ta dace na gas mai kariya na gas na iya kare nauyin weldation daga hadawan jiki ko ma hana hadawan abu gaba ɗaya.
2. Ragewar fuka
Daidai yana gabatar da gas mai kariya na iya rage yawan zubewa yayin aiwatar da walwala.
3
Ingantaccen aikin da ya dace da gas na kariya na inganta har ma yana yada wuraren shakatawa na Weld a yayin ƙarfafa, wanda ya haifar da suturar Weld da uniform.
4. Yawan adadin laser
Daidai gabatar da gas na kariya da kyau rage rage karewar karfe vapor ko girgije mai katako akan laser, ta zahiri ya karfafa tasirin Laser.
5. Ragewa na Pamel Lindi
Daidai gabatar da gas na kariya na iya rage yawan samar da pores na gas a cikin Weld Seam. Ta hanyar zaɓar nau'in gas ɗin da ya dace, farashin mai gudana, da hanyar gabatarwa, ana iya cimma sakamako mai kyau.
Koyaya,
Amfani da iskar gas na kariya na iya samun sakamako masu illa ga waldi. Tasirin cutar sun hada da:
1. Hankalin Seam Seam
Ingantaccen gabatarwar gas na iya haifar da ingancin weld Seam Selam.
2. Fashin da rage kayan aikin injin
Zabi nau'in gas da ba daidai ba na iya haifar da Weld Seam Seam Chrows da Rage Aiwatarwa na inji.
3. Yawan hade da iskar shawa ko tsangwama
Zabi farashin gas da ba daidai ba, ko babba ko ya ragu, zai iya haifar da haɓakar iskar wuce gona da iri na Weld Seam. Hakanan yana iya haifar da rikice-rikice mai wahala zuwa ƙarfe mai narkewa, yana haifar da lalacewa ko rashin daidaituwa na Weld Seam.
4. Isasshen kariya ko tasiri mara kyau
Zabi hanyar gabatarwar gas da ba ta dace ba za ta iya haifar da rashin isasshen kariya daga cikin seam na Weld ko ma da mummunan sakamako akan samuwar Seam Seam.
5. Tasiri kan zurfin Weld
Gabatarwar iskar gas na iya samun wani tasiri a kan zurfin Weld, musamman a Welding na bakin ciki, inda ya fizge zurfin Weld.
Hannun lasheld Laser Welding
Nau'in gas na kariya
Abubuwan da aka gama amfani da su na yau da kullun a cikin Laser Welding ne nitrogen (N2), Argon (AR), da Helium (Shi). Waɗannan gas ɗin suna da keɓaɓɓun kayan jiki da sunadarai, waɗanda ke haifar da canji mai yawa akan walwala.
1. Nitrogen (n2)
N2 yana da ƙarfin matsakaici na matsakaici, sama da ƙasa kuma ƙasa da shi. A karkashin aikin laser, shi ya kai ga matsakaitan mataki na matsakaici, yadda ya kamata ya yi kyau a kan samuwar girgije plasma da kara amfani da laserma. Koyaya, nitrogen na iya amsawa chilolical tare da allo na aluminum da carbon karfe a wasu yanayin zafi, samar da nitries. Wannan na iya ƙara ɗan liyafar kuma rage tauri na Weld Seam, mara kyau yana cutar da kadarorinta na kayan aikinta. Saboda haka, yin amfani da nitrogen a matsayin gas mai kariya ga allolin aluminum da kuma welds na katako ba da shawarar ba. A gefe guda, nitrogen na iya amsawa tare da bakin karfe, forming nitrides wanda ke inganta ƙarfin Weld hadin gwiwa. Saboda haka, za a iya amfani da nitrogen azaman gas mai kariya ga walda bakin karfe.
2. Gas Argon (AR)
Gas din Argon yana da mafi ƙarancin ƙarfin ioniz da ƙarfi, yana haifar da babban matakin ionization a ƙarƙashin aikin Laser. Wannan ba shi yiwuwa ga sarrafa samuwar girgije plasma kuma yana iya samun wani tasiri a kan ingantaccen amfani da laes. Koyaya, Argon yana da ƙarancin tsayayyen rayuwa sosai kuma ba zai yiwu a yi maganin sunadarai ba tare da karafa gama gari. Ari ga haka, Argon yana da tasiri. Bugu da ƙari, saboda babban yawa, Argon ya ɗora saman tafiye-tafiye na Weld, yana samar da mafi kyawun kariya ga wuraren Weld Pool. Sabili da haka, ana iya amfani dashi azaman gas na al'ada.
3. Grie Greum (shi)
Gillium gas yana da mafi girman ƙarfin ioni, yana haifar da ƙarancin digiri na ionization a ƙarƙashin Laser. Yana ba da damar mafi kyawun ikon girgije plasma samuwar, da kuma tarers na iya yin hulɗa tare da karafa. Haka kuma, Helium yana da ƙarancin halayen sunadarai tare da karyacewar sunadarai tare da ƙarfe, sanya shi ingantaccen gas don garkuwa da Weld. Koyaya, farashin helium ya yi yawa, don haka ba a amfani da shi a cikin taro na samfuran samfuran. Ana yawanci aiki a cikin binciken kimiyya ko kuma samfuran ƙara-kara.
Hannun lasheld Laser Welding
Hanyar gabatar da iskar gas
A halin yanzu, akwai hanyoyi guda biyu don gabatar da iskar gas: a gefen gefen hatsar gas, kamar yadda aka nuna a hoto 1 da siffa 2, bi da bi.
Hoto na 1: Kashe-Axis gefen yana busa mai kare gas
Hoto na 2: Gas na COAXIL
Zabi tsakanin hanyoyin buri biyu sun dogara da la'akari da yawa. Gabaɗaya, ana bada shawara don amfani da hanyar hurawa ta gefen-Axis don kare gas.
Hannun lasheld Laser Welding
Ka'idodi na zabar hanyar gabatar da iskar gas
Da fari dai, yana da mahimmanci a fayyace cewa kalmar "oxidation" na welds alama ce mai mahimmanci. A cikin ka'idar, yana nufin lalacewar inganci mai kyau saboda halayen sunadarai tsakanin weld karfe, kamar oxygen, nitrogen, da hydrogen.
Hana waka oxidation oxidation ya shafi rage ko guje wa lamba tsakanin wadannan munanan abubuwan da ke cutarwa da kuma m karfe wel. Wannan halin da ake ciki ya haɗa da ba kawai baƙin ƙarfe na Weld ba har zuwa lokacin da ƙarfe na zamani ya narke har zuwa ruwan sama ya ragu da wani ƙafarsa.
Misali, a cikin walda na allolin Alloums, lokacin da zazzabi ya wuce 300 ° C, sha hydron sha; sama da 450 ° C, saurin oxygen yana faruwa; Kuma sama da 600 ° C, saurin nitrogen yana faruwa. Saboda haka, ana buƙatar kariya mai inganci don titanium Alloy a lokacin da lokacin da ya ƙarfafa kuma ya rage yawan zafin jiki a ƙasa da 300 ° C don hana hadawan hadawa. Dangane da bayanin da ke sama, ya bayyana sarai cewa kare gas mai kariya yana buƙatar samar da kariya ba kawai ga Weld Pool ba har zuwa yankin da ya dace na Weld. Don haka, hanyar bugun gefen da aka nuna a cikin Hoto na 1 saboda yana ba da damar ƙwararraki idan aka nuna shi da hanyar kare nauyin 2, musamman don yankin tabbatar da Weld. Koyaya, don wasu takamaiman samfuran, zaɓin hanyar yana buƙatar ginawa bisa tsarin samfurin da kuma tsarin haɗin haɗin gwiwa.
Hannun lasheld Laser Welding
Takamaiman zaɓi na hanyar hanyar gabatar da iskar gas
1. Hanyar madaidaiciya
Idan sifar Weld ɗin yana madaidaiciya, kamar yadda aka nuna a cikin Hoto na 3, da kuma haɗin gwiwa, welds, hanyar welds, hanyar da aka fi so don wannan nau'in hatsarfin hanyar da aka nuna a ciki Hoto 1.
Hoto 3: madaidaiciya Weld
2. Tsarin rufewa na geometry
Kamar yadda aka nuna a cikin Hoto na 4, Weld a cikin wannan nau'in samfurin yana da ƙirar ƙera siffar, kamar madauwari, polygonal, ko siffar layin layi. Haɗin gwiwa na haɗin gwiwa na iya haɗawa da gidajen abinci na Butt, ko kayan haɗin gwiwa, ko kuma welds stand. Don irin wannan samfurin, hanyar da aka fi so ita ce amfani da gas mai kariya ta Coaxal da aka nuna a cikin Hoto na 2.
Hoto na 4: Tsarin rufe geometry Weld
Zabi na kare gas don shirin rufe geometry kai tsaye yana shafar ingancin inganci kai tsaye yana shafar ingancin inganci, inganci, da kuma farashin samar da walda. Koyaya, saboda bambancin kayan walda, zaɓi na gas mai walda yana da hadaddun kan matakan waldi. Yana buƙatar cikakkiyar la'akari da kayan waldi, hanyoyin walda, suna da walda, da sakamako mai amfani. Za a iya tantance gas mafi dacewa walda ta hanyar gwajin waldi don samun sakamako mai kyau waldi.
Hannun lasheld Laser Welding
Nuni na bidiyo | Girgi don layin laserelding
Video 1 - Ka san ƙarin game da abin da aka sanya hannu na layin laser
Bidiyo2 - Walding Laser Welding don bukatun rarrabuwa
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Lokaci: Mayu-19-2023