Tasirin Gas Kare Gas a Walƙar Laser
Laser Welder na Hannu
Abun ciki Babi:
▶ Menene Gas ɗin Garkuwar Dama Zai Iya Samu?
▶ Nau'in Gas Na Kariya Daban-daban
▶ Hanyoyi Biyu na Amfani da Gas Na Kariya
▶ Yadda Ake Zaɓan Gas Mai Kariya Daidai?
Laser Walda na Hannu
Ingantacciyar Tasirin Gas ɗin Garkuwa Mai Kyau
A cikin waldawar laser, zaɓin iskar gas mai karewa na iya yin tasiri mai mahimmanci akan samuwar, inganci, zurfin, da faɗin kabu. A mafi yawancin lokuta, ƙaddamar da iskar gas mai karewa yana da tasiri mai kyau akan shingen weld. Duk da haka, yana iya haifar da mummunan tasiri. Ingantattun tasirin amfani da iskar gas mai karewa daidai sune kamar haka:
1. Kyakkyawan kariya na tafkin walda
Ingantacciyar shigar da iskar gas mai karewa zai iya kare tafkin walda yadda ya kamata daga iskar shaka ko ma hana iskar shaka gaba daya.
2. Rage zubewa
Daidai gabatar da iskar gas mai karewa na iya rage yawan bazuwar yayin aikin walda.
3. Uniform samuwar kabu weld
Ingantacciyar shigar da iskar gas mai karewa yana haɓaka ko da yaɗuwar tafkin walda yayin ƙarfafawa, yana haifar da kabu mai ɗaci da ƙayatarwa.
4. Ƙara amfani da Laser
Daidai gabatar da iskar gas mai karewa na iya rage tasirin garkuwar tururi na ƙarfe ko gizagizai na jini akan lasar, ta haka yana ƙara ƙarfin laser.
5. Rage porosity weld
Daidai gabatar da iskar gas mai karewa na iya rage samuwar ramukan iskar gas a cikin kabu na walda. Ta hanyar zaɓar nau'in iskar gas mai dacewa, ƙimar kwarara, da hanyar gabatarwa, ana iya samun sakamako mai kyau.
Duk da haka,
Yin amfani da iskar kariya mara kyau na iya yin illa ga walda. Abubuwan da ba su da kyau sun haɗa da:
1. Lalacewar kabu
Shigar da iskar gas mara kyau na iya haifar da rashin ingancin ɗinkin walda.
2. Cracking da rage inji Properties
Zaɓin nau'in iskar gas ɗin da ba daidai ba zai iya haifar da fashewar kabu da raguwar aikin injiniya.
3. Ƙara oxidation ko tsoma baki
Zaɓin ƙimar iskar gas ɗin da ba ta dace ba, ko babba ko ƙasa da ƙasa, na iya haifar da ƙara yawan iskar oxygen ta kabu. Hakanan yana iya haifar da tsangwama mai tsanani ga narkakkar karfe, wanda ke haifar da rugujewa ko rashin daidaituwar samuwar kabu na walda.
4. Rashin isasshen kariya ko mummunan tasiri
Zaɓin hanyar shigar da iskar gas ɗin da ba daidai ba na iya haifar da rashin isasshen kariya na kabu ko ma yana da mummunan tasiri akan samuwar kabu.
5. Tasiri kan zurfin weld
Shigar da iskar gas mai karewa na iya yin wani tasiri akan zurfin walda, musamman ma a cikin walda na bakin ciki, inda yake ƙoƙarin rage zurfin walda.
Laser Walda na Hannu
Nau'in Gas ɗin Kariya
Abubuwan da aka saba amfani da su na kariya a waldawar laser sune nitrogen (N2), argon (Ar), da helium (He). Wadannan iskar gas suna da kaddarorin jiki da sinadarai daban-daban, wanda ke haifar da tasiri daban-daban akan kabu na walda.
1. Nitrogen (N2)
N2 yana da matsakaicin ƙarfin ionization, sama da Ar kuma ƙasa da shi. A karkashin aikin na'urar, yana yin ionizes zuwa matsakaicin digiri, yadda ya kamata ya rage samuwar gizagizai na plasma da kuma kara amfani da Laser. Duk da haka, nitrogen na iya mayar da martani ta hanyar sinadarai tare da aluminum gami da carbon karfe a wasu yanayin zafi, samar da nitrides. Wannan zai iya ƙara brittleness da kuma rage taurin na weld kabu, barnatar da shafi ta inji Properties. Sabili da haka, ba a ba da shawarar yin amfani da nitrogen a matsayin iskar gas mai karewa don aluminium alloys da carbon karfe welds. A gefe guda, nitrogen na iya amsawa da bakin karfe, samar da nitrides wanda ke haɓaka ƙarfin haɗin gwiwa. Don haka, ana iya amfani da nitrogen a matsayin iskar kariya don walda bakin karfe.
2. Argon Gas
Argon gas yana da mafi ƙarancin ionization makamashi, wanda ya haifar da mafi girma mataki na ionization karkashin Laser mataki. Wannan ba shi da kyau don sarrafa samuwar gizagizai na plasma kuma yana iya samun wani tasiri akan ingantaccen amfani da lasers. Duk da haka, argon yana da ƙarancin reactivity kuma yana da wuya a sha sinadarai tare da karafa na kowa. Bugu da ƙari, argon yana da tasiri. Bugu da ƙari kuma, saboda girman girmansa, argon yana nutsewa sama da tafkin walda, yana ba da kariya mafi kyau ga tafkin weld. Saboda haka, ana iya amfani da shi azaman iskar kariya ta al'ada.
3. Gas (Helium Gas)
Gas na helium yana da mafi girman ƙarfin ionization, wanda ke haifar da ƙarancin ionization a ƙarƙashin aikin laser. Yana ba da damar ingantacciyar kulawar samuwar girgijen plasma, kuma lasers na iya yin hulɗa da ƙarfe yadda ya kamata. Bugu da ƙari, helium yana da ƙarancin amsawa kuma baya jurewa da halayen sinadarai tare da karafa, yana mai da shi kyakkyawan iskar gas don garkuwar walda. Duk da haka, farashin helium yana da yawa, don haka ba a amfani da shi gabaɗaya wajen samar da samfura da yawa. Ana yawan amfani da shi a cikin binciken kimiyya ko don ƙarin samfura masu ƙima.
Laser Walda na Hannu
Hanyoyin Gabatar da Gas ɗin Garkuwa
A halin yanzu, akwai manyan hanyoyi guda biyu don gabatar da iskar kariya: busa gefen axis da iskar kariya ta coaxial, kamar yadda aka nuna a hoto na 1 da hoto 2, bi da bi.
Hoto 1: Gas ɗin Garkuwar Ƙaƙwalwar Ƙaƙwalwa
Hoto 2: Coaxial Garkuwar Gas
Zaɓin tsakanin hanyoyin busa guda biyu ya dogara da la'akari daban-daban. Gabaɗaya, ana ba da shawarar yin amfani da hanyar busa gefen axis don kare iskar gas.
Laser Walda na Hannu
Ka'idoji don Zabar Hanyar Gabatar da Gas ɗin Garkuwa
Da farko, yana da mahimmanci a fayyace cewa kalmar "oxidation" na welds magana ce ta baki. A ka'ida, yana nufin lalacewar ingancin walda saboda halayen sinadarai tsakanin ƙarfen walda da abubuwan da ke cutarwa a cikin iska, kamar oxygen, nitrogen, da hydrogen.
Hana oxidation na walda ya haɗa da rage ko guje wa hulɗa tsakanin waɗannan abubuwa masu cutarwa da ƙarfe mai zafi mai zafi. Wannan yanayin zafi mai zafi ya haɗa da ba kawai narkakkar walda ta tafkin ba har ma da dukan tsawon lokacin daga lokacin da ƙarfen walda ya narke har sai tafkin ya daidaita kuma zafinsa ya ragu ƙasa da wani kofa.
Alal misali, a cikin walda na titanium alloys, lokacin da zafin jiki ya wuce 300 ° C, saurin shan hydrogen yana faruwa; sama da 450 ° C, saurin iskar oxygen yana faruwa; kuma sama da 600 ° C, saurin sha nitrogen yana faruwa. Don haka, ana buƙatar kariya mai inganci don walƙiya gami da titanium a lokacin lokacin lokacin da ya ƙarfafa kuma zafinsa yana raguwa ƙasa da 300 ° C don hana iskar oxygen. Dangane da bayanin da ke sama, a bayyane yake cewa iskar garkuwar da aka hura tana buƙatar ba da kariya ba kawai ga tafkin walda a lokacin da ya dace ba har ma da yanki mai ƙarfi na walƙiya. Don haka, hanyar busa gefen axis da aka nuna a cikin Hoto 1 gabaɗaya an fi so saboda yana ba da kariya mai yawa idan aka kwatanta da hanyar kariya ta coaxial da aka nuna a cikin Hoto 2, musamman don ƙaƙƙarfan yanki na walda. Duk da haka, don wasu samfurori na musamman, zaɓin hanyar yana buƙatar yin la'akari da tsarin samfurin da haɗin gwiwa.
Laser Walda na Hannu
Takamaiman Zaɓin Hanyar Gabatar da Gas ɗin Garkuwa
1. Madaidaicin layi Weld
Idan siffar weld ɗin samfurin ta kasance madaidaiciya, kamar yadda aka nuna a hoto na 3, kuma tsarin haɗin gwiwa ya haɗa da mahaɗin gindi, mahaɗin cinya, welds na fillet, ko rijiyar tari, hanyar da aka fi so don irin wannan samfurin ita ce hanyar busa gefen axis da aka nuna a ciki. Hoto 1.
Hoto 3: Madaidaicin Weld
2. Planar Enclosed Geometry Weld
Kamar yadda aka nuna a hoto na 4, walda a cikin wannan nau'in samfurin yana da rufaffiyar siffa mai tsari, kamar madauwari, polygonal, ko siffar layi mai sassa da yawa. Tsarin haɗin gwiwa na iya haɗawa da mahaɗin gindi, haɗin gwiwar cinya, ko rijiyoyin walda. Don irin wannan samfurin, hanyar da aka fi so ita ce amfani da iskar garkuwar coaxial da aka nuna a hoto na 2.
Hoto 4: Planar Enclosed Geometry Weld
Zaɓin garkuwar iskar gas don walƙiya da ke tattare da tsarin lissafi yana shafar inganci, inganci, da farashin samar da walda kai tsaye. Duk da haka, saboda bambancin kayan walda, zaɓin gas ɗin walda yana da rikitarwa a ainihin hanyoyin walda. Yana buƙatar cikakken la'akari da kayan walda, hanyoyin walda, wuraren walda, da sakamakon walda da ake so. Za a iya ƙayyade zaɓin mafi dacewa da iskar walda ta hanyar gwajin walda don cimma kyakkyawan sakamako na walda.
Laser Walda na Hannu
Nunin Bidiyo | Kallon Laser na Hannun Welding
Bidiyo 1 - Sanin Ƙari game da Abin da ke Hannun Laser Welder
Bidiyo2 - Welding Laser iri-iri don buƙatu daban-daban
Nasihar Laser Welder na Hannu
Akwai tambayoyi game da waldawar Laser na Hannu?
Lokacin aikawa: Mayu-19-2023