Mmetụta nke gas nchebe na ịgbado ọkụ laser
Laser welder ejiri aka
Ọdịnaya nke isi:
▶ Kedu ihe Gas Shield Right ga-enwetara gị?
▶ Ụdị gas nchekwa dị iche iche
▶ Ụzọ abụọ esi eji gas nchebe
▶ Kedu ka esi ahọrọ gas nchekwa nke ọma?
Mgbado ọkụ laser ejiri aka
Mmetụta dị mma nke gas Shield Kwesịrị ekwesị
Na ịgbado ọkụ laser, nhọrọ nke gas nchebe nwere ike inwe mmetụta dị ukwuu na nhazi, ịdị mma, omimi, na obosara nke eriri weld. N'ọtụtụ ọnọdụ, iwebata gas nchebe nwere mmetụta dị mma na eriri weld. Otú ọ dị, ọ pụkwara inwe mmetụta ọjọọ. Mmetụta dị mma nke iji gas nchebe ziri ezi bụ ndị a:
1. Nchedo dị mma nke ọdọ mmiri weld
Iwebata gas na-echebe nke ọma nwere ike chebe ọdọ mmiri weld nke ọma pụọ na oxidation ma ọ bụ ọbụna gbochie oxidation kpamkpam.
2. Mbelata spattering
Ịwebata gas nchebe nke ọma nwere ike ibelata nsị n'oge usoro ịgbado ọkụ.
3. Uniform guzobe nke weld onuete
Ntinye kwesịrị ekwesị nke gas nchebe na-akwalite ọbụna ịgbasa ọdọ mmiri weld n'oge siri ike, na-eme ka akwa akwa akwa na-adọrọ adọrọ na mma.
4. Mmụba ojiji laser
Ịwebata gas nchebe nke ọma nwere ike belata mmetụta nchebe nke igwe vapor metal ma ọ bụ ígwé ojii plasma na laser, si otú ahụ na-abawanye arụmọrụ laser.
5. Mbelata weld porosity
Ịwebata gas nchebe nke ọma nwere ike belata nguzobe nke pores gas na eriri weld. Site n'ịhọrọ ụdị gas kwesịrị ekwesị, ọnụego ịgbasa, na usoro mmeghe, enwere ike nweta nsonaazụ dị mma.
Agbanyeghị,
Iji gas nchebe eme ihe n'ụzọ na-ezighi ezi nwere ike inwe mmetụta na-emebi emebi na ịgbado ọkụ. Mmetụta ọjọọ gụnyere:
1. Mmebi nke eriri weld
Iwebata gas nchebe na-ezighi ezi nwere ike ime ka ọ ghara ịdị mma weld.
2. Ịgbawa ma belata n'ibu Njirimara
Ịhọrọ ụdị gas na-ezighị ezi nwere ike iduga weld seam cracking na ibelata arụmọrụ n'ibu.
3. Mmụba oxidation ma ọ bụ nnyonye anya
Ịhọrọ ọnụego ikuku gas na-ezighi ezi, ma ọ dị oke elu ma ọ bụ dị ala, nwere ike iduga ụbara oxidation nke eriri weld. Ọ nwekwara ike ịkpata ọgba aghara siri ike na ọla a wụrụ awụ, na-ebute ọdịda ma ọ bụ guzobe nke ọma nke eriri weld.
4. Nchekwa ezughị oke ma ọ bụ mmetụta ọjọọ
Ịhọrọ usoro mmeghe gas na-ezighị ezi nwere ike iduga na nchebe zuru oke nke weld seam ma ọ bụ ọbụna nwee mmetụta na-adịghị mma na nhazi nke weld seam.
5. Mmetụta na weld omimi
Ntinye nke gas na-echebe nwere ike inwe mmetụta ụfọdụ na omimi nke weld, karịsịa na ịgbado ọkụ dị mkpa, ebe ọ na-eme ka ibelata ịdị omimi nke weld.
Mgbado ọkụ laser ejiri aka
Ụdị nke gas na-echebe
Gasị nchebe a na-ejikarị na ịgbado ọkụ laser bụ nitrogen (N2), argon (Ar), na helium (He). Gasị ndị a nwere ihe anụ ahụ na kemịkal dị iche iche, nke na-ebute mmetụta dị iche iche na eriri weld.
1. Nitrogen (N2)
N2 nwere ike ionization na-agafeghị oke, dị elu karịa Ar na ala karịa Ya. N'okpuru ọrụ nke laser, ọ ionizes na a agafeghị oke ogo, n'ụzọ dị irè na-ebelata nguzobe nke plasma ígwé ojii na-amụba ojiji nke laser. Otú ọ dị, nitrogen nwere ike imeghachi omume kemịkal na aluminom alloys na carbon steel na ụfọdụ okpomọkụ, na-akpụ nitrides. Nke a nwere ike dịkwuo brittleness na ibelata ike nke weld onuete, na-adịghị mma na-emetụta ya n'ibu Njirimara. Ya mere, a naghị atụ aro iji nitrogen dị ka ihe nchebe maka aluminum alloys na carbon steel welds. N'aka nke ọzọ, nitrogen nwere ike imeghachi ya na igwe anaghị agba nchara, na-eme nitrides na-eme ka ike nke nkwonkwo weld dịkwuo ike. Ya mere, enwere ike iji nitrogen dị ka gas nchebe maka ịgbado ọkụ igwe anaghị agba nchara.
2. Argon gas (Ar)
Argon gas nwere ike ionization dịtụ ala, na-ebute ogo ionization dị elu n'okpuru ọrụ laser. Nke a adịghị mma maka ịchịkwa nhazi nke ígwé ojii plasma ma nwee ike inwe mmetụta ụfọdụ na ojiji nke lasers dị irè. Agbanyeghị, argon nwere mmeghachi omume dị ala ma o yighị ka ọ ga-enweta mmeghachi omume kemịkalụ na ọla ndị nkịtị. Ọzọkwa, argon na-akwụ ụgwọ. Ọzọkwa, n'ihi njupụta ya dị elu, argon na-agbada n'elu ọdọ mmiri weld, na-enye nchebe ka mma maka ọdọ mmiri weld. Ya mere, enwere ike iji ya dị ka gas na-echebe ya.
3. Helium gas (He)
Helium gas nwere ike ionization kachasị elu, na-eduga n'ogo dị ala nke ionization n'okpuru ọrụ laser. Ọ na-enye ohere maka njikwa nke ọma nke nhazi igwe ojii plasma, na lasers nwere ike iji ọla mee ihe nke ọma. Ọzọkwa, helium nwere mmeghachi omume dị ala ma ọ naghị anabata mmeghachi omume kemịkalụ na ọla, na-eme ka ọ bụrụ ezigbo gas maka nchekwa weld. Otú ọ dị, ọnụ ahịa helium dị elu, n'ihi ya, a naghị eji ya eme ihe n'ọtụtụ ngwaahịa. A na-arụkarị ya n'ọrụ na nyocha sayensị ma ọ bụ maka ngwaahịa agbakwunyere ọnụ ahịa dị elu.
Mgbado ọkụ laser ejiri aka
Ụzọ ewebata gas nchekwa
Ka ọ dị ugbu a, e nwere ụzọ abụọ bụ isi maka iwebata gas mkpuchi: ikuku na-apụ apụ na ikuku mkpuchi coaxial, dị ka egosiri na Figure 1 na Figure 2, n'otu n'otu.
Ọnụọgụ 1: Gas na-agbapụ n'akụkụ axis
Ọgụgụ 2: Coaxial Shielding Gas
Nhọrọ n'etiti ụzọ abụọ ịfụfụ na-adabere n'echiche dị iche iche. N'ozuzu, a na-atụ aro ka iji ụzọ ikuku na-apụ apụ n'akụkụ axis maka ikpuchi gas.
Mgbado ọkụ laser ejiri aka
Ụkpụrụ maka ịhọrọ ụzọ ewebata gas nchekwa
Mbụ, ọ dị mkpa ịkọwapụta na okwu "oxidation" nke welds bụ okwu ọnụ. Na tiori, ọ na-ezo aka n'ịkwalite ogo weld n'ihi mmeghachi omume kemịkalụ n'etiti igwe weld na ihe ndị na-emerụ ahụ dị na ikuku, dị ka oxygen, nitrogen, na hydrogen.
Mgbochi weld oxidation gụnyere ibelata ma ọ bụ zere kọntaktị n'etiti ihe ndị a na-emerụ ahụ yana metal weld dị elu. Ọnọdụ okpomọkụ a dị elu na-agụnye ọ bụghị naanị ọla ọdọ mmiri a wụrụ awụ, kamakwa oge niile site na mgbe a na-agbaze metal weld ruo mgbe ọdọ mmiri ahụ siri ike na okpomọkụ ya na-ebelata n'okpuru ebe ụfọdụ.
Dịka ọmụmaatụ, na ịgbado ọkụ nke alloys titanium, mgbe okpomọkụ dị n'elu 300 Celsius C, ngwa ngwa hydrogen absorption na-apụta; n'elu 450 Celsius C, ngwa ngwa ikuku oxygen na-eme; na n'elu 600 Celsius C, ntinye nitrogen ngwa ngwa na-eme. Ya mere, a chọrọ nchebe dị irè maka titanium alloy weld n'oge oge mgbe ọ na-eme ka ọ sie ike na okpomọkụ ya na-ebelata n'okpuru 300 Celsius C iji gbochie oxidation. Dabere na nkọwa ahụ dị n'elu, o doro anya na ikuku mkpuchi nke a na-agbapụ kwesịrị inye nchebe ọ bụghị naanị na ọdọ mmiri weld n'oge kwesịrị ekwesị kamakwa na mpaghara nke siri ike nke weld. N'ihi ya, a na-amasịkarị usoro ịgbapụ n'akụkụ axis nke egosiri na foto 1 n'ihi na ọ na-enye nchebe dị ukwuu ma e jiri ya tụnyere usoro mkpuchi coaxial nke egosiri na foto 2, karịsịa maka mpaghara siri ike nke weld. Otú ọ dị, maka ụfọdụ ngwaahịa a kapịrị ọnụ, ọ dị mkpa ka ịhọrọ usoro ahụ dabere na nhazi ngwaahịa na nhazi nkwonkwo.
Mgbado ọkụ laser ejiri aka
Nhọrọ akọwapụtara nke usoro ewebata gas nchekwa
1. Weld kwụ ọtọ
Ọ bụrụ na udi weld nke ngwaahịa ahụ kwụ ọtọ, dị ka egosiri na foto 3, na nhazi nkwonkwo gụnyere nkwonkwo ụkwụ, nkwonkwo ụkwụ, welds fillet, ma ọ bụ akwa welds, usoro kachasị mma maka ụdị ngwaahịa a bụ usoro ịgbapụ n'akụkụ axis nke egosiri na ya. Onyonyo 1.
Ọgụgụ 3: Weld kwụ ọtọ
2. Planar gbachibidoro geometry weld
Dịka e gosiri na eserese 4, weld dị n'ụdị ngwaahịa a nwere ọdịdị atụmatụ mechiri emechi, dịka okirikiri, polygonal, ma ọ bụ udi ahịrị ọtụtụ akụkụ. Nhazi nkwonkwo nwere ike ịgụnye nkwonkwo butt, nkwonkwo ụkwụ, ma ọ bụ ikpo welds. Maka ụdị ngwaahịa a, usoro kachasị mma bụ iji ikuku mkpuchi coaxial nke egosiri na foto 2.
Onyonyo 4: Planar Enclosed Geometry Weld
Nhọrọ nke gas mkpuchi maka weld geometry mechiri emechi na-emetụta ịdịmma, arụmọrụ na ọnụ ahịa nrụpụta ịgbado ọkụ ozugbo. Otú ọ dị, n'ihi ihe dị iche iche nke ịgbado ọkụ, nhọrọ nke ịgbado ọkụ gas dị mgbagwoju anya na n'ezie ịgbado ọkụ usoro. Ọ na-achọ nleba anya nke ọma maka ihe ịgbado ọkụ, ụzọ ịgbado ọkụ, ọnọdụ ịgbado ọkụ, na nsonaazụ ịgbado ọkụ chọrọ. Enwere ike ikpebi nhọrọ nke gas ịgbado ọkụ kachasị mma site na ule ịgbado ọkụ iji nweta nsonaazụ ịgbado ọkụ kacha mma.
Mgbado ọkụ laser ejiri aka
Ngosipụta vidiyo | Ilere anya maka ịgbado ọkụ laser ejiri aka
Vidiyo 1 - Marakwuo maka ihe bụ Welder Laser Handheld
Video2 - Vasatail Laser Welding for iche iche chọrọ
Igwe ọkụ laser ejiri aka akwadoro
Ajụjụ ọ bụla gbasara ịgbado ọkụ laser ejiri aka?
Oge nzipu: Mee-19-2023