Na ịgbado ọkụ laser, gas na-echebe ga-emetụta nhazi weld, ịdị mma weld, omimi weld na obosara weld. N'ọtụtụ ọnọdụ, ịfụ gas nchebe ga-enwe mmetụta dị mma na weld, ma ọ pụkwara iweta mmetụta ọjọọ.
1. Ịgba ọkụ ziri ezi n'ime gas na-echebe ga-echebe nke ọma na ọdọ mmiri weld iji belata ma ọ bụ ọbụna zere oxidation;
2. Ịfefe ziri ezi n'ime gas na-echebe nwere ike belata nhụsianya a na-emepụta na usoro ịgbado ọkụ;
3. The ziri ezi ịfụ n'ime nchebe gas nwere ike ime ka weld ọdọ mmiri solidification evenly gbasaa, mee weld akpụ edo na mara mma;
4. Ịfụ ọkụ nke ọma nke gas na-echebe nwere ike belata mmetụta nchebe nke metal vapop plume ma ọ bụ plasma ígwé ojii na laser, ma mee ka ọnụọgụ laser dị irè;
5. Ịfụ nke ọma nke gas nchebe nwere ike ibelata porosity nke weld nke ọma.
Ọ bụrụhaala na a na-ahọrọ ụdị gas, ikuku gas na ọnọdụ ịfụ ọkụ, enwere ike nweta mmetụta dị mma.
Otú ọ dị, iji gas nchebe eme ihe n'ụzọ na-ekwesịghị ekwesị nwekwara ike imetụta ịgbado ọkụ n'ụzọ dị njọ.
Mmetụta ọjọọ
1. Ịfụ gas nchebe na-ezighi ezi nwere ike ibute weld adịghị mma:
2. Ịhọrọ ụdị gas na-ezighị ezi nwere ike iduga na mgbawa na weld ma belata ihe eji arụ ọrụ nke weld;
3. Ịhọrọ na-ezighị ezi gas ịfụ eru eruba ọnụego nwere ike iduga ọzọ dị njọ weld oxidation (ma eruba ọnụego bụ oke ibu ma ọ bụ obere), na nwekwara ike ime ka weld ọdọ mmiri metal na-akpaghasị njọ site mpụga ike, na-akpata weld ida ma ọ bụ na-erughị eru ịkpụzi;
4. Ịhọrọ na-ezighị ezi gas ịfụ ụzọ ga-eduga ọdịda nke nchedo mmetụta nke weld ma ọ bụ ọbụna ihu ọma dịghị nchebe mmetụta ma ọ bụ na-enwe mmetụta ọjọọ na weld akpụ;
5. Ịfụ na gas na-echebe ga-enwe mmetụta ụfọdụ na omimi weld, karịsịa mgbe a na-agbanye efere ahụ dị mkpa, ọ ga-ebelata ịdị omimi nke weld.
Ụdị gas nchebe
Gasị nchekwa ịgbado ọkụ laser a na-ejikarị eme ihe bụ N2, Ar, He, onye njirimara anụ ahụ na kemịkal ya dị iche, yabụ mmetụta na weld dịkwa iche.
1. N2
Ike ionization nke N2 dị oke oke, dị elu karịa nke Ar na ala karịa nke Ya. The ionization ogo nke N2 bụ n'ozuzu n'okpuru omume nke laser, nke nwere ike mma ibelata guzobe nke plasma ígwé ojii na otú dịkwuo irè itinye n'ọrụ ọnụego nke laser.Nitrogen nwere ike na-emeghachi omume na aluminum alloy na carbon ígwè na a ụfọdụ okpomọkụ, na-emepụta nitride, nke ga-mma na brittleness nke weld, na ibelata siri ike, nke ga-enwe a oké oghom mmetụta na nkwonkwo na-eji carbon na-atụ aro na aluminom na-atụ aro ka aluminom na-eji aluminom eme ihe n'ihi na anyị na-atụ aro ka aluminom na-eji ígwè eji eme ihe na-eme ka ígwè na-eme ka aluminom. welds.
Nitrogen na-emepụta site na mmeghachi omume kemịkalụ nke nitrogen na igwe anaghị agba nchara nwere ike ime ka ike nke nkwonkwo weld dịkwuo mma, nke ga-eme ka ọ dịkwuo mma maka ịmepụta ihe eji arụ ọrụ nke weld, ya mere enwere ike iji nitrogen dị ka ihe nchebe mgbe ị na-agbado igwe anaghị agba nchara.
2. Ar
Ar ionization ume ikwu nke kacha nta, n'okpuru mmetụta nke laser ionization ogo dị elu, ọ dịghị mma ịchịkwa guzobe nke plasma ígwé ojii, nwere ike dị irè itinye n'ọrụ nke laser na-emepụta ụfọdụ mmetụta, ma Ar ọrụ dị nnọọ ala, ọ na-esiri ike meghachi omume na nkịtị ọla, na Ar na-eri adịghị elu, na mgbakwunye, na njupụta nke Ar bụ ibu, bụ uru na sink ka molten ka anyị nwere ike n'elu ọdọ mmiri anyị nwere ike na-echebe anyị. eji dị ka gas nchebe nkịtị.
3. Ọ
O nwere ndị kasị elu ionization ume, n'okpuru mmetụta nke laser ionization ogo dị ala, nwere ike nnọọ mma ịchịkwa guzobe nke plasma ígwé ojii, laser nwere ike na-arụ ọrụ nke ọma na metal, WeChat ọha nọmba: micro welder, ọrụ na Ọ bụ nnọọ ala, isi adịghị emeghachi omume na ọla, bụ ezigbo ịgbado ọkụ na-echebe gas, ma Ọ dị oke ọnụ, The gas na-adịghị eji maka uka mmepụta ngwaahịa, na nkà mmụta sayensị na-eji nke ukwuu.
Oge nzipu: Sep-01-2021
