Ọdịiche a na-ahụkarị na ịgbado ọkụ Magnesium Alloy

(1) kristal mara mma

Magnesium nwere ebe mgbaze dị ala yana ịdị elu nke okpomọkụ. A chọrọ isi iyi ọkụ ịgbado ọkụ dị elu n'oge ịgbado ọkụ. Ebe weld na nso nso a na-enwe ike ikpo oke ọkụ, uto ọka, nkewa kristal na ihe ndị ọzọ, nke na-ebelata arụmọrụ nkwonkwo.

(2) Oxidation na evaporation

Magnesium na-agbakọta nke ukwuu ma na-ejikọta ya na oxygen. Ọ dị mfe ịmepụta MgO n'oge usoro ịgbado ọkụ. MgO nwere nnukwu agbaze (2 500 ℃) na njupụta dị elu (3. 2 g / cm-3), ọ dịkwa mfe ịmepụta obere flakes na weld. Inclusions siri ike slag ọ bụghị naanị na-egbochi guzobe weld, kamakwa belata arụmọrụ nke weld. N'ebe okpomọkụ nke ịgbado ọkụ dị elu, magnesium nwere ike jikọta ya na nitrogen na ikuku iji mepụta magnesium nitride. Magnesium nitride slag nsonye ga-emekwa ka mbelata na plasticity nke weld metal na-akawanye nkwonkwo arụmọrụ. Ebe na-esi ísì ụtọ nke magnesium adịghị elu (1100 ℃) na ọ dị mfe ịpụpụ n'okpuru nnukwu okpomọkụ nke arc.

(3) Na-ere ọkụ na daa akụkụ ndị dị mkpa

Mgbe ị na-agbado akụkụ ndị dị mkpa, n'ihi ebe mgbaze dị ala nke magnesium alloy na ebe mgbaze dị elu nke magnesium oxide, a naghị ejikọta ha abụọ n'ụzọ dị mfe, na-eme ka ọ sie ike ịhụ usoro ịgbaze nke eriri weld n'oge arụ ọrụ ịgbado ọkụ. Ka okpomọkụ na-ebili, agba nke ọdọ mmiri a wụrụ awụ adịghị agbanwe nke ọma, na-eme ka ọ na-agba ọkụ ma daa.

(4) Nchekasị okpomọkụ na mgbawa

Magnesium na magnesium alloys nwere ọnụ ọgụgụ dị elu dị elu nke mgbasawanye ọkụ, ihe dị ka okpukpu abụọ nke ígwè na 1 ugboro abụọ, ọ dị mfe ime ka nrụgide ịgbado ọkụ dị ịrịba ama na nrụrụ n'oge usoro ịgbado ọkụ. Magnesium na-etolite n'ụzọ dị mfe eutectic ebe mgbaze dị ala na ụfọdụ ihe ndị na-eme ihe (dị ka Cu, Al, Ni, wdg) (dị ka Mg Cu eutectic okpomọkụ nke 480 ℃, Mg Al eutectic okpomọkụ nke 430 ℃, Mg Ni eutectic okpomọkụ nke 508 ℃) , nke nwere oke okpomọkụ na-agbaji agbaji na nhazi dị mfe nke mgbawa ọkụ. Nnyocha achọpụtala na mgbe w (Zn)> 1%, ọ na-abawanye nrịkasi ọkụ ma nwee ike ibute mgbawa ịgbado ọkụ. Ịtinye w (Al) ≤ 10% na magnesium nwere ike imezi nha ọka nke weld wee kwalite weldability. Magnesium alloys nwere obere ego Th nwere ezigbo weldability na enweghị ọchịchọ ịgbawa.

(5) Stomata

A na-emepụta pores hydrogen ngwa ngwa n'oge ịgbado ọkụ magnesium, na solubility nke hydrogen na magnesium na-ebelata nke ọma site na ibelata okpomọkụ.

(6) Magnesium na alloys ya na-adịkarị mfe oxidation na combustion n'oge ịgbado ọkụ na ikuku gburugburu, na-achọ inert gas ma ọ bụ flux nchebe n'oge fusion ịgbado ọkụ ·