Nyocha nke Resistivity Eletriki n'ime igwe mgbado ọkụ ọkụ nke etiti ugboro ugboro

Eletriki resistivity bụ ihe dị oke mkpa n'ime igwe igwe ịgbado ọkụ na-agbanwe agbanwe ugboro ugboro, n'ihi na ọ na-ekpebi ikike nke ihe nwere ike iguzogide mgbaba ọkụ eletrik. Isiokwu a na-achọ inyocha echiche nke eletriki resistivity na mkpa ya na ọnọdụ nke ọrụ ịgbado ọkụ na-eji ọkara ugboro inverter igwe.

1. Ịghọta Mgbochi Eletrọnịkị: Igwe ọkụ eletrik, nke akara ρ (rho) na-egosi, bụ ihe onwunwe nke na-akọwapụta nguzogide ya na mgbaba ọkụ eletrik. A kọwapụtara ya dị ka oke nke mpaghara ọkụ eletrik etinyere n'ofe ihe na njupụta eletrik dị ugbu a. A na-atụkarị mgbagha na nkeji nke ohm-mita (Ω·m) ma ọ bụ ohm-centimeters (Ω·cm).
2. Pụtara nke Electric Resistivity na Spot Welding: Na ọkara ugboro inverter ntụpọ ịgbado ọkụ igwe, ịghọta eletriki resistivity nke workpiece ihe dị oké mkpa n'ihi na ọtụtụ ihe: a. Nhọrọ ihe: Ihe dị iche iche nwere ihe mgbochi eletrik dị iche iche, nke nwere ike imetụta usoro ịgbado ọkụ. Ịhọrọ ihe na resistivities dakọtara na-eme ka ọ dị ugbu a na-arụ ọrụ nke ọma na ọgbọ okpomọkụ kachasị mma n'oge ịgbado ọkụ. b. Heating Joule: Ịgbado ọkụ ntụpọ na-adabere na ntụgharị nke ike eletrik n'ime okpomọkụ site na ikpo ọkụ ọkụ. The resistivity nke workpiece ihe na-ekpebi ego nke okpomọkụ eme na ịgbado ọkụ ebe, ozugbo emetụta weld àgwà na ike. c. Nkesa Okpomọkụ: Mgbanwe dị na resistivity nwere ike iduga na-ekesa ọkụ na-abụghị otu n'oge ịgbado ọkụ. Ihe ndị nwere ihe mgbochi dị iche iche nwere ike igosi ikpo ọkụ na-enweghị isi, na-emetụta nha na ọdịdị nke weld nugget ma nwee ike imebi iguzosi ike n'ezi ihe nkwonkwo. d. Nguzogide kọntaktị: Igwe ọkụ eletrik na interface electrode-workpiece na-emetụta nguzogide kọntaktị. Ịkwụsị elu dị elu nwere ike ime ka mmụba kọntaktị dịkwuo elu, na-emetụta nnyefe ugbu a na ọgbọ okpomọkụ.
3. Ihe Ndị Na-emetụta Mgbochi Eletriki: Ọtụtụ ihe na-emetụta nguzogide eletriki nke ihe eji eme mgbado ọkụ ntụpọ: a. Ngwakọta ihe: Ngwakọta elementrị na ọdịnaya adịghị ọcha nke ihe ahụ na-emetụta nke ukwuu nguzogide ya. Ihe ndị nwere ọkwa adịghị ọcha dị elu na-egosipụtakarị resistivity dị elu. b. Okpomọkụ: Igwe ọkụ eletrik na-adabere na okpomọkụ, yana ọtụtụ ihe na-egosi mmụba nke resistivity ka okpomọkụ na-ebili. Ya mere, ọ dị mkpa ịtụle ọnọdụ okpomọkụ na-arụ ọrụ n'oge ịgbado ọkụ ntụpọ iji chọpụta nke ọma mmetụta resistivity. c. Ọdịdị ọka: Ọdịdị ọka na nhazi kristal nke ihe nwere ike imetụta nkwụsị eletrik ha. Ihe ndị mara mma na-egosipụtakarị resistivity dị ala karịa ihe ndị nwere ọka. d. Alloying Elements: Mgbakwunye nke ihe ndị na-emepụta ihe nwere ike ịgbanwe ihe mgbochi eletriki nke ihe. Ngwakọta alloy dị iche iche nwere ike ime ka ọkwa resistivity dị iche iche, na-emetụta usoro ịgbado ọkụ.

Ịghọta echiche nke eletriki resistivity na mkpa ọ dị na igwe igwe ịgbado ọkụ na-agbanwe agbanwe ugboro ugboro dị oke mkpa maka inweta ezigbo weld na arụmọrụ. Site n'ịtụle ihe mgbochi eletriki nke ihe ndị na-arụ ọrụ, ndị na-emepụta nwere ike ịhọrọ ihe kwesịrị ekwesị, na-achịkwa nkesa okpomọkụ, belata nguzogide kọntaktị, ma hụ na ọ na-aga nke ọma ugbu a n'oge usoro ịgbado ọkụ. Ihe ọmụma a na-eme ka nhazi na ịrụ ọrụ nke usoro ịgbado ọkụ ntụpọ, n'ikpeazụ na-eduga na welds a pụrụ ịdabere na ya na nke dị elu na ngwa ụlọ ọrụ dị iche iche.