Njikọ ọkpọkọ, ebe akụkụ abụọ ma ọ bụ karịa na-eji ngwakọta nke nkwonkwo welded, ma ọ bụ na-ezo aka n'akụkụ abụọ ma ọ bụ karịa jikọtara site na nkwonkwo ịgbado ọkụ, gụnyere welds, fusion zone na okpomọkụ emetụtara.

Mpaghara nkwonkwo welded

Mgbe dabara na metal na filler metal agbaze ngwa ngwa ọsọ Youyi kpụrụ mgbe obi jụrụ na solidification.Weld si na nkedo Ọdịdị nke mmiri mmiri metal kristal, keadighi rarii grains, nkewa, nzukọ adịghị oke.Otú ọ dị, n'ihi na obere weld ọdọ mmiri, ngwa ngwa jụrụ, nlezianya akara nke chemical mejupụtara, carbon, sọlfọ, phosphorus dị ala, ma site n'ịgbanwe na chemical mejupụtara nke weld alloying, o nwere ụfọdụ ego alloying ọcha, ya mere, arụmọrụ nke weld metal bụghị a nnukwu nsogbu, izute arụmọrụ chọrọ, karịsịa ike mfe iru.

Mpaghara ngwakọta

Mpaghara agbaze na akụkụ mgbanwe n'etiti mpaghara anaghị agbaze.Ngwakọta kemịkalụ nke mpaghara ngwakọta na-enweghị oke anụ ahụ na-abụkarị nnukwu anụ ahụ siri ike siri ike ma ọ bụ anụ ahụ na-ekpo oke ọkụ.Ịrụ ọrụ nke nkwonkwo welded na-abụkarị nke kachasị njọ.Fusion mpaghara na okpomọkụ emetụta mpaghara nke ekpo oke ọkụ mpaghara (ma ọ bụ quench mpaghara) bụ kasị njọ nke n'ibu Njirimara nke welded nkwonkwo nke na-adịghị ike, ga-akpa ike na-emetụta àgwà nke welded nkwonkwo.

Mpaghara okpomọkụ metụtara

Ọkụ dị elu weld mpaghara microstructure na akụrụngwa kpatara mgbanwe na mpaghara ahụ.Obere-carbon ígwè okpomọkụ-emetụta mpaghara nwere ike kewaa n'ime overheated ebe, na akụkụ nke frasi mgbanwe mpaghara normalizing ebe.

(1) Mpaghara mpaghara okpomoku kacha kpo oku karịa 1100℃, ọka na-esighị ike, na ọbụna anụ ahụ na-ekpo oke ọkụ, nke a na-akpọ mpaghara superheat.ductility na siri ike belatara nke ukwuu ekpo oke ọkụ mpaghara, okpomọkụ metụtara mpaghara bụ akụkụ kasị njọ nke n'ibu Njirimara.

(2) Okpomọkụ kacha ọkụ sitere na mpaghara mpaghara Ac3 ruo 1100℃, ikuku jụrụ ịgbado ọkụ grains ga-adị nta mgbe normalizing nzukọ a na-akpọ normalizing ebe.Mma n'ibu Njirimara nke normalizing mpaghara.

(3) akụkụ nke mpaghara mgbanwe okpomọkụ kachasị elu na mpaghara site na Ac1 Ac3, naanị akụkụ nke mgbanwe usoro nhazi, nke a na-akpọ mpaghara mgbanwe akụkụ akụkụ.Ebe a ọka na-adịghị arụ ọrụ adịghịkwa mma.N'oge echichi ịgbado ọkụ, ịgbado ọkụ usoro ọzọ mgbe.Njikọ okpomọkụ dị elu nke welded bụ metal matriks na-ekpo ọkụ na mpaghara ahụ yana ahụ igwe na-edozi ahụ nke ọla gbazere ka ọ na-eme ka ọdịdị ahụ gbazere sie ike.Dabere na microstructure na ihe onwunwe nke akụkụ dị iche iche nke nkwonkwo welded nwere ike kewaa n'ime akụkụ atọ.