Ainihin ka’idar induction dumama quenching da son kai na welds

Hanyar kula da zafi mai walƙiya ta dace da ƙarancin carbon da ƙaramin ƙarfe mai walƙiya bututun walda mai zafi, kuma ƙa’idar sa ta asali shine kamar haka.

(1) Tace hatsin karfen weld. Babban zafin jiki na haɗin walda yana sa hatsin walda da yankin da zafi ya shafa ya yi ƙarfi, yana rage ƙarfinsa da taurinsa. Bayan an yi amfani da dumama shigarwa don ɗaga zafin jiki da sauri zuwa zafin jiki na austenitizing, ana samun kyakkyawan hatsi ta hanyar kashewa da sauri, wanda ke kawar da ƙwanƙwasa ƙwayar walda kuma yana haɓaka aikin sa.

(2) Yi amfani da quenching saura zafi don yin low-zazzabi tempering waldi kabu dumama zuwa quenching zafin jiki, nan da nan fesa ruwa sanyaya, a lõkacin da waldi kabu ne sanyaya zuwa 200 ~ 300 ° C, daina spraying ruwa sanyaya, a wannan lokaci da waldi kabu zafin jiki. ana kiranta da quenching termination zafin jiki . Ana sanyaya walda a cikin iska don zafin kai, kuma zafin zafin kai shine 250 ~ 150 ° C. Lokacin da aka sanyaya weld daga zafin jiki na austenitizing zuwa 200 ~ 300 ° C, an kafa tsarin gauraye na martensite da austenite da aka riƙe. Lokacin da aka yi zafi a cikin ƙananan zafin jiki na 250 ~ 150 ° C, martensite a cikin weld ya rushe don rage taurin, yayin da austenite da aka riƙe ya ​​canza zuwa bainite ko martensite mai zafi, wanda ke ƙara taurin. Sakamakon haɗakar tasirin wannan haɓaka da raguwa, ƙarfe na walda yana kula da ƙarfi mai ƙarfi da ƙarfi mai kyau.

A takaice, bayan saurin dumama da austenitizing da quenching, ana tace hatsin ƙarfe na walda. A lokaci guda, ana sarrafa zafin ƙarewar quenching don kula da kyakkyawan taurin walda. Bayan ƙananan zafin jiki mai zafi, ana samun kyakkyawan tsarin martensite mai zafi, don haka weld yana da ƙarfi da ƙarfi. Wannan shine ainihin ƙa’idar shigar da dumama quenching da zafin kai na welds.

Ainihin ka’ida na induction dumama quenching da kai tempering na welds

Hanyar kula da zafi mai walƙiya ta dace da ƙarancin carbon da ƙaramin ƙarfe mai walƙiya bututun walda mai zafi, kuma ƙa’idar sa ta asali shine kamar haka.

(1) Tace hatsin karfen weld. Babban zafin jiki na haɗin walda yana sa hatsin walda da yankin da zafi ya shafa ya yi ƙarfi, yana rage ƙarfinsa da taurinsa. Bayan an yi amfani da dumama shigarwa don ɗaga zafin jiki da sauri zuwa zafin jiki na austenitizing, ana samun kyakkyawan hatsi ta hanyar kashewa da sauri, wanda ke kawar da ƙwanƙwasa ƙwayar walda kuma yana haɓaka aikin sa.

(2) Yi amfani da quenching saura zafi don yin low-zazzabi tempering waldi kabu dumama zuwa quenching zafin jiki, nan da nan fesa ruwa sanyaya, a lõkacin da waldi kabu ne sanyaya zuwa 200 ~ 300 ° C, daina spraying ruwa sanyaya, a wannan lokaci da waldi kabu zafin jiki. ana kiranta da quenching termination zafin jiki . Ana sanyaya walda a cikin iska don zafin kai, kuma zafin zafin kai shine 250 ~ 150 ° C. Lokacin da aka sanyaya weld daga zafin jiki na austenitizing zuwa 200 ~ 300 ° C, an kafa tsarin gauraye na martensite da austenite da aka riƙe. Lokacin da aka yi zafi a cikin ƙananan zafin jiki na 250 ~ 150 ° C, martensite a cikin weld ya rushe don rage taurin, yayin da austenite da aka riƙe ya ​​canza zuwa bainite ko martensite mai zafi, wanda ke ƙara taurin. Sakamakon haɗakar tasirin wannan haɓaka da raguwa, ƙarfe na walda yana kula da ƙarfi mai ƙarfi da ƙarfi mai kyau.

A takaice, bayan saurin dumama da austenitizing da quenching, ana tace hatsin ƙarfe na walda. A lokaci guda, ana sarrafa zafin ƙarewar quenching don kula da kyakkyawan taurin walda. Bayan ƙananan zafin jiki mai zafi, ana samun kyakkyawan tsarin martensite mai zafi, don haka weld yana da ƙarfi da ƙarfi. Wannan shine ainihin ƙa’idar shigar da dumama quenching da zafin kai na welds.