Umgaqo osisiseko we ukufudumeza ukucima ukucima kunye nokuzeyisa kwe welds

Indlela yonyango yokushisa i-weld ifanelekile kwikhabhoni ephantsi kunye ne-alloy ephantsi yentsimbi edityanisiweyo yonyango lwe-weld ye-weld, kunye nomgaqo wayo osisiseko ngolu hlobo lulandelayo.

(1) Ukucokisa iinkozo zentsimbi edibeneyo. Ubushushu obuphezulu be-welding fusion yenza ukuba iinkozo ze-weld kunye ne-heat-affected zone coarser, ukunciphisa amandla kunye nokuqina kwayo. Emva kokuba ukufudumeza kwe-induction kusetyenziselwa ukunyusa ngokukhawuleza ubushushu kwiqondo lokushisa le-austenitizing, iinkozo ezintle zifunyenwe ngokucinywa ngokukhawuleza, okuphelisa i-grain coarsening ye-weld kunye nokuphucula ukusebenza kwayo.

(2) Sebenzisa ukucima ubushushu obushiyekileyo ukwenza ubushushu obuphantsi be-welding seam ukufudumeza ukucima ubushushu, ngokukhawuleza ukutshiza ukupholisa kwamanzi, xa i-welding seam ipholile ukuya kuma-200 ~ 300 ° C, yeka ukutshiza ukupholisa kwamanzi, ngeli xesha ubushushu bomthungo we-welding ibizwa ngokuba bubushushu bokuphelisa ukucima . I weld ke ipholiswe emoyeni ukwenzela ukuzibamba, kwaye ubushushu bokuzibamba buba yi 250 ~ 150°C. Xa i-weld ipholile ukusuka kwiqondo lokucima i-austenitizing ukuya kwi-200 ~ 300 ° C, isakhiwo esixutywe se-martensite kunye ne-austenite egciniweyo yenziwe. Xa ubushushu obuphantsi kwe-250 ~ 150 ° C, i-martensite kwi-weld ibola ukunciphisa ubunzima, ngelixa i-austenite egciniweyo iguqula ibe yi-bainite okanye i-martensite epholileyo, eyandisa ubunzima. Njengomphumo odibeneyo wokunyuka kunye nokuncipha, isinyithi se-weld sigcina amandla aphezulu kunye nokuqina okuhle.

Ngamafutshane, emva kokufudumeza ngokukhawuleza kunye ne-austenitizing kunye nokucima, i-grains ye-weld metal ihlanjululwa. Kwangaxeshanye, ubushushu bokuphelisa ukucima bulawulwa ukuze kugcinwe ukuqina okuhle kweweld. Emva kokushisa okuphantsi kweqondo lokushisa, kufunyenwe isakhiwo se-martensite esihle, ukwenzela ukuba i-weld ibe nobunzima obuphezulu kunye namandla aphezulu. Lo ngumgaqo osisiseko wokucima ukufudumeza kunye nokuzibamba kwe-welds.

Umgaqo osisiseko wokucima ukufudumala kwe-induction kunye nokuzibamba kwe-welds

Indlela yonyango yokushisa i-weld ifanelekile kwikhabhoni ephantsi kunye ne-alloy ephantsi yentsimbi edityanisiweyo yonyango lwe-weld ye-weld, kunye nomgaqo wayo osisiseko ngolu hlobo lulandelayo.

(1) Ukucokisa iinkozo zentsimbi edibeneyo. Ubushushu obuphezulu be-welding fusion yenza ukuba iinkozo ze-weld kunye ne-heat-affected zone coarser, ukunciphisa amandla kunye nokuqina kwayo. Emva kokuba ukufudumeza kwe-induction kusetyenziselwa ukunyusa ngokukhawuleza ubushushu kwiqondo lokushisa le-austenitizing, iinkozo ezintle zifunyenwe ngokucinywa ngokukhawuleza, okuphelisa i-grain coarsening ye-weld kunye nokuphucula ukusebenza kwayo.

(2) Sebenzisa ukucima ubushushu obushiyekileyo ukwenza ubushushu obuphantsi be-welding seam ukufudumeza ukucima ubushushu, ngokukhawuleza ukutshiza ukupholisa kwamanzi, xa i-welding seam ipholile ukuya kuma-200 ~ 300 ° C, yeka ukutshiza ukupholisa kwamanzi, ngeli xesha ubushushu bomthungo we-welding ibizwa ngokuba bubushushu bokuphelisa ukucima . I weld ke ipholiswe emoyeni ukwenzela ukuzibamba, kwaye ubushushu bokuzibamba buba yi 250 ~ 150°C. Xa i-weld ipholile ukusuka kwiqondo lokucima i-austenitizing ukuya kwi-200 ~ 300 ° C, isakhiwo esixutywe se-martensite kunye ne-austenite egciniweyo yenziwe. Xa ubushushu obuphantsi kwe-250 ~ 150 ° C, i-martensite kwi-weld ibola ukunciphisa ubunzima, ngelixa i-austenite egciniweyo iguqula ibe yi-bainite okanye i-martensite epholileyo, eyandisa ubunzima. Njengomphumo odibeneyo wokunyuka kunye nokuncipha, isinyithi se-weld sigcina amandla aphezulu kunye nokuqina okuhle.

Ngamafutshane, emva kokufudumeza ngokukhawuleza kunye ne-austenitizing kunye nokucima, i-grains ye-weld metal ihlanjululwa. Kwangaxeshanye, ubushushu bokuphelisa ukucima bulawulwa ukuze kugcinwe ukuqina okuhle kweweld. Emva kokushisa okuphantsi kweqondo lokushisa, kufunyenwe isakhiwo se-martensite esihle, ukwenzela ukuba i-weld ibe nobunzima obuphezulu kunye namandla aphezulu. Lo ngumgaqo osisiseko wokucima ukufudumeza kunye nokuzibamba kwe-welds.