Umahluko phakathi kwe-SS304 kunye ne-SS316 Materials

Iintsimbi ze-SS316 ezingenazintsimbi zidla ngokusetyenziselwa iintsimbi ezifakwe kufutshane namachibi okanye iilwandle.I-SS304 zezona zixhobo zixhaphakileyo ngaphakathi okanye ngaphandle.
 
Njengamabakala asisiseko e-AISI yaseMelika, umahluko osebenzayo phakathi kwe-304 okanye i-316 kunye ne-304L okanye i-316L ngumxholo wekhabhoni.
Uluhlu lwekhabhoni luyi-0.08% ephezulu kwi-304 kunye ne-316 kunye ne-0.030% ephezulu kwiintlobo ze-304L kunye ne-316L.
Zonke ezinye iindidi ze-elementi ziyafana (uluhlu lwe-nickel lwe-304 yi-8.00-10.50% kunye ne-304L 8.00-12.00%).
Kukho iintsimbi ezimbini zaseYurophu zohlobo lwe-'304L', i-1.4306 kunye ne-1.4307.I-1.4307 ngowona mahluko uxhaphakileyo, ngaphandle kweJamani.I-1.4301 (304) kunye ne-1.4307 (304L) ineendlela zekhabhoni ze-0.07% eziphezulu kunye ne-0.030% ephezulu, ngokulandelanayo.Uluhlu lwe-chromium kunye ne-nickel ziyafana, i-nickel kuwo omabini amabanga anobuncinci be-8%.I-1.4306 ngokusisiseko ibakala lesiJamani kwaye ine-10% ubuncinci be-Ni.Oku kunciphisa umxholo we-ferrite wentsimbi kwaye ufumene ukuba kuyimfuneko kwiinkqubo ezithile zeekhemikhali.
Amabakala aseYurophu kwiintlobo ze-316 kunye ne-316L, i-1.4401 kunye ne-1.4404, ihambelana nazo zonke izinto ezine-carbon ranges ze-0.07% eziphezulu kwi-1.4401 kunye ne-0.030% ephezulu kwi-1.4404.Kukho neenguqu eziphezulu ze-Mo (2.5% ubuncinci be-Ni) ye-316 kunye ne-316L kwinkqubo ye-EN, i-1.4436 kunye ne-1.4432 ngokulandelanayo.Ukwenza nzima ngakumbi imicimbi, kukwakho nebakala 1.4435 elinenqanaba eliphezulu kwi-Mo (2.5% ubuncinane) nakwi-Ni (12.5% ​​ubuncinane).
 
Impembelelo yekhabhoni ekuxhathiseni umhlwa
 
Ikhabhoni esezantsi 'yantlukwano' (316L) yamiselwa njengezinye iindlela 'zemigangatho' (316) yoluhlu lwekhabhoni yodidi lokoyisa umngcipheko wokubola kwe-intercrystalline (ukubola kwe-weld), eyaqatshelwa njengengxaki kwiintsuku zokuqala zokusetyenziswa ezi zintsimbi.Oku kunokubangela ukuba intsimbi igcinwe kuluhlu lweqondo lobushushu ukusuka kuma-450 ukuya kuma-850°C kangangemizuzu emininzi, ngokuxhomekeke kwiqondo lobushushu elize emva koko livezwe kwiindawo ezinobundlongondlongo ezonakalisayo.Ukonakala emva koko kwenzeka ecaleni kwemida yeenkozo.
 
Ukuba inqanaba lekhabhoni lingaphantsi kwe-0.030% ke oku kuhlwa kwe-intercrystalline akwenzeki emva kokuvezwa kula maqondo obushushu, ngakumbi uhlobo lwamaxesha aqhele ukubonwa kwindawo echaphazeleke bubushushu bentsimbi kumacandelo 'angqindilili' entsimbi.
 
Impembelelo yenqanaba lekhabhoni kwi-weldability
 
Kukho imbono yokuba iintlobo zekhabhoni eziphantsi zilula ukudibanisa kuneentlobo zekhabhoni eziqhelekileyo.
 
Kubonakala ngathi akukho sizathu esicacileyo salokhu kwaye ukungafani mhlawumbi kuhambelana namandla aphantsi ohlobo lwekhabhoni ephantsi.Uhlobo oluphantsi lwekhabhoni lunokuba lula ukumila kunye nokwenza, olunokuthi luchaphazele amanqanaba oxinzelelo olushiyekileyo olushiye intsimbi emva kokuqulunqa kunye nokulungelelaniswa kwe-welding.Oku kunokukhokelela kwiindidi zekhabhoni 'esemgangathweni' ezifuna amandla angaphezulu ukuzibamba xa sele zifakelwe ukuwelda, kunye notyekelo lokubuyela umva ukuba ayibanjwanga ngokufanelekileyo endaweni.
 
I-welding consumables kuzo zombini iindidi zisekelwe kwi-carbon composition ephantsi, ukuphepha umngcipheko we-intercrystalline corrosion kwi-weld nugget eqiniweyo okanye ekusasazeni kwekhabhoni kumzali (ojikelezayo) isinyithi.
 
Izatifikethi ezimbini zeentsimbi ezisezantsi zekhabhoni
 
Iintsimbi eziveliswe ngokurhweba, zisebenzisa iindlela zentsimbi zangoku, zihlala ziveliswa njengohlobo lwekhabhoni ephantsi njengento eqhubekayo ngenxa yokuphuculwa kolawulo kwi-steelmaking yanamhlanje.Ngenxa yoko iimveliso zentsimbi ezigqityiweyo zikholisa ukunikezelwa kwimarike 'eziqinisekisiweyo ezimbini' kuzo zombini iziqendu zemigangatho njengoko zinokuthi ke zisetyenziselwe ulwakhiwo oluchaza naliphi na ibakala, ngaphakathi komgangatho othile.
 
304 Iintlobo
 
I-BS EN 10088-2 1.4301 / 1.4307 kumgangatho waseYurophu.
I-ASTM A240 304 / 304L OKANYE I-ASTM A240 / ASME SA240 304 / 304L kwimigangatho yenqanawa yoxinzelelo lwaseMelika.
316 Iintlobo
 
I-BS EN 10088-2 1.4401 / 1.4404 kumgangatho waseYurophu.
I-ASTM A240 316 / 316L OKANYE i-ASTM A240 / ASME SA240 316 / 316L, ukuya kwimigangatho yenqanawa yoxinzelelo lwaseMelika.

Ixesha lokuposa: Aug-19-2020