I-ASTM A192 (I-ASME SA192Umbhobho wentsimbi () ngumbhobho wentsimbi yekhabhoni ongenamthungo osetyenziswa kwiindawo ezinobushushu obuphezulu kunye noxinzelelo oluphezulu kwaye usetyenziswa kakhulu kwiibhoyila kunye nezixhobo zokutshintshiselana nobushushu.
Ububanzi obungaphandle: 1/2″ – 7″ (12.7 mm – 177.8 mm);
Ubukhulu bodonga: 0.085″ – 1.000″ (2.2 mm – 25.4 mm);
Ezinye iisayizi zombhobho wentsimbi nazo zingabonelelwa njengoko kufuneka, ukuba zonke ezinye iimfuno ze-A192 ziyafezekiswa.
I-ASTM A192 yenziwe kusetyenziswa inkqubo engenamthungo kwaye igqitywa ngobushushu okanye ngokubandayo njengoko kufuneka;
Kwakhona, ukuchongwa kombhobho wentsimbi kufanele kubonise ukuba umbhobho wentsimbi ugqityiwe ushushu okanye uvaliwe kubanda.
Ukugqiba okushushu: Ibhekisa kwinkqubo yokugqiba imilinganiselo yokugqibela yetyhubhu yentsimbi ishushu. Emva kokuba ityhubhu yentsimbi idlule kwinkqubo yokucubungula eshushu efana nokuqengqeleka okushushu okanye ukutsalwa okushushu, ayiqhubeki isenziwa ibanda. Iityhubhu zentsimbi ezigqityiweyo zinobunzima obungcono kunye nokuguquguquka kodwa zinobunzima obukhulu.
Igqityiwe kubanda: Umbhobho wentsimbi ucutshungulwa ukuya kubukhulu bawo bokugqibela ngeenkqubo zokusebenza ezibandayo ezifana nokuqengqeleka okubandayo okanye ukutsalwa okubandayo kubushushu begumbi. Imibhobho yentsimbi egqityiweyo ebandayo inomlinganiselo ochanekileyo kunye nomphezulu ogudileyo kodwa inokuncama ukuqina okuthile.
Iityhubhu zentsimbi ezingenamthungo ezigqityiweyo zishushu azidingi nyango lobushushu.
Iityhubhu zentsimbi ezingenamthungo ezigqityiweyo ebandayo zinyangwa ngobushushu kumaqondo obushushu angama-650°C okanye ngaphezulu emva konyango lokugqibela lokubanda.
| Umgangatho | C | Mn | P | S | Si |
| I-ASTM A192 | 0.06-0.18% | 0.27-0.63% | Ubuninzi be-0.035% | Ubuninzi be-0.035% | Ubuninzi be-0.25% |
I-ASTM A192 ayivumeli ukongezwa kwezinye izinto kwi-chemical composition.
| Tensile strength | Unikeze Amandla | Ukwandiswa | Uvavanyo lokuTyatya | Uvavanyo lokuvutha |
| umzuzu | umzuzu | kwi-2 intshi okanye i-50 mm, umzuzu | ||
| 47 ksi [325 MPa] | 26 ksi [180 MPa] | 35% | Jonga i-ASTM A450, iCandelo 19 | Jonga i-ASTM A450, iCandelo 21 |
Ngaphandle kokuba kuchazwe ngenye indlela kwi-ASTM A192, izixhobo ezinikezelwe phantsi kwale nkcazelo ziya kuhambelana neemfuno ezifanelekileyo zeI-ASTM A450/A450M.
Ukuqina kweRockwell: 77HRBW.
Kwimibhobho yentsimbi enobukhulu bodonga obungaphantsi kwe-0.2" [5.1 mm].
Ubunzima bukaBrinell: 137HBW.
Ubukhulu bodonga lombhobho wentsimbi obuyi-0.2" [5.1 mm] nangaphezulu.
Ukuze ufumane iimfuno ezithile zokusebenza, jonga i-ASTM A450, iNqaku 23.
· Ukuphindaphinda: Umbhobho ngamnye wentsimbi uvavanywa uxinzelelo lwe-hydrostatic.
· Ixesha: Gcina uxinzelelo oluncinci ubuncinane imizuzwana emi-5.
· Ixabiso loxinzelelo lwamanzi: Libalwe kusetyenziswa le fomyula ilandelayo. Qaphela iyunithi.
Iiyunithi ze-intshi - iPonti: P = 32000 t/D
Iiyunithi ze-SI: P = 220.6t/D
P = uxinzelelo lovavanyo lwe-hydrostatic, i-psi okanye i-MPa;
t = ubukhulu bodonga obuchaziweyo, ngaphakathi okanye mm;
D = ububanzi obungaphandle obuchaziweyo, ngaphakathi okanye mm.
· Isiphumo: Ukuba akukho kuvuza kwimibhobho, uvavanyo luthathwa njengoluphumeleleyo.
Enye indlela yokuvavanya ngaphandle kokusebenzisa i-hydrostatic test inokwenzeka ngovavanyo olufanelekileyo olungatshabalalisiyo.
Nangona kunjalo, umgangatho awuchazi ukuba yeyiphi indlela yokuvavanya engonakalisiyo enokusetyenziswa.
Iityhubhu xa zifakwe kwibhoyila mazime zinwebeka kwaye ziqine ngaphandle kokubonisa iintanda okanye iziphene. Iityhubhu zeSuperheater xa zilungiswe kakuhle mazime zonke iinkqubo zokubumba, ukuwelda, kunye nokugoba ezifunekayo ekusetyenzisweni ngaphandle kokwenza iziphene.
Intsimbi yeBotopngumvelisi kunye nomthengisi wemibhobho yentsimbi yekhabhoni edityanisiweyo ekumgangatho ophezulu evela eTshayina, kwaye ukwangumthengisi wemibhobho yentsimbi engenamthungo, ekunika uluhlu olubanzi lwezisombululo zemibhobho yentsimbi!
Qhagamshelana nathiukuze ufumane isicatshulwa esivela kumthengisi wempahla yentsimbi engenamthungo waseTshayina.
