I-JIS G 3444: Iityhubhu zentsimbi yekhabhoni zesakhiwo ngokubanzi.
Icacisa iimfuno zemibhobho yentsimbi yekhabhoni esetyenziswa kubunjineli bokwakha, njengeenqaba zentsimbi, i-scaffolding, ii-foundation piles, ii-foundation piles, kunye nee-anti-slip piles.
I-STK 400umbhobho wentsimbi yenye yezona ntlobo zixhaphakileyo, eneempawu zoomatshini zeamandla okutsalwa aphantsi angama-400 MPakunyeamandla amancinci okuvelisa angama-235 MPa. Amandla ayo alungileyo okwakha kunye nokuqina kwayoyenza ukuba ifaneleke kwiintlobo ngeentlobo zezicelo.
Ngokwe-tensile strength encinci, umbhobho wentsimbi wahlulwe waba ziiklasi ezi-5, ezizezi:
I-STK 290, STK 400, STK 490, STK 500, STK 540.
Injongo ngokubanzi Ububanzi bangaphandle: 21.7-1016.0mm;
Iinqwaba zesiseko kunye neenqwaba zokunciphisa ukudilika komhlaba OD: ngaphantsi kwe-318.5mm.
| Uphawu lwebanga | Uphawu lwenkqubo yokuvelisa | |
| Inkqubo yokuvelisa imibhobho | Indlela yokugqiba | |
| I-STK 290 | Ingenamthungo: S Ukumelana kombane okudibeneyo: E I-butt welded: B I-arc ezenzekelayo edibeneyo: A | Igqityiwe ngobushushu: H Igqityiwe ngokubandayo: C Njengoko ukumelana nombane kudityanisiwe: G |
| I-STK 400 | ||
| I-STK 490 | ||
| I-STK 500 | ||
| I-STK 540 | ||
Iityhubhu maziveliswe ngokudibanisa indlela yokwenza iityhubhu kunye nendlela yokugqiba ebonisiweyo.
Ngokukodwa, zinokuhlulwahlulwa zibe ziintlobo ezisixhenxe ezilandelayo, ngoko ke khetha uhlobo olufanelekileyo ngokweemfuno ezahlukeneyo:
1) Ityhubhu yentsimbi engenamthungo egqityiweyo eshushu: -SH
2) Ityhubhu yentsimbi engenamthungo egqityiweyo ebandayo: -SC
3) Njengoko ityhubhu yentsimbi edibeneyo yokumelana nombane: -EG
4) Ityhubhu yentsimbi edityanisiweyo eshushu enokuxhathisa umbane: -EH
5) Ityhubhu yentsimbi edityanisiweyo yokumelana nombane egqityiweyo kubanda: -EC
6) Iityhubhu zentsimbi ezidityaniswe ngeempundu: -B
7) Iityhubhu zentsimbi eziwelsiweyo ze-arc ezizenzekelayo: -A
| Ukwenziwa kweeKhemikhalia% | |||||
| Uphawu lwebanga | C (iKhabhoni) | I-Si (iSilicon) | I-Mn (iManganese) | I-P (iPhosphorus) | S (Isalfure) |
| ubuninzi | ubuninzi | ubuninzi | ubuninzi | ||
| I-STK 400 | 0.25 | — | — | 0.040 | 0.040 |
| aIzinto ze-alloy ezingabandakanywanga kule theyibhile kunye nezinto eziboniswe ngo-“—” zingongezwa xa kuyimfuneko. | |||||
I-STK 400yintsimbi enekhabhoni ephantsi enokudityaniswa kakuhle kunye nokusebenza kakuhle kwizicelo zesakhiwo ezifuna ukudityaniswa. I-phosphorus kunye nesalfure zilawulwa kumanqanaba aphantsi ukunceda ukugcina ukuqina kunye nokusebenza kakuhle kwezinto. Nangona amaxabiso athile e-silicon kunye ne-manganese enganikwanga, anokulungiswa ngaphakathi kwemida evumelekileyo ukuze kuphuculwe iipropati zentsimbi ngakumbi.
Amandla okuThamba kunye noXinzelelo lweNqanaba lokuKhuthaza okanye ubungqina
Amandla okutsalwa kwe-weld asebenza kwiityhubhu eziweldiweyo ze-arc ezizenzekelayo. Yinkqubo yokuwelda ye-SAW.
| Uphawu lwebanga | Tensile strength | Ingongoma yokukhupha okanye uxinzelelo lobungqina | Amandla okuxinana kwi-weld |
| N/mm² (MPA) | N/mm² (MPA) | N/mm² (MPA) | |
| umzuzu | umzuzu | umzuzu | |
| I-STK 400 | 400 | 235 | 400 |
Ukwandiswa kweJIS G 3444
Ukwandiswa okuhambelana nendlela yokwenza iityhubhu kuboniswe kwiTheyibhile 4.
Nangona kunjalo, xa uvavanyo lokutsalwa lwenziwa kwiTest Piece No. 12 okanye kwiTest Piece No. 5 ethathwe kwityhubhu engaphantsi kwe-8 mm ubukhulu bodonga, ubude buya kuhambelana neTheyibhile 5.
Kubushushu begumbi (5 °C ukuya kwi-35 °C), beka isampuli phakathi kweepleyiti ezimbini ezisicaba uze ucinezele ngokuqinileyo ukuze zicabathe kude kube ngumgama ongu-H ≤ 2/3D phakathi kweepleyiti, uze ujonge ukuba azinazo na iintanda kwisampuli.
Kubushushu begumbi (5 °C ukuya kwi-35 °C), goba isampuli ijikeleze isilinda kwi-engile yokugoba encinci ye-90 ° kunye nerediyasi yangaphakathi ephezulu engadluli kwi-6D kwaye ujonge isampuli ukuba ayinazimfanta.
Uvavanyo olusebenzisa amanzi, uvavanyo olungonakalisiyo lwee-welds, okanye olunye uvavanyo luya kuvunyelwana kwangaphambili ngeemfuno ezifanelekileyo.
Ukunyamezelana kobubanzi bangaphandle
Ukunyamezelana koBungqingqwa bodonga
Ukunyamezela Ubude
Ubude ≥ ubude obuchaziweyo
Imiphezulu yangaphakathi neyangaphandle yombhobho wentsimbi mayibe bushelelezi kwaye ingabi naziphene ezingalungelanga umbane.
Umbhobho ngamnye wentsimbi kufuneka ubhalwe olu lwazi lulandelayo.
a)Uphawu lwebanga.
b)Uphawu lwendlela yokuvelisa.
c)Ubukhulu.Ububanzi bangaphandle kunye nobukhulu bodonga kufuneka buphawulwe.
d)Igama okanye isifinyezo somenzi.
Xa uphawu olukwityhubhu lunzima kuba ububanzi balo bangaphandle buncinci okanye xa umthengi ecelile njalo, uphawu lunokunikwa kwinqwaba nganye yeetyhubhu ngendlela efanelekileyo.
Izinto zokugquma ezichasene nokugqwala ezifana nezinto zokugquma ezityebileyo kwi-zinc, izinto zokugquma ze-epoxy, izinto zokugquma zepeyinti, njl.njl. zinokusetyenziswa kwiindawo zangaphandle okanye zangaphakathi.
I-STK 400 inika ulungelelwano oluhle lwamandla kunye noqoqosho, nto leyo eyenza ukuba ilungele iiprojekthi ezininzi zobunjineli kunye nolwakhiwo.
Iityhubhu zentsimbi ze-STK 400 zisetyenziswa kakhulu kushishino lokwakha kwaye zifanelekile ngakumbi ukusetyenziswa njengezinto zokwakha ezifana neekholamu, imiqadi, okanye iifreyimu kwizakhiwo zorhwebo nezokuhlala.
Ikwafanelekile nakwiibhulorho, izakhiwo ezixhasayo, kunye nezinye iiprojekthi ezifuna amandla aphakathi kunye nokuqina.
Ingasetyenziselwa ukwakha iingcingo zokukhusela iindlela, izakhelo zeempawu zendlela, kunye nezinye izibonelelo zikawonke-wonke.
Kwimveliso, i-STK 400 ingasetyenziselwa ukuvelisa izakhelo kunye nezakhiwo zokuxhasa oomatshini kunye nezixhobo ngenxa yokuba inomthwalo olungileyo kwaye iyasebenza.
Nceda uqaphele ukuba nangona le migangatho ifana ngokusetyenziswa kwayo kunye nokusebenza kwayo, kunokubakho umahluko omncinci kwimilo ethile yeekhemikhali kunye neeparamitha ezithile zeempawu zemishini.
Xa kufakwa izinto endaweni yazo, iimfuno ezithile zemigangatho kufuneka zithelekiswe ngokweenkcukacha ukuqinisekisa ukuba izinto ezikhethiweyo ziya kuhlangabezana nemigangatho ethile yobugcisa kunye nokhuseleko lweprojekthi.
Ukususela oko yasekwa ngo-2014, iBotop Steel ibe ngumthengisi ophambili wemibhobho yentsimbi yekhabhoni eMntla China, eyaziwa ngenkonzo egqwesileyo, iimveliso ezikumgangatho ophezulu, kunye nezisombululo ezibanzi.
Le nkampani inikezela ngeendidi ngeendidi zeepayipi zentsimbi yekhabhoni kunye neemveliso ezinxulumene noko, kuquka ipayipi yentsimbi engenamthungo, i-ERW, i-LSAW, kunye ne-SSAW, kunye noluhlu olupheleleyo lwee-fittings zepayipi kunye nee-flanges.
Iimveliso zayo ezikhethekileyo ziquka ii-alloys zodidi oluphezulu kunye neentsimbi ezingenasici ze-austenitic, ezenzelwe ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zemibhobho.
