Iprofayili yentsimbi ye-Q355B H Beam eshushu eqengqelekayo yeProjekthi zoLwakhiwo kunye nezoLwakhiwo | Umthengisi wentsimbi yesakhiwo esinamandla aphezulu
| Into yokuthelekisa | I-Chinese GB (GB/T 1591)Q355B | YaseYurophu EN (EN 10025-2)S355JR / S355JO | I-ASTM yaseMelika (A572/A572M) Ibanga 50 [345] |
| Ukubaluleka Kwamagama | Q: Yima amandla okuvelisa 355: Ixabiso lemveliso ≥355 MPa B: Umgangatho weBanga B (uvavanyo lwempembelelo lwama-20°C) | S: Intsimbi yoLwakhiwo 355: Ixabiso lemveliso ≥355 MPa JR: Uvavanyo lwempembelelo kwi-20°C JO: Uvavanyo lwempembelelo kwi-0°C | Ibanga lama-50: Amandla okuvelisa ≥50 ksi (malunga ne-345 MPa) |
| Unikeze Amandla | ≥355 MPa (yobukhulu ≤16mm) | ≥355 MPa (yobukhulu ≤16mm) | ≥50 ksi(≥345 MPa) |
| Tensile strength | 470−630 MPa | 470−630 MPa | ≥65 ksi(≥450 MPa) |
| Ukwandiswa | ≥22% (ngokobukhulu ≤40mm) | ≥22% (ngokobukhulu ≤40mm) | ≥18% (ngobude begeyiji obuyi-200mm) ≥21% (ngobude begeyiji engama-50mm) |
| Ukuqina Kwempembelelo | Amandla empembelelo ende kwi-20°C: ≥34 J | JR: Amandla empembelelo ≥27 J kwi-20°C I-JO: Amandla empembelelo ≥27 J kwi-0°C | Akunyanzelekanga ngokwemigangatho (ngaphandle kokuba umthengi ecelile njengemfuneko eyongezelelweyo, umz., uvavanyo lwe-CVN) |
| Ulwakhiwo lweeKhemikhali (MAX) | C: ≤0.20% Mn: ≤1.60% Si: ≤0.50% P: ≤0.030% S: ≤0.030% | C: ≤0.24% (yobukhulu ≤40mm) Mn: ≤1.60% Si: ≤0.55% P: ≤0.035% S: ≤0.035% | C: ≤0.23% Mn: 0.50−1.35% (iyahluka ngokobukhulu) Si: ≤0.40% P: ≤0.040% S: ≤0.050% |
| I-Carbon Equivalent (CEV) | ≤0.45% (Imeko yokuqengqeleka eshushu) | ≤0.45% (ngokobukhulu ≤30mm) | Ayithintelwanga yi-CEV ngokungqongqo, kodwa ilawula ngokungqongqo izinto ezidibanisayo (V, Nb, Ti, njl.njl.) |
| I-elementi | Umxholo (%) |
| Ikhabhoni (C) | ≤ 0.20–0.24 |
| I-Silicon (Si) | ≤ 0.55 |
| IManganese (Mn) | ≤ 1.60 |
| I-Phosphorus (P) | ≤ 0.035 |
| I-Sulfur (S) | ≤ 0.035 |
| Nb + V + Ti | ≤ 0.12 |
| I-Chromium (Cr) | ≤ 0.30 |
| I-Nickel (Ni) | ≤ 0.50 |
Amandla okuKhula (i-MPa)
| Ubukhulu (mm) | Unikeze Amandla |
| ≤ 16 | ≥ 355 |
| 16 – 40 | ≥ 345 |
| 40 – 63 | ≥ 335 |
| 63 – 80 | ≥ 325 |
| 80 – 100 | ≥ 315 |
| 100 – 150 | ≥ 305 |
| 150 – 200 | ≥ 285 |
Amandla okuThamba (MPa)
| Uluhlu Lobukhulu | Tensile strength |
| ≤ 80 mm | 470 – 630 |
| 80 – 150 mm | 450 – 600 |
| ≥ 150 mm | 450 – 600 |
Ukwandiswa
| Ipropati | Ixabiso |
| Ukwandiswa (%) | ≥ 21–22 |
Uvavanyo lweMpembelelo (iBanga le-Q355B)
| Into | Imfuneko |
| Ubushushu bovavanyo | 20°C |
| Amandla empembelelo | ≥ 27 J |
Amanqanaba eNsimbi elinganayo
| Umgangatho | Ibanga elilinganayo |
| EN | S355JR |
| I-ASTM | I-A572 Gr.50 |
Umqadi we-H oQokelelweyo oshushuicandelo elinqamlezileyo liqulathe iwebhu (icandelo elisembindini elithe nkqo) kunye neeflanges (amacandelo athe tye kumacala omabini). Iiflanges zinomphezulu wangaphakathi nowangaphandle ohambelanayo, kwaye ukutshintshela kwiwebhu kumile okwe-arc. Olu yilo lubonelela ngezi zibonelelo zilandelayo:
Amandla aqinileyo okugoba: I-modulus yecandelo eliphezulu inyusa kakhulu amandla okuthwala umthwalo we-I-beams zemveli kunye neetshaneli ezinobunzima obufanayo.
Uzinzo oluphezulu lwesakhiwo: Ububanzi beflegi efanayo bubonelela ngokuqina okugqwesileyo ecaleni, okwenza ukuba ifaneleke ukuxhasa imithwalo yecala eliya kwicala eliya kwicala eliya kwelinye.
Ukusebenza kakuhle kwezinto ezibonakalayo: Ingxaki yoxinzelelo oluhambelana namacandelo entsimbi yendabuko iyancipha, nto leyo egcina i-10% ukuya kwi-30% yentsimbi.
Iiparameters
| Into yoBugcisa | Iinkcukacha kunye neeParamitha ezineenkcukacha |
| Umgangatho | Umgangatho weSizwe waseTshayina: GB/T 1591-2018 |
| Ibanga lentsimbi | I-Q355B High-Strength Low-Alloy Structural Steel H Beam |
| Ii-International Equivalents | • Umgangatho waseYurophu: EN 10025 S355JR • Umgangatho waseMelika: ASTM A572 Ibanga lama-50 • Umgangatho waseJapan: JIS G3101 SS400 (Isetyenziswa njengophuculo/utshintsho olunamandla aphezulu kwiimeko ezithile zokwakha) |
| Ubude bewebhu (H) | 100 mm - 900 mm (Ubungakanani obulungiselelwe wena buyafumaneka) |
| Ububanzi beFlange (B) | 50 mm - 400 mm |
| Ubukhulu bewebhu (t1) | 5 mm - 30 mm |
| Ubukhulu beFlange (t2) | 7 mm - 50 mm |
| Ubude | Ubude obuyi-6m, 9m, 12m, okanye obulungiselelwe wena ngokwezicwangciso zomthengi |
| Inkqubo yoMveliso | I-Hot Rolled okanye i-Welded / i-HF (i-High-frequency) i-Welded |
| Unyango Lomphezulu | • Intsimbi engenanto / emnyama • Ukwaleka okuchasene nomhlwa • I-Hot-Dip Galvanized (Inika ukumelana nokugqwala okuphezulu kwizicelo zangaphandle) |
| Iipropati zoomatshini | • Amandla okuvelisa: ≥355 MPa (ngokobukhulu ≤16mm) • Amandla okuThamba: 470−630 MPa • Uvavanyo lweMpembelelo: Amandla empembelelo ende ≥34 J kwi-20°C |
| Isiqinisekiso soMgangatho | • I-MTC (iSiqinisekiso soVavanyo lweMill) ihambelana ne-EN 10204 3.1 enikiweyo • Ixhasa ukusampula nokuvavanya komntu wesithathu kwindawo yokusebenza yi-SGS, BV (Bureau Veritas), okanye i-TUV |
| Izicelo eziphambili | • Izakhiwo zezakhiwo zezityalo ezinkulu zoshishino kunye nezakhiwo eziphakamileyo • Ukwakhiwa kweebhulorho kunye neziseko zophuhliso • Izixhobo ezixhasayo, iziseko, kunye neefreyimu zodonga lwemigodi • Iinkqubo zokwakha ezilungisiweyo kwangaphambili |
- Intsimbi emnyama engenanto: Ilungele ukusetyenziswa ngaphakathi kunye nokulungiswa kwesibini kwindawo.
- I-primer coating elwa nomhlwa: Ithintela i-oxidation kunye nomhlwa ngexesha lokuthuthwa kolwandle kunye nokugcinwa kwexesha elifutshane.
- I-hot-dip galvanizing: Yenza i-zinc coating etyebileyo neyomeleleyo yokumelana nokugqwala ixesha elide. Lukhetho olufanelekileyo kwiindawo zangaphandle ezikunxweme, ezifumileyo, ezoshishino nezinzima ukuze kwandiswe ubomi benkonzo yesakhiwo.
1. Ukusebenza kakuhle kwesakhiwo kunye nokonga iindleko
Ngenxa yendlela ephuculiweyo yokusika i-cross-section, ii-H-beams zethu zinomlinganiselo ogqwesileyo wokuqina-ubunzima. Phantsi kweemfuno ezifanayo zomthwalo, zinciphisa ukusetyenziswa kwentsimbi nge-15%–30% xa kuthelekiswa nee-I-beams eziqhelekileyo, iindleko zezinto ezisikiweyo kunye nobunzima obungaguqukiyo bolwakhiwo. Isakhelo esikhaphukhaphu sikwavumela umsebenzi wesiseko olula nowonga imali, nto leyo enciphisa iindleko zeprojekthi iyonke.
2. Ukuthobela ngokupheleleyo iMigangatho yaMazwe ngaMazwe ukuze kube lula ukuyisebenzisa
Iimveliso zethu ziyahlangabezana neemfuno ezivunyiweyo kwihlabathi liphela, kuquka i-EN 10025 (S355JR/S355JO) kunye ne-ASTM A572 Gr 50. Iinjineli kunye nabathengi banokuzisebenzisa ngokuthe ngqo njengezinye izinto ngaphandle kokulungisa imizobo yokwakha, nto leyo ethintela uphononongo olongezelelweyo lobuchwephesha kunye neendleko zokuguqula.
3. Ukusebenza okuthembekileyo koomatshini kunye nokhuseleko lwesakhiwo
Njengoko amandla okuvelisa efikelela kwi-355 MPa kunye namandla okutsalwa aqala kwi-470 ukuya kwi-630 MPa, imiqadi inika amandla omthwalo aqinileyo, ukuqina okukhulu kokugoba kunye nokumelana okuthembekileyo kwenyikima. Silawula ngokungqongqo umxholo wekhabhoni kunye ne-carbon equivalent, siqinisekisa ukudityaniswa okugqwesileyo kokubini kulungiso lwefektri kunye nolwakhiwo lwangaphakathi, sigcina izakhiwo zentsimbi zizinzile kwaye zihlala ixesha elide.
4. Unyango oluhlukeneyo loMphezulu wokuxhathisa ukugqwala
Sinikezela ngeendlela ezahlukeneyo zokugqiba umphezulu: intsimbi emnyama eluhlaza, i-primer elwa nomhlwa kunye ne-hot-dip galvanizing. Umaleko we-galvanized ofanayo unika ukhuseleko oluqinileyo kwi-corrosion, olulungele iindawo ezikufutshane nolwandle, ezifumileyo nezinzima kwimizi-mveliso. Uyandisa ubomi benkonzo kwaye unciphisa amaxesha okugcinwa rhoqo.
5. Ukuthengiswa ngqo kwiFektri kunye noLawulo oluQolileyo loMgangatho
Sivela ngqo kumzi-mveliso, sinikezela ngamaxabiso amakhulu akhuphisanayo ngaphandle kweempawu eziphakathi. Ibhetshi nganye ihamba nezatifikethi zovavanyo lwe-mill ezihambelana ne-EN 10204 3.1. Ukuhlolwa kweqela lesithathu yi-SGS, i-BV, i-TUV kunye nezinye iziko ezigunyazisiweyo kuyaxhaswa ngokupheleleyo, kwaye umgangatho wemveliso uyalandeleka ngokupheleleyo.
Ezoluntu nezoRhwebo:Iikholamu eziphakamileyo ezinde, izikhululo zeenqwelo-moya, amabala emidlalo, kunye neenkqubo zezakhiwo ezenziwe ngaphambili.
Imizi-mveliso kunye noLawulo lwezoThutho:Iindlela zokubaleka iikreyini ezinzima, ii-trusses zefektri, kunye neendawo zokugcina izinto ezibanzi.
Iziseko zophuhliso kunye namandla:Iibhulorho zoohola bendlela/uloliwe, iirakhi zepayipi zepetrochemical, kunye namaqonga okufaka amandla elanga/omoya.
Oomatshini baselwandle kunye nooomatshini abanzima:Izitishi zezibuko, iindawo eziphezulu zeqonga elingaselunxwemeni, iifreyimu zezixhobo zemigodi, kunye nodonga lwesiseko.
Ukupakisha okuqhelekileyo:Ukupakisha okufanelekileyo ukuthutha emanzini. Kuhlanganiswe ngemicu yentsimbi eqinileyo ukuze kuphathwe ngokukhuselekileyo kwaye kuthuthwe.
Ukhuseleko Lomphezulu:I-anti-rust oil, i-primed coating, okanye i-hot-dip galvanized finishes ngokweemfuno zabathengi.
Ukuchongwa:Iithegi zemveliso ezingangeni manzi eziqhotyoshelwe kwiphakheji nganye, zibonisa inani lobushushu, uhlobo, ubungakanani, ubude, kunye nobunzima.
Iindlela zokuthumela:Ihanjiswa ngeenqanawa ezinkulu (kwiimpahla ezinkulu) okanye ipakishwe kwiikhonteyina ezingama-20ft/40ft (kubude obuzinzileyo ukuya kuthi ga kwi-11.8m).
Imeko yokuhanjiswa:Igoqwe okanye itshixiwe ngobushushu, ilandeleka ngokupheleleyo ngeeSatifikethi zoVavanyo lweMill (i-MTC ihambelana ne-EN 10204 3.1).
Ixesha lokukhokhela:Iintsuku ezisi-7-30, Ukuthunyelwa ngokuthe ngqo kwifektri ngokukhawuleza, kunye nokuhlolwa komntu wesithathu yi-SGS, i-BV, okanye i-TUV exhaswa ngokupheleleyo ngaphambi kokuba kulayishwe.
Umbuzo 1: Ngaba ii-GB Q355B H-beams zingathatha indawo ye-EN S355JR kunye ne-ASTM A572 Gr.50 ngokuthe ngqo?
A: Ewe. I-Q355B ihambelana ne-S355JR kunye ne-ASTM A572 Gr.50 kwiipropati eziphambili zoomatshini, kunye namandla amancinci okuvelisa angama-345–355 MPa. Isebenza njengotshintsho oluchanekileyo ngqo, olungafuneki hlengahlengiso kwizibalo zesakhiwo okanye kwimizobo yokwakha.
Umbuzo 2: Yintoni umahluko phakathi kokuqina kwempembelelo phakathi kwe-Q355B kunye ne-S355JO?
A: I-Q355B inovavanyo lwempembelelo olude lwe-20°C (≥34 J), olulingana nodidi lwe-European S355JR. Kwiiprojekthi zengingqi ebandayo ezifuna umgangatho we-S355JO (ukuxhathisa impembelelo ye-0°C), singalungisa izinto ezixutyiweyo nge-micro-alloying ngexesha lokuvelisa ukuze zihlangabezane neemfuno zempembelelo ye-0°C, kunye nezatifikethi zovavanyo olusemthethweni lwe-mill ezenzelwe wena ezibonelelweyo ukuze ziqinisekiswe.
Q3: Zeziphi ubude obuqhelekileyo obunikezelwayo, kwaye buyichaphazela njani imithwalo yokuthunyelwa?
A: Ubude besitokhwe sethu esiqhelekileyo yi-6m, 9m kunye ne-12m.
- Ukuthunyelwa kweekhonteyina: Ukuze kulingane iikhonteyina eziqhelekileyo ezingama-20ft/40ft (ubude bangaphakathi obuphezulu yi-11.8m), sicebisa ubude obungaphantsi kwe-11.8m ukuze siphephe iingxaki zokulayisha.
- Ukuthunyelwa kweenqanawa ezinkulu: Ubude obupheleleyo obuyi-12m kunye nobukhulu obude obuqhelekileyo buyafumaneka kwiiodolo zeprojekthi ezinkulu.
Umbuzo 4: Ngaba unyango lomphezulu oluchasene nokugqwala luyafumaneka kwizicelo zangaphandle?
A: Ewe. Sibonelela ngeendlela zokugqiba umphezulu eziguquguqukayo kwiimeko ezahlukeneyo zeprojekthi:
- Intsimbi emnyama engenanto: Ilungele ukusetyenziswa ngaphakathi kunye nokulungiswa kwesibini kwindawo.
- I-primer coating elwa nomhlwa: Ithintela i-oxidation kunye nomhlwa ngexesha lokuthuthwa kolwandle kunye nokugcinwa kwexesha elifutshane.
- I-hot-dip galvanizing: Yenza i-zinc coating etyebileyo neyomeleleyo yokumelana nokugqwala ixesha elide. Lukhetho olufanelekileyo kwiindawo zangaphandle ezikunxweme, ezifumileyo, ezoshishino nezinzima ukuze kwandiswe ubomi benkonzo yesakhiwo.
Q5: Umgangatho wemveliso kunye nokulandeleka ngokupheleleyo kuqinisekiswa njani?
A: Zonke izinto ezithunyelwayo zixhasa ukulandeleka ngokupheleleyo. Ibhetshi nganye inikwa isatifikethi sovavanyo esisemthethweni se-EN 10204 3.1 mill, esigubungela inani elipheleleyo lobushushu, ukwakheka kweekhemikhali kunye nedatha yokusebenza koomatshini. Sikwaxhasa ngokupheleleyo ukulayisha kwangaphambili iisampulu kunye nokuhlolwa ngamaziko anegunya kuquka i-SGS, i-BV kunye ne-TUV.
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