Iphrofayili Yensimbi Egoqekile Ye-Q355B H Beam Eshisayo | Intengo Yemboni Yensimbi Enzima Yesakhiwo | I-Beam Yokusekela Insimbi Ehlanganisiwe Neshisayo Egoqekile
| Into Yokuqhathanisa | I-GB yesiShayina (GB/T 1591)Q355B | I-European EN (EN 10025-2)S355JR / S355JO | I-American ASTM (A572/A572M) Ibanga 50 [345] |
| Ukubaluleka Kokuqamba Amagama | Q: Yima amandla okukhiqiza 355: Inani lesivuno ≥355 MPa B: Ibanga Lekhwalithi B (20°C Ukuhlolwa Komthelela) | S: Insimbi Yesakhiwo 355: Inani lesivuno ≥355 MPa JR: Ukuhlolwa komthelela ku-20°C I-JO: Ukuhlolwa komthelela ku-0°C | Ibanga 50: Amandla okukhiqiza ≥50 ksi (cishe i-345 MPa) |
| Amandla Okukhiqiza | ≥355 MPa (ngobukhulu ≤16mm) | ≥355 MPa (ngobukhulu ≤16mm) | ≥50 ksi(≥345 MPa) |
| Amandla Okudonsa | 470−630 MPa | 470−630 MPa | ≥65 ksi(≥450 MPa) |
| Ukwelulwa | ≥22% (ngobukhulu ≤40mm) | ≥22% (ngobukhulu ≤40mm) | ≥18% (ngobude begeyiji obungu-200mm) ≥21% (ngobude begeyiji obungu-50mm) |
| Ukuqina Komthelela | Amandla omthelela we-longitudinal ku-20°C: ≥34 J | JR: Amandla omthelela ≥27 J ku-20°C I-JO: Amandla omthelela ≥27 J ku-0°C | Akuphoqelekile ngokwezinga elijwayelekile (ngaphandle kokuthi kucelwe umthengi njengemfuneko eyengeziwe, isib. ukuhlolwa kwe-CVN) |
| Ukwakheka Kwamakhemikhali (MAX) | C: ≤0.20% Mn: ≤1.60% Si: ≤0.50% P: ≤0.030% S: ≤0.030% | C: ≤0.24% (ngobukhulu ≤40mm) Mn: ≤1.60% Si: ≤0.55% P: ≤0.035% S: ≤0.035% | C: ≤0.23% Mn: 0.50−1.35% (iyahlukahluka ngobukhulu) I-Si: ≤0.40% P: ≤0.040% S: ≤0.050% |
| I-Carbon Equivalent (CEV) | ≤0.45% (Isimo sokugoqwa okushisayo) | ≤0.45% (ngobukhulu ≤30mm) | Ayinqunyelwe ngokuqinile yi-CEV, kodwa ilawula ngokuqinile izinto ezixubayo (V, Nb, Ti, njll.) |
| Isici | Okuqukethwe (%) |
| Ikhabhoni (C) | ≤ 0.20–0.24 |
| I-Silicon (Si) | ≤ 0.55 |
| I-Manganese (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 Okukhiqiza (i-MPa)
| Ubukhulu (mm) | Amandla Okukhiqiza |
| ≤ 16 | ≥ 355 |
| 16 – 40 | ≥ 345 |
| 40 – 63 | ≥ 335 |
| 63 – 80 | ≥ 325 |
| 80 – 100 | ≥ 315 |
| 100 – 150 | ≥ 305 |
| 150 – 200 | ≥ 285 |
Amandla Okudonsa (i-MPa)
| Ububanzi Bokujiya | Amandla Okudonsa |
| ≤ 80 mm | 470 – 630 |
| 80 – 150 mm | 450 – 600 |
| ≥ 150 mm | 450 – 600 |
Ukwelulwa
| Impahla | Inani |
| Ukwelulwa (%) | ≥ 21–22 |
Ukuhlolwa Komthelela (Ibanga le-Q355B)
| Into | Isidingo |
| Izinga Lokushisa Lokuhlola | 20°C |
| Amandla Omthelela | ≥ 27 J |
Amabanga Ensimbi Elinganayo
| Okujwayelekile | Ibanga Elilinganayo |
| EN | S355JR |
| I-ASTM | I-A572 Gr.50 |
I-Hot Rolled H Beamingxenye evundlile iqukethe iwebhu (isigaba esimaphakathi esiqondile) kanye nama-flange (izingxenye ezivundlile kuzo zombili izinhlangothi). Ama-flange anezindawo zangaphakathi nezangaphandle ezifanayo, futhi ukushintshela kuwebhu kufana ne-arc. Lo mklamo unikeza izinzuzo ezilandelayo:
Amandla aqinile okugobeka: I-modulus yesigaba esiphezulu ikhulisa kakhulu amandla okuthwala umthwalo wemisebe ye-I yendabuko kanye neziteshi ngesisindo esifanayo.
Ukuqina okuphezulu kwesakhiwo: Ububanzi beflange efanayo bunikeza ukuqina okuhle kakhulu ohlangothini, okwenza ifaneleke ukusekela imithwalo yezinhlangothi ezimbili.
Ukusebenza kahle kwezinto ezibonakalayo okuphezulu: Inkinga yokuxineka okuhlobene nezingxenye zensimbi zendabuko iyancipha, okusindisa u-10% kuya ku-30% wensimbi.
Amapharamitha
| Into Yobuchwepheshe | Imininingwane kanye namapharamitha anemininingwane |
| Okujwayelekile | Izinga Likazwelonke LaseShayina: GB/T 1591-2018 |
| Ibanga Lensimbi | I-Q355B Structural Steel H Beam enamandla aphezulu |
| Izilinganiso Zomhlaba Wonke | • Izinga laseYurophu: EN 10025 S355JR • Izinga laseMelika: Ibanga lama-50 le-ASTM A572 • Izinga lesiJapane: I-JIS G3101 SS400 (Isetshenziswa njengokuthuthukiswa/ukufaka esikhundleni esinamandla amakhulu ezimweni ezithile zokwakha) |
| Ukuphakama kwewebhu (H) | 100 mm - 900 mm (Osayizi abanziwe ngokwezifiso bayatholakala) |
| Ububanzi beFlange (B) | 50 mm - 400 mm |
| Ubukhulu bewebhu (t1) | 5 mm - 30 mm |
| Ubukhulu be-Flange (t2) | 7 mm - 50 mm |
| Ubude | Ubude obungu-6m, 9m, 12m, noma obuhlelwe ngokwezifiso ngokwemiklamo yamakhasimende |
| Inqubo Yokukhiqiza | Okushisiwe Okugoqiwe Noma Okushisiwe / Okune-HF (Imvamisa Ephakeme) Okushisiwe |
| Ukwelashwa Okuphezulu | • Insimbi Engenalutho / Emnyama • Isimbozo Esivimbelwe Ukugqwala • I-Hot-Dip Galvanized (Inikeza ukumelana okuhle kokugqwala kwezicelo zangaphandle) |
| Izakhiwo Zemishini | • Amandla Okukhiqiza: ≥355 MPa (ngobukhulu ≤16mm) • Amandla Okudonsa: 470−630 MPa • Ukuhlolwa Komthelela: Amandla omthelela we-longitudinal ≥34 J ku-20°C |
| Isitifiketi Sekhwalithi | • I-MTC (iSitifiketi Sokuhlola seMill) ihambisana ne-EN 10204 3.1 enikeziwe • Isekela ukusampula nokuhlolwa kwenkampani yangaphandle endaweni yi-SGS, BV (Bureau Veritas), noma i-TUV |
| Izinhlelo Zokusebenza Eziyinhloko | • Izinhlaka zezakhiwo zezitshalo zezimboni ezinkulu kanye nezakhiwo eziphakeme • Ukwakhiwa kwamabhuloho kanye nengqalasizinda yomphakathi • Izisekelo zemishini, izisekelo, kanye nezinhlaka zokubeka izimayini • Izinhlelo zokwakha ezilungisiwe kusengaphambili |
- Insimbi emnyama engenalutho: Ilungele ukusetshenziswa ngaphakathi kanye nokucubungula okwesibili endaweni.
- Isembozo se-primer esilwa nokugqwala: Sivimbela ukugqwala nokugqwala ngesikhathi sokuthuthwa kolwandle kanye nokugcinwa kwesikhashana.
- I-hot-dip galvanizing: Idala i-zinc coating eqinile neqinile yokumelana nokugqwala isikhathi eside. Kuyisinqumo esifanele ezindaweni zangaphandle ezisogwini, ezinomswakama, zezimboni nezinzima ukuze kwandiswe isikhathi senkonzo yesakhiwo.
1. Ukusebenza Okuphezulu Kwesakhiwo kanye nokonga Izindleko
Ngenxa yesigaba esithuthukisiwe, imisebe yethu ye-H inesilinganiso esihle kakhulu samandla nesisindo. Ngaphansi kwezidingo ezifanayo zomthwalo, inciphisa ukusetshenziswa kwensimbi ngo-15%–30% uma kuqhathaniswa nemisebe ye-I evamile, izindleko zezinto zokwakha ezisikiwe kanye nesisindo esiqinile sokwakheka. Uhlaka olulula luphinde luvumele umsebenzi wesisekelo olula nowonga imali, wehlise izindleko zephrojekthi iyonke.
2. Ukuthobela Ngokugcwele Izindinganiso Zomhlaba Wonke Ukuze Kusetshenziswe Kalula
Imikhiqizo yethu ihlangabezana nezimfuneko eziqashelwa kabanzi emhlabeni wonke, okuhlanganisa i-EN 10025 (S355JR/S355JO) kanye ne-ASTM A572 Gr 50. Onjiniyela nabathengi bangayisebenzisa ngqo njengenye indlela ngaphandle kokulungisa imidwebo yokwakha, okugwema ukubuyekezwa kobuchwepheshe okwengeziwe kanye nezindleko zokuguqulwa.
3. Ukusebenza Okuthembekile Kwemishini Nokuphepha Kwesakhiwo
Njengoba amandla okukhiqiza efika ku-355 MPa kanye namandla okudonsa asukela ku-470 kuya ku-630 MPa, imishayo inikeza umthamo oqinile womthwalo, ukuqina okukhulu kokugoba kanye nokumelana nokuzamazama komhlaba okuthembekile. Silawula ngokuqinile okuqukethwe kwekhabhoni kanye nokulingana kwekhabhoni, siqinisekisa ukushibilika okuhle kakhulu kokubili ekucutshungulweni kwefektri kanye nokwakhiwa kwasendaweni, sigcina izakhiwo zensimbi zizinzile futhi zihlala isikhathi eside.
4. Ukwelashwa Okuhlukahlukene Kokugqwala
Sinikeza ukuqeda okuningana kobuso: insimbi emnyama eluhlaza, i-primer yokulwa nokugqwala kanye ne-hot-dip galvanizing. Ingqimba ye-galvaning efanayo inikeza isivikelo esiqinile ekugqwaleni, ilungele izindawo zasezindaweni ezisogwini, ezinomswakama nezinzima zezimboni. Yelula impilo yesevisi ngempumelelo futhi yehlisa imvamisa yokulungisa ejwayelekile.
5. Ukuthengisa Okuqondile Kwasefekthri Nokulawulwa Kwekhwalithi Okuqinile
Sivela ngqo efektri, sinikeza amanani ancintisanayo ngobuningi ngaphandle kwezimpawu eziphakathi nendawo. Iqoqo ngalinye lihambisana nezitifiketi zokuhlolwa kwemishini ezihambisana ne-EN 10204 3.1. Ukuhlolwa kwezinkampani zangaphandle yi-SGS, i-BV, i-TUV kanye nezinye izikhungo ezigunyaziwe kusekelwa ngokugcwele, futhi ikhwalithi yomkhiqizo ingalandelelwa ngokugcwele.
Ezomphakathi kanye Nezohwebo:Izinsika eziphakeme eziphakeme, izikhumulo zezindiza, izinkundla zemidlalo, kanye nezinhlelo zezakhiwo ezilungisiwe.
Izimboni kanye Nezokuthutha:Imigwaqo yezindiza ye-crane enzima, ama-trus asefektri, kanye nezindawo zokugcina impahla ezibanzi.
Ingqalasizinda kanye Namandla:Amabhuloho omgwaqo omkhulu/wesitimela, ama-racks amapayipi e-petrochemical, kanye namapulatifomu okufaka amandla elanga/omoya.
Imishini Yasolwandle Nezinzima:Izikhumulo zechweba, izinhlangothi zeplatifomu ezisogwini lolwandle, ozimele bemishini yokumba, kanye nodonga lwesisekelo.
Ukupakisha Okujwayelekile:Ukupakisha okufanele ukuthunyelwa olwandle. Kuhlanganiswe ngemichilo yensimbi eqinile ukuze kuphathwe futhi kuthuthwe ngokuphephile.
Ukuvikelwa Komphezulu:Ukugqoka okugcotshwe ngamafutha, okufakwe i-primer, noma okuqediwe nge-hot-dip galvanized ngokwezidingo zamakhasimende.
Ukuhlonza:Amathegi omkhiqizo angangenwa manzi anamathiselwe kuphakheji ngayinye, abonisa inombolo yokushisa, ibanga, usayizi, ubude, kanye nesisindo.
Izindlela Zokuthumela:Kunikezwa ngemikhumbi emikhulu (yokuthunyelwa okukhulu) noma kupakishwe ezitsheni ezingama-20ft/40ft (ngobude obungaguquki obufika ku-11.8m).
Isimo Sokulethwa:Igoqwe noma ishiselwe ngokushisa, ingalandeleka ngokuphelele ngezitifiketi zokuhlolwa kwe-Mill (ihambisana ne-MTC ne-EN 10204 3.1).
Isikhathi esiholayo:Izinsuku eziyi-7-30, Ukuthunyelwa okusheshayo okuqondile efektri, ngokuhlolwa kwezinkampani zangaphandle yi-SGS, BV, noma i-TUV kusekelwa ngokugcwele ngaphambi kokulayisha.
Umbuzo 1: Ingabe i-GB Q355B H-beams ingathatha indawo ye-EN S355JR kanye ne-ASTM A572 Gr.50 ngokuqondile?
A: Yebo. I-Q355B ifana ne-S355JR kanye ne-ASTM A572 Gr.50 ezimpahleni eziyinhloko zemishini, enamandla amancane okukhiqiza angu-345–355 MPa. Isebenza njengokufaka esikhundleni okuqondile okuphelele, okungadingi ukulungiswa ekubalweni kwesakhiwo noma imidwebo yokwakha.
UMBUZO 2: Uyini umehluko wokuqina komthelela phakathi kwe-Q355B ne-S355JO?
A: I-Q355B inokuhlolwa komthelela wesikhathi eside okungu-20°C (≥34 J), okulingana nebanga le-European S355JR. Kumaphrojekthi esifunda esibandayo adinga indinganiso ye-S355JO (ukumelana komthelela ongu-0°C), singalungisa izingxenye ze-micro-alloying ngesikhathi sokukhiqiza ukuze zihlangabezane nezidingo zomthelela ongu-0°C, ngezitifiketi zokuhlola ezisemthethweni ezenziwe ngokwezifiso ezinikezwe ukuqinisekisa.
Q3: Yibuphi ubude obujwayelekile obunikezwayo, futhi buthinta kanjani ukuthunyelwa?
A: Ubude bethu obujwayelekile besitoko bungu-6m, 9m kanye no-12m.
- Ukuthunyelwa kwezitsha: Ukuze kufakwe izitsha ezijwayelekile ezingama-20ft/40ft (ubude bangaphakathi obuphezulu bungu-11.8m), sincoma ubude obungaphansi kuka-11.8m ukuze sigweme izinkinga zokulayisha.
- Ukuthunyelwa kwemikhumbi emikhulu: Ubude obuphelele obungu-12m kanye nosayizi omude ngokwezifiso kuyatholakala kuma-oda ephrojekthi amakhulu.
Umbuzo 4: Ingabe ukwelashwa kobuso okulwa nokugqwala kuyatholakala ukuze kusetshenziswe ngaphandle?
A: Yebo. Sinikeza izinketho zokuqeda ubuso eziguquguqukayo zezimo ezahlukene zephrojekthi:
- Insimbi emnyama engenalutho: Ilungele ukusetshenziswa ngaphakathi kanye nokucubungula okwesibili endaweni.
- Isembozo se-primer esilwa nokugqwala: Sivimbela ukugqwala nokugqwala ngesikhathi sokuthuthwa kolwandle kanye nokugcinwa kwesikhashana.
- I-hot-dip galvanizing: Idala i-zinc coating eqinile neqinile yokumelana nokugqwala isikhathi eside. Kuyisinqumo esifanele ezindaweni zangaphandle ezisogwini, ezinomswakama, zezimboni nezinzima ukuze kwandiswe isikhathi senkonzo yesakhiwo.
Q5: Ikhwalithi yomkhiqizo kanye nokulandelela okugcwele kuqinisekiswa kanjani?
A: Konke ukuthunyelwa kusekela ukulandeleka okugcwele. Iqoqo ngalinye linikezwa isitifiketi sokuhlola esisemthethweni se-EN 10204 3.1 mill, esihlanganisa inombolo ephelele yokushisa, ukwakheka kwamakhemikhali kanye nedatha yokusebenza komshini. Siphinde sisekele ngokugcwele ukulayisha kusengaphambili amasampula kanye nokuhlolwa kwezinkampani zangaphandle yizikhungo ezigunyaziwe okuhlanganisa i-SGS, i-BV kanye ne-TUV.
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