Mbiri Yachitsulo Yotentha Yozungulira Q355B H Beam | Mitengo Yachitsulo Yolemera Yopangira Zitsulo Zozungulira H | Mtanda Wothandizira Chitsulo Cholumikizidwa ndi Chotentha
| Chinthu Choyerekeza | Chitchaina GB (GB/T 1591)Q355B | European EN (EN 10025-2)S355JR / S355JO | American ASTM (A572/A572M) Giredi 50 [345] |
| Kufunika kwa Kutchula Dzina | Q: Kuyimira mphamvu yokolola 355: Mtengo wokwanira ≥355 MPa B: Giredi Yabwino B (Mayeso a Impact a 20°C) | S: Chitsulo Chomangira 355: Mtengo wokwanira ≥355 MPa JR: Kuyesa kwa mphamvu pa 20°C JO: Kuyesa kwa mphamvu pa 0°C | Giredi 50: Mphamvu yotulutsa ≥50 ksi (pafupifupi 345 MPa) |
| Mphamvu Yopereka | ≥355 MPa (ya makulidwe ≤16mm) | ≥355 MPa (ya makulidwe ≤16mm) | ≥50 ksi(≥345 MPa) |
| Kulimba kwamakokedwe | 470−630 MPa | 470−630 MPa | ≥65 ksi(≥450 MPa) |
| Kutalikitsa | ≥22% (ya makulidwe ≤40mm) | ≥22% (ya makulidwe ≤40mm) | ≥18% (mu kutalika kwa 200mm gauge) ≥21% (mu utali wa 50mm geji) |
| Kulimba kwa Impact | Mphamvu yokhudza kutalika kwa nthawi yayitali pa 20°C: ≥34 J | JR: Mphamvu ya mphamvu ≥27 J pa 20°C JO: Mphamvu ya mphamvu ≥27 J pa 0°C | Sizokakamiza malinga ndi muyezo (pokhapokha ngati wogula apempha ngati chowonjezera, mwachitsanzo, mayeso a CVN) |
| Kapangidwe ka Mankhwala (MAX) | C: ≤0.20% Mn: ≤1.60% Si: ≤0.50% P: ≤0.030% S: ≤0.030% | C: ≤0.24% (ya makulidwe ≤40mm) Mn: ≤1.60% Si: ≤0.55% P: ≤0.035% S: ≤0.035% | C: ≤0.23% Mn: 0.50−1.35% (zimasiyana malinga ndi makulidwe) Si: ≤0.40% P: ≤0.040% S: ≤0.050% |
| Chofanana ndi Kaboni (CEV) | ≤0.45% (Kutentha kozungulira) | ≤0.45% (ya makulidwe ≤30mm) | Sizimangoletsedwa ndi CEV, koma zimawongolera mosamala zinthu zophatikiza (V, Nb, Ti, ndi zina zotero) |
| Chinthu | Zomwe zili mkati (%) |
| Kaboni (C) | ≤ 0.20–0.24 |
| Silikoni (Si) | ≤ 0.55 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfure (S) | ≤ 0.035 |
| Nb + V + Ti | ≤ 0.12 |
| Chromium (Cr) | ≤ 0.30 |
| Nikeli (Ni) | ≤ 0.50 |
Mphamvu Yotulutsa (MPa)
| Kukhuthala (mm) | Mphamvu Yopereka |
| ≤ 16 | ≥ 355 |
| 16 - 40 | ≥ 345 |
| 40 - 63 | ≥ 335 |
| 63 - 80 | ≥ 325 |
| 80 - 100 | ≥ 315 |
| 100 - 150 | ≥ 305 |
| 150 - 200 | ≥ 285 |
Mphamvu Yokoka (MPa)
| Makulidwe osiyanasiyana | Kulimba kwamakokedwe |
| ≤ 80 mm | 470 – 630 |
| 80 – 150 mm | 450 – 600 |
| ≥ 150 mm | 450 – 600 |
Kutalikitsa
| Katundu | Mtengo |
| Kutalika (%) | ≥ 21–22 |
Mayeso a Impact (Gredi ya Q355B)
| Chinthu | Chofunikira |
| Kutentha kwa Mayeso | 20°C |
| Mphamvu Yokhudza Mphamvu | ≥ 27 J |
Magiredi Ofanana a Chitsulo
| Muyezo | Giredi Yofanana |
| EN | S355JR |
| ASTM | A572 Gr.50 |
Mtambo Wotentha Wozungulira HGawo lopingasa lili ndi ukonde (gawo lapakati loyima) ndi ma flange (magawo opingasa mbali zonse ziwiri). Ma flange ali ndi malo ofanana mkati ndi kunja, ndipo kusintha kupita ku ukonde kumakhala kofanana ndi arc. Kapangidwe kameneka kamapereka ubwino wotsatira:
Mphamvu yolimba yopindika: Modulus ya gawo lalitali imawonjezera kwambiri mphamvu yonyamula katundu ya mipiringidzo yachikhalidwe ya I ndi njira zoyezera katundu pa kulemera komweko.
Kukhazikika kwakukulu kwa kapangidwe kake: Kupingasa kwa flange yofanana kumapereka kuuma kwabwino kwambiri kumbali, zomwe zimapangitsa kuti ikhale yoyenera kuthandizira katundu wozungulira mbali zonse ziwiri.
Kugwiritsa ntchito bwino zinthu: Vuto la kupsinjika maganizo lomwe limagwirizanitsidwa ndi zigawo zachitsulo zachikhalidwe limachepa, zomwe zimapulumutsa 10% mpaka 30% ya chitsulo.
Magawo
| Chinthu chaukadaulo | Mafotokozedwe ndi Ma Parameters Atsatanetsatane |
| Muyezo | Muyezo Wadziko Lonse wa ku China: GB/T 1591-2018 |
| Kalasi yachitsulo | Q355B High-Strength Low-Alloy Structural Steel H Beam |
| Zofanana Padziko Lonse | • Muyezo wa ku Ulaya: EN 10025 S355JR • Muyezo wa ku America: ASTM A572 Giredi 50 • Muyezo Wachijapani: JIS G3101 SS400 (Yogwiritsidwa ntchito ngati chosinthira/chosinthira champhamvu kwambiri m'malo enaake omangira) |
| Kutalika kwa intaneti (H) | 100 mm - 900 mm (Miyeso yosinthidwa ikupezeka) |
| Kukula kwa Flange (B) | 50 mm - 400 mm |
| Kukhuthala kwa intaneti (t1) | 5 mm - 30 mm |
| Kukhuthala kwa Flange (t2) | 7 mm - 50 mm |
| Utali | 6m, 9m, 12m, kapena kutalika kosinthidwa malinga ndi mapulani a kasitomala |
| Njira Yopangira | Wotenthedwa kapena Wowotcherera Wotentha / Wowotcherera wa HF (Wokwera Kwambiri) |
| Chithandizo cha Pamwamba | • Chitsulo Chopanda kanthu / Chakuda • Chophimba Choteteza Dzimbiri • Choviikidwa mu galvanized yotentha (Chimapereka kukana dzimbiri kwa ntchito zakunja) |
| Katundu wa Makina | • Mphamvu Yotulutsa: ≥355 MPa (ya makulidwe ≤16mm) • Mphamvu Yokoka: 470−630 MPa • Kuyesa Kokhudza Mphamvu: Mphamvu Yokoka Yotalikirapo ≥34 J pa 20°C |
| Chitsimikizo Chaubwino | • MTC (Mill Test Certificate) ikutsatira EN 10204 3.1 yoperekedwa • Imathandizira kusanthula ndi kuyesa kwa anthu ena pamalopo ndi SGS, BV (Bureau Veritas), kapena TUV. |
| Mapulogalamu Ofunika | • Mapangidwe a nyumba zamafakitale akuluakulu ndi nyumba zazitali • Kumanga milatho ndi zomangamanga za boma • Zothandizira zida, maziko, ndi mafelemu a migodi • Makina omangira nyumba okonzedwa kale |
- Chitsulo chakuda chopanda kanthu: Chabwino kwambiri kuti chigwiritsidwe ntchito m'nyumba komanso chogwiritsidwanso ntchito pamalopo.
- Chophimba choteteza dzimbiri: Chimaletsa kukhuthala ndi dzimbiri panthawi yoyenda m'nyanja komanso kusungidwa kwakanthawi kochepa.
- Kuthira galvanizing m'madzi otentha: Kumapanga utoto wolimba komanso wolimba wa zinc kuti ukhale wolimba komanso wolimba kwa nthawi yayitali. Ndi chisankho chabwino kwambiri m'malo akunja a m'mphepete mwa nyanja, chinyezi, mafakitale komanso ovuta kuti ukhale nthawi yayitali.
1. Kugwira Ntchito Kwambiri Pakapangidwe Kake ndi Kusunga Ndalama
Chifukwa cha kukonzedwa bwino kwa gawo, ma H-beam athu ali ndi chiŵerengero chabwino kwambiri cha mphamvu ndi kulemera. Pansi pa zofunikira zofanana zonyamula katundu, amachepetsa kugwiritsa ntchito chitsulo ndi 15%–30% poyerekeza ndi ma I-beam achizolowezi, ndalama zochepetsera zinthu komanso kulemera kosatha kwa kapangidwe kake. Chimango chopepuka chimalolanso ntchito yosavuta komanso yotsika mtengo yomanga maziko, zomwe zimathandiza kuchepetsa ndalama zonse zomwe zimagwiritsidwa ntchito pomanga.
2. Kutsatira kwathunthu miyezo yapadziko lonse lapansi kuti ikhale yosavuta kugwiritsa ntchito
Zogulitsa zathu zikukwaniritsa zofunikira padziko lonse lapansi, kuphatikizapo EN 10025 (S355JR/S355JO) ndi ASTM A572 Gr 50. Mainjiniya ndi ogula amatha kuzigwiritsa ntchito mwachindunji ngati cholowa m'malo popanda kusintha zojambula zomangira, zomwe zimapewa ndemanga zowonjezera zaukadaulo ndi ndalama zosinthira.
3. Magwiridwe Odalirika a Makina ndi Chitetezo cha Kapangidwe
Popeza mphamvu yogwira ntchito imafika 355 MPa ndi mphamvu yokoka kuyambira 470 mpaka 630 MPa, matabwawa amapereka mphamvu yolimba yonyamula katundu, kulimba kopindika bwino komanso kukana kugwedezeka kwa nthaka. Timawongolera kwambiri kuchuluka kwa mpweya ndi mpweya wofanana ndi mpweya, kuonetsetsa kuti zinthu zogwiritsidwa ntchito m'fakitale komanso zomangamanga pamalopo zimagwirika bwino, ndikusunga nyumba zachitsulo kukhala zokhazikika komanso zolimba kwa nthawi yayitali.
4. Mankhwala Osiyanasiyana a Kumtunda kwa Madzi Osalowa M'madzi
Timapereka zinthu zosiyanasiyana zomalizitsa pamwamba: chitsulo chakuda chosaphika, choteteza dzimbiri komanso chotenthetsera madzi otentha. Chovala chofanana cha galvanizing chimapereka chitetezo champhamvu ku dzimbiri, chabwino kwambiri m'malo a m'mphepete mwa nyanja, chinyezi komanso ovuta a mafakitale. Chimatalikitsa nthawi yogwira ntchito komanso chimachepetsa nthawi yokonza zinthu nthawi zonse.
5. Kugulitsa Mwachindunji kwa Fakitale & Kuwongolera Kwabwino Kwambiri
Timachokera ku fakitale mwachindunji, timapereka mitengo yopikisana popanda kulembetsa kwapakati. Gulu lililonse limaphatikizidwa ndi satifiketi yoyesera ya mphero mogwirizana ndi EN 10204 3.1. Kuyang'aniridwa kwa anthu ena ndi SGS, BV, TUV ndi mabungwe ena ovomerezeka kumathandizidwa mokwanira, ndipo khalidwe la malonda limatha kutsatiridwa mokwanira.
Zachikhalidwe ndi Zamalonda:Zipilala zazitali zazitali, mabwalo a ndege, mabwalo amasewera, ndi makina omangira omwe adakonzedwa kale.
Zamalonda ndi Zogulitsa:Misewu yothamangira ndege ya crane yolemera, ma trus a fakitale, ndi nyumba zosungiramo katundu zokulirapo.
Zomangamanga ndi Mphamvu:Milatho ya msewu waukulu/njanji, malo oimika mapaipi a petrochemical, ndi nsanja zoyikira mphamvu ya dzuwa/mphepo.
Makina Oyendera Madzi ndi Olemera:Malo oimikapo madoko, mbali za nsanja za m'mphepete mwa nyanja, mafelemu a zida za migodi, ndi maziko omangira.
Ma phukusi Okhazikika:Kutumiza katundu woyenerera kuyenda panyanja. Womangidwa ndi zingwe zolimba zachitsulo kuti zigwiritsidwe ntchito bwino komanso kuti zinyamulidwe bwino.
Chitetezo cha pamwamba:Chopaka mafuta oletsa dzimbiri, chopaka primer, kapena chopaka galvanized chotentha malinga ndi zomwe kasitomala akufuna.
Kuzindikiritsa:Ma tag a zinthu zosalowa madzi omwe amamangiriridwa pa phukusi lililonse, kusonyeza nambala ya kutentha, mtundu, kukula, kutalika, ndi kulemera.
Njira Zotumizira:Amaperekedwa m'zombo zonyamula katundu wambiri (zonyamula katundu wambiri) kapena zopakidwa m'zombo za 20ft/40ft (zotalika mpaka 11.8m).
Mkhalidwe Wotumizira:Yotenthedwa kapena yolumikizidwa, yolondola bwino ndi Zikalata Zoyesera za Mill (yogwirizana ndi MTC ndi EN 10204 3.1).
Nthawi yotsogolera:Masiku 7-30, Kutumiza mwachangu mwachindunji ku fakitale, ndi kuwunika kwa anthu ena ndi SGS, BV, kapena TUV kothandizidwa mokwanira musanayike.
Q1: Kodi ma GB Q355B H-beams angalowe m'malo mwa EN S355JR ndi ASTM A572 Gr.50 mwachindunji?
A: Inde. Q355B imagwirizana ndi S355JR ndi ASTM A572 Gr.50 mu mawonekedwe a makina, ndi mphamvu yocheperako ya 345–355 MPa. Imagwira ntchito ngati njira yosinthira mwachindunji, yosafuna kusintha mawerengedwe a kapangidwe kake kapena zojambula zomangira.
Q2: Kodi kusiyana kwa kulimba kwa Q355B ndi S355JO ndi kotani?
A: Q355B ili ndi mayeso okhudzika kwa 20°C longitudinal impact test (≥34 J), ofanana ndi European S355JR grade. Pa mapulojekiti ozizira omwe amafuna muyezo wa S355JO (0°C impact resistance), titha kusintha zigawo zazing'ono zopangira zinthu panthawi yopanga kuti zikwaniritse zofunikira pakukhudzika kwa 0°C, ndi ziphaso zovomerezeka zovomerezeka zoyeserera mphero zomwe zaperekedwa kuti zitsimikizidwe.
Q3: Ndi kutalika kotani komwe kumaperekedwa, ndipo kumakhudza bwanji kutumiza?
A: Kutalika kwa katundu wathu nthawi zonse ndi 6m, 9m ndi 12m.
- Kutumiza chidebe: Kuti zigwirizane ndi zidebe zokhazikika za 20ft/40ft (kutalika kwamkati kwa 11.8m), tikupangira kutalika kosakwana 11.8m kuti tipewe mavuto okweza katundu.
- Kutumiza zombo zambiri: Kutalika konse kwa 12m ndi kukula kotalikirapo kulipo pa maoda akuluakulu a polojekiti.
Q4: Kodi mankhwala oletsa dzimbiri pamwamba alipo kuti agwiritsidwe ntchito panja?
A: Inde. Timapereka njira zosinthira zomaliza pamwamba pa ntchito zosiyanasiyana:
- Chitsulo chakuda chopanda kanthu: Chabwino kwambiri kuti chigwiritsidwe ntchito m'nyumba komanso chogwiritsidwanso ntchito pamalopo.
- Chophimba choteteza dzimbiri: Chimaletsa kukhuthala ndi dzimbiri panthawi yoyenda m'nyanja komanso kusungidwa kwakanthawi kochepa.
- Kuthira galvanizing m'madzi otentha: Kumapanga utoto wolimba komanso wolimba wa zinc kuti ukhale wolimba komanso wolimba kwa nthawi yayitali. Ndi chisankho chabwino kwambiri m'malo akunja a m'mphepete mwa nyanja, chinyezi, mafakitale komanso ovuta kuti ukhale nthawi yayitali.
Q5: Kodi khalidwe la malonda ndi kutsata kwathunthu kumatsimikizika bwanji?
A: Kutumiza konse kumathandiza kuti zinthu zitsatidwe bwino. Gulu lililonse limaperekedwa ndi satifiketi yovomerezeka ya EN 10204 3.1 mill, yomwe imafotokoza kuchuluka kwa kutentha, kapangidwe ka mankhwala, ndi deta ya magwiridwe antchito a makina. Timathandizanso mokwanira kuyika zitsanzo ndi kuyang'aniridwa ndi mabungwe ovomerezeka kuphatikiza SGS, BV ndi TUV.
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