Nkhani - Zopangira Zitsulo Zoyaka Zotentha: Chofunikira Kwambiri pa Industrial Field

M'dongosolo lamakono la mafakitale, zitsulo zazitsulo zotentha ndizomwe zimakhala zofunikira, ndipo kusiyana kwawo kwa zitsanzo ndi kusiyana kwa machitidwe kumakhudza mwachindunji kayendetsedwe ka chitukuko cha mafakitale akumunsi. Mitundu yosiyana siyana yazitsulo zachitsulo zotentha zimagwira ntchito yosasinthika m'magawo omanga, magalimoto, mphamvu, ndi zina zotero. Zotsatirazi zidzayang'ana pa kusanthula mitundu yazitsulo zachitsulo zotentha zomwe zimafuna kwambiri msika komanso kusiyana kwawo kwakukulu.

Basic Main Force: Q235B ndi SS400
Q235B ndi chitsulo chochepa kwambiri cha carbon structural steel ku China, chokhala ndi mpweya pafupifupi 0.12% -0.20%, ndipo chimakhala ndi pulasitiki yabwino komanso kuwotcherera. Mphamvu zake zokolola ndi ≥235MPa ndipo zimagwiritsidwa ntchito kwambiri pomanga mafelemu, zothandizira mlatho ndi zida zonse zamakina. M'makampani omanga, matabwa, zitsulo zamakina ndi zitsulo zina zopangidwa ndi Q235B zopangira zitsulo zotentha zotentha zimakhala zoposa 60%, zomwe zimathandizira mafupa a zomangamanga zamatawuni.
SS400 ndi chitsulo chopangidwa ndi mpweya chomwe chimagwiritsidwa ntchito padziko lonse lapansi chokhala ndi mphamvu zofanana ndi Q235B, koma kuwongolera mwamphamvu zodetsa za sulfure ndi phosphorous komanso mtundu wabwino wa pamwamba. Pakumanga zombo zapamadzi, ma SS400 ozungulira otentha nthawi zambiri amagwiritsidwa ntchito pazigawo zamapangidwe. Kukaniza kwake kwa dzimbiri m'madzi am'nyanja ndikwabwinoko kuposa chitsulo wamba wamba, kuwonetsetsa chitetezo cha maulendo apanyanja.

Koyilo Yachitsulo Yotentha - Gulu la Royal

Oimira amphamvu kwambiri: Q345B ndi Q960
Q345B ndi chitsulo chochepa cha alloy champhamvu kwambiri chokhala ndi 1.0% -1.6% manganese owonjezera, ndipo mphamvu zokolola zili pamwamba pa 345MPa. Poyerekeza ndi Q235B, mphamvu zake zimachulukitsidwa ndi pafupifupi 50%, ndikusunga kutsekemera kwabwino. Mu engineering ya mlatho, ma girders a bokosi opangidwa ndi Q345B zitsulo zotentha zotentha zimatha kuchepetsa kulemera ndi 20%, kuchepetsa kwambiri ndalama zauinjiniya. Mu 2023, ntchito yomanga mlatho wapakhomo idzawononga matani oposa 12 miliyoni a Q345B yotentha yotentha, zomwe zimapanga 45% ya zotulutsa zonse zamtunduwu.
Monga woyimira zitsulo zolimba kwambiri, Q960 imapeza mphamvu zokolola za ≥960MPa kudzera muukadaulo wa microalloying (kuwonjezera vanadium, titaniyamu ndi zinthu zina) ndi njira zoziziritsa zoyendetsedwa bwino. Pamakina opanga makina, makulidwe a mkono wa crane wopangidwa ndi Q960 koyilo yotentha yotentha imatha kuchepetsedwa mpaka 6mm, ndipo mphamvu yonyamula katundu imachulukitsidwa ndi nthawi za 3, zomwe zimathandizira kukweza kopepuka kwa zida monga zofukula ndi ma cranes.

Kolo Wachitsulo Wotentha Wokulungidwa (24)

Benchmark yapadera: SPHC ndi SAPH340
SPHC ndi mankhwala apamwamba pakati pa zitsulo zotentha zotentha za carbon. Mwa kukhathamiritsa njira yogubuduza kuti muwongolere kukula kwambewu, elongation imafika kupitilira 30%. M'makampani opanga zida zapanyumba, ma coil otenthedwa ndi SPHC amagwiritsidwa ntchito popanga nyumba zopangira firiji. Kujambula kwake kozama kumatsimikizira kuti mulingo woyenera wa mawonekedwe opindika opindika umaposa 98%. Mu 2024, kugwiritsidwa ntchito kwa ma coils otenthetsera a SPHC m'munda wa zida zapanyumba kudzakwera ndi 15% pachaka mpaka matani 3.2 miliyoni.
Monga zitsulo zamagalimoto zamagalimoto, SAPH340 imakwaniritsa bwino pakati pa mphamvu ndi kulimba powonjezera 0.15% -0.25% carbon ndi trace boron. Popanga mafelemu a batire yagalimoto yamphamvu, SAPH340 ma koyilo otenthetsera amatha kupirira katundu wopitilira 500MPa ndikukwaniritsa zofunikira pakuwotcherera malo. Mu 2023, kuchuluka kwa ma coils otenthetsera amtunduwu omwe amagwiritsidwa ntchito m'magalimoto amagetsi atsopano afika pa 70% ya magawo a batire.

Chitsanzo	Mphamvu zokolola (MPa)	Elongation (%)	Zochitika Zofananira za Ntchito
Q235B	≥235	≥26	Zomangamanga, makina ambiri
Q345B	≥345	≥21	Milatho, zotengera zokakamiza
Mtengo SPHC	≥275	≥30	Zida zapanyumba, zida zamagalimoto
Q960	≥960	≥12	Makina a engineering, zida zapamwamba kwambiri