Cold-Formed Steel
Simbi inotonhora-yakaumbwa inoreva akasiyana-siyana akaomesesa-chikamu-chikamu profiles akagadzirwa kubva kune inopisa-yakakungurutswa kana inotonhora-yakakungurutswa strip simbi pasi pekumanikidzwa kugadzirisa patembiricha yekamuri.Iyo inozivikanwawo sesimbi yakatetepa-yakakomberedzwa, imhando yechiedza chekuvaka simbi yekuvaka.Simbi inotonhora yakagadzirwa kwemakore anopfuura 100, uye yakatanga kugadzirwa pamuchina mumwe chete une muchina wekupeta.Muna 1910, United States yakatanga kuvaka chikwata chekutanga chekugadzira roll.Mushure me1960, simbi inotonhora yakagadzirwa nekukurumidza.Muna 1989, goho rayo repagore repasi rose rakasvika matani 8 miriyoni, nemhando dzinopfuura 10 000 uye zvakatemwa.Kubuda kwesimbi inotonhora-yakaumbwa munyika dzakabudirira inosvika 5% yehuwandu hwekubuda kwesimbi.China yakavaka chikwata chayo chekutanga chekugadzira simbi inotonhora muShanghai muna 1958. Pakupera kwema1980, pakanga pane zvikamu zvinopfuura makumi matatu zvekugadzira, zvichigadzira marudzi anoda kusvika zana uye kubuda kwegore kwematani anopfuura 200,000 esimbi inotonhora.
Cold-formed steel imhando ye economical cross-section, light-weight thin-walled steel, inonziwo steel refrigerated steel kana cold-formed steel.Cold-formed steel ndicho chinhu chikuru chekugadzira zvivakwa zvesimbi zvakareruka.Iine akasiyana-siyana e-ultra-thin, anonzwisisika uye akaoma-muchinjika-zvikamu zvisingakwanisi kugadzirwa nekupisa kutenderera.Kuenzaniswa nesimbi inopisa-yakaputirwa, mumamiriro ezvinhu akafanana e-cross-sectional area, radius ye gyration inogona kuwedzerwa ne50% kusvika ku60%, uye nguva ye inertia yechikamu inogona kuwedzerwa ne 0.5 kusvika ku3. simba rezvinhu rinogona kushandiswa zvakanyanya;(Kureva kuti, chimiro chesimbi chakagadzirwa chekare I-beam, chiteshi simbi, kona simbi uye ndiro yesimbi) inogona kuchengetedza inenge 30% kusvika 50% yesimbi.Mune zvimwe zviitiko, chiyero chesimbi chinoshandiswa muzvivako zvesimbi zvinotonhora zvakaenzana nekugadzirwa kwekrete yakasimbiswa pasi pemamiriro akafanana, iyo chikamu chehupfumi chesimbi.
Simbi inotonhora-yakaumbwa ine zvakawanda zvekushandisa, uye inowanzo shandiswa kugadzira zvikamu zvezvimiro uye zvikamu zvekubatsira mumadhipatimendi ekugadzira akadai sekuvaka, mota dzenjanji, mota, uye ngarava.
Kune mhando dzakawanda dzesimbi inotonhora, yakakamurwa kuita yakavhurika, semi-yakavharwa uye yakavharwa muchinjika-chikamu maumbirwo.Zvigadzirwa zvikuru zvinotonhora-yakaumbwa chiteshi simbi, kona simbi, Z-yakaita simbi, inotonhora-yakaumbwa marata ndiro, sikweya pombi, rectangular pombi, yemagetsi welded yakakosha-yakaita simbi pombi, rolling shutter gonhi Mira.Simbi inotonhora-yakaumbwa kazhinji inogadzirwa ine ukobvu hwe6mm kana kushoma uye hupamhi hwe500mm kana pasi.Zvinowanzo shandiswa munyika yedu equilateral angle simbi (kureba kwegumbo 25～75mm), yemukati curling angle simbi (kureba kwegumbo 40～75mm), chiteshi simbi (yakakwirira 25～250mm), yemukati curling chiteshi simbi (yakakwirira 60～250mm), kupeta Z-yakaita simbi (100～180mm yakakwirira) uye anopfuura mazana mana ekutsanangurwa uye marudzi.Zvigadzirwa zvinoshandiswa zvakanyanya mumigodhi, kuvaka, michina yekurima, zvekufambisa, mabhiriji, petrochemical, chiedza indasitiri, zvemagetsi uye mamwe maindasitiri.
Simbi inotonhora-yakaumbwa ndicho chinhu chikuru chekugadzira zvimiro zvesimbi zvakareruka, uye inogadzirwa nesimbi inotonhora-yakaumbwa ndiro kana simbi mitsetse.Ukobvu hwayo hwemadziro haugone kungoitwa mutete zvakanyanya, asi zvakare unorerutsa zvakanyanya maitiro ekugadzira uye anovandudza kugadzirwa kwakanaka.Inogona kuburitsa maprofile akasiyana-siyana uye inotonhora-yakaumbwa masimbi emhando dzakasiyana-siyana ane yunifomu yemadziro ukobvu, ayo akaoma kuburitsa neyakajairwa inopisa yekukungurusa nzira, asi neakaomesesa-sectional maumbirwo.Pamusoro pekushandiswa muzvivakwa zvakasiyana-siyana zvekuvaka, simbi inotonhora inoshandiswawo zvakanyanya mukugadzira mota uye kugadzira michina yekurima.Kune mhando dzakawanda dzesimbi inotonhora, iyo yakakamurwa kuva yakazaruka, semi-yakavharwa uye yakavharwa maererano nechikamu.Zvinoenderana nechimiro, kune inotonhora-yakaumbwa chiteshi simbi, angle simbi, Z-yakaita simbi, square chubhu, rectangular chubhu, special-shaped chubhu, rolling shutter gonhi, etc. Yazvino chiyero 6B/T 6725-2008 yakawedzera goho simba kupatsanurwa kweinotonhora-yakaumbwa zvigadzirwa zvesimbi, yakawedzera yakanatswa-grained simbi, uye yakawedzera iyo chaiyo yekuongorora zviratidzo zvemichina yezvigadzirwa zvechigadzirwa.
