Nhau - Makoiri eSimbi Anopfurwa Nemoto: Chinhu Chinokosha Mumunda Wemaindasitiri

Muhurongwa hwemazuva ano hwemaindasitiri, ma coil esimbi anopfurwa nekupisa zvinhu zvepakutanga, uye kusiyana kwemamodheru avo uye kusiyana kwekushanda kwavo zvinokanganisa zvakananga mafambiro ekugadzirwa kwemaindasitiri ari pasi. Mamodheru akasiyana e coil esimbi anopfurwa nekupisa anoita basa risingatsiviwi muminda yekuvaka, mota, simba, nezvimwewo nemakemikari avo akasiyana uye hunhu hwemakanika. Zvinotevera zvichatarisa pakuongorora mamodheru e coil esimbi anopfurwa nekupisa ane kudiwa kwakanyanya pamusika uye musiyano wawo mukuru.

Simba Guru reBasic: Q235B neSS400
Q235B ndiyo simbi inonyanya kushandiswa muChina ine kabhoni shoma iri pakati pe0.12% ne0.20%, uye ine plasticity yakanaka uye hunhu hwekusveta. Simba rayo rekugadzira i≥235MPa uye inoshandiswa zvakanyanya mukuvaka mafuremu, mabhiriji anotsigira uye zvikamu zvemakanika. Muindasitiri yekuvaka, maI-beams, machannel steels nedzimwe simbi dzakagadzirwa neQ235B hot-rolled steel coils dzinopfuura 60%, dzichitsigira skeleton yezvivakwa zvemaguta.
SS400 isimbi inoshandiswa pasi rose inoshandiswa pasi rose ine simba rakafanana neQ235B, asi ine simba rakasimba rekudzora tsvina yesarufa nephosphorus uye ine hunhu huri nani pamusoro penzvimbo. Mubasa rekuvaka ngarava, SS400 hot-rolled coils inowanzo shandiswa pazvikamu zvekuvaka ngarava. Kudzivirira kwayo ngura mumvura yegungwa kuri nani pane simbi yakajairwa yekabhoni, zvichiita kuti rwendo rwemugungwa ruve rwakachengeteka.

Coil yeSimbi Inopisa Yakamonerwa - Royal Group

Vamiririri vane simba guru: Q345B neQ960
Q345B isimbi ine simba rakawanda ine 1.0%-1.6% yemanganese yakawedzerwa, uye simba remukoho riri pamusoro pe345MPa. Kana ichienzaniswa neQ235B, simba rayo rinowedzerwa neinenge 50%, uku ichiramba ichichinjika zvakanaka. Mukugadzira mabhiriji, mabhokisi egirders akagadzirwa neQ345B hot-rolled steel coils anogona kuderedza huremu ne20%, zvichideredza zvakanyanya mari yeinjiniya. Muna 2023, kuvaka mabhiriji epamba kuchashandisa matani anopfuura mamiriyoni gumi nemaviri eQ345B hot-rolled coils, zvichiita 45% yehuwandu hwese hwemhando iyi.
Semumiriri wesimbi ine simba rakawanda, Q960 inowana simba rekugadzira re ≥960MPa kuburikidza netekinoroji ye microalloying (kuwedzera vanadium, titanium nezvimwe zvinhu) uye maitiro ekudzora nekudzora ekutonhodza. Mumichina yeinjiniya, ukobvu hweruoko rwe crane rwakagadzirwa ne Q960 hot-rolled coil hunogona kuderedzwa kusvika pasi pe 6mm, uye simba rekutakura mutoro rinowedzerwa nekatatu, izvo zvinokurudzira kuvandudzwa kwemidziyo yakaita sema excavators nema cranes.

Chiratidzo Chakakosha: SPHC neSAPH340
SPHC chigadzirwa chepamusoro-soro pakati pesimbi dzinopisa dzakaputirwa nekabhoni shoma. Nekugadzirisa maitiro ekutenderedza kuti adzore saizi yetsanga, kureba kwacho kunosvika pamusoro pe30%. Muindasitiri yemidziyo yemumba, macoil eSPHC anopisa akaputirwa anoshandiswa kugadzira macompressor housings efriji. Kushanda kwayo kwakadzika kunovimbisa kuti mwero wakakodzera wekugadzirwa kwenzvimbo dzakakombama dzakakombama unodarika 98%. Muna 2024, kushandiswa kweSPHC hot-rolled coils mumunda wemidziyo yemumba kuchawedzera ne15% gore negore kusvika pamatani mamiriyoni 3.2.
Sesimbi yesimbi yemotokari, SPH340 inowana chiyero pakati pesimba nekusimba nekuwedzera 0.15%-0.25% kabhoni uye trace boron. Mukugadzira mafuremu emabhatiri emotokari itsva, macoil eSAPH340 anopfurwa nemoto anogona kutsungirira mitoro inoshanduka inodarika 500MPa uye kuzadzisa zvinodiwa nemaitiro ekugadzirisa simbi. Muna 2023, huwandu hwemacoil anopfurwa nemoto emhando iyi hunoshandiswa mumotokari itsva dzemagetsi epamba hwasvika 70% yezvikamu zvebhatiri.

Muenzaniso	Simba reKubereka (MPa)	Kureba (%)	Maitiro Akajairika Ekushandisa
Q235B	≥235	≥26	Zvivako zvekuvaka, michina yakajairika
Q345B	≥345	≥21	Mabhiriji, midziyo yekumanikidza
SPHC	≥275	≥30	Midziyo yepamba, zvikamu zvemota
Q960	≥960	≥12	Michina yeinjiniya, michina yepamusoro-soro