Mu ntchito za uinjiniya ndi zomangamanga, kusankha zipangizo zoyenera ndikofunikira kwambiri kuti zitsimikizire chitetezo, moyo wautali, komanso kugwiritsa ntchito ndalama moyenera. Muyezo wa ku EuropeEN10210imatchula zofunikira zaukadaulo zoperekera nyumba zomalizidwa ndi kutenthamagawo opanda kanthuZopangidwa ndi zitsulo zosapanga dzimbiri komanso zopanda ufa wabwino. Pakati pa mitundu yodziwika bwino ya zinthu ndi S355J0H ndi S355J2H. Ngakhale kuti ndi za m'banja limodzi ndipo zimagawana makhalidwe ambiri, kumvetsetsa kusiyana kwawo ndikofunikira kwambiri kuti zinthu zisankhidwe bwino. Nkhaniyi ikufotokoza za makhalidwe osiyanasiyana, kapangidwe ka mankhwala, magwiridwe antchito a makina, ndi momwe zinthu ziwirizi zimagwiritsidwira ntchito.

1. Kuzindikira Udindo wa Chitsulo

Dongosolo lodziyimira palokha limapereka zizindikiro zoyambirira za umunthu wawo ndi cholinga chawo. Malinga ndi EN 10027-1, mayinawa agawidwa motere:

S: Amayimira "Chitsulo Chomangira."

355: Imasonyeza mphamvu yocheperako yopezera mphamvu (mu megapascals, MPa) ya makulidwe mpaka 16 mm. Uku ndi kufanana kwakukulu pakati pa magiredi awiriwa.

J0 / J2: Gawoli limasonyeza kulimba kofunikira kwa mphamvu yogwira. "J0" imatanthauza kuti chinthucho chiyenera kupeza mphamvu yogwira yocheperako ya ma Joules 27 pa 0°C. "J2" imafuna mphamvu yogwira yocheperako ya ma Joules 27, koma pa kutentha kotsika kwa -20°C.

H: Amatanthauza "Magawo Opanda Maenje," makamaka omwe ali ndi ma energy otenthedwa, monga momwe muyezo wa EN10210 wafotokozera.

2. Kapangidwe ka Mankhwala: Kusintha Kochepa Kokhala ndi Mphamvu Yofunika

Zonse ziwiri za S355J0H ndi S355J2H ndi zitsulo zopangidwa ndi manganese zomwe zimadziwika kuti zimatha kusungunula bwino. Zofunikira pa kapangidwe ka mankhwala malinga ndi EN10210 ndizofanana kwambiri, koma pali kusiyana kwakukulu pakati pa malire ovomerezeka a sulfure (S), phosphorous (P), ndi machitidwe ochotsa oxidation, zomwe zimakhudza mwachindunji ukhondo wa chitsulocho komanso magwiridwe antchito otsika kutentha.

Mankhwala Opangira	S355J0H (Zachizolowezi % yokwera)	S355J2H (Zachizolowezi % yoposa)	Kusiyana kwa Kusiyana
Kaboni (C)	≤ 0.22	≤ 0.22	Zofanana; zimatsimikizira kulimba bwino komanso kusinthasintha.
Manganese (Mn)	≤ 1.60	≤ 1.60	Mofanana; zimathandiza kulimbitsa.
Silikoni (Si)	≤ 0.55	≤ 0.55	Mofanana; amagwira ntchito ngati deoxidizer.
Phosphorus (P)	≤ 0.035	≤ 0.030	J2H ili ndi malire okhwima, omwe amachepetsa kusweka.
Sulfure (S)	≤ 0.035	≤ 0.030	J2H ili ndi malire okhwima, zomwe zimapangitsa kuti ukhondo ndi kulimba zikhale bwino.
Nayitrogeni (N)	≤ 0.009	-	J2H nthawi zambiri imaphedwa kwathunthu (yomwe imakonzedwa ndi tirigu wabwino), zomwe zimapangitsa kuti kufunika kwa N value yayikulu kusakhale kofunikira.

Chofunika kwambiri ndichakuti S355J2H imafuna kuwongolera kwambiri zinyalala monga phosphorous ndi sulfure. Izi zimapangitsa kuti pakhale chitsulo choyera chokhala ndi kapangidwe kake kofanana, komwe ndikofunikira kuti chikhale cholimba kwambiri pa kutentha kwapansi pa zero. Kuphatikiza apo, S355J2H imagawidwa ngati chitsulo cha "FF" (chophedwa kwathunthu), zomwe zikutanthauza kuti chimakonzedwa ndi zinthu monga aluminiyamu kuti chipange kapangidwe ka tinthu tating'onoting'ono, komwe kamawonjezera kulimba. S355J0H nthawi zambiri ndi "FN" (chitsulo chozungulira sichiloledwa), chomwe sichimaletsa kwambiri.

3. Kapangidwe ka Makina: Kusiyana Kodziwika kwa Kulimba

Monga momwe chizindikiro cha giredi chikusonyezera, makhalidwe a makina, makamaka mphamvu ya kukhuthala ndi mphamvu yokoka, ndi ofanana kwambiri pa magulu onse awiri. Chosiyanitsa chachikulu ndi momwe amagwirira ntchito pamene akukhudzidwa ndi kugwedezeka kwa mphamvu pa kutentha kosiyanasiyana.

Katundu wa Makina	S355J0H	S355J2H
Mphamvu Yotulutsa (ReH)	≥ 355 MPa (t ≤ 16mm)	≥ 355 MPa (t ≤ 16mm)
Mphamvu Yokoka (Rm)	470 - 630 MPa (t ≤ 3mm)	470 - 630 MPa (t ≤ 3mm)
Kutalika (A)	≥ 22% (yaitali)	≥ 22% (yaitali)
Mphamvu Yokhudza Mphamvu (KV)	≥ 27 J @ 0°C	≥ 27 J @ -20°C

Kusiyana kumeneku kwa kutentha kwa mayeso okhuza mphamvu ndiye chinthu chofunikira kwambiri posankha pakati pa ziwirizi. Ngakhale kuti S355J0H ndi yolimba mokwanira pa ntchito zambiri zamkati ndi zakunja zotentha, S355J2H idapangidwa kuti isasweke mosavuta m'malo ozizira.

4. Ntchito ndi Zofunikira Zosankha

Kusankha pakati pa S355J0H ndi S355J2H kumatengera kwambiri kutentha kochepa kwa kapangidwe kake komanso kufunika kwa ntchitoyo.

S355J0H: Chisankho Chotsika Mtengo pa Nyengo Zotentha

Ntchito Zachizolowezi: Kapangidwe ka nyumba, mabwalo amasewera, mapulatifomu, ndi zida zamakanika m'madera omwe ali ndi nyengo yofatsa kapena yozizira komwe kutentha sikutsika kwambiri, ngati kulipo, pansi pa 0°C.

Ubwino: Imapereka mphamvu zabwino kwambiri komanso kusinthasintha pamtengo wotsika kuposa J2, zomwe zimapangitsa kuti ikhale chisankho chotsika mtengo pamapulojekiti omwe kutentha kochepa sikofunikira kwambiri.

S355J2H: Chisankho Chotetezeka pa Malo Ovuta Kwambiri ndi Ozizira

Ntchito Zachizolowezi: Nyumba za m'mphepete mwa nyanja, milatho m'mapiri kapena kumpoto, malo osungiramo zinthu ozizira, nsanja za mphepo, ndi chinthu chilichonse chomwe chimayikidwa mumlengalenga chomwe chimatha kunyamula katundu wambiri kutentha kochepa.

Ubwino: Mphamvu yake yotsimikizika pa -20°C imapereka chitetezo chofunikira kwambiri motsutsana ndi kusweka kwa ma brittle komwe kungachitike m'nyengo yozizira. Kapangidwe kake ka tirigu wofewa kamathandizanso pang'ono kuti zikhale zosavuta kusungunula komanso kuti zikhale zokhuthala.

Mapeto

Mwachidule, zonse ziwiriEN10210 S355J0Hndi S355J2H ndi zitsulo zapamwamba kwambiri, zomalizidwa bwino zomwe zimapatsa mphamvu yocheperako ya 355 MPa. Zimagawana mankhwala ofanana komanso zofunikira zofanana pakukoka ndi mphamvu yotulutsa. Komabe, sizisinthasintha nthawi zonse. S355J2H imadzisiyanitsa yokha kudzera mu kuwongolera kokhwima kwa zodetsa (P & S) ndi kapangidwe kake ka ufa wonse, kosalala, komwe kumatsimikizira kulimba kochepa kwa 27 Joules pa -20°C, poyerekeza ndi S355J0H's 27 Joules pa 0°C. Pa mapulojekiti omwe ali m'malo ozizira kapena omwe amafunikira chitetezo chapamwamba motsutsana ndi kusweka kwa brittle, S355J2H ndiyo njira yofunika, ngakhale yokwera mtengo pang'ono. Pakugwiritsa ntchito m'malo otentha, S355J0H ikadali njira yodalirika komanso yotsika mtengo.