Munyaya dzekuvaka nekugadzira, kusarudza zvinhu zvakakodzera ndiko kwakakosha pakuchengetedza, kurarama kwenguva refu, uye kuchengetedza mari. Mutemo weEuropeEN10210inotsanangura mamiriro ekutumira kwehunyanzvi hwezvivakwa zvinopisa zvakapedzwazvikamu zvisina chinhuyakagadzirwa nesimbi dzisina alloy nesimbi dzakapfava. Pakati pemhando dzinonyanya kutaurwa ndiS355J0H neS355J2H. Kunyange zvazvo dziri dzemhuri imwe chete uye dzine hunhu hwakawanda, kunzwisisa kusiyana kwadzo kwakakosha pakusarudza zvinhu zvakanaka. Chinyorwa chino chinotarisa hunhu hwakasiyana, makemikari, mashandiro emakanika, uye mashandisirwo akajairika emagiredhi maviri aya esimbi.

1. Kutsanangura Chimiro cheSimbi

Sisitimu yemazita pachayo ndiyo inopa zviratidzo zvekutanga zvekuzivikanwa kwavo nechinangwa chavo. Sekureva kweEN 10027-1, mazita acho akapatsanurwa seizvi:

S: Zvinoreva "Simbi Yekuvaka."

355: Inoratidza simba shoma rekukura (mu megapascals, MPa) kune ukobvu hunosvika 16 mm. Uku kufanana pakati pemagiredhi maviri aya.

J0 / J2: Chikamu ichi chinoratidza kusimba kwesimba rinodiwa. "J0" zvinoreva kuti chinhu chinofanira kuwana simba resimba resimba remaJoules makumi maviri nemanomwe pa0°C. "J2" inoda simba resimba resimba remaJoules makumi maviri nemanomwe, asi patembiricha yakaderera ye -20°C.

H: Inoreva "Zvikamu zvisina chinhu," kunyanya izvo zvakapedzwa nekupisa, sezvinotsanangurwa neEN10210 standard.

2. Kuumbwa kweMakemikoro: Kusiyana Kudiki Kune Simba Rinokosha

Zvese S355J0H naS355J2H isimbi dzine manganese dzinozivikanwa nekugona kwadzo kusundira zvakanaka. Zvinodiwa pakuumbwa kwemakemikari zvichienderana neEN10210 zvakafanana zvikuru, asi misiyano yakakosha iripo mumiganhu inobvumirwa yesarufa (S), phosphorus (P), uye nzira yekubvisa oxidation, izvo zvinopesvedzera zvakananga kuchena kwesimbi uye kushanda kwayo pakupisa kwakaderera.

Chinhu cheKemikari	S355J0H (Yakajairika % yepamusoro)	S355J2H (Yakajairika % yepamusoro)	Zvinoreva Musiyano
Kabhoni (C)	≤ 0.22	≤ 0.22	Zvakafanana; zvinoita kuti irambe yakasimba uye ichikwanisa kusundirwa.
Manganese (Mn)	≤ 1.60	≤ 1.60	Zvakafanana; zvinobatsira kusimba.
Silikoni (Si)	≤ 0.55	≤ 0.55	Zvakafanana; inoshanda se deoxidizer.
Phosphorus (P)	≤ 0.035	≤ 0.030	J2H ine muganho wakasimba, zvichideredza kuputsika.
Sarufa (S)	≤ 0.035	≤ 0.030	J2H ine muganho wakasimba, zvichivandudza kuchena uye kusimba.
Nitrogen (N)	≤ 0.009	-	J2H inowanzo urayiwa zvizere (yakagadziriswa zviyo zvakanaka), zvichibvisa kukosha kweN yepamusoro.

Chinhu chikuru ndechekuti S355J2H inoda kudzora tsvina zvakanyanya senge phosphorus nesarufa. Izvi zvinoita kuti simbi yakachena ive nechimiro chakafanana, izvo zvakakosha kuti ikwanise kusimba zvakanaka pakupisa kusingasviki zero. Uyezve, S355J2H inoiswa muchikamu chesimbi "FF" (Yakaurayiwa zvizere), zvichireva kuti inobatwa nezvinhu zvakaita searuminiyamu kuti igadzire chimiro chegorosi rakatsetseka, izvo zvinovandudza kusimba. S355J0H inowanzova "FN" (simbi yerimming haibvumidzwe), iyo isinganyanyi kuoma.

3. Hunhu hweMichina: Musiyano Unokosha Mukusimba

Sezvinoratidzwa nechiratidzo chegiredhi, hunhu hwemuchina, kunyanya goho uye simba rekudhonza, zvakafanana pamhando dzese dziri mbiri. Chinhu chinonyatsosiyanisa mashandiro adzo pasi pekukanda simba pakupisa kwakasiyana.

Zvivakwa zveMechanical	S355J0H	S355J2H
Simba reKubereka (ReH)	≥ 355 MPa (t ≤ 16mm)	≥ 355 MPa (t ≤ 16mm)
Simba Rekusimba (Rm)	470 - 630 MPa (t ≤ 3mm)	470 - 630 MPa (t ≤ 3mm)
Kureba (A)	≥ 22% (refu)	≥ 22% (refu)
Simba reMhedzisiro (KV)	≥ 27 J @ 0°C	≥ 27 J @ -20°C

Musiyano uyu mukupisa kwekuyedza kunokanganisa ndiwo chinhu chimwe chete chakakosha pakusarudza pakati pezviviri izvi. Kunyange zvazvo S355J0H yakasimba zvakakwana kune akawanda mashandisirwo ekunze emukati nekunze ane mwero, S355J2H yakagadzirwa kuti irambe ichityoka kana yapwanyika munzvimbo dzinotonhora.

4. Mashandisirwo uye Maitiro Ekusarudza

Sarudzo pakati peS355J0H neS355J2H inonyanya kuenderana nekupisa kwakaderera kwesevhisi yechivakwa uye kukosha kwekushandiswa kwacho.

S355J0H: Sarudzo Inoshanda Pamutengo Wemamiriro Ekunze Ane Mwero

Mashandisirwo Akajairika: Kuvakwa kwezvivakwa, nhandare dzemitambo, mapuratifomu, uye zvikamu zvemakanika munzvimbo dzine mamiriro ekunze akapfava kana ane mwero apo tembiricha dzisingawanzo kudonha, kana dzichimbosvika, pasi pe0°C.

Zvakanakira: Inopa simba rakanaka uye kugona kuchinjika pamutengo wakaderera pane J2, zvichiita kuti ive sarudzo inodhura zvishoma kumapurojekiti asina kunyanya kukosha kana tembiricha yakaderera.

S355J2H: Sarudzo Yakachengeteka Yenzvimbo Dzinoda Zvinhu Zvikuru Uye Dzinotonhora

Mashandisirwo Akajairika: Zvivakwa zvekunze kwegungwa, mabhiriji ari munzvimbo dzine makomo kana kuchamhembe, nzvimbo dzekuchengetera zvinhu zvinotonhora, mashongwe emhepo, uye chero chinhu chemuumbi chinogona kudzorwa nemhepo mumamiriro ekunze akaderera.

Zvakanakira: Kushanda kwayo nesimba pa -20°C kunopa mukana wakakosha wekuchengetedza kubva pakuputsika kwakaipisisa kwesimbi munzvimbo dzinotonhora. Maumbirwo ezviyo zvakapfava anobatsirawo zvishoma pakuvandudza kuchinjika kwayo uye kugona kwayo kukora.

Mhedziso

Muchidimbu, zvoseEN10210 S355J0Huye S355J2H isimbi dzemhando yepamusoro, dzakapedzwa nekupisa dzakagadzirwa nesimbi dzine maburi emhando yepamusoro dzinopa simba rekugadzira re355 MPa. Dzine makemikari akafanana uye dzinoda simba rekusunga uye kugadzira rekugadzira rakafanana. Zvisinei, hadzichinjiki mumamiriro ese ezvinhu. S355J2H inozvisiyanisa kuburikidza nekudzora kusvibiswa kwakasimba (P & S) uye chimiro chakaurayiwa zvizere, chegorosi rakapfava, icho chinovimbisa kusimba kwesimba re27 Joules pa -20°C, zvichienzaniswa neS355J0H's 27 Joules pa0°C. Kune mapurojekiti ari munzvimbo dzinotonhora kana ayo anoda mukana wekuchengetedza wakakwira kubva pakuputsika kwebrittle, S355J2H ndiyo sarudzo inodiwa, kunyangwe ichidhura zvishoma. Kune mashandisirwo akajairika munzvimbo dzine mamiriro ekunze anodziya, S355J0H inoramba iri sarudzo yakavimbika uye isingadhuri.