Chitsulo Q195, Q235, kusiyana kwa zinthu?

Kodi pali kusiyana kotani pakati pa Q195, Q215, Q235, Q255 ndi Q275 pankhani yazinthu?

Chitsulo chopangidwa ndi mpweya ndiye chitsulo chogwiritsidwa ntchito kwambiri, chiwerengero chachikulu kwambiri chomwe chimakulungidwa kukhala chitsulo, mbiri ndi mbiri, nthawi zambiri sichiyenera kugwiritsidwa ntchito mwachindunji ndi kutentha, makamaka pamapangidwe ndi uinjiniya.

Q195, Q215, Q235, Q255 ndi Q275, etc., motero, amasonyeza kalasi ya zitsulo, zitsulo kalasi ndi woimira mfundo zokolola kalata (Q), zokolola mfundo mtengo, khalidwe, khalidwe ndi zizindikiro zina (A , B, C, D) deoxygenation njira ya zizindikiro ndi zina zotero mbali zinayi za sequential zikuchokera. Kuchokera pamapangidwe amankhwala, magiredi achitsulo pang'ono Q195, Q215, Q235, Q255 ndi Q275 amakalasi akulu, kuchuluka kwa kaboni, zomwe zili ndi manganese, kukhazikika kwake kumakhala kokhazikika. Mawotchi katundu ku mfundo, makalasi pamwamba amasonyeza kuti makulidwe ≤ 16mm wa mfundo zokolola zitsulo. Mphamvu zake zowonongeka zinali: 315-430, 335-450, 375-500, 410-550, 490-630 (obN / mm2); qi kutalika kwake kunali: 33, 31, 26, 24, 20 (0.5%). Choncho, poyambitsa zitsulo kwa makasitomala, makasitomala ayenera kukumbutsidwa kugula zipangizo zosiyanasiyana zazitsulo molingana ndi zofunikira zomwe zimapangidwira, kuti asakhudze khalidwe la mankhwala.

 

Kodi pali kusiyana kotani pakati pa zida za Q235A ndi Q235B?

Q235A ndi Q235B onse ndi zitsulo za carbon. Mu dziko muyezo GB700-88, Q235A ndi Q235B kusiyana zakuthupi makamaka mu carbon zili zitsulo, zinthu za Q235A zinthu mpweya zili mu 0.14-0.22 ﹪ pakati; Zinthu za Q235B sizimayesa kuyesa, koma nthawi zambiri zimayesa kuyesa kwa kutentha, V-notch. Poyerekeza, mawonekedwe amakina azitsulo za Q235B ndizabwino kwambiri kuposa chitsulo cha Q235A. Nthawi zambiri, mphero yachitsulo mu mbiri yomalizidwa musanachoke ku fakitale imalembedwa pa mbale yozindikiritsa. Ogwiritsa atha kudziwa ngati zinthuzo ndi Q235A, Q235B, kapena zida zina pacholembera.

 

Magiredi achitsulo aku Japan ndi SPHC, SPHD, ndi zina. Akutanthauza chiyani?

Japanese zitsulo (JIS mndandanda) sukulu wamba zitsulo structural makamaka tichipeza mbali zitatu: gawo loyamba limasonyeza zakuthupi, monga: S (Zitsulo) amatanthauza chitsulo, F (Ferrum) amatanthauza chitsulo. Gawo lachiwiri la mawonekedwe osiyanasiyana, mitundu, ntchito, monga P (mbale) mbaleyo, T (chubu), K (kogu) chida chimenecho. Gawo lachitatu la mawonekedwe a tebulo la nambala, makamaka mphamvu yocheperako. Monga: ss400 - woyamba s kuti zitsulo (Zitsulo), wachiwiri s kuti "kapangidwe" (Structuree), 400 kwa m'munsi mzere mphamvu 400Mpa wamba zitsulo structural. Pakati pawo: sphc ---- choyamba Chitsulo Chidule chidule, P kwa mbale Pate chidule, H kwa kutentha Kutentha chidule, Commercial chidule, lonse limasonyeza kuti ambiri otentha adagulung'undisa ndi zitsulo Mzere.

 

SPHD----- imatanthauza pepala lachitsulo chotenthedwa ndi chingwe chopondaponda.

SPHE------ amatanthauza mapepala otentha okulungidwa ndi mizere yojambula mozama.

SPCC------ amatanthauza pepala lozizira la zitsulo za kaboni ndi mzere wogwiritsidwa ntchito wamba, wofanana ndi kalasi ya China Q195-215A. Chilembo chachitatu C ndi chidule cha Cold, chomwe chimafunika kuonetsetsa kuti mayeso othamanga kumapeto kwa kalasi ndi T kwa SPCCT.

SPCD------ imasonyeza chitsulo chozizira cha carbon zitsulo ndi chingwe chachitsulo chokhomerera, chofanana ndi China 08AL (13237) yapamwamba ya carbon structural steel.

SPCE------ amatanthauza pepala lozizira lopiringizika la kaboni ndi chingwe chojambula mozama, chofanana ndi China 08AL (5213) chitsulo chokhomerera. Kuti muwonetsetse kuti sizikugwira ntchito, onjezani N ku SPCEN kumapeto kwa giredi.

Tsamba lachitsulo chozizira cha kaboni ndi mawonekedwe amizere, chikhalidwe chokhazikika cha A, chokhazikika cha S, 1/8 cholimba kwa 8, 1/4 cholimba kwa 4, 1/2 cholimba kwa 2.

Khodi yomaliza yapamwamba: palibe gloss finishing kwa D, gloss finishing kwa B. Monga SPCCT-SD imasonyeza kupsya mtima, palibe gloss yomaliza kuzizira pepala la kaboni lopangidwa kuti ligwiritsidwe ntchito. Kenako SPCCT-SB imawonetsa kupsya mtima, kumalizidwa bwino, pepala lozizira lopiringizika lozizira lomwe lili ndi zida zotsimikizika zamakina.