Kodi mulingo wa ASTM pa tchanelo C ndi chiyani?

Pomanga ndi kumanga, kugwiritsa ntchito zitsulo zachitsulo (zomwe nthawi zambiri zimatchedwa C-gawo zitsulo) ndizofala kwambiri. Makanemawa amapangidwa ndi chitsulo ndipo amapangidwa ngati C, motero amatchedwa. Amagwiritsidwa ntchito kwambiri pantchito yomanga ndipo ali ndi ntchito zambiri. Pofuna kuonetsetsa kuti khalidwe ndi ndondomeko zazitsulo za C-gawo zikusungidwa, American Society for Testing and Materials (ASTM) imapanga miyezo ya zinthuzi.

Muyezo wa ASTM waChitsulo chooneka ngati Cimatchedwa ASTM A36. Muyezo uwu umakhudza mawonekedwe achitsulo cha carbon zitsulo kuti agwiritsidwe ntchito pomanga milatho ndi nyumba ndi zomangika. Muyezo uwu umatchula zofunikira pakupanga, makina ndi zinthu zina zofunika za carbon steel C-gawo.

Chimodzi mwazofunikira za ASTM A36 muyezo waC-channel zitsulondi mankhwala achitsulo omwe amagwiritsidwa ntchito popanga. Muyezo umafunikira chitsulo chogwiritsidwa ntchito kuti magawo C akhale ndi milingo yodziwika ya kaboni, manganese, phosphorous, sulfure ndi mkuwa. Zofunikira izi zimatsimikizira kuti zitsulo zomwe zimagwiritsidwa ntchito mu C-channel zimakhala ndi zofunikira kuti zipereke mphamvu ndi kukhazikika kofunikira pakugwiritsa ntchito zomangamanga.

Kuphatikiza pakupanga mankhwala, muyezo wa ASTM A36 umanenanso za makina achitsulo omwe amagwiritsidwa ntchito muzitsulo za C-gawo. Izi zikuphatikizapo zofunikira za mphamvu zokolola, mphamvu zamakokedwe ndi elongation yachitsulo. Zinthuzi ndizofunikira kuti zitsimikizire kuti chitsulo cha C-channel chili ndi mphamvu zofunikira komanso ductility kuti zithe kupirira zolemetsa ndi zovuta zomwe zimachitika pomanga.

Muyezo wa ASTM A36 umakhudzanso kulolerana kwapang'onopang'ono komanso kuwongoka ndi zofunikira zopindika pazitsulo za C-gawo. Izi zikuwonetsetsa kuti magawo a C opangidwa motere amakwaniritsa kukula ndi mawonekedwe ofunikira kuti agwiritse ntchito pomanga.

Ponseponse, muyezo wa ASTM A36 wachitsulo chooneka ngati C umapereka mndandanda wazinthu zofunikira pazabwino ndi magwiridwe antchito azitsulozi. Potsatira mulingo uwu, opanga amatha kuwonetsetsa kuti magawo a C omwe amatulutsa akukwaniritsa zofunikira pakumanga.

Mwachidule, muyezo wa ASTM waC-channel zitsuloASTM A36, yomwe imadziwika kuti ASTM A36, imatchula zofunikira pakupanga mankhwala, makina, komanso kulekerera kwazitsulo izi. Pokwaniritsa zofunikirazi, opanga amatha kupanga magawo apamwamba a C omwe amakwaniritsa zofunikira pa ntchito zosiyanasiyana zomanga. Kaya ndi milatho, makina opangira mafakitale kapena nyumba, kutsatira miyezo yachitsulo ya ASTM C-gawo zimatsimikizira chitetezo ndi kudalirika kwazitsulo zomwe zimagwiritsidwa ntchito.