12L14 Dawb-txiav Steel Bar

A steel nrog ntau dua li ib txwm cov ntsiab lus ntawm leej faj thiab phosphorus npaj rau fabrication ntawm qhov chaw rau high-ceev tsis siv neeg thiab semiautomatic tshuab cuab yeej. Dawb-txiav steel yog tsim nyob rau hauv daim ntawv ntawm rods, thiab nws muaj 0.08-0.45% carbon, 0.15-0.35% silicon, 0.6-1.55% manganese, 0.08-0.30% sulfur thiab 0.05-0.16% phosphorus. Cov ntsiab lus ntawm cov sulfur siab ua rau tsim cov inclusions (piv txwv li, manganese sulfide) pov tseg raws cov nplej. Cov kev suav nrog no pab txhawb kev sib tsoo thiab txhawb kev sib tsoo thiab yooj yim nti tsim. Rau cov hom phiaj no, dawb-txiav steel yog qee zaum alloyed nrog txhuas thiab tellurium.

12L14 yog ib hom resulfurized thiab rephosphorized carbon steel rau dawb-txiav thiab machining daim ntaub ntawv. Cov qauv hlau (tsis siv neeg hlau) muaj kev ua haujlwm zoo heev thiab lub zog qis dua vim yog cov hlau alloying xws li Sulfur thiab Lead, uas tuaj yeem txo qhov kev ua haujlwm siab thiab txhim kho qhov tiav thiab qhov tseeb ntawm cov khoom siv. 12L14 steel tau siv dav hauv kev tsim cov cuab yeej ntsuas qhov tseeb, qhov chaw tsheb thiab qhov tseem ceeb ntawm ntau yam ntawm cov tshuab, raug siv xws li bushings, shafts, inserts, couplings, fittings thiab lwm yam.