1. Dab tsi cov khoom yog tu42b steel yeeb nkab ua los ntawm?
TU42B yog ib tug neeg siv cov yeeb nkab tau teev nyob rau hauv Suav GB / T 8162 tus qauv thiab zoo ib yam li A106 GR.B). Lub "tu" nyob rau hauv nws cov qauv sawv ntsug rau "universal seamless steel yeeb nkab ntawm 420 MPA lossis siab dua, thiab" B "sawv daws yuav tsum tau zoo tshaj plaws). Nws cov tshuaj lom neeg muaj pes tsawg leeg yog feem ntau cov pa roj carbon (c) thiab manganese (mn), nrog cov sulfur thiab phosphorus tsawg, uas ua rau muaj kev ua tau zoo tag nrho.
2. Dab tsi yog nws cov yam ntxwv tseem ceeb?
Nruab nrab - lub zog siab: tensile lub zog ntawm 420-600 mpa, tawm los ntawm 245 MPa;
Zoo plasterity: elongation ntau dua los yog sib npaug 25%, haum rau kev sib tsoo lossis flaring;
Zoo weldability: tuaj yeem koom nrog siv cov pa arc vuam lossis roj vuam, tab sis tshav kub yuav tsum tau tswj kom tsis txhob muaj embrittlement.
3. Dab tsi yog cov ntawv thov raug? Nws yog feem ntau siv rau tsawg - kev thauj cov dej thiab cov kev ua kom dav dav, xws li:
Tsim scaffolding thiab txhawb nqa qauv;
Tsawg -} Kev Siv Siab Rau Dej Rau Dej, Roj, thiab Roj;
Tsis - high {{1} LOAD cov khoom siv xws li Shafts thiab cov zaub hauv cov khoom siv tshuab.
4. Dab tsi yog qhov txawv ntawm Tu42A thiab lwm qib?
Piv rau TU42A: Tu42b muaj cov ntsiab lus sulfur thiab phosphorus qis dua (tsawg dua los yog sib npaug rau 0.035%), txhim kho kev cuam tshuam rau 0.035%), txhim kho rau ntau qhov chaw xav tau.
Piv rau Alloy Steel Yeeb Nkab: Tu42B tsis tshua kim, tab sis nws siab {1} {1} kub heev yog cov tsis muaj zog dua alloy steels (xws li 15crmo).
5. Kev ua thiab kev siv ceev faj?
Txiav thiab tsim: Plasma lossis pom kev txiav yog tau. Dabtsi yog khoov nrog lub vojvoog ntau dua lossis sib npaug rau 2 zaug ntawm cov kab ntsig lub taub yog pom zoo.
Isti {- corrosion kev kho: rau kev siv hauv noo noo, cov tshuaj tua kab tsuag- xeb pleev xim lossis galvanize.
Txuj ci ua raws: Thaum kev yuav khoom, paub meej ua raws li GB / T 8162-2018 thiab xyuas cov chaw tsim khoom lag luam.
