2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Txawm tias qis carbon steels tsis teb rau quench hardening. … Txawm li cas los xij, tempering ntawm cov hlau no feem ntau tsis tas yuav tsum tau vim yog qhov kub siab heev Ms (kwv yees li 400◦C) thiab Mf kub, uas tso cai rau cov hlau no ua rau nws tus kheej tempering thaum quenching [3].
Yuav ua li cas ua kom cov pa roj carbon tsawg?
Case-hardening koom nrog ntim cov hlau tsis muaj cov pa roj carbon tsawg hauv cov khoom muaj cov pa roj carbon ntau, tom qab ntawd ua kom sov lub pob no kom txhawb cov pa roj carbon monoxide mus rau hauv saum npoo ntawm cov hlau. Qhov no tsim ib txheej txheej nyias ntawm cov pa roj carbon ntau dua, nrog cov ntsiab lus carbon maj mam txo qis los ntawm qhov chaw.
Koj puas tuaj yeem ua cov hlau tsis tshua muaj hlau?
hom carbon steel feem ntau siv yog cov pa roj carbon tsawg. Cov hlau no feem ntau muaj tsawg dua 0.25 feem pua cov ntsiab lus carbon. Peb tsis tuaj yeem tawv los ntawm kev kho cua sov (los ua Martensitic) yog li kev xyaum txias feem ntau ua tiav qhov no.
Koj puas tuaj yeem ua kom cov pa roj carbon tsawg los ntawm cua sov thiab quenching?
Thaum nws muaj tseeb tias tsuas yog cua sov thiab quenching tsis yog ib qho kev xaiv zoo los ua kom cov pa roj carbon tsawgsteels, tib yam tsis tas yuav muaj tseeb rau lwm txoj hauv kev hardening - uas yog carburizing. Carburizing yog txheej txheem ntawm diffusing carbon rau saum npoo ntawm cov pa roj carbon tsawg kom nce hardness.
Yuav ua li cas quenching ua rau qis carbon steel?
Quenching txo qis qhov txo qis hauv cheeb tsam los ntawm35-40%hauv cov hlau uas muaj 0.03-0.12% C. Lub hardness ntawm cov hlau raws li xa tuaj nce me ntsis nrog cov concentration ntawm carbon (HB 50-150). quenching ua rau kom lub hardness (los ntawm HB 130 mus rau 190) nrog nce concentrations ntawm carbon.
Pom zoo:
Cov neeg ua tawv tawv tuaj yeem muag tawv?
Leather tam sim no muab muag rau cov neeg ua haujlwm tawv tawv, ntawm 9-12 tawv rau 1 emerald. Tawv tam sim no tuaj yeem ua khoom siv 4 luav zais. Tus neeg ua tawv muag yog dab tsi? Ib tug neeg ua haujlwm tawv tsim cov khoom siv xws li hnab, hnab, hnab, hnab, khau, siv tawv, thiab eeb.
Koj puas tuaj yeem siv cov roj pleev roj rau ntawm cov khoom siv yas?
Ntxhais tub, da dej, dab dej - fiberglass &pobzeb; qhov cub, qhov cub, grills, hoods, tub yees; pem teb - pobzeb, yas, pob zeb, ntaub pua plag, tsis muaj quav ciab, lev; aluminium & vinyl siding, fiberglass, canvas, chrome; RVs, nkoj; pas dej ua ke, patio rooj tog &
Los ntawm cov pa roj carbon monoxide ua rau muaj kuab paug?
Gases uas ua rau huab cua muaj kuab paug muaj xws li carbon, nitrogen thiab sulfur oxides. Txawm hais tias qee qhov ntawm cov pa roj no tshwm sim ib txwm muaj, zoo li carbon dioxide nyob rau hauv kev tshem tawm ntawm huab cua los ntawm lub ntsws, cov pa phem loj tuaj los ntawm kev hlawv cov fossil fuels:
Tsev tawv taub hau puas tuaj yeem ua rau tawv nqaij tawv?
Sunburned tawv taub hau plaub hau poob Ib lub tshav kub ntawm koj cov tawv nqaij feem ntau yuav tsis ua rau plaub hau poob. Tej zaum koj yuav poob qee cov plaub hau thaum daim tawv nqaij tev, tab sis lawv yuav tsum rov ua dua. Yog tias koj muaj cov plaub hau nyias, koj muaj kev tiv thaiv ntuj tsawg los ntawm lub hnub lub teeb UV.
Puas cov kab mob muaj txiaj ntsig loj hlob ntawm cov pa roj carbon?
Cov pa roj carbon ntau thim rov qab lub luag haujlwm ntawm tad, thiab tsis yog coj cov pa roj carbon monoxide mus rau cov kab mob (uas feem ntau nyob hauv pob zeb lossis substrate), txoj kev no ntxiaskab mob loj hlob ncaj qha rau ntawm cov pa roj carbon.
