Kev taw qhia txog cov khoom siv raw tseem ceeb

1. Cov yam ntxwv tseem ceeb ntawm cov hlau thiab cov hlau thiab cov teb thov

①Cov Hlau Carbon

Cov hlau carbon yog cov hlau thiab cov hlau ferric carbon alloy uas muaj cov ntsiab lus carbon, feem ntau muaj ntawm 0.12% thiab 2.0%. Raws li cov ntsiab lus carbon sib txawv, cov hlau carbon tau muab faib ua cov hlau carbon qis (cov ntsiab lus carbon tsawg dua 0.3%), cov hlau carbon nruab nrab (cov ntsiab lus carbon yog 0.3% -0.6%) thiab cov hlau carbon siab (cov ntsiab lus carbon ntau dua 0.6%). Cov hlau carbon muaj cov yas zoo, weldability thiab machiningability, yog siv dav hauv cov khoom siv, cov khoom siv kho tshuab, kev tsim tsheb thiab lwm yam teb.

②Cov Hlau Sib Xyaws

Cov hlau sib xyaw yog cov khoom hlau uas muaj lwm cov ntsiab lus sib xyaw (xws li chromium, nickel, molybdenum, thiab lwm yam) ntxiv rau ntawm cov hlau carbon los txhim kho nws cov khoom siv kho tshuab, tiv taus cua sov thiab tiv taus corrosion. Cov hlau sib xyaw tuaj yeem muab faib ua ntau hom raws li qhov sib piv ntxiv thiab kev ua tau zoo ntawm cov ntsiab lus sib xyaw sib txawv. Piv txwv li, cov hlau chromium-molybdenum feem ntau siv rau hauv kev tsim tsheb thiab kev lag luam aviation, thiab cov hlau manganese siv rau hauv kev tsim cov khoom siv tiv taus hnav.

③Cov hlau tsis xeb

Cov hlau tsis xeb yog cov hlau uas tiv taus xeb, cov khoom tseem ceeb yog chromium (feem ntau ntawm 10% thiab 30%) thiab nickel. Cov hlau tsis xeb muab faib ua austenite stainless hlau, ferrite stainless hlau thiab martensite stainless hlau. Austenitic stainless hlau muaj kev tiv taus xeb zoo thiab ua tiav, siv dav hauv chav ua noj, kho kom zoo nkauj, khoom siv tshuaj lom neeg thiab lwm yam teb.

④Cov hlau pwm

Cov hlau pwm yog cov hlau tshwj xeeb siv rau hauv kev tsim cov pwm, nrog rau qhov nyuaj siab, lub zog siab, tiv taus kev hnav thiab kev cuam tshuam. Raws li qhov yuav tsum tau siv thiab cov yam ntxwv ntawm cov txheej txheem, cov hlau pwm kev lag luam tuaj yeem muab faib ua cov hlau pwm txias, hlau pwm kub, hlau pwm yas thiab lwm yam. Lawv siv dav hauv cov pwm yas, cov pwm tuag-casting thiab lwm yam teb.

⑤Cov yeeb nkab hlau

Cov yeeb nkab hlau yog ib hom yeeb nkab hlau hollow, uas tuaj yeem muab faib ua cov yeeb nkab hlau seamless thiab cov yeeb nkab hlau welded raws li cov txheej txheem tsim khoom. Cov yeeb nkab hlau siv dav hauv roj av, kev lag luam tshuaj lom neeg, kev tsim khoom siv tshuab, kev tsim kho thiab lwm yam teb, nrog cov yam ntxwv ntawm lub peev xwm dais tau zoo, tiv taus siab zoo thiab tiv taus xeb. Cov yeeb nkab hlau seamless yog tsim rau qhov chaw siab thiab kub siab, thaum cov yeeb nkab hlau welded yog tsim rau kev tsim kho dav dav thiab kev tsim kho.

2. Kev kho cua sov thiab kev kho qhov chaw

Cov khoom ntawm cov khoom siv hlau tuaj yeem txhim kho los ntawm kev kho cua sov thiab kev kho saum npoo. Kev kho cua sov suav nrog kev annealing, kev kub hnyiab ib txwm muaj, kev quenching thiab lwm yam txheej txheem, uas tuaj yeem kho cov qauv ntawm cov hlau thiab txhim kho nws qhov nyuaj thiab lub zog. Kev kho saum npoo suav nrog galvanizing, txau, txheej thiab lwm txoj hauv kev, uas tuaj yeem txhim kho qhov kev tiv thaiv corrosion thiab kev zoo nkauj ntawm cov hlau.

3. tus qauv zoo

Cov qauv zoo ntawm cov khoom siv hlau yog qhov tseem ceeb kom ntseeg tau tias cov khoom zoo. Cov lus qhia dav dav ntawm cov khoom siv hlau suav nrog cov qauv thoob ntiaj teb (piv txwv li ASTM, ISO), cov qauv European (piv txwv li EN), thiab cov qauv hauv tebchaws (piv txwv li GB, JIS). Kev xaiv cov hlau tsim nyog tuaj yeem lav nws qhov kev ua tau zoo thiab kev ntseeg siab.