ASTM A519 SMLS Yeeb Nkab

Tianjin Lefin Industrial Co., Ltd yog ib qho ntawm cov tuam ntxhab thiab cov muag khoom ntawm astm a519 smls yeeb nkab hauv Suav teb. Thov koj xav tias dawb mus yuav zoo astm a519 smls yeeb nkab los ntawm peb lub hoobkas. Kev pabcuam zoo thiab tus nqi tsim nyog muaj.

ASTM A519 tus qauv npog cov kev cai tshwj xeeb rau carbon steel thiab alloy steel seamless raj rau tshuab.

ASTM A519 tus qauv muaj qhov xav tau meej meej rau cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv sib txawv ntawm cov qib steel sib txawv, uas yog lub hauv paus rau kev ua haujlwm ntawm cov khoom siv.

• Tshuaj muaj pes tsawg leeg:

Tus qauv qhia qhov tshwj xeeb ntawm cov tshuaj muaj pes tsawg leeg rau txhua qib steel. Piv txwv li, qhov sib piv ntawm cov 1020 carbon steel thiab 4130 chromium-molybdenum alloy steel yog raws li hauv qab no (thov xa mus rau tus qauv qub rau cov nqi tshwj xeeb):

Cov pa roj carbon steel 1020: Carbon (C), manganese (Mn), phosphorus (P), thiab sulfur (S) yog cov tseem ceeb tswj cov ntsiab lus, thiab cov ntsiab lus ntawm alloying ntsiab yog tsawg.

Hlau alloy 4130:Ntxiv nrog rau cov ntsiab lus tseem ceeb, nws kuj muaj chromium (Cr) thiab molybdenum (Mo), yog li ua tiav lub zog siab dua, hardness thiab hardenability.

• Mechanical zog:

Cov khoom siv ntawm cov khoom siv (xws li lub zog tensile, yield zog, thiab elongation) yog ze ze rau lawv cov kev kho cua sov. Tus qauv txhais cov ntsuas kev ua tau zoo nyob rau hauv ntau lub xeev, xws li:

1. Kev txiav txim siab (A):Softens cov khoom, ua kom yooj yim ua, muaj zog tsawg, thiab zoo plasticity.
2. Normalizing (N):Homogenizes tus qauv, muab nws balanced lub zog thiab toughness.
3. Kev ntxhov siab (SR):Tshem tawm kev ntxhov siab ua haujlwm txias, nrog lub zog ntawm annealing thiab normalizing.
4. Ua haujlwm txias (CW):Lub zog yog txhim kho los ntawm txias deformation, tab sis plasticity txo.

Txhawm rau kom ntseeg tau qhov zoo ntawm cov kav hlau, ASTM A519 tus qauv muaj ntau txoj cai hauv kev tsim khoom thiab kev soj ntsuam txuas.

• Cov txheej txheem tsim khoom:

Cov kav hlau yog tsim los ntawm kev ua haujlwm kub (xws li kub dov thiab kub nthuav dav) lossis ua haujlwm txias (xws li kos duab txias). Txias- cov kav hlau ua haujlwm feem ntau yuav tsum tau kho cua sov ntawm 1200℃F (kwv yees 650 degree) lossis siab dua.

• Qhov ntev thiab cov duab:

Cov txheej txheem npog ntau qhov ntev, piv txwv li, sab nraud txoj kab uas hla tuaj yeem nyob ntawm kwv yees li 10mm mus rau ntau dua 350mm, thiab phab ntsa tuab tuaj yeem sib txawv ntawm tsawg dua 1mm txog 50mm. Kuj tseem muaj cov kev cai sib xws rau qhov ncaj thiab qhov zoo ntawm cov kav dej steel.

• Kev soj ntsuam zoo:

Ua ntej tawm hauv lub Hoobkas, cov kav hlau yuav tsum tau ua ntau yam kev soj ntsuam nruj, feem ntau suav nrog:

1. Tshuaj ntsuam xyuas muaj pes tsawg leeg
2. Mechanical Property Tests (Tensile Test, Hardness Test, thiab lwm yam)
3. Kev ntsuas kev ua tau zoo ntawm cov txheej txheem (flattening test, flaring test, bending test)
4. Tsis yog -kev kuaj kev puas tsuaj (xws li kev ntsuas tam sim no
5. Hydrostatic xeem

Tag nrho rau hauv tag nrho, ASTM A519 tus qauv muab cov ntaub ntawv pov thawj kev ua haujlwm rau cov raj seamless siv hauv cov khoom siv tshuab uas xav tau lub zog siab, siab precision thiab kev ua haujlwm zoo. Nws tus nqi yog nyob rau hauv kev ua kom ntseeg tau ntawm cov khoom nyob rau hauv ntau yam hnyav ua hauj lwm tej yam kev mob los ntawm standardized cov ntaub ntawv thiab cov txheej txheem yuav tsum tau.

Thaum xaiv qhov tseeb, koj tuaj yeem xa mus rau cov tswv yim hauv qab no:
• Qhia meej txog cov kev pab cuam:

Ua ntej, xav txog hom kev ntxhov siab (zoo li qub, dynamic, cuam tshuam) uas cov tivthaiv yuav tsum tau tiv taus, qib siab, ua haujlwm kub thiab corrosive ib puag ncig, thiab lwm yam.

• Ua raws cov qib steel thiab cov xwm txheej:

Raws li cov xwm txheej saum toj no, xaiv cov qib steel thiab nws cov kev kho cua sov uas tuaj yeem ua tau raws li qhov yuav tsum tau ua (xws li lub zog thiab tawv). Piv txwv li, 4130 thiab 4140 alloy steels feem ntau yog siv rau hauv cov ntawv thov kom muaj zog thiab hnav tsis kam.

• Ua tib zoo saib xyuas qhov raug:

Yog tias muaj kev xav tau siab rau kev sib dhos qhov tseeb, kev saib xyuas tshwj xeeb yuav tsum tau them rau qhov ntsuas qhov ntev ntawm cov khoom.