Phau Ntawv Qhia Tag Nrho Ntawm Cov Phiaj Hlau: Hom, Qib, Qauv & Kev Xaiv Rau Cov Kws Tsim Qauv

Phiaj hlau yog ib yam khoom hlau uas yog dov tiaj, tau txhais los ntawm qhov tuab ntau dua 3 mm. Nws yog ib qho ntawm cov khoom siv tseem ceeb tshaj plaws uas siv rau hauv kev lag luam hnyav, kev tsim kho, kev siv hluav taws xob, thiab kev thauj mus los. Cov phiaj hlau yog tsim los ntawm kev dov kub cov slabs los ntawm lub tshuab casting txuas ntxiv lossis cov ingots los ntawm lub tshuab plate mill, ces txiav mus rau qhov ntev tshwm sim. Qhov kev faib tawm yog raws li qhov tuab: phiaj nruab nrab yog 3–20 mm, phiaj tuab yog 20–60 mm, thiab phiaj tuab heev tshaj 60 mm, nce txog 300 mm hauv cov tshuab tshwj xeeb.

Tsis tsuas yog qhov tuab, cov phiaj hlau kuj tau faib los ntawm cov khoom siv hauv nws mus rau ntau pawg loj. Carbon steel plate (ASTM A36, A516, A572) yog qhov loj tshaj plaws thiab siv rau kev tsim qauv dav dav, thawv rau roj, thiab kev siv uas xav tau lub zog siab. Stainless steel plate (304, 316, 310S, 2205 duplex) muaj kev tiv thaiv corrosion rau kev siv tshuaj, khoom noj, thiab hiav txwv. Alloy steel plate (ASTM A387 Cr-Mo, A514 quenched-and-tempered) raug siv rau qhov kub thiab txias siab. Wear-resistant plate (NM400/NM500, Hardox) yog tsim los tiv thaiv kev rub hma rau hauv mining thiab earthmoving. Shipbuilding plate (AH36/DH36/EH36) thiab boiler plate (A516 Gr.70) yog cov khoom tshwj xeeb uas yuav tsum tau txais kev pov thawj nruj.

Cov txheej txheem tsim khoom txawv ntxiv faib cov phiaj hlau. Hot rolled (HR) phiaj yog tsim hauv qhov kub siab tshaj qhov recrystallization kub, ua rau pom cov nplaim tawv thiab qhov tolerance dav, tsim nyog rau kev siv qauv. Cold rolled (CR) phiaj yog ua tiav ntawm qhov chav kub los ntawm hot-rolled coil, muab qhov chaw du thiab qhov ntsuas nruj dua rau kev siv uas xav tau kev pom lossis kev tseeb. Heat-treated phiaj yog ua los ntawm normalizing, quenching, lossis tempering los txhim kho cov khoom siv mechanical rau qhov xav tau siab.

Qhov Kev Faib Tawm	Pawg	Qhov Tuab	Cov Kev Siv Feem Ntau
Qhov tuab	Phiaj Nruab Nrab	3–20 mm	Kev tsim kho dav dav, tsheb, cov qauv sib txawv
Qhov tuab	Phiaj Tuab	20–60 mm	Bridge girders, thawv rau roj, ship hulls
Qhov tuab	Phiaj Tuab Heev	60–300 mm	Cov tshuab hnyav, offshore platforms, dies
Khoom Siv	Carbon Steel Plate	3–300 mm	Cov qauv, thawv, kev siv dav dav
Khoom Siv	Stainless Steel Plate	3–150 mm	Kev siv tshuaj, khoom noj, tshuaj, hiav txwv
Khoom Siv	Alloy Steel Plate	6–200 mm	Boilers, heat exchangers, kev siv kub siab

Kev xaiv cov qib phiaj hlau raug yog qhov txiav txim siab tseem ceeb tshaj plaws hauv kev yuav khoom. Qhov kev xaiv no cuam tshuam ncaj qha rau kev ruaj ntseg ntawm cov qauv, kev siv nyiaj tsim, kev ua neej ntev ntawm corrosion, thiab kev ua raws li kev cai. Cov kws tsim qauv yuav tsum ntsuas cov kev xav tau mechanical rov qab rau cov nqi khoom thiab kev muaj. Peb lub tshuab standards loj yog ASTM (American), EN (European), thiab JIS (Japanese), nrog GB (Chinese) standards kuj siv dav hauv Asian lag luam.

Carbon steel plate yog lub hauv paus ntawm kev tsim kho industry. ASTM A36 yog qib dav tshaj plaws thoob ntiaj teb, muab 250 MPa yam tsawg yield nrog kev weldability zoo. A516 Gr.70 yog qib tseem ceeb rau pressure vessel, muab 260 MPa yield thiab zoo tshaj rau qhov kub thiab txias qis txog −30 °C. A572 Gr.50 muab 345 MPa yield - siab tshaj A36 li 38% - ua rau cov seem yuag thiab txo kev welding. EN equivalents suav nrog S235JR (general structural) thiab S355J2 (high-strength nrog −20 °C impact).

Stainless steel plate grades muaj ntau qhov performance. Type 304 (18% Cr, 8% Ni) yog qib loj siv rau kev tiv thaiv corrosion dav dav hauv khoom noj, dairy, thiab architectural. Type 316 ntxiv 2–3% molybdenum rau kev tiv thaiv chloride zoo dua, ua rau nws yog tus qauv rau hiav txwv thiab tshuaj. Type 310S (25% Cr, 20% Ni) withstands kev siv tsis tu ncua txog 1100 °C rau furnaces thiab boilers. Type 321 yog titanium-stabilized los tiv thaiv intergranular corrosion tom qab welding. Rau kev ua kom muaj zog thiab tiv thaiv corrosion zoo, 2205 duplex stainless steel (22% Cr, 5% Ni, 3% Mo) muab ob npaug yield strength ntawm 316L nrog kev tiv thaiv stress corrosion cracking zoo heev.

Qib	Yield (MPa)	Tensile (MPa)	Cov Khoom Siv Tseem Ceeb	Kev Siv Tseem Ceeb
ASTM A36	≥250	400–550	0.26% C max	Cov qauv dav dav, tsev
ASTM A516 Gr.70	≥260	485–620	0.28% C, 0.85–1.2% Mn	Pressure vessels, boilers
ASTM A572 Gr.50	≥345	450–600	0.23% C, Nb/V microalloy	High-strength structures
304 Stainless	≥205	≥515	18% Cr, 8% Ni	Khoom noj, tshuaj, architectural
316 Stainless	≥205	≥515	16% Cr, 10% Ni, 2% Mo	Hiav txwv, tshuaj
2205 Duplex	≥450	≥655	22% Cr, 5% Ni, 3% Mo	Tshuaj, offshore, high-strength

Txhua qhov kev yuav phiaj hlau pib nrog peb qhov ntsuas: tuab × dav × ntev. Cov ntsuas no yuav tsum tau qhia meej hauv millimeters rau metric lossis inches rau imperial. Cov loj loj xws li 1500 × 6000 mm lossis 4′ × 8′ muaj kev muaj thiab nqi zoo tshaj plaws, thaum cov ntsuas tshwj xeeb kuj tau, tab sis xav tau qhov tsawg kawg thiab lub sijhawm ntev. Nco ntsoov qhia seb cov ntsuas yog nominal lossis tsawg kawg, vim qhov tolerance ntawm qhov tuab txawv los ntawm tus qauv.

Cov khoom mechanical txhais tau lub peev xwm ntawm phiaj. Yield strength (MPa) qhia txog qhov stress uas kev hloov mus tas li pib. Tensile strength (MPa) sawv cev rau qhov stress siab tshaj ua ntej tawg. Elongation (%) ntsuas ductility - tseem ceeb rau kev forming thiab bending. Impact energy (J) ntsuas ntawm qhov kub tshwj xeeb (feem ntau −20 °C lossis −40 °C) qhia txog kev tiv thaiv brittle fracture, tseem ceeb rau kev siv qhov kub thiab txias qis.

Kev tswj cov chemical composition yog ib qho tseem ceeb. Carbon content cuam tshuam ncaj qha rau weldability: carbon tsawg (≤0.25%) ua rau welding yam tsis preheat rau feem ntau qhov tuab. Manganese (Mn) pab rau lub zog thiab deoxidation. Silicon (Si) yog deoxidizer. Phosphorus (P) thiab sulfur (S) yog impurities uas khaws cia kom tsawg (feem ntau ≤0.035% txhua qhov) kom tsis txhob muaj hot shortness thiab txo toughness. Rau pressure vessel thiab qhov kub thiab txias qis, cov kev txwv nruj dua yuav siv.

Cov phiaj hlau tsis tshua siv ncaj qha li qhov dov. Kev kho saum npoo txhim kho kev tiv thaiv corrosion, qhov zoo saib, lossis kev lo rau coating. Rau stainless steel, 2B finish (cold-rolled, annealed, pickled, lightly rolled) yog tus qauv thoob ntiaj teb rau cov cuab yeej tshuaj thiab khoom noj. BA (bright annealed) tsim qhov zoo li iav rau architectural thiab appliances. No.4 finish (150-grit polished) muab qhov du brushed satin rau chav ua noj thiab elevator panels. Carbon steel plates feem ntau tau sandblasting rau Sa2.5 grade kom tshem scale, pickling rau qhov nplaum nyiaj, lossis hot-dip galvanizing raws li ASTM A123 rau kev tiv thaiv corrosion sab nraum zoov.

Cov kev pab cuam ua tiav hloov cov phiaj hlau los ua cov khoom npaj txhaj. Kev txiav yog thawj haujlwm: flame cutting txiav tau phiaj tuab 6–300 mm yam tsis zoo, plasma cutting zoo tshaj rau 6–50 mm nruab nrab nrog ceev, thiab laser cutting tiav qhov tseeb ±0.1 mm rau cov phiaj nyias txog nruab nrab. Cov kev pab ntxiv muaj xws li beveling rau weld preparation, bending thiab rolling rau cov seem nkhaus, drilling rau bolted connections, thiab heat treatment los txo stress lossis txhim kho properties. ManufacturerPipe muab kev pab ua tiav hauv ib lub tsev, tshem tawm cov nqi thiab sijhawm ncua ntawm ntau tus neeg ua haujlwm.

Phiaj hlau siv rau txhua qhov loj industry. Hauv kev tsim tsev thiab infrastructure, high-rise tsev nruab nrab, long-span stadium roofs, thiab bridge girders vam khom carbon steel plates hauv qib A36, A572 Gr.50, thiab S355J2. Qhov tuab xws li 8 mm rau cov seem theem nrab mus txog 100 mm rau column base plates thiab cov connections hnyav.

Lub pressure vessel thiab boiler industry yog raws li ASME Boiler thiab Pressure Vessel Code. A516 Gr.70 yog siv loj rau qhov kub thiab txias nruab nrab, thaum A387 Cr-Mo qib siv rau qhov kub siab (400–550 °C) hydrogen service. Qhov tuab ntawm phiaj yog txiav txim los ntawm design pressure raws li ASME VIII Division 1 lossis 2, feem ntau yuav tsum tau ultrasonic inspection tag nrho.

Kev tsim nkoj thiab marine engineering yuav tsum tau classification society certified plates. ASTM A131 qib AH36, DH36, thiab EH36 muab kev tiv thaiv qhov kub thiab txias qis rau hull structures. Cov phiaj yuav tsum tau classification society stamps (DNV, ABS, Lloyd's, CCS, BV) thiab tau raws li NDT nruj, tshwj xeeb rau qhov tuab tshaj 20 mm thiab cov chaw nyuaj stress.

Engineering machinery xav tau wear-resistant plates xws li NM400/NM500 lossis Hardox 400/500 rau excavator buckets, dump truck bodies, crushers, thiab chutes. Cov phiaj no muab hardness siab (360–500 HB) nrog impact resistance zoo thiab feem ntau yog quenched-and-tempered condition.

ManufacturerPipe muab ntau xyoo kev paub hauv steel industry rau txhua qhov kev txiav txim. Peb tuav kev sib raug zoo ncaj qha nrog cov tuam txhab hlau loj hauv tebchaws, ua kom cov nqi sib tw thiab tau txais qhov tseem ceeb thaum lub sijhawm nruj. Peb cov khoom muaj xws li tag nrho cov carbon steel thiab stainless steel txog alloy, wear-resistant, thiab ship plate hauv qhov tuab ntawm 3 mm mus rau 300 mm.

Peb cov kev ua tiav muab peb txawv ntawm cov traders ib txwm. Peb ua flame cutting, plasma cutting, laser cutting, bending, rolling, thiab beveling hauv tsev - txhais tau tias ib qho purchase order, ib lub luag haujlwm zoo, thiab xa khoom nrawm. Txhua phiaj tau txais cov ntaub ntawv tag nrho: ISO 9001, CE, PED, thiab cov classification society certification. Txawm koj xav tau 10 phiaj rau pressure vessel lossis 500 tons rau bridge girder, peb pawg muag khoom tseeb yuav xyuas kom koj tau txais qib, specification, thiab kev ua raug rau koj daim ntawv thov.

Tiv tauj peb pawg muag khoom rau cov nqi sib tw ntawm ASTM, EN, thiab JIS standard steel plates. Mill certificates nrog rau txhua qhov kev txiav txim.

Thov Qhia Tus Nqi