S250GD Galvanized Steel Chev yog dab tsi?

 

S250GD galvanized steel kauj yog siab - cov ntaub ntawv muaj zog coated nrog zinc los tiv thaiv corrosion. Nws yog qhov xav tau ntau hauv kev tsim kho, tsheb, thiab kev lag luam vim nws ruaj khov, txhim khu kev qha, thiab tiv taus ntau yam ib puag ncig. Cov txheej zinc tseem txuas ntxiv lub neej ntawm cov khoom siv thiab ua raws li qhov chaw du rau kev siv xws li cov khoom siv hauv tsev, vov tsev, thiab cladding. Ua ke nrog lub zog thiab kev tiv thaiv corrosion, S250GD galvanized steel kauj yog ntau yam thiab nqi -txuag kev xaiv rau txhua tus kws tshaj lij.

 

 

Txuj	Qib sib npaug
BS	FeE250G
ASTM	Qib B (ASTM A 466 M)
GB	Q235
JIS	TIAB SA 340

 

 

Element	Cov ntsiab lus siab tshaj (%)
Cov pa roj carbon (C)	0.2
Manganese (Mn)	1.7
Silicon (Si)	0.5
Phosphorus (P)	0.1
Sulfur (S)	0.045
Nitrogen (N)	0.012
Aluminium (Al)	0.015

 

 

Galvanizing muaj cov hlau npog nrog zinc los tiv thaiv corrosion thiab xeb. Cov txheej txheem txhim kho cov hlau durability thiab lub neej ntev. Feem ntau hom galvanization tsuas yog kub -dip galvanization, qhov twg cov hlau yog dipped nyob rau hauv molten zinc khaws cia rau hauv lub cub tawg ntawm 450℃(842℃F). Tsis tas li ntawd, zinc reacts nrog steel nto los tsim ntau zinc - hlau alloy txheej thiab ib qho kev txiav txim siab ntshiab zinc txheej.

 

Ib qho txiaj ntsig tseem ceeb ntawm kub -dip galvanizing yog kev tiv thaiv zoo ib yam txawm tias nyob hauv ib puag ncig huab cua. Raws li cov ntaub ntawv tshiab tshaj plaws, galvanized steel tuaj yeem tiv thaiv corrosion rau ntau tshaj 50 xyoo hauv cov ntawv thov nyob deb nroog thiab txog li 20-25 xyoo hauv marine lossis ib qho chaw muaj kev lag luam. Lub thickness ntawm zinc txheej tseem ceeb ntawm no, tsuas yog hais txog 45-85 microns sawv cev rau cov tuab li niaj zaus.

 

Tsis zoo li kub-dip galvanization, electro- cov txheej txheem galvanization siv cov hluav taws xob tam sim no los siv cov zinc txheej nyias nyias. Cov txheej txheem no feem ntau lees paub tias muab qhov ua tiav zoo tab sis tsis muaj zog piv rau kub -dip galvanizing. Yog li, nws raug suav hais tias ntau dua rau kev siv sab hauv tsev lossis thaj chaw uas muaj kev pheej hmoo corrosion tsawg.

 

Cov kev txhim kho tsis ntev los no hauv cov txheej txheem galvanizing suav nrog dual-theem galvanizing thiab txhim kho zinc{1}} txhuas- magnesium coatings, uas muaj kev tiv thaiv corrosion zoo dua thiab kev ua haujlwm ib puag ncig. Cov kev tshawb fawb tau pom tias txawm tias me me ntawm magnesium hauv cov txheej txheem txheej tuaj yeem ua rau muaj kev tiv thaiv galvanic yuav luag peb zaug piv rau cov pa zinc txheej, yog li tsim kom muaj kev lag luam nyiam niaj hnub no.

 

Nyob ntawm daim ntawv thov thiab qhov yuav tsum tau ua, S250GD muaj plaub qib zoo:

• Qib FA:Yog tias koj daim ntawv thov tsis xav kom pom, xws li cov qauv sab hauv lossis qhov chaw zais, FA qib txaus kom tau raws li qhov xav tau.
• Qib FB:Rau lub sijhawm nrog qhov xav tau nruab nrab ntawm qhov chaw, xws li cov khoom siv sab hauv.
• FC qib:Yog tias cov hlau yuav raug tso tawm ncaj qha, xws li rau cov khoom sab nraud, FC raug pom zoo, nrog rau qhov chaw huv thiab smoother.
• FD qib:Qhov zoo tshaj plaws rau siab -zoo li qhov chaw, xws li tsheb vaj huam sib luag lossis cov chaw zoo nkauj, uas yuav luag tsis muaj qhov tsis xws luag thiab pom kev zoo heev.

 

Txheej Txheej Cov ntaub ntawv ntawm S250GD Steel

 

Txheej Txheej	Siv tau Deg Structure	Qhov hnyav ntawm txheej txheej g / m² (A / B)
Txheej Txheej Sib npaug (Zinc Txheej\\Zn-Fe Alloy Txheej)	Z, G, GX, N, R, S, O	40/40~225/225
Differential Txheej b	N, R, S, O	30 ~ 150 (txhua sab)

 

Lub galvanized txheej ntawm S250GD steel zoo heev txhim kho nws cov corrosion kuj los ntawm kev tsim cov ntaub thaiv npog tiv thaiv cov dej noo thiab ib puag ncig. Qhov no ua kom durability thiab kev ntseeg siab nyob rau hauv ntau yam kev siv. Peb txaus siab rau kev siv cov kev kho mob saum npoo av thiab txheej txheej uas ua kom zoo dua S250GD qhov kev ua tau zoo, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev xav tau ntawm ntau qhov kev lag luam.

 

Muaj Steel Qib

 

Txuj	Qib	C	Si	Mn	P	S	Ti
Kev Ua Txhaum Cai Suav Standard	DX51D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX52D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX53D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX54D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX56D+Z	0.12	0.50	0.60	0.100	0.045	0.30
	DX57D+Z	0.12	0.50	0.60	0.100	0.045	0.30
Kev Ua Txhaum Cai Japanese Standard	SGCC	0.15	0.50	0.80	0.050	0.030	0.025
	SGCD1 SGCD2	0.12 0.10	0.50 0.50	0.60 0.45	0.040 0.030	0.030 0.030	0.025 0.025
	SGCD3	0.08	0.50	0.45	0.030	0.030	0.025
	SGCD4	0.06	0.50	0.45	0.030	0.030	0.025
Rau Cov Qauv Japanese Standard	TIAB SA 340	0.25	0.50	1.70	0.200	0.035	0.025
	SIB 400 SIB 440	0.25 0.25	0.50 0.50	1.70 2.00	0.200 0.200	0.035 0.035	0.150 0.150
	SIB 490	0.30	0.50	2.00	0.200	0.035	0.025
	TIAB SA 510	0.30	0.50	2.50	0.200	0.035	0.025
Rau Cov Qauv AISI Standard	S220GD + Z	0.20	0.60	0.70	0.100	0.045	0.025
	S250GD + Z	0.20	0.60	0.70	0.100	0.045	0.025
	S280GD + Z	0.20	0.60	0.70	0.100	0.045	0.025
	S320GD + Z	0.20	0.60	0.70	0.100	0.045	0.025
	S350GD + Z	0.20	0.60	0.70	0.100	0.045	0.150
	S550GD + Z	0.20	0.60	0.70	0.100	0.045	0.150

 

Hu rau tam sim no