Gr12 Titanium Alloy Ntawv Nyiaj

Gr12 (Qib 12, UNS R53400) yog ze ntawm -alpha titanium alloy uas muaj me me ntxiv ntawm molybdenum (0.3%) thiab npib tsib xee (0.8%). Cov ntsiab lus alloying no muab kev txhim kho corrosion, tshwj xeeb tshaj yog nyob rau hauv kev txo cov acid ib puag ncig thiab cov tshuaj chloride kub, thaum tuav cov ntaub zoo. Hauv daim ntawv foil, Gr12 muab cov khoom tshwj xeeb no rau cov ntawv thov uas xav tau kev tiv thaiv corrosion hauv ultra-thin seem.

 

Txhim kho Corrosion Resistance:Superior rau CP qib hauv kev txo cov kua qaub (sulfuric, hydrochloric) thiab kub brine

Zoo heev Crevice Corrosion Resistance:Outperforms txheem titanium qib nyob rau hauv nruj crevice tej yam kev mob

Zoo Mechanical Strength:Lub zog siab dua Gr2 (483 MPa vs 345 MPa) - muaj txiaj ntsig zoo rau nyias - daim ntawv thov ntu

Formability zoo:Ntau formable dua siab -lub zog alloys zoo li Gr5

Weldability zoo heev:Yooj yim weldable siv tshwj xeeb micro- vuam txheej txheem

 

Kev lag luam	Daim ntawv thov
Kev ua tshuaj lom neeg	Gaskets, diaphragms, corrosion barriers, tank liners, expansion pob qij txha
Chlor-Alkali Production	Barrier foils, cell Cheebtsam, corrosion{0}}cov khaubncaws sab nraud povtseg
Desalination	Evaporator foil Cheebtsam, brine barrier txheej
Roj & Roj	Downhole cuab yeej Cheebtsam, corrosion barriers, ntsuas foils
Tubrog nkoj	Cov dej hiav txwv -cov ntaub ntawv pov thawj, cov khoom tiv thaiv cathodic

 

Element	Qhov yuav tsum tau muaj (%)	Tus nqi zoo (%)
Titanium (Ti)	Tshuav	Tshuav
Molybdenum (hli)	0.2 – 0.4	0.30
Nickel (Ni)	0.6 – 0.9	0.75
Hlau (Fe)	Tsawg dua los yog sib npaug li 0.30	0.12 – 0.20
Cov pa oxygen (O)	Tsawg dua lossis sib npaug li 0.25	0.15 – 0.20
Cov pa roj carbon (C)	Tsawg dua lossis sib npaug li 0.08	0.01 – 0.02
Nitrogen (N)	Tsawg dua lossis sib npaug li 0.03	0.01 – 0.02
Hydrogen (H)	Tsawg dua lossis sib npaug li 0.015	0.001 – 0.003
Residuals (txhua)	Tsawg dua lossis sib npaug li 0.10	< 0.05
Residuals (tag nrho)	Tsawg dua los yog sib npaug li 0.40	< 0.20

 

Khoom	ASTM B265 Cov Lus Qhia	Hom Tus Nqi ntawm Foil Gauges
Tensile Strength (Qhov kawg)	Ntau dua lossis sib npaug rau 483 MPa (Ntau dua lossis sib npaug rau 70 ksi)	500-600 MPa
Yield zog (0.2% Offset)	Ntau dua lossis sib npaug rau 345 MPa (Ntau dua lossis sib npaug rau 50 ksi)	380-480 MPa
Elongation	Ntau dua lossis sib npaug li 18%	15 – 22%*
Hardness (Rockwell B)	–	85–95 IB
Modulus ntawm Elasticity	–	103-107 GPa

 

Khoom	Tus nqi	Chav tsev
Qhov ntom	4.51	g/cm³
Melting Point	1660 – 1700	degree
Thermal conductivity	19 – 22	W/m·K (ntawm 20 degree)
Hluav taws xob Resistivity	0.52 – 0.55	µΩ·m (ntawm 20 degree)
Tshwj xeeb kub muaj peev xwm	540	J/kg · K
Coefficient ntawm Thermal Expansion	8.9 – 9.3	µm / m·℃(20 ~ 200 degree)
Magnetic Properties	Tsis yog-magnetic	–
Beta Transus Kub	880 – 900	degree

 

Khoom	Gr1	Gr 2	Gr 5	gr 7	Gr 12
Tensile zog	240 MPa	345 MPa rau	895mpa ua	345 MPa rau	483 MPa ua
Yield zog	170 MPa	275 MPa rau	828MPa ua	275 MPa rau	345 MPa rau
Elongation	24%	20%	10%	20%	18%
Formability	Zoo heev	Zoo heev	Nruab nrab	Zoo heev	Zoo
Corrosion (txo cov kua qaub)	Zoo	Zoo	Nruab nrab	Superior	Zoo heev
Crevice Corrosion	Nruab nrab	Nruab nrab	Nruab nrab	Zoo heev	Zoo heev
Tus nqi txheeb ze	Tsawg	Tsawg	Nruab nrab	Siab	Nruab nrab
Zoo tshaj rau	Max formability	Lub hom phiaj dav dav	Siab zog	Aggressive acids	Kub brine + acids

 

Q1: Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm Gr12 dhau Gr2 ntawv ci?

Gr12 muab:

Txhim kho corrosion kuj hauv kev txo cov kua qaub (sulfuric, hydrochloric)

Superior crevice corrosion kuj nyob rau hauv nruj qhov chaw

Lub zog siab dua (483 MPa vs 345 MPa) - tso cai rau cov ntu nyias

Kev ua tau zoo dua qhov ntsuas kub txog li 350 degree

 

Q2: Thaum twg kuv yuav tsum xaiv Gr12 tsis yog Gr7?

Kev txiav txim siab	gr 7	Gr 12
Corrosion Resistance	Superior hauv kev txo cov acids	Zoo heev
Lub zog	345 MPa rau	483 MPa ua
Formability	Zoo heev	Zoo
Nqi	Siab (palladium)	Kev lag luam ntau dua
Zoo tshaj rau	Feem ntau nruj acids	Kub brine + lub zog

Xaiv Gr12 thaum koj xav tau kev txhim kho corrosion kuj nrog lub zog zoo ntawm tus nqi pheej yig dua.

 

Q3: Dab tsi yog qhov thinnest Gr12 foil muaj?

Gr12 ntawv muaj nyob rau hauv 0.012 hli (12 microns, 0.0005 nti).

 

Q4: Qhov dav twg muaj?

Txiav - mus rau -Length: 10 - 600 mm

Loj: 10-400mm

Sawb: 2 - 200 mm (traverse- qhov txhab)

 

Melting & Primary Processing:

VAR (Nqus Arc Remelting) Rauv - Rau qhov zoo tshaj plaws Gr12 ingots nrog meej Mo thiab Ni tswj

Plasma Arc Melting (PAM) - Rau cov ntawv thov tshwj xeeb uas xav tau kev kho kom zoo ntxiv

 

Cov Khoom Siv Rolling Tshwj Xeeb:

20-High Sendzimir Rolling Mills - Rau ultra-precise thickness tswj mus rau 0.012 hli

4-High Reversing Cold Mills - Rau cov ntsuas nruab nrab

Nruam Annealing Kab - Nrog inert cua tiv thaiv

Nqus Annealing Furnaces - Rau cov ntawv thov tseem ceeb uas yuav tsum muaj kev sib kis - ua haujlwm dawb

 

Kev kho deg:

Pickling Lines - Rau cov chaw huv si (tseem ceeb rau kev ua haujlwm corrosion)

Kev ntxuav cov kab - Ntau -theem aqueous tu

Electropolishing Kab - Rau kev ua tiav tshwj xeeb

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