Gr2 Vs. Gr7: Dab tsi Titanium Qib Reigns Supreme Rau Cov Khoom Siv Tseem Ceeb?

Hauv cov khoom siv titanium alloy,Gr2 (kev lag luam ntshiab titanium qib qib)thiabGr7 (Ti{2}}0.15Pd corrosion-resistant alloy)yog ob qib siv dav nrog cov yam ntxwv sib txawv. Cov yav dhau los dominates dav dav - lub hom phiaj teb raws li "kev lag luam tag nrho-rounder", thaum yav tas los nthuav tawm tus nqi hloov tsis tau nyob rau hauv huab cua corrosive vim qhov tseeb ntxiv ntawm kab palladium.

 

I. Kev sib txawv ntawm cov khoom sib txawv: Kev ua tau zoo ntawm kev hloov pauv tau tshwm sim los ntawm Kev Sib Txuas Ntxiv

Gr2 Core Composition

Kev lag luam ntshiab titanium nrog cov ntsiab lus titanium ntau dua lossis sib npaug li 99.2% thiab tsis muaj cov ntsiab lus alloying ntxiv. Cov qauv kev tswj hwm impurity: O Tsawg dua lossis sib npaug 0.25%, Fe Tsawg dua lossis sib npaug rau 0.30%, N Tsawg dua lossis sib npaug rau 0.03%, C Tsawg dua lossis sib npaug rau 0.08%, H Tsawg dua lossis sib npaug 0.015%.

 

Gr7 Core Composition

Raws li Gr2 raws li matrix, nrog rau qhov ntxiv 0.12-0.25% palladium (Pd) ntxiv. Cov ntsuas impurity tswj tau zoo ib yam rau Gr2, tsuas yog cov ntsiab lus tshwj xeeb rau palladium.

 

 

II. Kev sib piv

 

 

Performance Dimension	Gr 2	gr 7
Mechanical Properties (Annealed State)	Tensile zog: 345-550MPa, yield zog: Ntau tshaj los yog sib npaug rau 275MPa, elongation: Ntau tshaj los yog sib npaug rau 20%, hardness: HV 120-200, zoo plasticity thiab formability	Yuav luag zoo ib yam rau Gr2. Qhov tsawg kawg nkaus qhov tseem ceeb ntawm cov tub ntxhais mechanical tsis xws li tensile lub zog thiab lub zog tawm los yog tib yam. Kev ua haujlwm txias thiab kev ua haujlwm vuam kuj tseem khaws tau Gr2 qhov zoo, thiab cov txheej txheem ua haujlwm Gr2 uas twb muaj lawm tuaj yeem hloov kho yam tsis tau kho cov txheej txheem.
Corrosion Resistance	Kev tiv thaiv corrosion zoo heev, muaj peev xwm tiv taus me me corrosive media xws li dilute hydrochloric acid (tsawg dua lossis sib npaug li 10%), dej hiav txwv, thiab cov kua qaub tsis muaj zog. Zoo pitting corrosion kuj nyob rau hauv chloride ib puag ncig, tab sis corrosion tus nqi nce ho nyob rau hauv muaj zog txo cov xov xwm xws li concentrated hydrochloric acid thiab hydrogen sulfide.	Qhov tseem ceeb upgraded corrosion kuj. Qhov sib ntxiv ntawm palladium ua rau nws tuaj yeem tiv taus cov xov xwm corrosive xws li concentrated hydrochloric acid (37%), H₂S, thiab sodium hypochlorite. Piv txwv li, hauv 90℃sodium hypochlorite tov, Gr7 tus nqi corrosion yog 70% qis dua li ntawm Gr2, tshwj xeeb tshaj yog qhia cov txiaj ntsig zoo hauv kev txo cov kua qaub thiab cov tshuaj chlorine - muaj cov corrosive ib puag ncig.
Cov yam ntxwv ua	Ua haujlwm txias txias, kub sib sau, thiab vuam kev ua haujlwm. Qhov kub thiab txias: 650-750 degree. Pickling kev kho mob tom qab vuam tuaj yeem ua tau raws li qhov yuav tsum tau ua, nrog cov nqi ua haujlwm tsawg.	Cov yam ntxwv ua haujlwm yog qhov zoo ib yam li Gr2, tshwj tsis yog tias qhov kub thiab txias yog me ntsis siab dua (ib puag ncig 800 degree). Txawm li cas los xij, tsis muaj qhov sib txawv tseem ceeb hauv kev ua haujlwm nyuaj thiab cov txheej txheem, thiab tsis xav tau cov cuab yeej ua haujlwm tshwj xeeb.
Nqi	Tus nqi qis. Cov khoom siv raw yog cov ntshiab titanium, cov txheej txheem smelting yog yooj yim, thiab kev lag luam tus nqi yog nyob rau theem ntawm kev lag luam ntshiab titanium.	Tus nqi siab dua Gr2. Vim tias qhov sib ntxiv ntawm cov hlau zoo nkauj palladium thiab qhov xav tau rau kev tswj xyuas meej ntawm palladium qhov kev faib tawm thaum lub sij hawm smelting, ob qho tib si raw khoom thiab cov nqi txheej txheem tau nce ntau.

 

III. Application Scenarios: Precise Diversion between General-Lub Hom Phiaj thiab Tshwj Xeeb-Lub Hom Phiaj

Gr 2

Tsim nyog rau cov xwm txheej uas muaj qhov sib txawv me me thiab tus nqi rhiab heev, xws li cov evaporators hauv seawater desalination nroj tsuag, nkoj pipelines, zoo tib yam kub exchanger sealing rings nyob rau hauv cov tshuaj kev lag luam, tshuaj tsuag cov kav dej hauv flue gas desulfurization systems, thiab kev kho mob scenarios yuav tsum tau biocompatibility xws li kev kho hniav.

 

gr 7

Tsom ntsoov rau qhov chaw hnyav uas muaj zog corrosion, xws li electrolytic hlwb hauv chlor-alkali kev lag luam, reactor agitator bushings, valve seals resistant rau ntub chlorine, thiab cov khoom siv tshuaj lom neeg yuav tsum tau tiv thaiv H₂S corrosion. Hauv cov xwm txheej no, Gr7 lub neej kev pabcuam tuaj yeem ua tau ntau dua li ob npaug ntawm cov khoom siv zoo tib yam, thiab nws tuaj yeem hloov qee qhov siab - nqi Hastelloy Cheebtsam.

 

 

IV. Kev xaiv khoom

1.Ua ib puag ncig corrosiveness ua lub hauv paus tseem ceeb

• Gr2: Nruab nrab / tsis muaj zog oxidizing media (dej hiav txwv, dej tshiab, huab cua ntub, thiab lwm yam)
• Gr7: Txo cov kua qaub (Ntau dua lossis sib npaug rau 5% hydrochloric acid / sulfuric acid), siab -kub tshuaj chlorine- muaj cov tshuaj, thiab alternating oxidation -txo ib puag ncig

 

2.Kev ntsuam xyuas ua ke nrog cov neeg kho tshuab thiab kev ua haujlwm

Ob qho khoom siv yog siv tau thaum lub zog tensile yog 345-550MPa thiab txoj kev sib sau / vuam yuav tsum tau ua.

• Gr2: Xaiv Gr2 rau huab hwm coj- tsim cov qauv (tus nqi qis)
• Gr7: Rau me me -batch tshwj xeeb- zoo li qhov chaw, Gr7 tuaj yeem ua qhov tseem ceeb raws li kev tiv thaiv corrosion (cov txheej txheem zoo sib xws, txo pwm peev)

 

3.Raws li tag nrho lub neej voj voog tus nqi accounting

• Gr7 tus nqi raw khoom yog 30% -50% siab dua li ntawm Gr2, tab sis nws lub neej kev pab cuam nyob rau hauv corrosive ib puag ncig yog 2-5 npaug ntawm Gr2.
• Rau luv luv -kev pabcuam sijhawm (tsawg dua lossis sib npaug li 5 xyoos) thiab cov xwm txheej tsis zoo me ntsis, Gr2 muaj txiaj ntsig zoo dua.
• Rau kev ua haujlwm ntev -Lub sijhawm ua haujlwm (Ntau dua lossis sib npaug li 10 xyoo) lossis cov cuab yeej tseem ceeb nrog kev xeb hnyav, Gr7 tuaj yeem ua tiav tag nrho cov nqi txuag los ntawm kev ncua lub neej kev pabcuam thiab txo kev saib xyuas.

 

4.Cov lus qhia ntxiv rau cov xwm txheej tshwj xeeb

• Kev kho mob: Gr2 rau luv luv- lub sij hawm implants (pob txha fixation rau tes), Gr7 yog qhov tseem ceeb rau ntev - lub sij hawm cog (cov pob qij txha)
• Aerospace teb: Gr2 rau cov khoom siv hauv cov khoom tsis yog- corrosive ib puag ncig; Cov kav dej hauv kev sib cuag nrog cov roj / oxidants yuav tsum tau ntsuas raws li qhov nruab nrab corrosiveness, thiab Gr7 tuaj yeem siv yog tias tsim nyog.