Koj Puas Paub Cov Khoom Ntawm Titanium Alloys Thiab Cov Txheej Txheem Sib Tsoo? - Xov xwm

Cov yam ntxwv machining thiab kev sib tsoo cov nyom cuam tshuam nrogtitanium alloysqia los ntawm lawv cov khoom tshwj xeeb ntawm lub cev thiab tshuaj lom neeg; Txawm li cas los xij, los ntawm kev sib koom ua ke ntawm cov ntaub ntawv tshawb fawb, tribology, thiab kev tsim khoom siv thev naus laus zis, kev lag luam maj mam tsim kom muaj txiaj ntsig zoo thiab meej machining system uas muab kev txhawb nqa tseem ceeb rau siab - khoom tsim khoom kawg.

I. Classification System ntawm Titanium Alloys

Kev faib tawm ntawm titanium alloys yog nyob ntawm qhov sib txawv ntawm microstructure hauv lub xeev annealed. Ib qho kev faib tawm tus qauv tau npaj los ntawm McGillivray hauv xyoo 1956, uas feem ntau faib lawv ua peb pawg:

• - hom titanium alloys: Feem ntau yog tsim los ntawm ib qho -theem qauv, cov alloys pom zoo heev kub tsis kam thiab creep tsis kam, tab sis muaj tsawg plasticity ntawm chav tsev kub. Cov qib ib txwm muaj xws li Ti-5Al-2.5Sn.

• - hom titanium alloys: Feem ntau yog tsim los ntawm ib qho -theem microstructure, cov hlau no tuaj yeem ua tiav lub zog siab los ntawm kev quenching, tab sis muaj cua sov tsis zoo. Qib ib txwm yog TB2.

• + - hom titanium alloys: Featuring dual -phase microstructure uas sib txuas lub zog thiab toughness, Gr5 (Ti-6Al-4V) yog siv dav tshaj plaws. Aluminium stabilizes theem, thaum vanadium stabilizes theem, ua rau muaj kev sib xyaw ua ke zoo tshaj plaws ntawm cov khoom siv dav.

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II. Machining yam ntxwv ntawm Gr5 Titanium Alloy

Raws li ib tug raug duplex titanium alloy, machining cov nyom ntawm Gr5 qia los ntawm peb yam tseem ceeb:

1. Tshuaj rhiab heev: Thaum lub sij hawm thermal deformation, nws nkag siab nrog oxygen thiab nitrogen los ua nplai. Ntawm qhov kub siab tshaj 900 degree, cov ntaub ntawv flaky, tawv, thiab nkig, ua rau kom muaj zog saum npoo thiab txo cov ductility, uas nyob rau hauv lem ua rau machining stresses.

2. Complex Microstructure: Carbides (Fe-C compounds) muaj nyob rau hauv cov microstructure nrog lub siab hardness ntawm HV 1100, tab sis lawv muaj zero cuam tshuam toughness thiab yog nquag mus rau microcrack propagation.

3. Cov thermal conductivity tsis zoo: Cov thermal conductivity tsuas yog 1/15 ntawm aluminium alloys thiab 1/5 ntawm cov hlau, thiab cov thermal diffusivity tseem qis dua. Qhov no ua rau nws nyuaj rau machining tshav kub kom dissipate, ua rau ib tug cia li nce nyob rau hauv lub zos kub.

III. Cov lus qhia rau Innovation hauv Titanium Alloy Sib Tsoo Technology

Txhawm rau daws cov teeb meem uas tau hais los saum toj no, kev lag luam tau ua tiav los ntawm kev txhim kho cov khoom siv thiab cov txheej txheem kev tsim kho tshiab:

1. Txo kev sib tsoo hlawv thiab tawg

• Sib tsoo log xaiv: Hloov cov resin-bonded alumina sib tsoo log nrog ceramic-bonded silicon carbide (GC) los yog cerium- silicon carbide sib tsoo lub log kom txo tau qhov nyiam ntawm cov khoom adhesion.

• Parameter Control: Sib tsoo log linear ceev Tsawg dua los yog sib npaug li 20 m / s, sib tsoo qhov tob Tsawg dua los yog sib npaug rau 0.02 hli, workpiece pub tus nqi 12-16 m / min, ntsuas efficiency thiab zoo.

• Txias thiab Lubrication: Tsim nanofluid sib tsoo kua los txhim kho ob qho tib si tshav kub dissipation thiab lubrication; rau kev sib tsoo qhuav, siv cov log sib tsoo impregnated nrog cov khoom lubricants.

2. Physicochemical Suppression ntawm Sib Tsoo Log Adhesion

• Kev Kawm Mechanism: Qhia tawm tias adhesion tshwm sim los ntawm cov yas ntws thiab shear quab yuam ntawm titanium alloys ntawm qhov kub thiab txias; Lub cev adsorption tuaj yeem ua rau tsis muaj zog los ntawm kev txo qhov kub ntawm qhov sib tsoo.

• Kev daws: Txais qis-kub txias- cua sib tsoo tshuab los tswj qhov sib tsoo cheeb tsam kub hauv qab 400 degree, txo qhov tuab ntawm cov nplaum nplaum.

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