Cov txiaj ntsig thiab qhov tsis zoo ntawm TC4 (GR5) titanium alloy screws yog dab tsi?

I. Cov Txiaj Ntsig Tseem Ceeb

1. Sib dua, nrog rau qhov zoo tseem ceeb uas ua rau txuag tau qhov hnyav

Titanium alloy muaj qhov ceev ntawm kwv yees li 4.51 g / cm³, piv rau 7.85 g / cm³ rau cov hlau carbon ib txwm thiab 7.93 g / cm³ rau 304 stainless hlau. Rau cov ntsia hlau ntawm tib qhov loj me thiab cov lus qhia, titanium ntsia hlau tsuas yog hnyav li 57% ntau npaum li cov ntsia hlau hlau. Daim Ntawv Thov: Tsheb kauj vab, tsheb kauj vab roob, thiab kev hloov kho tsheb - qhov twg lawv siv dav los hloov cov khoom siv hlau, txo qhov hnyav tsis muaj zog yam tsis muaj kev cuam tshuam rau lub zog ntawm cov qauv thiab txhim kho kev tuav; hauv cov khoom siv aerospace, lawv pab txo qhov hnyav, txo cov khoom siv tag nrho, thiab txuag hluav taws xob.

2. Lub zog tshwj xeeb siab heev

TC4 titanium alloy muaj lub zog tensile ntau dua 860 MPa. Txawm hais tias nws lub zog tag nrho qis dua li ntawm cov hlau alloy muaj zog siab, nws lub zog tshwj xeeb ntau dua li cov hlau carbon thiab stainless hlau. Qhov no txhais tau tias rau tib qhov kev xav tau lub zog, titanium screws tuaj yeem ua kom sib dua; rau tib qhov hnyav, titanium muaj peev xwm thauj khoom ntau dua. Nws yog qhov zoo tagnrho rau cov khoom siv precision uas xav tau ob qho tib si qhov hnyav qis thiab lub zog siab.

3. Kev Tiv Thaiv Kev Sib Tsoo Zoo heev

Thaum titanium kov cua, nws tam sim ntawd tsim ib txheej passivation ntom ntom thiab ruaj khov ntawm titanium dioxide, uas tam sim ntawd kho nws tus kheej yog tias puas lawm.

Tiv taus rau: huab cua, dej nag, dej hiav txwv ntsev tsuag, qhov chaw noo noo, cov kua qaub tsis muaj zog thiab alkalis, chloride ions; nws yuav tsis xeb txawm tias siv ntev hauv ntug dej hiav txwv, sab nraum zoov, lossis cov av noo siab.

Qhov Zoo Sib Piv: 304 stainless hlau tseem yuav raug kev txom nyem los ntawm kev xeb thiab xeb hauv cov chaw ntsev dej hiav txwv ntev; titanium alloys yuav luag tsis muaj zog rau qhov no.

Lus Cim: Tsuas yog siv rau ib puag ncig ib txwm muaj xwb; tsis suav nrog cov xov xwm uas muaj zog heev.

4. Kev Ua Haujlwm Ruaj Khov ntawm Qhov Kub Siab thiab Qis

Kub qis: Nws khaws nws cov tawv txawm tias nyob ib puag ncig -200 ° C thiab tsis raug kev txom nyem los ntawm qhov kub qis brittleness thiab tawg, tsis zoo li qee cov hlau;

Kub siab: Nws tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev ntawm qhov kub txog li 400 ° C nrog qhov tsis zoo ntawm cov khoom siv kho tshuab. Nws yog qhov tshwj xeeb zoo rau cov ntawv thov hauv kev tsav dav hlau thiab cov khoom siv tshwj xeeb uas cuam tshuam nrog kev hloov pauv kub thiab txias.

5. Tsis yog hlau nplaum

Cov titanium alloys yog cov khoom siv uas tsis muaj hlau nplaum thiab tsis raug rub los ntawm cov hlau nplaum. Lawv tsim nyog rau kev siv hauv cov khoom siv MRI, cov cuab yeej siv hluav taws xob precision, radar systems, sensors, thiab lwm yam kev siv, vim lawv tsis cuam tshuam nrog cov teeb liab magnetic lossis ua rau muaj kev cuam tshuam magnetic attraction, ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov fasteners hauv cov cuab yeej tshwj xeeb.

6. Kev sib raug zoo ntawm Biocompatibility

Titanium tsis muaj tshuaj lom, ruaj khov nyob rau hauv ib puag ncig ntawm cov kua dej hauv lub cev tib neeg, thiab tsis tawm cov tshuaj lom. Nws yog qhov tsim nyog rau kev siv rau hauv kev cog hniav kho mob thiab cov khoom siv ua zaub mov (nco ntsoov tias cov ntsia hlau titanium kev lag luam thiab cov qib titanium kho mob yog sib txawv thiab yuav tsum tsis txhob siv hloov pauv).

7. Ntau Yam Kev Ua Tiav Ntawm Qhov Chaw Thiab Qhov Zoo Nkauj

Titanium tuaj yeem raug xuab zeb los yog txhuam, thiab nws kuj tuaj yeem raug anodized los tsim ntau yam xim, suav nrog xiav, kub, ntshav, thiab zaj sawv. Cov xim no yog los ntawm cov qauv cuam tshuam ntawm cov txheej oxide - lawv tsis tau pleev xim rau - thiab tiv taus kev ploj mus. Kev zoo nkauj yog qhov tseem ceeb heev rau cov khoom siv tom qab maus taus thiab tsheb kauj vab.

8. Kev Tiv Thaiv Kev Qaug Zog Zoo heev

Nyob rau hauv cov xwm txheej ntawm kev hloov pauv thiab rov ua dua kev ntxhov siab (tsheb co, lub cav co tas mus li), nws qhov kev tiv thaiv kev qaug zog zoo dua li ntawm ntau cov hlau tsis xeb, thiab nws tsis tshua muaj kev tawg hauv qab kev co ntev.

II. Qhov Tsis Zoo

1. Cov Nqi Yuav Khoom Siab

Cov khoom siv titanium raw kim heev thaum pib, thiab qhov no ua rau muaj teeb meem ntawm kev ua titanium, cov cuab yeej hnav ntau, thiab lub sijhawm ua khoom ntev dua. Rau cov lus qhia tib yam, TC4 titanium screws kim dua li 304 thiab 316 stainless hlau screws, thiab kim dua li cov carbon steel screws ib txwm muaj. Kev siv lawv ntau hauv cov khoom siv txheem yuav ua rau cov nqi nce ntxiv.

2. Qhov nyuaj ntawm qhov chaw ua rau lawv yooj yim raug stripped threads

Lub TC4 matrix tsis muaj qhov nyuaj siab (kwv yees li HRC 30–34) thiab tsis tawv npaum li cov hlau alloy uas tau quenched. Hom qhov (lub hnub qub zoo li / hex socket) feem ntau yuav raug puag ncig lossis stripped thaum siv lub zog ntau dhau. 👉 Cov Kev Cai Siv: Kev sib dhos yuav tsum ua raws li cov nqi zog pom zoo; tsis txhob nruj dhau. Pom zoo kom siv lub wrench torque.

3. Cov xov yog qhov yooj yim rau kev vuam txias (kev ntes)

Titanium muaj qhov sib txhuam siab heev. Thaum ob lub titanium sib txuas ua ke ncaj qha, nyob rau hauv cov xwm txheej ntawm kev siab thiab kev sib txhuam los ntawm cua sov, kev sib txuas ntawm cov hlau me me - hu ua kev vuam txias - tuaj yeem tshwm sim ntawm cov xov. Thaum nruj, cov xov yooj yim rau kev ntes, ua rau kev sib cais tom qab nyuaj heev. Kev yuam kom sib cais tuaj yeem ua rau cov xov snapping lossis stripping. 👉 Kev daws teeb meem: Rau cov titanium-rau-titanium sib dhos, nws yog ib qho tseem ceeb kom siv cov tshuaj tiv thaiv kev ntes lossis cov neeg sawv cev tiv thaiv kev ntes titanium. Yog tias cov ntsia hlau titanium siv nrog lub hauv paus stainless hlau, qhov kev pheej hmoo ntawm kev vuam txias raug txo qis heev.

4. Tsis tiv taus cov xov xwm corrosive heev

Cov txheej passivation tuaj yeem raug rhuav tshem hauv qee qhov chaw muaj zog acid: hydrofluoric acid, concentrated hydrochloric acid, thiab kub concentrated phosphoric acid tuaj yeem corrode titanium. Titanium screws yuav tsum tsis txhob siv rau hauv cov xwm txheej ua tshuaj lom neeg zoo li no.

5. Modulus qis ntawm elasticity, rigidity tsawg

Titanium muaj ib qho modulus ntawm elasticity uas tsuas yog ib nrab ntawm cov hlau. Nyob rau hauv tib lub zog tensile, titanium alloys qhia tau tias muaj kev hloov pauv elastic ntau dua li hlau. 👉 Daim Ntawv Thov: Siv nrog kev ceev faj hauv cov khoom siv thauj khoom uas muaj cov kev cai nruj rau kev ruaj khov thiab kev hloov pauv tsawg kawg nkaus. Haum rau cov ntawv thov uas muaj kev hloov pauv thauj khoom thiab qhov twg qhov hnyav txo qis yog qhov tseem ceeb; tsis haum rau cov ntawv thov ruaj khov uas xav tau kev ruaj khov siab heev thiab tswj hwm cov kev hloov pauv me me.

6. Nyuaj rau tshuab; lub sijhawm ua khoom ntev rau cov khoom tsis yog tus qauv

Titanium muaj cov nplaum zoo heev thiab feem ntau lo rau cov cuab yeej txiav thaum lub sijhawm ua haujlwm, ua rau muaj kev xav tau ntau rau cov cuab yeej tshuab thiab cov cuab yeej txiav. Cov lus qhia tshwj xeeb uas tsis yog tus qauv ua rau cov nqi ua haujlwm siab dua, thiab cov voj voog tsim khoom ntev dua li cov rau cov khoom siv hlau tsis xeb.

7. Tsis haum rau cov ntawv thov kub heev

Hauv cov chaw kub tshaj 400 ° C, cov hlau titanium maj mam nqus cov hydrogen thiab oxygen, ua rau cov khoom siv tawg thiab nws lub zog txo qis; yog li ntawd, lawv tsis tuaj yeem siv tas mus li hauv cov chaw kub siab dhau lub sijhawm ntev.

III. Cov Lus Qhia Txog Kev Xaiv & Kev Teeb Tsa

Siv lub torque wrench ib txwm; tsis txhob zawm dhau.

Thaum khi titanium rau titanium, nco ntsoov siv cov tshuaj tiv thaiv kev ntes.

Cov ntsia hlau titanium zoo heev hauv cov pos huab ntsev ntawm ntug dej hiav txwv thiab cov chaw noo noo sab nraum zoov; rau tus qauv, tus nqi qis hauv tsev, cov hlau tsis xeb muab tus nqi zoo dua rau cov nyiaj.

Qib Sib Txawv: TC4 (GR5) yog qib feem ntau ntawm cov titanium alloy screws; titanium ntshiab (TA1 / TA2) yog softer thiab muaj kev tiv thaiv corrosion zoo dua, tab sis muaj zog qis dua thiab feem ntau tsis siv rau kev hloov kho.

TC4 titanium alloy ntsia hlau yog lub teeb yuag nrog lub zog tshwj xeeb; lawv tiv taus xeb thiab xeb hauv cov chaw ntsev tsuag, tsis yog hlau nplaum thiab tsis qaug zog, thiab tuaj yeem anodized los tsim ntau yam xim; lawv tsim nyog rau kev hloov kho maus taus thiab tsheb kauj vab, nrog rau cov khoom siv aerospace precision. Qhov tsis zoo suav nrog tus nqi siab, qhov nyuaj ntawm cov khoom siv tsawg, thiab nyiam vuam txias thaum lub sijhawm sib dhos titanium-rau-titanium threaded. Kev sib dhos xav tau kev tswj hwm torque thiab kev siv cov tshuaj tiv thaiv kev ntes; lawv tsis haum rau cov chaw muaj corrosive heev xws li cov uas muaj hydrofluoric acid lossis concentrated hydrochloric acid.