Raws li cov kws tshaj lij hauv CNC machining, Hansheng Automation muaj kev paub ntau yam machining titanium hauv peb CNC machining chaw (nrog ultra- daim iav tiav rau ± 0.002mm raug). Hauv qab no yog cov lus qhia txog titanium, cov khoom siv rau CNC machining.
titanium yog dab tsi?
Ti (atomic naj npawb 22) yog silvery-hloov pauv xim hlau pom nyob rau hauv 1790 thiab industrialized nyob rau hauv 1948. Titanium tus yam ntxwv tseem ceeb tshaj plaws yog nws allotropy: tib lub caij nthuav tawm cov khoom sib txawv vim nws cov qauv siv lead ua sab hauv. Piv txwv li, hauv qab 882 degree, nws nthuav tawm qhov ze - ntim cov qauv hexagonal (zoo plasticity), thaum siab tshaj 882 degree, nws nthuav tawm lub cev -cov qauv cubic nruab nrab (siab zog). Xwb, los ntawm kev sib xyaw nrog cov ntsiab lus xws li Al, V, thiab Sn, qhov / theem piv tuaj yeem siv los tsim cov titanium alloys nrog cov khoom sib txawv.
Dab tsi yog hom titanium ( cais raws li ISO / ASTM cov qauv)?
| Qeb | Hom Qib | Cov yam ntxwv tseem ceeb | Tej kev siv |
|---|---|---|---|
| Kev lag luam Pure Titanium | JIS Qib 1-4 / ASTM Qib 1-4 | Purity >99%, lub zog nce nrog cov ntsiab lus oxygen (Qib 1: feem ntau ductile; Qib 4: lub zog siab tshaj) | Thaum tshav kub kub exchangers (Qib 2), qis- cov hlab ntsha kub (Qib 4) |
| Alpha Titanium Alloys | Qib 23 (Ti-6Al-4V ELI) | Single α-phase structure, high temperature resistance (>500 degree), weldability zoo heev | Aerospace structural qhov chaw, kho mob implants (Qib 23) |
| Alpha + Beta Titanium Alloys | Qib 5 (Ti-6Al-4V, qib classic) | Dual-theem qauv, sib npaug kev ua tau zoo, cua sov- kho tau kom muaj zog | Aircraft cav hniav, automotive fasteners |
| Beta Titanium Alloys | TB Series (piv txwv li, Ti-15V-3Al-3Cr-3Sn) | High strength (>1300MPa), zoo txias formability, yuav tsum tau thermal stability tswj | Springs, aerospace fasteners |
Dab tsi yog cov khoom ntawm titanium (piv rau steel / aluminium)?
| Khoom | Titanium (Qib 5) | 304 Stainless hlau | 6061 Aluminium | Daim ntawv thov tus nqi |
|---|---|---|---|---|
| Qhov ceev (g / cm³) | 4.47 | 7.9 | 2.7 | Lub teeb yuag (43% qhov hnyav txo vs. steel) |
| Tensile zog (MPa) | 950 | 515 | 276 | Lub zog tshwj xeeb (212 MPa·cm³ / g) yog 2.7x ntawm cov hlau |
| Modulus ntawm Elasticity (GPa) | 113.8 | 193 | 69 | Yooj yim khoov, haum rau cov txheej txheem nyuaj |
| Thermal conductivity (W / m · K) | 6.7 | 16.2 | 167 | Yuav tsum muaj -siab txias kom tiv thaiv thermal deformation |
| Seawater Corrosion Rate (mm / xyoo) | <0.001 | 0.1-0.5 | 0.5-1.0 | Thawj qhov kev xaiv rau cov khoom siv marine |
| Biocompatibility | Tsis muaj ion leaching (ISO 5832) | Yuav tsum tau txheej tiv thaiv | Tsis siv tau | Tsuas yog "biophilic hlau" rau orthopedic implants |
Dab tsi yog cov ntsiab lus tseem ceeb ntawm CNC machining titanium?
First, we need to understand the challenges of machining titanium. First, titanium's thermal conductivity is only one-third that of steel. This means that during machining, the material itself has low thermal conductivity, and heat is primarily concentrated on the cutting tool, resulting in high tool wear. Second, at high temperatures, it easily reacts with oxygen or nitrogen, causing overall performance changes. This requires the use of argon shielding or high-pressure coolant (>7 MPa). Thaum kawg, titanium yog nquag deformation thaum lub sij hawm remachining, yuav tsum tau siv cov fixtures nruj thiab luv -edged txiav cov cuab yeej los xyuas kom meej machining kev ncaj ncees.
CNC Machining txheej txheem Optimization rau Titanium
| Txheej txheem txheej txheem | Parameters/Kev daws teeb meem | Lub hom phiaj |
|---|---|---|
| Kev xaiv cuab yeej | Cov cuab yeej Carbide nrog TiAlN txheej (ntse txiav) | Txo cov cuab yeej adhesion (titanium lub nplaum yog 2x ntawm cov hlau) |
| Txiav ceev | Roughing: 40-60m / min; Ua tiav: 80-120m / min | Tswj cov cua sov tawm tswv yim kom tsis txhob annealing softening |
| Pub tus nqi | 0.05-0.15 hli / hniav (30% qis dua hlau) | Txo txiav quab yuam thiab kev co |
| Txias System | Internal coolant spindle + high-pressure coolant (>7MPa, nrog cov khoom siv siab heev) | Chip flushing & txias, 200% lub neej ntev dua |
| Post{0}}Kev ua haujlwm | Sandblasting (Ra 3-5 μm) + sib xyaw acid etching (rau cov khoom kho mob) | Txhim kho pob txha- muaj peev xwm sib txuas (ASTM F67 tau lees paub) |
Puas yog titanium muaj kev nyab xeeb?
Professor of Materials Science thiab Engineering Andrew Minow tau hais tias, "Yog tias koj xav tau cov khoom muaj zog tshaj plaws ntawm qhov hnyav tshaj plaws, titanium yog nws. Yog tias peb ua tau, peb yuav ua txhua yam tawm ntawm titanium." Qhov no hais ntau txog kev nyab xeeb ntawm titanium. Tsis tas li ntawd, titanium yog 100% biocompatible. Lub ntuj tsim TiO₂ passivation zaj duab xis (5-} 10nm tuab) ntawm nws nto cais cov hlau ions los ntawm kev tso tawm thiab tsis yog-allergenic. Cov ntaub ntawv kho mob qhia tau hais tias titanium implants muaj 5-xyoo txoj sia nyob ntawm ntau dua 98%, thiab tau siv dav hauv cov pob qij txha thiab lub plawv stents.
Qhov twg tuaj yeem siv CNC machined titanium qhov chaw?
Titanium qhov chaw muaj ntau yam kev siv, thiab cov hauv qab no yog cov feem ntau.
| Kev lag luam | Tej Cheebtsam | Irreplaceable Advantages ntawm Titanium |
|---|---|---|
| Aerospace | Cav hniav, tsaws iav | txo qhov hnyav, tiv taus ntev - lub sijhawm ua haujlwm ntawm 300 degree |
| Kho mob | Hip prostheses, orthodontic brackets | Tsis muaj kev tsis lees paub, kev sib txuas ncaj qha nrog cov pob txha |
| Marine Engineering | Submarine hulls, seawater li qub | Corrosion kuj yog 100x ntawm stainless hlau |
| Automotive | Turbocharger impellers, ncua kev txuas txuas | Lub zog tshwj xeeb, tiv taus siab -kub qaug zog |
| High -End Manufacturing | Semiconductor jigs, lub tshuab nqus tsev vacuum | Tsis yog- sib nqus, tiv taus qhov chaw huab cua (-200℃txog 500 degree) |
FAQ
Q: Puas yog CNC tsis xav tau hloov kho thaum machining qib titanium sib txawv (xws li Gr2 ntshiab titanium thiab Gr5 alloy)?
A: Yog, lawv ua. Piv txwv li, rau Gr2 ntshiab titanium (siab ductility, tsis tshua muaj zog, tensile zog 345 MPa), tus nqi pub yuav tsim nyog nce (0.12-0.2 hli / tus hniav), thiab txiav ceev yuav so kom txaus rau 60-80 m / min (kom tiav). Cov cuab yeej hnav yog qeeb, ua cov cuab yeej carbide zoo.
For Gr5 alloy (high strength, medium ductility, tensile strength 950 MPa), the feed rate needs to be reduced (0.05-0.15 mm/tooth), and the roughing speed should be controlled at 40-60 m/min. Diamond-coated or TiAlN-coated tools must be used, and enhanced cooling (such as high-pressure internal coolant >10 MPa) yuav tsum tau tiv thaiv cov khoom hardening thiab cov cuab yeej chipping.
Q: Puas muaj kev tuav tshwj xeeb rau cov chips / khib nyiab tsim los ntawm titanium machining? Puas muaj kev nyab xeeb?
A: Yog lawm, vim tias titanium shavings ua rau muaj kev pheej hmoo ntawm kev sib tsoo, lawv yuav tsum tau ua raws li hauv qab no:
Ua ntej, khaws cia rau hauv cov thawv ntim hlau kaw, saib xyuas kom tsis txhob muaj kev sib tsoo ntau dhau. Tom qab ntawd, lawv yuav tsum tau rov ua dua los ntawm lub tuam txhab tsim nyog titanium cov khoom siv rov ua dua tshiab.
Q: Puas titanium qhov chaw yuav tsum tau kho cua sov tom qab machining? Thaum twg yog qhov kev kho cua sov tsim nyog?
A: Qhov no yuav tsum muaj ib rooj plaub-los ntawm- rooj plaub kev tshuaj xyuas. Piv txwv li, tsaws iav pob qij txha nyob rau hauv aerospace load-cov kabmob qhov chaw yuav tsum muaj lub tshuab nqus tsev twj tso kua mis annealing ntawm 650℃rau 2 teev tom qab machining kom tshem tawm cov kev ntxhov siab sab hauv. Kev cog hniav kho mob yuav tsum tau qis -kub annealing ntawm 550℃rau 1 teev kom ruaj khov cov khoom siv. Cov ntawv thov uas tsis xav tau kev kho cua sov suav nrog cov khoom siv titanium zoo nkauj thiab cov vaj tsev.