7xxx series txhuas daim hlau paub txog lawv qhov tshwj xeeb lub zog-rau-qhov hnyav piv, ua rau lawv xaiv rau kev lag luam ua haujlwm siab. Hauv phau ntawv qhia no, peb yuav rhuav tshem txhua yam koj xav paub txog cov tsev neeg hlau no, los ntawm kev sib xyaw, machining thiab daim ntawv thov.
7xxx Series Aluminium yog dab tsi?
Cov7xxx series txhuas alloy belongsrau tsev neeg zinc-magnesium alloy (xws li 7075, 7050, 7475), tshwj xeeb tsim rau cov khoom siv nrog lub zog siab. Cov yam ntxwv tseem ceeb muaj xws li:
Cov khoom xyaw tseem ceeb: zinc (5-8%) + magnesium + tooj liab.
Kev kho cua sov: Feem ntau cov qib nrog kev kho cua sov (T6 / T7 temper) rau kev txhim kho durability.
Lub zog: Tensile zog txog 570 MPa (ntau tshaj li cov hlau ntau).
Lus Cim: Corrosion kuj yog me ntsis qis dua 6 series aluminium alloy (txheej txheej tiv thaiv).
7075 yog cov feem ntau 7xxx series txhuas alloy, cov yam ntxwv tseem ceeb yog lub zog siab, kev qaug zog zoo heev, kev siv ntau yog aviation ncej, khoom siv tub rog, thiab lwm yam.
Yog vim li cas xaiv ib7-series aluminium alloy phaj
Ultra-High Strength: Zoo tagnrho rau cov khoom siv thauj khoom.
Lub teeb: 1/3 qhov ntom ntawm cov hlau.
Thaum tshav kub kub Resistance: khaws cov khoom ntawm qhov kub siab.
Machinability: Ua tiav nruj tolerances nrog cov cuab yeej tsim nyog.
7 series ntawm aluminium alloy phaj kev txawj ntse
Kev xaiv cuab yeej
Cov cuab yeej txiav: Carbide lossis polycrystalline pob zeb diamond (PCD) cov cuab yeej.
Cov cuab yeej Geometry: Cov kaum sab xis siab (12 ° - 15 °) kom txo tau cua sov.
Lubrication: Siv cov mist coolant kom txo kev sib txhuam.
Ceev & Pub Cov Lus Pom Zoo
Milling: 800-1,200 SFM (nto taw taw ib feeb).
Drilling: 150-300 RPM nrog peck drilling kom tshem cov chips.
Tsis txhob Sib Tham: Ua kom ruaj ntseg daim hlau nrog lub tshuab nqus tsev.
Post-Machining Care
Stress Relief: Anneal qhov chaw los tiv thaiv warping.
Anodizing: Siv hom II lossis III anodizing rau kev tiv thaiv corrosion.
Common Challenges & Solutions
Kev nyuaj siab Corrosion Cracking:
Ua rau: Residual stresses + humid ib puag ncig.
Kho: Siv T73 temper, siv cov txheej tiv thaiv.
Galling Thaum Threading:
Ua rau: Cov ntsiab lus zinc siab heev.
Kho: Siv coated kais dej; lubricate nrog hnyav-duty roj.
Cov ntawv thov saum toj kawg nkaus ntawm7xxx Aluminium Phaj
Aerospace: Wing spars, tsaws iav.
Kev Tiv Thaiv: Armored tsheb Cheebtsam.
Cov Kev Ua Si: Tsheb kauj vab ncej, cov khoom siv nce toj.
Automotive: Siab-ntsuas cav qhov chaw.
Post lub sij hawm: Mar-14-2025