Cast Aluminium Machining: CNC Guide, Ceev & Tolerances

Ua ke ze ntawm -net-puab casting nrog ntau-axis CNC machining txo cov khoom siv pov tseg los ntawm 40% mus rau 70% piv rau cov khoom siv pob zeb, tab sis yuav tsum muaj kev tswj nruj ntawm cov tawv nqaij qhov tob (0.5 hli mus rau 1.0 hli), silicon theem abrasiveness (8.5% rau 9.5% roj av), Si hauv cov roj av porosity. Daim ntawv qhia kev qhia no qhia txog cov kev txiav txim siab meej, cov cuab yeej substrates, cov nyiaj them rau kev ua haujlwm, thiab cov kev cai tsim kho kom ua tiav ± 0.010 hli tolerances thiab Ra 0.8 µm nto ua tiav ntawm cam khwb cia txhuas qhov chaw.

Cov ntsiab lus tseem ceeb ntawm Cast Aluminium CNC Machining: Nyob ze -Net-Shape Raws Li Precision

Cast aluminium machining sawv cev rau kev sib tshuam ntawm siab - ntim ze ntawm -net- zoo li hlau tsim thiab precision subtractive manufacturing. Es tsis txhob hogging tawm loj ntim ntawm raw khoom los ntawm cov khoom wrought Tshuag, engineers qhia cov txheej txheem casting (xws li siab- siab tuag casting, lub ntiajteb txawj nqus mus tas li pwm, los yog xuab zeb casting) los tsim lub hauv paus geometry, ua raws li cam khwb cia txhuas CNC machining kom tiav ib qho tseem ceeb functional nta: bearing bores, O-ring mounted threaded grooves. Rau cov lus qhia dav dav ntawm cov txheej txheem CNC teeb tsa thoob plaws ntau yam aluminium alloys, xa mus rau peb lub hauv paus.Aluminium CNC machining phau ntawv qhia.

Nyob rau hauv siab - ntim ntau lawm thoob plaws tsheb, neeg hlau, thiab cov khoom siv hluav taws xob, ua ke nrog kev ua tiav ntawm CNC txiav tshuab lub sij hawm mus txog 65% thiab txo cov khoom siv raw khoom piv rau kev ua haujlwm tag nrho los ntawm billet. Txawm li cas los xij, kev kho cov cam khwb cia hlau zoo li tus qauv wrought alloys (xws li Al6061-T6) thaum lub sij hawm CNC programming coj ncaj qha mus rau lub cuab tam ceev flank hnav, kev puas tsuaj kais tawg, thiab sealing tsis ua hauj lwm nyob rau hauv helium leak test.

Cam khwb cia alloys muaj feem pua ​​​​ntawm silicon thiab hlau los txhim kho yaj fluidity thiab txo cov pwm shrinkage, tab sis cov tib lub ntsiab tsim abrasive intermetallic theem. Tsis tas li ntawd, raw castings qhia txog qhov sib txawv ntawm qhov geometry, lub kaum sab xis, cov kab sib cais, thiab cov porosity subsurface.

Xiamen Dazao Machinery (tsim nyob rau hauv 2000, tau ntawv pov thawj nyob rau hauv ISO9001: 2015 thiab IATF16949: 2016) ua haujlwm 5-axis machining chaw thiab nplooj siab casting kab. Phau ntawv qhia no qhia txog cov ntaub ntawv pov thawj los ntawm peb lub tshuab khw hauv pem teb los pab tsim engineers, pab pawg tsim khoom, thiab cov thawj coj saib xyuasmachining cam khwb cia aluminium qhov chawnrog xoom- tswj qhov tsis zoo.

Kev sib piv Metallurgical: Cast Aluminium vs Billet Aluminium hauv Precision CNC Milling

Xaiv ntawmcam khwb cia aluminium vs billet aluminiumdictates tsis tau tsuas yog pib siv cov cuab yeej siv thiab daim - cov nqi ib feem, tab sis kuj yog cov cuab yeej txoj hauv kev, txiav tsis, thiab cov qauv tsim kho.

Microstructural thiab Metallurgical Divergence

Wrought billet (xws li extruded 6061-T6 los yog forged 7075-T6) undergoes yas deformation thaum lub sij hawm tsim khoom, yielding ib tug ntom, homogeneous, oriented grain qauv dawb ntawm sab hauv voids. Nws nthuav tawm lub zog tensile lub zog, siab elongation (12% mus rau 17%), thiab kev sib xyaw nti tsim thaum lub sij hawm milling.

Cam khwb cia txhuas alloys (xws li A356, A380, ADC12) solidify nyob rau hauv lub pwm kab noj hniav, tsim ib tug tsis yog -directional, dendritic microstructure. Eutectic silicon precipitates thoob plaws hauv aluminium matrix. Cov silicon hais (nrog Vickers hardness tshaj 1000 HV) ua raws li cov microscopic abrasives tiv thaiv qhov txiav ntug. Chip tsim hloov los ntawm cov ribbons tas mus li mus rau tsis tu ncua, tawg tawg yooj yim tab sis tsim micro- cuam tshuam rau cov cuab yeej txiav.

Casting Skin Effects on Cutting Tool Life

Cov txheej txheej sab nrauv ntawm ib qho li - ntu ntu (cov tawv nqaij casting) txawv ntawm cov khoom tseem ceeb:

· Txias Txheej:Kev txias txias ntawm phab ntsa pwm ua rau ultra- ntom, zoo- cov tawv nqaij tawv (0.3 hli mus rau 0.8 hli tuab) nrog cov tawv tawv dua li cov tub ntxhais sab hauv.

· Cov Kab Mob Ntog:Cov tawv nqaij muaj cov khoom siv aluminium oxides (Al₂O₃), embedded pwm tso cov neeg ua hauj lwm (silicone/wax-raws li polymers nyob rau hauv tuag casting), thiab residual silica hais los ntawm cov xuab zeb casting pwm.

· Machining Txoj Cai:Yog qhov tob ntawm kev txiav (a_p) muab cov cuab yeej taw qhia ncaj qha rau hauv cov txheej txheem ntawm daim tawv nqaij no, lub ntsej muag flank rub tawm oxides, ua kom cov micro- chipping thiab abrasive hnav. Cov programmers yuav tsum tau teeb tsa qhov tob tob ntawm kev txiav tsawg kawg yog 1.5 npaug ntawm daim tawv nqaij tuab (a_pNtau dua lossis sib npaug li 1.2 hli rau cov xuab zeb castings; a_pNtau dua los yog sib npaug li 0.8 hli rau kev tuag castings) yog li cov cuab yeej ntug txiav hauv qab cov tawv nqaij abrasive rau hauv cov niam txiv cov hlau.

Residual Stress Distribution thiab Part Distortion

Internal stresses nyob rau hauv cam khwb cia Cheebtsam tshwm sim los ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov ribs nyias thiab tuab tus thawj coj. High-pressure tuag castings nqa high compressive deg stresses thiab tensile core stresses.

Thaum CNC lub ntsej muag milling tshem tawm cov tawv nqaij los ntawm ib sab ntawm ib qho nyias -walled ib feem, qhov kev ntxhov siab no hloov pauv, ua rau cov khoom sib tsoo lossis lub caij nplooj ntoos hlav- rov qab. Billet aluminium muaj qhov kev xav tau extrusion kev ntxhov siab uas tuaj yeem txo tau ntawm T651 ncab; cam khwb cia txhuas yuav tsum tau tshwj xeeb stabilization cycles, multi-theem clamping, los yog roughing-mus rau-txoj kev nyuaj siab-relief pauses los tuav txhim khu kev qhaCNC machining tolerances rau txhuas.

Kev sib piv: Cast Aluminium vs Billet Aluminium

Alloy-Kev ua haujlwm tshwj xeeb CNC: A356-T6 vs A380 vs ADC12 vs AlSi10Mg

Xaiv qhov raug casting alloy dictates txiav ceev (V_c), pub rau tus hniav (f_z), thiab kev xaiv ntawm cov cuab yeej txiav substrate.

A356 / A356-T6 Aluminium CNC Machining

A356 (7.0% Si, 0.35% Mg) yog thawj alloy rau structural xuab zeb casting, peev casting, thiab qis-siab / nqus pwm mus tas li.

· Machining Properties:Nyob rau hauv raws li - nrum (F) mob, A356 yog gummy, nquag ua -nce ntug (BUE) ntawm cov cuab yeej txiav daim di ncauj. Tom qabA356-T6 machiningkev kho cua sov thiab kev laus dag (yielding ~ 85 HBW), lub matrix hardens ho. Eutectic silicon spherodizes, txhim kho nti breakability thiab enablingcam khwb cia aluminium millingnrog huv qhov chaw tiav mus rau Ra 0.4 µm.

· Cov ntawv thov ib txwm:Automotive suspension knuckles, EV motor thav duab, aerospace brackets, thiab marine fluid vaj tsev nyob qhov twg yuav tsum muaj lub siab ntim thiab cov qauv ductility.

A380 Tuag Casting Machining

A380 (8.5% Si, 3.5% Cu, 1.3% Fe max) yog qhov dav tshaj plaws uas tau teev tseg siab - siab tuag casting alloy thoob ntiaj teb.

· Machining Properties:Cov ntsiab lus tooj liab siab (3.0% mus rau 4.0%) nce alloy hardness thiab shear zog, thaum silicon muab fluidity thaum lub sij hawm siab - nrawm tuag filling. ThaumA380 aluminium machining, thawj silicon nplej ua zoo li cov xov xwm sib tsoo zoo. Uncoated tungsten carbide cov cuab yeej muaj kev ua kom lub ntsej muag abrasive tsis pub dhau 200 txog 400 qhov chaw.

· Tooling Solution:Polycrystalline Pob Zeb Diamond (PCD) inserts thiab kawg mills yog tus qauv rau siab - ntimA380 tuag casting machining, multiplying tool life by 15x to 30x over solid carbide.

· Cov ntawv thov ib txwm:Automotive kis tau tus mob npog, cov cuab yeej hluav taws xob vaj tse, hluav taws xob cua sov dab dej, thiab lub cev twj tso kua mis. Rau siab - ntim ntim, sib koom ua ke ntau -axis CNC xov nrog Dazao'saluminium siab -siab tuag casting muaj peev xwmmuab siab kawg unit nqi efficiency.

Alternative Casting Alloys: ADC12 thiab AlSi10Mg

· ADC12 (JIS H 5302):Sib npaug rau A380 nrog kev ruaj ntseg zoo dua thiab qis dua tooj liab variation. Dav siv nyob rau hauv Asian precision manufacturing. Qhia zoo tib yam abrasive hnav qauv ntawm milling cutters thiab kais dej.

· AlSi10Mg:Feem ntau hauv ob qho tib si qis -pressure casting thiab additive manufacturing (DMLS/SLM). Muab cov machinability sib npaug nrog cov cuab yeej siv nruab nrab; yuav tsum tau muaj qhov zoo zoo -rake milling cutters los tiv thaiv smearing thaum lub sij hawm qis - pub kev txiav tiav.

Pom zoo Speeds, Pub, thiab Tooling Parameters

Lub khw tseem ceeb-Pem hauv ntej hom tsis ua haujlwm thiab DFM txo qis hauv Cast Part Machining

Production tsis ua hauj lwm nyob rau hauvmachining cam khwb cia aluminium qhov chawtsis tshua muaj tshwm sim los ntawm tag nrho cov programming yuam kev. Hloov chaw, cov nqi seem nce vim qhov tsis sib xws ntawm microstructural, hloov cov ntaub ntawv, thiab txiav cov cuab yeej hnav tsis zoo rau cam khwb cia alloys. Hauv qab no yog peb qhov tseem ceeb ntawm kev tsim khoom tsis ua haujlwm uas tau ntsib nyob rau hauv siab - ntim ntau lawm thiab cov txheej txheem engineering Dazao siv los tshem tawm lawv.

Hom Tsis Ua Haujlwm 1: Subsurface Porosity nthuav tawm ntawm O-Nplhaib Sealing Ridges

Qhov teeb meem

High-pressure tuag castings nthuav tawm cov tawv nqaij tawv tawv (0.3 hli txog 0.6 hli tuab). Thaum lub CNC milling cutter tshuab O- nplhaib zawj lossis lub ntsej muag- sealing channel mus rau qhov tob ntawm 1.0 hli mus rau 1.5 hli, nws txiav ncaj qha los ntawm qhov ciam teb txias rau hauv thaj tsam ntawm cov khoom ntim thiab cov roj nkag.

Thaum cov ntaub ntawv nyoos dhau los ntawm kev tshuaj xyuas sab nraud, lub tshuab ua kom pom tseeb micro-voids (0.05 mm txog 0.30 mm inch). Nyob rau hauv helium huab hwm coj spectrometer xau kuaj ntawm 3.0 bar, cov voids raug tsim tawm txoj hauv kev tshaj li qhov pib ntawm lub tsheb ntawm 1 × 10⁻⁶ mbar⋅L/s.

Kev daws teeb meem Engineering

1. Tooling thiab Gating Optimization:Hauv kev tuag casting pwm tsim, Dazao tso hydraulic nyem pins dhau qhov tseem ceeb sealing tus thawj coj. Ua kom tus pin nyem thaum lub sij hawm solidification siv lub zog hauv zos (txog 120 MPa), sib tsoo cov hnab roj hmab sab hauv ua ntej tag nrho khov.

2. Machining Tshuag txwv:Txwv qhov nominal cam khwb cia txhuas machining nyiaj pub rau ntawm sealing ntsej muag mus rau qhov siab tshaj plaws ntawm 0.40 hli. Qhov no khaws cia cov txheej uas tsis yog - ntxeem tau txias.

3. Anaerobic Vacuum Impregnation:Rau cov xuab zeb lossis lub ntiajteb txawj nqus cam khwb cia A356 cov khoom sib sib zog nqus uas yuav tsum tau ua, cov khoom hauv lub tshuab nqus tsev impregnation ib ASTM C1580 / MIL-I-17563C siv cov thermoset polymer resins ua ntej CNC tiav tiav.

Failure Mode 2: Datum Drift thiab Phab Ntsa Thickness Variation los ntawm Draft Angles thiab Parting Flash

Qhov teeb meem

Raw castings tsis muaj square, planar nto. Lawv feature 1^∘rau 2^∘cov kaum sab xis kom yooj yim ejection los ntawm cov hlau tuag, nrog rau kev sib faib kab sib txawv mus txog ± 0.35 hli raws li cov cuab yeej tuag hnav. Kev thov kom raugaluminium CNC machining tsim qauvThaum lub sij hawm CAD qauv qauv yog tsim nyog los tsim kom muaj lub hom phiaj cov ntaub ntawv.

Thaum tus txheej txheem CNC vise clamps ncaj qha mus rau raw cam khwb cia cov ces kaum, ob qhov yuam kev tshwm sim:

· Cov tivthaiv muaj kev nce toj tilting vector thaum hydraulic clamp actuation.

· Cov txheej txheem kev sib koom ua haujlwm tau tsim (X0, Y0, Z0) hloov mus rau cov cores sab hauv, ua rau cov phab ntsa tuab tom qab ua haujlwm kom poob qis dua qhov tsawg kawg nkaus engineering txwv (piv txwv li, thinning ntawm 3.0 hli mus rau 1.2 hli, ua rau cov txheej txheem tsis ua hauj lwm nyob rau hauv lub siab tawg).

Kev daws teeb meem Engineering

1. Cast Datum Target Pads:Tsim tshwj xeeb, tsis yog - ua haujlwm datum lub hom phiaj pads (ib ASME Y14.5-2018) rau hauv cov pwm casting. Cov ntaub qhwv no nyob deb ntawm txoj kab sib faib thiab ejector tus pin qhov chaw.

2. Ob-Theem Machining Architecture:

· Peb 10:Clamp ntawm qhov tsis yog - qhov tseem ceeb cam khwb cia; siv ib qho - taw tes lub ntsej muag zeb los ntxuav thiab tsim nyog rau peb lub ntsiab datum pads.

· Peb 20:Nrhiav cov khoom siv ncaj qha rau ntawm cov khoom siv hauv cov ntaub ntawv siv cov khoom siv tawv tawv thiab tus kheej - nruab nrab lub puab tsaig rau txhua qhov tseem ceeb ntawm qhov tho qhov thiab qhov kev txiav.

3. Ntawm -Machine Probing:Hla peb precision5-axis CNC machining cov kev pab cuamcov kab, Dazao integrates Renishaw optical sojntsuam los ntsuas casting feature dynamically, executing macro- hloov pauv hloov pauv (G54.1 P1) ua ntej txiav txoj hauv kev.

Hom Kev Ua Tsis Taus 3: Kawg -Kev Ua Haujlwm Kais tawg los ntawm Silicon Inclusions

Qhov teeb meem

Hauv siab - ntimA380 aluminium machining, txiav cov kais dej feem ntau ua rau ntawm qhov muag tsis pom qhov thaum lub sij hawm kawg ntawm machining cycles. Qhov tawg M4 los yog M5 kais embedded hauv ib qho kim casting scraps raw casting ntxiv rau tag nrho cov khoom siv CNC lub sij hawm.

Qhov ua rau yog metallurgical: thaum lub sij hawm molten hlau ntws, thawj silicon crystals thiab hlau intermetallic ( -Al₅FeSi koob) cais nyob rau hauv qeeb-cov tub ntxhais txias qhov chaw uas muaj qhov drilled. Raws li tus qauv HSS txiav kais txiav cov xov sab hauv, cov kev sib txuam nyuaj no nti cov micro- txiav ntug ntawm tus kais dej, tsim cov torque spikes uas tshaj qhov torsional shear zog ntawm lub cuab yeej.

Kev daws teeb meem Engineering

1. Xov Milling Tshaj Tapping:Rau qhov loj dua lossis sib npaug ntawm M4, hloov cov kais dej nrog cov khoom carbide lossis pob zeb diamond-coated xov mills. Yog hais tias ib tug xov zeb ntsib hnav, nws yuav tsis txeeb nyob rau hauv lub qhov; nws tsuas yog recedes yam tsis muaj kev cuam tshuam.

2. Daim Ntawv Tapping (Cold forming):For ductile cast alloys (such as A356-T6 with elongation >5%), siv yob- daim ntawv kais es tsis txhob txiav cov kais dej. Daim ntawv tapping displaces hlau ntau dua li txiav nws, tsim kom muaj zog nplej ntws ncig cov hauv paus hniav thiab tshem tawm cov nti khiav tawm jamming hauv qhov muag tsis pom.

Engineering Standards for Cast Aluminium Machining Allowance thiab CNC Tolerances

Kev faib tawm kom raugcam khwb cia aluminium machining Tshuagbalances tooling lub neej, lub sij hawm voj voog, thiab cov khoom ruaj khov. Tshaj Tshuag nce lub sij hawm txiav thiab nthuav tawm porosity; Cov khoom lag luam tsis txaus ua rau cov khoom tsis huv dub cam khwb cia.

Machining Allowance Guidelines los ntawm Casting Method

· Siab-Pressure Die Casting (HPDC):Machining pub yuav tsum tau tuav ntawm 0.5 hli mus rau 1.0 hli. Qhov ntau yam no khaws cia rau sab nrauv siab - ntom nti txheej thaum muab kev koom tes txaus rau ib zaug - dhau qhov kawg milling.

· Tsawg-Pressure & Gravity Permanent Pwm Casting:Machining nyiaj tso cai yog teem rau 1.5 hli mus rau 2.5 hli rau account rau thermal pwm expansion thiab core hloov.

· Xuab zeb Casting:Machining pub yuav tsum tau 3.0 hli mus rau 5.0 hli kom haum rau cov xuab zeb shrinkage variation thiab kom tshem tawm cov ntxhib saum npoo oxide inclusions.

Tau Txais Machining Tolerances

Ua tiavnruj aluminium CNC machining kam rau uayuav tsum tau suav rau cov qauv ntawm elasticity (E≈71 GPa) thiab thermal expansion coefficient (≈21 txog 24 × 10⁻⁶/ K) ntawm aluminium alloys:

· Qhov Diameter:Txheem drilling yields ISO IT9 rau IT10. Ntxiv cov carbide reaming lossis precision boring dhau tas li ua tiav ISO H7 (+0.012/−0.000 mm rau Tsawg dua lossis sib npaug li 18 mm inch).

· Lub ntsej muag Flatness:Siab - nrawm nrawm- txiav siv PCD wiper inserts ua tiav 0.020 mm flatness tshaj 300 mm ncua, muab roughing thiab tiav cov hlais tau muab faib los tswj cov clamping so.

· Nto Roughness:Nrog cov khoom siv nruj thiab siab -siab coolant,cam khwb cia aluminium nto tiavmus txogRa0.4-0.8 µmntawm milled ntsej muag thiabRa 0.2 µmnyob rau hauv zoo-cov ntawv xov xwm tsis txaus siab.

Machining Allowance thiab Tolerance Capability Matrix

Txiav Tool Xaiv thiab Coolant Delivery Protocols rau Cast Aluminium CNC Machining

Kev khiav hauj lwm ntawm qhov siab txiav ceev yam tsis muaj thermal distortion los yog cov cuab yeej gumming yuav tsum tau xaiv cov cuab yeej substrate thiab xa dej.

1. Cov cuab yeej siv lub tswv yim

· Polycrystalline Pob Zeb Diamond (PCD):Cov cuab yeej PCD yog qhov yuav tsum tau ua rau qhov nruab nrab tsis tu ncua - mus rau - ntim siabA380 tuag casting machining. Lub siab hardness ntawm pob zeb diamond (5000-8000 HV) resists puas los ntawm 9.5% silicon matrix. PCD lub ntsej muag mills tuaj yeem ua haujlwm ntawm kev txiav ceev (V_c) mus txog 3000 m / min nrog ntug lub neej tshaj 50,000 qhov chaw.

· Pob zeb diamond-Zoo li Carbon (DLC) Coated Carbide:Rau kev khiav luv luv thiab 5-axis 3D contouring ntawm A356-T6 qhov twg PCD geometry raug txwv, DLC-coated micrograin carbide kawg mills muab qhov sib txhuam coefficient ultra-low (μ<0.1), preventing chip adhesion and edge buildup.

· Uncoated Micrograin Carbide:Haum rau cov qauv thiab qis- silicon cam khwb cia alloys thaum av nrog ultra- ntse, polished rake ntsej muag (R_z<0.05 µm) and positive shear geometry (15^∘rau 20^∘radial rake).

2. Milling Kinematics

Ib txwm ua haujlwmnce milling (down milling). Pa milling yuam cov cuab yeej txiav ntug los txhuam los ntawm kev ua haujlwm- tawv, oxide- nplua nuj casting nto ntawm xoom nti tuab ua ntej txiav pib, ua rau flank hnav sai. Climb milling nkag mus rau qhov txiav ntawm qhov siab tshaj plaws nti thickness, shearing huv si nyob rau hauv lub casting nto thiab directing cua sov rau hauv lub nti es tsis yog ib feem.

3. Coolant Chemistry thiab Siab Parameters

· Hom emulsion:Siv ib nrab - hluavtaws los yog tag nrho cov kua hluavtaws nrog siab ester lubricity additives tsim tshwj xeeb rau cov tsis yog -ferrous alloys.

· Concentration:Khaws qhov concentration nruj me ntsis ntawm8.0% thiab 10.0%. Concentrations qis dua 6% ua rau chip vuam, xov tsis zoo, thiab kais tawg; concentrations siab tshaj 12% ua rau cov kua foaming thiab staining ntawm raw cam khwb cia.

· pH tswj:Khaws cov dej txias pH hauv8.5 rau 9.2. A pH saum toj no 9.4 ua rau cov tshuaj oxidation (dub grey staining) ntawm raw cov ntaub ntawv txhuas.

· Los ntawm -Spindle Coolant (TSC):Drilling ua haujlwm ntawm cam khwb cia txhuas yuav tsum tau siab -siab los ntawm- spindle coolant (Ntau tshaj los yog sib npaug li 20 mus rau 40 bar) kom yuam cov chips tsis tu ncua tawm ntawm cov kab noj hniav sib sib zog nqus, tiv thaiv chip recutting thiab localized tool qaug dab peg.

Tus nqi -Kev txiav txim siab Volume Framework: Thaum twg hloov pauv ntawm Billet CNC mus rau Cast + CNC

Pab pawg neeg yuav khoom yuav tsum ntsuas qhov twg chav tsev tus nqi crossover point nyob thaum piv tag nrho CNC hog- tawm ntawm 6061-T6 billet tiv thaiv qhib lub pwm casting thiab ua tiav theem nrabcam khwb cia aluminium CNC xov.

Cov Tsav Tsheb Tseem Ceeb

1. Tus nqi siv khoom siv (Yuav- rau-Fly Ratio):Yog tias cov khoom tiav tiav hnyav 1.2 kg tab sis xav tau 6.0 kg khoom siv rau lub tshuab (80% cov khoom poob raws li swarf), kev siv cov khoom siv thib ob txo qis siv cov khoom siv raw rau 1.5 kg, xa cov khoom siv raw khoom tam sim.

2. Lub Sijhawm Machining:Milling ib lub vaj huam sib luag hauv hluav taws xob los ntawm cov khoom siv hluav taws xob yuav xav tau 45 feeb ntawm lub tshuab 4-axis. Machining tsuas yog cov ntsiab lus mounting ua haujlwm thiab sealing ntsej muag ntawm qhov tuag casting yuav siv sijhawm 4.5 feeb, tso lub tshuab muaj peev xwm kaum npaug.

3. Tooling Amortization (NRE):Tuag casting pwm raug nqi ntawm $8,000 thiab $45,000 nyob ntawm cavitation thiab complexity. Cov pwm tas mus li raug nqi $4,000 txog $15,000.

Tus nqi thiab lub sij hawm ua piv txwv nyob rau hauv ntau lawm khiav

Lub Dazao Ib Leeg -Source Advantage

Thaum muab casting los ntawm ib tus neeg muag khoom thiab CNC machining los ntawm lwm tus, kev tsis sib haum xeeb zoo yuav tshwm sim: lub khw muag khoom liam tias cov khoom tawg rau cov cuab yeej tawg thiab xau, thaum cov foundries liam lub tshuab khw rau kev txhoj puab heev thiab datum misalignment.

Xiamen Dazao Machinery tswj ob qho tib si hauv pem teb thiab cov precision CNC machining Rhiav nyob rau hauv ib lub ru tsev. Peb cov neeg tsim pwm ua haujlwm ncaj qha nrog peb cov pab pawg CNC programming los ua kom cov kab sib faib, cov khoom nkag, cov ntaub qhwv, thiab cov pas txias txias nrog cov nqes qis 5-axis toolpaths, lav tag nrho qhov ntev thiab kev nruj nruj.

Sourcing Checklist thiab PAA Engineering FAQs

Kev Muag Khoom & DFM Engineering Checklist

Ua ntej tso cov xaj xaj rau machining cam khwb cia txhuas qhov chaw, xyuas cov duab kos thiab cov lus qhia tshwj xeeb:

 Casting Alloy & Temper Confirmed:Qhia meej meej txog qib alloy (xws li, A356-T6, A380, ADC12) thiab kev kho cua sov ntawm cov ntawv luam tawm.

 Casting vs Machining Datums txhais:Paub meej tias cov ntsiab lus ntawm lub hom phiaj (A, B, C) yog nyob rau ntawm tib lub pwm sab, zam txoj kab sib cais.

 Machining Tshuag ciam teb qhia:Teem cov khoom tso nyiaj rau 0.5-0.8 hli rau HPDC lossis 1.5-2.0 hli rau pwm mus tas li.

 Kev Ntsuas Siab & Kev Pom Zoo Pom Zoo txwv:Txhais kev lees paub rau ASTM E505 siv xov tooj cua; qhia helium lossis huab cua-hauv qab- dej ntsuas siab (piv txwv li, 3.5 bar nrog Tsawg dua lossis sib npaug rau 0.5 sccm tus nqi xau).

 Surface Finish (Ra) Callouts:Txhais Ra qhov tseem ceeb cais rau raws li -ntaus nto (feem ntau Ra 3.2–6.3 µm) thiab CNC machined nto (Ra 0.4–1.6 µm).

 Ncej -Machining Surface Finishing:Txheeb xyuas qhov yuav tsum tau ua kom pom tseeb / dub anodizing (yuav tsum tau qis-silicon alloys zoo li A356 rau xim zoo ib yam), chromate hloov pauv (MIL-DTL-5541), lossis hmoov txheej.