Machining Stainless Steel 316l Ceev, Pub, thiab Cov Cuab Yeej Xaiv Qhia

#	Txoj cai
1	Siv TiAlN-coated carbide (K10–K20 qib). Nws kav 150-200% ntev dua li cov cuab yeej tsis muaj txheej txheem ntawm 316L.
2	Khiav ntawm 200-300 SFM rau carbide tig. Kev mus sai ua rau ua sai sai - nce ntug (BUE); mus qeeb ua rau ua hauj lwm hardening.
3	Tsis txhob cia lub cuab yeej nyob los yog rub . 316L ua haujlwm- hardens tam sim ntawd thaum lub cuab yeej nres. Khaws cov khoom noj tsis tu ncua.
4	Siv dej txias txias - ib txwm. Qhuav machining 316L txo cov cuab yeej lub neej los ntawm 50-70%. Siv cov roj sulfurized rau tapping.
5	Siv lub kaum sab xis zoo (+5℃rau +15℃). Tsis zoo los yog xoom rake tsav cov cua kub ntau dhau mus rau hauv qhov chaw ua haujlwm thiab ua rau tawv tawv.

Kev ua haujlwm	Cov cuab yeej nyiam	Ceev (SFM)	Pub	Coolant
OD Tig - Rough	Carbide K20 TiAlN	200–280	0.015–0.025 in/rev	Dej nyab
OD Tig - Ua tiav	Carbide K10 TiAlN	280–350	0.005–0.010 in/rev	Dej nyab
Lub ntsej muag Milling	Carbide 45℃mus kom ze	200–300	0.004–0.008 in/tooth	Dej nyab
Xaus Milling	2-fl Carbide TiAlN	150–250	0.002–0.004 in/tooth	Dej nyab/HPC
Drilling	HSS-Co 135℃sib cais-point	30–50	0.005–0.010 in/rev	Dej nyab + peck
Tapping	HSS-Co M42 kauv flute	15–25	Pitch feed	Sulfurized roj
Reaming	Carbide	100–150	0.008–0.015 in/rev	Dej nyab
tho txawv	Carbide TiAlN	250–320	0.005–0.010 in/rev	Dej nyab

Tau qhov twg los: Muab tso ua ke los ntawm Sandvik Coromant Technical Guide (2024), Kennametal Machining Data Handbook (2023), thiab ASM Phau Ntawv Vol. 16: Machining (ASM International). Tag nrho cov txiaj ntsig tau pib - cov lus pom zoo; txheeb xyuas nrog koj tus neeg muab khoom siv.

Nkag siab txog dab tsi ua rau 316L nyuaj rau tshuab yog thawj kauj ruam rau kev ua tiav nws. Qhov sib txawv tseem ceeb nyob hauv nws cov chemistry alloy thiab yuav ua li cas chemistry cuam tshuam nrog cov cuab yeej txiav.

Machining Stainless Steel 316l

Alloy	Cov pa roj carbon (max)	Mo Cov ntsiab lus	Machinability Index *	Ua Haujlwm Hardening	Key Siv Case	Distinguishing Feature
SIB 304	0.08%	Tsis muaj	45%	Nruab nrab	General fabrication	Baseline austenitic qib
30 4l swv	0.03%	Tsis muaj	42%	Nruab nrab	Welded sib dhos	Tsawg carbon → tsis muaj ncej-weld rhiab heev
316 SIB	0.08%	2.0–3.0%	40%	Siab	Marine / tshuaj	Mo rau pitting kuj
316L SS AW	0.03%	2.0–3.0%	36–40%	Siab	Pharma / zaub mov / marine	Tsawg C + Mo; nyuaj tshaj rau tshuab ntawm 300-series
316 H S	0.04–0.10%	2.0–3.0%	38%	Siab	Siab -temp service	Siab C rau creep kuj
3 17l swv	0.03%	3.0–4.0%	32–36%	Siab	Cov tshuaj phem heev	Siab Mo dua 316L; txawm ntau xav tau tshuab

*Machinability Index: raws li AISI B1112 dawb-machining steel=100%. Qhov chaw: ASM International Handbook Vol. 16 (1989); Machinery's Handbook, 31st Edition (Industrial Press, 2020).

316L's machinability Performance index ntawm 36-40% txhais tau tias nws yuav tsum tau kwv yees li 2.5 × ntau txiav quab yuam tshaj li dawb-machining carbon steel. Nws cov ntsiab lus Mo nce kev ua haujlwm- kev sib zog ua kom tawv nqaij - qhov # 1 kev sib tw hauv 316L machining.

Peb lub cev muaj zog ntawm316l hlauua ke los tsim nws cov kev sib tw machining tsis zoo:

Khoom 1: Ua haujlwm siab-Hardening Rate

316L ua hauj lwm- hardens sai dua yuav luag txhua yam engineering alloy. Thaum cov cuab yeej txiav rub tawm rau saum npoo - txawm tias ib feem ntawm ib qho thib ob - txheej txheej saum npoo hloov mus rau theem nyuaj. Cov txheej txheem hardened no sai sai dulls lub tom ntej dhau ntawm lub cuab yeej.

Kev Tiv Thaiv: Ua kom tsis tu ncua txiav, cov cuab yeej ntse, cov khoom noj kom txaus, thiab txaus txiav qhov tob kom nyob qis dua qhov chaw ua haujlwm - thaj tsam tawv.

Khoom 2: Tsawg Thermal Conductivity

Ntawm 13.4 W / m·K, 316L hloov cov cua sov tawm ntawm qhov chaw txiav 17% tsawg dua 304 SS (16.2 W / m·K). Qhov no txhais tau tias muaj cua sov ntau ntxiv ntawm lub cuab yeej thaum lub sij hawm txiav, softening lub cuab tam binder thiab accelerating hnav.

Kev Tiv Thaiv: Dej nyab lub coolant qhia meej meej ntawm lub cuab yeej -workpiece interface. High -pressure coolant (HPC) ntawm 70–1000 psi yog qhov tshwj xeeb tshaj yog rau kev txiav tob.

Khoom 3: High Ductility thiab Stickiness

316L's austenitic microstructure ua rau nws muaj zog heev (40-50% elongation). Chips zoo li ntev, stringy, thiab nplaum - lawv ua raws li cov cuab yeej ntug, tsim ua - nce ntug (BUE). BUE ua rau lub ntsej muag tsis zoo, qhov tsis zoo, thiab tsis ua haujlwm tam sim ntawd.

Kev Tiv Thaiv: Siv TiAlN-coated carbide (tsawg txhuam kev sib txhuam), zoo rake inserts, thiab tswj kev txiav ceev tshaj qhov pib BUE (feem ntau> 150 SFM rau carbide).

Kev xaiv cuab yeej yog ib qho kev txiav txim siab tshaj plaws hauv 316L machining. Cov cuab yeej zoo kav ntev 4 × ntev dua, ua kom zoo dua qhov tiav, thiab txo cov nqi seem.

Tool Material Comparison - Daim Ntawv Qhia Tag Nrho

Khoom siv	Qib ISO	Daim ntawv thov zoo tshaj plaws rau 316L	Kwv Tij Lub Neej	Tus nqi txheeb ze	Daim ntawv pom zoo
HSS M2	-	Tsawg- ntim tig/drilling	25-30% (tus nqi qis)	Tsawg	Tsis muaj; TiN yeem
HSS-Co M42	-	Drilling, tapping	40–50%	Low-Med	TiCN txhim kho kev ua haujlwm
Uncoated WC/Co	K10, K20	General tig / milling	100% (reference)	Nruab nrab	Yam tsawg kawg siv tau; hloov nrog coated
TiAlN{0}}coated Carbide	KC522M	Txhua yam kev ua haujlwm (xav tau)	150–200%	Med-High	★ Pom zoo rau 316L
AlTiN-coated Carbide	-	High - ceev qhuav txiav	180–220%	Siab	Qhov zoo tshaj plaws rau siab -milling ceev
TiCN{0}}coated Carbide	-	Tiav/semi-finish	140–180%	Med-High	Kev sib txhuam qis, ua tiav zoo
Cermet	P10–P25	Kev ua kom zoo nkaus xwb	120–150%	Siab	Tsis yog rau hnyav roughing
CBN	-	Tsis pom zoo rau 316L	Unpredictable	Siab heev	CBN tuaj yeem ua rau ntug chipping ntawm austenitic SS
Ceramic	-	Tsis pom zoo	pluag	Siab	Thermal shock ua rau tsis ua hauj lwm ntawm 316L

Qhov chaw: Kennametal Machining Data Phau Ntawv (2023 ed.); Sandvik Coromant Tig & Milling Qib Selector (2024); Iscar Machining Navigator (2023). Cov feem pua ntawm cov cuab yeej lub neej yog txheeb ze rau uncoated WC / Co carbide nyob rau hauv cov xwm txheej zoo ib yam.

TiAlN-coated carbide yog cov lus pom zoo rau 316L. Nws muab qhov zoo tshaj plaws ua ke ntawm kub hardness, oxidation tsis kam, thiab tsis tshua muaj kev sib txhuam - raws nraim qhov siab - tshav kub, siab - adhesion ib puag ncig ntawm 316L machining xav tau.

TiAlN (Titanium Aluminium Nitride) txheej ua tau zoo TiN (Titanium Nitride) ntawm 316L rau ob qho laj thawj:

Kub Hardness: TiAlN tuav hardness mus txog 800℃(vs . 600℃rau TiN). Txij li thaum 316L ua kom muaj cua sov ntau dua ntawm thaj chaw txiav, TiAlN nyob twj ywm nyuaj qhov twg TiN yuav muag.

Oxidation Resistance: The aluminum component forms a dense Al₂O₃ layer at high temperatures, acting as a thermal barrier between the cutting heat and the cobalt binder.

AlTiN (rov qab muaj pes tsawg leeg) muaj qhov ua tau zoo dua qhov kub thiab txias dua thiab yog qhov kev xaiv sab saum toj rau siab - nrawm milling saum 300 SFM.

Tool Geometry - Tus Geometry Koj Xaiv Txiav Txim Seb 316L Ua Haujlwm-Hardens

Geometric Parameter	Pom zoo tus nqi	Cov nyhuv ntawm 316L Machining	Yuav ua li cas yog tsis ncaj ncees lawm
Lub kaum ntse ntse (axial / radial)	+5℃rau +15℃(zoo)	Txo txiav quab yuam; txiav kom huv si	Tsis zoo rake → kub ntau dhau → ua hauj lwm hardening
Clearance Angle	10-12 ° C	Tiv thaiv cov cuab yeej rub ntawm workpiece	me me heev: kev sib txhuam buildup; loj heev: ntug tsis muaj zog
Nose Radius (tig)	0.031 "- 0.047" (R0.8-1.2 hli)	Txhim kho lub ntsis; txhim kho tiav	Loj heev → chatter; me me dhau → ceev ntug hnav
Lub kaum ntse ntse (milling)	0.015 "-0.031" (R0.4-0.8 hli)	Balances tiav thiab cov cuab yeej durability	Lub kaum ntse ntse chips; lub vojvoog loj ua rau muaj kev vibration
End Mill Flute suav	2-3 lub hlis	Zoo dua nti khiav tawm; tsawg cua sov	4+ flutes → nti packing → BUE → twj tsis ua hauj lwm
Helix Angle (kawg zeb)	30℃-45 degree	Txiav du; txo axial quab yuam	Tsawg helix → pluag nti ntws; siab helix → deflection
Drill Point Angle	135℃(plit point)	Txo thrust; tus kheej -qhov chaw	118℃(tus qauv) → ntau dhau thrust → ua hauj lwm hardening
Ntug Kev Npaj	Honed/T-land T01015	Txhim kho ntug rau kev cuam tshuam kev txiav	Raw ntse ntug chips sai sai ntawm 316L
Sab Txiav Ntug Lub kaum sab xis	15℃(tig)	Distributes load; txo qhov tsis xis nyob	0℃→ concentrated load → ceev nrooj hnav

Qhov chaw: Sandvik Coromant Technical Training Manual: Stainless Hlau Machining (2024); Walter AG Daim Ntawv Qhia Daim Ntawv Thov - Austenitic Stainless Steels (2023); SECO Tools Technical Handbook (2022).

Lub kaum sab xis rake zoo tsis yog -negotiable rau 316L. Ib qho tsis zoo -rake insert tsim 30-40% ntau txiav quab yuam thiab 20-25% ntau cua sov - ob qho tib si uas ncaj qha ua rau ua hauj lwm hardening. Txhua qhov ntxig siv rau ntawm 316L yuav tsum muaj tsawg kawg yog +5℃rake.

Txiav ceev yog qhov parameter feem ntau machinists tau yuam kev ntawm 316L. Ceev dhau: BUE thiab thermal tsis ua haujlwm. qeeb dhau: ua hauj lwm hardening thiab rubbing. Qhov tseeb ntau yog nqaim dua li carbon steel.

Cutting Speeds for 316L

Ua kom tiav Kev Txiav Ceev Reference Table

Kev ua haujlwm	Khoom siv	Ceev (SFM)	Ceev (m / min)	Qhov tob ntawm Txiav	Sau ntawv
Tig-Roughing	Carbide K20 (tsis muaj coated)	200–280	61–85	0.100–0.250"	Dej nyab qhov tseem ceeb
Tig – Semi-tiav	Carbide K15 (TiAlN)	250–320	76–98	0.050–0.100"	Positive rake insert
Tig - Tiav	Carbide K10 (TiAlN)	280–350	85–107	0.020–0.060"	Ra <63 μin ua tiav
Tig	HSS M2 / M42	45–65	14–20	0.050–0.150"	Tsuas yog rau qis- ntim ua haujlwm
Lub ntsej muag Milling	Carbide (45℃txhuas lub kaum ntse ntse)	200–300	61–91	0.040–0.100"	Nce toj zeb nyiam
Xaus Milling (2-flute)	Carbide (TiAlN)	150–250	46–76	0.025–0.100"	Txo mus rau 80% ntawm kev tig ceev
Drilling < 1/2 "	HSS-Co M42	30–50	9–15	Tag nrho qhov tob	135℃sib cais- taw tes xyaum
Drilling < 1/2 "	Khoom Carbide	80–120	24–37	Tag nrho qhov tob	Peck xyaum txhua 1 × D
Tapping	HSS M42 (kab laug sab flute)	15–25	5–8	N/A	Ncaj sulfurized roj; 65-75% xov
Reaming	Carbide	100–150	30–46	0.005–0.015"	Lub teeb Tshuag tshem tawm nkaus xwb
Xov Milling	Carbide	200–280	61–85	N/A	Zoo dua tapping rau tawv alloys
tho txawv	Carbide (TiAlN)	250–320	76–98	0.020–0.060"	Rigid teeb tseem ceeb

Tau qhov twg los: Machining Data Handbook, 3rd Ed. (Metcut Research Associates, 1980); Sandvik Coromant Technical Guide (2024); Kennametal Machining Data Phau Ntawv (2023). SFM=Surface Feet per Minute. 1 SFM=0.00508 m/s. Hloov ua RPM: N=(SFM × 3.82) / D (nti).

"Zoo ruaj ntseg" rau carbide tig ntawm 316L yog 200-350 SFM. Hauv qab 200 SFM, kev ua haujlwm nyuaj yuav nce ntxiv. Tshaj 350 SFM, TiAlN txheej txheej nrawm nrawm. Rau cov cuab yeej HSS, thaj chaw nyab xeeb yog 45–65 SFM - qeeb qeeb tab sis tseem siv tau rau qis{11}} ntim ua haujlwm.

Formula (Imperial)	Formula (Metric)
RPM=(SFM × 3.82) ÷ Diameter (inch) Piv txwv: 250 SFM ntawm 2" txoj kab uas hla bar RPM=(250 × 3.82) ÷ 2=478 RPM	RPM=(Vc × 1000) ÷ (π × D mm) Piv txwv: 76 m/min ntawm 50mm inch RPM=(76,000) ÷ (157)=484 RPM

Nco ntsoov: Ib txwm pib ntawm 80% ntawm kev pom zoo nrawm rau thawj zaug dhau thiab kho raws li pom cov xim nti thiab cov cuab yeej hnav.

Chip Xim	Chip Shape	Nws txhais li cas	Kev ua
Nyiaj / lub teeb straw	Luv luv, comma-zoo li tus	Zoo tagnrho - ceev ceev thiab coolant	Khaws cov kev ntsuas tam sim no
Tsaus straw / xiav -liab	Nyias ribbons	Kub me ntsis - ciam teb tau txais	Ua kom cov dej txias ntws los yog txo qis 10%
Tsaus xiav / dub	Ntev hlua	Kub dhau - txheej txheej yuav tshwm sim	Txo ceev 20%; ntxiv coolant
Nyiaj, ntev hlua	Nruam ribbon	Ceev tsawg dhau - BUE pheej hmoo	nce ceev 15-20%; check lub kaum sab xis
Hmoov / discolored	Fragmented	Ua hauj lwm hardening tam sim no	Tshawb nrhiav chaw nyob; hloov npub ntxig ntxig; nce pub

Tau qhov twg los: Machinery's Handbook, 31st Edition (Industrial Press, 2020); Kev Siv Lub Tshuab Ua Haujlwm (SME, 2019).

Pub tus nqi hauv 316L yog ob qho -edged parameter. Lub teeb dhau, thiab lub cuab yeej rubs tsis tau txiav - ua rau kev ua haujlwm nyuaj. hnyav dhau lawm, thiab nto tiav degrades hauv qab specification. Qhov tsawg kawg nkaus chipload txoj cai yog qhov tseem ceeb.

Ua kom tiav Feed Rate Reference Table

Kev ua haujlwm	Khoom siv	Pub tus nqi	Target Surface Finish	Kev txiav txim siab tseem ceeb
Tig Roughing	Carbide	0.015–0.025 in/rev	N8-N9 (250-500 μin Ra)	Max MRR; coolant ntawm txiav ntug
Tig ib nrab- tiav	Carbide	0.010–0.015 in/rev	N7-N8 (125-250 μin Ra)	Sib npaug tag thiab cuab yeej lub neej
Tig tiav	Carbide	0.005–0.010 in/rev	N6-N7 (63-125 μin Ra)	Tsawg pub + ntse ntug yuav tsum tau
Lub ntsej muag Milling	Carbide	0.004–0.008 in/tooth	N7-N8 (125-250 μin Ra)	Wiper insert tuaj yeem ua tiav N6
Xaus Milling	Carbide	0.002–0.004 in/tooth	N7-N8 (125-250 μin Ra)	Txo rau 50–60% axial- qhov tob dhau
Drilling < 1/4 "	HSS-Co	0.003–0.006 in/rev	-	Peck txhua 0.5 × D
Drilling 1/4 "- 1/2"	HSS-Co	0.005–0.010 in/rev	-	Peck txhua 1 × D; sulfurized roj
Drilling (Carbide)	Carbide	0.005–0.008 in/rev	-	Siab dua vs HSS; tswj peck
Reaming	Carbide	0.008–0.015 in/rev	N5-N6 (32-63 μin Ra)	Siv 0.010 "undersize xyaum
Tapping	HSS M42	Sib npaug rau xov suab	-	Sulfurized txiav roj yuav tsum tau

Cov peev txheej: ASM Phau Ntawv Qhia Vol. 16: Machining (ASM International, 1989); Sandvik Coromant Ceev & Pub Tshuab xam zauv Methodology (2024); Kennametal NOVO™ Machining Parameters Database (2023). Nto tiav Ra qhov tseem ceeb ntawm ISO 1302.

Txoj cai chipload yam tsawg kawg nkaus - yuav tsum tsis txhob qis dua qhov tsawg kawg nkaus pom zoo pub - yog qhov tseem ceeb rau 316L dua li lwm cov qib stainless hlau. Kev pub mis maj mam ua rau rub tawm, ua haujlwm nyuaj, thiab cov cuab yeej tsis ua haujlwm sai. Nws yog qhov zoo dua los ua kom qhov tob ntawm kev txiav me ntsis dua li txo qis qis qis qis qis.

Hauv cov qauv steel, txo tus nqi pub tsuas yog qeeb ntau lawm. Hauv 316L, txo cov khoom noj hauv qab no yam tsawg kawg nkaus:

Txiav ntug los rub ntau dua li shear cov khoom.

Frictional heat to spike at the tool -workpiece interface.

Cov txheej txheej saum npoo ua haujlwm- tawv hauv milliseconds.

Lub hardened txheej los ua ib qho abrasive rau tom ntej dhau, accelerating flank hnav.

Txoj cai ntawm tus ntiv tes xoo: yog tias koj tuaj yeem hnov cov cuab yeej "singing" (siab- suab nrov) yam tsis muaj cov nti tsim tawm, koj cov khoom noj yog lub teeb dhau. Nce nws tam sim ntawd.

Kev xaiv Coolant tsis yog qhov kev txiav txim siab thib ob rau 316L - nws yog qhov tseem ceeb. Txoj cai txiav kua yuav ua tau ob npaug rau lub neej; kev xaiv tsis ncaj ncees lawm (tshwj xeeb yog qhuav machining) accelerates tsis ua hauj lwm dramatically.

Sulfurized Cutting Oil Reduces Tool Wear by Up to 40 vs Dry Machining

Daim Ntawv Qhia Txog Kev Txiav Dej

Hom kua dej	Dilution Ratio	Rating (1–5★)	Zoo tshaj rau	Sau ntawv
Ncaj Sulfurized Roj	Undiluted	★★★★★	Tapping, threading, reaming	Qhov zoo tshaj plaws lubrication; Yuav tsum tau tapping 316L
Chlorinated Txiav Roj	Undiluted	★★★★★	Hnyav tig, xov txiav	EP lubrication zoo; tshawb xyuas ib puag ncig cov cai
Soluble roj emulsion	10:1–7:1	★★★★	General tig & milling	pH 8.5-9.5; tshuaj xyuas cov kab mob loj hlob txhua lub lim tiam
Semi-synthetic Coolant	15:1–10:1	★★★★	General machining	Sib npaug ntawm lubrication thiab txias
Synthetic Coolant	20:1–15:1	★★★	High - ntim CNC ua haujlwm	Ua kom txias zoo; lubrication qis dua roj -raws li
Siab -Pressure Coolant (HPC)	70-1000 psi	★★★★★	Sib sib zog nqus drilling, hnyav milling	Chip tawg + txias; Txhim kho lub neej ntawm cov cuab yeej 30-50%
Los ntawm -Tool Coolant	Raws li saum toj no	★★★★★	Qhov tob- qhov drilling	Qhov tseem ceeb rau qhov> 3 × txoj kab uas hla hauv 316L
Qhuav Machining	N/A	★	Tsis pom zoo rau 316L	Ua hauj lwm hardening ceev ceev tsis muaj coolant
Mist / Yam tsawg kawg nkaus (MQL)	50-500 ml / teev	★★★	Lub teeb milling / tiav nkaus xwb	Tsis haum rau kev txiav hnyav lossis qhov tob tob

Cov peev txheej: Txiav Tool Engineering Magazine, "Coolants for Stainless Steel" (2023); SECO Cov Cuab Yeej Daim Ntawv Thov: Stainless Hlau (2022); SME Fundamentals of Modern Manufacturing, 6th Ed. (2018).

Siv dej txias txias rau txhua qhov haujlwm, qhia meej meej ntawm thaj chaw txiav - tsis yog dej nyab thaj chaw. Rau tapping, ncaj sulfurized roj yog yuav tsum tau; tsis muaj lwm yam kev txiav cov kua ua kom txaus ciam ciam ntawm lub kais dej -workpiece interface hauv 316L.

Siab -Hloov Coolant (HPC) rau kev sib sib zog nqus Drilling thiab Heavy Milling

High-pressure coolant (70–1000 psi) muab peb qhov zoo dua li cov qauv dej nyab hauv 316L:

Chip tawg: Lub siab - lub dav hlau siab tawg ua rau cov hlua khi ntev, tiv thaiv cov nti ntim rau hauv qhov sib sib zog nqus los yog cov mills.
Txhim kho cua txias: Lub dav hlau ncaj nraim ntawm thaj chaw txiav yog 3–5 × zoo dua dej nyab-tsuas yog txias ntawm 316L qhov siab txiav qhov kub.
Extended tool life: HPC can increase tool life by 30–50% in deep drilling applications (>3 × laum txoj kab uas hla).
Rau los ntawm- cov cuab yeej coolant hauv drilling thiab tho txawv: siv 500-1000 psi rau qhov tob tshaj 5 × txoj kab uas hla hauv 316L. Qhov no tsis yog xaiv tau rau qhov precision qhov - nws tiv thaiv kev ua haujlwm hardening nyob rau hauv qab ntawm lub qhov.

Tig yog qhov kev ua haujlwm tshaj plaws ntawm 316L round bar Tshuag. Qhov kev pheej hmoo tseem ceeb yog kev sib tham thiab ua - nce ntug ntawm kev cuam tshuam.

Kev teeb tsa: Siv CNMG lossis DNMG-style zoo-rake inserts nrog TiAlN txheej. Lub qhov ntswg vojvoog R0.8 rau kev ua tiav, R1.2 rau roughing.

Roughing: Ceev 200–280 SFM, pub 0.015–0.025 in/rev, DOC 0.100–0.250” Tso cai rau cov ntxig txiav hauv qab ib qho kev ua haujlwm- tawv txheej txheej.

Tiav: Ceev 280–350 SFM, pub 0.005–0.010 in/rev, DOC 0.020–0.060” Qhov kawg pass yuav tsum yog ib qho kev txiav tsis tu ncua - tsis muaj tsev nyob.

ID tho txawv: Siv rigidly txhawb nqa tho txawv tuav. Qhov siab tshaj plaws 4: 1 (L: D). Ceev tib yam li OD tig; txo los ntawm 20% kom ncav cuag ntev.

Parting: Siv carbide parting hniav nrog dej nyab coolant. Pub 0.002–0.004 in/rev. Tsis txhob cia cov hniav rub rov qab.

Milling 316L - Lub ntsej muag, Qhov, thiab Profile

Nce milling (down milling) yog tus qauv rau 316L. Hauv kev nce milling, cov nti pib tuab thiab nyias thaum nws tawm - txo cov cua sov ntawm qhov txiav. Nyob rau hauv cov pa milling, cov nti pib nyias, ua rau ntau rubbing thiab kub thaum nkag.

Lub ntsej muag Milling: Siv 45℃mus kom ze lub kaum sab xis nrog cov ntxig zoo. Ceev 200-300 SFM, pub 0.004-0.008 hauv / hniav. Dav ntawm txiav 70-80% ntawm cutter txoj kab uas hla.

Xaus Milling: 2-flute carbide (TiAlN), helix 35-45 degree. Ceev 150-250 SFM, pub 0.002-0.004 hauv / hniav. Axial DOC max 1.5 × txoj kab uas hla; radial DOC 50%.

Qhov Milling: Txo ceev 30%; siv 2-flute nrog los ntawm cov cuab yeej coolant los yog dej nyab HPC. Peck nyob rau hauv 0.5 × txoj kab uas hla qhov tob increments.

Siab -Pib Milling (HFM): Siv tau rau 316L thaum siv<15° lead angle inserts. Feed per tooth can reach 0.012–0.020 in/tooth because the thin chip redirects force axially rather than radially.

Drilling 316L - Tsis txhob ua hauj lwm nyuaj hauv qab ntawm qhov xyaum

Drilling yog qhov tseem ceeb tshaj plaws hauv 316L. Yog hais tias lub laum nres txiav thiab pib rub - ib ntus txawm tias ib ntus - hauv qab ntawm lub qhov ua haujlwm- hardens mus rau ze ntawm -ceramic nto uas tawg cov tho tom ntej.

Drill xaiv: 135℃phua-point, HSS-Co M42 lossis cov khoom carbide. Zam kev xyaum ua 118℃- lawv xav tau 30% ntxiv dag zog thiab txhawb kev ua haujlwm nyuaj ntawm kev ua tiav.

Ceev: HSS-Co 30–50 SFM; Carbide 80-120 SFM. Tsis txhob txo qis dua qhov tsawg kawg nkaus - qis qis ua rau muaj kev pheej hmoo nyob.

Pub: 0.005–0.010 in/rev rau qhov < 1/2". Tsis txhob tes- pub drilling 316L - siv CNC los yog fais fab mov.

Peck Drilling: Peck txhua 1 × laum txoj kab uas hla rau qhov> 3 × D. Tag nrho retract (G83) es tsis yog ib feem peck (G73) rau qhov zoo tshaj plaws nti clearance.

Coolant: Dej nyab yam tsawg kawg nkaus; los ntawm - cuab yeej coolant rau qhov > 5 × txoj kab uas hla. Sulfurized roj rau qhov diameters <1/4".

Ua ntej-drilling: Rau qhov > 3/4", pilot laum ntawm 50% kawg txoj kab uas hla ua ntej kom txo tau thrust ntawm tag nrho -size xyaum.

Tapping 316L - Cov roj Sulfurized yog yuav tsum tau

Tapping yog qhov kev ua haujlwm uas ntau dua 316L qhov chaw raug khawb dua li lwm yam. Kev sib xyaw ua ke ntawm tus kais dej zawv zawg qhov kev txiav txim thiab 316L's stickiness tsim kev sib txhuam siab heev ntawm cov xov flanks.

Coj mus rhaub Xaiv: HSS-Co M42 kauv-flute (phom-qhov ntswg) kais. Kauv lub raj nplaim pov cov chips nce thiab tawm ntawm lub qhov - qhov tseem ceeb rau 316L qhov muag tsis pom. Tsis txhob siv ncaj nraim -flute kais hauv qhov muag qhov muag.

Kev Sib Txuas Xov Tooj: Siv 65-75% xov qhov siab kom txo torque . 100% xov qhov siab nyob rau hauv 316L yuav tsum tau 40% torque ntau dua li carbon steel thiab nquag strips kais.

Ceev: 15–25 SFM siab tshaj plaws siab dua speeds tawg kais.

Txiav Fluid: Ncaj sulfurized txiav roj - tsis coolant emulsion. Thov ncaj qha mus rau tus kais dej ua ntej nkag mus thiab nruab nrab ntawm lub voj voog pecking.

Tapping nrog CNC: Siv lub voj voog nruj tapping (synchronous tapping) nrog lub nro / compression kais tuav kom them nyiaj rau lub sijhawm sib txawv ntawm lub tshuab.

Lwm txoj hauv kev: Xov milling (saib Tshooj 3.1 lub rooj) tau pom zoo rau qhov tseem ceeb lossis qhov siab - tus nqi, raws li nws tshem tawm qhov kev pheej hmoo ntawm kais tawg hauv qhov chaw ua haujlwm.

Teeb meem	Keeb kwm	Kho tam sim	Kev tiv thaiv
Ua hauj lwm hardening (glazed nto)	Lub tsev / rubbing / dull tool	Hloov cov ntxig; nce pub	Tsis txhob cia lub cuab yeej nyob; siv ntse zoo-rake inserts
Ua -Up Edge (BUE)	Tsawg ceev + siab kub + nplaum alloy	Nce txiav ceev 15-20%	Siv TiAlN-coated carbide; ntxiv txiav roj
Sib tham / vibration	Ntev overhang los yog lub teeb tob	Txo overhang; nce DOC	Max L: D piv 4: 1 rau tig; 3: 1 rau boring
Rapid Flank Hnav	Ceev dhau / qib tsis raug	Txo ceev 20%; upgrade rau TiAlN	Siv qib K10/K20; thov txiav cov roj
Ntxig hnav ntawm qhov tob - ntawm - Txiav Kab	Ua haujlwm- txheej txheej tawv		Siv 15℃sab txiav ntug kaum; chamfer pub-in
Ntoj tsis zoo	Hnav ntxig / tsis ncaj ncees lawm qhov ntswg vojvoog	Hloov cov ntxig; nce r	Finishing insert R0.8-1.2 hli; kawg dhau ntawm qhov pub tsawg
Laum taug kev / Tswb-lub qhov ncauj	Flexible laum / tsis txaus rigidity	Siv qhov chaw xyaum ua ntej; txo ceev	Rigid stub-length xyaum; 135℃split point
Torn nto (tapping)	Tsis yog roj / ceev heev	Hloov mus rau cov roj sulfurized; qeeb	HSS-Co spiral flute tap; 65-75% xov txuas
Chip Packing (milling)	Muaj ntau lub flutes / tsis txaus coolant	Hloov mus rau 2-flute; ntxiv coolant	Nce toj zeb; tswj chip load; siv HPC yog tias muaj

Qhov chaw: Manufacturing Engineering & Technology, 7th Ed. (Kalpakjian & Schmid, 2014); CNC Machining Phau Ntawv (Industrial Press, 2010); Daim Ntawv Qhia Tswv Yim rau Stainless Hlau Machining (Outokumpu, 2022).

Q1: Dab tsi yog qhov zoo tshaj plaws txiav ceev rau machining stainless hlau 316L?

Rau cov cuab yeej carbide, qhov zoo tshaj plaws txiav ceev rau 316L stainless hlau yog 200-350 SFM (61-107 m / min) nyob ntawm kev ua haujlwm. Tig tiav khiav ntawm qhov kawg (280-350 SFM), thaum roughing siv 200-280 SFM. HSS cov cuab yeej yuav tsum raug txwv rau 45–65 SFM. Tshaj qhov ntau yam no ua rau kev ua haujlwm nyuaj thiab txo cov cuab yeej lub neej.

Q2: Vim li cas 316L nyuaj rau tshuab dua 304 stainless hlau?

316L muaj qhov ntsuas qhov ua tau zoo ntawm 36–40% vs. 45% rau 304. Cov 2.0–3.0% molybdenum cov ntsiab lus hauv 316L nce nws cov haujlwm- hardening npaum li cas thiab ua rau nws stickier ntawm cheeb tsam txiav. Nws cov thermal conductivity qis dua (13.4 W/m·K vs. 16.2 W/m·K rau 304) txhais tau tias muaj cua sov ntau dua ntawm cov cuab yeej, ua kom hnav.

Q3: Dab tsi ntawm cov cuab yeej txiav yog qhov zoo tshaj plaws rau 316L stainless hlau?

TiAlN-coated carbide hauv qib K10–K20 yog qhov zoo tshaj plaws txhua yam- nyob ib ncig ntawm kev xaiv rau machining 316L. Nws muaj 150-200% lub neej ntev dua piv rau uncoated carbide. Rau tapping thiab threading, HSS-Co M42 nrog sulfurized txiav roj yog nyiam. CBN thiab ceramics tsis pom zoo rau 316L vim chipping thiab thermal shock tsis ua hauj lwm.

Q4: Dab tsi yog qhov ua haujlwm nyuaj hauv 316L, thiab kuv yuav tiv thaiv nws li cas?

Kev ua hauj lwm hardening tshwm sim thaum qhov saum npoo ntawm 316L ua nyuaj vim txiav cov cua sov thiab cov tshuab deformation. Nws tsim ib txheej glazed uas dulls cov cuab yeej sai. Kev Tiv Thaiv: (1) Siv lub kaum sab xis zoo (+5℃rau +15℃); (2) Tsis txhob cia lub cuab yeej nyob; (3) Tswj kev txiav tsis tu ncua; (4) Khaws cov cuab yeej ntse; (5) Siv cov dej txias kom txaus.

Q5: Kuv yuav siv li cas rau 316L stainless hlau?

Rau kev tig thiab milling, siv cov roj emulsion soluble ntawm 7: 1 txog 10: 1 dilution nrog dej nyab daim ntawv thov. Rau tapping thiab threading, ncaj sulfurized txiav roj yog yuav tsum tau - nws yog tib cov kua uas muab txaus ciam lubrication ntawm lub txiav ntug. Qhuav machining 316L yog qhov tsis txaus siab vim nws ua rau kev ua haujlwm hnyav.

Q6: Kuv yuav ua li cas xyaum 316L stainless hlau yam tsis ua hauj lwm hardening?

Siv 135℃sib cais- taw tes xyaum (HSS-Co M42 lossis cov khoom carbide), txiav ceev 30–50 SFM rau HSS lossis 80–120 SFM rau carbide, pub 0.005–0.010 in/rev, nrog dej nyab thiab peck drilling txhua 1 × drill. Tsis txhob cia lub laum rub tsis tau txiav. Siv sulfurized txiav roj rau qhov me me txoj kab uas hla <1/4".

Q7: Kuv puas yuav tsum siv nce milling lossis cov pa milling rau 316L?

Nce milling (down milling) yog qhov zoo dua rau 316L. Nws txo cov tsim- nce ntug (BUE) tsim, txuas lub neej ntawm lub cuab yeej los ntawm 20–30%, thiab ua kom lub ntsej muag zoo dua. Pa milling tsuas yog siv thaum backlash hauv lub tshuab ua rau nce milling impractical. Xyuas kom lub milling tshuab rooj muaj qhov cuam tshuam tsawg kawg ua ntej thov nce milling.

Q8: Kuv yuav siv dab tsi pub rau milling 316L stainless hlau?

Rau lub ntsej muag milling nrog carbide, siv 0.004-0.008 hauv / hniav (chipload). Rau qhov kawg milling, txo rau 0.002-0.004 hauv / hniav. Txoj cai tseem ceeb: tsis txhob txo qis qis qis dua qhov tsawg kawg nkaus - lub teeb ci dhau lawm ua rau lub cuab yeej rub es tsis txhob txiav, ua rau ua haujlwm nyuaj. Ua kom muaj kev sib koom ua ke tag nrho thiab sib npaug chipload.

Q9: Kuv puas tuaj yeem tshuab 316L qhuav, tsis muaj cua txias?

Qhuav machining ntawm 316L tsis pom zoo. Yog tsis muaj coolant, cua sov ua sai sai ntawm qhov chaw txiav, txhawb kev ua hauj lwm hardening, ua -up edge (BUE), thiab ceev flank hnav. Cov cuab yeej lub neej tuaj yeem raug txo los ntawm 50–70% piv rau dej nyab-cooled machining. Yog tias tsis muaj dej txias, qhov tsawg kawg nkaus - lubrication ntau npaum li cas (MQL) nrog cov roj siab -lubricity yog qhov tsawg kawg nkaus qhov kev xaiv.

Q10: Dab tsi yog qhov machinability Performance index ntawm 316L stainless hlau?

Lub machinability Performance index ntawm 316L stainless hlau yog 36-40% ntawm AISI / ASTM nplai qhov twg dawb -machining steel B1112=100%. Qhov no txhais tau tias 316L yog kwv yees li 2.5 × nyuaj rau tshuab dua li cov hlau. Rau kev sib piv, 304 SS=45%, 316 SS=40%, 316L SS=36-40%, thiab dawb-machining 303 SS=78%.

Q11: Dab tsi ntxig geometry yog pom zoo rau tig 316L?

Siv qhov zoo -rake inserts nrog lub kaum ntse ntse +5℃rau +15 degree, qhov ntswg vojvoog 0.031"–0.047" (R0.8–1.2 mm), thiab T- av lossis honed ntug npaj (T01015). Tsis txhob nruab nrab lossis tsis zoo rake inserts raws li lawv ua kom muaj cua sov ntau dhau. ISO chipbreaker designation: A-hom lossis M- hom geometry rau 316L stainless.

Q12: 316L piv rau 316 li cas ntawm machinability?

316L thiab tus qauv 316 muaj ze li ntawm machinability (36–40% vs. 40%), tab sis 316L cov ntsiab lus qis dua (max 0.03% vs. max 0.08%) ua rau nws me ntsis nplaum ntawm thaj tsam txiav vim muaj ntau cov carbides dawb. Hauv kev xyaum, tib qhov kev txiav tsis siv rau ob qib. Qhov sib txawv ntawm machining yog me me piv rau cov vuam thiab corrosion ua haujlwm zoo ntawm 316L.

Hais txog JN Alloys

JN Alloys yog cov chaw tsim khoom thiab cov chaw muag khoom tshwj xeeb hauv cov khoom siv stainless hlau thiab npib tsib xee alloy xws li 316L, Hastelloy, Inconel, Incoloy, Duplex, Super Duplex, thiab 17- qib 4PH. Peb cov ntsiab lus technical yog sau los pab engineers thiab machinists tau txais txiaj ntsig zoo tshaj plaws los ntawm kev ua haujlwm siab alloys.