PM Cutting Data Recommendations - bucorp.com

1 1 TREATMENT OF TOOL datarecommendations for P/M tool steels2 This information is based on our present state of knowledge and isintended to provide general notes on our products and their uses. It shouldnot therefore be construed as a warranty of specific properties of theproducts described or a warranty for fitness for a particular Data Recommendationsfor P/M Tool SteelsMaterial characteristics and propertiesThe Uddeholm Powder Metallurgy (P/M) tool steels, VANADIS 4, VANADIS 6, VANA-DIS 10 and ELMAX and high speed steels, VANADIS 23, VANADIS 30 and VANADIS 60are all high carbon, high alloyed steels. They are designed to give a high performancewhen it comes to abrasive or adhesive wear, chipping, galling, cracking, corrosion orplastic deformation.

2 As they all contain a large amount of small and hard carbides theygive increased tool wear in Cutting operations compared to lower alloyed, convention-ally melted Cutting toolsTo prevent a heavy tool wear, we recommend the use of carbide- and HSS-tools with awear resistant coating. Carbide inserts with a thick Al2O3-coating intended for cast ironmachining often gives a good tool life when machining in P/M-tool steels. This is validboth for turning and milling operations. When finishing turning with small feed rateand depth of cut, mixed ceramic inserts can be an alternative for long tool dataDue to the large amount of hard and abrasive carbides in the P/M-steels, a high feedrate but a modest Cutting speed is recommended.

3 A high feed rate will give a shortersliding distance between work material and the tool. A modest Cutting speed will keepthe temperature down in the Cutting HSS-tools, depending on operation we recommend TiN-, TiCN- or Cutting data Recommendations are valid for Uddeholm Powder Metallurgical tool steels and highspeed steels: ELMAX, VANADIS 4, VANADIS 6, VANADIS 10, VANADIS 23, VANADIS 30 and VANADIS 60. In casethe value varies depending on tool steel grade, the steel grade and its value is data are always dependent on the actual operation, the machine tool and the Cutting tool used. The followingcutting data are general guidelines that may have to be adjusted to the actual conditions of a specific machining carbideHighRoughingFinishingspeed steelCutting speed (vc), 390390 46030 45 VANADIS 4330 490490 65540 49 VANADIS 6230 330330 39026 30 VANADIS 10165 260260 33016 26 VANADIS 23360 525525 69040 49 VANADIS 30260 360360 46030 49 VANADIS 60195 295295 36020 32 Feed (f), < < of cut (ap), < < insert gradesC2, C6C3, C7 Coated CCCoated CCRemarks Cutting fluid is recom-mended.

4 For turning with inter-rupted cut or face turningof large workpieces usea tougher cementedcarbide speed (vc), 360360 460 VANADIS 4295 390390 490 VANADIS 6165 230230 330 VANADIS 10 98 165165 230 VANADIS 23360 425425 525 VANADIS 30195 260260 360 VANADIS 60130 195195 260 Feed (fz), of cut (ap), insert gradesC2, C6C3, C7 Coated CCCoated CCFace milling with cemented carbideRemarks Use a milling cutter witha positive negative orpositive positive geo-metry. Climb milling shouldgenerally be used. Milling should generallybe done without a high surface finish isrequired coolant may beused. Cermets can bebeneficial to usewhen finishing understable shoulder milling withcemented x x D1 x DCutting speed (vc), 425295 390260 360 VANADIS 4360 460330 425295 390 VANADIS 6195 260160 230130 195 VANADIS 10160 230130 195100 160 VANADIS 23330 490295 390260 360 VANADIS 30230 295195 260160 230 VANADIS 60195 260160 230130 195 Feed (fz), insert gradesC2, C6 Coated CCRemarks Climb milling shouldgenerally be used.

5 Choose the cutter dia-meter (D) and the radialdepth of cut (ae) so thatat least two cuttingedges are engagedsimultaneously. If the machine tool poweris inadequate, for thedata given, reduce thedepth of cut but do notreduce the side milling, the same Cutting speed as slot milling can be used. The feeds must be adjusted in order toobtain a suitable average chip factor for side millingDivide the cutter diameter (D) with the radial depth of cut (ae). See in the chart below which correction factor(Cf) this corresponds to, and multiply the chosen feed (in the table for slot milling) with this :Tool: Indexable carbide insertCutter diameter: D = inRadial depth of cut: ae = inD/ae = =20 Feed according to tableslot milling = in/toothCorrection factor accordingto chart: Cf = for side milling.

6 Fz = x = in/tooth Cutter diameter (inch)1/8 3/163/16 3/83/8 3/43/4 13/1613/16 19/16 Uncoated HSS 1 4) Cutting speed (vc)16 26 (fz) in/tooth 4 VANADIS 616 26 23 Feed (fz) in/tooth HSS 1 4) Cutting speed (vc)46 53 (fz) in/tooth 446 59 23 Feed (fz) in/tooth 639 53 30 Feed (fz) in/tooth 1032 46 60 Feed (fz) in/tooth carbide 5 8) Cutting speed (vc)160 195 (fz) in/tooth 4130 160 23 Feed (fz) in/tooth 6115 145 30 Feed (fz) in/tooth 10100 130 60 Feed (fz) in/tooth carbide insert 6 7) Cutting speed (vc)ELMAX260 360 4 Feed (fz) 160 10 Feed (fz) 360 23 Feed (fz) 6230 295 30 Feed (fz) 195 60 Feed (fz) gradesC3,C6 Coated CCapaeDSLOT MILLINGR emarks (slot and side milling)1)Climb milling is generally )Use a cutter with chipbreaker whenside milling with radial depths of cut,ae > x )When side milling (HSS) with smallradial depths of cut the Cutting speedcan be increased by up to 15%.

7 4)Use liberal amounts of Cutting )It is recommended to use a TiCNcoated cutter when milling with solidcemented carbide )When side milling with small radialdepths of cut the Cutting speed canbe increased by up to 30%.7)The radial run-out, at the cuttingedges, must be small and not MILLING0 10 20 3040 50 Cutter diameter/Radial depth of cut, D/aeCorrection factor Cf 54321 End milling6 DrillingRemarks1)The Cutting fluid should be ample anddirected at the )When drilling with short NC-drills the feed may be increased by up to20%. For extra long drills the feedmust be )TiCN-coating is recommended whendrilling with coated )Use insert grades in the range ofISO C6 C5.

8 Under unstable condi-tions a tougher carbide grade shouldbe used for the centre )Use a high Cutting fluid pressure andflow rate for a good chip )If machining with solid or brazedcemented carbide drills, a rigid set-upand stable working conditions )The use of drills with internal coolingchannels is )Use a Cutting fluid concentration of15 20%.Tapping with HSSELMAXVANADIS 6 VANADIS 30 Cutting speed (vc) = 16 23 4 VANADIS 23 Cutting speed (vc) = 26 32 10 VANADIS 60 Cutting speed (vc) = 13 20 Threading compound or Cutting oil isrecommended. A TiN coated forming tap (non- Cutting ) is recommended. Drill diameter (inch)1/8 3/163/16 3/83/8 3/43/4 13/1613/16 19/16 Uncoated HSS 1 2) Cutting speed (vc)32 39 (f) 432 39 23 Feed (f) 6 26 32 30 Feed (f) 1020 26 60 Feed (f) HSS 1 3) Cutting speed (vc) 59 66 (f) 452 59 23 Feed (f) 646 52 30 Feed (f) 1039 46 60 Feed (f) carbide insert 4 5) Cutting speed (vc)ELMAX 295 390 6 Feed (f) 4 330 425 30 Feed (f) 230 295 10 Feed (f)

9 390 490 23 Feed (f) 260 330 60 Feed (f) carbide 6 8)ELMAX Cutting speed (vc)VANADIS 4 195 260 23 Feed (f) 6 160 230 30 Feed (f) 10 130 195 60 Feed (f) carbide 6 8) Cutting speed (vc) 100 115 (f) 4 100 130 23 Feed (f) 6 82 115 30 Feed (f) 10 66 100 60 Feed (f) ofP/M tool steelFor the majority of grinding operations of P/M toolsteels and high speed steels, boron nitride wheelsare the best choice for such steels.

10 Where boronnitride wheels cannot be used, the type of grindingwheel must be carefully crystalline aluminum oxide wheels, such asNorton SG, give good results if the grinding set upis rigid. Grinding wheels with a lower content offine crystalline aluminum oxide, such as Norton SGBand SlipNaxos 420A, are also grindingSurfaceCylindricalInternalProfil egradeConditionCenterlessstraight wheelgrinding segmentgrindinggrindinggrindingVANADIS 4 Soft33A 60 LVM1)43A 46 HVZ1)43A 36 FVZ1)62A 60 KVX1)77A 60 K9 VX1)42A 100 IVZ1)VANADIS 6annealed 89A 60 2 K5A V2172)45 A 462 I8 VP2)PACR 30 H2)89A 60 2 K5A V2172)89A 60 2 J6 V1112)45A 605 D14 V982)VANADIS 10 SGB 60 L8 VH3)32AA 46 IVTR3)53A 30 F12 VBEP3)3 SGP 60 KVS(VH)3)32A 54 LVBE3)32A 80 KVBE3)VANADIS 2351A 601 L5V MRAA4)WA 46 HV4)WA 24 GV4)48A 46 LV4)WA 46 JV4)WA 100 LV4)