THREADING TOOLS FOR AEROSPACE MATERIALS

Transcription

1 aero THRDING TLS FR RSPC MTRILS N-ID-0116

2 RSPC PPLICTIN RNG ircraft materials Tool manufacturers are often confronted with tricky challenges when working for the viation industry: The machining of hard to work materials like ferritic / martensitic steels, nickel alloys, titanium and other special alloyed materials demand highly sophisticated solutions. Titanium lloys luminium lloys Composites Glass Fibre reinforced plastics Super lloys RSPC THRD NRMS IS 3161 with radius The IS 3161 norm indicates the general requirements for connecting elements in the erospace industry and differs from the conventional thread norm by a controlled root radius. The thread flank angle remains identical, however the bottom of the thread shows a distinct radius. Threading tools as per IS 3161 are marked with a J (for example UNJ for UN threads). IS 3161 without radius Thread indications labeled with a J in brackets (for example UN(J) for UN threads) mean that the threading tools will be without radius on the outside diameter. These cutting tools are suitable for UNJ, UNJC, UNJF threads as per IS 3161, when a radius on the thread bottom is not specifically required. DC Swiss offers a wide range of standard tools for MJ, UNC(J), UNJF, UNF(J) and G threads in the requested 4H, 3B or 6Hmod tolerances (IS 5855 / 3161 / IS DIN 8140). 1

3 RSPC THRDING TLS Multiple ptions Threading depth, material, lubricant and customer s expectations of the final result influence the choice of the adequate cutting tool. The use of a thread-cutting tap can be limited by the working depth. n interesting alternative is offered by high performance thread milling cutters and / or thread whirl cutters which can perform, even in highly alloyed materials, threads up to 4xD in complete process security. THRD CUTTING THRD MILLING THRD WHIRLING 22 ustenitic stainless steels LN L Ti Ferritic and martensitic Ferritic and martensitic < 850 N/mm 2 > < 1150 N/mm B XM12 (15-5PH) C (17-4PH) Pure titanium Gr Gr Gr Gr.4 Titanium alloys 42 Nickel alloys lloy 230 F Gr Nickel alloys 2 < 850 N/mm 2 > < 1150 N/mm K N N N05500 (B865) N07080 (B637) N07718 (B637) 53 Nickel alloys 3 > N/mm N07080 (B637) N07718 (B637) l alloyed l alloyed 74 Si < 1.5% Si > 1.5% - < 10% THRDING TCHNLGY l alloyed Si > 10% Mg-alloys Glass fibre reinforced plastics Glass fibre reinforced, Thermo and Duroplastics 2

4 PPLICTIN CHRT THRD TPPING 1. Choose Material 16 High tensile alloy steels 22 ustenitic stainless steels 53 Nickel alloys 3 > N/mm 2 2. Check Lubricant ptimal with cutting oil ptimal with emulsion ptimal with air Suitable with cutting oil Suitable with emulsion Suitable with air 3. Choose type of hole Through hole Blind hole Through and blind hole Material groups Material designation Hardness (HB) Tensile strength Rm (N/mm 2 ) longation (%) Steels Stainless Steels Cast Iron Titanium Nickel Copper luminium Magnesium Plastic Compounds 11 Free-cutting steels < 200 < 700 < Structural / cementation steels < 200 < 700 < Carbon steels < 300 < 1000 < lloy steels <850 N/mm 2 < 250 < 850 < lloy steels hard. / temp. >850 - <1150 N/mm 2 > 250 > 850 < High tensile alloy steels <44 HRC > 250 > 850 < 12 * High tensile alloy steels HRC > 560 > 2000 < Free machining stainless steels < 250 < 850 < ustenitic stainless steels < 250 < 850 > Ferritic and martensitic <850 N/mm 2 < 250 < 850 > Ferritic and martens. >850 - <1150 N/mm 2 > 250 > 850 > Cast iron < 250 < 850 < Spheroidal graphite + malleable cast iron < 250 < 850 > Pure titanium < 250 < 850 > Titanium alloys > 250 > 850 < Nickel alloys 1 <850 N/mm 2 < 250 < 850 > Nickel alloys 2 >850 - <1150 N/mm 2 > 250 > 850 < Nickel alloys 3 > N/mm 2 > 340 > 1150 < Pure copper (electrolitic copper) < 120 < 400 > Short chip brass, phosphor bronze, gun metal < 200 < 700 < Long chip brass < 200 < 700 > l unalloyed < 100 < 350 > l alloyed Si < 1.5 % < 150 < 500 > l alloyed Si > 1.5 % - < 10 % < 120 < 400 < l alloyed Si > 10 %, Mg-lloys < 120 < 400 < Thermoplastics Duroplastics Glass fibre reinforced plastics

5 N Normal materials N. 20 N. 60 W Soft materials W. 20DL W. 60DL Z Tough materials Z. 20VS Z. 70VS H. 20TC H. 50TC S S. 20VS S. 60VS TL Special alloys S. 20 S. 50 Titanium alloys S. 90 TL. 20VS TL. 51VS S Special alloys H High tensile materials THRDING TCHNLGY 4

6 PPLICTIN CHRT THRD MILLING GF 1. GW Choose Threading Depth 1.5 x D1 2 x D1 Steels Stainless Steels Cast Iron Titanium Nickel Copper luminium Magnesium Plastic Compounds 2.5 x D1 4 x D1 GF6110VS Material groups 5 GFH GFM GF6165VS GFH6110VS GFM6260VS GW3016VS GW3019VS Material designation 1.5 x D1 2 x D1 1.5 x D1 2.5 x D1 4 x D1 11 Free-cutting steels 12 Structural / cementation steels 13 Carbon steels 14 lloy steels <850 N/mm 2 15 lloy steels hard. / temp. >850 - <1150 N/mm 16 High tensile alloy steels <55 HRC * High tensile alloy steels HRC 21 Free machining stainless steels 22 ustenitic stainless steels 23 Ferritic and martensitic <850 N/mm 2 24 Ferritic and martens. >850 - <1150 N/mm 2 31 Cast iron 32 Spheroidal graphite + malleable cast iron 41 Pure titanium 42 Titanium alloys 51 Nickel alloys 1 <850 N/mm 2 52 Nickel alloys 2 >850 - <1150 N/mm 2 53 Nickel alloys 3 > N/mm 2 61 Pure copper (electrolitic copper) 62 Short chip brass, phosphor bronze, gun metal 63 Long chip brass 71 l unalloyed 72 l alloyed Si < 1.5 % 73 l alloyed Si > 1.5 % - < 10 % 74 l alloyed Si > 10 %, Mg-lloys 81 Thermoplastics 82 Duroplastics 83 Glass fibre reinforced plastics 2

7 DVNTGS RH LH The same cutter can be used for right and left hand threads. For threads to be cut near to the bottom of blind holes. M8 6H M8 7G Required tolerance adjustable as per users choice. For threads with interrupted cut or with oblique entrance or exit. Vc F 4xD 1 The cutting speed and feed rate can be matched individually to each work-piece material. Ideal for deep blind holes (GW). HRC 63 M18x1 M24x1 To realise threads in hardened materials (GFH). ne only tool for threads of a wide range of diameters with the same pitch (GFM). THRDING TCHNLGY 6

8 Solutions for demanding applications: DC Swiss Threading Tool program for viation and erospace Industry DC SWISS S CH-2735 Malleray Tel Fax mail: info@dcswiss.ch DC SWISS UK Ltd 9 rgreave Road UK- Sheffield S13 9LQ Tel Fax mail: info@dcswiss.co.uk