IRD series Iljin Resin & Vitrified bond Diamond ILJIN DIAMOND Co., Ltd.

IRD - series Application Physical Properties Available Mesh Size 30wt% Nickel Coating IRD-II Application Tungsten Carbide, WC/Steel, Ceramic Grinding PCBN, PCD, WC Tool Grinding Granite Tile Grinding Resin Bond Wheel Vitrified Bond Wheel Physical Properties Bare Diamond Density : 3.52g/cc 30wt% Nickel Coated Density : 4.22g/cc 56wt% Nickel Coated Density : 5.20g/cc Available Mesh Size From 80/100 to 400/500 IRD-III 56wt% Nickel Coating IRD-F

Toughness Index Comparison of toughness TI value Mesh Size Mesh size 140/170 230/270 325/400 IRD-F 20.0 30.0 43.0 PDA-211 22.0 27.0 25.8 RVG-810 23.4 28.8 42.3 PDA-321 27.4 32.0 34.8 IRDⅡ 37.0 41.0 48.0 RVG 40.0 43.8 50.0 IRDⅢ 47.0 53.0 TI value Mesh Size

Crystal Shape Poly vs Single crystal IRD-F IRD-II IRD-III IRD-H IRD-F (140/170mesh) Poly Crystal 5% 52% IRD-III IRD-H 73% 90% 95% 27% 48% 10% IRD-F IRD Ⅱ IRD Ⅲ IRD-H

Morphology (IRD-F) IRD-F RVG-810 PDA-211

Applicazioni Tenace WC+ Steel IRD-H WC + PCD IRD-III Durezza IRD-II CSG PDA-446 WC + PCD PDA-433 IRD-III RVG Durezza IRD-II SPR PDA-321 RVG-800 PDA-311 WC, PCD/PCBN Friabile PDA-211 IRD-F RVG-810 Cermets, Ceramics Poly Single Forma

Coated IRD Products Nickel coatings Item N NS New coating Element Ni Cu, Ag.. Morphology Cluster Spiky Metal Weight % 30, 56, 60 56 50 Available mesh size 80/100 ~ 400/500 Nickel coatings Products Metal wt % Density (g/cc) IRD-II, III, F, H - 3.52 IRD-II N30 Nickel 30 % 4.22 IRD-III N30 IRD-II N56 Nickel 56 % 5.20 IRD-III N56 IRD-FN IRD-HN Net (ct) Gross (ct) 1,000 1,429 2,273

N coating & NS coating N NS Cluster type Spiky type IRD II N56 IRD II NS56 IRD II NS56 NS

Available size US MESH FEPA IRD Ⅱ IRD III IRD-F IRD-H BARE N30 N56 N 80/100 D181 ◎ 100/120 D151 120/140 D126 140/170 D107 170/200 D91 200/230 D76 230/270 D64 270/325 D54 325/400 D46 400/500 D40

Case Study

Tungsten Carbide Grinding Area Korea Industry Part Name Operation Surface Grinding Workpiece Material P20E (Tool Grade, HRc 76~78, WC 2㎛) 51WC-8(2TaC-1NbC)-32(7WC-3TiC)-9Co Wheel Specific Resin (Phenol) 1A1, Φ150mm, Concentration 100 Diamond & cBN 170/200 Process Parameters Wheel Vs : 1,696m/min (28.3m/s) Table speed : 14m/min Depth of cut : 0.025mm Feed rate : 80m/min Results Remark 100% 95% 98% 111% 104% 51% 50% 43% 31% IRD II-N56 IRD III-N56 RVG-W IRV-NP PDA-311NX G-ratio Power Performance

Tungsten Carbide Die Grinding Area Korea Industry Part Name Die Operation Cylindrical Grinding Workpiece Material WC + 13%Co, Φ320mm Wheel Specific Resin (Polyimide) 1A1, Φ305mm Diamond & cBN IRD-III N56 140/170 Process Parameters Wheel Vs : 1,500m/min Workpiece Vs : 30~38m/min Depth of cut : 0.07mm Feed rate : 40m/min Results Remark 143% 113% 101% 100% G-ratio Removal Rate Power IRD-II N56 IRD-III N56

Tungsten Carbide Die Grinding Area Korea Industry Part Name Die Operation Cylindrical Grinding Workpiece Material WC + 13%Co, Φ320mm Wheel Specific Resin (Phenol) 1A1, Φ305mm Diamond & cBN IRD-III N56 140/170 Process Parameters Wheel Vs : 1,724m/min Workpiece Vs : 32.2m/min Depth of cut : 0.05mm Feed rate : 80m/min Results Remark 100% 111% 78% IRD II-N56 RVG-W G-ratio Power Performance

The amount of accumulated material removal (cm Customer Test Result 2 4 6 8 10 12 20 30 40 50 60 70 80 IRD III-N56 PDA-321 N55 RVG-W Grinding Force (N) The amount of accumulated material removal (cm 3 ) Area Japan Industry Part Name Operation Traverse Grinding Workpiece Material Tungsten Carbide (K-20) Wheel Specific Resin (Phenol) 175D – 3X – 6T – 50.8H Diamond & cBN IRD-III 230/270 Process Parameters Wheel Speed Vs : 1,540m/min Depth a : 0.020mm Table Speed F : 10m/min Results Remark

Grinding Speed (sec/ea) PCD Insert Grinding Area Korea Industry Part Name PCD Insert Operation Tool Grinding Workpiece Material PCD (coarse Grade) Wheel Specific Vitrified Diamond & cBN IRD-II, IRD-III 400/500 Process Parameters Wheel Speed= 1,800rpm Depth a= 1.5mm/min Table Speed F=N/A Results IRD-III : Long tool life IRD-II : High grinding speed & low chipping Remark 31 25 22 30 15 20 19 18 STD IRD-II IRD-III Wheel Wear (um/ea) Grinding Speed (sec/ea) Chipping (um)

Customer Performance Test Area Japan Industry Part Name Operation Plunge Grinding Workpiece Material Tungsten Carbide Wheel Specific Resin (Phenol) 175D – 3X – 6T Diamond & cBN IRD-FN 230/270 vs. RVG890 Process Parameters Wheel Vs = 1,540m/min Depth a=0.02mm/path Table Speed F=10m/min Results Remark 5 10 15 30 40 50 60 70 Grinding Force (N) IRD-FN RVG 890 Volume Removed (cm 3 ) 200 150 Grinding Ratio 100 50 IRD-FN RVG-890

Customer Performance Test Area Japan Industry Part Name Tungsten Carbide Operation Machine : Okamoto PSG52DX Vertical Workpiece Material Tungsten Carbide (K20) 120*100*4mm Wheel Specific Resin Φ150-8U-Φ50.8H, SDC140N100BS40 Diamond & cBN IRD-III N56 140/170 * Competitor : PDA311N55 Process Parameters Wheel Vs = 1600m/min Depth a=0.02mm/path Traverse speed F=15m/min Coolant = Chemical solution 5% Results 연삭저항 : 정상상태에서 IRD-III가 기존품(standard) 대비 10% 높다. 휠마모 : 연삭비로 IRD-III가 50% 높다 표면조도 : IRD-III가 25% 작다 가공후 지립관찰 IRD-III의 파쇄 지립이 적다 Remark

A<B<C<…<J Cermet Grinding (Cu Coating) Area Japan Industry Cutting Tool Part Name Cermet Insert Operation Tool Grinding AP-50 (WAIDA MFG Co., Ltd) Workpiece Material High Toughness Cermet (TNMA331) Wheel Specific Resin Bond Cup Wheel Type Diamond & cBN IRD-C50 Process Parameters Wheel Vs = 1500m/min Traverse Speed : 10mm/min Results 10개의 Tip 가공. #1~#10 가공 시, 연삭력이 저하되면서 Δ(d0-d)가 증가함. 기존 Cu 코팅 사용 Wheel은 Δ가 지속적으로 증가하지만, 당사 Cu 코팅 사용시 Δ가 거의 없이, 일정한 연삭력 유지 Remark #1: d=A #2: d+ Δ(d2-d)=B #3: d+ Δ(d3-d2)=C … #10: d+ Δ(d10-d9)=J A<B<C<…<J A≒B≒C≒ … ≒J Δd 52 100 144 Competitive IRD-C50 97 치수변화 Wheel Wear Grinding Power Competitor IRD-C50