HR 500 CAST NEW! Solid carbide high-performance reamer for an optimal surface finish. Made by Guhring. universal for GG and GGG as a standard tool

Transcription

1 CAST Solid carbide high-performance reamer for an optimal surface finish NEW! universal for GG and GGG as a standard tool Made by Guhring

2 Cast the specialist for an optimal surface finish R 500 CAST Guhring further develops its successful reamer range: The high-performance reamers are now available with Signum-coating as standard. It now enables the machining of GG and GGG with only one tool. The new Signum-coating excels thanks to extreme hardness and good coating adhesion. These are optimal prerequisites for the application in grey cast iron and spheroidal graphite iron. With this optimisation of the range the machining of GG and GGG is possible with only one tool. For our customers this means easier handling, less tools and subsequently lower costs. In addition, the Signum-coated Cast reamer achieves better surface qualities and a longer tool life. Signum-coating extreme hardness of 5500 HV outstanding coating adhesion for maximum process reliability for the machining of all cast materials high temperature resistance 2

3 Cast the specialist for an optimal surface finish Guhring no. R Standard/DIN Tool material Surface finish Form Cooling Guhring Std. Solid carbide Signum HR500 Cast S axial Signum HR500 Cast D axial Feed column no. Reamer-Ø mm f (mm/rev.) < > Material related coolants: air neat oil soluble oil Cutting direction: R right-hand Material group Material examples, new description (old description in brackets) Figures in bold material no. to DIN EN Cast iron EN-GJL-100 (GG10), EN-GJL-200 (GG20) EN-GJL-250 (GG25), EN-GJL-350 (GG35) Spheroid. graphite iron and EN-GJS (GGG40), EN-GJS (GGG50), malleable cast iron EN-GJS (GGG60), EN-GJS (GGG70), New cast materials GGV EN-GJV400 (GGV40), EN-GJV500 (GGV50), SiMo 6 New cast materials ADI EN-GJS (ADI1200), EN-GJS (ADI1400) HB 350 HB 240 HB 350 HB 300 HB Tensile str. Hardness MPa (N/mm 2 ) Coolant v c m/min Feed column no A surface finish quality of R a 1.6 in GG and R a 1.2 in GGG is not a problem with the Signum-coated Cast reamer. However, prerequisite is at least an average casting quality with homogeneous cavity distribution (µm) -2.0 P-profile aligned Lc/Ls = OFF Probe TKU300 Lt = 4.80 mm Vt = 0.50 mm/s Lr = mm (µm) -2.0 P-profile aligned Lc/Ls = OFF Probe TKU300 Lt = 4.80 mm Vt = 0.50 mm/s Lr = mm Cluster of large cavities l-----l Magnification = 100 x High voltage = kv Detektor = SE1 100 µm Working distance = 15 mm Guhring R&D Homogeneous casting structure with an even cavity distribution: CAST achieves a surface finish quality of Ra 0.46 following a tool life of approximately 60 m l-----l Magnification = 100 x High voltage = kv Detektor = SE1 100 µm Working distance = 16 mm Guhring R&D Extreme cavity sizes and distribution: With this structure a decrease in surface finish quality must be taken into account. 3

4 universal for the Cast the specialist for an optimal surface finish machining of GG and GGG Solid carbide Cast high-performance reamers The Cast reamer produces surface finish qualities that were previously not possible with multi-fluted reamers. With a homogenous casting quality a surface finish < Ra 1.6 in GG is achievable without a problem. Naturally, with the usual high cutting rates. Diameter fluctuations are a thing of the past, process reliability and a reduction in process costs are guaranteed. A surface finish quality < Ra 1.2 is also no problem in GGG thanks to the Signum-coating. Tool material Solid carbide Solid carbide Surface finish Signum Signum Discount group Guhring no Type Standard Tolerance Guhring std. H7 S for blind holes D for through holes d2 d1 l 4 l 2 l 1 Nom.-Ø d 1 Shank Ø d 2 h6 Total length l 1 Effective length l 2 Flute length l 4 No. of flutes Availability 4

5 Cast the specialist for an optimal surface finish GG and GGG machining with only one tool Application examples GG-30 brake housing Ø mm H7 Surface finish requirement R a = 0.8 v c = 200 m/min f u = 1.2 mm/rev. Tool life: 48 m GGG-50 transmission housing Ø mm Surface finish requirement R z = 10 v c = 195 m/min f u = 1.1 mm/rev. Tool life: 66 m The customer also machines GG-25 with the same tool and achieves optimal machining results. 5

6 Gühring KG Post Box D Albstadt Herderstr D Albstadt Telephone Made by Guhring / 1453-VIII-06 Printed in Germany 2014