Grinding and polishing tools - joke Technology GmbH - #8

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95 2 Tel. +49 (0) 22 04 / 8 39-0 • Fax +49 (0) 22 04 / 8 39-61 • info@joke.de 2. Grinding and polishing tools Sample plate Sample plate There is currently no standardisation for polishing jobs. This is why we, in cooperation with the polishing professionals at Aro-Tec (www.aro-tec.de) in Kierspe, have developped a sample plate, which illustrates the 30 steps to high-gloss finish. The plate provides information on the roughness and gloss level for each production step. Grinding stroke finish Grinding and polishing stone High-gloss polishing Step Roughness Step Roughness Step Roughness 1 80 grinding stroke Gloss level: 17.20 % Ra R3z Rt Ry Rz 1.27 5.40 12.30 10.10 8.60 11 100 stone with hand-filing machine Gloss level: 12.50 % Ra R3z Rt Ry Rz 0.65 3.20 6.00 5.60 4.80 20 Very hard brush 25 µ Gloss level: 53.40 % Ra R3z Rt Ry Rz 0.25 0.80 1.60 1.60 1.60 2 120 grinding stroke Gloss level: 21.20 % Ra R3z Rt Ry Rz 0.70 3.20 7.10 7.00 5.70 12 220 stone with hand-filing machine Gloss level: 12.90 % Ra R3z Rt Ry Rz 0.71 3.70 6.00 5.90 5.40 21 Hard brush 15 µ Gloss level: 40.30 % Ra R3z Rt Ry Rz 0.22 0.70 1.60 1.30 1.10 3 180 grinding stroke Gloss level: 19.50 % Ra R3z Rt Ry Rz 0.43 2.40 4.40 3.70 3.10 13 320 stone with hand-filing machine Gloss level: 19.10 % Ra R3z Rt Ry Rz 0.51 2.90 5.30 5.30 4.30 22 Hard brush 6 µ Gloss level: 41.60 % Ra R3z Rt Ry Rz 0.12 0.30 0.80 0.80 0.60 4 220 grinding stroke Gloss level: 19.50 % Ra R3z Rt Ry Rz 0.46 2.10 4.30 3.80 3.10 14 400 stone with hand-filing machine Gloss level: 16.20 % Ra R3z Rt Ry Rz 0.32 1.70 3.00 2.50 2.30 23 Soft brush 3 µ Gloss level: 56.00 % Ra R3z Rt Ry Rz 0.14 0.30 0.90 0.60 0.50 5 320 grinding stroke Gloss level: 24.50 % Ra R3z Rt Ry Rz 0.27 1.50 2.50 2.30 2.10 15 600 stone with hand-filing machine Gloss level: 18.20 % Ra R3z Rt Ry Rz 0.20 1.20 1.90 1.80 1.60 24 Disks 25 µ Gloss level: 52.80 % Ra R3z Rt Ry Rz 0.08 0.03 0.60 0.60 0.50 6 400 grinding stroke Gloss level: 23.10 % Ra R3z Rt Ry Rz 0.23 1.40 2.20 2.10 1.90 16 800 stone with hand-filing machine Gloss level: 38.40 % Ra R3z Rt Ry Rz 0.14 0.50 1.40 1.00 0.90 25 Disks 15 µ Gloss level: 48.80 % Ra R3z Rt Ry Rz 0.10 less peek 0.70 0.60 0.30 7 500 grinding stroke Gloss level: 26.20 % Ra R3z Rt Ry Rz 0.17 0.90 1.70 1.60 1.40 17 1000 stone with hand-filing machine Gloss level: 44.30 % Ra R3z Rt Ry Rz 0.20 Emery bare 1.30 0.80 0.70 26 Disks 6 µ Gloss level: 45.50 % Ra R3z Rt Ry Rz 0.05 less peek 0.60 0.50 0.30 8 600 grinding stroke Gloss level: 30.00 % Ra R3z Rt Ry Rz 0.13 0.60 1.40 1.20 0.90 27 Bare 45 µ Gloss level: 63.80 % Ra R3z Rt Ry Rz 0.05 0.30 0.30 0.30 0.30 9 800 grinding stroke Gloss level: 36.80 % Ra R3z Rt Ry Rz 0.13 0.50 1.00 0.90 0.70 28 Bare 15 µ Gloss level: 63.40 % Ra R3z Rt Ry Rz 0.05 0.30 0.30 0.30 0.30 10 1000 grinding stroke Gloss level: 52.70 % Ra R3z Rt Ry Rz 0.12 less peek 0.90 0.80 0.60 18 320 emery bare Gloss level: 59.00 % Ra R3z Rt Ry Rz 0.26 1.00 2.10 1.80 1.70 29 High-gloss 6 µ Gloss level: 61.20 % Ra R3z Rt Ry Rz 0.06 Emery bare 0.40 0.30 0.30 19 600 emery bare Gloss level: 59.00 % Ra R3z Rt Ry Rz 0.19 Emery bare 1.50 1.00 0.70 30 High-gloss 3 µ Gloss level: 66.60 % Ra R3z Rt Ry Rz 0.05 Emery bare 0.30 0.30 0.30 High-gloss polishing Step Roughness Order no. 1001