BWF Protec Products for the Aluminum Industry

Transcription

1 BWF Protec Products for the Aluminum Industry High Performance Needle Felt Products BWF Tec GmbH & Co. KG Germany Aluminum Industry 1

2 EXTRU-LINE TM BWF Tec GmbH & Co. KG Germany Aluminum Industry 2

3 Advantages of heat resistant felt Comparison of heat resistant felt to graphite Graphite is a hard and rough material with nearly no ability to absorb impact; bumps, bounces and scratches may mark the shape and surface of the profile. Shadow Spots (Hot Spots) Metallurgical inconsistencies can result from heat concentrations on the graphite bars. No reheating of profiles The aluminum may become polluted with graphite particles (graphite inclusions or graphite streaks). High costs because of additional finishing efforts and profiles to be scrapped High temperature heat felts have the advantage of insulation, temperature balancing, smooth surface and high impact absorbance Heat resistant fibers have no affinity to aluminum Customers getting more and more pretentious and demand high quality aluminum profiles. Investment in heat-resistant felt brings the scrap rate down and saves time and money for maintenance BWF Tec GmbH & Co. KG Germany Aluminum Industry 3

4 Qualities BWF Tec GmbH & Co. KG Germany Aluminum Industry 4

5 Fiber properties Polyester Preox Meta-Aramide Para-Aramide PBO Density of fiber g/cm³ 1,38 1,4 1,38 1,44 1,54 Tensile strength cn/tex Temperature resistance (continuous) C ( F) Temperature resistance (peaks) C ( F) 180 (356) 200 (392) 200 (392) 200 (392) 350 (662) 180 (356) 250 (482) 240 (464) 500 (932) 550 (1022) Melting Point C ( F) 250 (482) BWF Tec GmbH & Co. KG Germany Aluminum Industry 5

6 Needle Felt Roller Covers Technical regulations for roller covers individual thickness, temperature and mechanical resistance seamless, endless round needled resin hardening available on request maximum length: 2000 mm possible wall thickness: 4 mm up to 12 mm average delivery time: 3 to 4 weeks for soft rollers, 5 6 weeks for resin hardened rollers BWF Tec GmbH & Co. KG Germany Aluminum Industry 6

7 List of Rontex tools Soft roller Resin treated roller possible ID in mm possible ID in mm ,5 19, ,5 48,5 Soft roller Resin treated roller possible ID in mm possible ID in mm ,5 60, ,5 63, ,3 76, ,6 101,6 Soft roller Resin treated roller possible ID in mm possible ID in mm , ,1 165, BWF Tec GmbH & Co. KG Germany Aluminum Industry 7

8 Belts Endless belts for hot zones real endless felt belts laminated felt belts Endless belts for cold zones real endless felt belts laminated felt belts Timing belts rubber or PU timing belts covered with felt for hot and cold zones BWF Tec GmbH & Co. KG Germany Aluminum Industry 8

9 Real endless/seamless felt belts for hot zones made of 100 % temperature resistant fibers in very compact structure, endless round needled without joint or seam high strength and low elongation made of different materials: PBO-para-aramide sandwich-construction for temperatures up to 550 C para-aramide for temperatures up to 500 C para-aramide/preox fiber blend for temperatures up to 450 C meta-aramide for temperatures up to 240 C polyester for temperatures up to 180 C standard thicknesses 6, 7, 8, 10 up to 12 mm glued tracking guides on request self-healing felt surface optimum production quantities for endless belts. Belts are produced as an wide endless tube which is cut in single belts in requested width BWF Tec GmbH & Co. KG Germany Aluminum Industry 9

10 Optimum production widths for endless/seamless belts Belts made of para-aramide and PBO/para-aramide sandwich construction BWF-Code CBB KR 62, CBB KR 73, CBB KR 83, CBB KR 103, CBB KR-PE 123, CBB KR- PE 73, CBB KR-PE 83, CBB KR-PE 103, CBB KR-PE 123, CBB PBO2-KR 73, CBB PBO2- KR 83, CBB PBO2-KR 103 optimum production width: 1000 or 2000 mm Belts made of meta-aramide and para-aramide-preox blend BWF-Code CBB NO-PE 62, CBB NO-PE 73, CBB NO-PE 83, CBB NO-PE 103, CBB KRSFO-NO-PE 73, CBB KRSFO-NO-PE 83, CBB KRSFO-NO-PE 103 optimum production width: 900 or 1800 mm Belts made of polyester BWF-Code CBB PE 73, CBB PE 83, CBB PE 103 optimum production width: 780 or 1650 mm BWF Tec GmbH & Co. KG Germany Aluminum Industry 10

11 Stress-strain diagram of textile belts Test conditions: comparison of elongation of belts woven belt: yarns made of a paraaramide/preox/meta-aramide fiber blend laminated felt belt: para-aramide fiber felt on heavy duty polyester carrier fabric endless/seamless felt belt: 100 % paraaramide fibers with reinforcement tests all carried out on original belt places all test pieces without joint tested on a Zwick/Roell tensile strength tester Force (dan/cm) endless/seamless felt belt laminated felt belt woven belt 1% 2% 3% 4% Elongation BWF Tec GmbH & Co. KG Germany Aluminum Industry 11

12 Pads standard thicknesses: 4, 5, 6, 10 and 15 mm; further thicknesses on request resin hardening available: max. dimensions 1500 x 1500 mm self-adhesive backing (double tape) on request different types: stripes cut on length for walking beam covers sheets coils lozenge-shaped parts for chain conveyor systems flanges as side stoppers for run-outs BWF Tec GmbH & Co. KG Germany Aluminum Industry 12

13 Spacer Sleeves HTSB 24 meta-aramide spacer sleeves temperature resistance up to 240 C sewn with high-temperature resistant meta-aramide sewing thread with conventional outstanding seam or flat seam LTS 40 hs polyester spacer sleeves temperature resistance up to 180 C welded, flat seam shrinkable for tight, correct fitting to the spacer profile HTS 220 spacer sleeves temperature resistance up to 220 C welded, flat seam shrinkable for tight, correct fitting to the spacer profile BWF Tec GmbH & Co. KG Germany Aluminum Industry 13

14 Spacer Pads meta-aramide spacer pads temperature resistance up to 200 C thickness 2.5 up to 10 mm resin treatment possible self-adhesive backing possible delivered as long coils made up to size available in white or grey/coloured melange polyester spacer pads temperature resistance up to 180 C thickness from 2 up to 10 mm resin treatment possible delivered as long coils or made up to size good cost-peformance ratio BWF Tec GmbH & Co. KG Germany Aluminum Industry 14

15 Quality Management BWF Tec GmbH & Co. KG Germany Aluminum Industry 15