Troubleshooting english 08.10.09
Contents
1. 0 005 0 008 Alloyed steel 0 004 0 008 Tool steel 0 002 0 005 Stainless steel 0 002 0 005 Brass Copper 0 008 0 012 Aluminium 0 010 0 030 H Fz chip load per tooth 40 x speed x t x TPI H height of workpiece t cutting time per section TPI tooth pitch Combi tooth 3 4 3 5 RONIIGEN Metalls gen Band sawing Tips Tooth Pitches TPI e The highest workpiece diameter determines the tooth pitch e f you cut in layers or bundles you have to add the diameters e The form of the workpiece the clamping and the band saw machine have to be considered f you cut thin walled tube on light duty machine in layers add the wall thicknesses see also table tooth pitch selection Band sawing Tips Metalls gen The capacity of the gullet has an important influence on the cutting performance If the tooth takes a chips during cutting the chip is rolled and falls out of the gullet after leaving the workpiece If you take a heavy chip the chip can jam in the gullet and will be drawn back when entering the workpiece the next time Tooth stripping or crooked cutting are the result RONIIGEN Metallsagen Band sawing Tips How to consult your customer 1 Determine the material type and look for correct soeed and feed see table Try to find out what you2. Metallsagen Technical Manual Band Saw Guide Metallsagen Band sawing Feed The feed rate decribes the depth the tooth is penetrating the material ina certain time In order to cut cost efficient you want to run the highest feed rate on your Dr qu D T machine The feed rate however is restricted by the machinability of the workpiece and the life time of the blade A higher feed rate results in smaller cutting angles The cutting is faster but the blade life is significantly lower A smaller feed rate creates higher cutting angles but increases the cutting time So how you know that you uses the right feed rate Check the chips and assess the form and colour see also blade speed The lubrication is important for a long blade life and a cost efficient cutting process Using the lubrication correctly you can reduce thermical stress and create a better chip flow over the tooth face Without lubrication you can get excessive heat caused by friction which results in built up edges The effect reduces the cutting performance and the energy consumption increases which could cause tooth stripping Follow the manufacturer s instructions regarding the right ratio of the lubrication Keep a stock of correctly mixed lubrication Don t refill your machine only with water because you will lose the lubrication with results in premature dulling of the teeth Use a refractometer to check the ratio Check all outlets of the lubri
3. 65 34 35 38 65 35 37 39162 38 40 57 35 38157 37 40 70 39 40 43 70 40 42 44 67 43 45 62 40 43162 42 45 68 37 38 41 68 38 40 42165 41 43 60 38 41 6040 43 70 39 40 43 70 40 42 44 67 43 45 62 40 43 6242 45 63 32 33 36 63 33 35 37 60 36 38 55 33 36 5535 38 48 22 24 25 48 23 26 28145 27 29 40 21 24 40 23 26 73 42 43 46 73 43 45 47 70 46 48 65 49 5216551 54 38 15 17 19 38 16 18 20135 18 20 30 14 17 3016 19 35 12 14 16 35 13 15 17 33 16 18128 14 17 2815 18 64 33 34 37 64 34 36 38161 37 39156 43 46156 45 48 48 22 24 29 48 23 26 28 45 27 29142 23 26142 25 28 52 23 24 26152 25 27 29 49 31 33 44 28 31 4430 33 52 23 25 28 52 25 27 29 49 31 33 48 32 35 48 34 37 36 13 15 17 36 14 16 18 33 16 18128 14 16128 14 17 36 13 15 17 36 14 16 18 33 16 18128 16 19128 17 20 52 23 25 28152 25 27 29149 31 33 44 31 34 44 33 36 43 17 19 20 43 18 21 23 41 23 25 36 20 23136 22 25 43 17 19 20 43 18 23 23 41 23 25 36 21 24136 23 26 39 16 18 20 39 17 19 21 36 19 21 32 17 20132 19 22 1 1158 Ck 25 1 1167 36 Mn 5 1 1186 Ck 40 1 1203 Ck 55 1 1221 Ck 60 1 1223 Cm 60 1 1545 C 105 W 1 1 1730 C 45 W 1 2060 105 Cr 5 1 2080 X210 Cr 12 1 2162 21 MnCr 5 1 2309 65 MnCrMo 4 1 2312140 CrMnMoS 8 6 1 2313 21 CrMo 10 1 2314 X 47 CrMo 15 1 2316 X 36 CrMo 17 1 2327 86 CrMoV 7 1 2343 X 38 CrMoV 5 1 1 2352 22 CrMoV 7 1 2363 X 100 CrMoV 5 1 NN ER S S S N A SS N NS NN S NN S S S S NS S S NS SS A GG A GN NS NS NN NS NS NN S NN S S SN NN SS NN NS S S S NS S S NR S S RN S SS N
4. 27 29149 52 23 25 28 52 25 27 29149 31 8 1012 31 9 11 13 28 34 11 13 13 34 12 14 16 33 38 15 17 19 38 16 18 20135 38 15 17 19 38 16 18 20137 36 13 15 17 36 14 16 18 33 38 15 17 19 38 16 18 20 35 36 13 15 17 36 14 16 18 33 33 10 12 14 33 11 13 15 33 33 10 12 14 33 11 13 15 33 33 10 12 14 33 11 13 15 33 30 7 9 11 30 8 10 12 30 30 7 9 11 30 8 10 12 30 30 7 9 11 30 8 10 12 30 23 23 27 27 23 23 13 23 23 20 18 36 31 31 20 28 28 28 25 25 25 26 36 25 24 36 23 28 140 27 27 40 26 24 36 23 24 36 23 16 28 15 26 36 25 24 36 23 20 32 19 18 30 17 40 52 39 28 44 27 31 44 30 16 28 14 22 132 21 20 32 19 20 32 19 16 28 17 22 32 21 17128 15 18 28 17 18 28 17 18 28 17 16 25 14 16 25 14 16 25 14 lt 300 500 mm 28 26 30 29 26 26 18 28 26 22 20 42 30 33 17 24 22 22 18 24 18 20 20 20 17 17 R ntgen Material DIN Type bi alfa cobalt 100 150 mm 100 150 mm RP Master HM Titan lt 300 500 mm lt N lt N 1 4980 X 5 NiCrTi 26 15 15 Mo 3 36 NiCr 6 14 NiCr 14 31 NiCr 14 15 CrNi 6 20 MnMoNi 5 15 NiCuMoNb 5 36 CrNiMo 4 20 NiCrMo 2 40 NiCrMo 2 2 40 NiCrMo 6 30 CrNiMo 8 34 CrNiMo 6 20 MnCr 5 16 MnCrB 5 42 CrMo 4 50 CrMo 4 24 CrMo 10 13 CrMo 4 4 30 CrMoV 9 14 CrMoV 6 9 21 CrMoV 5 11 50 CrV 4 50 CrV 4 31 CrMo 12 34 CrAINi 7 SS S SS NS SS SS S S S S S S S S GP GR
5. GR S S S SS S S SS SS NS NN S S S S S S S NS S SS C NS SIS SS S S C ANN NN S NS NN S S S S S SS S S S NS S S C N S CD Ch S S S S GG NN NN NS RONMGEN Metallsagen Table 2 Tooth Pitch selection For solid material gt L ii a PENINA CARE the field of application and reduces vibration in the cutting process 200 600 mm 1 1 1 6 tpi ee ee gt 500 mm 0 75 1 25 tpi For Tubes and Pipes For thin tubes up to 8 mm of wall thickness it is recommended to use a toothing with 0 tooth rake angle Please also refer to our new products bi alf cobalt profile P and Q Tooth pitch recommendation for tubes and pipes all Thickness Outer Diameter D mm 5 mm Tooth Pitch Z tpi po 20 40 60 80 100 120 150 200 300 500 3 14 10 14 10 14 8 2 8 2 8 2 812 6 10 610 5 8 4 10 44 1014 8 2 8 2 8 12 60 6 10 5e 58 4o 5 10 44 1014 8 2 8 2 eno 60 5e 46 46 4o NEN C enz p ehz eho f ero 5e EA e se e MM M 10 14 8 12 8 12 6 10 5 8 5 8 4 6 4 6 4 6 4 6 TE 8 12 6 10 5 8 4 6 4 6 4 6 4 6 4 6 4 5 12 8 12 6 10 4 6 4 6 4 6 4 6 4 6 4 6 4 5 Ten emo a6 a6 46 4e 45 45 a6 20 46 46 46 46 45 45 45 34 o o ao j 46 46 45 45 45 45 23 e a4 es aT a l Metallsagen Table 3 Twisting distance in sawing machines In order to secure the blade life it is important to maintain
6. Metallsagen Table 1 Cutting Parameter for Bi Metal Band Saw Blades Please note that the undernoted recommendation can only give a limited coverage of cutting parameters If you do not find your material and or your band width please contact R ntgen for further information Vc Band speed in m min Vz Cutting performance in cm min Rontgen 34x1 1mm 141x1 3mm 54x1 3mm 54x1 6mm mm Material DIN Type bi alfa cobalt RP 100 150 mm S 200 250 mm lt O 150 200 mm RP Master HM Titan lt 250 350 mm S 200 250 mm lt 300 500 mm lt S 200 250 mm lt 300 500 mm lt 50 100 mm 100 150 lt 200 400 mm lt o T 50 mm lt N lt N lt N 1 0070 St 70 2 68 37 38 41 68 38 40 42 65 41 43 60 38 41 6040 43 1 0301 C 10 71 40 41 44 71 41 43 45168 44 46 63 41 44 6343 46 1 0303 QST 32 3 68 37 38 41 68 38 40 42 65 41 43 60 38 41 6040 43 1 0401 C 15 68 37 38 41 68 38 40 42165 41 43 60 38 41160 40 43 1 0501 C 35 71 40 41 44 71 41 43 45168 44 46 63 41 44 6343 46 1 0503 C45 71 40 41 44 71 41 43 45168 44 46 65 43 46 6545 48 1 0570 St 52 3 70 39 40 43 70 40 42 44 67 43 45 62 40 43 6242 45 1 0601 C 60 66 35 36 39 66 36 38 40 63 39 41 58 36 39 58 38 41 1 1121 Ck 10 68 37 38 41 68 38 40 42 65 41 43 62 43 46 6245 48 1 1133 20 Mn 5 65 34 35 38 65 35 37 39162 38 40 57 35 38 5737 40 1 1141 Ck 15 68 37 38 41 68 38 40 42 65 41 43 60 41 44160 43 46 70 39 40 43 70 40 42 44 67 43 45 62 40 43162 42 45
7. Metallsagen 4 Chipped or broken teeth A scattered type of tooth breakage on tips and corners of the teeth Probable Cause Improper break in procedure Solution Break in of blade for about 500 cm cutting surface with 70 of normal band speed and 50 of downfeed please refer to the charts at the end of this guideline Improper blade selection for application Handling damage due to improper opening of folded band Solution Please remove teeth protection only when blade is installed on machine Improper positioning or clamping of material Solution Please refer to instructions for clamping the material Excessive feeding rate or feed pressure Solution Please refer to cutting parameter table Hitting hard spots or hard scale in material Metallsagen 5 Discolored Tipps of teeth due to excessive frictional heat The tooth Tipps show a discolored surface from generating an aexcessive amount fo frictional heat during use Probable Cause e Insufficient sawing fluid inadequate supply improper ratio and or improper application Solution Check oil coolant content with refractometer Secure sufficient cooling e Excessive band speed Solution Please refer to parameter table e Improper feed rate Solution Please refer to parameter table e Band installed backwards Metallsagen 6 Tooth strippage section or sections of teeth which broke from the band backing Probable Cause Improper
8. N SNC N NS NS SN S Material DIN Type 1 2365 X 32 CrMoV 3 3 1 2367 X 38 CrMoV 5 3 105 WCr 6 X 210 CrW 12 115 W8 100 MnCrW 4 1 2601 X 165 CrMoV 12 1 2606 X 37 CrMoW 5 1 X 45 CoCrWV 5 1 2678 ud 1 2713 55 NiCrMoV 6 1 2738 40 ibus 8 1 2766 35 NiCrMo 16 1 2767 X 45 NiCrMo 4 1 2779 X 6 NiCrTi 26 15 1 2842 90 MnCrV 8 1 3243 S 6 5 2 5 1 3255 S 18 1 2 5 1 3343 S 6 5 2 1 3505 100 Cr 6 1 3536 100 CrMo 7 3 1 3539 100 CrMnMo 8 1 3965 X 8 CrMnNi 18 8 1 4006 X10 Cr 13 1 4028 X30 Cr 13 1 4057 X 20 CrNi 17 2 1 4116 X 45 CrMoV 15 1 4301 X5 CrNi 18 10 X 5 CrNiMo 17 1 4401 12 2 1 4462 X2 or 22 X 6 CrNiMoTi 17 1 4571 15 5 1 4742 X10 CrAl 18 1 4815 GX 8 CrNi 19 10 X 15 CrNiSi 25 1 4841 20 1 4923 X 22 CrMoV 12 1 X S S bi alfa cobalt NN SS S K S SS SN SN SN N N SS N S NS S S lt SS NS lt NS NN SS QR S SS N SN S NN N S SN NR SN S S S SIS S Cas NN SS S S lt SN S NS NN SS S S S SN S NS R ntgen RP Master HM Titan NN SS S K S SNR SN NS NS S NS N SS N S NS S S SSSS NS S lt NS 100 150 mm lt N 44 18 20 21 44 19 22 24141 44 18 20 21 44 19 22 24141 46 20 22 23 46 21 24 26 45 46 20 22 23 46 21 24 26 45 44 18 20 21 44 19 22 24 41 44 18 20 21 44 19 22 24 41 33 10 12 14 33 11 13 15 30 44 18 20 21 44 19 22 24141 44 18 20 21 44 19 22 24141 40 14 16 17140 15 18 20 37 38 15 17 19 38 16 18 20135 60 29 30 33 60 30 32 34157 52 23 25 28 52 25
9. a sufficient distance for the the blade to twist and bend between the guide wheel driven wheel and the side guides The below table has been taken from a recommendation of the North American Sawing Association All values in mm Please note that the below data Is not suitable for high speed applications such as cutting of aluminium with band speeds exceeding 1 500 m min 160 m5 is m m Lm pom 160 25 270 35 ae a 160 25 270 35 225 455 225 455 2 0 365 455 545 Table 4 Contour sawing The following radii should be considered during contour sawing on vertical machines
10. cation system to make sure that all necessary parts will be lubricated Optimum feed gt gt gt curled and silver chips Feed too low gt gt gt very thin chips Feed too high gt gt gt blue and heavy chips Metalls gen Band sawing Speed Blade speed or speed defines how fast the blade is running through the material A higher blade speed results in higher cutting angles and increases therefore the cutting performance The speed is restricted by the machinability of the material and the heat created during cutting Cutting with high blade speed in hard material can cause excessive heat resulting in low blade life Higher blade speed Lower blade speed How we know whether we are cutting with the correct speed Look at the chips and check colour and form Our aim is to get chips which are thin tight rolled and if touched warm A change in colour from silver to slightly blue means excessive heat and probable a too high speed Blue chips show a too high temperature resulting in low blade life RONIIGEN Metallsagen Band sawing Terminology band sawing Break in of the blade rounding of the tooth tips The correct speed and feed values see table should be reduced by 50 feed 30 speed After cutting about 500 cm you should increase both values carefully too 100 Chip load The following values are good up to 500 mm workpiece diameter Chip load per tooth mm Low alloyed steel
11. d or improper application Solution Check oil coolant content with refractometer Secure sufficient cooling Metallsagen 10 Uneven wear or scoring on the sides of band Wear patterns are near gullet area on one side and near back edge on opposite side Probable Cause Loose side guides Solution Adjust side guides Chipped worn or defective side guides Solution Change side guides Band is rubbing on part of machine Solution Maintain machine Guide arms are spread to maximum capacity Solution Adjust guide arms always according to material dimension Accumulation of chips in side guides Solution Maintain proper chip removal Metallsagen 11 Body breakage or cracks from gullets The origine of the fracture is indicated by a flat area on the fracture surface Probable Cause Excessive back up guide preload Solution Refer to operators manual or contact machine manufacturer Improper band tension Solution The recommended band tension is 300 N mm2 Please use band tension gauge to adjust The guide arms are spread to maximum capacity Solution Adjust guide arms according to material dimension Improper beam bar alignment Solution Contact machine manufacturer Side guide adjustment is too tight Solution Adjust side guides Excessively worn teeth Solution Band was dull and therefore heavy loaded please change band Metallsagen 12 Body Breakage Fracture traveling i
12. d tension Solution The recommended band tension is 300 N mm2 Please use band tension gauge to adjust Notches in back edge from handling damage Solution Please handle blades carefully Avoid scratching of teeth of one blade on back edge of another Metallsagen 14 Heavy wear and or swaging on back edge Heavy back edge wear will have a polished appearance or abnormal grooves worn into surface Swaging of corners can also occur e Probable Cause e Excessive feed rate Solution Refer to parameter tabel e Excessive back up guide preload Solution Contact machine manufacturer e Improper band tracking back edge rubbing heavy on wheel flange Solution Adjust back up guides adjust wheel alignment e Worn or defective back up guides Solution Change back up guides Metalls gen 15 Butt weld breakage Probable Cause Any of the factors that cause body breakage can also cause butt weld breaks Please note that the weld joint is the weakest part of the blade Please refer also to observations no 11 13 Metalls gen 16 Used band is long on the tooth edge Long on the tooth edge is a term used to describe the straightness of the band The teeth are on the outside of the arc when the strip is Iying on a flat surface po g E k geri f e ie gt p u e Eus gt P E T yur EI gt rin 11 1 034254224 Ph 7 P P V EE POCHE I Probable Cause e Side guides are
13. fractometer Secure sufficient cooling e Worn missing or improperly installed chip brush Solution Adjust or change chip brush e Improper feeding rate too high and or improper band speed too low Solution Please refer to parameter table ONIGEN Metallsagen 8 Gullets Loading up with Material Gullet area has become filled with material being cut Probable Cause basically as under chip welding Too fine tooth pitch insufficient gullet capacity Solution Select the right tooth pitch or use tooth pitch selection chart in Roentgen catalogue Excessive feeding rate creating too large of a chip Solution Please refer to parameter table Worn missing or improperly installed chip brush Solution Adjust or change chip brush Insufficient sawing fluid due to inadequate supply improper ratio and or improper application Solution Check oil coolant content with refractometer Secure sufficient cooling Metallsagen 9 Heavy Wear on both Sides of Band Both sides of band have heavy wear pattern This wear pattern frequently comes along with a band breakage originating at the wear marks Probable Cause e Chipped or broken side guides Solution Change side guides e Side guide adjustment may be too tight Solution Adjust side guides e Insufficient flow of sawing fluid through the side guides Solution Maintain machine e Insufficient sawing fluid due to inadequate supply improper ratio an
14. n angular direction The fracture originates in the gullet and immediately travels in an agular direction into the backing of band Probable Cause An excessive twist type of stress existed Solution Contact machine manufacturer Guide arms spread to capacity causing excessive twist from band wheel to guides Solutions Adjust guide arm spread to work piece dimension In case the maximum guide arm capacity has to be used if possible change to machine with bigger clamping capacity Guide arm spread too wide while cutting small cross section Solution Adjust guide arm spread according to material dimension Excessive back up guide preload Solution Contact machine manufacturer Metalls gen 13 Body Breakage or Cracks from Back Edge The fracture originates from the back edge of band The origin of the fracture is indicated by a flat area on the fracture surface Probable Cause Excessive back up guide preload will cause back edge to work harden which results in cracking Solution Adjust pressure block or contact machine manufacturer Excessive feed rate Solution Reduce feed rate or pressure or refer to parameter table Improper band tracking back edge rubbing heavy on wheel flange This results in a build up of martensite very hard layer which tends to breakage Solution Adjust back up guides adjust wheel alignment Worn or defective back up guides Solution Change back up guides Improper ban
15. of lack of break in procedure Solution Break in of blade for about 500 cm cutting surface with 70 of normal band speed and 50 of downfeed please refer to the charts at the end of this guideline Worn missing or improperly installed chip brush Solution Adjust or change chip brush Excessive feed rate or feed pressure Solution Please refer to parameter table Movement or vibration of material being cut Solution Please check clamping unit Improper positioning of material being cut Solution Please check clamping unit Imsufficient sawing fluid Solution Check oil coolant content with refractometer Secure sufficient cooling Hard spots in material being cut Improper tooth pitch for cross sectional size of material being cut Solution Please refer to tooth pitch selection table Band speed too slow for grade of material being cut Solution Please refer to parameter table Metallsagen 7 Chip welded to Tooth Tips High temperature or pressure generated during the cut bonding the chips to the tip and face of the teeth This is a common effect when cutting alumium with speeds lower than 300 m min Important When cutting aluminium always work with positive tooth rake angle 0 tooth rake angle will most probable cause chip welding CHIP WELDING Probable Cause e Insufficient sawing fluid due to inadequate supply improper ratio and or improper application Solution Check oil coolant content with re
16. r customer is looking for Blade life Surface finish Cutting time o Please note that it is not possible to achieve all three ee em CO Check the condition of the machine Brush Guides 4 Check lubrication oil cotent about 8 12 If cutting stainless steel or tool steels you should go up to 15 or higher or using cutting oil 5 Break in the blade except using a coated blade 6 Choose the correct tooth pitch see table N Check the chips at the beginning of the cutting process and try to avoid vibration by adjusting the feed and speed 8 Make a full documentation for further usage Metallsagen Typical defects of band saw blades and probable causes 1 Metallsagen Heavy even wear on tips and corners of teeth The wear on teeth is smooth across the Tipps and the corners of set teeth have become rounded Probable Cause Improper break in procedure Solution Break in of blade for about 500 cm cutting surface with 70 of normal band speed and 50 of downfeed please refer to the charts at the end of this guideline Excessive band speed for the type of material being cut This generates a high tooth tip temperature resulting in accelerated tooth wear Solution Consult chart for exact band speed adjustment Low feed rate causes teeth to rub instead of penetrate This is most common on work hardened materials such as stainless and tool steels Solution Consult cha
17. rt for exact feed and speed data IMPORTANT Cut stainless steels always with positive tooth rake angle Hard materials being cut such as flame cut edge or abrasive materials such as fiber reinforced composites Insufficient sawing fluid due to inadequate supply improper ratio and or improper application Solution Check oil coolant content with refractometer Secure sufficient cooling Metallsagen 2 Wear on both sides of teeth The side of teeth on both sides of band have heavy wear markings WEAR LINES LOSS OF SE Probable Cause e Broken worn or missing back up guides allowing teeth to contact side guides Solution Change guides e Improper side guides for band width Solution Change guides e Backing the band out of an incomplete cut Solution Avoid Metallsagen 3 Wear on one side of teeth Only one side of teeth has heavy wear markings Result is a not perpendicular cut Probable Cause Worn wheel flange allowing side of teeth to contact wheel surface or improper tracking on flangeless wheel Solution Please adjust back up guides Loose or improperly positioned side guides Solution Please adjust side guides Blade not perpendicular to cut Solution Please adjust back up guide Blade rubbing against cut surface on return stroke of machine head The teeth rubbing against a part of machine such as chip brush assembly guards etc Solution Please maintain machine
18. sagen 19 Broken band shows a twist in band length Probable Cause e Excessive band tension Solution The recommended band tension is 300 N mm2 Please use band tension gauge to adjust e Any of the band conditions mentioned in 16 and or 17 Solution See above e Cutting a tight radius Solution Refer to table in order to find max cutting radius for band width Metallsagen 20 Heavy wear in only the smallest gullets Heavy wear in only the smallest gullets is an indication that there is a lack of gullet capacity for the chips being produced Please note that the smallest gullet determines the capacity of the blade Probable Cause e Excessive feeding rate Solution Refer to the parameter table e Too slow of band speed Solution Refer to the parameter table e Too fine tooth pitch for the size of material to be cut Solution Refer to tooth pitch selction table or consult your band saw blade supplier Metallsagen Auf dem Knapp 44 D 42855 Remscheid Germany export roentgen saw com Telefax 49 0 2191 373 999 Company Name __ Date Lubrication mixture oog Band tension o ooo Band speed Actual machine setting Damping rolls Infeed o Side guides Infeed oo wg Back up guides Infeed ooo g Damping Rolls Outlet fF Side guides Outlet J ooo g Back up guide Outlet o b Comments Metallsagen Cuttin Parameter Recommendation for R ntgen Band Saw Blades
19. too tight rubbing near the gullets Solution Adjust side guides e Excessive preload band riding heavily against back up guides Solution Refer to operators manual or contact machine manufacturer e Worn band wheels causing uneven tension Solution Contact machine manufacturer e Guide arms are spread to maximum capacity Solution Adjust guide arms according to material dimension e Excessive feed rate Solution Refer to parameter table Metallsagen 17 Used band is short on the tooth edge Short on the tooth edge is a term used to describe the straightness of the band The teeth are on the inside of the arc when the strip is lying on a flat surface Probable Cause e Side guides are too tight rubbing near back edge Solution Adjust side guides e Worn band wheels causing uneven tension Solution Contact machine manufacturer e Guide arms are spread to maximum capacity resp too far apart for the workpiece Solution Adjust guide arms according to workpiece dimension e Excessive feed rate Solution Refer to the parameter table Metallsagen 18 Band is twisted Probable Cause e Excessive band tension Solution The recommended band tension is 300 N mm2 Please use band tension gauge to adjust e Any of the band conditions mentioned in 16 and or 17 Solution See above e Cutting a tight radius Solution Refer to table in order to find max cutting radius for band width Metall
Download Pdf Manuals
Related Search