Semi-finished products Plastic granules Special compounds

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ReamingVery tight bore tolerances are obtainable by reamingwith a reamer according to DIN 206, DIN 212, DIN219. A minimum machining allowance of 0.1 mm hasto be planned, because of the plastic elastic behaviour.If the machining allowance is too low, when theworkpieces are reamed, no material will be removedand the workpiece will be warped. After a certaintime the workpiece will return to the original shape,because during machining the yield strength will notbe exceed.PlaningThe metal taps can be used with our polymers. Toreinforce eventual connection threads, metal insertsshould be placed into the workpiece by screwing it orby ultrasounds.The thread of a motion screw, should be made withthe reachable smoothest surface. In this case is recommendedto use a tool bit on a lathe as last processingoperation, with a low cutting-step of ca. 0,05 mm.KnurlingRadial or axial wheel or double-wheel tools, can beused to knurl the ZEDEX ® high performance polymers.Stamping (Hot forming)Only thin-walled workpieces, up to 1,5 mm, can bestamped. A warm-up of the workpiece is necessary.Thickness planing machineBurr removingThe burrs can be removed by a sharp pipecutter, or bya nitrogen burr removal machine.The ZEDEX ® high performance polymers can bemachined by woodworking machinery, e.g. a surfaceand a thickness planer, and as well by metalworkingmachinery, e.g. a shaping and a planing machine. Inany case coarse grinding wheels should be used.Thread cuttingTap drill holes for screw threads up to M8 and biggerthan M10, should have respectively a diameterdimension ca. 0,1 mm and ca. 0,2 mm, bigger thanthe metal´s one. Is also possible thread cutting with“taps and dies”.Burr removing using a burring bladeWith a large-scale manufacturing is a nutshell asabrasive material suitable, for a trumbel finishing.Thread cutting with a threading tap30 ZEDEX ® basic types ZEDEX ® families Post heattreatmentMachiningShippingoverviewSterilizationChemicalresistance
Tolerances for machined <strong>finished</strong> parts<strong>Plastic</strong>s are subject to different physical laws respect the metals. Thermal expansion up to 10 times bigger, lowerstiffness, moisture absorption, anisotropy, post- shrinkage and warping due to stress relaxation, lead to highermanufacturing tolerances. Generally the IT-tolerance from 9 to 12 are used. The IT-tolerance ranges of 7 and 8are available in special cases.General tolerances (for dimensionswithout individual tolerancedesignations)For mechanical engineering technical parts have tobe chosen the red tolerance classes in the table 4.In special cases can be used also a higher tolerancegrade. However, we recommend to adapt the generaltolerance to the table.Permissible deviations for externalradii and chamfer heightsTolerance classf (fi ne)m (medium)c (coarse)v (very coarse)Ranges of nominal lengths[mm]0,5 to 3over 3to 6over 6± 0,2 ± 0,5 ± 1,0± 0,4 ± 1,0 ± 2,0Permissible deviations of angular dimensionsTolerance classPermissible deviations for ranges of nominallengths of the shorter side of the angle concerned[mm]to 10over 10to 50over 50to 120over120 to400over400f (fine)m (medium)± 1° ± 30‘ ± 20‘ ± 10‘ ± 5‘c (coarse) ± 1° 30‘ ± 1° ± 30‘ ± 15‘ ± 10‘v (very coarse) ± 3° ± 2° ± 1° ± 30‘ ± 20‘General tolerances on straightness and flatnessRanges of nominal lengths [mm]Tolerance classto 10over 10to 30over 30to 100over100 to300over300 to1000over1000 to3000H 0,02 0,05 0,1 0,2 0,3 0,4K 0,05 0,1 0,2 0,4 0,6 0,8L 0,1 0,2 0,4 0,8 1,2 1,6Permissible deviations for linear dimensions except for broken edgesRanges of nominal lengths [mm]Tolerance class0,5 to 3over 3to 6over 6to 30over 30to 120over120 to400over400 to1000over1000 to2000over2000 to4000f (fine) ± 0,05 ± 0,05 ± 0,1 ± 0,15 ± 0,2 ± 0,3 ± 0,5 -m (medium) ± 0,1 ± 0,1 ± 0,2 ± 0,3 ± 0,5 ± 0,8 ± 1,2 ± 2,0c (coarse) ± 0,15 ± 0,2 ± 0,5 ± 0,8 ± 1,2 ± 2,0 ± 3,0 ± 4,0v (very coarse) - ± 0,5 ± 1,0 ± 1,5 ± 2,5 ± 4,0 ± 6,0 ± 8,0Table 4: permissible deviations and general tolerancesZEDEX ® basic types ZEDEX ® families Post heattreatmentMachiningShippingoverviewSterilizationChemicalresistance31
Page 1 and 2: ZEDEX ®Tribological Polymer Soluti
Page 3 and 4: Stamping (Hot forming) . . . . . .
Page 5 and 6: Thermal limitation usage of ZEDEX
Page 7 and 8: Comparison of the relative characte
Page 9 and 10: SubstitutionexamplesWhich material
Page 11 and 12: SubstitutionexamplesWhich material
Page 14 and 15: Application with chemicals ZX-530 f
Page 16 and 17: Low friction ZX-550 familyBasic typ
Page 18 and 19: Long-term up to 300 °C ZX-750 fami
Page 20 and 21: Comparison table of the ZEDEX ® ma
Page 22 and 23: Post heat treatmentThe plastic is s
Page 24 and 25: Degree of crystallinitySemi-crystal
Page 26 and 27: Machining guidelineZX-100KZX-100EL6
Page 28 and 29: SawingThe band saw cut speed should
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Page 34 and 35: Shipping overviewShipping overview
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Page 38 and 39: Size list of sheetsMaterialThicknes
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Page 42 and 43: Size list of rods and tubes, made o
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Chemical resistanceIntroductionThe
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Chemical resistance of the ZEDEX ®
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Chemicals listmaterialschemical / c
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Chemical group listThe chemicals gr
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Semi-finished products Plastic granules Special compounds

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