DIN EN – Free download as PDF File .pdf), Text File .txt) or read online for free. Find the most up-to-date version of DIN EN at Engineering Buy DIN EN STEEL DIE FORGINGS – TOLERANCES ON DIMENSIONS – PART 1: DROP AND VERTICAL PRESS FORGINGS.
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To determine length, width and height tolerances, reference is first made to the appropriate category in the mass column. Mismatch tolerances depend on the forging mass and on the shape of die line. Also, the deviations of form do not include scale pits and depth of surface dressing see 5.
All variations in thickness, due to die-closure, die-wear and shrinkage are included in the thickness tolerances. Figure 16 Dimensions to which centre-to-centre tolerances are not applicable other than by negotiation Figure 17 Fillet and edge radii16 BSI 12 January Burr tolerances are applied independently of, and in addition to, any other tolerances.
Reference dimensions included in the examples are given in brackets. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
They shall be taken from Table 1 and Table 2.
Such special tolerances shall be agreed between the supplier and the purchaser before the commencement of production. By further movement to the right, the correct tolerance is found under the appropriate vertical column heading for the dimension concerned wherever possible the greatest eb of length, width or height see 5. Deviations of straightness or flatness as given in Table 5 are not included in the above-mentioned faults of form.
Instances occur in which the negative tolerances for such local deviations cannot be permitted on unforged stock where it is not subsequently machined. All variations, including those due to die wear and shrinkage, are included in the length, width and height tolerances.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
Accept and continue Learn more about the cookies we use and how to change your settings. The application of such tolerances should be kept to a minimum and, in sn instances, the tolerances shall be indicated clearly against the appropriate dimension s on the forging drawing. For undated references the latest edition of the publication referred to applies.
Base all thickness tolerances except those for overall thickness on dimension t shown above. Such requirements usually necessitate 1024-1 operations, e.
Pieces executees a chaud sur marteaux-pilons presses verticales. Length, width and height tolerances are shown in Table 1 and Table 2 as applied to dimensions between external surfaces see Figure 7i. In such cases the minus tolerance is modified to allow for the dn of a square corner.
BS EN 10243-1:1999
The shape complexity factor of a forging is the ratio of the mass of the forging to the mass1 of the enveloping shape necessary to accommodate the maximum dimensions of the forging: Considerations of this nature, whilst frequently encountered, are highly individual, and vary widely. VanDeusen Wisc B Documents. The enveloping shape of a circular forging is the circumscribing cylinder, the mass of which is calculated from the formula see Figure 2: All forgings bear the CDP identification mark, unless a different 1 Documents.
The nominal diameter and the location of ejector marks will be indicated to the purchaser on the forging drawing before the commencement of production.
Centre-to-centre tolerances shall be applied independently of, and in addition to, any other tolerances. Up to and including 0,16;S3: To determine the category in which a steel belongs, the 12043-1 permitted content of the elements in the steel specification shall be the values used.
In such cases, special tolerances shall be negotiated with the purchaser before the commencement of production. Where any een tolerances are applicable they are indicated in the example by a small solid black circle alongside the tolerance.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to 10423-1 Central Secretariat or to any CEN member. Flatness tolerances relate to deviations of surfaces from the specified contour.
Worldwide Standards We can source any standard from anywhere in the world. The tables showing dimensional tolerances are based on the R20 series of preferred numbers see ISO 3.
For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision.
When straightness tolerances or flatness tolerances are required, this shall be indicated on the agreed forging drawing. The tolerances specified apply to 10243–1 not exceeding kg in mass or 2 mm maximum dimension.
Above 0,16 up to and including 0,32; S2: