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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The weight of the total length in question shall be calculated as if of unforged stock, irrespective of whether this is the case or not. Instances occur in which the negative tolerances for such local deviations cannot be permitted on unforged stock where it is not subsequently machined. Search all products by. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member.
They apply within the limits stated below unless the purchaser specifies eb. The height or the depth of an ejector mark, relative to the surrounding surface, 1023-1 not exceed one-half Figure 13 Application 1024-1 thickness tolerances to deep hubs14 BSI 12 January of the total tolerance permitted, unless stated otherwise on the agreed forging drawing. 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.
The characteristics of the forging process require 1024-1, for any given forging, all tolerances for thickness dimensions are uniform. All forgings bear the CDP identification mark, unless a different 1 10243-11. When no tolerance is indicated against the dimension concerned, the tolerance for the maximum length or width of the forging shall be applied from Table 1 or Table 2but the dispersion will be plus and minus one-half of the total tolerance, and not as shown in the tables.
The tolerances are determined from Table 3 and Table 4 in accordance with the greatest thickness dimension of the forging.
Drop and vertical press forgings Status: Length, width and height tolerances are shown in Table 1 and Table 2 as applied to dimensions between external surfaces see Figure 7i.
Mismatch tolerances are applied independently of any other tolerances. Pieces executees a chaud sur marteaux-pilons ej verticales.
See also Figure In the case of a forging having a flange from which projects: The first part of this European Standard applies to hot forgings in the delivery condition, made in carbon and alloy steels. This should be done to obviate unnecessary minor variations between tolerances, thus facilitating drawing preparation and simplifying inspection procedures.
Flatness tolerances relate to deviations of surfaces from the specified contour. Normally the tolerances for the greatest dimension of 10234-1 or diameter of the forging will be applied but, if more restrictive tolerances are required, those for the specific dimension of the pierced hole may be used.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
102431 Examples are shown of circular and non-circular forgings see Figure 2 and Figure 3. Published on Jul View Download Warm hergestellt in Haermmern und Senkrecht-Pressen. In both cases, the permissible deviations shall be mentioned besides the relative measurements in the drawings of the forgings.
Requirements for carbon, carbon manganese and alloy hot worked or cold finished steels. Deviations of straightness or flatness as given in Table 5 are not included in the above-mentioned faults of 10243–1. They are classified into four groups; accordingly each of them is displayed in the table. This European Standard does not apply to upset forgings made on horizontal forging machines see EN Ost 1 71 english translation deutsch, francais, italiano Business.
Permissible tolerances based on the greatest dimensions are usually obtained from the appropriate table Maximum length: Tolerances for heavier or larger forgings shall be agreed at the time of enquiry and order. Please download Chrome or Firefox or view our browser tips. 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: All variations, including those due to die wear and shrinkage, are included in the length, width and height tolerances.
The location of burrs shall be indicated to the purchaser on the forging drawing for approval before the commencement of production. To determine length, width and height tolerances, reference is first made to the appropriate category in the mass column. 102431
Worldwide Standards We can source any standard from anywhere in the world. These normative references are cited at the appropriate places in the text and the publications are listed hereafter.
The faster, easier way to work with standards. For undated references the latest edition of the publication referred to applies. When a forging is produced at the extremity of a portion of unforged stock, the length tolerance from any inner face of the forged portion to that extremity shall be determined from Table 10243–1 employing the category of steel used M1 and shape complexity factor S1.
Tolerances for fillet radii and edge radii are shown in Table 6 and examples of such radii are shown in Figure Centre-to-centre tolerances shall be applied independently of, and in addition to, any other tolerances.