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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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.
They apply within the limits stated below unless the purchaser specifies otherwise. They are best dealt with by consultation at the design stage and shall be agreed between the purchaser and the supplier. The same method applies for the use of all tables according to the grade of tolerances required. Published on Jul View Download These 102433-1 may be either sunken or raised.
The shape complexity factor of a forging is the ratio of the mass of the forging to the mass1 of the enveloping shape wn to accommodate the maximum dimensions of the forging: 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 1 employing the category of steel used M1 and shape complexity factor S1.
In those instances where the variation is of importance e. Search all products by.
Above 0,16 up to and including 0,32; S2: They are rn used for check measurements on the actual forging, but for tool construction when forging dimensions are not measurable. As a general rule grade F tolerances result in a cheaper forged component.
On forged surfaces which are not machined subsequently, 102431 pits and surface dressing shall be permitted to a depth equal to one-third of the total value of the thickness tolerance. To determine length, width and height tolerances, reference is first made to the appropriate category in the mass column. Mismatch tolerances are applied independently of any other tolerances.
BS EN 10243-1:1999
Lou Pingeot Dangerous Partnership – Sie? These two grades of tolerances are identified as follows: In extreme cases they can cover the whole field of tolerances unless otherwise agreed between the supplier and the purchaser.
Pieces executees a chaud sur marteaux-pilons presses verticales Title in German Gesenkschmiedeteile aus Stahl. The category of steel used is determined as being within one of the following: Example of the use 102443-1 Table 1 Forging grade F for determining the tolerances for length, width, height dimensions of a forging.
Straightness and flatness tolerances are to be found from Table 5 according to the greatest length or greatest width dimension of the forging. 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.
Instances occur in which the negative tolerances for such local deviations cannot be permitted on unforged stock where it is not subsequently machined. The permissible length of local deviation from the bar stock diameter or section adjoining a forged portion shall be up to 1,5 times the fn stock diameter or largest cross-sectional dimension, but with a maximum value of mm see Figure The horizontal line is then followed to the right.
While grade E close tolerances may be applied to em dimensions on one forging, it is more economical to apply them only to those specific dimensions on which closer tolerances are essential. If the category of steel used is M2, the heavy diagonal line is followed downward to the point of intersection with the vertical line M2 and the horizontal line thus met is followed to the right i.
Centre-to-centre tolerances shall be applied independently of, and in addition to, any other tolerances. Up to and including 0,16;S3: The first part of this European Standard applies to hot forgings in the delivery condition, made in carbon and alloy steels. Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 34, an inside back cover and a back cover. For undated references the latest edition of the publication referred to applies.
10234-1 supplier will draw the attention of the purchaser to such instances and it will be necessary to negotiate greater tolerances on the draft angle surfaces to meet these circumstances.
Tolerances for sheared ends are applied independently of, and in addition to, any other 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. Deviations of straightness or flatness as given in Table 5 are not included in the above-mentioned faults of form.
This publication does not purport to include all the necessary provisions of a contract. Normally the tolerances for the greatest dimension of length or diameter of the forging will be applied but, if more restrictive tolerances are required, those for the specific dimension of the pierced hole 110243-1 be used.
You may find similar items within these categories by selecting from the choices below:. Where restrictions in deviations of form have been agreed, these will be to ISO and noted on the drawing.
Th e strength of Critique – transform- 1 Berlin, 1st Floor deutsch-englisch. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the E Secretariat has the English versionSteel die forgings Tolerances on dimensions Part 1: Ejector mark tolerances are applied independently of, and in addition to, any other tolerances.
Flatness tolerances relate to deviations of surfaces from the specified contour.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
Tolerances for the maximum permissible extent 1024-1 burr relative to such edges are based on the weight of the forging, in accordance with Table 6 and are applied unless the purchaser specifies otherwise. Eccentricity tolerances for deep holes shall be applied in addition to the normal tolerances for mismatch see Figure All variations in thickness, due to die-closure, die-wear 102431 shrinkage are included in the thickness tolerances.
In measuring mismatch, accuracy depends upon making due allowance for surplus metal caused by uneven die wear. Dimensional checks regarding depth of scale pits or any other point fn question should be made in relation to the machining locations. Worldwide Standards We can source any standard from anywhere in the world. The location of burrs shall be indicated to the purchaser on the forging drawing for approval before the commencement of production.
In such cases it can be arranged by negotiation between the purchaser and the supplier that the entire tolerance is shown as a positive one. In such cases these standard tolerances can form 10243–1 a basis on which to agree modifications appropriate to the particular circumstances. S3Type of steel used: