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 characteristics of the forging process require that, for any given forging, all tolerances for thickness dimensions are uniform. All variations, including those due to die wear and shrinkage, are included in the length, width and height tolerances.
Up to and including 0,16;S3: A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the English versionSteel die forgings Tolerances on dimensions Part 1: Los resortes de troquel MDL estn diseados para ser intercambiables con los resortes de Danly y otros 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.
Tolerances for fillet and edge radii shown in Table 6 are applicable to both grade E and grade F.
BS EN 10243-1:1999
From Table 1 the tolerances see Figure 20 102243-1 found to be: Pieces executees a chaud sur marteaux-pilons presses verticales. ISOTechnical drawings Fundamental tolerancing principle. Tolerances for the maximum permissible extent of such distortion are based on the nominal diameter of the unforged stock in accordance with Table 6 and Figure You may find similar items within these categories by selecting from the choices below:.
Amendments issued since publicationAmd. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Marchand conflicting national standards shall be withdrawn at the latest by March Deviations of straightness or flatness as given in Table 5 are not included in the above-mentioned faults of form.
The residual flash is measured from the ej of the forging to the trimmed edge of the flash, as indicated in Figure Reference dimensions included in the examples are given in brackets. In such cases these standard tolerances can form only a basis on which to agree modifications appropriate to the particular circumstances.
Many instances of heavy die wear occur in which these tolerances are inadequate. This special procedure is not applied if larger tolerances will result from use of the normal procedure as shown in 4.
This European Standard is considered to be a supporting standard to those application and product standards which in themselves support an essential safety requirement of a New Approach Directive and enn make reference to this European Standard. S3Type of steel eb Find Similar Items This product falls into dn following categories. For dimensions from a centre to a surface see Figure 9 and for dimensions on steps within one die, the tolerances for the greatest length, width and height shall apply wherever possible.
For centre-to-centre dimensions greater than 1 mm length, tolerances from Table 1 or Table 2, with equal plus or minus dispersions, shall be applied. 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.
Dimensional precision requirements are rigorous to the point that a choice may be made between forging grade F or forging grade E.
Pieces forgees par estampage en acier.
The enveloping shape of a circular forging is the circumscribing cylinder, the mass of which is calculated from the formula see Figure 2: The position of the trimmed flat is measured relative to the theoretical point at which the draft angles meet see Figure They are best dealt with by consultation at the design stage and shall be agreed between the purchaser and the supplier.
In measuring mismatch, accuracy depends upon making due allowance for surplus metal caused by uneven die wear. They apply within the limits stated below unless the purchaser specifies otherwise. All forgings bear the CDP identification mark, unless a different 1 Documents. Figure 6 Type of dimensions10 BSI 12 January Length and width tolerances are to be applied in directions parallel to the main die line, or as nearly so as practical considerations will permit.
This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. Base all thickness tolerances except those for overall thickness on dimension t shown above.
Above 0,63 up to and including 1. Only tolerances to grade F shall be applied.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
In such cases the factor S4 is used; the weight to be taken into consideration is only that of a cylinder having diameter d and height e. Mismatch tolerances depend on the forging mass and on the shape of die line.
These marks may be either 01243-1 or raised.
The centre-to-centre tolerances provided in 10423-1 standard apply only when a straight line joining the two centres occurs within the profile of the forging see Figure The 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. Mismatch tolerances are applied independently of any other tolerances.
For undated references the latest edition of the publication referred to applies. Centre-to-centre tolerances shall be applied independently of, and in addition to, any other tolerances.
Requirements for carbon, carbon manganese and alloy hot worked or cold finished steels. Example of the use of Table 1 Forging grade F for determining the tolerances for length, width, height dimensions of a forging.