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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Accept and continue Learn more about the cookies we use and ne to change your settings. Up to and including 0,16;S3: In those instances where the variation is of importance e.
Tolerances for the maximum permissible extent of 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. This European Standard does not apply to upset forgings made on horizontal forging machines see EN This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3.
Requirements for carbon, carbon manganese and alloy hot worked or cold finished steels.
This special procedure is not applied if larger tolerances will result from use of the normal procedure as shown in 4. On forged surfaces which are to be machined subsequently, scale pits and surface dressing shall be permitted, but the maximum depth shall be such that at least one-half of the nominal machining allowance remains.
Compliance with a British Standard does not of itself confer immunity from legal obligations. This publication does not purport to include all the necessary provisions of a contract.
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 Only tolerances to grade F shall be applied.
BS EN 10243-1:1999
As a general rule grade F tolerances result in a cheaper forged component. Find Similar Items This product falls into the following categories. They apply within the limits stated below unless the purchaser specifies otherwise.
You may find similar items within these categories 10234-1 selecting from the choices below:. The minus tolerances do not apply to edge radii up to and including 3 mm when such radii are affected by subsequent removal of draft by trimming or punching.
In both cases, the permissible deviations shall be mentioned besides the relative measurements in the drawings of the forgings. For that reason measurements should be made at areas of the forging least affected by die 1024-31. Customers who bought this product also bought BS EN 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.
This approach will ensure that optimum use is made of the forging process in fulfilling the purchaser’s special requirements at the lowest additional cost. Instances occur in which the negative tolerances for such local deviations cannot be permitted on unforged stock where it is not subsequently machined. Users are responsible for its correct application. 1024-31 a forging is produced at the extremity of a portion of unforged em, 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 extreme cases they can cover the whole field of tolerances unless otherwise agreed between the supplier and the purchaser.
Straightness and flatness tolerances are applied independently 10423-1, and in addition to, any other tolerances.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
The centre-to-centre tolerances provided in this standard apply only when a straight line joining the two centres occurs within the profile of the forging see Figure Example of the use of Table 1 Forging grade F for determining the tolerances for length, width, height dimensions of a forging.
The same method applies for the use of all tables according to the grade of tolerances required. When tolerances for sheared ends are required, this will be indicated to the purchaser on the forging drawing before the commencement of production. For undated references the latest edition of the publication referred to applies.
They shall be taken from Table 1 and Table 2. In the latter case the tolerances shall be indicated against the appropriate dimension on the forging drawing.
Your basket is empty. The dn, easier way to work with standards. In such cases the minus tolerance 1024-31 modified to allow for the formation of wn square corner.
The position of the trimmed flat is measured relative to the theoretical point at which the draft angles meet see Figure Deviations of straightness or flatness as given in Table 5 are not included in the above-mentioned faults of form.
Where more restrictive tolerances are required for application to individual dimensions of thickness, supplementary operations are involved. Pieces forgees par estampage en acier. In measuring mismatch, accuracy depends upon making due allowance for surplus metal caused by uneven die wear.
Ejector mark tolerances are applied independently of, and in addition to, any other tolerances. The category of steel used is determined as being within one of the following: Annex A gives for information some examples of the application of these tolerances for different types of closed die forgings.
Such special tolerances should be negotiated between the purchaser and the supplier in accordance with 1. Above 0,63 up to and including 1. This grade ej not be specified unless the additional forging cost entailed can be justified by a consequent saving in overall cost. The positive residual flash and negative trimmed flash values permitted are given in Table 1 and Table 2.
Drop and vertical press forgings Status: 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.
The height or the depth of an ejector mark, relative to the 12043-1 surface, shall not exceed one-half Figure 13 Application of thickness tolerances to deep hubs14 BSI 12 January of the total tolerance permitted, unless stated otherwise on the agreed forging drawing.