BS EN 10360:2015 pdf download – Hot, warm or cold forging — Repair conditions prior to delivery
This European Standard defines the forged components surface repair conditions and control to preserve their functionality.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
functionality of forging
set of properties and characteristics of a workpiece/component that provides it with the capability of complying with the specified requirements
set of operations carried out in order to remove detected surface defects
prohibited repair area
area of a workpiece/component where the repair is not permitted
discontinuity identified as not affecting the function of the workpiece/component, which may be left without repair 
discontinuity identified as affecting the workpiece/component function which shall be repaired 
3 Prohibited repair areas
The prohibited repair areas shall be specified by the purchaser, at time of enquiry and order.
Supplementary prohibited areas, which can be defined as consequence of the manufacturing process, shall be agreed between manufacturer and purchaser at time of enquiry and order.
4 Removal of surface imperfections
Surface imperfections shall be removed only by request of the purchaser. In case of agreement, the removal procedure shall be the same as for surface defects.
5 Removal of surface defects
5.1 Surface defects removal method
Surface defects shall be removed by grinding, scraping, polishing, chipping, machining or by any other process that preserves the workpiece/component functionality.
Surface defects shall be removed by welding or powder metallurgy only with the agreement of the purchaser.
The equipment used to remove the surface defects shall be suitable for the grade of the material, the location,
the surface defect form and the workpiece/component geometry.
The manufacturer shall develop the method to avoid masking the imperfections and increasing the repairs.
If applicable, the processing should be carried out by successive passes perpendicular to surface defect direction.
Following agreement between the purchaser and the manufacturer, the repaired area of the workpiece/component can be retested by the original non-destructive testing (NDT) method
5.2 Surface condition of the repaired area
In the repaired area, the surface shall not be altered by an excessive temperature rise and by the presence of sharp edges, chatter marks or grooves. Pits may remain after repair; their surface should remain in the continuity of the vicinity surface of the workpiece.
5.3 Operations carried out after the surface defects removal
Upon agreement between the purchaser and the manufacturer, an operation which ensures the surface properties similar to those preceding repair can be carried out on the repaired area of the
workpiece/component (e.g. shot-blasting, etc.)
If, at time of enquiry and order, no agreement has been made between manufacturer and purchaser, the operation is left at the discretion of manufacturer.
5.4 Acceptance rules for the repair process
After repair, the surface of the workpiece/forged component shall fulfil the specified tolerances.
Surface tolerances shall be agreed at time of enquiry and in accordance with published standards, e.g. for the hot closed die steel forgings with EN 10243-1 or EN 10243-2, unless otherwise specified.
If the repaired workpiece/component does not fulfil the specified tolerances, a new agreement may be done between the purchaser and manufacturer.
6 Operator training
The manufacturer shall take any necessary measures to train, qualify and follow up the operators entitled to perform the repair operation.BS EN 10360 pdf download.