The cross-arm fittings support the function of the cable and the stabilizing cable in the overhead line. The lightning-proof insulator adopts a special puncture structure to penetrate the wire insulation layer installed in the wire slot to form an electrical connection; a unique arc ignition fork The bolt is connected to the upper end of the insulator and the other end is the discharge end and is installed. The ground electrode at the lower end of the insulator forms a discharge gap; the insulating cover surrounds all exposed portions of the upper end of the insulator, except for the discharge end of the arc discharge fork.
Gold emperor cross-arms forgings visual inspection criteria
1. Forgings are inspected by scribing. On the basis of the size of the finished drawing, in addition to the single-face 10mm quenching allowance, it can still be guaranteed that the machining allowance of 5mm or more (including 5mm) on one side can be judged as qualified products (below 4.5 .6. Except in case).
2. The user’s drawings have been left with quenching allowance or determined forgings that do not require quenching and tempering. On the basis of the drawing size, it is guaranteed that the machining allowance of 5mm or more (including 5mm) on one side can be judged as qualified products (4.5.6 below). Except for the situation).
3. If the requirements of Articles 1 and 2 are not met, the Quality Assurance Department shall report the inspection status to the technical department, and the technical department shall make judgments based on the situation to determine whether to accept/trial/consult use/rework/revision/discontinuation. If you need to negotiate with the user, the marketing department will assist you.
4, although in accordance with the provisions of 1, 2, but the appearance quality of forgings is indeed poor (such as severe bending, a large number of hammer printing, serious material pits, serious eccentricity, shaft body is not round, etc.) to cause greater difficulty for subsequent processing , according to the judgment of performance appraisal.
5. For flanged workpieces such as fan shafts, the flange inclination amount is allowed to be ΔL≤25mm (when the line is not adjusted), although there is machining allowance, the performance evaluation is performed beyond the allowable tilt range.
6. For the fan spindle product, the flange thickness is controlled within the range of +25mm forging process. Exceeding the scope of the judgment and performance appraisal.
7. Strictly control the quality during the forging process. For forgings with flange flash, it is required to clean in time when the workpiece is in the hot state by forging or gas cutting. The height of the flange of the flange after the forging blank is released is less than 20mm, otherwise the performance appraisal shall be carried out according to the judgment.