SU1611533A1 - Method of hot die forging of parts - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to methods for producing parts by hot-die forging. The purpose of the invention is to improve the quality of the parts, productivity and reduce the complexity of the process of manufacturing parts. The original bar cylindrical billet is sequentially deformed by draft, preliminary and final stamping. The stamped forging with a burr is subjected to dressing - calibration, at the same time a notch is cut at 85-95% of its thickness, after which the sheet is finally separated from the forging. 7 il.

Description

The invention relates to the field of metal processing by pressure, in particular, to methods of hot-layer stamping on automated complexes based on mechanical mountains of stamping presses with clamshell feeders.

The purpose of the invention is to improve the quality of the parts, productivity and reduce the complexity of the process of manufacturing parts.

FIG. 1 shows a device for implementing the sect., Obeshii view; in fig. 2 - initial blank; in fig. 3 - stocking after precipitation; in fig. 4 - forging after pre-stamping; in fig. 5 same, after final stamping; in fig. b - the same, after editing-calibration, combined with a notch of a length; in fig. 7 - the part is ready after trimming around.

The method is carried out as follows.

The initial cylindrical billet (Fig. 2) is sequentially deformed at the processing positions of the device (Fig. 1) by upsetting, preliminary and final stamping, and after the final forging of the forging, the operation is performed on its correcting and calibration, at the same time making an incision at 85-90 % of its thickness, after which the final separation of the forgings is performed and the finished part is obtained. Combining the operations of calibration-calibration of forgings with a notch oblo excludes its warping during subsequent trimming oblo. The minimum degree of incision of the forging is 85% of its thickness, adopted from the condition that the forging is not warped during the final cutting of the forging. The maximum degree of cutting of the rip - 95% of its thickness - is due to the need to transfer the forging to and between the streams of the device and excludes the possibility

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detachment from the forgings during the application of the force during the transfer.

Example. On the automated complex AKKB 8042.01, on the basis of a KGSP, with a force of 1600 ton-force, a part was stamped (crank cheek), which was an asymmetrical flange with a rod. Punching of the hemline heated to 1200 ° C was carried out in two transitions — sediment and punching in the final stamp, followed by over-cutting, and correction-calibration, in a combined punching and trimming. whether on one complex AKKB 8042.01. The magnitude of the preliminary: incision was about 2.6 mm with a thickness of about 3.0 mm. The value of over-cutting was varied within 2.6 ±:; ± 0.2 mm depending on the temperature and

masses of deformable workpieces, as well as the number of positions at which processing is carried out simultaneously.

Claims (1)

Invention Formula The method of hot volumetric stamping of parts, consisting in successive deforming of a heated billet by preliminary and final stamping and obtaining forgings with scrap, as well as subsequent trimming of scrap and correction-calibration of forgings, characterized in that straightening-calibration of the forging is performed by cutting it at 85 ... 95% of its thickness, after which the final cutting is performed at the scrap. FB / W. / Phage. 2 FIG. five FIG. FIG. five eza 6 FIG. 7