Abstract
The article describes the results of theoretical and experimental studies of a new method of stamping with regulated heating of workpiece to a predetermined temperature and its subsequent deformation by bilateral exposure of combustion products of gas mixtures. The authors demonstrated the possibility of heating the formed preform directly into the die cavity until the hot working temperature range. At this time, heating of the billet is less than 1 s, and the pressure of the combustible gas mixture depending on the material and thickness of the preform is 0.5 ... 2.0 MPa. The dependences of the parameters are determined for the calculation of the stamping process. Experimental studies have shown that this method by heating the workpiece creates favorable conditions for its deformation. This provides stamping parts with complex shapes in a single technological transition, using relatively simple die tooling, signifi cantly reduces the cost of the stamped parts. Due to this and the low cost of the used equipment, this method of stamping can fi nd effective application in industrial production.
Highlights
The authors demonstrated the possibility of heating the formed preform directly into the die cavity until the hot working temperature range. At this time, heating of the billet is less than 1 s, and the pressure of the combustible gas mixture depending on the material and thickness of the preform is 0.5 ... 2.0 MPa
The dependences of the parameters are determined for the calculation of the stamping process
Experimental studies have shown that this method by heating the workpiece creates favorable conditions for its deformation
Summary
Ɉɪɢ ɷɬɨɦ ɜɪɟɦɹ ɧɚɝɪɟɜɚ ɡɚɝɨɬɨɜɤɢ ɫɨɫɬɚɜɥɹɟɬ ɦɟɧɟɟ 1 ɫ, ɚ ɞɚɜɥɟɧɢɟ ɝɨɪɸɱɟɣ ɝɚɡɨɜɨɣ ɫɦɟɫɢ ɜ ɡɚɜɢɫɢɦɨɫɬɢ ɨɬ ɦɚɬɟɪɢɚɥɚ ɢ ɬɨɥɳɢɧɵ ɡɚɝɨɬɨɜɤɢ – 0,5 – 2,0 Ɇɉɚ. Ɗɤɫɩɟɪɢɦɟɧɬɚɥɶɧɵɟ ɢɫɫɥɟɞɨɜɚɧɢɹ ɩɨɤɚɡɚɥɢ, ɱɬɨ ɩɪɢ ɞɚɧɧɨɦ ɦɟɬɨɞɟ ɡɚ ɫɱɟɬ ɧɚɝɪɟɜɚ ɡɚɝɨɬɨɜɤɢ ɫɨɡɞɚɸɬɫɹ ɛɥɚɝɨɩɪɢɹɬɧɵɟ ɭɫɥɨɜɢɹ ɞɥɹ ɟɟ ɞɟɮɨɪɦɢɪɨɜɚɧɢɹ. Ɉɪɢ ɷɬɨɦ ɭɫɬɚɧɨɜɥɟɧɨ, ɱɬɨ ɜɫɥɟɞɫɬɜɢɟ ɜɵɫɨɤɨɣ ɢɧɬɟɧɫɢɜɧɨɫɬɢ ɧɚɝɪɟɜɚ, ɬɟɦɩɟɪɚɬɭɪɚ ɩɨ ɬɨɥɳɢɧɟ ɥɢɫɬɨɜɨɣ ɡɚɝɨɬɨɜɤɢ ɫɭɳɟɫɬɜɟɧɧɨ ɧɟ ɢɡɦɟɧɹɟɬɫɹ, ɬ. 2 ɜɢɞɧɨ, ɱɬɨ ɬɟɦɩɟɪɚɬɭɪɚ ɡɚɝɨɬɨɜɤɢ ɫɭɳɟɫɬɜɟɧɧɨ ɡɚɜɢɫɢɬ ɨɬ ɞɚɜɥɟɧɢɹ ɬɨɩɥɢɜɧɨɣ ɫɦɟɫɢ, ɫ ɪɨɫɬɨɦ ɞɚɜɥɟɧɢɹ ɢɧɬɟɧɫɢɜɧɨɫɬɶ ɟɟ ɧɚɝɪɟɜɚ ɭɜɟɥɢɱɢɜɚɟɬɫɹ.
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