Metal hot extrusion formability judging method

Abstract

The invention discloses a method for judging the hot extrusion formability of comparative metals. It selects an alloy from the alloys participating in the comparison and extrudes it under constant temperature and constant speed conditions within a specified time to obtain the alloy to achieve continuous extrusion. The minimum extrusion force of extrusion, and with this extrusion force as a starting point, is extruded under constant temperature conditions to obtain the common minimum extrusion force of all alloys participating in the comparison to achieve continuous extrusion within a specified time, and use this as a constant Extrusion force, and then on the simulation test extrusion device, carry out constant temperature and constant force extrusion on the samples of various alloys participating in the comparison, and obtain the extrusion stroke and extrusion time of various alloys under the state of constant temperature and constant force. Relationship curve, through comparison to obtain the metal hot extrusion forming properties of various alloys.

Description

technical field [0001] The invention relates to a method for judging the extrusion formability of metals, in particular to a method for judging the hot extrusion formability of metals. Background technique [0002] In industrial production, since there are certain differences in the metal formability of alloys with different chemical compositions or alloys with the same composition but undergoing different process states, it is possible to compare the metal hot deformation formability of different alloys or the same alloy undergoing different process states. It is of great significance to provide optimization basis for alloy composition design, heat treatment process before extrusion forming and extrusion forming process formulation. [0003] When comparing the plastic deformation formability of different alloys or the same alloy undergoing different process states, the speed of plastic forming and product quality under the same conditions are usually used to compare its for...

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Problems solved by technology

However, the maximum extrusion force of the positive extrusion deformation process is greatly affected by the shape of the die, which cannot fully reflect the difference in hot extrusion formability between different alloys or the same alloy undergoing different process states, and also affects the metal extrusion production process. Optimization formulation

How can we compare the differences in extrusion formability of different alloys or the same alloys undergoing different process states more comprehensively and accurately through simulation tests under the condition of low cost and high efficiency, so as to provide a basis for the composition design of alloys, heat treatment before extrusion The formulation of process and extrusion forming process provides an optimization basis, which has always been a problem that people want to solve but has not yet been solved.

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