Steel for double-layer extrusion forming mold

Abstract

The invention provides a steel for a double-layer extrusion molding die. The double-layer extrusion mold steel of the present invention is characterized in that its chemical composition is by mass: C: 0.25% to 0.5%, Ni: 3% to 7%, Si: 1.0% to 1.5%, Al: 1.8 %~3.6%, Cu: 0.8~2.2%, Mg: 1.2~2.5%, Ti: 0.8~1.2%, Mo: 0.9~1.8%, Nb: 1.3~1.9%, Cr: 0.8~1.8%, V: 0.04 ~0.1%, Ce: 0.15~0.23%, the rest is Fe. The mold produced by the invention can withstand high extrusion strength and strong thermal deformation resistance during use.

Description

[0001] Technical field: [0002] The invention relates to a steel for a double-layer extrusion molding die, which belongs to the technical field of processing dies. [0003] Background technique: [0004] Mold, various molds and tools used in industrial production for injection molding, blow molding, extrusion, die-casting or forging forming, smelting, stamping and other methods to obtain the required products. In short, a mold is a tool used to shape an object. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article through the change of the physical state of the formed material. Known as the "Mother of Industry". [0005] Under the action of external force, the blank becomes a tool with a specific shape and size. Widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and compression molding or injection molding of en...

AI Technical Summary

Problems solved by technology

[0006] The existing mold materials are generally steel materials, but for the steel used for double-layer extrusion molding, because the interlayer between the two chambers is very thin, it must bea