Method for Arc Fuse Additive Manufacture of Die Steel Components Containing Conformal Cooling Inner Runner

Abstract

The invention discloses a method for manufacturing a mold steel member of an inner flow channel with conformal cooling by arc fuse, and relates to the technology of arc fuse additive manufacturing. Using cold metal transition welding technology, arc fuse additive deposition is first performed on the position of the inner surface of the inner runner on the surface of the steel component substrate with conformal cooling inner runner, and then the inner runner cover is covered on the inner surface of the inner runner The port just covers the upper port, and then the rest of the inner runner is manufactured, so that the rest of the inner runner is not lower than the upper port of the inner surface layer; the layer on the inner surface of the inner runner adopts a relatively small small heat input process parameter Deposition is carried out, and the remaining layers outside the inner flow channel are deposited using relatively large large heat input process parameters. The arc deposition process of the present invention is stable, there is no flow and collapse of the molten pool, good metallurgical bonding between layers and channels, high precision of the surface layer, and non-destructive testing results show that there are no defects such as cracks or lack of fusion.

Description

technical field [0001] The invention relates to an arc fuse additive manufacturing technology, in particular to a method for manufacturing a mold steel component with a conformal cooling inner runner by using an arc fuse additive. Background technique [0002] Traditional H13 hot work die steel components are first made of equal material manufacturing technology (casting and forging, etc.), and then formed by subtractive manufacturing technology (turning, milling, planing, etc.). +Plastic deformation” process has the disadvantages of large processing volume, low material utilization rate, long production cycle and high cost in mold production. Moreover, due to the high performance requirements of the mold, the complex geometric (inner cavity) structure, the difficulty of material deformation, and the need for multi-process cooperation, it has brought great difficulties to the traditional manufacturing process. In addition, extremely serious waste is caused due to low utiliz...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: aiming at the problem that the existing cooling mold can only be prepared by straight-line drilling to obtain a mesh-like intersecting inner flow channel, a method of using arc fuse additives to manufacture internal flow channels is proposed. This method solves the problems of slow cooling speed, uneven heat distribution, and even warping sink marks in hot spots due to serious heat accumulation in traditional molds.

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