Technique method for improving density of injection molding high-speed steel columnar deposition blank

Abstract

The invention relates to a technique method used for raising the density of a steel-column shaped sediment blank of a spray-forming high-speed tool and belongs to the technical field of material processing. The invention thoroughly combines the theory idea and the technical advantage of spray-forming and heat-control concretion. In an early phase of the spray sediment process, the advantages of the spray-forming that an equiaxed grain (less than 20Mum) having no segregation but a uniform and thin structure can be manufactured in a short process can be performed, and then the manufactured high-speed steel sediment blank has high strength, better plasticity and easy-forging capability. In a later phase of the sediment process, i.e. after the spray-forming is finished, the structure of a main body of equipment (such as a tundish and an atomizing sprayer, etc.) is adopted to control output and radiation of the heat. The invention enhances solidification of easy-loosening part of the high-speed steel sediment blank, so as to manufacture high quality and high density sediment blank. The technique not only can solve the segregation of the high-speed steel but also further enhance the density of the sediment blank to guarantee a following smooth process of fine-forging, etc.

Description

technical field [0001] The invention belongs to the field of material processing, and relates to a process method for increasing the density of a spray-formed high-speed tool steel columnar deposition green body. Background technique [0002] The background technology of this process is spray forming technology and thermal control solidification theory. [0003] Spray Forming is an advanced process developed in recent years to prepare high-performance materials by rapid solidification. This technology integrates material-process-parts. organization, opening up a new way to prepare advanced materials. At present, high-temperature alloys, titanium alloys, and ultra-high-strength steels, which are widely used in high-tech fields, are difficult-to-machine materials, and require high dimensional accuracy of the prepared parts, which makes the cutting tools (including hobs, milling cutters, gear shapers and The performance requirements of broaches, etc.) are very strict. Therefo...

AI Technical Summary

Problems solved by technology

Due to its unique thermal control solidification method, it solves the problems of filling, feeding, deformation and cracking of castings, and has high application value, but the details of this process are strictly kept secret.