Interlayer carcass material and preparation method of diamond tool bit

Abstract

The invention discloses an interlayer carcass material and a preparation method of a diamond tool bit, and belongs to the field of stone cutting. The interlayer carcass material comprises, in percentage by mass, 85-65% of Fe, 8-15% of Zn, 5-20% of Cu and 2-5% of ALSi. According to the preparation method, the interlayer carcass material, a first working layer mixture and a second working layer mixture are respectively loaded into corresponding hoppers; and the first working layer mixture is fed into a mold cavity, then the interlayer carcass material and the second working layer mixture are fedinto the mold cavity respectively and repeatedly, the pre-pressure every time is 50-100KG / cm<2> higher than the last pre-pressure, demolding and sintering are conducted, and the needed diamond tool bit is obtained. The interlayer carcass material has the advantages that coarse-grained elemental Fe powder is adopted, the powder is small in specific surface area and higher in oxidation resistance,and when the powder is applied to a multi-layer full-automatic cold press, the labor and material cost can be greatly reduced while the efficiency is improved, good sintering performance is kept, goodsintering density is obtained, good strength is obtained, and the material can effectively adapt to the abrasion speed of a tool bit working layer.

Description

technical field [0001] The invention relates to the field of stone cutting tools, in particular to a method for preparing an interlayer carcass material and a diamond cutter head. Background technique [0002] The traditional diamond cutter head is composed of a working layer and an iron sheet interlayer. The production process is to manually superimpose the working layer and the iron sheet into a graphite mold, and then sinter it. Although the cutter head produced by this process has a sharpness It has made great progress, but it needs to invest a lot of labor costs. With the fierce competition of products and the increase of labor costs, it has promoted the automation and intelligent development of equipment, and multi-layer automatic cold presses have also emerged at the historic moment. It It can automatically realize multi-layer cold pressing, reduce the cost of cold pressing and the cost of billet loading and sintering in the later stage, but the traditional iron sheet...

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Problems solved by technology

[0002] The traditional diamond cutter head is composed of a working layer and an iron sheet interlayer. The production process is to manually superimpose the working layer and the iron sheet into a graphite mold, and then sinter it. Although the cutter head produced by this process has a sharpness It has made great progress, but it needs to invest a lot of labor costs. With the fierce competition of products and the increase of labor costs, it has promoted the automation and intelligent development of equipment, and multi-layer automatic cold presses have also emerged at the historic moment. It It can automatically realize multi-layer cold pressing, reduce the cost of cold pressing and the cost of billet loading and sintering in the later stage, but the traditional iron sheet interlayer is incompressible and cannot be used for multi-layer automatic cold pressing equipment, so the powder interlayer of diamond cutter head is used It is imminent to replace the iron sheet compartment

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