Ultrathin hard alloy tool bit structure with center partition

Abstract

The invention discloses an ultrathin hard alloy tool bit structure with a center partition. The ultrathin hard alloy tool bit structure comprises an even number of hard alloy tool bit layers, a graphite mold center partition layer is arranged between the two middlemost adjacent hard alloy tool bit layers, and graphite mold pressing heads are arranged on the outer sides of the two outermost hard alloy tool bit layers. Compared with the prior art, the ultrathin hard alloy tool bit structure has the advantages that the structure is simple, implementation is convenient, the center partition layer is used for avoiding a center point high-temperature area of a graphite mold, the center partition layer adopts a graphite material with higher density, erosion of center high temperature to a center layer tool bit is effectively avoided, the center layer is removed, the center point of the sintered and fired hard alloy tool bit is burnt blue, the sintering stability of the hard alloy tool bit is greatly improved, the alloying degree is more uniform and higher, and the optimal and most reasonable hardness of the hard alloy tool bit is guaranteed. Good market popularization value is realized.

Description

technical field [0001] The invention relates to the technical field of making metal cutting tools, in particular to an ultra-thin cemented carbide cutter head structure with a central partition. Background technique [0002] Ultra-thin (thickness below 4.0) carbide cutter head, the 6-layer mold used for production is popular in the market at present, the biggest advantage is to increase the output on the basis of the traditional two-layer mold and 4-layer mold, and the six-layer mold is improving At the same time as the output, it also has fatal flaws. Due to the design of the number of layers in the infrared temperature measuring hole of the six-layer mold, the temperature at the center point is too high, resulting in the blue marks of over-sintering on the heads of many high-melting point-to-head formulas, and most of them are concentrated in the center position. The blue scorched alloy cutter head is the embodiment of over-sintering. The quality of such a cemented carbid...

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Problems solved by technology

Due to the design of the number of layers in the infrared temperature measuring hole of the six-layer mold, the temperature at the center point is too high, resulting in the blue marks of over-sintering on the heads of many high-melting point-to-head formulas, and most of them are concentrated in the center position. The blue scorched alloy cutter head is the embodiment of over-sintering. The quality of such a cemented carbide cutter head is unstable, and the alloy hardness of the cutter head is uneven. It is easy to cause the center hardness of the cutter head to be too high, which seriously affects the cutting quality of the alloy cutter head.

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