A process of hot-melting inserts for cemented carbide cutter rings

Abstract

The invention discloses a hard alloy cutter ring hot-melt insert and its technology, which belongs to the technical field of hot-melt insert, and includes a cutter ring body and alloy teeth, and the cutter ring body includes a ring body, a card slot and a first inner groove , the outer surface of the annular body is provided with a plurality of annular slots, the inner wall of the slots is provided with a first inner slot, and the inner surface of the first inner slot is provided with a wide top and a narrow bottom. The first inner groove, alloy teeth are clamped and connected in the clamping groove of the ring body, and the lower bottom surface of the alloy teeth is provided with a second inner groove that is wide at the top and narrow at the bottom. The first inner groove and the second inner groove The middle of the inner tank is filled with a connecting layer. The first inner groove and the second inner groove, which are wide inside and narrow outside, are set on the inner bottom surface where the knife ring and alloy teeth are connected, and high toughness steel is filled into the inner groove to increase the connection strength, avoid brittle fracture and improve high temperature resistance.

Description

technical field [0001] The invention relates to the technical field of hot-melt inserts, in particular to a process for hot-melt inserts of cemented carbide cutter rings. Background technique [0002] Cemented carbide is widely used as cutting tool material in manufacturing industry due to its high hardness and high wear resistance. Therefore, it is widely used. The cutter ring is made of hard alloy and alloy teeth made of alloy steel are inlaid on the outer periphery of the cutter ring to form a cutter, which makes the cutter have high hardness and high wear resistance. [0003] The patent number is CN201910037171.4, which provides a hot-melt insert for a cutter wheel and a processing method. A hot-melt insert for a cutter wheel includes a cutter ring body and alloy teeth. There are even holes matching the alloy teeth, one end of the alloy teeth is welded in the holes, and the tip of the other end of the alloy teeth protrudes from the edge of the peripheral surface of the ...

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Problems solved by technology

[0003] The patent number is CN201910037171.4, which provides a hot-melt insert for a cutter wheel and a processing method. A hot-melt insert for a cutter wheel includes a cutter ring body and alloy teeth. There are even holes matching the alloy teeth, one end of the alloy teeth is welded in the holes, and the tip of the other end of the alloy teeth protrudes from the edge of the peripheral surface of the cutter ring body; the cutter ring body is made of C, Mn, Cr , Si, Mo, V, Fe, Ni; the alloy tooth is made of alloy, because the alloy tooth is pyramid-shaped, different from the existing spherical tooth, because the pyramid-shaped tip exists, the excavation position is different according to the need, so The geology is different, and the tip angle of the upper body of the alloy tooth is adjusted according to the need, so as to speed up its mining speed and avoid the problem of broken or damaged ports. The hot-melt insert is directly to the outside of the knife ring. Fill the opened holes with solder. After loading the alloy teeth, start the high-frequency welding machine. The welding port moves slowly in a circular direction around the joint between the alloy teeth and the slot, heating and melting the solder powder; resulting in a gap between the knife ring and the alloy teeth. There is a relatively stable connection only at the edge of the connection. There is almost no connection between the bottom surface of the alloy tooth and the inner wall of the hole, and the connection strength is low. Both hard alloy steel and alloy teeth are made of high-hardness alloys. The connection is made of traditional Welding method Welding will cause the tool to be brittle during high-speed rotation, and it is necessary to increase its connection toughness, and the solder at the joint between the knife ring and the alloy tooth will denature at a temperature above 600 ° C, and the high temperature resistance is poor

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