Cutting ring, its manufacturing method and concrete pumping equipment

Abstract

The invention discloses a cutting ring, a manufacturing method of the cutting ring and concrete pumping equipment. The cutting ring comprises a cutting ring substrate (1) and a first build-up welding layer (4) which is arranged on the outer circumferential surface of the cutting ring substrate (1). A first groove (3) is formed in the outer circumferential surface of the cutting ring substrate (1). The first build-up welding layer (4) comprises a first part (11) and a second part (12), wherein the first part (11) is arranged at the position of the first groove (3), and the second part (12) is arranged on the portion, where the first groove (3) is not located, of the outer circumferential surface of the cutting ring substrate (1). The concrete pumping equipment comprises the cutting ring. According to the cutting ring, the manufacturing method of the cutting ring and the concrete pumping equipment, the first build-up welding layer on the outer circumferential surface of the cutting ring and the cutting ring substrate are high in combination strength, cannot fall off easily, and large in local thickness. Therefore, the abrasive resistance of the cutting ring is enhanced, and the service life of the cutting ring is prolonged.

Description

technical field [0001] The present invention relates to concrete pumping equipment, in particular to a cutting ring for concrete pumping equipment and a method of manufacturing the same. Background technique [0002] The continuous pumping of concrete is formed by the cutting ring cutting off the concrete column quickly on the spectacle plate. Therefore, the cutting edge of the cutting ring is easily damaged, resulting in the cutting ring being the concrete pumping equipment (such as concrete pump, concrete pump truck, etc.) wearing parts on the In order to prevent damage to the cutting edge of the cutting ring, the technology currently used is to weld a wear-resistant ring made of hard alloy on the working end surface of the cutting ring, and form a wear-resistant surfacing layer by surfacing. For example, in figure 1 In the cutting ring shown, the end surface of the cutting ring base 1 (the upper surface of the cutting ring base 1 in the drawings) is formed with a wear-r...

AI Technical Summary

Problems solved by technology

Since the wear resistance of the surfacing layer is much lower than that of cemented carbide, usually there is a difference of more than 4 times, the surfacing layer is usually worn away first, exposing the cutting ring matrix, causing the cutting ring to fail as a whole soon, but at this time The wear amount of the wear-resistant ring is not large, resulting in a certain waste; increasing the thickness of the surfacing layer can enhance the wear resistance of the cutting ring, but the surfacing layer is too thick to easily produce cracks, and the poor combination with the cutting ring matrix is ​​easy to peel off

At present, there is also a way of setting the wear-resistant ring made of hard alloy on the inner circumferential surface, outer circumferential surface and end surface of the cutting ring base to prolong the life of the cutting ring. However, in this way, hard alloy is used The large quantity leads to high cost, and the cemented carbide is fixed on the cutting ring base by welding technology, and the tendency of welding embrittlement is serious

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