Crushing wall of cone sand making machine composed of high manganese steel and high carbon chromium steel and production method

Abstract

The invention relates to a crushing wall of a conical sand making machine and a manufacturing method, wherein the crushing wall of the conical sand making machine is made of high manganese steel and high-carbon chromium steel, not only can meet the wear-resistant requirement of aggregate crushing, but also meets the wear-resistant requirement of rolling for sand making during a sand making process, the upper part of the crushing wall is made of the high manganese steel and the lower part of the crushing wall is made of the high-carbon chromium steel. The crushing wall provided by the invention has the advantages as follows: firstly, the crushing wall of the conical sand making machine fundamentally overcomes the critical defect of incapability of making sand due to the formation of a groove in a rolling sand making cavity, caused by small abrasion at the upper part of the crushing wall and the large abrasion at the lower part of the crushing wall since abrasion losses, caused by stones with different specifications, to the crushing wall are different during a sand making process by the crushing wall made of the single material; secondly, the abrasion loss of the high manganese steel at the upper part of the crushing wall is relatively in accordance with the abrasion loss caused by that the lower part of the high-carbon chromium steel crushing wall rolls the sand making cavity.

Description

technical field [0001] The invention relates to a cone sand making machine, which can not only meet the wear-resisting requirements of gravel crushing but also meet the wear-resistant requirements of crushing sand during the sand making process. The cone is composed of high manganese steel and high carbon chromium steel The invention discloses a crushing wall of a sand making machine and a manufacturing method thereof, which belong to the field of component assembly manufacturing of a cone sand making machine. Background technique [0002] CN102294280A, titled "High Chromium Crushing Wall and Assembly for Conical Sand Making Machine", it includes the crushing wall assembly, the material of the crushing wall is high chromium white wear-resistant cast iron, and its chromium content is greater than or equal to 9%, equal to or less than 32%. Advantages: First, the wear resistance of the broken wall is greatly improved, and its wear resistance is about 5 times that of the curren...

AI Technical Summary

Problems solved by technology

However, because the cone sand making machine has two different working states from stone crushing to sand making in the process of sand making, the upper part of the crushing wall is used for crushing stones, and the stones form impact load and contact on the upper part of the crushing wall. In addition, the stone material and the crushing wall form an indeterminate, not all-contact, impact-extruded gravel cooperation, so the wear state on the upper part of the crushing wall is relatively small; while the lower part of the crushing wall is a crushed sand part, crushing The complete contact and overlapping rolling of the small stones and the crushing wall, the small crushed stones located between the crushing wall and the rolling mortar wall are under the strong rolling of the crushing wall and the crushing wall, and the sand and gravel have a strong impact on the crushing wall (also Including rolling and grinding) wear is very serious

If a single material is used to make the crushing wall, whether it is manganese steel or high-chromium cast iron, the wear of the crushing wall is different due to the different sizes of stone materials, resulting in less wear on the upper part of the crushing wall, less wear on the middle part than on the upper part, and less wear on the lower part. The condition of the groove causes the crushing wall to wear, the feeding speed is slow, and the machine current increases, indicating that the crushing wall should be replaced, and the service life of the crushing wall is short

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