Rolling cavity assembly and method of conical sand making machine composed of mn13 and high carbon chromium steel

Abstract

The invention relates to a rolling cavity assembly of a conical sand making machine and a manufacturing method, wherein the rolling cavity assembly of the conical sand making machine is made of Mn13 and high-carbon chromium steel, not only can meet the wear-resistant requirement of aggregate crushing, but also can meet the wear-resistant requirement of rolling for sand making during a sand making process, the upper part of a rolling mortar wall is made of Mn13, the lower part of the rolling mortar wall is made of the high-carbon chromium steel, and the upper part of the rolling mortar wall and the lower part of the rolling mortar wall are in concave-convex casting matching; the upper part of a crushing wall is made of the Mn13 and the lower part of the crushing wall is made of the high-carbon chromium steel, and the upper part of the crushing wall and the lower part of the crushing wall are in concave-convex casting matching. The rolling cavity assembly provided by the invention has the advantages as follows: firstly, the rolling cavity assembly overcomes the critical defect of incapability of making sand due to the formation of a groove formed by rolling a sand making cavity since the abrasion at the upper part of the rolling mortar wall and the crushing wall is small and the abrasion at the lower part of the rolling mortar wall and the crushing wall is large due to different abrasion losses, caused by stones with different specifications to the crushing wall during the sand making process by the rolling mortar wall and the crushing wall made of the single material ; secondly, the abrasion losses, produced during stone crushing, by Mn13 at the upper parts of the rolling mortar wall and the crushing wall, is relatively in accordance with the abrasion loss caused by that the lower part of the high-carbon chromium steel rolling mortar wall rolls the sand making cavity.

Description

technical field [0001] The invention relates to a conical sand making machine which is composed of Mn13 and high-carbon chromium steel, which can meet the wear-resisting requirements of crushing crushed stones and meet the wear-resistant requirements of rolling sand during the sand-making process. The machine rolling chamber assembly and its manufacturing method belong to the field of cone sand making machine component assembly manufacturing. Background technique [0002] CN102350388A, the name "high chromium rolling mortar wall assembly for conical sand making machine", it includes the rolling mortar wall assembly, and it is characterized in that: the material of the rolling mortar 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 rolling mortar wall is greatly improved, and its wear resistance is about 5 times that of the current Mn13 rolli...

AI Technical Summary

Problems solved by technology

However, due to the two different working states of the cone sand making machine from stone crushing to sand making in the process of sand making, the upper part of the rolling mortar wall is used for crushing stone materials, and the impact load formed by the stone materials on the upper part of the rolling mortar wall And contact extrusion, and the stone material and the wall of the rolling mortar are indeterminate, not all contact crushed crushed stones, so the wear state of the upper part of the wall of the rolling mortar is relatively small; while the lower part of the wall of the rolling mortar is rolling. In the sand making part, the crushed stones are completely contacted and overlapped with the mortar wall, and the crushed stones located between the mortar wall and the crushing wall are under the strong rolling of the mortar wall and the crushing wall. Sand and gravel are very serious in wearing and tearing the rolling mill (including the broken wall)

If a single material is used to make the wall of the mortar, no matter it is manganese steel or high-chromium cast iron, the wear amount of the stone of different specifications on the wall of the mortar is different, and the wear of the upper part of the wall of the mortar is small, and the wear of the middle part is smaller than that of the upper part. The situation where the lower part wears and forms a groove, which causes the wall of the rolling socket to be worn and scrapped

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