Conical sand making machine rolling cavity assembly and method composed of mn13 and high chromium cast iron

Abstract

The invention relates to a conical sand making machine rolling cavity assembly made of Mn13 and high-chromium cast iron and a making method, the conical sand making machine rolling cavity assembly can not only meet the wear-resisting requirement of gravel crushing, but also can meet the wear-resisting requirement of rolling and sand making during the process of sand making by using a conical sand making machine. The upper part of a rolling wall is made of Mn13, the lower part of the rolling wall is made of high-chromium cast iron, and the upper part of the rolling wall and the lower part of the rolling wall are in concave-convex casting matching; the upper part of a crushing wall is made of Mn13, the lower part of the crushing wall is made of high-chromium cast iron, and the upper part of the crushing wall and the lower part of the crushing wall fit are in concave-convex casting matching. The conical sand making machine rolling cavity assembly made of Mn13 and high-chromium cast iron and the making method have the advantages as follows: the critical defect that sand making cannot be carried out due to the fact a groove is formed in a rolling and sand making cavity is fundamentally overcome, the defect is caused by the fact that little wear is produced at the upper parts of the rolling wall and the crushing wall and serious wear is produced at the lower parts of the rolling wall and the crushing wall, because stones with different specifications have different wearing capacities on the rolling wall and the crushing wall; besides, the wearing capacities of the upper parts of the rolling wall and the crushing wall made of Mn13 during stone crushing is in relative consistent with that of the lower part of the crushing wall made of high-chromium cast iron when rolling a sand making cavity.

Description

technical field [0001] The invention relates to a conical sand making machine which is composed of Mn13 and high chromium cast iron, which can not only meet the wear-resisting requirements of gravel crushing but also meet the wear-resistant requirements of rolling sand during the sand-making process. A rolling chamber assembly and a manufacturing method thereof belong to the field of manufacturing parts assembly of a cone sand making machine. 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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