Rolling sand chamber assembly and method of cone sand making machine with diameter less than 2000mm

Abstract

The invention relates to a conical sand making machine with a diameter of less than 2000mm which can meet the wear resistance requirements of crushed stone and the wear resistance requirements of rolling sand during the sand making process. The assembly and the manufacturing method include a rolling mortar wall and a crushing wall, the upper part of the rolling mortar wall is made of Mn13, the lower part of the rolling mortar wall is made of high-chromium cast iron; the upper part of the broken wall is made of Mn13, and the lower part of the broken wall is made of high-chromium cast iron. Advantages: First, in the sand making process of single material rolling mortar wall and crushing wall, due to the different wear of different specifications of stone on the rolling mortar wall and crushing wall, the wear of the rolling mortar wall and the upper part of the crushing wall is small, The fatal defect of rolling sand cavity to form grooves and unable to make sand due to the large wear of the lower part; the second is that the wear amount of Mn13 on the upper part of the rolling mortar wall and the crushing wall in the crushed stone is the same as that of the high chromium cast iron in the lower part of the rolling mortar wall. The wear amount of the crushed sand cavity is relatively consistent, which greatly prolongs the service life of the rolling mortar wall and the crushing wall.

Description

technical field [0001] The invention relates to a conical sand making machine, which can meet the wear-resisting requirements for crushing crushed stones and meet the wear-resisting requirements for crushing and compacting sand in the sand-making process. The assembly and the manufacturing method belong to the field of assembly manufacturing of cone sand making machine components. 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 rolling mortar wall. Not only the service life is greatly extended, ...

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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