Conical sand making machine with diameter less than 2000mm rolling and pressing sand cavity assembly and method

Abstract

The invention relates to a conical sand making machine with a diameter of less than 2000mm and a rolling and compacting chamber assembly and a manufacturing method. The upper part of the rolling mortar wall is made of high manganese steel, the lower part of the rolling mortar wall is made of high carbon chromium steel; the upper part of the crushing wall is made of high manganese steel, The lower part of the crushing wall is made of high carbon chromium steel. Advantages: First, it fundamentally solves the problem of the upper part of the rolling mortar wall and the crushing wall caused by different specifications of stone materials on the rolling mortar wall and the crushing wall during the sand making process. Small wear and heavy wear in the lower part lead to the fatal defect that the shape of the rolling sand cavity forms grooves and cannot make sand; the second is that the wear amount of Mn13 in the upper part of the rolling mortar wall and the upper part of the crushing wall is the same as that of high chromium cast iron rolling. The wear amount of the lower part of the mortar wall is relatively consistent, which greatly prolongs the service life of the rolling mortar wall and the crushing wall, and greatly reduces the use cost of the rolling mortar wall and the crushing wall, and at the same time reduces the cost of sand making .

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 rolling and compacting sand during 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 wall is greatly improved, and its wear resistance is about 5 times that of the current high manganese steel rolling wall. Not only the service life is greatly exten...

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-carbon chromium steel, 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. However, when the lower part wears and forms grooves, the wall of the rolling socket is worn out and scrapped.

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