Two-component rolling mortar wall and method for conical 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 and a two-component rolling cone sand making machine which can meet the wear-resistant requirements for crushing crushed stones and meet the wear-resistant requirements for crushing sand during the sand making process. The mortar wall and its manufacturing method are as follows: the upper part of the rolled mortar wall is made of high manganese steel, and the lower part of the rolled mortar wall is made of high carbon chromium steel. Advantages: First, it fundamentally solves the problem that the upper part of the rolling mortar wall wears less and the lower part of the rolling mortar wall wears less due to different specifications of stones on the rolling mortar wall during the sand making process. The fatal flaw of the sand-pressing chamber is that grooves are formed in the shape of the rolling-pressed sand chamber; the second is that the wear amount of the high-manganese steel on the upper part of the rolling mortar wall when crushing stones is different from that of the high-carbon chromium steel rolling-mortar wall on the lower part of the sand-pressing chamber. The amount of wear is relatively consistent, so it fundamentally solves the situation that the groove caused by the wear amount of the lower part of the rolling mortar wall is greater than the wear amount of the upper part of the rolling mortar wall during the sand rolling process of the single material rolling mortar wall.

Description

technical field [0001] The invention relates to a conical sand making machine with a diameter of less than 2000mm and a two-component rolling cone sand making machine which can meet the wear-resistant requirements for crushing crushed stones and meet the wear-resistant requirements for crushing sand during the sand making process. The mortar wall and its manufacturing method belong to the field of assembly manufacturing of conical 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 curre...

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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