Anti-wear movable sleeve of super wear-resistant sand-making roller compaction opening of conic sand making machine and forming method

Abstract

The invention relates to an anti-wear movable sleeve of a super wear-resistant sand-making roller compaction opening of a conic sand making machine and a forming method, and adopts a technical scheme that each sand-making roller compaction opening in the conic sand making machine is formed by a high-chromium iron anti-wear movable sleeve sand-making roller compaction wall and a high-chromium iron anti-wear fixed sleeve sand-making roller compaction wall, and the hardness of the high-chromium iron anti-wear movable sleeve sand-making roller compaction wall is higher than that of the high-chromium iron at the lower part of the edge of the sand-making roller compaction opening. The anti-wear movable sleeve of the super wear-resistant sand-making roller compaction opening of the conic sand making machine and the forming method have the advantages as follows: firstly, the defects that the service lives of each entire anti-wear movable sleeve and each entire anti-wear fixed sleeve are reduced greatly, and the sand making cost is high, which are caused by that since the hardness of each sand making opening formed by one anti-wear movable sleeve and one anti-wear fixed sleeve in the existing conic sand making machine is equal to that of the corresponding anti-wear movable sleeve and the corresponding anti-wear fixed sleeve, the sand making opening is worn into a groove in advance in the sand making process, are overcome radically; secondly, as each anti-wear movable sleeve and each anti-wear fixed sleeve are casted by adopting high-frequency vibration, gas and impurities in the liquid metal are enabled to be effectively discharged out, and a metallographic structure of the high-chromium iron is also enabled to be more reasonable in distribution, and higher in density.

Description

technical field [0001] The invention relates to a sand-making mouth (longkou) which can fundamentally solve the problem of the high-chromium cast iron anti-wear movable sleeve sand-making rolling wall and the high-chromium cast iron anti-wear fixed sleeve sand-making rolling wall existing in the cone sand making machine. During the sand making process, due to the wear of the sand on the wall of the dragon mouth, the wall of the dragon mouth is ground into grooves by sand and stones, which in turn leads to a shortened service life of the entire high-chromium cast iron anti-wear moving sleeve, and the use of high-cost super wear-resistant cone sand making The invention relates to an anti-friction dynamic sleeve of a machine-made sand rolling port and a molding method, which belong to the field of component assembly manufacturing of conical sand making machines. Background technique [0002] 1. CN102352431A, titled "Quasi-differential temperature heat treatment of large high-ch...

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Problems solved by technology

[0004] The disadvantages of the above-mentioned background technology: First, it is not suitable for the heat treatment of the anti-wear moving sleeve and the anti-wear fixed sleeve in the cone sand making machine; second, the matching of the technical parameters of the heat treatment process cannot effectively improve the local hardness

[0005] 3. In the existing cone sand making machine, the anti-wear moving sleeve (broken wall) and the anti-wear fixed sleeve (rolling mortar wall) constitute the sand making mouth (longkou). The hardness of the wall is the same from top to bottom, so the wall of the sand making mouth (longkou wall) is first worn out and grooves are formed during the sand making (sand grinding) process (see attached Figure 5 ), which in turn leads to a significant shortening of the service life of the entire anti-friction moving sleeve, and the high cost of sand making

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