Crushing wall of cone sand making machine with diameter less than 2000mm and manufacturing method

Abstract

The invention relates to a cone sand maker crushing wall being smaller than 2000 mm in diameter and a manufacturing method, and aims to meet not only the abrasion-resistant requirement of stone crushing but also the abrasion-resistant requirement of rolling-based sand making during a sand making process. The upper part and the lower part of the cone sand maker crushing wall are made of Mn13 and high-chromium iron respectively. The cone sand maker crushing wall has the following advantages: (1) the fatal defect that sand making cannot be performed during the sand making process because a single material (either manganese steel or high-chromium iron) rolling mortar wall suffers different abrasion losses from different sized stones, the upper part of the single material rolling mortar wall is slightly abraded while the lower part thereof is seriously abraded, and a groove is formed in a rolling-based sand making cavity can be fundamentally overcome; (2) the abrasion loss caused by Mn13 at the upper part of the cone sand maker crushing wall during the stone crushing process is relatively consistent with that of the rolling-based sand making cavity in the high-chromium iron lower part of the cone sand maker crushing wall.

Description

technical field [0001] The invention relates to a cone sand making machine with a diameter of less than 2000 mm, which can not only meet the wear-resistant requirements for crushing crushed stones, but also meet the wear-resistant requirements for crushing sand during the sand making process, and its production. The method belongs to the field of component assembly manufacturing of conical sand making machines. Background technique [0002] CN102294280A, titled "High Chromium Crushing Wall and Assembly for Conical Sand Making Machine", it includes the crushing wall assembly, the material of the crushing 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 broken wall is greatly improved, and its wear resistance is about 5 times that of the current high manganese steel broken wall. Not only the service life is greatly extended, but the user's use...

AI Technical Summary

Problems solved by technology

However, because the cone sand making machine has two different working states from stone crushing to sand making in the process of sand making, the upper part of the crushing wall is used for crushing stones, and the stones form impact load and contact on the upper part of the crushing wall. In addition, the stone material and the crushing wall form an indeterminate, not all-contact, impact-extruded gravel cooperation, so the wear state on the upper part of the crushing wall is relatively small; while the lower part of the crushing wall is a crushed sand part, crushing The complete contact and overlapping rolling of the small stones and the crushing wall, the small crushed stones located between the crushing wall and the rolling mortar wall are under the strong rolling of the crushing wall and the crushing wall, and the sand and gravel have a strong impact on the crushing wall (also Including rolling and grinding) wear is very serious

If a single material is used to make the crushing wall, whether it is manganese steel or high-chromium cast iron, the wear of the crushing wall is different due to the different sizes of stone materials, resulting in less wear on the upper part of the crushing wall, less wear on the middle part than on the upper part, and less wear on the lower part. The condition of the groove causes the crushing wall to wear, the feeding speed is slow, and the machine current increases, indicating that the crushing wall should be replaced, and the service life of the crushing wall is short

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