A molding tool for a suspended grinding type ore crushing component and a manufacturing method thereof

Abstract

The invention relates to a molding tool of a suspend-mill ore smashing part and a production method of the molding tool in the field of a casting process device. The molding tool of the suspend-mill ore smashing part comprises a mold core upper pattern, wherein a chiller core bar combination device is arranged at the upper side of the mold core upper pattern, the chiller core bar combination device comprises a plurality of annular core bars which are arranged in a concentric manner, the annular core bars are distributed along a conical surface in a sequence that the diameter is increased, the annular core bars are fixed by virtue of a plurality of triangular trusses which are connected with the annular core bars in a welding manner, a plurality of chillers are fixedly arranged on one side, opposite to the mold core upper pattern, of each annular core bar and each triangular truss, a plurality of supporting positioning pins are arranged on the outer circumference of the largest annular core bar, and a plurality of supporting holes corresponding to the supporting positioning pins are formed in the corresponding positions of a core box. By adopting the molding tool, the problems of the arrangement of the chiller in a casting sand mold such as inconvenience in arrangement and complexity in marking can be solved, the molding process can be simplified, and the molding efficiency and the casting quality can be improved.

Description

technical field [0001] The invention relates to the field of casting technology equipment, in particular to a molding tool of a suspension grinding ore crushing device in mining machinery and a manufacturing method thereof. Background technique [0002] The structure of main components of suspension grinding ore crushing is as follows: figure 1 As shown, there is a conical grinding surface. When working, the ore is impacted and ground with the help of grinding media to crush the ore. The use environment is harsh and the mechanical properties are high. Therefore, the product design has a large wall thickness, and the average wall thickness is generally It is larger than 100mm. At the same time, the material is mostly high-grade 500-7 ductile iron. The product has high requirements for non-destructive testing and casting is difficult. In casting, it is necessary to adjust the solidification process with chilled iron in the upper mold sand core to meet the quality and performa...

AI Technical Summary

Problems solved by technology

[0004] (1) A release agent is often used on the surface of the pattern. The commonly used release agent is a silver powder release agent. This release agent is opaque and will cover the position mark of the cold iron, making the mark lose its guiding effect; the paraffin release agent has a certain degree of transparency. However, the application operation requires high technology, high cost, and less use;

[0005] (2) The cold iron position mark on the pattern is easy to wear and needs regular maintenance, which increases production management costs;

[0006] (3) After using the chilled iron, the vibrating compaction platform cannot be used, because the chilled iron is fixed by the extrusion of the sand in the sand mold, and the vibration compaction may cause the chilled iron to shift, and it will also cause gaps around the chilled iron. The cold iron is easy to drop, and the molding sand in the gap between the cold iron and the iron can only be compacted by hand, and the compacting effect is poor;

[0007] (4) The cold iron needs to be placed by hand, and the weight should not be too large, so the volume of cast iron or steel cold iron is small, so the quantity is large, the labor intensity is high, and the production efficiency is low; the density of graphite cold iron is small, and the volume can be designed Larger graphite chills, but more recycling, management and storage issues;

[0008] (5) Since the design volume of the cold iron is limited by hand-held operation, there are many gaps between the cold iron during use, and the strength of the molding sand in the gap is difficult to guarantee, which increases the risk of sand inclusion in the casting;

[0009] (6) Since each piece of cold iron is manually placed, the quality of the cold iron fluctuates, the variety of cold iron specifications, and the skills of the operators bring more unstable factors to product quality control, which easily leads to fluctuations in casting quality, or Increased management costs

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