Casting technology method for compression molding machine body

A casting process and technology of a compression molding machine, which is applied in the field of casting technology of the compression molding machine itself, can solve the problems of high cost, long wood mold production cycle, easy generation of shrinkage porosity, etc., and achieve improved wear resistance and impact resistance, saving Production cycle, the effect of saving production costs

Active Publication Date: 2015-07-08
黄石新兴管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of long production period and high cost of wooden molds, but the castings produced by the current resin sand full mold casting process are seriously stuck to sand, prone to shrinkage, slag inclusion on the surface, blocked holes that cannot be cleaned, etc., providing A casting process method of the compression molding machine

Method used

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  • Casting technology method for compression molding machine body
  • Casting technology method for compression molding machine body
  • Casting technology method for compression molding machine body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1-5 , the present invention comprises the following steps:

[0022] (1) Foam model production: Add 0.92% shrinkage rate and 12mm machining allowance on the basis of the part drawing to make a three-dimensional map of the foam model, and divide it into 12 modules according to the structural characteristics of the compression molding machine. The polystyrene foam board with a density of 19g / l is cut into modules by CNC engraving and electric heating wire cutting, and the modules are bonded and assembled into a model. The foam model 1 is consistent with the shape of the casting of the compression molding machine , the structure is exactly the same;

[0023] (2) Production of special foam tire mould: the polystyrene foam board material with a density of 20g / l is selected for mold making, and the shape and structure of the lower chamber of the special foam tire mold 2 are exactly the same as those of the casting of the compression molding machine. To ensure the...

Embodiment 2

[0032] see Figure 1-5 , the present invention comprises the following steps:

[0033] (1) Foam model production: Add 0.92% shrinkage rate and 12mm machining allowance on the basis of the part drawing to make a three-dimensional map of the foam model, and divide it into 12 modules according to the structural characteristics of the compression molding machine. The polystyrene foam board with a density of 20g / l is cut into modules by CNC engraving and electric heating wire cutting, and the modules are bonded and assembled into a model. The foam model 1 is consistent with the shape of the casting of the compression molding machine , the structure is exactly the same;

[0034] (2) Production of special foam tire mould: the polystyrene foam board material with a density of 21g / l is selected for mold making, and the shape and structure of the lower chamber of the special foam tire mold 2 are exactly the same as those of the casting of the compression molding machine. To ensure the...

Embodiment 3

[0043] see Figure 1-5 , the present invention comprises the following steps:

[0044] (1) Foam model production: Add 0.92% shrinkage rate and 12mm machining allowance on the basis of the part drawing to make a three-dimensional map of the foam model, and divide it into 12 modules according to the structural characteristics of the compression molding machine. The polystyrene foam board with a density of 19.5g / l is cut into modules by CNC engraving and electric heating wire cutting, and the modules are bonded and assembled into a model. The foam model 1 and the casting of the compression molding machine The shape and structure are exactly the same;

[0045] (2) Production of special foam tire mould: the polystyrene foam board material with a density of 20.5g / l is used to make the mould. , so as to ensure that it can be used as a bottom support during modeling;

[0046] (3) Drying paint: place the assembled model in a drying kiln at 58°C and bake for 11 hours, and paint the s...

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Abstract

The invention relates to casting technology improvement techniques, in particular to a casting technology method for a compression molding machine body. The casting technology method for the compression molding machine body is characterized in that foam for a polystyrene foam sheet material with the density of 19-20 g/l is adopted to manufacture a foam model with the identical shape and structure with a casting of the compression molding machine body, the polystyrene foam sheet material with the density of 20-21 g/l is adopted to manufacture a special foam molding bed with the identical shape and structure with a lower cavity portion of the casting of the compression molding machine body, a casting gate is arranged after coating of the surface of an assembled model is dried, a specially-made pore-forming core rod is adopted to perform casting forming on baffle holes and long through holes, a stepped casting system integrating punching, exhausting, slagging and feeding is used, and finally the casting is subjected to doffing cleaning. According to the casting technology method for the compression molding machine body, the manufacturing period of the casting is short, the cost is low, and the problems that a solid type casting technology is prone to generating defects such as surface slag inclusion, wrinkled skin, shrinkage and the like are solved.

Description

technical field [0001] The invention relates to a casting process improvement technology, in particular to a casting process method of a compression molding machine itself. Background technique [0002] The casting of this compression molding machine has a complex structure, the average wall thickness is 65mm, the thickest part is 450mm, and the unit weight is 18t. , the overall casting difficulty is relatively high, see figure 1 . Due to the traditional wood mold molding, core making and splicing process, the production cycle is long and the cost is high. However, the current resin sand solid mold casting process does not turn over the box, and the assembly surface is placed downwards to place the shape, resulting in serious chemical sticking of sand on the assembly surface of the casting. Cleaning, and castings are prone to defects such as shrinkage porosity, surface slag inclusions, blocked holes that cannot be cleaned. Contents of the invention [0003] The purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04
CPCB22C9/046
Inventor 雷翠平贺献峰周波
Owner 黄石新兴管业有限公司
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