The wet sand molding method is suitable for most metal materials and mass production modeling methods. The clay wet sand molding method is the most copper coupling Manufacturers economical molding method. The foundry is equipped with the latest technology control devices, which should be gradually achieved. The best performance can be obtained repeatedly with the wet sand control technology. These control devices include screening and separating metals, cooling of regrind, accurate release of additives when regrind is mixed, and so on. The current clay wet sand molding machine has excellent performance. It can produce wet sand molds with strict requirements and a small allowable difference at a speed never reached two years ago. Coupled with the accurate and efficient sand supply device, the clay wet sand mold maintains the most important position in the molding of iron-based alloys and non-ferrous alloys. In wet sand molding, vertical and horizontal parting are compared. For mass production of small and medium-sized foundry plants with gray iron or ductile iron, heavy straight parting has an advantage because of its equipment costs It is cheaper, can be modeled at high speed, requires less personnel, and has less deviation in compactness.
However, the vertical parting process is limited in terms of gate schemes and openings and shapes, as well as the use of complex cores, filters, cold iron, sleeves, and cores. In addition, when casting with a fluid alloy, the static pressure of the metal is relatively high, which can easily cause the metal to penetrate the sand. In the manufacture of non-ferrous alloy castings, vertical parting modeling methods with various characteristics suitable for mass production of such alloy castings have been designed and are now being promoted. However, before the castings with the required mechanical characteristics reach a high level of mass production with this molding method, as the production method of mass aluminum alloy castings, the metal mold casting method still has advantages. The horizontal parting wet sand casting method is also one of the favorable molding methods for medium and small batch casting factories. Whether it is the upper mold, the lower mold method, or the double-sided template method, it has adaptability to the production of complex castings. The appearance can be changed within a cycle period, and short-term operation and long-term operation can effectively produce. However, manual operation requires mechanization. In order to ensure the production of castings with excellent surface and high dimensional accuracy, the entire set of equipment needs to be transformed.
The selection of wet sand molding method needs to consider the following points: There should be molding equipment that can mold high quality molds with uniform hardness. The template can be changed quickly. Mechanization of loading and unloading of lower core and mold. In order to make the shape uniform, various techniques are used. There are several automatic double-sided template machines that use sand blasting and compaction methods. At this time, in order to obtain a uniform mold density, sand blasting and compaction methods. At this time, in order to obtain a uniform mold density, If it is perpendicular to the board. There is also an upper and lower moulding machine. In order to make the density of the mold uniform, micro-vibration and compaction are also adopted. In addition, in order to have a strong impact force when sand is filled into the pattern, a highly compressed gas is also useful. However, in order to obtain uniform mold hardness, a variety of methods are used, and one method cannot be solved for various molding methods. In the selection of the molding machine, the foundries currently in use should be investigated and tested with their own models to observe the results.
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