Pattern compaction technology is also referred to as double-sided compaction technology, etc. It is a combination of air-impact and hydrostatic molding, invented in the 1980s. However, there is an unfortunate aspect to this. Following its invention in Italy, the technology was initially suppressed by air impact molding for a decade and then by static pressure molding for over twenty years. Template compaction modelling technology was only adopted by companies such as HWS and KW after the patent expired, and it has since become a popular technique worldwide. However, despite its growing popularity, there has been little discussion about the limitations of formwork compaction.
First of all, some so-called pattern compaction just adds a circle of frames around the pattern, so that the pattern will not move, but the frame will be pressed down. Relatively speaking, the pattern is pressed into the frame. Therefore, this is a false pattern compaction. Secondly, because the pattern compaction is that the pattern is pressed into the flask, if the pattern is tall, it will be resisted by the upper pressure head and cannot be pressed into the flask. To solve this problem, the first generation of pattern compaction is to press into the flask when the sand is very loose, but this leads to the pattern compaction action, which is completed when the sand is soft, and the pattern compaction effect is not good. Finally, if there are holes with a diameter of about 40mm on the pattern, especially holes with a length-diameter ratio greater than 1, it is very difficult to compact, and even if it is formed, it is very soft. Finally, Finally, stagger flask is relatively large due to the reliance on pattern frames for positioning. These shortcomings are not told to customers by manufacturers who advocate pattern compaction. To solve these problems, please choose the third generation pattern compaction technology of ABM.
Suitable for gray iron, ductile iron and steel castings, especially for castings with tall flasks, especially for flasks with a height greater than 400 mm. Such as automobile parts, engineering machinery parts and so on.