Never Neglect the Crucial Barrel Alignment in Extruder
Alignment of the barrel with the screw is very important in an extrusion machine. If it is poorly aligned, then there can be excessive wear and tear on both the screw and barrel. At the same time, it can also lead to screw breakage, additional drive load and even stoppage in the machine. So, no doubt it is a highly specialized job that must be done by an experienced and renowned service provider. The Alignment Process A professional company in this field would install a laser transmitter or similar equipment in the Center of rotation of the gearbox output. This equipment also includes a detector that is inserted into the feed throat and output end. Some of the companies have also invested heavily and use an innovative device that measures even a thousandth part of an inch. This basically collects all the data related to measurements, which actually helps in the alignment process.
Extrusion barrels are heated up using laser waves but are aligned when cold. The position of barrel does not stay the same in the two different conditions while it is heated and when cold. A professional and experienced company in this case makes some additional checks by placing dial indicators at 90Â° angles on the discharge flange. An experienced company in this field can align the barrel both horizontally and vertically absolutely as per clientâ€™s requirement. The process of extrusion barrel alignment should be done each time the screw is removed or even when the gearbox is removed from the extruder. The process at the quickest would take minimum 8 to 10 hours. More is the size of the screw, more is the difficulty in its alignment with the barrel.
Parameters for Choosing the Right Company Well, there are a number of things that you should focus on while choosing a company for this critical job. The company you hire needs to be an industry leader and enormously experienced. It should have all the latest equipment and infrastructure to cater to the requirements of its clients. Make sure the company you hire is ISO certified. This authenticates that the raw materials along with the service quality would be excellent. The most vital aspect is to check whether they have experts in this field. If possible talk to a few of them before placing your order. Last but not the least, check whether they can develop different types of extrusion parts like Barmag Parts and more.
Published on Nov 21, 2013
Alignment of the barrel with the screw is very important in an extrusion machine. If it is poorly aligned, then there can be excessive wear...