The defect of precision aluminum tube is a factor that causes scrap. A small defect on the precision aluminum tube will scrap the entire precision aluminum tube that has been cut to length. Due to the high added value of precision aluminum tubes, extrusion manufacturers should try their best to reduce defects in precision aluminum tubes. Non-extrusion cycle time-assuming that the production efficiency of the precision aluminum tube extruder is 30 aluminum rods per hour, and each non-extrusion cycle saves 10 seconds, then the extrusion time can be increased by 2 hours per day, which means 2 hours The output is more than 8%, which is equivalent to reducing the conversion cost of 8% per kilogram of profile. Downtime (operational interruption)-the loss caused by the downtime is huge (in our example, the downtime loss is 48.00 yuan per minute), not to mention the lost capacity due to no output during the downtime. Extrusion speed-The production efficiency brought by the purchased high-tech precision aluminum tube mold should be seriously considered. If the precision aluminum tube mold purchased can achieve a faster extrusion speed than the mold made by the extrusion manufacturer itself, then a moderate order can make up for the additional cost of purchasing the mold. For example, assuming that the normal cost is 2,860.00 yuan/hour, the additional cost of purchasing high-tech molds is 10,000.00 yuan, as long as the extrusion speed increases by 50% and the basic production efficiency reaches 800 kg/hour, then an order of less than 10 tons It can make up for the extra cost incurred by using high-priced molds. Using a porous mold, the extrusion speed can be increased by 200% (2-hole mold) or even 300% (3-hole mold), and the economic benefits brought by it will be higher. One of the biggest advantages of using a modern precision aluminum tube tractor is that when the precision aluminum tube reaches the correct extrusion length, the tractor has the function of controlling the extruder to stop the extrusion. This is similar to the non-extrusion cycle, but because the extruded precision aluminum tube is exactly the required length, there is no waste of extrusion time. Therefore, more cost can be saved, because while reducing waste, it also saves the links of conveying and recycling the extruded waste. After the precision aluminum tube is extruded from the extruder, the most important goal is to increase the output and the rate of shipment by reducing waste, and to send more products to customers. The cost of any waste generated after extrusion will be very high, so the production of waste must be reduced as much as possible in the subsequent process. To minimize the waste, it is necessary to realize the sawing at the parking mark (the parking mark refers to the mark left by the mold on the profile during the non-extrusion cycle). There are only two technologies that can realize sawing at the parking mark-namely flying saw cutting and dual length system. Flying saw cutting technology refers to sawing in the extrusion process. The flying saw cutting technology can cut the profile at the parking mark after the parking mark comes out of the extruder. The dual-length system means that after the second profile is extruded, it is cut between the first and second profile during the non-extrusion cycle. Both technologies have their own advantages. The dual-length system can provide air cooling time for two extrusion cycles, which is very beneficial for architectural alloys. However, the flying saw cutting system is less costly (equipment cost and plant space cost) and allows one-bar multi-cutting mode operation without stopping the extruder. The precision aluminum tube moves on the extruder transfer system-any movement on the extruder transfer system may cause damage to the precision aluminum tube. For example: the modern transmission system uses the tractor to directly place the precision aluminum tube flush with the stretching machine head, so that there is no need to push and pull the precision aluminum tube on the belt table to make the
aluminum profile and the stretching machine. The jaws are aligned. Therefore, the possibility of the profile being scratched can be reduced. ————The article comes from the Internet. If there is any infringement, please contact to delete it.
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