The ring mold is too thin, so that the strength of the ring mold is not enough, and a flashing phenomenon occurs during production. At this time, the thickness of the ring mold and the opening of the pressure reducing hole should be increased under the premise of ensuring the effective length of the die hole. Generally speaking, the compound feed with high grain content should choose a compression ratio of 8-12.5; the heat sensitive feed and urea feed should use a compression ratio of 5-8; the concentrated feed containing high natural protein is suitable for 5-- The compression ratio between 11; the cow's compound feed is suitable for the compression ratio between 7 and 15. In addition, after considering the basic formula of the feed, the specific compression ratio can be adjusted according to the feed quality required by the producer. For example, using a slightly lower compression ratio is advantageous for increasing the output, reducing the energy consumption, and reducing the wear of the ring mold, but such a Will reduce the quality of the feed, such as the particles are not strong enough, the appearance is loose and long, the feed has a high chalking rate, and conversely, it is good for the quality of the particles (the particles are smooth and shiny, the chalking rate is small), but it will increase The production cost of the product.
Secondly, the reasonable working gap between the ring die and the pressure roller has an important influence on the effective use of the ring die. Generally, the gap between the ring die and the pressure roller is between 0.1 and 0.3. In practical experience, it is preferable that the pressure roller is rotated to a non-rotation state while the ring die is rotated by hand. Then, how to adjust the gap between the ring die and the pressure roller? Through our practical experience, after the new die machine is installed, firstly, loosen the pressure roller adjusting bolt to adjust the pressure roller to the outer surface of the pressure roller and abut the ring die. The state of the inner circular surface; secondly, the eccentric shaft of the pressure roller is adjusted in order to make the gap between the pressure roller and the ring die appropriate, the bolt is pre-tightened, the ring die is pulled, the gap is gradually adjusted, and the pressure roller is turned into a non-rotating work. State, and finally tighten the adjusting bolts. When the new mold is installed, it is usually required that the gap between the ring mold and the pressure roller is slightly larger than what you need, which is beneficial to the smooth transition between the new ring mold and the old roller, and the new mold and the old roller complete a certain running-in period. In the future, you can adjust the gap to the gap you need. In use, the ring is guaranteed and the pressure roller is sacrificed. Because the price of the ring mold is ten times or even several times that of the pressure roller, the hardness of the pressure roller cannot be used in the case of selecting a reasonable gap. Too high, that is, the wear resistance of the press roll cannot be higher than the wear resistance of the ring mold.
In the production process, the ring mold requires necessary cleaning of the materials used to avoid the material mixing with hard particles such as large sandstone, sand, iron, bolts and iron filings. Because these inclusions accelerate the wear of the ring mold, and a large number of large hard inclusions will cause the ring mold to be subjected to multiple times, causing the ring mold to fatigue. When a force exceeds the strength limit of the ring mold, the ring mold will explode. Mode phenomenon.
Finally, when the operator newly installs or replaces the ring die, for the ring die assembled through the cone surface, it is required to avoid the bump and the scratch of the cone when the new die is mounted, and the tapered surface and the matching drive rim thereof The cone is cleaned and oiled. When replacing the ring mold, disassemble, not scratch and scratch the cone surface, and protect the oil. For pellet machines that often need to replace the ring mold, it is required to check the drive rim regularly to prevent excessive wear of the mold centering pin, because excessive wear will affect the fit between the ring mold and the rim. If the ring mold is working, it will cause shearing force on the centering pin of the mold to cause breakage. When this happens, don't mistake the pin for the strength and replace it with a high-strength pin. It can only cause damage to the ring mold and frequent breakage of the safety pin. Therefore, it is quite necessary to protect and periodically inspect the mating cone surface of the ring mold and the tapered surface of the mating transmission rim. For the hoop-fitted ring die, the protection and inspection of the mounting surface and its mating components is also necessary. When the pressure roller is used for a period of time, the wear phenomenon will occur, which affects the precision of the fit with the ring mold, thereby affecting the production yield of the ring mold, and necessary repair or replacement of the new ring mold.
As the saying goes, sharpening the knife does not mistake the woodworker. Proper maintenance of the ring mold is part of the economical and efficient use of the ring mold.
In the production process, it is often found that during the use of the ring mold, clogging, wear, sealing and varus are often caused. At this time, if the necessary maintenance is not carried out, the output will be reduced, the energy consumption will increase, or even Material and other phenomena. At this time, the basic maintenance method of the ring mold is to first smooth the inner circular surface of the ring mold and then perform chamfering. When replacing the ring mold, the hot mold is required to fill the mold hole with the oil-containing material, so that the ring mold can be optimally produced in the next production.
In summary, only the correct selection, reasonable use and effective maintenance of the ring model can reduce costs, improve efficiency, create particle quality, enhance product market competitiveness, meet challenges, and create more economic benefits for enterprises.
The wool dauber ball is made of natural wool with uniform size, and the wool is not easy to fall off. The touch is soft and delicate, and the color is uniform. It can be used to apply dye, maintenance oil, alcohol and other liquid applicators, which is convenient and easy to use. It can also be used for auxiliary edge ironing, which is suitable for wet water treatment of leather edge of edge ironing.
Wool Dauber,Wool Daubers Ball Brush,Wool Ball Brush,Best Wool Dauber
JIANGSU RARHON TOOLS CO.,LTD , https://www.rarhontools.com