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生物质颗粒机生产厂家的压辊为什么会出现磨损?

来源:http://www.comicbopk.com 发布时间:2019-06-24 浏览次数:
  生物质颗粒机环模和压辊压机的主要工作部件,许多用户只知道损坏更换磨料和压辊,不找到磨损辊的磨损快的原因,导致磨损零件的成本的增加。今天关北机械工程师帮您分析:生物质颗粒机滚筒磨损严重的原因。
  Many users only know how to damage and replace abrasives and rollers, but they do not find the reason why the wear rollers wear fast, which leads to the increase of the cost of wear parts. Today, Guanbei Mechanical Engineer helps you to analyze the cause of serious wear and tear of the drum of biomass granulator.
  生物质颗粒机生产厂家的压辊为什么会出现磨损?
  Why does the roller of biomass granulator manufacturer wear?
  压力辊用于将材料挤压到环模上。因为压力辊受到摩擦和挤压压力很长一段时间,压力辊的外圆周表面加工成牙槽顶壳机,这不仅增强了抗磨能力,但也很容易抓住散装材料。压力辊的工作条件很差。生物质秸秆、木屑等生物质原料中含有砂粒、硅化物、铁屑等硬颗粒,除了原料引起的压力辊的正常磨损外,还加剧了压力辊的磨损。由于压辊与环模的线速度基本相同,所以压辊直径仅为环模内径的0.4,因此压辊的磨损率是环模的2.5倍。压辊的理论设计寿命为800h,但实际使用时间不超过600h。由于部分用户使用不当,使用时间小于500h,并且由于辊筒表面磨损严重而失效已无法修复。轧辊磨损过快不仅会降低颗粒燃料的成型率,增加生产成本,而且直接影响生产效率。此外,当压力辊显示严重磨损,磨损层深度超过70%的工作层厚度辊的压力,这个时候,生物质颗粒成型率已下降到75%以下,我们相信它的失败,在这个时候,压力辊的把握能力显著降低,放电速度降低,散装材料增加,外表面坑迅速增加。、
生物质颗粒机生产厂家
  Pressure rolls are used to extrude material onto the ring die. Because the pressure roll is subjected to friction and extrusion pressure for a long time, the outer circumference surface of the pressure roll is processed into the alveolar top shell machine, which not only enhances the anti-wear ability, but also makes it easy to grasp bulk materials. The working conditions of pressure rollers are very poor. Biomass raw materials such as biomass straw and sawdust contain hard particles such as sand, silicide and iron chips. In addition to the normal wear of pressure rollers caused by raw materials, the wear of pressure rollers is also aggravated. Because the linear speed of the roller is basically the same as that of the ring die, the diameter of the roller is only 0.4 of the inner diameter of the ring die, so the wear rate of the roller is 2.5 times of that of the ring die. The theoretical design life of the roller is 800 hours, but the actual service life is not more than 600 hours. Due to the improper use of some users, the service time is less than 500 hours, and the roller surface wear and tear is serious and the failure can not be repaired. Too fast wear of rolls will not only reduce the forming rate of pellet fuel, increase the production cost, but also directly affect the production efficiency. In addition, when the pressure roll shows severe wear and the depth of wear layer exceeds 70% of the working layer thickness roll pressure, at this time, the forming rate of biomass particles has dropped to less than 75%, we believe that its failure, at this time, pressure roll grasp ability significantly reduced, discharge speed decreased, bulk materials increased, and external surface pits rapidly increased.
  生物质颗粒机生产厂家的压辊为什么会出现磨损?
  Why does the roller of biomass granulator manufacturer wear?
  当生物质颗粒的压辊的摩擦,有硬磨料粒子表面的压辊,导致局部塑性变形的压辊,磨料粒子嵌入和降低金属表面,导致部分逐渐丧失的渗碳层表面,直到几乎消失了。不仅粉碎秸秆作为磨料,原料中含有铁、砂等颗粒较大的硬物质杂质,而且压辊咬伤,使压辊表面出现凹坑、划痕等。轧辊磨损机理与环模磨损机理基本一致。
  When biomass particles are frictioned by roller, there is a roller on the surface of hard abrasive particles, which results in local plastic deformation. Abrasive particles are embedded in and reduce the surface of metal surface, leading to the gradual loss of carburized layer surface until it almost disappears. It not only crushes straw as abrasive, but also contains iron, sand and other hard impurities with larger particles. Moreover, the crushing roll bites, which makes the surface of the crushing roll appear pits, scratches and so on. The wear mechanism of roll is basically the same as that of ring die.
  因此,在生物质颗粒机生产过程中,原料的除铁除砂显得尤为重要。以上是生物质颗粒机生产厂家为大家整理的相关内容,希望能帮到大家,我们的网站是http://www.comicbopk.com,欢迎大家来电咨询。
  Therefore, in the production process of biomass granulator, it is particularly important to remove iron and sand from raw materials. Above is the related content that the manufacturer of bio-granulator sorted out for you. I hope to help you. Our website is http://www.comicbopk.com. Welcome to inquire.

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