El trueque es el presente y el futuro del comercio internacional, especialmente para las personas que se inician en el negocio de importación y exportación. El trueque y más, operaciones triangulares.
La segmentación perfecta para sus propuestas de negocio, Sus lugares de destino, además de su clase de clientes objetivo, además de sus artículos y categorías.
The sprocket wheel of the scraper conveyer is a key part of the power drive. Its wear resistance and strength have great influence on the working efficiency of the fully mechanized face of coal mine. The performance of the sprocket wheel of the scraper is based on raw materials.
It can be seen from the working property of the sprocket wheel of the plate scraper in the coal mine that the friction between the sprocket wheel and the chain mainly occurs at the chain nest, so the hardening hardness and the hardening layer depth at the chain nest are very important for the sprocket wear resistance. Therefore, the material selection of sprocket wheel of plate scraper is the basis of sprocket quality. For the chain wheel of plate scraper, the material selection is material of 42CrMo and 40CrNiMoA. The inner surface of teeth and the outline of chain socket of these two materials have better quenching hardness, which can reach HRC45-55.
And scraping machine sprocket 40 crnimoa material relative to the 42 crmo material to increase the Ni element, to improve the plasticity and toughness of ourselves, to improve corrosion resistance, and used in combination with Cr, Mo, can improve the heat intensity and hardenability, has good high temperature oxidation resistance and oxidation resistance of medium corrosion effect, so more suitable conditions, a large quantity of fully mechanized coal mining working face, therefore applies to more than 900 models of large models, and model 630, 730 models is a little bit small, such as scraping machine sprocket models are generally choose 42 crmo material, can not only guarantee the performance of the machine sprocket, You can also save some input costs and kill two birds with one stone.
Scraper sprocket material choice is to lay a foundation for product quality, good foundation can give a good quality, just like building a building, the foundation is stable, to build higher. Double of henan machinery has been focusing on the scraping machine parts production and processing, especially in the scraping machine sprocket as the main products, regardless of the material, process, equipment is perfect, for different customers, different mining area of scraping machine sprocket use requirement to provide security, more products information, welcome to pay attention to pair of henan mechanical website or consulting, we look forward to cooperation with you.
