Traditional cylinder liner production enterprises generally use independent multiple cantilever centrifugal casting machines to produce cylinder liner castings. Low production efficiency, unstable product quality, high labor intensity, and harsh working environment make it a typical labor-intensive industry. With the development and progress of society, while the market demands higher quality of cylinder liners, the cost of cylinder liners is required to be further reduced. In the context of rising raw material and labor costs, traditional production methods are no longer able to meet market requirements and seriously constrain the sustainable development of cylinder liner production enterprises. Therefore, advanced cylinder liner casting production equipment with high efficiency, high automation, and stable production process is an essential equipment for the future development of cylinder liner enterprises. The fully automatic servo controlled cylinder liner centrifugal casting machine adopts a single host+multi station auxiliary machine integrated structure. The host is controlled by frequency conversion speed regulation, and the auxiliary machine is controlled by servo drive, achieving automatic control of the entire process of cylinder liner centrifugal casting production, such as cleaning, spraying, pouring, cooling, and pipe pulling. The high-speed and stable adjustable host, advanced multi stage and multi speed spraying technology, and real-time monitoring and adjustment of key process parameters throughout the entire casting process ensure the repetitive consistency of the casting process for each type of cylinder liner product, completely eliminating the influence of human factors on the casting process parameters, and fundamentally ensuring the stability of the internal quality of cylinder liner castings. Machine features:The high-speed and smooth operation of the main engine - the smooth operation and rotational speed of the pipe mold are key factors affecting product quality. Therefore, there is a high requirement for the smoothness of the main engine operation. Under high-speed operation, the radial runout of the pipe mold is smaller, the wall thickness of the cylinder liner is more uniform, and the organizational performance is more stable. The main engine adopts a four wheel structure, and the bearing seat is made of cast iron, which has good shock absorption. The surface of the supporting roller is hardened and finely ground, using an AC stepless frequency control motor and a high-performance vector control frequency converter. The high-performance V-belt drives the rotation of the supporting roller, ensuring precise speed control of the pipe mold. The regenerative braking system ensures rapid stop of the pipe mold and improves production efficiency. Accurate positioning control of auxiliary machine actions - cleaning, spraying, and pipe pulling mechanisms are centrally arranged on a movable platform. By changing the position of the mobile platform, the working positions of the cleaning, spraying, and pipe pulling auxiliary machines can be switched. Adopting servo positioning control method to control the action position and speed of spraying, pipe pulling, and moving platforms, achieving high-speed and accurate positioning of auxiliary equipment, meeting strict process requirements, while shortening action time and improving work efficiency. Excellent spraying quality - The inner layer coating of the pipe mold can reduce the impact of metal liquid on the pipe mold, reduce the peak temperature of the pipe mold, and effectively extend the service life of the pipe mold. At the same time, it can increase the friction between the pipe mold and liquid metal, shorten the time required for pouring metal liquid to reach the rotation speed of the pipe mold, and make the casting easy to demould during pipe drawing.The movement of the spray rod is controlled by a servo system, which ensures smooth movement and adjustable position, ensuring the uniformity of the spray layer. The movement speed of the spray bar can be divided into three adjustable sections, and the distance and speed of each section can be adjusted. Combined with the rotational speed and spraying pressure of the pipe mold, it can meet the requirements of various complex spraying processes. Real time monitoring of pipe mold temperature and water spray cooling - mold temperature has a significant impact on the quality of cylinder liners. Especially the metallographic structure and hardness. If the mold temperature is too high, the wet coating is prone to detonation, the coating is uneven, the surface quality of the cylinder liner cannot be guaranteed, and the lifespan of the pipe mold is shortened; If the mold temperature is too low, the coating will not be completely dry during pouring, and bubbles will not easily precipitate before pouring. When high-temperature molten iron meets the wet coating that is not completely dry, it makes the cylinder liner prone to casting defects such as white mouth and air holes.Configure an infrared temperature measurement device to real-time detect the three temperature segments on the outer surface of the pipe mold, and display the three temperature segments on the human-machine interface. The cooling nozzle of the pipe mold is evenly arranged along the axial direction above the pipe mold. According to the set cooling time parameters, the outer wall of the pipe mold is sprayed with water for cooling during the pouring and solidification process of molten iron, so as to control the temperature of the pipe mold within the appropriate process range& nbsp; Reliable casting removal mechanism - The pulling mechanism adopts an electric and pneumatic control method, which can smoothly pull the cylinder liner casting out of the pipe mold. Automatic pouring and precise weighing of molten iron - Automatic pouring is composed of pouring vehicles, tilting ladle, etc. The pouring speed of pouring ladle tilting can be adjusted. Equipped with an automatic weighing device for ladle molten iron to ensure consistency in the weight of each batch of cylinder liners. The weight of ladle molten iron is displayed on a large screen and can be printed and recorded. Efficient, safe, stable, and flexible electrical automatic control system - The control system uses PLC as the control core and human-machine interface as the monitoring system to complete the entire process automatic control of the centrifugal casting machine and monitoring of the production process. The control system has comprehensive protection measures such as overcurrent and overload. The process parameters of the main machine, the working position and speed of each auxiliary machine, and other parameters can be set, adjusted, and stored on the human-machine interface, making the equipment flexible and suitable for the production process requirements of multiple types of cylinder liner castings within a certain range. Technical parameters: Serial numberParameter NameParameter valueCompanyoneCast pipe diameterΦ 60~Φ one hundred and twentymmtwoCasting lengthone thousand and two hundredmmthreeMold raceway diameterΦ 100~Φ one hundred and eightymmfourDiameter of supporting rollerΦ 300x70mmfiveOuter span of two supporting rollersseven hundred and forty-fivemmsixDistance between ground and mold centerseven hundred and twentymmsevenCylinder speed0~2000rpmeightMain motor powerseven point fiveKWnineMaximum size of equipment6310x4200x1200mm
