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Application and Wear of Thread Bars

  • Release date:27-03-2017
  • Abst:

    Such as the threaded bar, also known as the threaded, i […]

    Such as the threaded bar, also known as the threaded, is the outer surface of the spiral groove with a cylindrical or cut cone spiral groove cone. Threadeds have different heads, hexagonal threadeds, large flat threadeds, hexagon threadeds, and so on.

    From the extrusion process, the threaded is in high temperature, certain corrosion, strong wear and tear, work under high torque, so it must be high temperature, wear resistance, corrosion resistance and has good cutting performance.

    The threaded rods do not have head or washers similar to those found on the threadeds on the bolts and tend to have the same diameter along their entire length. Depending on the model, the threaded rod can be threaded along the entire length, or simply at either end. So the product is sometimes referred to as the full thread, can also be referred to as studs

    Threaded bars are used in plastic molding equipment, such as plastic profiles extruder, injection molding machines. Screws and barrels are the core of plastic molding equipment. Is heated and extruded into plasticized parts. Is the core of plastic machinery. Screws are widely used in machining centers, CNC machines, CNC lathes, injection molding machines, wire cutting, grinding machines, milling machines, walking wire, wire walking, PCB drilling machine, carving machine, engraving and milling machine, spark discharge machine , Planer, large vertical gantry milling, and so on.

    The threaded bar will be worn. The screw in the barrel rotation, the material and the friction between the two, so that the screw and the barrel of the working surface gradually wear: screw diameter gradually reduced, the barrel of the hole diameter gradually increased. In this way, the screw and the barrel with the diameter of the gap, with the gradual wear and tear of the two slightly increased. However, since the resistance of the head and the manifold in front of the barrel does not change, this increases the leakage flow when the extruded material is advanced, i.e., the flow of material from the diameter gap to the feed direction. Resulting in the decline in the production of plastic machinery. This phenomenon also makes the material in the barrel to increase the residence time, resulting in material decomposition. If it is polyvinyl chloride, the decomposition of hydrogen chloride gas to strengthen the corrosion of the screw and barrel.