With the gradual reduction of timber resources and the scarcity of raw materials, the woodworking machinery industry has faced significant challenges. However, apart from the gradual exit of rotary cutting machines from the market, there are still new types of woodworking machinery emerging to fill the gap. Many friends engaged in the wood business are gradually transitioning to processing logs, which requires the use of multi-blade rip saws.

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Causes of blade wear in log multi-blade rip saws

  1. Mechanical wear:
    Mechanical wear in multi-blade rip saws refers to the uneven grooves on the tool surface caused by the workpiece or cutting edge. The smaller the hardness ratio between the workpiece or cutting edge material and the tool, the more prone the tool is to wear. Therefore, the tool must have high hardness to improve its wear resistance.
  2. Adhesive wear:
    When cutting plastic materials, the cutting and the workpiece before the cutting tend to stick together, causing the tool surface or local weak particles to be rubbed or bonded by the cutting action, resulting in tool wear.
  3. Diffusion wear:
    Diffusion wear refers to the mutual diffusion of alloying elements between the tool and the workpiece during high-temperature cutting, leading to a decrease in the physical and mechanical properties of the tool material and exacerbating tool wear.
  4. Phase transformation wear:
    Different materials used in alloy saw blades, inadequate heat treatment techniques, or insufficient thickness of the matrix can cause accelerated wear of the alloy saw blade edge when the temperature exceeds the phase transformation temperature during high-speed cutting and friction, resulting in the loss of cutting ability.
  5. Oxidation wear:
    Oxidation wear is a type of chemical wear that occurs when the oxygen in the air reacts with cobalt, tungsten carbide, titanium carbide, and other alloy components during friction at temperatures of 800 degrees Celsius or higher, leading to tool wear.
  6. Built-up edge wear:
    Built-up edge wear occurs when the tool has low precision, excessive feed rate, improper selection of grinding wheels, or if the cutting edge is poorly ground. It is caused by factors such as impact loads during the cutting process or poor material toughness, leading to the detachment of the cutting edge due to various surface angles of the tool.

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