MEMBER Wood Products;

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MEMBER Forest Operations; Pulp, Paper and Bioproducts;

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Previous experimental tests and mill tests on several saw guide designs confirmed that the concept of open and pocket-free saw guide can improve the cooling capacity of a guide pad, but with a downside of fast wearing on the pad. It was also shown that changing the shape of the water / oil ports to a tear-drop shape reduced the premature leakage of water from the pad. Laboratory tests also demonstrated that the creation of vein-like patterns on the saw guide facilitated the flow of water to reach the top of the pads, improving the cooling capacity of the guides (Part I and II). As a continuation of work on this project (Part III), the effect of chilled water and separate lines for oil and water were investigated. It is also shown that the temperature affects the viscosity of oil, and consequently its flow. In addition, a computer model of wood moving during a cut was built and the effect of wood moving on guide pad wear was analyzed. Based on this analysis, the critical areas on a guide can be distinguished, so the separate line of oil can be used on these areas to reduce wear.


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