In the long-term practice, it is known that there is no suitable degree of saw blade, and wood sawing cannot be performed. Because the saw blade is different from other tools, it is finished by itself by high-speed rotation (circular motion). In order to save wood and reduce the width of the saw, the saw blade is required to be as thin as possible. The substrate is supported by sawtooth (alloy head) and does not participate in cutting itself, so it must be thinner than the saw. However, it is subject to cutting resistance during the sawing process, and at the same time, due to the intense friction of the sawing process, a sudden heat is generated locally, and the thermal stress causes the saw blade to be deformed. Therefore, the substrate must not only have a certain hardness, toughness, deflection and stiffness, but also must have stress and deformation against random changes. Appropriate degree is the external force applied to the base of the saw blade to cause local plastic deformation. The metal in the deformation zone is compressed in the vertical direction, and the longitudinal direction is extended, and the lateral direction is widened. The extension and widening are limited by the frictional and non-deformed metal, resulting in lattice torsion, dislocations, and the like. Increase internal energy and be in a metastable state. The so-called residual distortion energy, which is what we call the internal pre-tension. When rotating the saw blade at high speed, especially the large diameter saw blade. Metals in various parts along the diameter direction are subject to different centrifugal forces due to different linear velocities. And when the sawing wood is sawn, the radial thermal stress distribution of the saw blade is very different, and the large thermal stress of the sawtooth portion causes the tension of the part to be significantly reduced, resulting in soft (relaxed) sway of the kerf. During normal sawing, the thermal stress along the diameter centripetal direction is linearly distributed from large to small. Corresponding to the internal prestress. Maintains the stiffness normally required at the kerf. Some people also use the "metal processing surface hardening principle to explain the principle of the degree of correction". In short, the appropriateness of the saw blade is the key to the dynamic quality of the saw blade. The hammering and rolling pressures currently used and the degree of heating and appropriateness have a certain effect, but I believe through many years of practice. To achieve the desired result, it must match the actual situation of the user (part and pressure). Moreover, after use, the internal stress will disappear (recover). Sink Caddy,Sink Caddy Kitchen,Double Sink Sponge Holder,Kitchen Sink Caddy Sponge Holder NINGBO NEWMORE IMP. & EXP. Co., LTD. , https://www.newmoreclean.com
About the appropriateness of the wood saw blade