The last big leap in the craftsmanship of band saw blades on sawing machines occurred in the mid-1960s. Bimetal saw blades were recognized, and carbide saw blades followed. Before bimetal saw blades, band saws had limited cutting power. Past band saw blades are all made of high-carbon steel, because they are flexible enough to withstand the stress caused by the saw blade’s drive wheel and saw blade guide due to the saw blade’s tortuous track. Bimetal saw blades require the use of more flexible substrates, so it has become an obstacle for manufacturers to improve sawing power by adding material hardness and extending the life of the tooth edge. Bimetal and cemented carbide band saw blades have made a permanent and amazing innovation in the sawing process. Since then, in addition to the improved hard tooth welding method, the development of the sawtooth structure, tooth profile, blade material and steel back has made the band saw blade to compare Steady footsteps are constantly advancing in the direction of improving productivity and saw blade life. As if the bimetal and cemented carbide saw blades are the same, the latest development of the second-generation PVD coating and saw tooth planning has become the latest leap in band saw cutting.
After the second generation of coated saw blades have been applied to small tools such as drills, blades, end mills and so on for many years, they began to see clues in the band saw blade manufacturing industry in the early 1990s. Titanium (TiN) coated saw blades are not only expensive, but also plagued by inconsistent production quality. Nowadays, the second-generation coating allows the use of higher sawing and feed speeds due to the enhancement of the toughness of the saw blade, and avoids excessive conflict and heat generation of the saw blade. The maintenance film coated on the band saw blade can significantly improve the output power without reducing the service life of the saw blade. These coatings are the next step for improvement that the band saw blade market urgently needs: coated carbide saw blades that help increase the feed rate and bimetal saw blades that help improve the life of the saw blade. In the past few years, saw blade manufacturers have gradually mastered the various coating processes (chemistry, data preparation, coating techniques and fixtures) required for large tools such as band saw blades, and selected band saw blades produced by improved coating processes. Increasingly welcomed by factories, especially high-volume processing plants. Manufacturers now produce a variety of advanced and special-purpose (such as titanium nitride (TiN) and titanium aluminum nitride (AlTiN)) coated saw blades, these coatings provide unprecedented productivity and increase life. The coated bimetal saw blade has the advantages of bimetal and maintenance coating. In addition to adding the life of the saw blade, it can also ensure a high cutting speed and feed rate.
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