With the rapid advancement of materials technology, new metal processing materials with different materials and various varieties have gradually become the new darling of the industry. They bring more competitiveness and greater benefits to manufacturers, but also bring to the metal processing industry. Go for new technical challenges. However, these challenges are not insurmountable, as long as the right band saw blade is used, the correct band sawing machine is used, and the band saw blade and band sawing machine are fully maintained, the troubles will be solved.
Here are a few tips that can be used to easily and easily extend the life of the band saw blade, providing a cleaner, smoother cutting operation that reduces the cost per cut.
Tooth type selection
The choice of tooth profile is an important consideration when cutting any type of steel with a band saw blade.
For structural steels, the choice of profile should focus on the wall thickness. Thin-walled structural steels require the use of finer toothed saw blades with more tips (5/8T or finer) per inch. Shapes such as I-beams may have thicker walls and therefore require a larger pitch (2/3T or similar).
Most band saw blade manufacturers provide charts to help select the right profile configuration, which will help to better remove chips and extend the life of the band saw blade. The global band saw blade manufacturer Lenox? has its own SawCalc software program, which allows users to easily and easily select the correct tooth shape, band saw blade, band saw blade running speed, feed rate, etc. with the help of a software program.
Figure 1: Difficulties in cutting structural materials into lengths by selecting the right band saw blade for the job, proper operation, and maintenance of the band saw blade and band sawing machine
Band saw blade running-in
It is important to use the correct running-in procedure on the new band saw blade to extend the life of the band saw blade by more than 50%. Precision milled or ground band saw blades usually have very sharp serrations, and if the tips are not gradually ground to a certain radius, they are extremely prone to abnormal wear when the material is first cut. Sharpened serrations are similar to sharpened pencils: if the pushing force is too large, the sharp tip will break immediately. However, if the pressure applied to the pencil is gradually increased, the pencil lead will form a rounded tip and will withstand greater pressure for a longer period of time. When properly lapped, the serrations on the band saw blade form a radius (circle) to prevent premature chipping. Product design also plays an important role in preventing premature chipping of the tip. The Rx+ band saw blade manufactured by Lenox is recognized worldwide as the top structural cutting band saw blade. Its special tooth shape gives it a large weld zone, preventing the sawtooth from falling off even at faster feed rates.
To properly wear the band saw blade, you must first select the appropriate band saw blade operating speed based on the material to be cut. The feed rate is then reduced below the normal rate. The rate reduction varies from metal grade to range from 20% to 50% of normal speed. Softer grade materials require a slower feed rate than harder materials. Make the first cut at a slower speed, but make sure the saw teeth are producing chips. During the first cut, the feed rate is slightly increased once the saw blade has fully entered the workpiece. For each additional cut, the rate is gradually increased until the desired cutting rate is reached.
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