I. Selection of sawing speed and efficiency of bimetallic band saw blade (for reference only)
Cutting material band saw blade
Wire cutting efficiency (cm2/min) Size range (mm)
Φ25 Φ50 Φ75 Φ 100 Φ 150 Φ200
Low carbon steel and structural steel 50-80 25-35 40-50 50-60 55-65 65-75 70-80
Medium carbon steel and gear steel 40-75 20-25 25-35 30-40 35-50 40-60 40-50
High carbon steel, nickel-molybdenum steel and bearing steel 35-55 20-25 25-35 30-35 30-40 35-40 35-40 35-40
High alloy tool steel and high speed steel
Stainless steel and die steel 20-3510-15-2015-2015-2015-20.
Heat resistant steel and high temperature alloy steel15-255-105-107-135-15.
Non-ferrous metals (aluminum and copper) 60-80 25-35 35-45 45-55 55-65 65-80 65-80
Second, the choice of feed speed
According to the shape of the chip, it is judged whether the feeding amount of the saw belt is appropriate.
The feed speed is too small, and the chip is fine. The feed is too large, and the potato chips are thick and even blue.
Third, the running-in of the band saw blade
The new band saw blade must be run-in before it can be cut normally, so as to avoid premature damage to the sawtooth.
The feed during the running-in period is 20-30% of the normal feed.
The running-in period is about 5- 10% of the expected life.
The belt speed during running-in should be 20-30% of that during normal cutting.
Saw band should gradually transition from running-in period to normal cutting. Do not increase the feed and belt speed too much at a time. such as
45# steel φ 100 round steel can be cut normally after 20 knives. If the hardness of the cutting material is high or the cross section is large, the running-in knife
The quantity can be reduced accordingly. On the contrary, the number of running-in knives should be increased.