A band saw is a multi—cutter sawing tool used in band sawing devices.
A band saw is a multi—cutter sawing tool used in band sawing devices.
It is made in the form of a solid steel elastic band with teeth along the edge, which is placed on two pulleys of the machine, driven by electric traction.
Saws of this type work in a similar way as circular saws.
They also have teeth, but their purpose is somewhat different.
The teeth increase the release of heat during sawing, which accordingly has a positive effect on the productivity of the saw blade.
Band saws are usually produced with a thickness of 0.6 to 1.6 mm and a width of 6 to 25 mm.
Band saws are made closed and radically differ from hacksaw blades in the length of the sharp edge.
Saw blades with teeth are used in machine tools that are used for processing wood, metal, foam blocks, mineral wool, as well as animal raw materials and many other types of products.
The canvases are made of carbon steel, from a combined alloy or with the use of soldering a special alloy onto the teeth.
Bimetallic canvases are most common.
The blade in such saws is flexible, and the teeth are hard.
This effect is achieved by using two excellent metals in their production.
Its base is made of a strip of elastic steel metal, due to which the canvas becomes flexible.
Then, a wire made of specialized tool metal is soldered to it by an inverter, after which the teeth are milled.
The scope of use of canvases varies from the pitch of the teeth, the hardness of their teeth, geometry and wiring.
1.
The dimensions of the workpiece always correspond to the size of the teeth on the web used.
The larger the workpiece, the larger the teeth will be.
For more precise work, saws with teeth of different, alternating sizes can be used.
2.
The steel standard for the web is M42 (Edge hardness 950 Vickers points).
In the manufacture of tool steel, it is customary to use saws with high tooth hardness of the M51 brand (edge hardness 1000 points according to Vickers) or the M71 brand.
3.
The tooth profile and the sharpening angle actively influence the dynamics of processing.
The viscosity of the workpiece, characteristic of galvanized metal, requires an acute sharpening angle of 15%, and solid and profile structures require reinforcement of the tooth backs.
4.
To avoid pinching between the saw and large blanks of solid metal, a saw with alternating narrow and wide tooth layout is used.
09 Martha 2017
