The process of joining the ends of band saws is one of the most time-consuming.
It is extremely difficult to achieve the highest seam strength so that it does not differ from the main fabric and is identical in strength.
The process of joining the ends of band saws is one of the most time-consuming.
It is extremely difficult to achieve the highest seam strength so that it does not differ from the main fabric and is identical in strength.
There are two methods: Contact butt welding; Soldering.
Contact butt welding The mechanism of action consists in the fact that both webs are clamped in special devices, and the ends are joined.
With the help of electrodes, an electric current is passed through the joint, which melts the ends, connecting them into a single web.
The machines are divided into semi-automatic and automatic.
During the operation of the first, the process is controlled by an operator who sets the current strength and the time of the seam connection.
Fully automatic machines exclude human intervention.
Welding stages of band saws: The web is being cut.
Stripping and degreasing the ends of the saw to a flat surface, excluding irregularities.
The finished cloth is clamped in the machine.
One end is stationary, the other is movable for more precise docking, eliminating mismatches.
Connecting the electrodes to the joint and passing an electric current through it.
The annealing process is carried out in the same position, but with a different current strength.
Gives the seam strength and viscosity.
Stripping and grinding gives the material the aesthetic appearance of a full-fledged tool.
Soldering of band saws The connection of the web using high temperatures.
The method is widely used at home.
The main course of action: The cloth is cleaned of dust, dirt and possible plaque; Solders are prepared (PSr-45, PSr-65); Flux is prepared (specialized paste-like); Before direct soldering, the ends of the cloth are clamped in a special device so that the joint perfectly matches.
Soldering is performed with a gas burner at a temperature of 800 degrees (the exact temperature depends on the brand of solder); The joint is cleaned.
You can watch a video of the welding process on the main page of our website.
09 Martha 2017
