Laser surface alloying, that is, when the laser beam scans the workpiece surface with metal or alloy powder added, the workpiece surface and the added elements melt at the same time; When the laser beam is withdrawn, the molten pool solidifies quickly to form a crystal structure similar to the extremely cold metal, forming a new alloy layer with some special properties. The laser power density required by laser surface alloying is much higher than that required by laser transformation hardening. The depth of laser and evolution is determined by laser power density and workpiece moving speed.
The technological process of laser surface cladding is similar to that of laser surface alloying, but there are differences in principle: laser cladding does not use the molten metal on the substrate as the solvent, but melts the separately configured alloy powder laser cutting machine to make it the main alloy of the cladding layer. At the same time, the substrate alloy also has a thin layer of melting to combine with it. The laser cladding alloy system has high performance that the matrix does not have, thus expanding the metal surface strengthening technology.
In laser processing technology, such as laser cladding, laser surface alloying and laser surface amorphization are accompanied by mass transfer processes. Mass transfer refers to the phenomenon that matter moves from one place to another in object and space. During laser surface alloying:
The laser action time is very short, and the whole mass transfer includes the mass transfer under the laser action and the mass transfer in the thermal lag period after the end of the laser. Obviously, mass transfer in a very short time is far from the equilibrium condition of the laser cutting machine, so the solute generated by mass transfer will be distributed.
Metal laser cutting machine is a high-tech product invented in the era of rapid industrialization. Its advanced processing technology has been widely used in various industries. The birth of laser cutting machine has laid a foundation for industrial development. However, when using the metal laser cutting machine, many operators will find that the water temperature of the metal laser cutting machine rises too fast. We all know that water plays a key role in the metal laser cutting machine.
Then, what causes the water temperature of the metal laser cutting machine to rise rapidly
We all know that the laser cutting machine needs a lot of water to cool the high temperature in the laser tube to ensure the normal use and service life of the laser tube. However, when the laser cutting machine is used normally, the water temperature in the cooling water tank is easy to be too high. Especially in summer, the laser cutting machine will overheat in just 2 hours.
If it is not replaced in time, the power of the laser tube will decrease significantly. Furthermore, cold water installations are particularly important. The cooler of the laser cutting machine must be maintained regularly to ensure that the machine is in good condition. In case of any fault, please remember not to deal with it by yourself, but ask professional technicians for maintenance, and do not disassemble the machine by yourself.
Clean the radiator regularly. The cleaning method is as follows: carefully brush the radiator with a brush, and then blow it off with compressed air. If necessary, use a special cleaner for cleaning and flushing.
