Scaling

Pickling.

Pickling is a process by which "cleaned? element surfaces prior to applying a paint or coating including those generated by a galvanic process.

This task can be performed manually or assisted with special teams, when done manually, it is verified with the help of abrasives such as sandpaper or wire brush, etc. This method is effective when dealing with very small layer pollutants, and when the dimension of the piece is small, so when the application is industrial, hand sanding is done automatically, with pleasing grinders or wire brushes, Waterblast machines, sandblasting, cleaning or cavitation.

Also important are the immersion pickling or acidic chemicals which "cleaned? the piece by removing traces of grease or dust are also called chemical wash.

When talking about electric toothbrushes, whose main representative is those who are rotating, since due to its easy replacement and excellent results, has a wide application, particularly in relation to retired welding slag, since part this activity to the board massage and release certain proportion of the tensions associated with welding, also entering the corners, very difficult place to clean and in many cases the use of these items is limited to those regions are not homogeneous and difficult to access.

In regard to Waterblast and sand blasting, these systems take advantage of the forced motion of a fluid usually water or air, for projecting abrasive particles to the surface to be cleaned, in the case of hidroblanting, it is possible to dispense of these particles, but for the sand blasting is essential in both cases using a venturi that sucks them and the projected speeds in some cases approaching that of sound, these are usually metal or sand granules, as is evident in these two cases, it requires pumps and compressors that can deliver the required flow and pressure and nozzles that are not damaged by abrasion is usually found in very hard materials such as tungsten carbide, it nozzles are interchangeable and are coded according to the degree of convergence required.

As is evident not these processes can be performed without adequate protection, which should be whole body, with clean air insufflation (sandblasting) as silica and other minerals produce disease in the lungs, as well as the rebound of particles strongly attacks the skin and eyes (Sand Blasting), noise is another agent avoided as working hours imply the presence of this large extent should be available also for protection appropriate.

In the case of Waterblast, the operator needs a place that can adequately evacuate this fluid, as well as the respective waterproofing fluid pressures may exceed 1000 psi, enough pressure to cut the tissues of the body, so protection proper body is essential, as well as operating procedures, properly regulated and reviewed.