putty and abrasion are usually used in the process of completing metal or wood surfaces, whether in the construction of the machine itself or in the parts they bend. In the construction of the bending machine, if the body or metal components require staining or smoothness, the surface is first filled with putty to cover the roughness and seams. And after drying, it is smooth and smooth. Abandonment is also done by manual or electric tools to make the surface completely polished and ready to color or final cover.
Savings Target
Slimming surface: Next By bending the metal sheet or working with the bending machine, the edges may be sharp, rough or full of scratches. The abrasion removes this defect.
The preparation for the cover: If the piece is to be painted or coated, the sanding helps to make the surface completely uniform and the paint to stick better.
Remove rust or extra material: In metals, sometimes rust or putty remains need to be wiped out
2. Types of abrasives
Sensor Paper: Paper or fabric sheets covered with abrasive beans (such as aluminum oxide or carbide silicone). There are various numbers (eg 80, 120, 400), the higher the number, the smaller the seeds and the smoother surface.
Electric abrasives: Tools such as trembling abrasives or strips that are excellent for larger and faster tasks. In industrial workshops that work with bending machine, this is the most common.
Manual abrasive: for delicate places or small edges that have access to the device.
3. Absorition Steps
Coarse (coarse grain): If the surface is too rough (for example, after bending the metal with scratching edges), they start with rough sanding (such as 80 or 120) to eliminate large roughness.
Moderate abrasive: Then they continue with a higher number (like 220) to wipe the rough sanding lines. The 400 -and -ups are used to make the surface shiny and ready to color or assembly. In metals, they sometimes work a circle.