What's orange peel?
This is not the orange peel that is commonly referred to in aesthetics or when painting, but rather an unsmooth surface defect that can be encountered when polishing. Orange peel is a rough surface appearance of sheet metal after molding, and will appear like an orange surface appearance defect.
How does orange peel come about?
Orange peel is one of the most common problems that polishers have to deal with. Orange peel occurs from the steel on the microscopic hardness of the high and low, the hardness is high and low by the uniformity of the metallurgical organization, the reason why the metallurgical organization is not uniform is from the microscopic distance on the composition of the segregation; ingredients are most of the asada loose iron, fat grain iron and Polaroidal iron and other products, the composition of the segregation of the large forging block can not be wiped away nightmare ~ 100 percent of the certainty of, the case of the serious or not the serious difference only. The correlation between mold toughness and segregation is the strongest.
Below is a metallographic photo of 2344 Polarization. The dark place is high composition (carbon and alloy concentration is too high) there are a lot of carbide particles (needle-like hemp field scattered iron), the brighter place normal (fat grain iron) when polishing,dark place is more wear-resistant, the removal rate is slower, the brighter place is more wear-resistant, the removal rate is faster, which results in the surface of the surface metal removal rate is not uniform, therefore, the surface is uneven, reflective. The surface is uneven,wpml_nbsp reflecting the so-called “orange peel” Orange peel.
What can I do about orange peel?
There are two ways to solve this problem, one is to go back to the sandpaper program, regrind to remove the orange peel, and then regrind and polish again. The second method is to use a firm backing plate with high grade abrasives for orange peel removal. Both methods require the use of extremely high grade abrasive particles because only when the cutting ability of the abrasive particles is sufficiently strong can the workpiece be cut evenly, ensuring that the amount of workpieces removed is always uniform regardless of whether the workpiece encounters a hard or soft material, which ensures that the structure of the micro-pitch is in a flat state with no elevation difference, so that there will naturally be no orange peel in the reflection.
