After removing the old coating from an aluminum rim, its actual condition is often visible.<\/p>\n\n\n\n
Some rims have only slight oxidation and surface tarnish. Others have deep corrosion spots and pitting that has developed under the paint over many years.<\/p>\n\n\n\n
Automatic shot blasting handles the first group well. However, with the second group, it's important to understand what's actually happening to the material.<\/p>\n\n\n\n
If corrosion occurs on the surface, shot blasting can clean and dull the aluminum very effectively.<\/p>\n\n\n\n
The abrasive removes loose corrosion products and prepares an even surface for the next steps.<\/p>\n\n\n\n
In such conditions, the machine has a big advantage because the entire rim is processed in a repeatable manner.<\/p>\n\n\n\n
The situation is different when corrosion has been developing deep into the aluminum for a long time.<\/p>\n\n\n\n
Pitting is not a layer found only on the surface.<\/p>\n\n\n\n
At such a point, some of the material has already been attacked.<\/p>\n\n\n\n
Therefore, completely \u201eleveling\u201d such a point would require machining the surrounding aluminum as well.<\/p>\n\n\n\n
This is a very important distinction.<\/p>\n\n\n\n
Cleaning the corrosion does not automatically restore the surface to the condition of a new rim.<\/p>\n\n\n\n
The machine affects a large part of the surface evenly.<\/p>\n\n\n\n
So let's assume that the entire rim is already properly prepared, but there is a deep corrosion spot on one spoke.<\/p>\n\n\n\n
The cycle can be extended.<\/p>\n\n\n\n
The problem is that for those extra minutes, the abrasive continues to affect all the areas that no longer require intensive cleaning.<\/p>\n\n\n\n
As a result, attempting to remove one difficult point can lead to unnecessarily aggressive treatment of the entire surface.<\/p>\n\n\n\n
In a cabin sandblaster, the operator can see the problematic area and direct the jet exactly to that spot.<\/p>\n\n\n\n
The remaining parts of the rim do not need to be further processed at this time.<\/p>\n\n\n\n
Therefore, after automatically preparing the entire surface, it may be wise to perform a check and then manually correct only the areas that require additional work.<\/p>\n\n\n\n
automatic \u2192 control \u2192 manual spot correction.<\/strong><\/p>\n\n\n\n Because a shot blasting machine is a surface treatment device, not a device for rebuilding aluminum.<\/p>\n\n\n\n It can clean up corrosion and prepare the metal, but if a deep cavity has already occurred, its geometry may still be visible.<\/p>\n\n\n\n This does not necessarily mean that the device is malfunctioning.<\/p>\n\n\n\n It may simply mean that we are dealing not with a surface coating, but with actual damage to the material.<\/p>\n\n\n\n In practice, combining two ways of working works very well.<\/p>\n\n\n\n The automatic shot blasting machine prepares the vast majority of surfaces without the involvement of an operator.<\/p>\n\n\n\n Once the cycle is complete, the rim is inspected.<\/p>\n\n\n\n If a single spot requires additional cleaning, the operator touches it up manually rather than intensively re-machining the entire rim.<\/p>\n\n\n\n This approach allows you to maintain the efficiency of the machine while maintaining control over areas that require individual attention.<\/p>\n\n\n\n <\/p>","protected":false},"excerpt":{"rendered":" Po zdj\u0119ciu starej pow\u0142oki z felgi aluminiowej bardzo cz\u0119sto dopiero wida\u0107 jej rzeczywisty stan. Jedne felgi maj\u0105 jedynie lekkie utlenienie i powierzchniowy nalot. Inne posiadaj\u0105 g\u0142\u0119bokie punkty korozji oraz w\u017cery, kt\u00f3re rozwija\u0142y si\u0119 pod lakierem przez wiele lat. Automatyczne \u015brutowanie dobrze radzi sobie z pierwsz\u0105 grup\u0105. Przy drugiej trzeba jednak zrozumie\u0107, co tak naprawd\u0119 dzieje […]<\/p>\n","protected":false},"author":2,"featured_media":996,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[25],"tags":[],"class_list":["post-1886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-porady"],"acf":[],"yoast_head":"\nWhy might pitting still be visible after shot blasting?<\/h2>\n\n\n\n
Automatic surface cleaner, manual cabin for difficult spots<\/h2>\n\n\n\n