{"id":663,"date":"2018-03-08T14:34:43","date_gmt":"2018-03-08T13:34:43","guid":{"rendered":"https:\/\/cfdfeaservice.it\/?p=663"},"modified":"2018-02-28T14:35:51","modified_gmt":"2018-02-28T13:35:51","slug":"rugosita-nelle-lavorazioni-meccaniche","status":"publish","type":"post","link":"https:\/\/cfdfeaservice.it\/index.php\/2018\/03\/08\/rugosita-nelle-lavorazioni-meccaniche\/","title":{"rendered":"Rugosit\u00e0 nelle lavorazioni meccaniche"},"content":{"rendered":"

Ogni superficie, a prescindere dal tipo di lavorazione che subisce, non coincide mai con la superficie geometricamente perfetta generata dal CAD o modellatore solido. Se esaminiamo nel dettaglio una superficie \u00e8 possibile notare una successione di “creste” e “valli”. Il grado di rugosit\u00e0 richiesto per una superficie, dipendente dalla funzione cui \u00e8 destinato il pezzo, influenza un certo numero di fattori tra i quali: l’attrito, la resistenza alla corrosione, la resistenza a fatica.<\/p>\n

Prima di proseguire nel dettaglio focalizziamoci su due definizioni: superficie ideale, ovvero quella cui il pezzo in lavorazione dovrebbe tendere, e superficie reale, ovvero quella ottenuta dalle varie lavorazioni di tornitura, fresatura, levigatura, lappatura etc. A queste si aggiunge la superficie media, ovvero quella restituita dal pattino del tastatore. Tutte le irregolarit\u00e0 geometriche vengono classificate in errori di forma, differenza tra superficie media e superficie ideale, ed errori microgeometrici.<\/p>\n


\n\"\"<\/a><\/center><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\n
Rugosit\u00e0<\/div>\n

<\/center><\/p>\n
Ra (\u00b5m)<\/div>\n

<\/center><\/p>\n
<\/div>\n

 <\/td>\n

\n
UNIM 36*<\/div>\n<\/td>\n
\n
Superficie<\/div>\n<\/td>\n
\n
UNI 4600<\/div>\n<\/td>\n<\/tr>\n
<\/center><\/p>\n
Con<\/div>\n

<\/center><\/p>\n
asportazione<\/div>\n

<\/center><\/p>\n
di truciolo<\/div>\n

 <\/td>\n

<\/center><\/p>\n
Senza<\/div>\n

<\/center><\/p>\n
asportazione<\/div>\n

<\/center><\/p>\n
di truciolo<\/div>\n

 <\/td>\n<\/tr>\n

\n
0.025<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

\n
–<\/div>\n<\/td>\n<\/tr>\n
\n
0.05<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

\n
–<\/div>\n<\/td>\n<\/tr>\n
\n
0.1<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

\n
–<\/div>\n<\/td>\n<\/tr>\n
\n
0.2<\/div>\n<\/td>\n
\n
\"\"<\/div>\n<\/td>\n
\n
Superfina<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
0.4<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
0.8<\/div>\n<\/td>\n
\n
\"\"<\/div>\n<\/td>\n
\n
Rettificata<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
1.6<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
3.2<\/div>\n<\/td>\n
\n
\"\"<\/div>\n<\/td>\n
\n
Lisciata con utensili<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
6<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
12.5<\/div>\n<\/td>\n
\n
\"\"<\/div>\n<\/td>\n
\n
Sgrossata con utensili<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
25<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n

\n
50<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n

\n
Grezza liscia<\/div>\n<\/td>\n
\n
–<\/div>\n<\/td>\n
<\/center><\/p>\n
\"\"<\/div>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n

<\/left><\/p>\n

Vecchi segni convenzionali di rugosit\u00e0 UNIM 36.<\/h3>\n

Prima dell’avvento dei rugosimetri esistevano tavolette con campioni di rugosit\u00e0\u00a0 dove l’operaio, con il dito, comparava la rugosit\u00e0 della tavoletta con la lavorazione eseguita.<\/left><\/p>\n<\/div>\n

\n
Tabella della rugosit\u00e0 unificata<\/div>\n<\/div>\n


\n
<\/center><\/center><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ra<\/span><\/b>\u00a0<\/center><\/td>\n

\nRugosit\u00e0 Max.Rz<\/b><\/span><\/span> <\/p>\n

<\/center><\/td>\n


\nRugosit\u00e0 media su 10 pt Rz<\/b><\/span><\/span> <\/p>\n

<\/center><\/td>\n<\/tr>\n

\n
standard<\/span><\/div>\n

 <\/td>\n

\n
valore di asportazione \u03bbc(\u00b5m)<\/span><\/span><\/div>\n

 <\/td>\n

\n
standard<\/span><\/div>\n

 <\/td>\n<\/tr>\n

0.012 a<\/span><\/span><\/td>\n0.08<\/span><\/span><\/td>\n0.05 s<\/span><\/span><\/td>\n0.05 z<\/span><\/span><\/td>\n<\/tr>\n
0.025 a<\/span><\/span><\/td>\n0.25<\/span><\/span><\/td>\n0.1 s<\/span><\/span><\/td>\n0.1 z<\/span><\/span><\/td>\n<\/tr>\n
0.05 a<\/span><\/span><\/td>\n0.2 s<\/span><\/span><\/td>\n0.2 z<\/span><\/span><\/td>\n<\/tr>\n
0.1 a<\/span><\/span><\/td>\n0.8<\/span><\/span><\/td>\n0.4 s<\/span><\/span><\/td>\n0.4 z<\/span><\/span><\/td>\n<\/tr>\n
0.2 a<\/span><\/span><\/td>\n0.8 s<\/span><\/span><\/td>\n0.8 z<\/span><\/span><\/td>\n<\/tr>\n
0.4 a<\/span><\/span><\/td>\n1.6 s<\/span><\/span><\/td>\n1.6 z<\/span><\/span><\/td>\n<\/tr>\n
0.8 a<\/span><\/span><\/td>\n3.2 s<\/span><\/span><\/td>\n3.2 z<\/span><\/span><\/td>\n<\/tr>\n
1.6 a<\/span><\/span><\/td>\n6.3 s<\/span><\/span><\/td>\n6.3 z<\/span><\/span><\/td>\n<\/tr>\n
3.2 a<\/span><\/span><\/td>\n2.5<\/span><\/span><\/td>\n12.5 s<\/span><\/span><\/td>\n12.5 z<\/span><\/span><\/td>\n<\/tr>\n
6.3 a<\/span><\/span><\/td>\n25 s<\/span><\/span><\/td>\n25 z<\/span><\/span><\/td>\n<\/tr>\n
12.5 a<\/span><\/span><\/td>\n8<\/span><\/span><\/td>\n50 s<\/span><\/span><\/td>\n50 z<\/span><\/span><\/td>\n<\/tr>\n
25 a<\/span><\/span><\/td>\n100 s<\/span><\/span><\/td>\n100 z<\/span><\/span><\/td>\n<\/tr>\n
50 a<\/span><\/span><\/td>\n200 s<\/span><\/span><\/td>\n200 z<\/span><\/span><\/td>\n<\/tr>\n
100 a<\/span><\/span><\/td>\n–<\/span><\/td>\n400 s<\/span><\/span><\/td>\n400 z<\/span><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n


\n\"\"<\/a><\/center><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/b><\/center><\/p>\n
Relazione tra tipo di lavorazione e Ra<\/div>\n

 <\/td>\n<\/tr>\n

<\/b><\/center><\/p>\n
Tipo di lavorazione<\/div>\n

 <\/td>\n<\/tr>\n

<\/b><\/center><\/p>\n
Classe di rugosit\u00e0<\/div>\n

 <\/td>\n<\/tr>\n

<\/td>\n\n
N1<\/div>\n<\/td>\n
\n
N2<\/div>\n<\/td>\n
\n
N3<\/div>\n<\/td>\n
\n
N4<\/div>\n<\/td>\n
\n
N5<\/div>\n<\/td>\n
\n
N6<\/div>\n<\/td>\n
\n
N7<\/div>\n<\/td>\n
\n
N8<\/div>\n<\/td>\n
\n
N9<\/div>\n<\/td>\n
\n
N10<\/div>\n<\/td>\n
\n
N11<\/div>\n<\/td>\n
\n
N12<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n
<\/b><\/center><\/p>\n
Ra in \u03bcm\u00a0 \u00a0frequente<\/span> <\/span> meno frequente<\/span><\/div>\n

<\/span><\/td>\n<\/tr>\n

<\/td>\n\n
0,006<\/div>\n<\/td>\n
\n
0,02<\/div>\n<\/td>\n
\n
0,025<\/div>\n<\/td>\n
\n
0,05<\/div>\n<\/td>\n
\n
0,1<\/div>\n<\/td>\n
\n
0,2<\/div>\n<\/td>\n
\n
0,4<\/div>\n<\/td>\n
\n
0,8<\/div>\n<\/td>\n
\n
1,6<\/div>\n<\/td>\n
\n
3,2<\/div>\n<\/td>\n
\n
6,3<\/div>\n<\/td>\n
\n
12,5<\/div>\n<\/td>\n
\n
25<\/div>\n<\/td>\n
\n
50<\/div>\n<\/td>\n
\n
100<\/div>\n<\/td>\n
<\/td>\n<\/tr>\n
\n
Colata di sabbia<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Colata in guscio<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Colata in conchiglia<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Pressofusione<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Microfusione<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Stampaggio a caldo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Laminazione a caldo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Laminazione a freddo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Rullatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Trafilatura a freddo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Stampaggio,estrusione a freddo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Estrusione a caldo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Sinterizzazione (pezzi non por.)<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Coniatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Sabbiatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Barilatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Piallatura,limatura,stozzatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Tornitura longitudinale,pelatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Tornitura a sfacciare<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Tornitura a tuffo<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Fresatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Fresatura chimica<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Trapanatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Alesatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Elettroerosione<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Brocciatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Rettifica piana<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Rettifica cilindrica<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Rettifica elettrolitica<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
\n
Levigatura,lappatura,lucidatura<\/div>\n<\/td>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n\n
0,006<\/div>\n<\/td>\n
\n
0,02<\/div>\n<\/td>\n
\n
0,025<\/div>\n<\/td>\n
\n
0,05<\/div>\n<\/td>\n
\n
0,1<\/div>\n<\/td>\n
\n
0,2<\/div>\n<\/td>\n
\n
0,4<\/div>\n<\/td>\n
\n
0,8<\/div>\n<\/td>\n
\n
1,6<\/div>\n<\/td>\n
\n
3,2<\/div>\n<\/td>\n
\n
6,3<\/div>\n<\/td>\n
\n
12,5<\/div>\n<\/td>\n
\n
25<\/div>\n<\/td>\n
\n
50<\/div>\n<\/td>\n
\n
100<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/center><\/p>\n\n\n\n
<\/b><\/center><\/p>\n
Formule risolutive per calcolare la rugosit\u00e0 di Ra, Rz, Rz media<\/div>\n

 <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/center><\/p>\n\n\n\n\n\n
\n
Ra<\/div>\n<\/td>\n
\n
Rz<\/div>\n<\/td>\n
\n
Rz media<\/div>\n<\/td>\n<\/tr>\n
\n
\"\"<\/div>\n
\n
\"\"<\/div>\n<\/div>\n<\/td>\n
 <\/p>\n
\n
Rz=Rp+Rv<\/div>\n<\/div>\n<\/td>\n
\n
\"\"<\/div>\n<\/td>\n<\/tr>\n
\"\"<\/a><\/td>\n
\"\"<\/a><\/center><\/td>\n
\"\"<\/a><\/center><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

_________________________________<\/strong><\/p>\n

CFD FEA Service SRL<\/strong> è una società di servizi che offre consulenza<\/em> e formazione<\/em> in ambito ingegneria<\/strong> e IT<\/strong>. Se questo post\/prodotto ti è piaciuto ti invitiamo a:<\/p>\n