|
CUTTING DATA
|
|
|
| Threadturning |
| Cutting speeds The following table gives recommended cutting speeds in feet/min., for different materials and carbide grades. |
| Material | T10/K20 | T10C/K20C | T10R/K20R | C20 |
|---|---|---|---|---|
|
Low-carbon steel
650N/mm² |
180-220
|
210-250
|
180-400
|
|
|
Carbon steel 650-850N/mm²
|
130-190
|
150-210
|
150-350
|
|
|
Alloyed tool steel and heat-resistant steel
|
120-160
|
140-180
|
150-350
|
|
|
Stainless steel
|
70-90
|
90-170
|
110-200
|
150-350
|
|
Cast iron HB 180-250
|
70-90
|
130-170
|
||
|
Non-ferrous materials
|
-400
|
-600
|
| Number of passes The table gives only general recommendations. Many times fewer passes can be used, depending on material and setup. |
| Pitch mm |
0,5
|
0,75
|
1,0
|
1,25
|
1,5
|
1,75
|
2,0
|
2,5
|
3,0
|
3,5
|
4,0
|
4,5
|
5,0
|
5,5
|
6,0
|
| Pitch TPI |
48
|
32
|
24
|
20
|
16
|
14
|
12
|
10
|
8
|
7
|
6
|
5,5
|
5
|
4,5
|
4
|
| Nr. of passes |
4-6
|
4-7
|
4-8
|
5-9
|
6-10
|
7-12
|
7-12
|
8-14
|
10-16
|
11-18
|
11-18
|
11-19
|
12-20
|
12-20
|
12-20
|
| The above recommendations are for full profile UN, ISO
and Withworth external forms. For Trapezoidal,ACME, NPT and internal profiles please contact us. |
| Parting off and Grooving |
| Cutting speeds The following table gives recommended cutting speeds in m/min for different materials. |
| Material | HSSC |
|---|---|
|
Low-carbon steel
650N/mm² |
40-60
|
|
Carbon steel 650-850N/mm²
|
30-40
|
|
Alloyed tool steel and heat-resistant steel
|
30-40
|
|
Stainless steel
|
30-40
|
|
Cast iron HB 180-250
|
20-30
|
|
Non-ferrous materials
|
-200
|
| Feed The following table gives the recommended feed rate in mm/rev, for different inserts. |
| Material | Q16-1,0 | Q16-1,2 | Q16-1,5 | Q25-1,5 | Q25-2,0 |
|---|---|---|---|---|---|
|
Low-carbon steel
650N/mm² |
0,08-0,1
|
0,08-0,1
|
0,1-0,15
|
0,1-0,15 |
0,1-0,2
|
|
Carbon steel 650-850N/mm²
|
0,04-0,06
|
0,05-0,06
|
0,05-0,1
|
0,05-0,1
|
0,08-0,15
|
|
Alloyed tool steel and heat-resistant steel
|
0,04-0,06
|
0,05-0,06
|
0,05-0,1
|
0,05-0,1
|
0,08-0,15
|
|
Stainless steel
|
0,05-0,06
|
0,05-0,06
|
0,05-0,1
|
0,05-0,1
|
0,08-0,15
|
|
Cast iron HB 180-250
|
0,05-0,06
|
0,05-0,06
|
0,05-0,1
|
0,05-0,1
|
0,08-0,15
|
|
Non-ferrous materials
|
-0,2
|
-0,2
|
-0,25
|
-0,25
|
-0,25
|
| Threadmilling |
| Cutting data The following table gives the recommended cutting data for different materials. |
| Material groups | Tensile strength N/mm² |
Cutting speed Vc [m/min] |
Rate of feed fc [mm/Tooth] |
|---|---|---|---|
|
Steel
|
|||
|
Free-cutting Steel
|
< 410 N/mm²
|
130 - 180
|
0,02 - 0,15
|
|
Structural Steel
|
< 740 N/mm²
|
130 - 180
|
0,02 - 0,15
|
|
Carbon Steel
|
< 750 N/mm²
|
120 - 160
|
0,02 - 0,15
|
|
Low-alloy Steel
|
< 750 N/mm²
|
100 - 140
|
0,02 - 0,10
|
|
Tempered steel
|
< 1000 N/mm²
|
80 - 120
|
0,01 - 0,08
|
| High-alloy Steel |
< 1600 N/mm²
|
60 - 100
|
0,01 - 0,08
|
| Steel, hardened | |||
| Steel hardened < HRC 55 |
30 - 60
|
0,01 - 0,10
|
|
| Steel hardened > HRC 55 |
20 - 40
|
0,01 - 0,10
|
|
| Steel, stainless | |||
| Stainless free-cutting steel |
< 750 N/mm²
|
130 - 180
|
0,04 - 0,10
|
| Stainless Steel I |
< 750 N/mm²
|
100 - 140
|
0,04 - 0,08
|
| Stainless Steel II |
< 1150 N/mm²
|
80 - 120
|
0,04 - 0,07
|
| Cast iron | |||
| Cast iron, laminar graphite I |
< 350 N/mm²
|
130 - 180
|
0,05 - 0,15
|
| Cast iron, laminar graphite II |
< 450 N/mm²
|
100 - 140
|
0,03 - 0,1
|
| Tempered cast iron |
< 750 N/mm²
|
80 - 120
|
0,03 - 0,15
|
| Graphite |
500 - 900
|
0,03 - 0,25
|
|
| Aluminium | |||
| Aluminium, AlMg3 |
< 200 N/mm²
|
500 - 900
|
0,05 - 0,25
|
| Aluminium, Si < 0,5% |
< 220 N/mm²
|
400 - 800
|
0,05 - 0,25
|
| Cast aluminium, Si < 11% |
< 260 N/mm²
|
300 - 600
|
0,05 - 0,15
|
| Cast aluminium, Si > 11% |
< 170 N/mm²
|
200 - 400
|
0,05 - 0,15
|
