acetal machining components

Acetal/POM Machining Overview

Acetal or POM is a very common and widely used engineering plastic. It shows good mechanical properties, self lubricating, good machinability, and good dimensional stability. This material do not need extra preprocess when machining it. Also the carbide bit is recommended and should always kees bit sharp. 

Acetal/POM Machining Guide

POM Sawing
plastic sawing

Material 

Rotate Speed [rpm]

Circular Pitch

Acetal Virgin

2800~3000

31~38

Acetal Modified

2400~2800

20~24

POM Drilling

Material 

Number of Teeth

Helix Angle

Approach Angle

Cutting Speed

[rpm]

Feed Force

[mm/r]

Acetal Virgin

Z2

25

90

50~150

0.1~0.3

Acetal Reinforced

Z2

25

100

80~100

0.1~0.3

Note: Only for Keward Plastics. 

POM Milling
plastic milling

Material 

Number of Teeth

Cutting Speed

[rpm]

Feed Force

[mm/r]

Acetal Virgin

Z2~Z4

300

0.15~0.5

Acetal Reinforced

Z2~Z4

80~150

0.05~0.4

POM Turning

Material 

Relief Angle

Approach Angle

Corner

Cutting Speed

[rpm]

Feed Force

[mm/r]

Acetal Virgin

6~8

0~5

45~60

300~600

0.1~0.4

Acetal Reinforced

6~8

2~8

45~60

80~150

0.1~0.5

Note: Only for Keward Plastics.

Acetal/POM Heat Treatment

Material 

Heating

Keeping

Cooling

Acetal

3h heating to 90℃, then 3h heating to 155℃

1h/10mm thickness

cooling to 40℃ at speed of 20℃/h

Note: Only for Keward Plastics. The heat treatment above is a rough numbers, and only suit for the components which the thickness is less than 50mm. If the thickness is larger than 50mm, Please Send Us Email.