News

CNC Machining Stainless Steel Parts

When doing the CNC machining stainless steel , factors such as material hardness, cutting performance, and tool wear need to be considered. Here is a detailed CNC machining guide for stainless steel materials:

1.Material selection and understanding:

1.1 Stainless steel type:

There are multiple types of stainless steel, including austenitic stainless steel (such as 304, 316) and martensitic stainless steel (such as 440C).

Choose the appropriate type of stainless steel based on the specific corrosion, strength, and temperature requirements of the application.

1.2 Hardness:

Stainless steel is usually harder, so choosing the appropriate cutting tools and cutting parameters is key.

2.Tool selection and preparation:

2.1 Hard alloy cutting tools:

Choose wear-resistant hard alloy cutting tools, such as tungsten cobalt alloy, to cope with the hardness of stainless steel.

2.2 Tool Coating:

PVD coatings, such as TiN (titanium nitride) or TiAlN (titanium aluminum nitride), can improve tool wear resistance and extend service life.

3.Optimization of cutting parameters:

3.1 Cutting speed:

Choose an appropriate cutting speed, usually low, to avoid tool wear and material hardening caused by overheating.

3.2 Feed rate and depth:

Control feed rate and cutting depth, balance material removal rate and tool life.

3.3 Cooling and Lubrication:

Use sufficient coolant and lubricants to reduce temperature, extend tool life, and improve surface quality.

4.Numerical control programming and machine tool settings:

4.1 Tool Path Planning:

Optimize CNC programming to ensure that the tool path avoids excessive cutting impact and reduces vibration.

4.2 Fixing and clamping:

Use sturdy fixtures and appropriate clamping force to ensure the stability of the workpiece.

5.Surface treatment and finishing:

5.1 Deburring:

Remove burrs from processed stainless steel parts to ensure a smooth surface that meets quality requirements.

5.2 Polishing:

For special appearance requirements, polishing treatment can be carried out to improve the surface gloss of stainless steel.

6.Quality control:

6.1 Dimensional measurement:

Use precision measuring tools to check the dimensions of machined parts to ensure compliance with design requirements.

6.2 Surface Inspection:

Visually inspect the stainless steel surface to ensure there are no scratches, flaws, or other defects.

7.Document recording and traceability:

7.1 Record Parameters:

Record key information such as CNC machining parameters, tool specifications used, and cutting conditions.

7.2 Tracing materials:

Ensure material traceability, including specific grades and batches of stainless steel.

This stainless steel CNC machining guide covers the entire process from material selection to final part quality control, helping to ensure high-quality stainless steel parts manufacturing.