Machining stainless steel is not too difficult, but it can present many machine shops with some unique problems. If you haven’t done a lot of work with metals like 304 or 316 stainless steel, you could have some difficulties, and it may take some trial and error issues until you get it right. Here are some helpful tips to simplify the process.
Thread Tapping
Thread tapping 304 can be difficult because it is hard. However, to make the process easier, consider pre-drilling the holes first. This can make threading faster and smoother. Also, you’ll put less strain on your cutting edges, and they will last longer.
Turning 316
If you need to turn 316 stainless steel, you can use high-speed steel cutting tools. However, the process is easier when you use sharper and harder tools like tungsten carbide. Carbide is harder than HSS and will stay sharp longer too. However, it does cost more than HSS.
The Benefits of Straight Oil Coolants
If you use coolants made from one-hundred percent petroleum products, you’ll receive excellent lubrication. They cost more than many other coolant types, but they can prolong tool life. Because stainless steel machining can be difficult, straight oils make the process a little easier because they lubricate so well. You’ll enjoy many more benefits with this kind of coolant. For example:
* Excellent corrosion protection
* Can be used on superalloys
* Resists bacterial contamination
* Good for sump pumps
Keep an Eye on Cutting Tools
It’s very important to make sure your cutting tools stay sharp. Even carbide tools will eventually dull, and you may need to sharpen or replace your cutting tools more often if you plan on machining stainless steel. If your shop only works with stainless steel occasionally, you may want to consider using a trusted machine shop that specializes in hard to work with metals.
