Stainless steel is a popular material due to its strength and corrosion resistance. However, this material can develop defects, such as cracks, if it isn't machined carefully. This article discusses some of the tips that you should implement when machining stainless steel so that it remains free from defects.
Use Lubricants and Coolants
Stainless steel is very hard. Machining this material can therefore shorten equipment life if precautions aren't taken to reduce the wear and tear on the machining equipment. One of the easiest precautions in this regard entail using lubricants and coolants during the machining process. These substances will keep the workpiece and the tools cool throughout the machining process. In this way, equipment wear will be slowed down.
Select Large Tools
Stainless steel is easily work hardened as it is machined. Such work hardening can cause the products made to be brittle if the hardening exceeds the desired level. You can keep this work hardening in check by using large machining tools. Such tools will have a large surface area in which the heat generated by the machining process will be dissipated. The workpiece and the equipment will therefore stay cooler than it would if a smaller tool were used to machine the stainless steel.
Keep Vibrations Minimal
Vibrations during the machining process can also affect the structural integrity of stainless steel. For example, the vibrations can cause the molecules of the material to develop gaps as you are welding or cutting the stainless steel. Cracks will later develop in those areas where the molecular structure was affected by the intense vibrations. Avoid such defects by anchoring the workpiece well so that it doesn't vibrate a lot during the machining process.
Use Sharp Tools
You should also ensure that the cutting edges of your machining tools are sharp before you start machining stainless steel. Blunt tools create an opportunity for excessive heat to be generated during the machining process. Excessive heat comes with the risks that were discussed earlier. Stress cracking is one of those risks. Avoid such blemishes in your stainless steel products by using sharp tools when working with stainless steel.
Stainless steel is available in different grades, such as those with a high temperature and corrosion resistance and those which contain manganese instead of chromium. Discuss your needs with a stainless steel supplier so that you can get professional help in selecting the best grade for your application. Contact a stainless manufacturing company for additional information.
