It usually takes 1.5 year to become a black belt expert and get a certificate by fulfilling the requirements of the training course and completing 3 projects. Black belts have wide range of knowledge about six sigma principles and understand all aspects of the DMAIC model. They are able to use specific tools in order to improve the process, solve problems, make good decisions and get effective and sustainable results. Six Sigma is powerful - it can improve the process, it can save lots of money for the company, and it can bring the people together.
It is important to mention that there are stages of six sigma which are inevitable. For example, we always need to select priorities, what our aims are, what we would like to achieve, which problem needs to be sorted out first that has the biggest impact on the company. We need to create a project charter with our purpose, business case, key players, scope, enablers and barriers. We need to form the team. We need to create a SIPOC in order to be able to see the process more clearly. We need to collect as much data as possible so as to be able to learn about the process. We need to review the process, so we can find solutions to different problems. After the data collection, we can use control charts, histogram, or cause and effect diagram to diagnose the problems of the process. We can run experiments to see which solution would be the best option to sort out one specific problem. We can take actions, implement solutions and review the process again.
A successful six sigma project has lots of benefits: achieved goals, reduced costs and waste, improved process, team empowerment, motivation and rewards.