The content of chromium in human body is generally 20 micrograms per liter of blood. When chromium exceeds the standard seriously, it will cause damage to organs such as liver, kidney and lung. Hexavalent chromium is mainly a chronic poison to human beings. It can invade the human body through the digestive tract, respiratory tract, skin and mucous membrane. When it invades the human body through the respiratory tract, it begins to invade the upper respiratory tract, causing rhinitis, pharyngitis, laryngitis and bronchitis. In severe cases, it can lead to cancer and gene mutation. .....
Therefore, when welding stainless steel, we should pay attention to strengthening labor protection.