The harm of the robot arc welding workstation to the human body mainly comes from two aspects.
On the one hand, the welding itself is harmful to people.
On the other hand, the mechanical equipment such as moving robots and positioners are potentially dangerous in their range of motion.
The following two aspects of the hazard are introduced separately.
Harm caused by welding
(1) Welding arc
When welding, strong arcing can cause acute and chronic damage to the eyes and skin.
Excessive exposure of the eye to ultraviolet light in the arc causes keratoconjunctivitis.
Lighter eyes have foreign body sensation and mild discomfort. In severe cases, there are burns and severe pain in the eyes, accompanied by symptoms such as photophobia, tearing, and facial paralysis.
(2) Welding fumes and toxic gases
When welding, the welding wire, welding rod and coating produce a large amount of harmful smoke under the action of high temperature.
The main components of these soots are iron, aluminum, manganese, etc.
Air generates toxic gases such as nitrogen oxides under the action of arc light.
Once people inhale such metal dust and toxic gases for a long time, they are very harmful to the human body.
Mechanical damage caused by safety failure
Safety failure refers to unforeseen failure of components or a component when the robot and its system are actually operating.
These should be considered when designing the system.
If a function is suspended, the entire system is still in a safe state and should provide a means of operation that ensures safety (eg, locking) to select devices or measures to prevent self-starting.