Technical Analysis:
1. Color Formation: The weld color is the interference color resulting from the reaction of chromium in the stainless steel with oxygen in the air at high temperatures, forming a thin film of chromium oxide on the surface. Different film thicknesses result in different colors. The darker the color, the more severe the oxidation and the greater the loss of chromium.
2. Control Methods:
Backside Protection: For workpieces requiring full penetration, such as pipes and containers, argon gas must be introduced into the back of the weld to prevent internal oxidation.
Drag Shield Protection: A drag shield is installed behind the welding torch to continuously spray argon gas into the still-hot weld and heat-affected zone after solidification, extending the protection time.
Precise Process Parameters: Pulsed TIG/MIG welding reduces heat input. Arc length, welding speed, and gas flow are precisely controlled.
High-Quality Gas: Ensuring the use of high-purity (99.999%) argon.
Robotic Automation Advantages:
Robots perfectly execute all the above requirements: maintaining constant arc length and speed; precisely controlling pulse parameters; and integrating automated drag shield and back gas systems to achieve stable and perfect weld color control that is difficult to achieve manually.
Conclusion: A beautifully colored weld is the best proof of exquisite craftsmanship, excellent equipment, and a sound quality system.
Let us help you achieve the unity of art and science in stainless steel welding. Please contact: Changzhou Anchuang Intelligent Equipment Co., Ltd. Tel/WhatsApp/WeChat: +86 15151971897
Email: nicole@anchuangwelding.com
Website: www.anchuangwelding.com
