JOINING PROCESS MONITORING AND CONTROL PPT

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Content :

• JOINING PROCESS
• DIFFERENT JOINING PROCESS
• WELDING JOINING PROCESS
• WELDING DEFECTS
• QUALITY MONITORING AND CONTROL OF A SPOT WELDING PROCESS
• CONCLUSION

Joining Process:

Joining processes are very important in design and manufacturing:

• They play an important role in the selection of the overall manufacturing process and in design.
• They can make a significant contribution to the overall cost
•  Joints can be sources of failure

Welding defects:

Fusion Welding	Arc Welding Processes
The melting together and coalescing of materials by means of heat. The heat is usually supplied by chemical or electrical means. Filler metals may or may not be used	The required heat is obtained from electrical energy. The process involves a consumable or a non-consumable electrode. An AC or DC power supply produces an arc between the tip of the electrode and the work-piece to be welded. The arc generates temperatures of 30,000oC (50,000oF).

THE ON-LINE MONITORING SYSTEM USED TO ACQUIRE WELDING PARAMETERS WAS COMPOSED OF COMMERCIAL COMPONENTS.

ITS KEY COMPONENTS ARE:

• Voltage module
• Current module
• Hall effect current sensor
• Signal conditioner backplane to accommodate the voltage and current modules and a power supply
• A/D converter
• Flat cable
• PC with suitable software for data measuring, recording, and processing 

APPLICATIONS OF THE JOINING PROCESS MONITORING SYSTEM ARE:

• calibration and characterization of the welding power source
• selection of optimal filler material based on comparing various products
• determination of optimal welding parameters for a given welding method
• determination of heat input with higher precision
• development of new base materials and fillers
• welding parameter control for automatic welding methods

Image Source: Kistler