1. RESISTANCE WELDING
• Resistance Welding is a welding process, in which work pieces are
welded due to a combination of a pressure applied to them and a
localized heat generated by a high electric current flowing through the
contact area of the weld.

2. APPLICATION IN AUTOMOBILE
• USE
Spot welding is widely used in automotive
industry for joining vehicle body parts.

3. •TYPES
RESISTANCE WELDING
PERCUSSION
WELDING
SEAM WELDING
FLASH WELDING
PROJECTION
WELDING
SPOT WELDING
UPSET WELDING
HIGH
FREQUENCY
RESISTANCE
WELDING

4. The following metals may be welded by
Resistance Welding
• Low carbon steels - the widest application of Resistance Welding
• Aluminum alloys
• Medium carbon steels, high carbon steels and Alloy steels (may be
welded, but the weld is brittle)

5. Advantages of Resistance Welding
• High welding rates;
• Low fumes;
• Cost effectiveness;
• Easy automation;
• No filler materials are required;
• Low distortions

6. Disadvantages of Resistance Welding
• High equipment cost;
• Low strength of discontinuous welds;
• Thickness of welded sheets is limited - up to 1/4” (6 mm);

7. ANALYSIS OF ENERGY SOURCE