E-3

TROUbLESHOOTING

E-3

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

PRObLEMS IN TIG WELDING

Oxidation

1. lnsufficient gas.

 

 

2.

No protection on the back side.

 

 

 

 

Tungsten inclusions

1. lncorrect electrode sharpening.

 

 

2.

Electrode too small.

 

 

3.

Operating failure (contact of the

 

 

 

tip with the workpiece).

 

 

 

 

Porosity

1. Dirt on the edges.

 

 

2.

Dirt on the filler material.

 

 

3.

Excessive travel speed.

 

 

4.

Current intensity too low.

 

 

 

 

Hot cracking

1 Unsuitable filler material.

 

 

2.

High heat supply.

 

 

3.

Dirty materials.

 

 

 

 

 

If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

V160-T

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Image 29
Lincoln Electric V160-T, IM738-A manual PRObLEMS in TIG Welding