TIG,MMA

The weld bead produce from DCRP TIG process would be ?

• Narrow

• Wide

• Moderate

• same with DCEN

The Tungsten electrode which has red colour in the tip mean consit of

• Thorium

• Cerium

• Zincronium

• Lanthalum

The polarity in TIG welding which has no cathodic cleaning action is

• DCEN

• DCEP

• AC

• All polarity have cathodic cleaning

ER 308L , the letter "L" is describe?

• Low Hydrogen

• Low Carbon

• Low Temperature

• Low strength

The Problem Burning Through Tungsten Faster possibility comes from?

• inadequate gas flow

• Operating in DCEP

• Tungsten Oxidation during cooling

• All answers are correct

Electrode with specification E7018 , the '1' is describe?

• can be used for 1G or Flat only

• can be used for all position

• the chemical composition

• can be used for horizontal position only

The following is regarded as cellulose electrode

• E7010

• E6013

• E7016

• E7015

The excessive spatter in MMA Welding probably caused by

• Voltage too high

• Ampere too low

• Arc length too short

• No answers correct

MMA electrode with specification ISO ISO 2560-A E42 2 B 1 2, the under line (42) meaning ?

• Tensile strength minimum 420 Psi

• Tensile strength minimum 420 MPa

• Yield strength minimum 420 MPa

• Yield strength minimum 420 Psi

The electrode E7016, '70' describe

• Tensile Strength min. 70 MPa

• Tensile Strength min. 70 Psi

• Tensile Strength min. 70 ksi

• Tensile Strength min. 70.000 Mpa