Fabrication rule on site

Fabrication Rule on SiteWelding place

Welding executionBasic fabrication rule

Fabrication Rule on Site : Workplace

Arrange place for welding machine close to the units (not to long welding cable)

Arrange power points for Hand machine such Drill machine Grinding machine etc

Prepare a Tool container Prepare workplace table with vice Arrange ladder and working platform Hold your working place CLEAN

Fabrication Rule on Site : Workplace

Arrangement of the welding machine and Welder PPI

Fabrication Rule on Site : Workplace

Not like that!!!

Fabrication Rule on Site : Workplace

Arrangement of the welding cable and Place

Not like that

Fabrication Rule on Site : Tools

Don’t use tools like that

Fabrication Rule on Site : Welding

Welding Rule for Site work

Good welding preparation Good welding current Take off slag after welding Brush the welding layer Control your welding If necessary repair

Fabrication Rule on Site : Welding

Welding Rule for Site work - Welding preparation

Grinding the edgesGive space between edgesElectrode diameter=Gap Don’t do like

That

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding current

Correct Current To High Current To low Current

Take your Time to adjust the right welding currentThat safe a lot of Time later

Easy welding Less repair work GOOD WELDING QUALITY

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding current

Correct Current

Over head welding less currentTop welding normal currentRise up welding less current

Guide Number: diameter electrode by 40 = welding current

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding current

Steel Plate T > 3mm less currentSteel Plate T =8…10mm normal currentSteel Plate T > 10mm more current

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding current

1. Root welding - less current2. Fill welding - more current3. Cover welding - normal current

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding electrode

Electrodes must be still dry and in a good condition (not wed and the coating not broken

Basic Electrodes must be heating up by 250 – 350 C for 2 hour(see on the package)

Transport and storage after heating in a electrode heat container

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding electrode

Don’t use electrodes like this

Don’t weld on wet units …..try up before !!!

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding electrode Basic Electrode must be:

Heated by 350C for 1 ~2 HourTransport and storage on the welding place only in Heat Electrode box

Fabrication Rule on Site : Welding

Welding Rule for Site work- Welding on siteSimple welding rule

1. Prepare welding layer2. Welding 3. clean up the slag and brush4. Check your welding5. Repair if it necessary immediately

That's safe a lot of time after….. because we check the welding later

Fabrication Rule on Site : Welding

Welding preparation According Welding standard ISO 9692

Fabrication Rule on Site : Welding

Welding preparation According Welding standard ISO 9692

Fabrication Rule on Site : Welding

Welding execution

Fabrication Rule on Site : Welding

Welding execution

Fabrication Rule on Site : Welding

Welding executionBy thick Plates t>25mm the

root and fill welding layer must be grinded

Fabrication Rule on Site : Welding

Welding Quality Level Standard ISO 5817

Level D……..for Normal Steel structureLevel C……..for Columns Steel structure with high loadsLevel B………for Crane, Pressure Vessels, high load structure

Fabrication Rule on Site : Welding

Welding Quality Level Standard ISO 5817

Fabrication Rule on Site : Welding

Welding Quality Level Standard ISO 5817

Fabrication Rule on Site : Welding

Welding check on site Welding view check

-Structure from the welding layer-pore-Crater-Over lapping-Missing welding-Connection fault-under cut-surface penetration

Fabrication Rule on Site : Welding

Welding check on site-Check of the thickness from the welding layer

You can do with a welding gauge

Or with a self made template

To measure is the thickness ,,a,,

Fabrication Rule on Site : Welding

Welding check on siteCheck of the thickness from the welding layerHow you count the thickness if not shown in the

drawingor you check without drawing ?

With the Guide Number 0,8

< t x 0,8 = a10 x 0,8 = 8

10 mm

15 mm

a=8 mm

Fabrication Rule on Site : Welding

Welding check on site Dry penetration Test

-To see surface cracks

Fabrication Rule on Site : Welding

Welding check on site Ultra Sonic Test

-To see cracks inside and around the welding layer

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Under cut

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Connection mistake

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Pore

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation and missing welding

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Preparation

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Welding and Fabrication mistake

Wrong Welding

To low Current

Fabrication Rule on Site : Welding

Avoid Welding and Fabrication mistake

Do it slowly

To low Current

Then you are fast!!!

Do it correct

Fabrication Rule on Site : Welding

Do Manmanlaiand

Meiyou Mamahuhu

To low Current