Group items tagged defects - construction

Type of Defects which need to repair ! - 0 views

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welding defects fabrication failure service cracks

shared by ahmad subahman on 01 Oct 09 - Cached

ahmad subahman on 01 Oct 09

The repair of defects that occur during welding ranges from simple welding operations to improve weld profile to extensive metal removal and subsequent welding to rectify extensive cracking.

<div class="cArrow"> </div><div class="cContentInner">The repair of defects that occur during welding ranges from simple welding operations to improve weld profile to extensive metal removal and subsequent welding to rectify extensive cracking.</div>

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The Factors to be considered in Welding Repair - 0 views

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weldingrepair repair fillet factors welding

shared by ahmad subahman on 02 Oct 09 - Cached

ahmad subahman on 02 Oct 09

Before a welding repair is carried out the need for repair must be carefully considered. If a component or structure contains defects of a known size, whether these are fabrication or service defects,

<div class="cArrow"> </div><div class="cContentInner">Before a welding repair is carried out the need for repair must be carefully considered. If a component or structure contains defects of a known size, whether these are fabrication or service defects,</div>

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TIG Weld Defects and Causes. - 0 views

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welds defects TIG GTAW

shared by ahmad subahman on 07 Oct 09 - Cached

ahmad subahman on 07 Oct 09

Porosity cause by : Gas flow too low or too high. Leaking gas lines. Draughty conditions. Electrode stick out from nozzle too long. Contaminated/dirty weld prep. Contaminated/dirty wire. Incorrect gas shield. Arc length too long

<div class="cArrow"> </div><div class="cContentInner">Porosity cause by : Gas flow too low or too high. Leaking gas lines. Draughty conditions. Electrode stick out from nozzle too long. Contaminated/dirty weld prep. Contaminated/dirty wire. Incorrect gas shield. Arc length too long</div>

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SMAW Weld Defects and Causes. - 0 views

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welding techiniques defects SMAW

shared by ahmad subahman on 05 Oct 09 - Cached

ahmad subahman on 05 Oct 09

Lack of fusion/penetration cause by : Too large an electrode for weld preparation. Incorrect angle of electrode for weld preparation. Current too low. Travel speed too high etc

<div class="cArrow"> </div><div class="cContentInner">Lack of fusion/penetration cause by : Too large an electrode for weld preparation. Incorrect angle of electrode for weld preparation. Current too low. Travel speed too high etc</div>

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DYE PENETRANT INSPECTION - 0 views

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welding NDE NDT non destructive testing dye penetrant

shared by ahmad subahman on 01 Oct 09 - Cached

ahmad subahman on 01 Oct 09

A special dye is applied to the surface of the article to be tested. A suitable time interval allows it to soak into any surface defects. The surface is then freed from surplus dye and the dye in the crack revealed by either

<div class="cArrow"> </div><div class="cContentInner">A special dye is applied to the surface of the article to be tested. A suitable time interval allows it to soak into any surface defects. The surface is then freed from surplus dye and the dye in the crack revealed by either</div>

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GENERAL TECHNIQUES FOR TYPICAL REPAIRS - 0 views

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welding techniques general repair fillets repairs

shared by ahmad subahman on 01 Oct 09 - Cached

ahmad subahman on 01 Oct 09

The defect may be in a single run fillet weld requiring only a small amount of metal to be removed or it may be a large crack extending deep into parent metal.

<div class="cArrow"> </div><div class="cContentInner">The defect may be in a single run fillet weld requiring only a small amount of metal to be removed or it may be a large crack extending deep into parent metal.</div>

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MAGNETIC PARTICLE INSPECTION - 0 views

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welding inspection NDE NDT UT magnetic particle testing

shared by ahmad subahman on 29 Sep 09 - Cached

ahmad subahman on 29 Sep 09

The work is magnetized either by passing a current through it, or through a coil surrounding it. Defects on or near the surface disrupt the magnetic field (unless they are parallel to it)

<div class="cArrow"> </div><div class="cContentInner">The work is magnetized either by passing a current through it, or through a coil surrounding it. Defects on or near the surface disrupt the magnetic field (unless they are parallel to it)</div>

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BS 499 Welding Positions - 0 views

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welding position techniques BS499 flat horizontal vertical overhead

shared by ahmad subahman on 05 Oct 09 - Cached

ahmad subahman on 05 Oct 09

Positional welding (other than flat) often relies on arc force and surface tension effect; therefore the welding position may affect the mechanical properties of the weld and the likelihood of defects.

<div class="cArrow"> </div><div class="cContentInner">Positional welding (other than flat) often relies on arc force and surface tension effect; therefore the welding position may affect the mechanical properties of the weld and the likelihood of defects.</div>

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General Cause Porosity, Overlap and Tungsten Inclusion - 0 views

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welding defects porosity overlap tungsten inclusion

shared by ahmad subahman on 27 Sep 09 - Cached

ahmad subahman on 27 Sep 09

Porosity. Is the result of gas being entrapped within the solidifying weld metal. Porosity will be present in a weld if the welding technique, materials used or condition of the weld joint promotes gas formation.

<div class="cArrow"> </div><div class="cContentInner">Porosity. Is the result of gas being entrapped within the solidifying weld metal. Porosity will be present in a weld if the welding technique, materials used or condition of the weld joint promotes gas formation.</div>

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Surface Cracks in welding - 0 views

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welding defects longitudinal transverse cracks imperfection welds

shared by ahmad subahman on 19 Sep 09 - Cached

ahmad subahman on 19 Sep 09

A crack is a linear discontinuity produced by fracture. Cracks may be longitudinal, transverse, edge, crater, centreline, fusion zone, underbead, weld metal or parent metal.

<div class="cArrow"> </div><div class="cContentInner">A crack is a linear discontinuity produced by fracture. Cracks may be longitudinal, transverse, edge, crater, centreline, fusion zone, underbead, weld metal or parent metal. </div>

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WELD DECAY IN AUSTENITIC STAINLESS STEELS - 0 views

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welds decay defects cracks welding austenitic stainless steel

shared by ahmad subahman on 14 Sep 09 - Cached

ahmad subahman on 14 Sep 09

Occurs in the HAZ due to the precipitation of chromium carbides. In the 5500C - 8500C range, the chromium leaches out of the grain and reacts with the carbon to form chromium carbides, due to the chromium having a greater affinity for carbon.

<div class="cArrow"> </div><div class="cContentInner">Occurs in the HAZ due to the precipitation of chromium carbides. In the 5500C - 8500C range, the chromium leaches out of the grain and reacts with the carbon to form chromium carbides, due to the chromium having a greater affinity for carbon.</div>

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Easier Troubleshooting for Submersible Pumps - 5 views

Home owners and building maintenance operators have no longer worried when they were given a guide on tips for troubleshooting submersible pumps. Nowadays, it is no longer a burden to keeping the p...

submersible pumps Lowara pump vacuum pump pumps Pump Solutions

started by Thea Nielsen on 10 Aug 11 no follow-up yet

Group items tagged

Type of Defects which need to repair ! - 0 views

The Factors to be considered in Welding Repair - 0 views

TIG Weld Defects and Causes. - 0 views

SMAW Weld Defects and Causes. - 0 views

DYE PENETRANT INSPECTION - 0 views

GENERAL TECHNIQUES FOR TYPICAL REPAIRS - 0 views

MAGNETIC PARTICLE INSPECTION - 0 views

BS 499 Welding Positions - 0 views

General Cause Porosity, Overlap and Tungsten Inclusion - 0 views

Surface Cracks in welding - 0 views

WELD DECAY IN AUSTENITIC STAINLESS STEELS - 0 views

Easier Troubleshooting for Submersible Pumps - 5 views

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