ABICA EC
 
  • Many characteristics of a weld can be evaluated during welding inspection - some relating to weld size, and others relating to the presence of weld discontinuities. The size of a weld can be extremely important, as it often relates directly to the weld's strength and performance. For instance, undersized welds may not withstand stresses applied during service. Depending on their size and/or

  • Post-weld heat treatment or PWHT is a controlled process that involves reheating the metal below its lower critical transformation temperature, following a welding process. The material is then held at the elevated temperature for a predetermined period of time to alleviate residual stresses, increase the strength, increase or decrease the hardness, and reduce the risk of cracking by microstructural

  • PostHeating In case of alloy steel materials such as Cr-Mo stels, if the post weld heat treatment is not performed immediately after welding, then the weld joint and adjacent portion of pipe, at least 50 mm on either side of pipe, shall be uniformly heated to 300°C. This temperature shall be maintained for half an hour minimum, and then wrapped with mineral wool before allowing it to cool

  • Once you have determined that the welding application requires preheating, consider the best method to use. Induction heating is one preheat option that provides consistent heat throughout the weldment. It offers fast time-to-temperature and is considered a very safe option for preheating. Photo courtesy of Miller Electric Mfg. Co. Preheating with an open flame from a torch is

  • Basic Weld Inspection - Part 1 John Hoh Senior Staff Engineer National Board Category: Design/Fabrication Summary:This article was originally published in theFall 2009National BoardBULLETINas the first of atwo-part series. Please seeBasic Weld Inspection - Part 2for the conclusion of this article. Note: The

  • Ageing or Precipitation hardeningA low temperature heat treatment designed to produce the correct size and distribution of precipitates, thereby increasing the yield and tensile strength. It is generally preceded by a solution heat treatment. For steel, the temperature may be somewhere between 450-740 degree C, an aluminium alloy would be aged at between 100-200°C. Longer times and/or higher

  • Induction Heating The most common methods for achieving a more controlled preheat temperature are induction heating and electrical resistance heating. “The equipment used for induction is considerably more expensive than that used for electrical resistance heating,” said Fong. “However it does get your steel hotter quicker. It still offers you much more control than what you

  • The major objective of radiographic testing of castings is the disclosure of defects that adversely affect the strength of the product. Castings are a product form that often receive radiographic inspection since many of the defects produced by the casting process are volumetric in nature, and are thus relatively easy to detect with this method. These discontinuities of course, are related to casting

  • Ensuring a topnotch weld inspection program​ Ensuring that welders follow specific procedures is a crucial step in the overall welding quality system. There are a number of reasons to inspect a weld, the most fundamental of which is to determine whether its quality is good enough for its intended application. To evaluate the quality of a weld, it is necessary to

  • We provided services of QA/QC for the project of Al-Taweelah-Alumina refinery for the inspection of piping, preheat, PWHT, NDT, and hydro test inspection. Moreover, we provided RT review facilities as well. As API 510 certified inspector services of mechanical inspection were provided. About the project ofAl-Taweelah alumina refinery. Al-Taweelah alumina refinery is a strategic growth

  • Mechanical aptitude tests (MATs) measure your ability to understand mechanical and physical principles. The results may be used to determine your employability or potential for advancement. MATs involve an understanding of levers and pulleys, springs and electrical circuits, and tools and shop arithmetic. The most common MATs are the Bennett Mechanical Comprehension Test and

  • Welding Welding is basically the mixing of abase metalwithfiller metal. Filler material is melted at high temperature through a consumableelectrodeand provides the relevant bonding strength. Filler metal and base metal are bonded together in one solid body. A good quality weld is at least as strong as the base material(s) being joined. Preheating Preheating is

  • Before applying for the detailed PWHT requirements and exemption in these paragraphs, satisfactory weld procedure qualifications of the welding procedures specification to be used shall be performed in accordance with all the essential variables of ASME SECTION IX including conditions of post-weld heat treatment and including other restrictions listed below. While carrying out local post-weld

  • Welding Inspection Procedure / Checklist This article provides you a general welding inspection proceduer. Stage 1 - Welding Inspection Prior to Welding Work Welding symbols and weld sizes clearly specified in drawing and related documents. Weld joint designs and dimensions clearly specified in drawings and related documents. Weld maps identify the welding procedure

  • The procedure of Post Weld Heat Treatment projects is often recorded in a quality document beforehand. It lists the requirements that should be met for the relevant heat treatments and that will lead to a guaranteed result. Post Weld Heat Treatment (PWHT) is the international term for stress relief annealing: a heat treatment that is carried out – among other things – after welding work


we provide the following services to all types of industries,

  • Project Procedures writing/review
  • PQR Qualification<br /><b>Notice</b>:  Undefined index: imgalt in <b>/home1/abicaecc/public_html/search.php</b> on line <b>420</b><br />
  • WPS Qualification
  • WPQ welder qualification
  • Material receiving
  • spool release
  • Fit-up inspection
  • Preheat inspection
  • welding inspections
  • NCR issuing and closing
  • NDT witness
  • RT film review
  • PWHT inspection
  • Hydro test package review
  • Hydrotest inspection
  • Reports review
  • Site inspection
  • Walk down of the project
  • Punch list creation 
  • Punch list closing
  • Dossier review
  • Dossier submission
  • Final handover of Project

 


Copyright © 2022 ABICA EC All Rights Reserved.