Ravi Trinity NDT & Welding Blog - Updates on Workshops, seminar, Tech talks on NDT & Welding

Selection of P-Number in Welding WPS Qualification As per ASME Code Section IX What is P-Number in welding?  In order to minimize the need for numerous welding procedure qualifications , base metals are assigned P-Numbers (abbreviated as P-No) based on their specific characteristics, including composition, weldability, brazeability, and mechanical properties.  This classification system aims to streamline the welding process by grouping materials with similar attributes together.  P-Number (P-No) plays a crucial role in welding procedure qualification and material compatibility. In this blog post, we will delve into the concept of P-Number, its significance, and its application in welding processes.  P-Number in Welding- Importance The P-Number system utilizes alphanumeric designations to group base metals together based on their shared characteristics in terms of weldability and mechanical properties.  The purpose of assigning P-Numbers is to streamline t...

    IIW YPIC2025 - 2nd Online Young Welding Professional International Conference in February 6th & 7th, 2025 About Event The International Institute of Welding on the Young Professionals International Conference (YPIC) to be held in Virtual Mode (Online) on 6th and 7th February 2025. On 6th-7th February 2025 , the Young Professionals International Conference (YPIC)  will be held online. We invite young professionals, young researchers, and students up to age of 35 years old to participate in the Conference. All registered participants registered with presentation and without presentation as guests among students, Ph.D. candidates, young researchers, representatives of industrial enterprises, and scientific organizations will receive a certificate of participation from IIW. Outstanding presentations will be invited to join the technical commission presentation at the IIW annual assembly and be nominated for the YPIC Award in June 2025...

Electrical Conductivity Testing Using Eddy Current Method  by Ravi Kumar Thammana Introduction  Electrical conductivity measurement can be done using Eddy current testing. This method gives good results for non magnetic materials. Works well with digital readout equipment or general purpose eddy current equipment. Among all NDT testing methods eddy current has more wider applications.  Apart from flaw detection, eddy current testing can be used for material sorting, hardness, heat treatment, pain thickness, conductive coating thickness on non conductive materials. Eddy current test method for detecting conductivity is applicable for non-ferromagnetic materials such as aluminium, titanium, magnesium, copper and other metals. Measurement can be performed on the materials that contains non conductive coating. Material sorting using Eddy current testing is an effective method to segregate materials based on alloy type, ageing, heat treatment micro structures hot or cold wo...

    National Welding Seminar (NWS) 2024  Theme : Advances in Welding, Cladding & Additive Manufacturing (AWCAM) 2024 Organized by : THE INDIAN INSTITUTE OF WELDING Jamshedpur Branch Mobile : +91 72092 87732 Email: iiw.jamshedpur@gmail.com   REMEMBERING SRI RATAN NAVAL TATA (1937-2024) A true Titan whose vision transformed industries and lives alike About The Indian Institute of Welding (IIW-India)   The Indian Institute of Welding ( IIW-India ) is a premier professional body of welding fraternity, devoted to the promotion and advancement of welding science and technology. It was established on 22nd April 1966, with its registered office at Kolkata. Presently IIW-India is having 14 branches and several Students' Chapters, spread all over India. It has more than 4500 members including around 150 industries as Industrial Corporate Member. The Institute publishes Indian Welding Journal, which has technical research papers of...

  D&H SÉCHERON ELECTRODES YOUNG ENGINEERS COMPETITION - 2024 Online Competition  About IIW India THE INDIAN INSTITUTE OF WELDING (IIW-India ) was incorporated on 22rd April1966 at Kolkata to foster the welding science, technology and engineering in India. Since then IIW-India has been serving the cause of welding industry through its 13 branches throughout India.  The Institute is a non-profit making organization registered under section 25 of The Companies Act 1956 and is also registered under section12 A of Income Tax Act 1961, as an Institution for charitable purposes.  The Institute having its head office at Kolkata, and 13 branches at major cities in the country, viz. Kolkata, New Delhi, Jamshedpur, Baroda, Bhilai, Vishakhapatnam, Hyderabad, Pune, Mumbai, Chennai, Bengaluru, Cochin and Tiruchirappalli. The centres at Bhubaneswar, Surat and 16 Student’s Chapters. The Institute has celebrated its "GOLDEN JUBILEE " during 2016.  IIW-India Cochin ho...

 Conference on Changing Landscape of Welding: Productivity, Technology, Safety and Sustainability by CII, IIW India in Delhi   Confederation of IndianIndustry (CII)  in association with  The Indian Institute of Welding (IIW-India)  and  Association of Welding Products Manufacturers (AWPM)  is organising a Conference on  ‘Changing Landscape of Welding: Productivity, Technology, Safety and Sustainability’ on 7 August, 2024  at Hotel Le Meridien,  New Delh i (Flyer attached) .   As the country progresses  towards Viksit Bharat, the Indian Welding industry has a key role to play. The welding market in India is primarily driven by the growth of various industries such as construction, heavy engineering, and nuclear. Apart from this, the Indian government's focus on infrastructure development, such as the construction of highways and bridges, is catalysing the product demand.    The rising product adoption in the...

  Summary of Major Changes in ASNT Recommended Practice SNT TC 1A 2024 edition Recently ASNT has released 2024 edition of SNT TC 1A - Personnel Qualification and Certification in Nondestructive testing .  Following are the summary of major changes when compared to previous editions 2020. Paragraph 1.5 was removed. Paragraphs 2.1.7 and 2.1.11 were updated to better define the terms “Detection Rate” and “False Call” to ensure their precise application. Paragraphs 2.1.15 and 2.1.18 were revised to further elucidate the term “Predictive Maintenance”. Additionally, to contrast with the term “NDT”, the definition of “ Non-Destructive Testing ” was included in accordance with ASTM E1316. The text in parentheses in paragraph 2.1.21 was amended to read: “This is usually done before any NDT is performed when there are concerns regarding the performance of the NDT or the instrument’s response.” In Table 6.3.1B, interpretations for digital radiography (RD), computed radiography (CR ), a...

  What Causes Pinholes in Welding? Causes and Remedies - A Guide Contents Introduction  Understanding the Welding Process   Exploring the Causes of Pinholes  Impact of Pinholes on Weld Quality  Strategies for Prevention and Mitigation    Introduction   In the intricate world of welding, pinholes are a persistent challenge that welders encounter.  These tiny voids, often invisible to the naked eye, can significantly compromise the integrity and quality of a weld.  Understanding what pinholes are and why they need to be addressed is crucial for maintaining the structural integrity and functionality of welded components.  Definition of Pinholes in Welding   Pinholes in welding refer to small voids or discontinuities within the weld metal or at the weld interface.  These voids can vary in size, ranging from microscopic to more visible defects, depending on the welding process and parameters.  Pinholes are typi...