Welding till the End!
In this article we will discuss about the P91 material basics, welding requirement, consumable selection, welding process selection, microstructure, application. P91 Material The use of P(T)91 materials is worldwide. There are various sources for base materials, welding consumables, and fabrication or components. The art is such that few welding problems are encountered. The desire to …
In this article we have discussed about the difference between welder and welding operator, purpose of their qualification and how ASME section IX divided the welding in manual, semi-automatic, machine and automatic welding.
In this article we will discuss about the Supplementary Essential variable for GTAW, SMAW, SAW and GMAW welding process as per ASME BPVC Section IX for qualifying a groove weld PQR (Procedure Qualification Record). What is supplementary Essential Variable? A supplementary essential variables are those variable in which change will affect the toughness property of …
“Supplementary Essential Variable, ASME Section IX” Read More »
Below mentioned question is likely to be asked in interview & Welding/Quality Engineer should must prepare for these question before interview. Q1. What is sour service? Q.2 Why Ni is restricted up to 1% max. for sour service? Q3. What is the role of delta ferrite in stainless steel welding? Q4. Why PWHT is not required …
Important interview question for Welding/Quality Engineer Read More »
The ASME section IX specifies the requirements for the qualification of welder, welding operators, brazers, brazing operators and fusion operators and the procedure employed in welding, 0brazing and plastic fusing in accordance with the ASME boiler and pressure vessel code and the ASME code 31 for pressure piping and others codes and specifications. ASME section …
In this article we will discuss about the tube-to-tubesheet welder and welding operator qualification as per BPVC ASME Section IX. Tube-to-Tubesheet Welding Tube to tube sheet welding is a special kind of welding, both process and technique wise. Essentially the parameters, techniques adopted for a groove weld will not work for this type of weld …
In this article we will discuss about the required mechanical testing as per ASME BPVC Section IX for qualifying a groove weld PQR (Procedure Qualification Record), Location from where specimen to be taken, purpose and acceptance of mechanical testing. Testing Requirement: The type and number of test specimen required to qualify a groove weld PQR …
Mechanical Testing Requirement as per ASME BPVC Section IX Read More »
What is Heat Input (HI): In arc welding, energy is transferred from the welding electrode to the base metal by an electric arc. When welder initiate the arc, the welding electrode and base metal is melted and weld pool is generated. This weld pool results due to the energy supplied through the power source. Energy …
Importance and Calculation of Heat Input and Arc Energy Read More »
This article is about Welding Position involved in fabrication of Pressure Vessel, Piping and Pipelines. Different welding standard specifies different welding positions for welder. Welding position is specified as per the position of work piece before and during welding. Position of welding is specified in ASME section IX and EN ISO 6947. Welding position is …