Welding of Stainless Steels:
Stainless steels, resumed here in a general way, are defined as steel alloys, where the chromium content ranges from 10.5% to 30%. There are five distinct types of stainless steel:
Here are some rarely used NDT – Few Other Methods
1. Eddy Current Testing – ET:
Eddy-current inspection uses electromagnetic induction to detect flaws in conductive materials. A circular coil carrying current is placed in proximity to the test specimen (electrically conductive). The alternating current in…
We would see about Recommendations for Welding of Structural Steel as per AWS D1.1 , 2020 revision
Groove Weld: (Clause 4.4.1)
Weld Length : shall be the width of the parts joined , perpendicular to the direction of compressive or tensile stress,
Weld Size: Thickness of thinner…
The sole purpose of welding procedures is to describe the details that are to be followed in the welding of specific materials or type of joint. The following is a list of standard specifications for welding procedures that are normally covered in welding procedures…
Positions for Welding Pipe
For welding pipe in shops, power plants, oil refineries, and chemical plants for crude oil, gasoline, and natural gas, the same basic welding positions described previously are used.
Flat Butt Weld Pipe Position…
The NDT (nondestructive testing) methods are:
Visual Inspection – VT
Liquid Penetrant Testing – LT
Magnetic Particle Testing – MT
Radiographic Testing – RT
Ultrasonic Testing – UT
Eddy Current Testing – ET (not used in field inspection)
Acoustic Emission Testing – AET (not…
Preheating in Welding Procedure Specification:
Preheating is the act of heating the base metal before starting to weld. It is considered very essential in high thickness materials, Cr-Mo Steels & HSLA High Speed Low Alloy steels, etc…
Here we are going to answer the below topics
Welding – Process of joining similar metals (or thermoplastic).
By heating them to suitable temperature
May or may not require pressure
May or may not require Filler metal
Brazing -Process of joining dis-similar metals.
By Melting and pouring the filler metal and pouring…
Welding is a process of joining similar metals, i.e. Metals with same base content and similar properties or melting point.There are different types of welding methods based on the process of welding. Generally it involves heating of the metal and fusing them, with or…
Ultrasonic Testing involves utilization of ultrasonic sound waves to detect defects inside a material.
The welded joints have possibilities of defects inside the welds , or sometime near the weld zone.
The few of defects that are often found in welds are Porosity, Cracks, Slag Inclusion,…