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…
Fillet Weld Positions
The advantage of the fillet-welded joint is that it’s unnecessary to prepare the edges of the plates or sheets for welding. Double fillet-welded joints are an improvement over single-fillet joints because they can withstand loads from more than one direction.
Three of the…
Standards for Welding Positions:
It is very important for the Weld Inspector to know the position, or location of a joint relative to the horizon, because it may determine what welding process, methods, and techniques can be used.
Welding is usually easiest when the welder can…
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…
Equipments and materials for NDT lab set up
Radiography Testing:
1) X-Ray tube head -450 kV capacity ( only if construction of a exposure room with approval from government is possible)
2) RT Films (D4 )
3) lead screen 0.125mm, 0.25 mm
4) Film casettes
5) set of IQI -wire…
Acceptance Criteria for Liquid Penetrant Testing -LPT as per ASME , AWS and API standards
Liquid penetrant testing simply called as PT. Sometimes Dye Penetrant Testing is a surface defect detection NDT method and is more sensitive to all kind of surface defects, such as…
The below are the brief of the QC Course Content for Engineers and mechanical Engineers.
The program is additional course for Mechanical Engineers which prepare them for expertise in field of mechanical engineering , and…
Types of Welding
Welding process involves joining of two metals and sometimes non-metals such as plastic
There are many different types of weld, as below:
Arc welding
Atomic Hydrogen Welding ( AHW)
Bare Metal Arc Welding (BMAW)
Carbon Arc Welding (CAW)
CAW-G—– Gas
CAW-S—-Shielded
CAW-T—–Twin
Electro Gas Welding (EGW)
…
What is a cast iron?
Cast iron are ferrous alloys with greater than 2% carbon.
They also contain small amounts of other materials such as silicon, sulphur, manganese, & phosphorous.
In general it consists alloys of carbon & iron.
They are the least expensive of all metals and…