No Catergory 
No Catergory
# POROSITY IN WELDING — WHY DOES IT OCCUR?
The American Welding Society in its standard AWS A3.0 describes porosity as a cavity formed by gases trapped…
Archive
Author: admin
QUALITY 
QUALITY
SYMBOLS IN WELDING, A COMMUNICATION CHANNEL.
Symbology is a very important communication channel between the design department and the manufacturing department, which is why…
QUALITY 
QUALITY
# CRACKS IN WELDING — WHY DO THEY OCCUR? Cracking is one of the most serious discontinuities that can occur in a weld joint, as it significantly compromises the mechanical integrity of the structure. Cracks can appear in the weld metal itself or in the heat-affected zone (HAZ), and their origin is associated with a combination of metallurgical, mechanical, and procedural factors. — ## MAIN CAUSES OF CRACKING IN WELDING ### 1. **High Carbon or Alloy Content in the Base Metal** When the base metal has a high carbon equivalent (CE), the HAZ becomes susceptible to forming hard, brittle microstructures such as martensite, which are prone to cracking — particularly **hydrogen-induced cold cracking (HICC)**, also known as **underbead cracking** or **delayed cracking**. ### 2. **Presence of Diffusible Hydrogen** Hydrogen is one of the primary causes of cracking in welding. It can be introduced through: – Moisture in the flux or electrode coating – Contamination on the base metal surface
Cracks are considered the most critical discontinuity; due to their elongated shape, they can cause serious problems in…
MATERIALS 
MATERIALS
PROCEDURE FOR WELDING CAST IRON OR IRON CASTING.
Cast irons are alloys of iron, carbon, and silicon in which elements such as phosphorus, sulfur, manganese, etc.…
WELDING PROCESS 
WELDING PROCESS
5 FACTORS TO CONSIDER WHEN PURCHASING A WELDING EQUIPMENT.
When purchasing a welding machine, several factors must be analyzed since it represents your next business investment. It…