Posted in Welding Engineering

Applications of Brazing and Brazing Equipments

What is Brazing? Brazing is defined as a process of joining similar or dissimilar metals in which molten filler metal is drawn by capillary action into the space between closely adjacent surfaces of the parts to be joined. In general, the melting point of the filler metal lies above 500C but below the melting point of the parent metals being joined. The brazing alloy is often called spelter and can be plain brass (50% copper and 50% zinc). Increasing of the zinc content decreases the melting point of the spelter. Borax is used as a flux for brazing. Brazing alloys containing phosphorus…

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Inverter Technology Vs Traditional Welding Technology

First welding toughness sources have already been noticeably very simple devices instructions a mass of laminated metal draped with real estate agent and lightweight aluminum, designed to pass the heat. In 1970’s Squarewave manufacturing know-how once was developed by employing Miller in addition to included in transformer-based welders. At the time, that science given drastic betterments for the TIG process. Nevertheless, these models nevertheless acquired restricted vibrant capabilities. Rapidly ahead to help today’s inverter electricity methods. Innovative inverter technological abilities structures give many advantages through machines having regular welding technology. Callier TIG welders that employ inverter manufacturing know-how allow multiplied…

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Classification of Welding Processes #SecondPart

Continued From … Welding is a process of joining similar metals by application of heat with or without application of pressure and addition of filler material. The term “weldability” has been defined as the capacity of being welded into inseparable joints having specified properties such as definite weld strength, proper structure, etc. There are several factors that affect the weldability i.e. Melting Point, Thermal conductivity, Thermal Expansion, Surface condition, and Change in Microstructure. There are basically two types of welding, Plastic Welding and Fusion Welding. Plastic Welding: In Plastic welding or pressure welding, the pieces of metal to be joined are…

Posted in Welding Engineering

Classification of Welding Processes #FirstPart

Welding is a process of joining similar metals by application of heat with or without application of pressure and addition of filler material. The term “weldability” has been defined as the capacity of being welded into inseparable joints having specified properties such as definite weld strength, proper structure, etc. There are several factors that affect the weldability i.e. Melting Point, Thermal conductivity, Thermal Expansion, Surface condition, and Change in Microstructure. There are basically two types of welding, Plastic Welding and Fusion Welding. Plastic Welding: In Plastic welding or pressure welding, the pieces of metal to be joined are heated to plastic…

Posted in Welding Engineering

Types, Working Principle, Precautions and Testing and Repairing of Regulators

This is a device used to draw the gas from cylinder at required pressure and control the flow of gases at a constant rate to the torch or blowpipe. For different types of gas, we use different regulators. In oxy-acetylene welding plant we use oxygen and acetylene regulator. There are two types of regulator. (a) Single stage regulator (b) Double stage regulator Single Stage Regulator. This regulator is designed to regulate the pressure in one stage only. Initially, the desired working pressure is set, but as the work proceeds and gas is consumed, pressure drops. This cause a change in…

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Types of Gases Used in Gas Welding Process

In the gas welding process, the welding heat is obtained from the combustion of fuel gases in the presence of a supporter in combustion. And, in most of the gas welding process oxygen is use as a supporter for combustion. And the various fuel gases are hydrogen, coal gas, liquid petroleum gas (LPG), and acetylene etc. Oxygen. Oxygen is found nearly everywhere in nature, either in free state or in a combination with other elements. It is one of the chief constituents of atmosphere i.e.21% Oxygen and 78% Nitrogen. It is a supporter of combustion. Its chemical symbol is O2….

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Oxy-Acetylene High Pressure System

Oxyacetylene welding is a fusion-welding process. The coalescence of metals is produced by an oxygen-acetylene flame; Extreme heat is concentrated on the edges or on the edge and surface of the piece of metal being joined until the molten metal flows together. The type of joint design determines whether a filler metal should be used to complete the weldment or not. Filler metal is added by inserting it into the molten puddle of the base metals. The puddle then solidifies, after cooling making the weld bead. The extremely high heat depends on the mixture of two types of gaseous substances,…

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Basic Welding Operations Introduction

Welding is widely used by metal workers in the fabrication, maintenance, and repair of parts and structures. While there are many methods for joining metals, welding is one of the most convenient and rapid methods available. In order to join two or more pieces of metal together by one of the welding process, the most essential requirement is heat. Pressure may also be employed, but this is not essential in many processes. Welding is the process of joining metals by heating them to their melting temperature and causing the molten metal to flow together. These range from simple steel brackets…

Posted in Welding Engineering

Basic Welding Operations Introduction

Welding is widely used by metal workers in the fabrication, maintenance, and repair of parts and structures. While there are many methods for joining metals, welding is one of the most convenient and rapid methods available. In order to join two or more pieces of metal together by one of the welding process, the most essential requirement is heat. Pressure may also be employed, but this is not essential in many processes. Welding is the process of joining metals by heating them to their melting temperature and causing the molten metal to flow together. These range from simple steel brackets…