Archive | Welding

Welding Metals: Principles and Arc Welding | Joining Processes | Manufacturing Science

In this article we will discuss about the welding of metals:- 1. What is Welding? 2. Principles of Solid Phase Welding 3. Principles of Fusion (Liquid State) Welding 4. Weld Defects and Inspection. What is Welding?: Unlike the manufacturing processes employed to produce a single component, the joining processes are used to assemble different members to yield the desired complex configuration. [...]

By |2018-10-29T14:01:53+05:30October 29, 2018|Welding|Comments Off on Welding Metals: Principles and Arc Welding | Joining Processes | Manufacturing Science

Classification of Welding Processes (with Chart)| Metal Joining | Engineering

Welding is broadly classified into two types: I. Plastic Welding: In this case the two pieces of metals to be joined are heated to plastic state and welding is completed by forcing them. In this case no filler material is added. II. Fusion Welding: In this case the two pieces of metal are heated and brought to molten state and [...]

By |2018-08-01T11:32:17+05:30August 1, 2018|Welding|Comments Off on Classification of Welding Processes (with Chart)| Metal Joining | Engineering

Application of Computers in Welding Process | Metallurgy

Most important application of computer in welding is for the setting of welding parameters. Computer is used to control the welding process with regard to both static and dynamic characteristics. A computerised welding process controller is designed to handle the various phenomena occurring during the welding process, viz., the start-up sequence, continuous welding-including parameter setting, and the termination sequence. Start [...]

By |2017-11-09T17:50:08+05:30November 9, 2017|Welding|Comments Off on Application of Computers in Welding Process | Metallurgy

Welding: Meaning, Characteristics and Design | Industries | Metallurgy

In this article we will discuss about:- 1. Meaning of Welding 2. Advantages of Welding over Other Joints 3. Welding Radiation 4. Weldability of Metals 5. Steps in Executing Welding 6. Characteristics 7. Heat Affected Zone (HAZ) in Welding 8. Recent Trends 9. Design 10. Quality Control 11. Inspection of Final Welds and a Few Others. Contents: Meaning of Welding [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on Welding: Meaning, Characteristics and Design | Industries | Metallurgy

General Conditions for Welding of Metals (With Diagram) | Metallurgy

For obtaining good results it is desirable that the surfaces should be clean and free from foreign materials. The cleaning can be done by wire brushing, machining or sand blasting. Impurities if present tend to make the joint weaker as the welded portion is filled with gas and slag inclusions and metal becomes brittle and the cohesion between the metals [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on General Conditions for Welding of Metals (With Diagram) | Metallurgy

Classification of Resistance Welding | Metals | Industries | Metallurgy

The following points highlight the five main types of resistance welding. The types are: 1. Spot Welding 2. Projection Welding 3. Seam Welding 4. Butt Welding 5. Percussion Welding. Type # 1. Spot Welding: This is probably the simplest form of resistance welding and best suited for ordinary sheet steel. For obtaining good welds having strength, and to avoid the [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on Classification of Resistance Welding | Metals | Industries | Metallurgy

Methods of Welding: 31 Methods | Metals | Industries | Metallurgy

The following points highlight the main thirty one methods of welding used in industries. The methods are: 1. Plastic Welding 2. Fusion Welding 3. Solid-Phase Welding 4. Cold Welding 5. Forge Welding 6. Pressure Welding 7. Flash Welding 8. Resistance Welding 9. Gas Welding 10. Oxyhydrogen Welding 11. Air-Acetylene Welding 12. Pressure Gas Welding 13. Atomic Hydrogen Welding and Few [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on Methods of Welding: 31 Methods | Metals | Industries | Metallurgy

Oxyacetylene Welding Process for Metals | Types | Gas Welding | Metallurgy

In oxyacetylene welding, the two gases used for producing flame are oxygen and acetylene. Oxygen is used to support and intensify combustion. It is generally prepared in factories by liquefying air and then separating it into its component parts by rectification. From factories, it can be obtained under high pressure in cylinders which are fitted with pressure regulators to get [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on Oxyacetylene Welding Process for Metals | Types | Gas Welding | Metallurgy

Equipment for Oxyacetylene Welding | Types | Gas Welding | Metallurgy

The following points highlight the equipments used for oxyacetylene welding. The equipments are: 1. Welding Torch 2. Pressure Regulator 3. Hose and Fittings 4. Cylinders 5. Goggles 6. Spark Lighter 7. Apron 8. Gloves 9. Welding Rods 10. Fluxes. Equipment # 1. Welding Torch: It is a tool for mixing the two gases in the desired volumes and burning the [...]

By |2017-07-24T11:54:32+05:30July 24, 2017|Welding|Comments Off on Equipment for Oxyacetylene Welding | Types | Gas Welding | Metallurgy

Arc Welding: Meaning and Precautions | Techniques | Welding | Metallurgy

In this article we will discuss about:- 1. Meaning of Arc Welding 2. Shielded-Arc Welding 3. Shielded Metal Arc Welding (SMAW) 4. Precautions to be Taken in Arc Welding 5. Arc Energy 6. Starting an Arc 7. Arc Stability 8. Puddle Control for Fusion Welding 9. Welding Adjustments to Correct the Bead 10. Good Arc by Proper Length Adjustment.  Meaning [...]

By |2017-07-24T11:54:31+05:30July 24, 2017|Welding|Comments Off on Arc Welding: Meaning and Precautions | Techniques | Welding | Metallurgy
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