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What is the History of the Welding Process? What are Welding Methods? What are the Types of Welding and Advantage of Welding?

What is the History of the Welding Process? What are Welding Methods? What are the Types of Welding and Advantage of Welding? What Is Welding By heating two or more surfaces to a melting point, welding joins two or more pieces of metal or thermoplastic. Typically, this process involves applying heat and pressure to the surfaces being joined, causing the materials to melt and fuse. History of the Welding History of Welding Method/Process ·          Earliest stage of welding is known as forge welding ·          16th century - Soldering process used for brazing silver and copper ·          18th century - Gas welding and Arc welding ·          19th century - Fusion welding, Metal electrode welding and Carbon arc welding. ·          20th century - Electric arc welding Several new...
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DP Test

How DP Test Works??? Dye Penetrant Examination is commonly used for weld components. In this technique low viscosity liquids are allowed to penetrate in the surface openings and after penetration, liquid is made to extract out again by means of some developers. That is why it is also known as Liquid Penetrant Examination for the evaluation of weldment.  The examination includes five steps ·         Cleaning ·         Introducing Penetrant ·         Penetrant Removal ·         Introducing Developer ·         Examination Cleaning: - To start, the test surface is need to be cleaned with the help of wire brush or some old cloth using a suitable. cleaner. The surface must be cleaned from organic compounds (oil and grease), dust, scale and other pollutants because an even su...
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Helical / Compression spring manufacturing process

Raw Materials Steel alloys are the most commonly used spring materials. The most popular alloys include high-carbon Design Various mathematical equations have been developed to describe the properties of springs, based on such factors as wire composition and size, spring coil diameter, the number of coils, and the amount of expected external force. These equations have been incorporated into computer software to simplify the design process. The Manufacturing Process 1 Cold winding. Wire up to 0.75 in (18 mm) in diameter can be coiled at room temperature using one of two basic techniques. winding the wire around a shaft called an arbor or mandrel A guiding mechanism, such as the lead screw on a lathe, must be used to align the wire into the desired pitch (distance between successive coils) as it wraps around the mandrel. 2 Hot winding. Thicker wire or bar stock can be coiled into springs if the metal is heated to make it flexible. Standard industrial ...
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