Oxy-Acetylene Gas Welding Technique

There are different welding techniques for welding mild steel. They are as follows: Leftward or forward welding. Rightward or backward welding. Vertical welding, single or double. Overhead welding. Linde welding. Leftward or Forward Welding The leftward method of welding is also known as forward welding. It is the oldest and most widely established method for the butt-welding of steel plates. Recent developments have shown that above certain thickness, the leftward method cannot be used successfully, but within its sphere of application, which is limited of thickness, it gives excellent results…

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Preparation of the Joints For Oxy-Acetylene Gas Welding on Mild Steel Metal

Preparation of the Joints Correct preparation of the parts to be joined is of great importance in the production of the successful welds. In addition thorough cleaning, ensure that all oil, grease, paint and oxides are removed from the parts. Preparations for the welding may include. (a) Suitable preparation of the edges along which the weld is to be made. (b) Accurate setting up of parts in relation to one other. (c) Preheating or other measures to avoid the stresses and distortion. Preparation of Edges Except when thin sheet metal…

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Oxy-Acetylene Gas Welding on Mild Steel Metal

Introduction to Oxy-Acetylene Gas Welding The majority of the metals can be joined by welding.While some metals, present little difficulty to the welder. These metals need extreme care and specialised treatment while welding. For welding different metals, different job preparation and welding technique is followed.  After welding, treatment is necessary to have successful results. Approved drawing is provided where specific requirements are laid down; which contain the preparation of the parts, methods of welding, heat treatment and other factors. These instructions must be followed. Such drawing should always be supplied…

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Online Education a Modern e-Learning

These days, it is usually thought that new specialised growth can highly help in details. In young age groups especially, children can use the huge relationships of new media, and make their abilities, details, understanding around the world, under their mother and father tracking, of course. In no way conventional details can be personalized, but in this era of fast specialised advance and minimization of range through the use of the Online, everyone must be equipped with main details in specialised growth, as well as use it as a method…

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Online Colleges

The ambitions of educational qualifications, according to the U. s. States Department of Information, is to ensure that programs offered by companies of greater education apprenticeship covered sufficient stages of quality. ENQA, the Western Organization for Interest Declaration in College Information, describes the aspect of different passion statement in apprenticeship as one that “combines both liability for the improve of the available and an cold and improving aspect for appropriate passion in institutions”. In the level of on the internet knowledge, it is important to avoid unaccredited turbines that action…

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Grinding and Drilling in Workshop

The process of removing material from a piece of work by means of rotating abrasive wheel is known as grinding. Grinding wheel is mounted on the spindle and rotates on it. Metal is ground by the action of number of cutting edges coming into contact with the work piece. Types of Grinding Machines (a) External Cylindrical Grinding Machine (b) Internal Cylindrical Grinding Machine (c) Surface Grinding Machine Classification – These machines are classified by the type, size of machine and special features as specified by the manufacturers. Purpose: The purpose…

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The welding processes

Welding Welding is a process of joining similar metals by application of heat, with or without application of pressure, with or without adding the filler material, with or without using flux. The welding processes generally used are classified into two main groups: (a) Pressure Welding (b) Fusion Welding or Welding without Pressure In pressure welding, the surfaces to be joined are heated to a plastic state. Then forced together by external pressure to make the joint. This process is used in Forge Welding, Resistance Welding and Pressure Thermit Welding. Fusion…

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Elements of Soldering

Essential elements required for soft soldering are (a) Soldering iron (b) Solder (c) Flux (d) Source of heat Soldering Irons A soldering iron consists of a copper bit, secured to a iron holder, which is fitted with a wooden handle. The soldering irons are made in various sizes. The type of soldering iron selected must be large enough to heat the job adequately. The following soldering irons are used in service: (a) Common Soldering Iron. It is used for general purpose. These are available in various sizes and shapes. The…

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Soldering, Welding and Brazing Carried Out in Workshop

In engineering, while manufacturing or assembling different parts or jobs, two or more metal pieces are joined together to form a complete job or assembly. There are several methods by which two or more metal parts can be joined. Joints can be made by riveting, welding, soldering, brazing, grooving and making some other type of seams. Soldering – Soldering is the method of joining two or more pieces of metal by means of a low melting fusible alloy (solder), which is applied in the molten state. Types of Soldering –…

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Engineering 

Role of Casting and Forging in Workshop

Casting has been used for shaping metal since the earliest days of civilization. A wide variety of sizes and shapes of simple and intricate nature can be produced in different metals. Casting is a process of producing metal or alloy components of desired shape, by pouring the molten metal/alloy into a prepared mould. After that it is allowed to cool and solidify. The solidified alloy or metal is known as casting. Smithy is understood to handle relatively small jobs that can be heated in an open fire or hearth. The…

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