DEPARTMENT OF MECHANICAL ENGINEERING

                                                        Submerged Arc Welding           Submerged Arc Welding (SAW) is a joining process that involves the formation of an electric arc between a continuously fed electrode and the workpiece to be welded. A blanket of powdered flux surrounds and covers the arc and, when molten, provides electrical conduction between the metal to be joined and the electrode. It also generates a protective gas shield and a slag, all of which protects the weld zone. The make-up of the process can be viewed by reference to Figure 1 below                The general arrangement of the power source and controls, wire feed and flux dispensing are shown in Figure 2.                                     Submerged arc welding is viewed as a high productivity process and is usually automated/mechanized in its form. The simplest application of the process uses a single wire. Selecting the correct wire diameter for a welded joint depends on many factors and t

 

  Water jet Cutting      Water jet Nozzle   Tool Changes Required Operating efficiency is improved because water jet cutting allows you to cut different materials without changing any tools. No need to change nozzle heads when a new material is placed on the table, just simply adjust your feed rate to the appropriate speed to match the material type and thickness and you are on your way to making your next cut. In many cases workshops improve their profitability as less time is wasted changing tools whenever a new cut is being made. No Heat Affected Zones Heat distortion and hardened edges were a common problem faced by manufacturers before water jet cutting was introduced. Cutting processes that generated high heat was used which created significant problems for workshops. One of the major problems faced was heat zones being created within materials which cause the molecular structure of that material to change. This has secondary effects on the material which often led

Automotive Welding for Beginners, Basic Tips Welding a car is a fantastic experience. Modifying, creating, and reattaching parts of the automotive is a thrill like no other. Hobbyists and professionals alike enjoy the experience of creating an automotive with their bare hands. For a perfect weld, you would need a good quality   welding machine , a welding coat and gloves, and a welding helmet to start. Rusting and cracks on car bodies are usually easy to fix but are often overlooked by most people. These tasks are considered time-consuming and are also thought of as costly. However,  welding  at home will help reduce the cost and save your car. Most home welders start with small things around the tool shed like fixing old metal cupboards, metal garage doors, wire fencing around the property, and window grilles. Once you get the hang of handling the welding machine, you can start welding the car for broken metal parts to be mended, rust removal, and joints’ strengthening. Let us help yo

  What is pattern?  The Mechanical post  welcomes you back! Today we’ll talk about pattern, what materials are used for the making, its advantages, limitations and types. What is pattern in casting ? Patterns are used to make moulds for the   casting   into which the molten metal would be poured. Patterns are the copy of the product which is intended to be casted. However, it is not an exact replica of the casting desired. There are certain essential difference. It is slightly larger than the desired casting, due to various allowances that is shrinkage allowance, machining allowance etc. and it may have several projections or bosses called cold prints. It may also have extensions to produce runners and gates during the moulding process. Desired characteristics of pattern Secure the desired shape and size of the casting. Cheap and readily repairable.  Simple in design for ease of manufacture.  Light in mass and convenient to handle. Have high strength and long life in order to make as m

  What is a Conveyor System?  Every industry that needs to transport or move products from one production area to another uses conveyor systems. These industries use these conveyor systems to increase efficiency, reduce labor costs, and streamline work processes.  A conveyor system is mechanical handling equipment designed to move raw or processed products from one location to another. Manufacturing and processing companies use these systems, especially for mass-produced products. Similarly, it’s used when dealing with sharp or heavy items such as car parts.  Below, we’ve discussed all you need about conveyor systems: types, advantages, limitations, applications, and everything in between.   Components and Requirements of a Conveyor System   Conveyor systems come in varying designs, sizes, and shapes. However, there are some basic components you’ll find in every conveyor system. These are the frame or belt support, the drive, and the idlers/support system.  Before installing a conveyor