DTAL e-learning

 Below is the link for the Assignment, Click to access the assignment: MATERIALS AND METALLURGY WEEK 3 ASSIGNMENT. 

 Please find the link to the assignment about grinding operation. Click here to access the work or: TOOL ROOM Assignment 1 week 2

 The following are sheet metal working operations performed in the engineering workshop

STEEL MAKING  Two important furnaces used in production of steel are: Basic oxygen Furnace pure oxygen is blown at a high velocity through the lance thus causing combustion. carbon dissolved in the  pig iron and other impurities such as silicon, manganese and phosphorous are oxidized Electric arc Furnace  It has a removable roof for charging from above. scrap iron and steel selected for their composition with alloying elements and limestone(flux) are charged into the furnace and heated by electric arc that flow between two large electrodes and charge metal. advantage of electric arc furnace: there is production of pure steel at shortest time of 2 hours ************** BASIC OXYGEN FURNACE ************* ************************* ELECTRIC ARC FURNACE ***************************** CASTING OF STEEL Molten steel is allowed to solidify in various form with the help of different casting methods with include: Continuous casting - Molten steel is poured from a ladle into a tundish( temporary con

 Group: Module II Title: Grinding Operation Group: Mechanical Engineering Video presentation Grinding is a process of removing material by the abrasive action of revolving wheel on the surface of the workpiece in order to bring it to the required shape and size. Types of Grinding machine include: a) Rough grinders Floor stand and bench grinders Portable and flexible grinders Swing frame grinders Abrasive belt grinders b) Precision Grinders- They are those that finish parts to a very accurate dimensions Cylindrical grinders which include ccenter-type(plain), Universal grinders and centreless grinders. Internal grinders Surface grinders which include reciprocating table (Horizontal spindle and Vertical spindle), Rotating spindle Tool and cutter grinders Special grinding machine ********Centerless grinding************

 Group: Craft cert, Module 1 Course: Fabrication Techology Field: Mechanical Engineering  The following are hand cutting and forming tools found in the mechanical workshop. Watch the video to learn more. If you have any question kindly feel free to ask in the comments section below. By Matambo (DTAL)

 Introduction of steel making The principal ore where iron is extracted is Magnetite which contains 70%+ of the iron.   Others include haematite, siderite and limonite.