Soldering and Brazing
Simple Metal Work Tools and Cutting
Workshop Safety Rules and Regulations
<h1><strong>WORKSHOP SAFETY RULES AND REGULATIONS</strong></h1> CONTENT <ol> <li>Safety Precautions or Attitudes in the Workshop</li> <li>General Safety Precautions in Workshops</li> <li>Accident Prevention Techniques</li> <li>Types of Fire</li> <li>Safety Precautions in Fire Accidents</li> </ol> <h2><strong>Safety Precautions or Attitudes in the Workshop</strong></h2> The following are the safety precautions or attitudes in the workshop: 1. Obedience: Pupils must obey the instructions of their teachers at all times 2. Humility: Show respect to everybody and when you are in doubt about anything, ask question. 3. Fiddling: Never play with any tool, equipment and machine in the workshop, such as ‘’ON/OFF’’ switch. 4. Horseplay: Do not run around in the workshop. Always, be patient and never rush. 5. Negligence: Report any fault or injury to your teacher, no matter how small. <h2><strong>General Safety Precautions in Workshops</strong></h2>
Driving Tools and Cutting Tools
<h1>DRIVING TOOLS AND CUTTING TOOLS</h1> <p>CONTENT</p> <ol> <li>Driving Tools</li> <li>Cutting Tools</li> </ol> <p> </p> <h2>Driving Tools</h2> <h3>Definition of Driving Tools</h3> <p>Driving tools are tools used for pushing in nails, screws into position. Examples are:</p> <h3>1. Hammers</h3> <p>Hammers have two distinct parts, the handle and the head. While the handle can be made of wood or metallic material, the head is always made of high carbon steel. The hammer is classified according to the type of head, hence we have:</p> <p>Ball peen, straight peen, cross peen and planishing hammer.</p> <p><img class="size-full wp-image-36657 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/driving-tools.jpg" alt="Driving tools - Hammers" width="330" height="318" /></p> <h3>2. Mallets</h3> <p>This is a soft hammer whose head is made of soft material like synthetic rubber to prevent the head from damaging the surface of the work piece.</p> <p><img class="size-full wp-image-36658 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/mallets.jpg" alt="Driving tools - mallets" width="442" height="197" /></p> <h3>3. Punches</h3> <p>These are used for producing holes on thin sheets of metal, to mark holes for drilling and to remove rivet. Examples are centre or dot punch, and pin punch for marking drill points.</p> <p><img class="size-full wp-image-36703 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/punches.jpg" alt="Driving tools - Punches" width="260" height="164" /></p>
Woodwork Materials and Machines
Machine Motions: Linear Motion
Properties of Materials: Properties of Wood
Unfortunately we could not locate the table you're looking for.<h1>PROPERTIES OF MATERIALS - WOOD</h1> <p>CONTENT</p> <ol> <li>Definition of Materials</li> <li>The Definition of Wood</li> <li>Identification of Wood</li> <li>Classification and Properties of Wood</li> <li>Differences in the Properties of Hardwood and Softwood</li> <li>Properties of Materials and Identification of Wood, Timber, Structure of Wood</li> <li>The Growth of Timber and Wood Structure</li> <li>Five Main Parts Cross Section, Classes and Properties</li> </ol> <p> </p> <h2>Definition of Materials</h2> <p>Materials are substances from which other things can be made. Basically, they can be classified into two: metallic and non-metallic. Furthermore, the metallic ones can be subdivided into ferrous and non-ferrous metals, while the non-metallic ones can be divided into natural and synthetic materials.</p> <p><img class="size-full wp-image-19706 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/properties-of-materials.jpg" alt="Properties of materials" width="600" height="175" /></p> <p> </p> <h2>The Definition of Wood</h2> <p>One of the materials that is supplied by nature is wood. Wood is commonly used in some engineering manufacture because it is light, strong and can be worked upon easily.</p> <p>Wood is a material obtained from trees. It is made up of cellulose and lignin each consisting of 60% and 28% respectively.</p> <p> </p> <h2>Identification of Wood</h2> <p>Generally, wood has very good combination of colours to give it high decorative value. This makes it possible to identify some woods by their colour. Examples are:</p> <p></p>
Maintenance of Tools and Machines
<h1><strong>CARE AND MAINTENANCE OF METAL WORK TOOLS</strong></h1> CONTENT <ol> <li>Care of Files</li> <li>Care of Hacksaw</li> <li>Care of Boring Tools</li> <li>Concept of and Need for Maintenance</li> <li>Types of Maintenance</li> </ol> <h2><strong>Care of Files</strong></h2> (i) A file cuts the metal during the forward stroke; therefore pressure on the file should be released during the return stroke. (ii) A new file should be used for soft metals such as brass, zinc, or copper. It should not be used for filing welded joints or surface of casting. (iii) A file must not be used without a handle because it is dangerous. Make sure the handle is firmly secured. (iv) The file should be cleaned regularly with a wire brush or file card to remove iron filing embedded in the teeth of the file and enable the file to cut better. <h2><strong>Care of Hacksaw</strong></h2> (i) Ensure the jobs are rigidly clamped to the vice. (ii) The blade should be fixed so that the teeth are pointing away from the handle. (iii) Tension the blade by the tensioning wing-nut making sure that the tension is right. Incorrect tension will lead to breakage of the blade. (iv) For solid copper or brass, use coarse blade about 14 to 18 teeth per 25mm for sheet metal and thin strip use teeth per 25mm. (v) Use moderate speed in cutting, about 40 to 60 strokes per minute. (vi) Use as much length of the blade as possible. <h2><strong>Care of Boring Tools</strong></h2>
Metal Work Machines
Rotary Motion