NSSCO Metalwork and Welding 6188 study guide
NSSCO Metalwork and Welding 6188 · Work through your exam, one topic at a time.
NSSCO Metalwork and Welding (subject code 6188) is a senior secondary Ordinary Level technical subject in Namibia's national curriculum. It suits learners who want a practical trade grounding - in fabrication, welding, fitting and bench work - before entering employment, an apprenticeship, or further study at a vocational training centre or polytechnic. The NSSCO Metalwork and Welding 6188 study guide has 10 sections and about 3,549 words.
01Workshop safety, health and environment
This domain tests your ability to identify hazards in a metalwork workshop and to select controls in a defensible order. Expect questions on PPE, machine guards, gas cylinders, fire extinguishers, electrical safety, fume and noise, and housekeeping.
412 words, about 2 min02Metal materials and properties
This domain examines ferrous and non-ferrous metals, their properties, and how material choice follows from service conditions. You need to define properties precisely and to use simple identification tests rather than guessing from colour.
349 words, about 2 min03Measuring, marking out and inspection
This domain tests the correct selection and reading of measuring tools, accurate marking out from a datum, and inspection against a tolerance. Expect vernier calipers, micrometers, steel rules, try squares, protractors, dividers, scribes, punches and surface plates, plus concepts of accuracy, precision and zero error.
339 words, about 2 min04Hand tools and bench work
This domain covers the safe and effective use of bench hand tools: hammers, cold chisels, files, hacksaws, taps, dies, punches, scrapers and vice work. The exam tests technique, tool condition and the arithmetic of thread tapping.
370 words, about 2 min05Cutting, drilling and shaping
This domain examines powered and hand cutting, drilling machines and shaping operations. It tests drill selection, speeds, workholding, coolants and the sequence needed for an accurate hole.
359 words, about 2 min06Sheet metalwork and fabrication
This domain covers layout, cutting, folding, seaming, riveting and the bend allowance needed to make a flat pattern. The exam tests whether you can develop a component accurately and choose a suitable joint.
361 words, about 2 min07Heat treatment and forging
This domain covers annealing, normalising, hardening, tempering, case hardening and the forging operations used to shape hot metal. The exam tests temperatures, cooling rates, tempering colours and safe forging practice.
344 words, about 2 min08Joining: mechanical fastening, soldering and brazing
This domain compares permanent and semi-permanent joining methods: bolts, screws, rivets, pins, soldering and brazing. The exam tests joint selection, capillary action, flux use, filler temperatures and rivet allowance.
336 words, about 2 min09Welding processes and practice
This domain examines arc welding, gas welding and common weld defects. It tests process selection, current and polarity, electrode condition, arc length, travel angle and defect causes.
336 words, about 2 min10Technical drawing, planning and project work
This domain tests drawing interpretation, orthographic projection, dimensioning, scale and the planning needed to make a project. Expect questions on first-angle and third-angle views, line conventions, cutting lists, allowances, sequence and quality checks.
343 words, about 2 min