OSE Metal Fabrication Certificate: Difference between revisions
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=Abrasive Cutting and Grinding= | =Abrasive Cutting and Grinding= | ||
Using an abrasive cutoff saw. Cutting small diameter rounds rapidly. Cutting large-diameter rounds. Mounting new grinding wheels. Distinguishing when material gets cut-hardened. Grinder basics. Using cutoff wheels and grinding wheels. 5 and 15 amp grinders. Locking in a grinding wheel. Replacing motor brushes. Repairing a broken cord. | Using an abrasive cutoff saw. Cutting small diameter rounds rapidly. Cutting large-diameter rounds. Mounting new grinding wheels. Distinguishing when material gets cut-hardened. Grinder basics. Using cutoff wheels and grinding wheels. 5 and 15 amp grinders. Locking in a grinding wheel. Replacing motor brushes. Repairing a broken cord. [[Abrasive Tools Exam]]. | ||
=Measuring= | =Measuring= | ||
Revision as of 20:46, 29 July 2015
Methodology
The OSE Metal Fabrication Certificate is the first in OSE's line of certification based on well-defined criteria and testing. The basic test involves MIG welding, torching, grinding, drilling, marking, tool selection skills, and others. These skills are based on a generalized skill set indispensible to effective functioning in OSE build events.
The method of certification involves: (1) skills presentation by insructor; (2) hands-on practice by individuals; (3) an exam by the instructor; (4) documentation of results including a picture, comments, and checklist of approved fabrication tasks.
Grading is based not on pass/fail basis, but on a method that fosters continuous improvement. As such, an Exam is simply a documentation of someone's skill set - and involves taking pictures and notes of a person's results based on well-defined tasks. These are documented on the wiki as the category.
Tool Selection
What tools to use for cutting, drilling, holes, severing, measuring, bending, forming, etc.
Safety
Eyewear. Gloves. Steel-toed boots. Welding helmets. Hard hats. Excess welding wire. Sharp corners. Heavy objects. Use of hoist. Fire extinguisher. First aid kit. Eyewash. Grinding safety. Welding fumes. Zinc plating and galvanized steel. Sound cues: metal squeaks and gas leaks. Safety Exam.
MIG Welding
Ability to weld from sheet steel to 1/2" steel. Understanding wire feed speed and power settings, both high and low. Proper tension on MIG wire. Knowing when liner is clean. Understanding shielding gas flow. Keeping guard clean. Replacing tips. Keeping work area clean. Protective clothing. Turn-on and shutoff. Welding Exam.
Torching
Understanding proper gas pressure. Uderstanding tip size. Cutting straight lines. Cutting circles. Cutting 1" stock. Cutting sheet stock. Torching Exam
Brazing
Understanding when metal is hot enough. Range of applications for brazing. Brazing Exam.
Abrasive Cutting and Grinding
Using an abrasive cutoff saw. Cutting small diameter rounds rapidly. Cutting large-diameter rounds. Mounting new grinding wheels. Distinguishing when material gets cut-hardened. Grinder basics. Using cutoff wheels and grinding wheels. 5 and 15 amp grinders. Locking in a grinding wheel. Replacing motor brushes. Repairing a broken cord. Abrasive Tools Exam.
Measuring
Using a correct reference point. Transfer punching. Using tracing paper to mark patterns. Using a speed square, level, carpenter's square, tape, and ruler. Match drilling. Measuring Exam.
Using a Milling Machine
X, Y, Z motion of slides. Using a milling bit. Using a mill as a drill. Feed rate. Cutting fluids. Proper workpiece fixation. Using a Digital Readout for distance measurement. Centering a hold in a shaft using the digital readout. Milling Exam.
Precision
Using calipers. Using a dial indicator.
Ironworker machine: Metal Shear, Punch, and Angle Cutter
Procedure for punching holes. Replacing dies. Understanding die size. Open center bidirectional hydraulic valves. Workpiece hold-down. Force amplification from blade gap and safety. Power Cube operation. Ironworker Exam.