front 1 What is a sand slinger? | back 1 feeds the sand to the molding board and molding line |
front 2 Chaplets | back 2 internal cavities or passages |
front 3 Hot Spots | back 3 Isolated pools of liquid form inside solidified metal |
front 4 Fillets and Rounds | back 4 radial edge features |
front 5 Draft | back 5 taper or slope given to cores or other parts |
front 6 Shrink | back 6 Metal shrinks as it transforms from liquid to solid |
front 7 sprue | back 7 the entry point and vertical passage for molten plastic material |
front 8 riser | back 8 a reservoir built into a metal casting mold to prevent cavities due to shrinkage |
front 9 runner | back 9 channels in a mold through which molten metal is poured to fill the mold cavity |
front 10 cavity | back 10 the portion of a cast which forms the external shape |
front 11 pouring basin | back 11 funnel-shaped inlet, situated atop the system |
front 12 Precision/Investment Casting | back 12 wax to make the mold and then replaced with metal to create complex and intricate parts |
front 13 what the precision of the instruments is | back 13 Degree of repeatability of the instrument |
front 14 How does temperature affect measuring instruments? | back 14 Temperature control is very important to maintain high accuracy. 20ºC±0.3ºC(68ºF±0.5ºF) is the standard measuring temperature |
front 15 Drilling for taps | back 15 drill a smaller hole than the tap |
front 16 Starting Drills | back 16 make sure drill is not touching piece |
front 17 Drill and boring round holes | back 17 drill a smaller hole then bore it to the correct size |
front 18 Continuous Chips | back 18 not ideal can cause defects. to stop increased rotation or slow-cutting speed |
front 19 Welding rod designations | back 19 1st = Electrode 2nd= Min. tensile (in KSI) 3rd=position, 4th=type of current and coating |
front 20 Brazing (Bronze Welding) | back 20 process of joining two pieces of bronze using a third metal alloy with a lower melting point than the base metals |
front 21 MIG | back 21 wire fed |
front 22 TIG | back 22 rod fed |
front 23 Where would you use submerged arc welding? | back 23 Limited to flat and horizontal welding. Used in big projects like ship building. |
front 24 Can you weld aluminum to steel [other than with friction welding]? | back 24 yes, explosive welding |
front 25 DCEN (Straight Polarity) | back 25 good for fillet welding in the flat position, flats, and vertical up welding |
front 26 DCEP (Reverse Polarity) | back 26 The metal flow is from the work-piece to the electrode |
front 27 Stick saftey | back 27 protective wear |
front 28 Oxyacetylene Welding Saftey | back 28 acetylene must be below 15 psi |
front 29 What DC stick welding process do we use for overhead welding? | back 29 DCEP-reversed |
front 30 What DC stick process do we use for horizontal – flat welding? | back 30 DCEN |
front 31 Flash Welding – How they make bandsaw blades | back 31 Uses heat and pressure as this is another type of resistance welding |
front 32 Resistance Seam Welding | back 32 like overlapping spot welding |
front 33 Inertial Welding | back 33 friction welding |
front 34 Welding Dissimilar Metals | back 34 combining different types of metals |
front 35 Welding Thin Metal | back 35 typically done with mig |
front 36 electron beam welding | back 36 AUTOGENOUS in that it used the base metal to create the weld |
front 37 Types of rolling | back 37 cold, hot |
front 38 Cambering, spreading | back 38 roll a piece flat by rolling with round rollers |
front 39 Rolling defects | back 39 Wavy edges – roll bending Cracks – low material ductility at the rolling temperature |
front 40 Types of forging | back 40 cold, hot |
front 41 Grain alignment | back 41 smashed together |
front 42 Sheet-metal forming | back 42 process is performed on a press using a set of tools called die and punch |
front 43 broaching | back 43 tool removes material from a workpiece in a consistent, continuous, and accurate way |
front 44 TiN [titanium nitride] | back 44 It is used as wear protection in cutting tools |
front 45 Define a properly knurled part | back 45 sharp diamond points |
front 46 Surface Plate | back 46 the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup |
front 47 Angle plate | back 47 plate that is set to an angle that is used as a reference |
front 48 Micrometer Use | back 48 precision measuring tools used to measure very small objects |
front 49 Burning | back 49 utilizes a high temperature for removing material |
front 50 Types of Grinding | back 50 Surface, Center, Center-less, |
front 51 Mohs Scale | back 51 Used to determine hardness |
front 52 Grit Sizes | back 52 based on screen mesh size |
front 53 Precision | back 53 highly precise and efficient manufacturing process |
front 54 Snag Grinding | back 54 Rough grind |
front 55 What abrasive is the hardest? | back 55 Synthetic Diamonds |