Red Seal Auto Body Technician flashcards
Red Seal Auto Body Technician · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- WHMIS 2015 supplier label
- A workplace label with six required elements: product identifier, supplier identifier, hazard pictogram, signal word, hazard statement, and precautionary statement, used for hazardous products in Canada.
- Air-purifying respirator limit
- An air-purifying respirator filters contaminants but cannot supply oxygen; it must not be used in oxygen-deficient or immediately dangerous to life or health atmospheres.
- Lockout/tagout verification
- Isolate all energy sources, apply lock and tag, then verify zero energy before work; only the person who applied the lock may remove it.
- Fire class extinguisher rule
- Class A uses water or foam, Class B uses CO2 or dry chemical, Class C requires non-conductive agents, and Class D uses special dry powder for combustible metals.
- Unibody construction
- A vehicle design where stamped steel panels are welded into a stressed shell; rockers, aprons, and rails carry the load rather than a separate frame.
- Boron steel repair limit
- Ultra-high-strength boron or martensitic steel is generally not heat-repairable; OEM procedures usually require replacement because heat destroys its martensitic microstructure.
- Galvanic corrosion
- Corrosion that occurs when two dissimilar metals, such as aluminum and steel, contact in the presence of an electrolyte; the more anodic metal corrodes.
- Rivet-bonding aluminum
- A joining method for aluminum structures using self-piercing rivets plus structural adhesive, with dedicated tools and isolation from steel to prevent galvanic corrosion.
- Repair versus replace rule
- Replace a panel when it cannot be restored to pre-accident shape and strength within OEM limits, when access is impossible, or when repair cost exceeds replacement.
- Betterment in estimating
- A reduction in settlement for wear or prior damage unrelated to the loss, such as worn tires or batteries, so the vehicle is not improved at the insurer's expense.
- Diminished value
- The loss of market value a vehicle suffers after a properly completed repair, separate from the actual cost of the repair itself.
- Total loss threshold
- When repair cost plus salvage value exceeds the vehicle's actual cash value, the vehicle is typically declared a total loss, though thresholds vary by jurisdiction.
- Hammer and dolly technique
- The dolly is held behind a low spot while the hammer strikes the high spot, stretching and leveling the metal during panel straightening.
- Heat shrinking metal
- Heating a small stretched area to dull red and quenching with a wet rag or shrinking hammer contracts the metal and removes stretch.
- MIG brazing use
- A silicon-bronze joining process with low heat input used on high-strength steel outer panels to preserve coating and limit heat-affected zone.
- Panel gap tolerance
- A typical panel gap tolerance of about 3 to 6 mm is checked before and after repair to confirm fit and alignment of closures.
- Datum point measurement
- A frame measurement method comparing control points to OEM specifications, usually within plus or minus 3 mm unless the OEM states otherwise.
- Pull direction rule
- Pulling force must oppose the impact direction; use multiple pulls and re-measure after each pull to avoid over-pulling the structure.
- Squaring check
- Measuring diagonals of frame or body openings; equal diagonals indicate a square structure, while unequal diagonals indicate sway or diamond damage.
- Structural sectioning limits
- Structural rails may be sectioned only at OEM-approved locations, using proper backing plates, weld procedures, and restored corrosion protection.
- Squeeze-type spot welding
- A resistance spot welding method preferred by OEMs for high-strength steel panels; weld nugget diameter and tear-out are verified after welding.
- Plug weld purpose
- A plug weld fills a hole to join panels where factory spot welds are inaccessible; hole diameter should roughly equal or slightly exceed the original nugget.
- Zinc fume hazard
- Welding galvanized or zinc-coated steel produces zinc oxide fumes; remove coating near the weld zone and use ventilation and respiratory protection.
- Weld-through primer
- A conductive coating applied to mating surfaces before welding to protect the joint from corrosion while allowing current to flow for the weld.
- Body filler substrate rule
- Polyester body filler is applied over bare metal or epoxy primer, never directly over lacquer or enamel, and thickness is minimized by straightening first.
- Guide coat function
- A contrast spray or powder applied over primer or filler that reveals low spots and imperfections during block sanding.
- Epoxy primer role
- A primer that provides corrosion protection and adhesion on bare metal, applied before filler or used as a sealer under topcoat.
- Sanding grit progression
- Coarser grits strip and shape, finer grits remove prior scratches; never jump more than one grit step, such as 180 to 320.
- Pot life
- The usable time after mixing a two-component paint product; exceeding it causes poor cure and adhesion failure.
- Flash-off time
- The waiting period between paint coats that allows solvents to escape; insufficient flash-off causes runs and solvent popping.
- HVLP transfer efficiency
- High-volume low-pressure guns typically achieve 65 to 85 percent transfer efficiency, reducing overspray compared with conventional spray guns.
- Windshield urethane drive-away
- Bonded windshield adhesive requires primer and a manufacturer-specified minimum drive-away time, often one to four hours depending on temperature and humidity.