Identification of Materials based on Chemical Composition
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Questions and Answers

What is the maximum allowable phosphorus content for free cutting steel?

  • 0.04%
  • 0.50%
  • 0.11% (correct)
  • 0.20%

Which property class applies only to sizes up to 16 mm thread diameter?

  • 12.9
  • 9.8 (correct)
  • 10.9
  • 8.8

What is torque used to create in thread fasteners?

  • Tension (correct)
  • Heat
  • Compression
  • Vibration

For which size can a tempering temperature of 425°C be used?

<p>M20 and larger (D)</p> Signup and view all the answers

What is critical with the amount of tension created in the bolt?

<p>The amount of tension (C)</p> Signup and view all the answers

Which elements must alloy steel contain?

<p>Chromium, Nickel, Molybdenum, Vanadium (D)</p> Signup and view all the answers

What is the maximum allowable sulfur content for allowed classes?

<p>0.35% (B)</p> Signup and view all the answers

What is the function of a pneumatic torque wrench?

<p>To multiply torque (C)</p> Signup and view all the answers

In what range do nuts of higher property classes need to be used in place of nuts of lower property classes?

<p>8.8-14.9 (A)</p> Signup and view all the answers

What should be used to adjust the tightness of nuts and bolts to a desired value?

<p>Torque wrench (C)</p> Signup and view all the answers

What should one not do when using a bar type torque wrench?

<p>Touch anything with the beam of the wrench (D)</p> Signup and view all the answers

What defines a power tool?

<p>Activated by a power source (B)</p> Signup and view all the answers

What is the purpose of sharpening a flat scraper?

<p>To improve the cutting efficiency (A)</p> Signup and view all the answers

How should one avoid overheating while grinding a flat scraper?

<p>By using wet wheel grinding or cooling arrangement (C)</p> Signup and view all the answers

What type of grinding wheel is suggested for sharpening flat scrapers with carbide tips?

<p>Silicon carbide wheel (B)</p> Signup and view all the answers

What is the recommended lubricant to be used during honing of a flat scraper?

<p>Light mineral oil mixed with kerosene (B)</p> Signup and view all the answers

How should the flat scraper be held while grinding the cutting edges?

<p>Vertical and flat on the tool rest (B)</p> Signup and view all the answers

What movement should be applied when honing the faces of a flat scraper?

<p>Movement as shown in Fig 5 (D)</p> Signup and view all the answers

What is the purpose of a gauge in mass production?

<p>To check product dimensions against acceptable limits (D)</p> Signup and view all the answers

Which material are gauges typically made of?

<p>Tool steel (B)</p> Signup and view all the answers

What do gauges help to segregate in mass production?

<p>Acceptable and non-acceptable products (A)</p> Signup and view all the answers

What is one of the advantages of using gauges in production processes?

<p>Faster checking within specified limits (B)</p> Signup and view all the answers

Which of the following is NOT a common material for making gauges?

<p>Copper (B)</p> Signup and view all the answers

What does heat treatment do to the material of a gauge?

<p>It strengthens the material (C)</p> Signup and view all the answers

What is the purpose of snap gauges?

<p>To check diameters and threads within certain limits (D)</p> Signup and view all the answers

How are internal threads typically checked?

<p>By comparing the size to cylindrical plug gauges (D)</p> Signup and view all the answers

What is the main material used to make slip gauges?

<p>Hardened steel with low thermal expansion (B)</p> Signup and view all the answers

How are snap gauges generally shaped?

<p>C-shaped (A)</p> Signup and view all the answers

What is the function of thread plug gauges?

<p>Check internal threads with 'Go' and 'No-Go' ends (B)</p> Signup and view all the answers

Why are slip gauges hardened throughout?

<p>For stabilization and precision (B)</p> Signup and view all the answers

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