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DTE GCSE > Past Papers > Flashcards

Past Papers Flashcards

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1
Q

Problems with painting

A

Paint would scratch more easily than zinc and offer no protection Polymer powder coating is more wear-resistant than paint

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2
Q

Hazards of powder coating / zinc galvanising and solutions

A

• Fumes – wear mask and use fume extraction
• Airborne particles – wear eye protection

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3
Q

How is CAD used?

A

CAD software is used to draw the exact shape and dimensions of the component to be machined; this information is then converted to a Part Program that can be downloaded on to a CNC machine for the manufacture of the component.

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4
Q

What should you do before doing a batch of a product in a CNC machine?

A

• To confirm that the program produces a product that meets the specification
• To check for possible collisions with ancillary equipment (clamps etc)
• To confirm cutting parameters are correct (speeds, feeds, depth of cut etc)

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5
Q

2 industrial uses of robots in manufacturing

A

• Pick and Place for automated assembly from circuit boards to cars
• Processes – welding, painting, etc

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6
Q

Explain the difference between CIM and CAD

A

CIM is the integration of all the functions in a manufacturing enterprise from product concept to sale and dispatch. CAD/CAM is part of a CIM system, concerned only with the design and production element of a manufacturing enterprise.

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7
Q

2 uses of Industrial Control Systems in a modern factory

A

• Monitoring and adjusting environmental temperature in the workplace
• Planned maintenance procedures

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8
Q

2 examples of smart materials in engineering

A

• Shape memory – simple bi-metal strip such as in Kettle or Iron
• Chromic materials – colour change in response to pressure or
temperature

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9
Q

Properties of rubber

A

Grippy
Washable
Comfortable
Sweatproof

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10
Q

Advantages of composite materials

A

Lightweight
Strong
Can be moulded into complex shapes
No finish required

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11
Q

Disadvantages of composite materials

A

Time
Expensive
Can’t be recycled

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12
Q

Dangers of lathe

A

Spinning fast

Swarf

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13
Q

PPE

A

Personal Protection Equipment

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14
Q

Tools for casting

A

Cope, split pattern, runner, sprue, crucible

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15
Q

Tools for making holes

A

Centre punch
Drill
Twist drill

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16
Q

Tools for deburring holes

A

Pillar drill

Countersink bit

17
Q

What is deburring

A

Remove sharp edges by drilling the holes

18
Q

Tools for finish surface

A

Abrasive sheets and buffing wheel

19
Q

Why finish surfaces?

A

Remove scratched and polish

20
Q

Why is steel hardened?

A

Wear resistance and increases usefulness

21
Q

Disadvantage of hardening steel

A

Makes it brittle

22
Q

Describe hardening low carbon steel

A

Heat to cherry red, dip in carbon, cool, repeat.

23
Q

Information client needs to give the designer

A

Colour
Price
Storage capacity

24
Q

Why are micrometers good?

A

Faster and more accurate

25
Q

Industrial method for cutting

A
  • Stamping
  • Press forming
  • Plasma cutting
  • CNC milling machine
26
Q

2 environmental impacts of plastic

A

Crude oil

Non-biodegradable

27
Q

2 features for a successful vacuum formed product

A

Draft angle

No sharp corners

28
Q

2 health and safety risks when working with GRP

A
  • Toxic fumes
  • Irritation from fibres
  • Explosion/fire risk
  • Storage leaks/contamination
29
Q

Advantages to basically anything

A

Accurate and easy

30
Q

Advantages of a just in time system

A
  • less stock storage

* Less time required to locate parts

31
Q

Disadvantages of just in time system

A
  • Needs a highly coordinated work force
  • Sharing of data
  • Dependant on reliable supply chains
  • Production may stop due to stock shortages
  • Less flexibility if customers require customized items
32
Q

How are robots used

A

Pick and place

Simple processes such as spot welding

33
Q

How do robots reduce health and safety risks

A

Lift heavy weights

Carry out processes in hazardous environments

34
Q

Alloy

A

Metallic material consisting of multiple metals

35
Q

Reasons why metals are alloyed

A
  • Corrosion resistance
  • Improving material properties
  • fluidity
  • Improving machining characteristics
  • Hardness
  • Elasticity
  • Change melting point
36
Q

How can costs change

A
  • Change in materials based on supply and demand
  • Energy costs
  • Transport costs
  • Unforeseen maintenance costs
  • Unforeseen quality control issues
  • Improved performance due to experience
37
Q

Fixed production costs

A
  1. Set up costs
  2. Machinery
  3. Rates/rents for a year
  4. Labour rates agreed for fixed periods of time

DTE GCSE (10 decks)

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