Notesale: Turn your study into money

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Wednesday 20th January 2016
What are NOxS?
What are NOxs?
They are Nitrogen Oxides, Saharan dust, a type of pollution
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What are the health effects of NOxs?
They will trigger problems like Asthma and heart disseise
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Give one solution to NOxs?

Diesel cars/ motor vehicles have gotten tighter over the years
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Used to communicate essential information about a

Form

Shape and style of the product
...


User requirements

The qualities that makes it attractive to customers
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Describe the advanced specification for a computer
keyboard
...
Explain the importance of the advanced specification for a
computer keyboard
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Apply and understand to another engineered product
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 What is an advanced specification?
 When designing a product engineers must consider:
 Legal and safety requirements like copyright and things that
might harm people
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Infrared sensor

It’s a very safe product, cells and
Plastic and rubber,
not harm could not be made by
the rubber is for the
this product because its too big
buttons and the
to swallow and there are no
plastic is for the shell
sharp edges, it has not been
of the remote
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V remotes like this one so
the television screen by sending signals
there fore its not copyright
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Easily accessible to if the batteries run out
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They emit more NOxS than petrol
This requires exhaust after treatment such as SCR
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SCR

N2H20

18th January 2016
What is a technical specification?
A technical specification is something that is made with specific
designs to suit needs
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g
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The advanced Specification in compromised of:

Performance requirements- what are the technical feats that must be achieved
by the product

Material and Component:

How should the materials and components preform in the product?

Ease of Manufacture

How can the product be manufactured in the most efficient way?

Ease of Maintenance

How can the product be manufactured in the most efficient way?

Legal and safety requirements

Are there any recognised components or standards of legalisation that must be
complied with with during manufacture and maintenance?

What is the specification of this product?

Form

The pipe bender is made if metal and is in mostly a
curved shape designed to fit the hand
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User requirements

The user requirements of the pipe bender is to be
able to…





Bend pipe smoothly
Be able to grip on to it
For it to be easily accessible
Easy to use
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Level 2 Pass
Outline relevant basic
and advanced
specification criteria
for an engineered
product
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A Level 2 Pass at very least, I am targeted at this level, but I expect to get a
Level 2 Merit
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The new doser effect concept develops high pressure spray – a peak injection
pressure of 50 bar
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Wednesday 3rd February 2016
What properties do metals have?
Depending on what metal you are talking about…
Copper is a good electricity conductor
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Titanium’s properties are to be extremely strong
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Current competitor SCR doser design
I would use aluminium because it is a strong and reliable material
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The number of stages is due to having to stretch the sheet a bit at a
time
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The injector is made in China
The SCR housing is made in Turkey

Today my learning has been Amber 2

Friday 29th January 2016

Types of engineering processes
Welding
Casting
Forging
Extracting
Moulding
Soldering
CNC machine = Computer Numerated Control
Basically a computer that makes stuff
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The process is more wasteful of material than casting but allows us to get a
better surface and finished
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The paste melts when hot enough and then it flows into the joints leaving no
gaps
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The product needs to be
able to Withstand forces
like stretching and be
ductile
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The filter needs to still be
strong but not as strong
because there will only be a
liquid substance running
through it
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will go through it and they
are toxic
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and there are loads of
manufactures
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quarries
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Can be reused but will cost
a lot
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The plastic used will be PPA
and is heat resistant
because the liquid is hot
and chemical resistant!
There is plenty of this
because plastic is very easily
recycled
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Extraction & processing of
new materials

Pole Piece
Steel is extracted via
quarries and causes great
damage to the area around
it
...
This uses a
lot of energy and is not
good for the environment
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Alternative Materials

The materials that have
been already given are very
fit for purpose and are at a
suitable price to keep
buying in, however it the
material runs out which it
might there could be an
alternative material but this
one is the best for what it
has to do
...
However on the
down side very expensive
The processing of steel and
the disposal is producing
bad gasses which isn’t good
at all tis can not be
resolved
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However, the product is fit
for purpose, making the PPA
does cause harm to the
environment in terms of
global warming but apart
from that is fits the
purpose
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Plastic, there is many types
of plastic, the one chosen is
quite strong and doesn’t
corrode so we are very
fortunate to have this
product, Polypropylene is
also another non corrosive
plastic which is used for the
bottle tops of bleach, a
strong corrosive alkali
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Then the die is taken out and put in
a separate compartment which uses a piston to push the red plastic pellets
which are now liquid through into a shape, however it forces it into water so it
cools quickly
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Wednesday 27th April 2016

Processing

Types of processes: Extrusion and CNC
Extrusion
Heat to 195 degrees for plastic pellets
Place in the Die
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They speed up the process
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Advantages and Disadvantages of Extrusion Moulding




Low cost- Cheap
Flexibility- You can create in any shape and in any size
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However,




The hot plastic exits the extruder and is still hot so it may change shape
When the plastic flows out it expands and this is a down side called the die swell
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In this case you might have to create the
shape yourself
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 Don’t need training
 One person can control several items and machines



Disadvantages
Expensive to buy
Loss of skills in the workforce

Wednesday 18th May 2016
Machining Techniques - Turning, Milling, Drilling
Forming Techniques – Die Casting, Sand casting, Investment Casting, Drop Forging, Press
Forging
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g
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The bed of the lathe is made via casting
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Drilling: Pillar Drill – The pillar drill is used for drilling holes in general materials like wood
and plastic, there are a couple of health and safety features on the drill, one there is a safety
guard for any excess material that decides to spin round and fly off
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