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WorksheetsIMC20523 COMPOSITE PRODUCT FORMING (CONTINUOUS PROCESS) - P
Total questions: 25
Worksheet time: 20mins
According to profile in Figure 1 and assume the density of glass fibers are 2.55 g/cm3 and TEX of fiber 4.4 (g/1000m). Calculate the profile area.
Profile area = 8.5cm2
Profile area = 9.5cm2
Profile area = 6.5cm2
Profile area = 10.5cm2
According to profile in Figure 1 and assume the density of glass fibers are 2.55 g/cm3 and TEX of fiber 4.4 (g/1000m). Calculate the how many roving will use to produce that product using pultrusion machine
~ 300 roving
~ 296 roving
~ 250 roving
~ 277 roving
Give suggestion type of mould release will used in pultrusion process
Semi-permanent mould release agents
Internal mould release agents
Sacrificial mould release agents
Paste / Liquid Wax
What are the principles of pultrusion process
Pultrusion a closed mold process in which matched male and female molds, pre-placed with fiber pre-form, are clamped to form composite components.
Pultrusion is a process for fabricating a composite structure in which continuous reinforcements either previously impregnated with a matrix material or impregnated during winding.
Pultrusion is a cost-effective automated process for manufacturing continuous, constant cross-section composite profiles.
Pultrusion is one of the primary manufacturing process used for automotive composite applications today.
Identify what is element A in diagram 2?
Infeed
Deeper
Guides
Gripper
Identify what is element B in diagram 2?
Resin Bath
Deeper
Gripper
Infeed
Identify what is element C in diagram 2?
Heating Element
Die
Mould
Gripper
Identify what is element D in diagram 2?
Heating Element
Die
Mould
Gripper
Identify what is element E in diagram 2?
Guidance Devices
Pre Heater
Control Panel
Pulling Mechanism
Identify what is element F in diagram 2?
Deeper
Gripper
Control Panel
Pulling Mechanism
Identify what is element G in diagram 2?
Deeper
Gripper
Resin Bath
Infeed
Identify what is element H in diagram 2?
Deeper
Creel Fibers
Resin Bath
Roving Fibers
What kind of force is used in the principle of operating the pultrusion machine?
Drawing force
Pulling force
Rolling force
Extrude force
Advantage of Pultrusion Process
The use of high volume of fiber gives the product a good strength compared to the hand lay-up process.
Products are manufactured continuously in large quantities
The machine is easy to operate and does not require much worker.
Can produce complex product.
What is the content of the mixture in the matrix system in the pultrusion process.
Polyester Resin
Filler
Mould Release Agents
Peroxide - MEKP
How much percentage of a filler would be added to the matrix system for the pultrusion process.
10% to 30%
20% to 30%
20% to 50%
10% to 50%
What are the properties of polyester resins used in pultrusion processes?
Viscous
Pale colored liquids
The addition of styrene in amounts of up to 50% helps to make the resin easier to handle by reducing its viscosity.
Pink or purple of colored liquids
What is the tool used to measure the temperature of the pultrusion machine?
Thermocouple
Thermometer
Heater element
Control panel
Every production of product that uses a different profile needs to use how much of Preforming Guides / Infeed?
2 or 3
1 or 2
3
2
What are the types of pulling mechanisms used in the gripper for pultrusion process?
A
B
A-B
A and B
During set-up process, which type of pulling mechanisms will use.
A
B
A-B
A and B
For running the pultrusion process, which type of pulling mechanisms will use.
A
B
A-B
A and B
For large profile or during troubleshooting process, which type of pulling mechanisms will use.
A-B
A and B
B
A
Choose the wrong statement regarding temperature setting in the pultrusion process
In putrusion process we have 2 type of zone for temperature, it is pre-heating and heating zone.
Temperature for pre-heat should be higher compare to heating zone.
Temperature for heating zone should be higher compare to pre-heat zone.
Each zone shall be controlled by at least 2 heating elements and one thermocouple and will display on the control panel
What distinguishes pultrusion processes from closed mold and open mold?
Type of materials used
Type of resin
Operator
Pigment and mould release agent used
