Extrusion and Drawing Manufacturing Processes Outline Extrusion of
- Slides: 41
Extrusion and Drawing Manufacturing Processes
Outline Extrusion of Metals Extrusion Defects Extrusion Equipment Extrusion of Nonmetals Drawing Process Drawing Equipment
Extrusion A compression process in which the material is forced to flow through an opening to produce a shape with a specific crosssection input die pump product
Examples of Extruded Parts
Extrusion Metals Nonmetals
Metal Extrusion Direct Extrusion A ram compresses the material, forcing it through the die Indirect Extrusion The die is mounted on the ram; the material is forced out in the opposite direction of the ram movement
Direct Extrusion
Indirect Extrusion
Extrusion
Extrusion
Metal Flow
Example of an Extrusion Machine
Extrusion
Extrusion Hot Extrusion Involves pre-heating the material above the recrystallization temperature to increase ductility Cold Extrusion Does not pre-heat material; used to produce parts in finished or near-finished form
Extrusion Cold extrusion advantages: - Improved mechanical properties from work-hardening - Good control of dimensional tolerances - Improved surface finish (no oxide film) - No heating required - Competitive production rates and costs
Extruded Metals Typical extruded metals (hot or cold) Aluminum, copper, magnesium, zinc, tin and alloys of these Steel alloys are usually extruded hot; softer steels may be extruded cold Others such as titanium and refractory metals may be extruded, but with difficulty
Extruded Metals Extrusion Temperature Ranges Lead Aluminum and its alloys Copper and its alloys Steels Refractory alloys 200 -250 °C 375 -475 °C 650 -975 °C 875 -1300 °C 975 -2200 °C
Extrusion Defects
Extrusion Dies
Extrusion Dies
Example of an Extrusion Die
Extrusion of Nonmetals Materials rubber plastic solvents candy glass Products window seals door seals hose and tubing wire insulation candy canes
Hot Feed and Cold Feed Extrusion Ribbon Cold Feed Extrusion Heating/melting Hot Feed Extrusion Temperature zones Pellets
Extrusion of Nonmetals Candy Canes cone rollers candy
Extrusion of Nonmetals Window Seals Cold Feed Extrusion input windup die extruder takeaway belt die
Extrusion of Nonmetals Plastic Bags extruder die air cutting and sealing
Example of a Dual Extruded Product
Dual Extrusion Opposed Head extruder die Piggy Back die extruder
Dual Extrusion – White Side Wall Black rubber die White rubber die Exit die
Wire, Tube, Bar, Rod Drawing Extrusion pushes the material through the die; drawing pulls the material through the die
Drawing Products electrical wire cable wire stock for fences, hangers, shopping carts etc. rod stock for nails, screws, rivets, springs etc. metal bars
Drawing Process Advantages: - Close dimensional control - Good surface finish - Improved strength and hardness - Adaptability to mass production
Drawing of a Wire
Drawing
Drawing Preparation of the work material: 1. Annealing 2. Cleaning 3. Pointing
Single and Multi Stage Drawing
Gold is the most ductile metal that exists. 4 pounds of gold can be drawn into a wire that stretches across the country.
Tube and Bar Drawing
Draw Bench Production Process
Summary Extrusion and drawing provide ways to form shapes with uniform cross sections at high production rates
- Manufacturing cost vs non manufacturing cost
- Job costing definition
- Uncontrollable cost example
- Manufacturing cost vs non manufacturing cost
- Additive manufacturing steps
- Manufacturing processes for engineering materials 5th
- In production process
- Introduction to manufacturing process
- Pultrusion process advantages and disadvantages
- Nontraditional manufacturing processes
- Similar
- Industrial revolution transition
- Fundamental manufacturing processes
- Concurrent in os
- Difference between extrusion and drawing
- Sheet metal extrusion process
- Side extrusion process
- Extrusion and drawing
- Quote sandwich example
- How to draw hair
- Types of joints in engineering drawing
- What is accented outline drawing
- Isometric vs orthographic sketches
- Views technical drawing
- What is the shape factor for non-circular extruded section?
- Extrusion ratio
- Isometric
- Engineering drawing conventions
- Spline shaft technical drawing
- Technical drawing terms
- Types of pictorial projection
- Wenger extruders
- Hmt hettstedt
- Mono extruder
- Disc-fx
- Extrusion detection
- S italica odontologia
- Blown film die
- Extrusion molding process
- Multi-layers co-extrusion feedblock
- Ektrusi
- Extrusion defects