Webinars sample
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SFSA Webinars
Contents
- 1 SFSA Webinars
- 1.1 What is Steel?
- 1.2 What Makes Steel Strong?
- 1.3 Heat Treating Steel
- 1.4 What Makes Steel Stainless?
- 1.5 Introduction to Steel Melting Practices
- 1.6 Pouring and Gating Steel
- 1.7 Induction Melting Steel
- 1.8 Design of Experiments - Part 1 - Measurements
- 1.9 Design of Experiments - Part 2 - Experiments
- 1.10 Design of Experiments - Part 3 - Analysis
- 1.11 Clean Steel - Part 1
- 1.12 Clean Steel - Part 2
- 1.13 Clean Steel - Part 3
- 1.14 Clean Steel - Part 4
- 1.15 Clean Steel - Part 5 - Gating 1
- 1.16 Clean Steel - Part 6 - Gating 2 - Lip Pour
- 1.17 Clean Steel - Part 7 - Gating 3 - Bottom Pour
- 1.18 Clean Steel - Part 8 - Innovative Pouring and Gating
- 1.19 Porosity - Holes in Steel Castings
- 1.20 Porosity - Air Entrainment and Blowholes
- 1.21 Porosity - Pinholes
- 1.22 Porosity - Inclusions and Porosity
- 1.23 Porosity - Shrinkage and Porosity
- 1.24 Cracks in Steel Castings 1
- 1.25 Cracks in Steel Castings 2 - Solidification
- 1.26 Cracks in Steel Castings 3 - Craze Cracks and Hot Cracks
- 1.27 Cracks in Steel Castings 4 - Stress and Riser Cracks
- 1.28 Cracks in Steel Castings 5 - Aluminum Nitride Rock Candy
- 1.29 Cracks in Steel Castings 6 - Heat Treat and Quench Cracks
- 1.30 Cracks in Steel Castings 7 - Hydrogen and Delayed Cracking
- 1.31 Test Uncertainty in Mechanical Testing of Steel Castings
- 1.32 Steel Casting Performance
- 1.33 Mold Metal Challenges
- 1.34 Mold Metal Challenges 2 - Sand Expansion
- 1.35 Mold Metal Challenges 3 - Interface Chemistry
- 1.36 Mold Metal Challenges 4 - Specialty Sands
- 1.37 Mold Metal Challenges 5 - Iron Oxide
- 1.38 Mold Metal Challenges 6 - Dimensions
- 1.39 Mold Metal Challenges 7 - Erosion
- 1.40 Mold Metal Challenges 8 - Penetration
- 1.41 Mold Metal Challenges 9 - Burn-in or Burn-on
- 1.42 Mold Metal Challenges 10 - Veining and Hot Tearing
- 1.43 Mold Metal Challenges 11 - Porosity
- 1.44 Mechanical Testing Introduction
- 1.45 Mechanical Testing - Test Blocks
- 1.46 Steel Casting Mechanical Testing Keel and Test Blocks Part 2
- 1.47 Steel Casting Mechanical Testing Keel and Test Blocks Part 3 - Temperature Gradients and Solidification
- 1.48 Steel Casting Mechanical Testing Keel and Test Blocks Part 4 - Non Keel-Block Test Blocks
- 1.49 Steel Casting Mechanical Testing Keel and Test Blocks Part 5 - Tensile Testing
- 1.50 Steel Casting Mechanical Testing Keel and Test Blocks Part 6 - Charpy V-Notch Testing
- 1.51 Steel Casting Mechanical Testing Keel and Test Blocks Part 7 - Fatigue and Creep
- 1.52 Steel Casting Mechanical Testing Part 8 - NDT and Performance
- 2 Segregation and Steel Castings
- 3 Heat Treatment
- 4 Corrosion
- 5 Making Steel Castings
- 5.1 Feeding & Risering Guidelines
- 5.2 Introduction
- 5.3 Simulation Limitations
- 5.4 Rigging Basics
- 5.5 Casting Engineering
- 5.6 Wlodawer Introduction
- 5.7 Solidification Shape and Dimension Effect
- 5.8 Modulus Hand Calculations
- 5.9 Modulus Example
- 5.10 Modulus Simulation
- 5.11 True Modulus Ratio
- 5.12 Riser Calculations
- 5.13 Thermal Gradient
- 5.14 Riser Neck
- 5.15 Riser Heads
- 5.16 Ring Risers
- 5.17 Riser Sleeves and Hot Topping
- 5.18 Thermal Gradient and End Effect
- 5.19 Necked-down Risers and Thin Sand Sections
- 5.20 Core Penetration and Sand Compaction
- 5.21 Riser Terms
- 5.22 Chills, Fins, Specialty Sands and Venting
- 5.23 Venting and Modeling
- 5.24 Internal Chills
- 5.25 Shrink
- 5.26 Conclusions
- 6 Miscellaneous
Corrosion 5 - Corrosion Testing Part 2
Posted February 2, 2022
Making Steel Castings
- The Making Steel Castings webinar series brings forward past concepts from Wlodawer’s “Directional Solidification of Steel Castings” (for eBook purchase: https://shop.elsevier.com/books/directional-solidification-of-steel-castings/wlodawer/978-0-08-010536-9) while linking to today’s simulation technology to provide a core understanding of the trade-offs that can be made in making steel castings.9
Feeding & Risering Guidelines
Feeding distance definitions, factors that influence feeding distance and calculations, and the physics of risers feeding solidification shrinkage. Also, “red book” rules on risering procedure, casting soundness, feeding distance and riser sizing to insure castings are fed to achieve the quality required and maximize yield; these concepts can be applied in simulations or directly to rigging a pattern.
41 minutes 56 seconds recorded on November 8 2024
Introduction
Introduction to the topic and panelists.
16 minutes 58 seconds recorded on February 6 2024
Simulation Limitations
Limitations of simulation and why it is important to look at a casting as a whole as all of the steel that goes into a mold (part cavity and rigging) will be affected by the directional solidification of the steel. This topic also stressed three other key items: the effects of variation, reality v. modeling (get out to the shop floor and get data), and “making steel castings” is much more beyond just rigging with many factors playing into the total cost of a casting.
40 minutes 8 seconds recorded on February 9 2024
Rigging Basics
Rigging basics – what is rigging, its history and terminology with focus on sand casting. This topic also discusses how rigging and mold features (vents, draft, risers) apply to and affect making good steel castings along with some founders’ tricks for doing things such as promoting feeding from a riser.
35 minutes 39 seconds recorded on March 4 2024
Casting Engineering
Casting engineering - who is it, what this is and what you need to know. This topic also reinforces the benefits of being out on the shop floor.
18 minutes 09 seconds recorded on March 4 2024
Wlodawer Introduction
29 minutes 45 seconds recorded on March 18 2024
Solidification Shape and Dimension Effect
25 minutes 08 seconds recorded on March 18 2024
Modulus Hand Calculations
13 minutes 08 seconds recorded on April 17 2024
Modulus Example
14 minutes 50 seconds recorded on March 18 2024
Modulus Simulation
17 minutes 12 seconds recorded on April 5 2024
True Modulus Ratio
12 minutes 49 seconds recorded on April 5 2024
Riser Calculations
20 minutes 57 seconds recorded on April 5 2024
Thermal Gradient
Considerations for holistic casting modulus, what is a thermal gradient in a steel casting and how it affects solidification, feeding range and what influences the range, tricks of the trade to manage thermal gradient, benefit to rough machining and formation of porosity.
40 minutes 58 seconds recorded on May 3 2024
Riser Neck
How the riser neck affects the feeding from the riser head, considerations for neck design and foundry engineering factors to consider beyond casting yield.
22 minutes 45 seconds recorded on May 17 2024
Riser Heads
Open v. blind risers, feeding volume v. distance, important of atmospheric pressure on feeding, venting, and tricks of the trade for risers on large castings.
55 minutes 03 seconds recorded on May 31 2024
Ring Risers
Description, applications and practice for utilizing ring risers
9 minutes 16 seconds recorded on June 14 2024
Riser Sleeves and Hot Topping
Benefits of sleeves, times to not use sleeves, percent feeding from riser, concerns of extensive riser piping, lower feed demand, and why insulating sleeves are not in Wlodawer
30 minutes 42 seconds recorded on June 14 2024
Thermal Gradient and End Effect
Taper/padding/wedge for directional solidification and feeding, rules of thumb for taper and how it relates to draft, taper can result in thermal channels exposed from machining causing NDT indications, use of shoulders/riser pads, trade-off between taper or feeder bosses versus additional risers, bolt-down cores, and use of chilling versus exothermic padding.
56 minutes 44 seconds recorded on June 28 2024
Necked-down Risers and Thin Sand Sections
Variety of terms for necked-down risers, function, benefits, application of thin sand sections to increase modulus without increasing metal thickness, heating pads and why they are not common, need for superheat and challenges with thin sand sections, and considerations for different feeding options
32 minutes 4 seconds recorded on July 26 2024
Core Penetration and Sand Compaction
9 minutes 27 seconds recorded on July 26 2024
Riser Terms
Riser terminology and practical comment on gating
4 minutes 33 seconds recorded on July 26 2024
Chills, Fins, Specialty Sands and Venting
52 minutes 21 seconds recorded on August 2 2024
Venting and Modeling
55 minutes 18 seconds
Internal Chills
42 minutes 2 seconds
Shrink
22 minutes 17 seconds
Conclusions
30 minutes 6 seconds
Miscellaneous
Basics of Export Compliance - ITAR and EAR
54 minutes 5 seconds recorded on April 25 2018
