Nobake Molding & Coremaking 201

Learning Outcomes

  • Summarize the advantages and disadvantages of various types of sand used in the nobake process.
  • Identify the equipment and processes used to handle and reclaim sand.
  • Describe common equipment challenges present in the nobake molding process.
  • Describe the basic sand additives, refractory coatings, adhesives, and release agents used in the nobake process.
  • Compare the variables of common sand binder systems.
  • Recognize ways to determine the best sand and binder for the mold application.
  • Follow the process for using mold-making tools and components.
  • Identify effective work and strip times for common sand binder systems.
  • Recognize raw material and equipment problems and their effect on process variables.
  • Use quality control check data to evaluate molds for defects and determine corrective action

Course Introduction

This second course in the nobake series provides participants with the next level of knowledge related to the nobake molding and coremaking processes. Students will have a chance for hands-on practice during class. 

Discussion on the first day will include advanced foundry terminology, an introduction to specialty sands, sand variables and sand additives, as well as an in-depth discussion of the types of chemical binders used to make nobake molds and cores. There will be a focus on sand equipment, sand handling and storage, as well as reclamation and re-use, with the day culminating in how to determine the correct sand and binder for the application. 

Day two will focus on the mold and coremaking processes–how to use more complex tools and components, the use of refractory coatings, adhesives, and release agents, how to evaluate problem areas with raw materials, binders and equipment, and how to make adjustments to ensure a quality mold. Participants will finish the day with discussion about quality control tools and checks and have an opportunity to present their own problems to the class for discussion.

Benefits to Taking the Course

Benefits to taking this course include obtaining a higher level of knowledge about sand molding and coremaking processes used in established foundries. The course provides a more detailed level of information about various types of sand and binders, their handling and usage, and how they work together. This course also provides an opportunity for hands-on practice using sand equipment and gives participants time to walk through the decision-making process for evaluating quality assurance issues related to sand and raw materials, equipment and binders.

Module 1: Introduction

Module 2: Nobake Molding Process and Metalcasting Terminology

  • Nobake Molding and Coremaking Process Story
  • New Vocabulary Terms
  • PPE Review

Module 3: Sand and Binder Systems

  • Sand Origins and Variables
  • Specialty Sands
  • Sand Storage, Handling, and Mixing
  • Sand Reclamation and Reuse
  • Sand Additives
  • Binder Systems
  • Determining the Correct Sand and Binder for the Application

Module 4: Making a Nobake Mold

  • Mold Making Tools and System Components
  • Avoiding Injuries
  • Adhesives, Release Agents, and Refractory Coatings
  • Adjusting Work and Strip Time
  • Mold and Core Stripping
  • Venting of Nobake Sand Molds and Cores
  • Clean-Up

Module 5: Quality Control

  • Understanding Process Variables
  • Quality Assurance Problem Areas
  • Quality Control Tools, Data, and Action
  • Quality Assurance Open Discussion

Module 6: Conclusion

 

 

What our students are saying......

"Great class! I wish all of our molders could take it. I enjoyed learning what I needed." 
"I am looking forward to the coldbox course!"
"Very well run. Very informative." 
"It is good when you get a chance to hear from people in the business dealing with the same issues as you, and the networking is an awesome tool." 
"Very good learning experience. Great course; highly recommendable."