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Maintenance Alert – Bakelite, Louisville Plant

Production will pause for annual maintenance Sept 8–15, 2025. We can still ship pre‑produced packaged materials, but to receive anything scheduled to ship Sept 8–19, please place your order by Aug 8, 2025. Standard lead times apply to shipments before Sept 5.

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Foundry Adhesives: Types, Benefits, and Curing Method

What Are Foundry Adhesives?

Foundry adhesives are specialized bonding agents used to assemble and reinforce core packages in metalcasting processes. At HA International (HAI), we offer a complete line of adhesives formulated for cold cure, hot cure, and microwave cure applications.

Most of our adhesives are designed for cold and microwave curing, using sodium silicate (water glass) bases and inorganic fillers. This formulation ensures minimal gas evolution, making them ideal for critical, high-integrity core assemblies.

Why Are Low-Gas Foundry Adhesives Important?

Low gas-emitting adhesives are essential in foundry operations because they:

  • Maintain bond stability under elevated temperatures

  • Prevent defects caused by gas pressure during metalcasting

  • Enhance the overall quality of complex or multi-core packages

What Curing Methods Are Available for Foundry Adhesives?

HAI supports multiple adhesive curing options to meet the demands of diverse core-making environments:

  • Cold Cure Adhesives: Air-curing formulas that can be heat-accelerated

  • Microwave Cure Adhesives: Rapid-curing systems compatible with microwave processing

  • Hot Cure Adhesives: Thermally activated adhesives used in oven or hot-box applications

What Types of Foundry Adhesives Does HA International Offer?

We provide a broad range of adhesive technologies tailored to molding and core-making needs:

Hot-Melt Adhesive

  • Polysaccharide-based

  • Cures via oven drying

  • Compatible with Hot-Box and Cold-Box systems

Cold-Melt Adhesive

  • Sodium silicate-based with varying viscosities

  • Air-curing (accelerates with heat)

  • Highly versatile across core assembly applications

Shell Adhesive

  • Thermosetting resin for hot curing

  • Designed for Hot-Box processes

Fast-Cure Adhesive

  • Quick-drying with low-VOC solvents

  • Ideal for fast-paced core assembly lines

What is Klebepaste

SB?

Klebepaste SB is a sodium-silicate adhesive for foundry use, delivered in a flexible squeeze tube. It offers performance comparable to our Coreweld NB Standard with cleaner, more controlled application and reduced waste. 

How do I apply Klebepaste SB?

  1. Cut the nozzle to the bead size you need.
  2. Prepare clean, dry surfaces.
  3. Apply a thin, continuous bead; join parts with light pressure.
  4. Allow to set per the product instructions/technical data sheet (TDS).

 

How is Klebepaste SB different from Coreweld NB Standard?

  • Same chemistry class/performance intent.

  • Packaging: Klebepaste SB comes in flexible squeeze tubes for better control.

  • Waste reduction: Tube format helps empty nearly all material vs. rigid bottles.

How is Klebepaste SB different from Coreweld NB Standard?

  • Same chemistry class/performance intent.

  • Packaging: Klebepaste SB comes in flexible squeeze tubes for better control.

  • Waste reduction: Tube format helps empty nearly all material vs. rigid bottles.

How do I apply Klebepaste SB?

  1. Cut the nozzle to the bead size you need.
  2. Prepare clean, dry surfaces.
  3. Apply a thin, continuous bead; join parts with light pressure.
  4. Allow to set per the product instructions/technical data sheet (TDS).

FAQ's

What substrates is it for?
For typical foundry bonding/repair tasks, check the TDS for specific compatibility.

Does the tube reduce waste?
Yes, flexible tubes help dispense nearly all the product, unlike rigid bottles.

Is performance different from Coreweld NB Standard?
Performance is comparable; the main difference is the tube packaging for control and waste reduction.

How do I control bead size?
Trim the nozzle tip to the opening you need.

How should I store it?
Store sealed, upright, and away from extreme temperatures. See SDS/TDS for details.

Is there technical support?
Yes—our Technical Service team can help with application questions and best practices.

Download Brochure Here!

 Your contact

 

 

 

Daniel Cygal

Product Manager Auxiliaries

Daniel.Cygal@HA-Group.com

Daniel Cygal