Cold Jet has greatly increased our efficiency with core box cleaning.

Dry Ice Blasting Equipment for Foundries and Metal Casting
Clean Core Boxes, Permanent Molds, and Die Cast Tooling Faster Without Damage
Eliminate Tooling Damage and Maximize Uptime with In-Place Dry Ice Blasting
Cold Jet’s dry ice blasting machines deliver superior cleaning results for foundries, die casting facilities, and metal casting operations. By replacing abrasive sand blasting, labor-intensive manual scrubbing, and harsh chemical solvents with a non-abrasive, moisture-free solution, operators achieve the following results:
- Significantly Faster Cleaning: Clean complex permanent mold geometries, core boxes, and die cast tooling in a fraction of the time required for manual wire brushing.
- Hot & In-Place Cleaning: Eliminate cooling cycles and mold or die removal. Clean your production assets while they are still on the casting line and at operating temperature.
- Extended Asset Life: Safely clean permanent molds, aluminum tooling, and precision core boxes without damaging vents or rounding critical parting lines.
- Reduced Scrap Rates: Effectively remove refractory coatings and resins to ensure a superior as-cast finish and consistent part quality.
- Zero Secondary Waste: Dry ice sublimates on contact—leaving no grit, no chemicals, and no hazardous waste disposal costs.
Ready to extend asset life and reduce production downtime? Contact us today to learn how Cold Jet dry ice blasting machines can eliminate tool damage, improve part quality, and keep your foundry operating at peak efficiency.
What are the Benefits of Dry Ice Blasting for Foundries?
Maximize tooling life and casting quality while minimizing production downtime
Cold Jet dry ice blasting is a non-abrasive, non-conductive process that effectively removes refractory coatings, sand residue, release agents, and carbon deposits. Because dry ice sublimates on contact, it produces no secondary waste and leaves no moisture, preventing flash rust on assets and allowing operators to clean precision geometries faster and more economically than traditional methods.
By replacing abrasive sand blasting, manual scrubbing, and harsh chemicals with Cold Jet dry ice blasting, foundry operators achieve:
-
Drastic Reduction in Cleaning Time and Downtime
Operators can clean permanent molds, core boxes, and die cast tooling in a fraction of the time, directly increasing operational capacity and improving equipment reliability across the casting line. With dry ice blasting, foundries report time reductions ranging from 40-90% depending on application—with core boxes seeing the highest improvements at 85-90%, permanent molds at 50-85%, and general equipment cleaning at 40-70%.
-
Preservation of Tooling Integrity
Unlike sand blasting or wire brushing that progressively rounds parting lines, damages delicate vents/screens, and degrades surface finish, dry ice cleaning removes contamination without physical wear. This preserves the dimensional accuracy of expensive dies and molds, extending the productive life of your most critical assets.
-
In-Place Cleaning
Clean permanent molds, die cast tooling, and forging dies while they are still hot and mounted on production equipment. This eliminates cooldown periods, disassembly labor, and the alignment issues that frequently occur when heavy tooling is removed and replaced.
-
Improved Part Quality and Reduced Scrap Rates
By completely removing refractory coating irregularities and sand binder residue, Cold Jet dry ice cleaning eliminates the root causes of surface defects. Foundries report a superior as-cast finish, tighter dimensional tolerances, and significantly lower scrap rates when molds and dies are properly maintained.
-
No Secondary Waste or Disposal Costs
Dry ice sublimates into gas upon impact—no water, harsh chemicals, or abrasive grit are left behind. This eliminates the need to collect and dispose of contaminated media and prevents moisture issues that cause flash rust on steel die surfaces and cast-iron molds.
-
Enhanced Worker Safety
Dry ice blasting eliminates chemical solvent exposure, reduces silica dust inhalation, and removes the ergonomic strain associated with hours of manual wire brushing.
Dry Ice Blasting Applications for Metal Casting and Foundries
Cold Jet dry ice blasting equipment provides cleaning and maintenance solutions for three primary applications:
-
Permanent Mold Casting
-
Core Boxes
-
Die Cast Tooling and General Equipment
Permanent Mold Casting Cleaning
Extend Asset Life and Improve Quality with Non-Abrasive Cleaning
Sand blasting and wire brushing progressively erode expensive tooling with every cleaning cycle. This cumulative damage rounds critical parting lines, degrades surface finishes, and forces premature mold retirement. Dry ice blasting eliminates this cycle by removing contaminants without physical substrate wear, allowing operators to clean molds while still mounted and at operating temperature.
Surface integrity is critical for gravity-fed and low-pressure molds where even microscopic changes affect metal flow and part release. Dry ice safely removes refractory coatings, graphite lubricants, and carbonized release agents from complex parting lines and internal cooling channels without abrasive wear. A major automotive foundry extended mold service life by 40% after switching to dry ice cleaning, significantly reducing annual tooling replacement costs.
-
Dry ice blasting cleaning mold for brake components
-
Removing refractory coating from permanent mold
-
Dry ice blasting cleaning aluminum permanent mold
Dry ice blasting cleans the following equipment in permanent mold casting operations:
-
Permanent Aluminum Molds
-
Metal Bonded Molds
-
Gravity Molds
-
Tilt Pour Molds
-
Low-Pressure Permanent Molds
Core Box Maintenance and Cleaning
Reduce Cleaning Cycles by up to 86% While Protecting Precision Tolerances
Core box cleaning is often a maintenance bottleneck, forcing foundries to rely on manual scraping or costly outside service providers. Cold Jet dry ice cleaning reaches into complex geometries and removes hardened resins and sand binders in minutes rather than hours. By cleaning in-house and in-place, foundries reduce backup tooling inventory and eliminate weeks of lead time.
-
Cold Box and Shell Core Box Cleaning
Efficiently remove resins, binders, and release agents from cold box and shell core equipment. One foundry reported reducing a 6-hour manual cleaning cycle to less than one hour with dry ice blasting—without the abrasive wear that degrades the precision surfaces required for dimensional accuracy. This ensures that every core produced meets strict as-designed specifications.
-
Precision Vent and Screen Cleaning
Dry ice blasting restores optimal airflow by clearing clogged slot and screen vents—the primary cause of gas porosity and casting defects—without the abrasive damage caused by manual scrubbing. Dry ice cleaning lifts hardened resins while preserving the sharp edges of vents. This prevents vent flash, ensures consistent gas evacuation, and lowers scrap rates by maintaining the integrity of the exhaust system.
-
Core Room Equipment and Tooling
Extend the life of oven systems, handling fixtures, and equipment in the core room. Dry ice’s non-conductive properties allow for the safe cleaning of sensors without risking electrical failure. This comprehensive approach minimizes unplanned downtime across the entire core room.
-
Core box cleaning with dry ice blasting
-
Cleaning of a multi-cavity core box with dry ice blasting
-
Dry ice blasting cleaning core box online
Dry ice blasting cleans the following equipment in core box operations:
-
Cold Boxes
-
Shell Core Boxes
-
Dump Core Boxes
-
Split Core Boxes
-
Strickle Core Boxes
-
Loose Piece Core Boxes
-
Gang Core Boxes
-
Half Core Boxes
-
Core Oven Systems
Die Cast Tooling and General Equipment Cleaning
Clean Tooling In-Situ and Eliminate Secondary Waste from Production Lines
Die casting operations face a critical challenge: contamination degrades part quality, but taking equipment offline kills production throughput. Cold Jet dry ice blasting solves this by cleaning hot tooling without abrasive damage, chemicals, or production shutdown.
Remove oxides and heavy die lubricant buildup while tooling is still at operating temperature, eliminating hours wasted on cooldown and disassembly. Whether managing semi-solid casting, squeeze casting, or high-pressure die casting (HPDC), dry ice ensures superior surface preparation between runs without rounding precision parting lines. One facility eliminated two hours of downtime per die change, enabling immediate return to production.
-
Removing die lube from magnesium die cast with dry ice blasting
-
Dry ice blasting cleaning die cast tooling
-
Dry ice blasting cleaning high-pressure die casting
Dry ice blasting cleans the following equipment in die cast and general foundry operations:
-
Semi-Solid Casting Tooling
-
Squeeze Casting Tooling
-
Forging Dies
-
Die Cast Dies
-
Coating Equipment
What Do Foundries Need for Dry Ice Cleaning?
A dry ice cleaning configuration for foundry operations relies on several key parts:
-
Dry Ice Blaster
Cold Jet dry ice blasters are built to withstand the tough environments in metal casting facilities. These versatile machines handle everything from delicate core box vent cleaning to aggressive refractory coating removal. Every unit arrives equipped with hoses, an applicator, and nozzles.
-
Compressed Air
Most foundries have existing filtered air systems that can supply the required compressed air for dry ice blasting operations. For locations without plant air, portable diesel air compressors can provide the necessary compressed air supply.
-
Dry Ice Supply
A reliable supply of dry ice is essential for consistent cleaning operations. We can help you identify a dry ice supplier and recommend the amount you should order based on your cleaning requirements and production schedule. Once identified, establish a delivery schedule that aligns with your maintenance and operational needs.
-
Machine and Operator Training
Proper training is essential to ensure your team can effectively and safely use dry ice cleaning equipment for foundry applications. Cold Jet provides comprehensive training that equips operators with the necessary techniques and safety guidelines for optimal cleaning practices.
-
Personal Protective Equipment (PPE)
Always ensure your cleaning team wears the correct safety gear, including gloves, hearing protection, and eye protection while operating your dry ice blaster.
What Is the Best Dry Ice Blaster for Foundries?
Foundry operators choose from Cold Jet’s full lineup of dry ice blasters to match their specific cleaning needs. Popular systems for metal casting and foundry operations include:
-
Aero 40FP
The Aero 40FP provides the high-impact power necessary to tackle stubborn refractory coatings, heavy carbon buildup, and thick scale on die cast tooling and permanent molds. Its advanced air system ensures consistently powerful, pulse-free flow. This unit is ideal for aggressive cleaning and large-scale production equipment maintenance.
Aero® 40FP -
Aero2 PLT ULTRA
The PLT ULTRA delivers high-output performance in a maneuverable design, engineered for the rapid maintenance of tooling and casting lines. It provides fast, effective removal of release agents and refractory coatings without compromising precision surfaces or venting systems. This system is optimized for high-volume facilities requiring maximum turnaround speed for their most critical production assets.
Aero2 PLT® ULTRA -
Aero2 PCS ULTRA
The PCS ULTRA is a highly versatile solution for the full spectrum of foundry assets. This mobile blaster transitions seamlessly from the precision cleaning of delicate core box vents and screens to the removal of heavy binder residue and sand buildup. Its precision control allows operators to calibrate parameters for each specific application, making it the ideal all-in-one machine for facilities managing diverse tooling.
Aero2 PCS® ULTRA
Why Choose Cold Jet Machines for Foundry Cleaning?
Foundry operations demand equipment built to handle harsh conditions day after day. Cold Jet machines deliver the durability, reliability, and performance foundries need—with faster ROI than competitor systems.
-
Trusted Foundry Expertise
With decades of experience in metal casting operations, Cold Jet has worked with leading foundries worldwide to solve their most demanding maintenance challenges. With over 24,000 dry ice cleaning machines installed globally at foundries and die casting facilities, Cold Jet is the proven, trusted solution.
-
Industry Leading Reliability
Our machines are engineered to thrive in demanding foundry environments. Cold Jet dry ice blasters offer unmatched reliability and significantly longer lifespan than competitor models, handling daily use across multiple shifts in harsh, high-temperature conditions.
-
Lower Operating Costs
Cold Jet equipment uses significantly less dry ice, compressed air, and electricity than competitor machines, directly reducing your daily operating costs without compromising cleaning quality or safety.
-
Unmatched Support and Training
Our regional technicians provide expert maintenance services and comprehensive equipment training to ensure your team’s success. We understand foundry operations and deliver application-specific guidance for your cleaning challenges.
-
Application Specific Accessories
Cold Jet offers a wide array of nozzles, applicators, and blast hoses to optimize your cleaning setup. Our team helps you select the right configuration for your needs.
OUR CUSTOMERS & WHAT THEY SAY ABOUT US
Foundries around the world rely on Cold Jet
With over 24,000 machines installed globally, Cold Jet delivers reliable dry ice cleaning solutions for metal casting operations.
Frequently Asked Questions
WE ARE HERE TO HELP.
Interested but don’t know where to start?
Contact us today to learn more about our solutions and see how they can meet your unique needs.

