Looking for precise, uniform temperature control above water-based limits? Our High Temperature Mold Heat Transfer Systems provide stable heating and cooling up to 350°C, backed by customized flow rates, closed-loop PID control, and heavy-duty safety protections. Designed to meet global manufacturing standards (CE / ISO 9001 compliance available), these systems ensure maximum thermal stability for critical process equipment.

How the System Works

Heating: Electric heating elements bring the thermal oil to the precise target setpoint.

Circulation: High-temperature pumps deliver continuous flow through the process circuit.

Heat Transfer: Heat passes directly through mold channels, roller passages, or reactor jackets.

Return: Thermal oil returns to the unit, where sensors monitor temperature drop across the circuit.

Regulation: Closed-loop PID controllers adjust heating or cooling output dynamically.

Cooling: Integrated heat exchangers extract heat when process cooling or rapid ramp-down is needed.

System Selection by Temperature Range

Operating Requirement	Typical System Configuration	Target Applications
Up to 200°C	Standard Thermal Oil System	Injection molding, rollers, general process heating
Up to 300°C	High-Temperature Oil System	High-temp plastics (PEEK/PPS), rubber, composites
Up to 350°C	Ultra-High Temperature System	Advanced composites, specialized chemical reactors, high-temp tooling

Technical Specifications Table

Parameter / Feature	Standard Range / Specification	Selection Notes
Operating Temperature	Up to 200°C / 300°C / 350°C	Based on synthetic thermal oil limits
Heating Capacity	6 kW to 96 kW+	Matched to required ramp-up time
Pump Motor Power	0.5 HP to 10 HP+	Configured to circuit pressure resistance
Maximum Pump Flow	Up to 220 L/min+	Ensures turbulent heat transfer flow
Maximum Pump Pressure	Up to 4.5 kg/cm²	High-pressure pumps available upon request
Temperature Control	PID Microprocessor / PLC Touch Screen	Digital dual-display for supply and return
Piping Material	High-Grade Stainless Steel	Prevents thermal corrosion and fluid leak
Safety Protections	Over-temp, low level, pump overload, phase loss	Complete multi-layer system interlocks
Electrical Supply	380V-480V / 3 Phase / 50Hz or 60Hz	Fully configurable to local site power
Standards Compliance	CE / ISO 9001	Full factory compliance testing

Temperature Stability During Production

Maintaining process thermal equilibrium requires continuous monitoring of both supply and return conditions.
Monitoring Points:
Supply temperature to process
Return temperature from process
Supply-to-return temperature differential (Delta-T)
System circulation pressure and oil level
Heater and cooling circuit status
A widening Delta-T between supply and return indicates insufficient flow, inadequate pump pressure, or an increased process heat load that requires immediate adjustment.

Comprehensive Safety Protection

High-temperature systems feature multi-layer safety interlocks to protect operators, equipment, and production continuity:
Over-temperature safety limiters
Low oil level detection and alarms
Pump overload and dry-run protection
Circuit over-pressure monitoring
Phase-loss and reverse-phase electrical protection
Automatic system venting/exhaust functions
Automatic cool-down sequence prior to shutdown
Emergency stop integration

Key Applications & Industry Examples

High-Temperature Injection Molding: Eliminates surface defects, flow lines, and internal stress in high-performance polymers (PEEK, PPS, LCP, PSU).

Rubber Processing: Precise temperature control for compression mold platens, extruders, and vulcanization presses.

Composite Manufacturing: Dynamic ramp and soak thermal control for carbon fiber and resin transfer molding (RTM).

Heated Rollers: Continuous fluid circulation through internal channels for laminating, calendering, and printing rollers.

Chemical & Process Vessels: Jacket heating for industrial reactors, mixing tanks, and pilot plants.

OEM and Custom Engineering

Standard models can be tailored to meet exact OEM process machinery integration requirements:
Customized footprint and spatial dimensions
Multi-zone independent temperature control
Custom voltage/frequency combinations
Fieldbus/PLC communication protocols (Modbus, Profinet, Ethernet/IP)
High-pressure or high-flow non-standard pump integration

Quality Assurance & Factory Testing

Every system undergoes rigorous functional inspection before dispatch:

Piping Integrity: Pressure testing and leak checks on all stainless steel joints.

Electrical Safety: Insulation resistance, ground continuity, and component overload verification.

Thermal Performance: Full-load heating, cooling, and PID stability testing.

Safety Systems: Verification of over-temp trips, low-level cutoffs, and emergency shutdowns.

Buyer Procurement Checklist

Evaluation Point	What to Ask the Manufacturer
Temperature Rating	Is the rated temperature for continuous duty or short-term max?
Thermal Fluid	What oil viscosity and synthetic thermal fluid specification is recommended?
Pump Curve	Does the pump pressure curve match our mold circuit resistance?
Cooling Circuit	What water supply temperature and pressure are required for the cooling stage?
Documentation	Are full wiring schematics, user manuals, and CE/ISO certificates provided?
Spare Parts	Which high-wear components (seals, heaters) are recommended as spares?

FAQ

Q: What is the main difference between a mold temperature controller and a thermal heat transfer system?

A: A mold temperature controller refers to the core heating/cooling power unit. A complete heat transfer system represents the entire thermal loop, including the controller, thermal oil, interconnecting piping, process mold channels, temperature sensors, and safety infrastructure.

Q: Can thermal oil systems operate safely at continuous temperatures up to 300°C or 350°C?

A: Yes. High-temperature oil systems are custom-engineered for continuous elevated operations using specialized synthetic thermal fluids, high-temp mechanical pump seals, expansion tanks, stainless steel fluid piping, and dynamic safety cutoffs.

Q: How do I choose between a Thermal Oil System and a Pressurized Water System?

A: Thermal oil is recommended for continuous operating temperatures above 180°C because it operates safely under low system pressure. Pressurized water offers superior heat capacity but requires high internal pressure and continuous water treatment to prevent boiling and scaling at high temperatures.

Q: How can you size the circulation pump if my mold pressure loss is unknown?

A: If pressure loss is unknown, our engineering team can calculate the required pump flow and pressure curves using your mold drawings, internal channel diameters, hose lengths, and connection dimensions.

Q: Can these units be customized for specific OEM machinery or international power grids?

A: Yes. We offer OEM customization including tailored physical dimensions, multi-zone control, integrated PLC communication protocols (Modbus, Profinet), and localized electrical specifications (e.g., 380V/50Hz, 480V/60Hz).

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