Die casting machine dedicated mold temperature machine, oil circulation heater

Die casting machine dedicated mold temperature machine, oil circulation heater

When choosing a mold temperature control machine for die-casting machines, it is necessary to comprehensively consider the characteristics of the mold, production process requirements, and equipment performance. The following are key considerations:

1. Temperature range and process matching

Maximum temperature requirement: Die casting molds usually require higher temperatures (such as 200-300 ℃ for aluminum alloys and 300-400 ℃ for magnesium alloys), and it is necessary to ensure that the maximum temperature of the mold temperature machine covers the process requirements.

Heating speed: For rapid heating needs (such as cold mold start-up), a mold temperature machine with a high-power heating system should be selected.

Temperature control accuracy: High precision control within ± 1 ℃ can reduce defects such as product shrinkage and porosity.

2. Heating and cooling capacity

Heating power: Calculate the required power based on the mold volume and material heat capacity to avoid slow heating caused by insufficient power.

Cooling efficiency:

Water cooled mold temperature machine: suitable for medium and low temperatures (≤ 180 ℃), fast cooling but requires anti scaling.

Oil temperature machine: suitable for high temperatures (≤ 350 ℃), but requires regular replacement of heat transfer oil.

Dual circuit design: Some mold temperature machines can heat and cool simultaneously to cope with temperature fluctuations during the die-casting cycle.

3. Flow and pressure adaptability

Circulating flow rate (L/min): Ensure that the thermal conductive medium can evenly cover the mold flow channel, and higher flow rates are required for complex molds.

Pump pressure capacity: High pressure pumps (such as ≥ 4 bar) can cope with the resistance of mold flow channels and avoid local temperature differences caused by insufficient flow.

Pipeline design: Match mold interface size to reduce pressure drop and heat loss.

4. Mold characteristics and temperature control methods

Mold material: High thermal conductivity materials (such as beryllium copper) require higher cooling capacity, while steel molds require greater heating power.

Mold structure:

Partition temperature control: Multiple chambers or large molds require independent control of different areas by multiple loop mold temperature machines.

Flexible cooling channel: Complex channels require higher flow and pressure support.

Heat balance calculation: Select the mold temperature machine capacity based on the mold heat load (kW) to avoid overloading operation.

5. Energy consumption and operating costs

Energy efficiency ratio: Choose energy-saving technologies such as variable frequency pumps and waste heat recovery to reduce long-term energy consumption.

Medium cost: Water cooling has low cost but is prone to scaling; The oil temperature machine requires regular replacement of heat transfer oil, which incurs high maintenance costs.

6. Safety and reliability

Multiple protections: over temperature protection, liquid shortage alarm, pressure sensor, explosion-proof valve, etc.

Stability: Industrial grade components such as SSR solid-state relays and stainless steel pipelines enhance equipment durability.

7. Convenience of operation and maintenance

Automation control: PLC+touch screen interface, supporting temperature curve programming, fault recording and other functions.

Convenience of maintenance: open pipeline design, quick drain valve, and easily removable filter structure.

8. Scalability and compatibility

Multi machine parallel connection: In the future, it can support the collaborative work of multiple mold temperature machines when expanding production.

Compatible media: Supports water, oil, and special fluids (such as ethylene glycol solution) to meet different process requirements.

9. Brand and Service

Technical support: Does the supplier provide professional services such as thermal calculation and selection guidance.

After sales response: spare parts supply, timely maintenance, to avoid production stoppage due to equipment failure.

Suggestions for actual selection steps

Clear process parameters: die-casting material, mold size, target temperature, production cycle time.

Calculate heat load: Determine the power of the mold temperature machine based on the heat dissipation and heating/cooling time of the mold.

Matching device performance: Select models with sufficient margin (recommended redundancy of 20%) in flow rate, pressure, and temperature range.

Verification case: Refer to successful application examples of the same type of die-casting production line.

By systematically evaluating the above factors, quality problems such as flash, sticking, and shrinkage caused by improper selection of mold temperature machines can be avoided, while improving production efficiency and equipment service life. Suggest collaborating with mold temperature machine suppliers and mold designers to complete selection analysis.