Metal Finishing
Metal finishing refers to a broad range of industrial processes that alter the metallic surface of a manufactured item to achieve a certain characteristic, such as improved chemical resistance or electrical conductivity. These processes are highly common in the automotive, electronics, telecommunications, heavy machinery and aerospace industries.
Metal finishing is essential to extend the lifespan of many products, which would otherwise be damaged by corrosion, leading to a high turnover of many industrial and household equipment. This would negatively impact the economy and the environment.
Application
A superior high performance energy efficient heat transfer fluid suitable for use in all kinds of industrial processes.
About Globaltherm® M
Made from highly refined base stocks, Globaltherm® M thermal fluid has excellent thermal and oxidation stability allowing operation at high temperatures for extended periods.
The fluid also has efficient thermal conductivity and low viscosity, at the relevant operating temperatures, ensure high heat transfer rates requiring limited pumping energy.
Globaltherm® M heat transfer fluid provides:
low vapour pressures at elevated temperatures
greatly reduced evaporation
vapour lock and cavitation eliminating the need for high pressure piping and equipment
Used fluid may be disposed of through a number of environmentally acceptable methods such as used oil recycling or heavy fuels burning.
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| Parameter | Unit | Code (ASTM / ISO) | Result |
|---|---|---|---|
| Operating Range | °C (°F) | N/A | -10 to 320 (14 to 608) |
| Appearance | N/A | N/A | Viscous clear-yellow liquid with a mild odour. |
| Density @ 25°C | kg/m³ | ASTM D4052 | 873 |
| Kin. Viscosity 40°C | mm²/s (cSt) | ASTM D445 | 29.8 |
| Kin. Viscosity 100°C | mm²/s (cSt) | ASTM D445 | 4.5 |
| Flash Point PMC | °C | ASTM D93 | 210 |
| Flash Point COC | °C | ASTM D92 | 230 |
| Coefficient of Thermal Expansion | °C | NTR | 0.00077/°C |
| Autoignition Point | °C | ASTM E659 | 360 |
| Pour Point | °C | ISO 3016 | -12 |
| Neutralisation Nr (acid), TAN | mgKOH/g | ASTM D974 | <0.05 |
| Maximum Bulk Temperature | °C | NTR | 320 |
| Maximum Film Temperature | °C | NTR | 340 |
| Boiling Point at 1013 mbar | °C | NTR | 365 |
| Average Molecular Weight | NTR | NTR | 400 |
| Moisture Content | PPM | ASTM D6304 | <100 |
| Parameter | Unit | Code (ASTM / ISO) | Result |
|---|---|---|---|
| Operating Range | °C (°F) | N/A | -10 to 320 (14 to 608) |
| Appearance | N/A | N/A | Viscous clear-yellow liquid with a mild odour. |
| Density @ 25°C | kg/m³ | ASTM D4052 | 873 |
| Kin. Viscosity 40°C | mm²/s (cSt) | ASTM D445 | 29.8 |
| Kin. Viscosity 100°C | mm²/s (cSt) | ASTM D445 | 4.5 |
| Flash Point PMC | °C | ASTM D93 | 210 |
| Flash Point COC | °C | ASTM D92 | 230 |
| Coefficient of Thermal Expansion | °C | NTR | 0.00077/°C |
| Autoignition Point | °C | ASTM E659 | 360 |
| Pour Point | °C | ISO 3016 | -12 |
| Neutralisation Nr (acid), TAN | mgKOH/g | ASTM D974 | <0.05 |
| Maximum Bulk Temperature | °C | NTR | 320 |
| Maximum Film Temperature | °C | NTR | 340 |
| Boiling Point at 1013 mbar | °C | NTR | 365 |
| Average Molecular Weight | NTR | NTR | 400 |
| Moisture Content | PPM | ASTM D6304 | <100 |
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| Product | 208 Litre barrel | Bulk | 25 Litre | 1050 Litre IBC |
| Globaltherm® M (-10°C – 320°C) |
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|
|
Contact us for more information on high temperature thermal oils
We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.
Call us on +44 (0)1785 760555 for more information
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Using Globaltherm® MXT
- Globaltherm® MXT Heat transfer oil contains a highly resilient blend of additives resistant to sludging and ensures long-lasting and trouble-free service when managed correctly
- This heat transfer oil is a mineral based liquid phase heat transfer oil used for operating at bulk temperatures between -7°C and 320°C in both open and closed circulation.
- Globaltherm® MXT heat transfer oil is resistant to the oxidation and thermal cracking found in many industrial processing environments, including; chemical, pharmaceutical, plastics, paper, wood and textiles.
- Globaltherm® MXT Heat transfer oil is non-toxic and non-corrosive.
- This Heat transfer oil is suitable for a range of indirect open and closed liquid phase industrial heat transfer systems.
- Used oil may be disposed of through a number of environmentally acceptable methods such as used oil recycling or heavy fuels burning.
Talk to us about our all-inclusive reprocessing services.
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| Parameter | Unit | Code (ASTM / ISO) | Result |
|---|---|---|---|
| Appearance | N/A | N/A | Clear, yellow oil |
| Operating Range | °C (°F) | N/A | -7°C - 320°C (19°F - 620°F) |
| Density @15°C | g/cm¯³ | ASTM D 7042 | 0.879 |
| Kin. Viscosity 40 | mm²/s¯¹ (cSt) | ASTM D 7042 | 34.7 |
| Kin. Viscosity 100°C | mm²/s¯¹ (cSt) | ASTM D 7042 | 5.6 |
| Open Flash Point | °C | ASTM D92 | 230 |
| Closed Flash Point | °C | ASTM D92 | 204 |
| Fire Point | °C | ASTM D92 | 244 |
| Coefficient of Thermal Expansion | °C | NTR | 0.1011% |
| Autoignition point | °C | ASTM E659-78 | 393 |
| Pour Point | °C | ASTM D97 | -9 |
| Maximum Bulk Temperature | °C | NTR | 320 |
| Maximum Film Temperature | °C | NTR | 360 |
| Boiling Point | °C | NTR | >343 |
| Average Molecular Weight | NTR | NTR | 399 |
| Moisture Content | PPM | ASTM D6304 | Not Determined |
| Parameter | Unit | Code (ASTM / ISO) | Result |
|---|---|---|---|
| Appearance | N/A | N/A | Clear, yellow oil |
| Operating Range | °C (°F) | N/A | -7°C - 320°C (19°F - 620°F) |
| Density @15°C | g/cm¯³ | ASTM D 7042 | 0.879 |
| Kin. Viscosity 40 | mm²/s¯¹ (cSt) | ASTM D 7042 | 34.7 |
| Kin. Viscosity 100°C | mm²/s¯¹ (cSt) | ASTM D 7042 | 5.6 |
| Open Flash Point | °C | ASTM D92 | 230 |
| Closed Flash Point | °C | ASTM D92 | 204 |
| Fire Point | °C | ASTM D92 | 244 |
| Coefficient of Thermal Expansion | °C | NTR | 0.1011% |
| Autoignition point | °C | ASTM E659-78 | 393 |
| Pour Point | °C | ASTM D97 | -9 |
| Maximum Bulk Temperature | °C | NTR | 320 |
| Maximum Film Temperature | °C | NTR | 360 |
| Boiling Point | °C | NTR | >343 |
| Average Molecular Weight | NTR | NTR | 399 |
| Moisture Content | PPM | ASTM D6304 | Not Determined |
Scroll for more details
| Product | 208 Litre barrel | 25 Litre | 1050 Litre IBC |
| Globaltherm® MXT (-7°C – 320°C) |
|
|
|
Contact us for more information on high temperature thermal oils
We provide advice on how to choose the most appropriate oil for your heat transfer applications and provide our customers with continued technical support.
Call us on +44 (0)1785 760555 for more information
Thermal fluids are essential to reach and keep the desired temperatures in many manufacturing methods of metal finishing, such as metal plating, one of the most common. In metal plating, the surface of the material is covered with a thin coating of metal, such as copper or nickel.
To effectively coat the material, the metal bath must be at a precise temperature, which varies widely depending on the metal and the type of material being coated. The right heat transfer fluid can ensure that the correct temperature is reached and then maintained for the duration of the process.
Other metal finishing processes include heat treatment, metal anodizing and galvanizing. All of these techniques require the use of large process equipment, that normally need heat transfer fluids for heating and cooling.
Metal finishing applications require high temperatures for extended periods of time. As a consequence, it’s important to select a thermal fluid with good thermal stability.
All thermal oils tend to degrade over time, since at high temperatures, the bonds between hydrocarbon chains start to break and produce carbon in a process called fouling. As the concentration of carbon increases, it can deposit sludge into the pipes and reduce the efficiency of the entire system.
A thermal fluid with a high thermal stability can resist high temperatures and occasional temperature peaks. This can slow down degradation and prevent the formation of sludge.
It’s also important to choose a heat transfer fluid with a high flash point, the temperature at which a fluid produces enough vapour to be ignited. Over time, the molecules in a thermal oil will break down in a process called thermal cracking, creating volatile light ends. These cause the flash point to drop, increasing the risk of fire. Thermal oil condition monitoring is essential to maintain a safe site and ensure system availability.
Global Heat transfer can help you determine which thermal oil is best for you and will support you in monitoring the efficiency of your heat transfer process via regular sampling and engineer visits.
Like all industries, businesses in the metal finishing sector are tying to be more environmentally friendly to reduce their impact on the planet and avoid ever-increasing environmental fines. To reach this goal, it is paramount to be as thermally efficient as possible.
Subscribing to a proactive maintenance plan such as Global Heat Transfer’s Thermocare is important to guarantee that your heat transfer system is running efficiently. This includes regular system analysis, fluid top-ups and flashpoint and fouling management.
The DSEAR and ATEX regulations protect workers against risks from fire, explosion and similar events arising from dangerous substances present in the workplace, including thermal fluids. These regulations apply to all industries that use heat transfer systems, and employers in the metal finishing sector must be aware of them.
At Global Heat Transfer, our expert team will be able to advise you on how to comply with relevant laws in relation to thermal fluid management.
Have you got more questions about thermal fluid for metal finishing applications?
Call us on +44 (0)1785 760555 for more information
Want to review our case studies in Metal Finishing applications?
