THI^®F-517 Vacuum quenching oil

Brand: Thinking Finechem
Model number：THI^®F-517
Appearance: light yellow oil
Flash point: 160-240℃
package size: 170 KG / drum
For sample and more info, please contact us (Email: info@thinkingchem.com)

①Low saturated steam pressure, gasification resistant, and fast degassing speed.
②The workpiece after quenching has fine luster and easy to clean. Less wastage of the quenching fluid.
③high and uniform quenching hardness, small quenching distortion.
④Good thermal stability and long service life.

Indicator		Technical requirement			Test method
Indicator		A	B	C	Test method
Kinematic viscosity, 40℃，mm2/s≯		32	48	68	GB/T265
Flash point (open), ℃ ≮		180	190	210	GB/T3536
Water content, %≯		None	None	None	GB/T260
Pour point, ℃ ≯		-9	-9	-9	GB/T3535
Corrosion (copper, 100℃,3h), degree ≯		1	1	1	GB/T5096
Saturated vapor pressure（20℃•Pa）≤		6.7×10^-3	6.7×10^-3	6.7×10^-3	SH/T0229
Thermal oxidation stability	Viscosity ratio ≯	1.5	1.5	1.5	SH/T0219
Thermal oxidation stability	Carbon Residue，% ≯	1.5	1.5	1.5	SH/T0219
Cooling performance (liquid temperature 60℃, not stirred)	Characteristic temperature ℃ ≮	67O	68O	69O	ISO/D09950
Cooling performance (liquid temperature 60℃, not stirred)	Highest cooling speed ℃s ≮	95	90	85	ISO/D09950

①Suitable for vacuum quenching of Cr12, Cr12MoV, H13, 6542, W18Cr4V, etc., as well as vacuum heat treatment and quenching of bearing steel and large and medium-sized aviation structural steel.
②Suitable for closed quenching oil tank. In this case, the quenching oil will not have any influence on the atmosphere in the furnace.
③Suitable for vacuum furnace and negative pressure heat treatment furnace.

40℃-80℃。

①Quenching tank: The sludge, oxide scale and carbon black should be removed from the quenching tank before use, and there must be no water in the quenching tank.
②Moisture control: Be careful not to mix in moisture. If more than 400PPM of moisture is mixed in during group quenching, it may cause uneven quenching hardness and reduce the service life of quenching oil. If there is moisture, dehydrate first.
③Control of oil temperature: use instruments to monitor and control the oil temperature to keep the oil temperature within the recommended temperature range. The quenching tank should have cooling and heating devices. When choosing a cooler, it is better to choose an air cooler. If you choose a plate heat exchanger, you must ensure that the heat exchanger does not leak (note that copper or copper alloys have an aging effect on the quenching oil and cannot be used as a radiator). On the premise of meeting the quenching requirements, try to choose a lower oil temperature to extend the service life of the quenching oil.
④String control: Propeller string is the best, followed by circulating oil pump, preferably not using air pump to stir. Set appropriate stirring force according to the material, shape and size of the workpiece.
⑤Regular cleaning of impurities: the scrap iron, oxide scale, oil sludge, oil residue and other impurities in the oil tank and circulation system should be regularly precipitated, filtered and cleaned to keep the quenching oil clean.
⑥Notice: thick and large workpieces must be quickly submerged in quenching oil. If the workpiece is half in oil and half in the air, it is likely to ignite the quenching oil and cause uneven hardening of the workpiece.
⑦ Detection: regularly inspect the viscosity, flash point, water content and cooling characteristics of the quenching oil, and timely replenish the quenching oil in the oil tank.