Gemstone Oiling & Crack Filling Machine
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Catalog excerpts

Gemstone Oiling & Crack Filling Machine - 1

BHFTECH is the largest Producer and Manufacturer of State Of Art High Pressure and Low Temperature Gemstone Oiling and Crack filling machine. The Gemstone crack filling machine is a compact and desktop model that works in any environment. The BHFTECH Oiling apparatus is used to induce resins, oils, paraffin, oleoresins and combination of compatible liquid fillers of different viscosity into the surface reaching cracks and fissures on Sapphire, Ruby, Emerald, Tourmaline and many more. The above process helps to produce enhance clarity in the gemstone by hiding their imperfections by increasing their diaphaneity. Parts Included in The Crack Filling machine. (1) Stainless steel 304 chamber to Load, heat and pressurize the stones. (2) Pressure gauge with ON -OFF Valve and pneumatic Fittings. (3) Temperature Controller with instruments (4) 2 Stage Vacuum Pump with Gauge, hose and Fittings Features & specifications (1) It is a Bench top compact Model. (2) The Net weight of the machine is 45 kgs (3) The Recommended temperature range of operation is from 25 Degree C to 100 Degree C (4) Maximum designed pressure is 600 bar which is equivalent to 8700 psi (5) Loading capacity in one shift is 1000 carats of various gemstone of full load (6) The Chamber is made up of Heavy duty stainless steel material (7) 2 stage Heavy duty vacuum pump is also included in the package (8) Digital and Programmable control unit to control pressure and temperature using SSR and sensor (9) 500 watts heater is used inside the machine at 220 V AC and 50 HZ (10) 250 Watts of current is required to maintain 3800 PSI Below is the example of TEMPERATURE-PRESSURE CORRELATION VALUES USING PARAFFIN OIL 75oC <-> 100 bar-1450 psi 80oC <-> 130 bar-1885 psi 85oc <-> 150 bar-2175 psi 90oC <-> 200 bar-2900 psi 95oC <-> 230 bar-3336 psi 120oC <> 260 bar-3771psi 150oC <> 300 bar-4351psi NOTE: Above Pressure and temperature values shall vary depending on the load, amount and Type of the filler oil used in the BHFTECH Crack Filling Chamber, and other variable process parameters 110 General Patters Road. Chennai – 600002. India. +919677296252, bhftech.info@gmail.com

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Gemstone Oiling & Crack Filling Machine - 2

1. What is the oiling and crack filling process followed in gemstones? The oiling and crack filling process is aimed to reduce the visibility of surface reaching fissures, cracks, crevices and other dislocation features in the gemstone. thus the oil treatment enhances the clarity of gemstone and improves its overall appearance, and thus increases its price. 2. Which type of gemstones are suitable for oiling? Rubies, Sapphire, Diamonds, Emerald, Opal, Turquoise, rhodochrosite. many other gemstone porus and non porus can be oiled. Many porous and non-porous gems may be oiled. 3. Which quality...

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Gemstone Oiling & Crack Filling Machine - 3

10. What is the "ideal" oil to be used in oiling process? These are few parameters for the perfect oil filler SUBSTANCE: Natural organic COLOR: Ideally colorless DISPERSION: Should be low REFRACTIVE INDEX: Most desirable is nD=1.56 DENSITY: Not critical; it may range between 0.90 to 1.00 gr/cc FLUORESCENCE: Inert, or very slightly faint fluorescence under LW or SW. VISCOSITY: The viscosity of the oil may be high at 25 Degree C, as much as 2,000 cSt.; when the oil is heated to some temperature (to be determined according to its flash point) then its viscosity should be decreased dramatically...

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