The high-end vacuum manufacturing industry is developing rapidly. Vacuum coating, vacuum smelting, electronic component processing, and precision scientific research instruments have continuously raised their requirements for the cleanliness of the vacuum environment, the extreme vacuum level, and the long-term stability of the medium. The vacuum diffusion pump, as the core equipment for obtaining high vacuum, the quality of the diffusion pump oil directly determines the extreme vacuum degree, the stability of the equipment operation, and the product yield. Product 702 vacuum diffusion pump oil has completed large-scale production and, with its extremely low saturated vapor pressure, excellent thermal stability and antioxidant capacity, it is widely suitable for high-vacuum conditions in industrial manufacturing and scientific research instruments, providing a reliable working medium for various high-vacuum equipment.
Product 702 vacuum diffusion pump oil has an appearance of colorless transparent liquid, with stable and controllable physical and chemical indicators. At 25℃, the kinematic viscosity remains at 45±3 cst, the flow characteristics are balanced, which can ensure the formation of a stable steam jet inside the diffusion pump and efficiently remove the gas inside the cavity; the refractive index is controlled within the range of 1.5100-1.5300, the relative density at 25℃ is 1.08; the open cup flash point can reach 195℃, ensuring good safety in continuous heating conditions of the equipment; the freezing point is as low as -40℃, making it less likely to solidify in low-temperature environments or after equipment shutdown, meeting the usage conditions of workshops with large temperature fluctuations. The core vacuum performance indicators are outstanding, with an extreme vacuum degree of <1.333×10⁻⁴Pa, and the saturated vapor pressure is also lower than 1.333×10⁻⁴Pa. The extremely low saturated vapor pressure can effectively inhibit the return of the medium, reduce vacuum chamber contamination, and ensure the cleanliness of the vacuum environment.
The extremely low saturated vapor pressure is the most critical advantage of product 702 vacuum diffusion pump oil. Under the continuous high-temperature operation of the diffusion pump, the medium volatilization is small, and there is no problem of backflow contamination of the workpiece, significantly reducing the frequency of vacuum chamber cleaning and reducing the downtime for maintenance. At the same time, the product has excellent thermal stability and antioxidant properties, and is not prone to cracking, oxidation, or deterioration in the high-temperature environment of the diffusion pump for a long time, slowing down the aging speed of the oil and extending the oil change cycle, helping enterprises reduce material usage costs and equipment operation workload. Compared with ordinary mineral-based diffusion pump oil, organic silicon-based diffusion pump oil has significant advantages in temperature resistance and anti-aging performance, and is not prone to carbon deposits or gums, continuously maintaining the pumping efficiency of the vacuum pump.
The application scenarios of the product are extensive. In the high-vacuum smelting industry, stable vacuum conditions ensure that the metal smelting and purification processes are not disturbed by impurity gases; in the manufacturing of electronic tubes and lighting bulbs, the high-vacuum environment is used to complete cavity degassing, improving the lifespan of components; in the vacuum coating field, whether it is optical coatings, decorative coatings, or functional coatings, a clean and stable high-vacuum environment is the basis for the uniformity and adhesion of coating, and product 702 diffusion pump oil can effectively support the stable operation of continuous coating production lines. In addition, this oil is also suitable for high-end scientific research and precision electronic instruments such as atomic energy accelerators, electron microscopes, and vacuum displays, meeting the high-precision vacuum experimental needs of laboratories.
The complete packaging scheme is suitable for the purchasing needs of different scale users. Product 702 vacuum diffusion pump oil has various specifications such as 1 kg plastic bottles, 5 kg plastic drums, 25 kg plastic drums, 50 kg plastic drums, and 200 kg iron drums, which are convenient for small-scale sample procurement by research institutions and also suitable for large-scale inventory preparation by vacuum factories. In terms of storage and transportation, the product can be stored in a moisture-proof and light-proof warehouse, with an applicable temperature range of -40 to 50℃, avoiding direct sunlight; it is stored as a non-dangerous goods, without the need for complex hazardous material approval procedures, effectively simplifying logistics operations and reducing storage and transportation costs. Under standard storage conditions, the product has a shelf life of up to 2 years, providing sufficient shelf life for enterprises to reasonably plan raw material inventory. In recent years, the domestic industries of vacuum coating, new material smelting, precision electronics, and scientific research equipment have continued to expand. The demand for domestic production of supporting media for high-end vacuum equipment has been constantly increasing. Previously, high-performance vacuum diffusion pump oil was largely dependent on imports, with long procurement cycles and high overall usage costs. Product 702 vacuum diffusion pump oil has stable indicators, continuous supply, and controllable delivery, accelerating the process of replacing imported high-vacuum supporting consumables with domestic products.
The product quality of vacuum processes is highly dependent on the stability of vacuum degree. Poor diffusion pump oil is prone to problems such as vacuum attenuation, rapid oil aging, and contamination of workpieces by the oil, directly causing the products to be scrapped. The industry is continuously upgrading towards continuous, high-precision, and intelligent vacuum production, and the market demand for long-lasting, low backflow, and highly stable diffusion pump oil is steadily increasing. Product 702 vacuum diffusion pump oil takes into account vacuum performance, aging resistance, and usage economy, covering numerous application scenarios in industrial production and scientific research instruments, providing high-quality media options for vacuum equipment manufacturers and vacuum processing enterprises, and continuously helping to promote the high-quality development of the domestic high-vacuum equipment industry chain.