High-precision processing of PTFE filled materials using water jet.
Product Name: Oval Packing Material: V7020 1.5t This case study involves the processing of oval packing made from V7020, intended for ultra-low temperature applications. The oval shape tends to have an uneven stress distribution compared to circular shapes, and the inner and outer dimensions along with curve reproducibility significantly affect sealing performance. By adopting water jet processing, we avoided the thermal impact risks associated with PTFE fillers and smoothly reproduced free curves. We achieved stable dimensional control even under a tolerance condition of ±0.5. In ultra-low temperature environments such as LNG, liquid nitrogen, and liquid oxygen, maintaining material properties and surface pressure stability is crucial. This product is designed as a sealing component to meet those requirements.
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basic information
Product Features (V7020) V7020 is a sheet made by blending inorganic fillers with PTFE. It is used as a gasket for applications requiring chemical and heat resistance, or for gas flanges and equipment at extremely low temperatures such as LNG, liquid nitrogen, liquid oxygen, and ethylene. Processing Method (Water Jet Cutting) Water jet cutting is a hydraulic cutting machine that uses high-pressure water to cut materials. It processes by spraying high-pressure water. By changing the injection nozzle according to the processing material, high-quality products can be produced in a short time. Additionally, the dimensional tolerances that were significantly affected by traditional manual processing are greatly improved, resulting in stable processing accuracy. The taper on the cut surface from press processing can also be improved with water jet cutting.
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Q&A Q1. Why is V7020 suitable for ultra-low temperature applications? A1. It is because it is formulated with inorganic fillers based on PTFE, which allows it to maintain stable physical properties even in low-temperature environments. Q2. What are the important points in oval shape processing? A2. The dimensional reproducibility in the long and short axis directions and the management of inner and outer circumference balance. Q3. What are the advantages of water jet processing? A3. It does not cause thermal effects and can reproduce free curves with high precision. Daiko's responsiveness Daiko provides consistent support from the selection of ultra-low temperature compatible materials to the proposal of processing methods and the digitization of drawing data. We can flexibly accommodate prototypes, small lots, and custom shapes. We specialize in large diameters, special shapes, and high-precision processing, supporting both sealing performance and processing accuracy.
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Company information
Daiko is a manufacturer specialized in processing various industrial products, including gaskets and packing. With industry-leading processing equipment, including one of Japan's largest water jet cutting machines, and a wide range of materials such as joint sheets, rubber, resin, and metal, we meet our customers' diverse needs. Leveraging the technology and experience we have cultivated over 50 years, we provide high-quality, short-lead-time, and low-cost products to contribute to solving our customers' challenges. To respond to our customers' varied needs, Daiko's production bases are equipped with various processing facilities. Among them, the water jet cutting machines, with a total of four installed at our Osaka headquarters and Tokyo branch, boast one of the largest scales in the country. The maximum processing range is W4,000 × L5,500 mm, allowing for the high-precision manufacturing of large-diameter gaskets and packing. By maximizing material efficiency, we achieve the provision of 'high quality at low cost.'
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