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Propane Control Valve Material
2015-01-15 by bridge
Propane Control Valve normal operating temperature of about -163 ℃, at this temperature, the material used is generally Propane Control Valve increases strength and hardness, ductility and toughness dropped, it would seriously affect the safety Propane Control Valve under cryogenic Propane Control Valves to ensure the safety of the material become the focus of research in the field Propane Control Valve. From the perspective of metallography, does not appear at low temperature brittleness state is face-centered cubic lattice of the material presented is the focus of the present study, these materials have sufficient toughness and organizational stability, to ensure that at low temperatures will not phase transitions lead to distortion in turn affect the Propane Control Valve seal, which austenitic stainless steel low temperature deformation is small, there is no obvious chilling brittle critical temperature below -200 ℃, can still maintain a high toughness, is currently the largest selection Propane Control Valve materials.
New sealing materials research Range Top Burner Valve
Due to the low temperature of the rubber material of glass transition and most non-metallic materials exist and severe cold crisp cold and, therefore, low temperature seal between the Propane Control Valve stem and the body to use more stuffing seal structure. Currently there are Teflon packing hypothermia, asbestos, asbestos rope impregnated with PTFE and flexible graphite, etc., which can not be avoided due to asbestos leak permeability, Teflon linear expansion coefficient is large, cold serious, so it is less use of, and polytrifluoroethylene (PCTFE) embrittlement Gas Control Valves does not occur in liquid helium, oxygen and liquefied natural gas, no creep, impervious to any gas, not combustion, is a good seal polymer is currently used more sealing material.
New sealing materials research Range Top Burner Valve
Due to the low temperature of the rubber material of glass transition and most non-metallic materials exist and severe cold crisp cold and, therefore, low temperature seal between the Propane Control Valve stem and the body to use more stuffing seal structure. Currently there are Teflon packing hypothermia, asbestos, asbestos rope impregnated with PTFE and flexible graphite, etc., which can not be avoided due to asbestos leak permeability, Teflon linear expansion coefficient is large, cold serious, so it is less use of, and polytrifluoroethylene (PCTFE) embrittlement Gas Control Valves does not occur in liquid helium, oxygen and liquefied natural gas, no creep, impervious to any gas, not combustion, is a good seal polymer is currently used more sealing material.
keywords: Propane Control Valve