摘要:
The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of the crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of the non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.
摘要:
A far-infrared emitter of high corrosion resistance is prepared by an oxidizing heat treatment of a body made from a stainless steel of 20-35% by weight of chromium, 0.5-5.0% by weight of molybdenum, up to 3.0% by weight of manganese and up to 3.0% by weight of silicon at 900.degree.-1200 .degree. C. to form an oxidized surface film having a thickness of at least 0.2 mg/cm.sup.2. Further, a far-infrared emitter of a high emissivity approximating a black body is prepared by subjecting a body made from a stainless steel of 10-35% by weight of chromium, 1.0-4.0% by weight of silicon and up to 3.0% by weight of manganese to a blasting treatment to roughen the surface followed by an oxidizing heat treatment at 900.degree.-1200 .degree. C. to form an oxide film on the surface in the form of protrusions having a length of at least 5 .mu.m.
摘要翻译:通过氧化热处理由20-35重量%的铬,0.5-5.0重量%的钼,至多3.0重量%的钼的不锈钢制成的远红外发射体, 锰和在900-1200℃下高达3.0重量%的硅,以形成厚度为至少0.2mg / cm 2的氧化表面膜。 此外,通过将由10-35重量%的铬,1.0-4.0重量%的硅和不超过3.0重量%的由不锈钢制成的体不锈钢制成的主体由高达3.0%的硅制成的远红外发射体 重量的锰进行喷砂处理以使表面粗糙化,然后在900-1200℃下进行氧化热处理,以在表面上形成具有至少5μm的长度的突起形式的氧化膜。
摘要:
Waste water containing at least two kinds of components among suspended solids, ammonia and chemically oxidizable substances is treated in a liquid phase oxidation in the presence of a catalyst supported by a carrier of honeycomb construction.
摘要:
The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of said crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of said non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.
摘要:
This invention provides a carbon-containing ceramic composite for molten non-ferrous metal, the composite being a sintered ceramic body to be used in contact with molten non-ferrous metal, the sintered body containing an aggregate of silicon carbide and/or silicone nitride, the sintered body being characterized in that it comprises,(a) 100 parts by weight of the aggregate,(b) 5 to 45 parts by weight of flake graphite, and(c) boron carbide in an amount of 10 to 40% by weight based on the flake graphite.
摘要:
The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of said crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of said non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.
摘要:
An energy supply system for supplying, in system interconnection, power received at a power receiving equipment from a power plant and power generated by a fuel cell to a power consuming installation, and supplying heat generated by the fuel cell to a heat consuming installation. This system includes an operation amount computing device for computing an amount of operation of the fuel cell to minimize an equation y=aXL+bXM+cXN, in response to an energy demand of the power consuming installation and heat consuming installation. A control device controls the fuel cell to satisfy the amount of operation computed. The system supplies energy in optimal conditions with respect to the cost borne by an energy consumer, consumption of primary energy, and release of environmental pollutants. Energy is effectively used from the standpoint of the energy consumer and a national point of view.
摘要:
A far-infrared emitter of high corrosion resistance is prepared by an oxidizing heat treatment of a body made from a stainless steel of 20-35% by weight of chromium, 0.5-5.0% by weight of molybdenum, up to 3.0% by weight of manganese and up to 3.0% by weight of silicon at 900.degree.-1200.degree. C. to form an oxidized surface film having a thickness of at least 0.2 mg/cm.sup.2. Further, a far-infrared emitter of a high emissivity approximating a black body is prepared by subjecting a body made from a stainless steel of 10-35% by weight of chromium, 1.0-4.0% by weight of silicon and up to 3.0% by weight of manganese to a blasting treatment to roughen the surface followed by an oxidizing heat treatment at 900.degree.-1200.degree. C. to form an oxide film on the surface in the form of protrusions having a length of at least 5 .mu.m.
摘要翻译:通过氧化热处理由20-35重量%的铬,0.5-5.0重量%的钼,至多3.0重量%的钼的不锈钢制成的远红外发射体, 锰和在900-1200℃下高达3.0重量%的硅,以形成厚度为至少0.2mg / cm 2的氧化表面膜。 此外,通过将由10-35重量%的铬,1.0-4.0重量%的硅和不超过3.0重量%的由不锈钢制成的体不锈钢制成的主体由高达3.0%的硅制成的远红外发射体 重量的锰进行喷砂处理以使表面粗糙化,然后在900-1200℃下进行氧化热处理,以在表面上形成具有至少5μm的长度的突起形式的氧化膜。