摘要:
A specified metal member included among the components of a valve, coupling or like fluid handling part for use in piping and fluid control devices is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5 to 7.0% of Mo, 0.5 to 3.0% of Cu, 0.1 to 0.3% of N, and the balance substantially Fe and other inevitable impurities, the alloy having a CRI (crevice corrosion resistance index) value in the range of 40≦CRI≦55, as determined from the expression CRI=[Cr]+4×[Mo]+30×[N] wherein the amount of alloy components present in combination in the alloy to ensure crevice corrosion resistance are expressed in % by weight.
摘要:
A laminate which is excellent in appearance, adhesion, scratch resistance, abrasion resistance and hot water resistance and has a high level of weatherability and excellent durability, and an acrylic resin composition and an organosiloxane resin composition both of which can be used for the manufacture of the above laminate and have excellent storage stability.The laminate comprises a polycarbonate substrate, a first layer formed on the surface of the polycarbonate substrate, and a second layer formed on the surface of the first layer, whereinthe first layer is composed of a crosslinked acrylic copolymer and an ultraviolet light absorber, and the second layer is composed of a crosslinked organosiloxane polymer; andthe crosslinked acrylic copolymer comprises specific recurring units and an urethane bond in a specific ratio, and the organosiloxane polymer has a specific structure composed of colloidal silica and alkoxysilanes.
摘要:
A specified metal member (e.g., a bolt) 5 included among a plurality of components 2, 3, 4, 5, 6 of a fluid handling part and having a surface exposed on an exterior of the fluid handling part is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5 to 7.0% of Mo, 0.5 to 3.0% of Cu, 0.1 to 0.3% of N, and the balance substantially Fe and other inevitable impurities.
摘要:
A pipe coupling 30 comprises a tubular body 31 for a pipe 32 to be inserted in through the rear end thereof, a front ring 33 and a back ring 34 to be fitted around the pipe 32 projecting from the rear end of the body 31, and a cap nut 35 for tightening up the front and back rings 33, 34 to fix the pipe 32 to the body 31. The back ring 34 is made of an alloy comprising, in % by weight, 0.001 to 0.01% of C, up to 5% of Si, up to 2% of Mn, up to 0.03% of P, up to 100 ppm of S, up to 50 ppm of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5 to 7.0% of Mo, 0.5 to 3.0% of Cu, 0.1 to 0.3% of N, and the balance substantially Fe and other inevitable impurities.
摘要翻译:管接头30包括用于管32的管状体31,其通过其后端插入,前环33和后环34围绕从主体31的后端突出的管32配合,以及 用于紧固前后环33,34以将管32固定到主体31的盖螺母35。 后环34由以重量%计含有0.001至0.01%C,至多5%Si,至多2%Mn,至多0.03%P,至多100ppm S ,高达50ppm的O,18〜25%的Cr,15〜25%的Ni,4.5〜7.0%的Mo,0.5〜3.0%的Cu,0.1〜0.3%的N,余量基本上是Fe等 不可避免的杂质。
摘要:
The present invention provides a safety valve with improved safety which is to be mounted to a container for releasing gas within the container if the temperature rises. A main body 3 includes a mounting portion 6 inserted in an opening provided in a container T, and a large-diameter portion 5 having an outer diameter larger than that of the mounting portion 6 and being brought into contact with the surface of the container T at an outer peripheral edge portion 5a. A housing 2 is abutted, at a lower surface thereof, against an upper surface of the outer peripheral edge portion 5a of the large-diameter portion of the main body 3. The outer peripheral edge portion 5a of the large-diameter portion of the main body 3 is provided with a plurality of axial through holes 32, and the housing 2 is provided, from the lower surface, with male screw portions 33 conforming to the respective axial through holes 32. The main body 3 and the housing 2 are coupled to each other, through a plurality of male screw members 34 inserted from the lower surface of the outer peripheral edge portion 5a of the large-diameter portion of the main body 3.
摘要:
A safety valve 1 comprises a main body 2, fixed body 2, meltable body 7, movable body 8, biasing member 9, movable plug 10 and plug holding means 11. The fixed body 2 has a small axial passageway 14 communicating with the interior of a container T, and a large axial passageway 15 having an upper-end opening. The movable plug 10 has a small rod portion 18 fitting in the upper end of the small axial passageway 14 of the fixed body 2, an intermediate rod portion 19 providing a clearance therearound inside a lower end portion of the large axial passageway 15 of the fixed body 2, and a large rod portion 20 slidably fitting in an intermediate portion of the large axial passageway 15 of the fixed body 2. The large rod portion 20 of the movable plug 10 has an axial passage 21 extending from the upper end thereof to the lower end thereof, and the intermediate rod portion 19 of the plug 10 is provided with communication passageways 22 having openings in a peripheral surface thereof and communicating with the lower end of the axial passage 21.
摘要:
It is an object of the present invention to provide a laminate having excellent weatherability and abrasion resistance as well as adhesion.The present invention relates to a laminate comprising a base, a first layer formed by thermally curing an acrylic resin composition and a second layer formed by thermally curing an organosiloxane resin composition, all of which are formed in the mentioned order, wherein the acrylic resin composition comprises: (A) an acrylic copolymer which contains at least 70 mol % of a recurring unit represented by the following formula (A): wherein X is a hydrogen atom or methyl group, and Y is a methyl group, ethyl group, cycloalkyl group, hydroxyalkyl group having 2 to 5 carbon atoms or triazine-based ultraviolet absorber residue; (B) a blocked polyisocyanate compound; (C) a curing catalyst; and (D) a triazine-based ultraviolet absorber, and the organosiloxane resin composition comprises: (E) colloidal silica and (F) a hydrolysis condensate of an alkoxysilane.
摘要:
It is an object of the present invention to provide a laminate having excellent weatherability and abrasion resistance as well as adhesion.The present invention relates to a laminate comprising a base, a first layer formed by thermally curing an acrylic resin composition and a second layer formed by thermally curing an organosiloxane resin composition, all of which are formed in the mentioned order, wherein the acrylic resin composition comprises: (A) an acrylic copolymer which contains at least 70 mol % of a recurring unit represented by the following formula (A): wherein X is a hydrogen atom or methyl group, and Y is a methyl group, ethyl group, cycloalkyl group, hydroxyalkyl group having 2 to 5 carbon atoms or triazine-based ultraviolet absorber residue; (B) a blocked polyisocyanate compound; (C) a curing catalyst; and (D) a triazine-based ultraviolet absorber, and the organosiloxane resin composition comprises: (E) colloidal silica and (F) a hydrolysis condensate of an alkoxysilane.
摘要:
A safety valve comprises a main body, fixed body, meltable body, movable body, biasing member, movable plug and plug holding means. The fixed body has a small passageway communicating with the interior of a container, and an upper large passageway. The movable plug has a small portion fitting in the upper end of the small passageway of the fixed body, an intermediate portion providing a clearance therearound inside a lower end portion of the large passageway of the fixed body, and a large portion slidably fitting in an intermediate portion of the large passageway of the fixed body. The large rod portion of the movable plug has a passage extending from its upper end to its lower end, and the intermediate portion of the plug is provided with communication passageways having openings in its peripheral surface and communicating with the lower end of the passage.