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    • 2. 发明授权
    • Ammonia gas analyzer
    • 氨气分析仪
    • US4432939A
    • 1984-02-21
    • US250790
    • 1981-04-03
    • Atsuo WatanabeTeruo KanekoTakeo TanakaYoshio Saito
    • Atsuo WatanabeTeruo KanekoTakeo TanakaYoshio Saito
    • G01N21/75G01N31/00G01N33/00G01N31/10G01N21/00
    • G01N31/005G01N21/75G01N33/0013Y10T436/175383
    • An ammonia gas analyzer and a sulfuric acid converter utilized in the ammonia gas analyzer in which a sample gas is maintained at a relatively high temperature prior to entering the sulfuric acid converter to thereby prevent acidic sulfuric acid sulfates and/or ammonia sulfates from crystallizing and being deposited on the walls of the device. The ammonia gas analyzer includes gas sampling means, a gas measuring channel connected to the gas sampling means, a comparison gas channel connected parallel to the measuring gas channel with the measuring gas channel including an NH.sub.3 /NO converter for converting NH.sub.3 in a sample gas into NO and means for measuring a concentration of NH.sub.3 on the basis of variations of an amount of NO in the measuring gas channel with respect to that in the comparison gas channel. A first sulfuric acid converter has an inlet connected to the sampling means and an outlet connected to an inlet portion of the comparison gas channel for converting sulfuric acid, sulfate and sulfur trioxide in the sample gas into sulfur dioxide. A second sulfuric acid converter has an inlet connected to the outlet of the NH.sub.3 /NO converter and an outlet connected to an inlet of the measuring means.
    • 在氨气分析器中使用的氨气分析仪和硫酸转化器,其中样品气体在进入硫酸转化器之前保持在相对较高的温度,从而防止酸性硫酸硫酸盐和/或氨基硫酸盐结晶并成为 沉积在设备的墙壁上。 氨气分析器包括气体采样装置,连接到气体采样装置的气体测量通道,与测量气体通道平行连接的比较气体通道,测量气体通道包括用于将样品气体中的NH 3转化成NH 3 / NO转化器 NO和基于测量气体通道中的NO的量相对于比较气体通道中的NO的量的变化来测量NH 3浓度的装置。 第一硫酸转化器具有连接到采样装置的入口和连接到比较气体通道的入口部分的出口,用于将样品气体中的硫酸,硫酸盐和三氧化硫转化成二氧化硫。 第二硫酸转化器具有连接到NH 3 / NO转化器的出口的入口和连接到测量装置的入口的出口。
    • 4. 发明授权
    • Oriented magnetic steel sheets and manufacturing process therefor
    • 定向磁钢板及其制造工艺
    • US5425820A
    • 1995-06-20
    • US1618
    • 1993-01-08
    • Hiroyoshi YashikiTeruo KanekoTakashi Tanaka
    • Hiroyoshi YashikiTeruo KanekoTakashi Tanaka
    • C21D8/12C21D9/46C22C38/00C22C38/02C22C38/04C22C38/06H01F1/147
    • C21D8/12C22C38/02C22C38/04H01F1/14775C21D8/1227C21D8/1272
    • An oriented magnetic steel sheet with a very low core loss and a process for manufacturing it at a lower cost are disclosed. The steel sheet consists essentially of Si: greater than 3.0% and at most 6.0%, Mn: greater than 2.0% and at moat 8.0%, sol. Al: 0.003-0.015%, with Si (%)-0.5.times.Mn (%).ltoreq.2.0 and the balance being Fe and incidental impurities, The amounts of C, N, and S as impurities are respectively at most 0.005%, at most 0.006%, and at most 0.01%. This steel sheet can be produced from a slab containing up to 0.01% C., up to 0.01% S and 0.001-0.010% N by (i) hot rolling the slab to obtain a hot-rolled steel sheet, (ii) cold rolling the hot-rolled steel sheet, as hot-rolled or after being subsequently annealed, one or more times with an intermediate annealing performed between successive stages of cold rolling to prepare a cold-rolled sheet, (iii) causing primary recrystallization by continuous annealing of the cold-rolled sheet, and (iv) finish annealing the continuously annealed steel sheet. The cold rolling may be carried out at a sheet temperature of 70.degree.-300.degree. C. The finish annealing preferably comprises causing secondary recrystallization by holding the annealed sheet in a temperature range of 825.degree.-925.degree. C. for 7-100 hours in a nitrogen-containing atmosphere, and holding the secondary-recrystallized sheet in a temperature range greater than 925.degree. C. and up to 1050.degree. C. for 4-100 hours in a hydrogen atmosphere to carry out purification annealing.
    • 公开了一种磁芯损耗非常低的取向磁性钢板及其制造成本低的方法。 钢板基本上由Si组成:大于3.0%,最多6.0%,Mn:大于2.0%,护城河8.0%,溶胶。 Al:0.003-0.015%,Si(%)-0.5×Mn(%)≤2.0,余量为Fe和杂质,作为杂质的C,N和S的量分别为0.005%以下, 最多0.006%,最多0.01%。 该钢板可以通过(i)热轧板坯得到热轧钢板,由含有高达0.01%C,至多0.01%S和0.001-0.010%N的板坯制造,(ii)冷轧 热轧后或退火后的热轧钢板进行一次以上的连续冷轧后的中间退火,制成冷轧板,(iii)通过连续退火进行一次再结晶 冷轧板,(iv)对连续退火的钢板进行最终退火。 冷轧可以在70℃-300℃的板温下进行。最终退火优选包括通过将退火板保持在825-925℃的温度范围内进行二次再结晶7-100小时 含氮气氛中,并在氢气氛中将二次再结晶的片材在大于925℃和高达1050℃的温度范围内保持4-100小时以进行纯化退火。