公开(公告)号：US07238244B2

公开(公告)日：2007-07-03

申请号：US10416710

申请日：2001-11-28

申请人： Tokuo Sato ,  Yutaka Sawano ,  Tetsuya Yamamura ,  Kazuyoshi Kurosawa ,  Humihide Nakamura ,  Motohiro Tenmaya

发明人： Tokuo Sato ,  Yutaka Sawano ,  Tetsuya Yamamura ,  Kazuyoshi Kurosawa ,  Humihide Nakamura ,  Motohiro Tenmaya

IPC分类号： C23C8/50

CPC分类号： C23C8/50 ,  C23C8/52

摘要： A new nitriding process by using a salt bath to produce iron and steel parts having excellent abrasion resistance and corrosion resistance includes forming an iron lithium complex oxide layer at the outermost surface of the iron part by immersing the iron and steel parts in a salt bath containing cationic component of Li, Na and K and anionic components of CNO−and CO32−, where hydroxide compound selected from lithium hydroxide, sodium hydroxide and potassium hydroxide are added to the salt bath. Materials being in a hydrated state or in a free water containing state can be used for preparation or replenishing of the salt bath. Moistened air of (1×10−2 kg·H2O)/(1 kg dry air) can be used for mixing the salt bath. Containing ratio of Li, Na, K is preferable where a solidifying temperature of the mixture of carbonates of Li, Na, K in that ratio is lower than 500° C. It is preferable that the mol ratio of Na and K is to be 2:8˜8:2, the content of CNO− is to be 5˜35 wt %, the content of CN− in the salt bath is less than 2 wt % and the temperature of the salt bath is to be 450˜650° C.

摘要翻译： 通过使用盐浴来生产具有优异的耐磨性和耐腐蚀性的钢铁部件的新的氮化方法包括在铁部件的最外表面上形成铁锂复合氧化物层，将铁和钢部件浸入含有 Li，Na和K的阳离子成分和CNO - 和SO 3 - 2 - 的阴离子组分，其中选自氢氧化锂，钠 将氢氧化物和氢氧化钾加入到盐浴中。 处于水合状态或自由含水状态的材料可用于制备或补充盐浴。 可以使用（1×10 -2 -2.H 2 O）/（1kg干燥空气）的润湿空气来混合盐浴。 当Li，Na，K的碳酸盐混合物的固化温度低于500℃时，优选Li，Na，K的含有比例。Na和K的摩尔比优选为2 ：8〜8：2，CNO 的含量为5〜35重量％，盐浴中CN 的含量小于2重量％ 盐浴的温度为450〜650℃。

公开(公告)号：US07253332B2

公开(公告)日：2007-08-07

申请号：US10494707

申请日：2002-11-07

申请人： Ryuji Kojima ,  Humihide Nakamura ,  Yoshiyasu Yoneyama ,  Kuniji Yashiro ,  Toshiko Totsuka

发明人： Ryuji Kojima ,  Humihide Nakamura ,  Yoshiyasu Yoneyama ,  Kuniji Yashiro ,  Toshiko Totsuka

IPC分类号： A62D3/00

CPC分类号： C02F1/76 ,  C02F1/008 ,  C02F1/02 ,  C02F1/683 ,  C02F2101/18 ,  C02F2103/16 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/06

摘要： A highly reliable detoxifying method of the cyano matters is provided. The waste-liquor, which contains at least one of free cyano material, a cyano complex and a reducing compound exhibiting volatility in alkaline aqueous solution, is heated under an alkaline condition to a temperature range, which lies within a range of from room temperature to the boiling point, and which includes a high temperature range of 80° C. or more, followed by holding the temperature; oxidation-reduction potential of the waste liquor is measured from the room temperature; and, hypochlorite is intermittently or continuously added to the waste liquor from the room temperature, until the oxidation-reduction of the hypochlorite is detected.

摘要翻译： 提供了高度可靠的氰化物质的解毒方法。 在碱性水溶液中含有游离氰基，氰基络合物和显示挥发性的还原性化合物中的至少一种的废液在碱性条件下被加热至在室温〜 沸点，并且包括80℃或更高的高温范围，然后保持温度; 从室温测定废液的氧化还原电位; 并且从室温将次氯酸盐间歇地或连续地添加到废液中，直到检测到次氯酸盐的氧化还原。

公开(公告)号：US20050070752A1

公开(公告)日：2005-03-31

申请号：US10494707

申请日：2002-11-07

申请人： Ryuji Kojima ,  Humihide Nakamura ,  Yoshiyasu Yoneyama ,  Kuniji Yashiro ,  Toshiko Totsuka

发明人： Ryuji Kojima ,  Humihide Nakamura ,  Yoshiyasu Yoneyama ,  Kuniji Yashiro ,  Toshiko Totsuka

IPC分类号： C02F1/00 ,  C02F1/02 ,  C02F1/68 ,  C02F1/76 ,  A62D3/00

CPC分类号： C02F1/76 ,  C02F1/008 ,  C02F1/02 ,  C02F1/683 ,  C02F2101/18 ,  C02F2103/16 ,  C02F2209/02 ,  C02F2209/04 ,  C02F2209/06

摘要： A highly reliable detoxifying method of the cyano matters is provided. The waste-liquor (1), which contains at least one of free cyano matters, a cyano complex and a reducing compound exhibiting volatility in alkaline aqueous solution, is heated under an alkaline condition to a temperature range, which lies within a range of from room temperature to boiling point, and which includes a high temperature range of 80° C. or more, followed by holding the temperature (7); oxidation-reduction potential of the waste liquor is measured from the room temperature; and, hypochlorite (2) is intermittently or continuously added to the waste liquor from the room temperature, until the oxidation-reduction of the the hypochlorite is detected.

摘要翻译： 提供了高度可靠的氰化物质的解毒方法。 含有游离氰基物质，氰基络合物和在碱性水溶液中显示挥发性的还原性化合物中的至少一种的废液（1）在碱性条件下加热到一个以下范围内的温度范围， 室温至沸点，包括80℃或更高的高温范围，然后保持温度（7）; 从室温测定废液的氧化还原电位; 并且从室温间歇地或连续地向废液中添加次氯酸盐（2），直到检测到次氯酸盐的氧化还原。