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    • 14. 发明授权
    • Heat treating method and device
    • 热处理方法及装置
    • US5445521A
    • 1995-08-29
    • US250379
    • 1994-05-27
    • Eiji YamaguchiKaoru FujiharaTakenobu MatsuoHirofumi Kitayama
    • Eiji YamaguchiKaoru FujiharaTakenobu MatsuoHirofumi Kitayama
    • C23C16/44C23C16/455C23C16/52C30B25/14F27D19/00F27D5/00
    • C23C16/45557C23C16/4401C23C16/52C30B25/14F27D19/00F27D2019/0009F27D2019/0068
    • A heat treating device including a pressure detecting unit for outputting an output signal when a pressure in a heat processing furnace becomes a set value, an air release pipe having a first valve and a check valve, a differential pressure gauge shut off by a second valve in terms of pressure from the interior of the heat processing furnace, and an air feed pipe having a third valve. One ends of each of the air release pipe and the air feed pipe is connected respectively to the heat processing furnace and the other ends opened in air. In such arrangement, after processing gases are evacuated from the heat processing furnace, an inert gas is fed. Then when an internal pressure of the furnace becomes near an air pressure, the first valve is opened in response to the output signal of the pressure detecting unit to make the internal pressure of the heat processing furnace a little higher than the air pressure. When a differential pressure value of the differential pressure gauge is below a set value, the third value is opened to communicate the interior of the heat processing furnace with air through the air feed pipe. Then the cap closing the opening of the heat processing furnace is opened.
    • 一种热处理装置,包括:当热处理炉中的压力变为设定值时输出输出信号的压力检测单元;具有第一阀和止回阀的排气管,由第二阀关闭的差压表 在来自热处理炉的内部的压力和具有第三阀的进气管。 每个排气管和供气管的一端分别连接到热处理炉,另一端在空气中敞开。 在这样的布置中,在处理气体从热处理炉抽出之后,供给惰性气体。 然后,当炉子的内部压力接近空气压力时,响应于压力检测单元的输出信号打开第一阀门,使得热处理炉的内部压力比空气压力高一点。 当差压表的差压值低于设定值时,打开第三值,以使热处理炉的内部通过供气管与空气相通。 然后关闭热处理炉的开口的盖子打开。
    • 18. 发明授权
    • Method of restoring used molding sand
    • 恢复使用型砂的方法
    • US6056042A
    • 2000-05-02
    • US169591
    • 1998-10-09
    • Kazuharu MatsuiTakehiko MatsumotoJunichi IwasakiEiji Yamaguchi
    • Kazuharu MatsuiTakehiko MatsumotoJunichi IwasakiEiji Yamaguchi
    • B22C5/00B22C5/14B22C19/04B22C5/18
    • B22C19/04B22C5/00
    • Measuring the degree of restoration during the restoring treatment of the used molding sand and comparing the measured degree of restoration to a permissible degree, comprising the following steps: First, the restored sand is photographed to project it as a picture on a monitor. A picture-processing device divides that picture into a certain number of picture parts and the brightness of each picture part is compared to the standard brightness, which is chosen beforehand. The degree of restoration is judged based on the number of picture parts that are lighter or darker than the standard brightness. The restoring treatment is stopped when the result of the comparison shows that the restoration has reached the permissible degree, but is continued when the result does not reach it. The operation of measuring the degree of restoration during the treatment is also repeated until it reaches the permissible degree. Then the treatment is stopped.
    • 测量在使用的型砂的恢复处理中的恢复程度并将测量的恢复程度与允许的程度进行比较,包括以下步骤:首先,将恢复的砂照片作为图像投影到监视器上。 图像处理装置将该图像分割成一定数量的图像部分,并将每个图像部分的亮度与预先选择的标准亮度进行比较。 基于比标准亮度更亮或更暗的图像部分的数量来判断恢复度。 当比较结果表明恢复已达到允许程度时,停止恢复处理,但是当结果未达到时,继续进行恢复处理。 测量治疗过程中恢复程度的操作也重复,直到达到允许的程度。 然后治疗停止。