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公开(公告)号：US4299268A
公开(公告)日：1981-11-10
申请号：US149459
申请日：1980-05-13
CPC分类号： B22D39/00
摘要： A casting plant comprises a pressure ladle and a small-capacity tilting ladle to regulate the filling of molds making up a casting line and successively moving to a position beneath the tilting ladle. The control system comprises two servo loops. One servo loop includes sensors acting upon a motor to control the angular position of the tilting ladle so that the level of metal in the pouring gate of the mold remains constant during the pouring operation. During this time, an optical sensor, an angular-position sensor, and a pressure sensor included in the other servo loop supply input data which are processed to supply a signal acting upon a valve in a gas line feeding the pressure ladle. This valve regulates the flow of molten metal from the pressure ladle to the tilting ladle so that the quantity of metal contained in the tilting ladle remains substantially constant.
摘要翻译： 铸造设备包括压力钢包和小容量倾斜钢包，用于调节构成铸造线的模具的填充，并且连续地移动到倾斜钢包下方的位置。 控制系统包括两个伺服回路。 一个伺服回路包括作用在马达上的传感器，以控制倾斜钢包的角度位置，使得浇注操作期间模具的浇注浇口中的金属水平保持恒定。 在此期间，包括在另一个伺服环路中的光学传感器，角位置传感器和压力传感器提供输入数据，该输入数据被处理以提供作用在供给压力浇包的气体管线中的阀上的信号。 该阀调节熔融金属从压力钢包到倾斜钢包的流动，使得包含在倾斜钢包中的金属的数量基本保持不变。
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公开(公告)号：US4210192A
公开(公告)日：1980-07-01
申请号：US778588
申请日：1977-03-17
CPC分类号： B22D39/00
摘要： Method and apparatus for automatically controlling the pouring of molten metal into a series of closed casting molds is disclosed. Molten metal flows in a stream from a lip-pour or bottom-pour casting ladle into a pouring gate at the top of a mold and partially fills the gate. Visible light or infrared radiation is emitted from the metal surface in the gate and is detected by a sensing device. The sensing device generates a signal which is a function of the radiation received, and therefore the apparent area of the surface of metal in the gate. The signal operates a ladle control mechanism to control the flow rate of the stream to keep the gate level substantially constant during pouring.
摘要翻译： 公开了一种用于自动控制熔融金属浇注成一系列封闭的铸模的方法和设备。 熔融金属以从倾倒式或底部浇注浇包的流流入模具顶部的浇注浇口并部分地填充浇口。 可见光或红外辐射从栅极中的金属表面发射并由感测装置检测。 感测装置产生作为所接收的辐射的函数的信号，因此产生栅极中的金属表面的表观面积。 信号操作钢包控制机构以控制流的流速以在浇注期间保持浇口水平基本上恒定。
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公开(公告)号：US4858463A
公开(公告)日：1989-08-22
申请号：US249239
申请日：1988-09-26
申请人： Meinrad Rosse , Marc-Henri Rossier
发明人： Meinrad Rosse , Marc-Henri Rossier
CPC分类号： G01M3/329
摘要： The tightness of sealed packages is monitored by means of a process and an apparatus system which utilize and incorporate a first system section, which includes at least one reservoir and a pressure measuring cell, a second system section, which includes a rigid measuring chamber, and means for adjusting pressure of the system sections via the first system section. The first system section is first pressurized to a predetermined pressure, which may be either above or below atmospheric pressure, and then the first and second system sections are brought into communication for establishing a second pressure for the first and second system sections combined. Major leaks in the sealed packages, absence of a sample in the measuring chamber and leaks in the measuring chamber then may be detected with the aid of the pressure measuring cell. For detecting other than major leaks, the first and second system sections then are isolated and a differential pressure cell detects the pressures of the first and second system sections for a timing sufficient to detect differences in pressure between the first and second system sections for detecting if the package being tested has leaks.
摘要翻译： 密封包装的密封性通过使用和结合包括至少一个储存器和压力测量单元的第一系统部分的过程和装置系统来监测，第二系统部分包括刚性测量室，以及包括刚性测量室 用于经由第一系统部分调节系统部分的压力的装置。 第一系统部分首先被加压到预定的压力，该压力可以高于或低于大气压，然后使第一和第二系统部分连通，以建立用于组合的第一和第二系统部分的第二压力。 密封包装中的主要泄漏，测量室中的样品不存在，并且在测量室中泄漏，可以借助于压力测量池来检测。 为了检测除了主要的泄漏之外，第一和第二系统部分被隔离，并且差压单元检测第一和第二系统部分的压力，其时间足以检测第一和第二系统部分之间的压力差异，以检测是否 被测试的包装有泄漏。
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