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1. 发明授权

US4685973A Reclamation of foundry sands 失效
标题翻译：铸造砂的回收
公开(公告)号：US4685973A
公开(公告)日：1987-08-11
申请号：US696282
申请日：1985-01-30
申请人： Michael C. Ashton
发明人： Michael C. Ashton
IPC分类号： B22C5/18 , B08B7/04
CPC分类号： B22C5/185
摘要： A used foundry sand, especially one which has been bonded using sodium silicate binder, is reclaimed by agitating the sand with water in a plenum chamber having a suspended floor comprising a porous membrane, stopping the agitation and allowing the solids to settle on the floor. The water passes through and the sand settles on the floor, and the finer particles may then be removed e.g. by air elutriation. Preferably the water mixed with the sand has a pH below 10 and contains a flocculant, and the water recovered from the vessel has suspended solids content below 500 mg/liter.
摘要翻译：使用硅酸钠粘合剂粘合的已使用的铸造砂通过在具有包括多孔膜的悬浮地板的增压室中用水搅拌而回收，停止搅拌并使固体沉降在地板上。水通过并且沙子沉降在地板上，然后可以去除较细的颗粒，例如，通过空气淘析。与砂混合的水优选具有低于10的pH并含有絮凝剂，并且从容器回收的水具有低于500mg /升的悬浮固体含量。

2. 发明授权

US4665966A Riser sleeves for metal casting moulds 失效
标题翻译：金属铸造模具提升套管
公开(公告)号：US4665966A
公开(公告)日：1987-05-19
申请号：US864853
申请日：1986-05-20
申请人： Max G. Neu , Michael J. Gough , Michael C. Ashton , Roger Wallis
发明人： Max G. Neu , Michael J. Gough , Michael C. Ashton , Roger Wallis
IPC分类号： B22C9/08 , B22D33/04
CPC分类号： B22C9/088
摘要： A riser sleeve has at its end which is uppermost when the sleeve is located in the mould a holding member which can be engaged by a mechanical holding device so as to adapt the sleeve to automatic handling. The holding member may be for example a disc, ring or solid or hollow cylinder and may be formed integrally with the sleeve or formed separately and fixed to the sleeve. By adopting a standard shape and size for the holding member for a wide range of sleeve shapes and sizes the same holding device can be used to handle the whole range of sleeves.
摘要翻译：当套筒位于模具中时，提升套筒的端部最上方是保持构件，该保持构件可由机械保持装置接合，以使套筒适应自动处理。保持构件可以是例如盘，环或实心或中空圆柱体，并且可以与套筒一体地形成或单独形成并固定到套筒上。通过采用用于保持构件的标准形状和尺寸用于宽范围的套筒形状和尺寸，可以使用相同的保持装置来处理整个套筒的范围。

3. 发明授权

US4660623A Ceramic shell moulds, manufacture and use 失效
标题翻译：陶瓷壳模具，制造和使用
公开(公告)号：US4660623A
公开(公告)日：1987-04-28
申请号：US571241
申请日：1984-01-16
申请人： Michael C. Ashton
发明人： Michael C. Ashton
IPC分类号： B22C13/08 , B22C9/00 , B22C9/04 , B22C1/02
CPC分类号： B22C9/046
摘要： A thin shell ceramic mould for use in metal casting is formed by applying a thin coating of a suitable material and binder to an expandable pattern, e.g. expanded polystyrene, having a density of about 30 to 50 kg/cu.m. The coated pattern is subjected to heat at a temperature of about 1000.degree. C. for 10 minutes to burn out the pattern and cure the coating. The ceramic shell is made just thick enough to be handled.
摘要翻译：用于金属铸造的薄壳陶瓷模具通过将适当的材料和粘合剂的薄涂层施加到可膨胀图案上而形成。发泡聚苯乙烯，密度约为30至50公斤/立方米。将涂覆图案在约1000℃的温度下加热10分钟以烧尽图案并固化涂层。陶瓷外壳制作得足够厚，可以处理。

4. 发明授权

US4612968A Method of casting using expendable patterns 失效
标题翻译：使用消耗型图案进行铸造的方法
公开(公告)号：US4612968A
公开(公告)日：1986-09-23
申请号：US763759
申请日：1985-08-07
申请人： Michael C. Ashton , Derek A. Bish , Stephen G. Sharman
发明人： Michael C. Ashton , Derek A. Bish , Stephen G. Sharman
IPC分类号： B22C9/04 , B22C15/10 , B22C15/22
CPC分类号： B22C9/046
摘要： A method of casting a metal article in a mould box comprises locating an expendable pattern in the box, the pattern having a gas permeable refractory coating thereon, placing and compacting unbonded particulate material about the pattern and supplying molten metal into the box so as to vaporize or burn away the pattern and form the article of defined shaped while applying a vacuum during casting. According to this invention, the method is improved by compacting the particulate material to a maximum bulk density where it contacts the coated pattern and applying a vacuum to the compacted particulate material so as to create sufficient pressure gradient in the height of the compacted material to maintain the integrity of the gas permeable refractory coating. In this way, the risk of mould collapse, metal breakout, and pollution are reduced.
摘要翻译：在模具箱中铸造金属制品的方法包括将一次性图案放置在盒子中，该图案在其上具有气体可渗透的耐火涂层，在该图案周围放置和压实未粘合的颗粒材料并将熔融金属供应到箱中以便蒸发或者在铸造过程中施加真空时烧掉图案并形成限定成形的制品。根据本发明，通过将颗粒材料压实至最大堆积密度，其中其与涂覆图案接触并向压实的颗粒材料施加真空，从而在压实材料的高度上产生足够的压力梯度以维持透气性耐火涂层的完整性。这样就可以减少模具倒塌，金属破裂和污染的风险。

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