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    • 4. 发明公开
    • METHOD FOR PRODUCING HEAT-RECOVERABLE ARTICLES AND APPARATUS FOR EXPANDING/SHRINKING ARTICLES
    • 用于生产热可逆文章的方法和用于扩展/收缩文章的装置
    • EP0581861A4
    • 1994-08-24
    • EP92911191
    • 1992-04-24
    • METCAL INC
    • MCGAFFIGAN THOMAS H
    • H05B6/00B29C35/02B29C35/08B29C55/22B29C61/06B29C61/08B29L23/00H05B6/02H05B6/10
    • B29C61/08B29C35/0272B29C35/08B29C55/22B29C2035/0816B29K2105/16B29K2995/0008H05B6/106H05B2206/023
    • A method of producing a heat-recoverable plastic article such as a tube (1) by deforming the article from a heat-stable configuration (1a) to a heat-unstable configuration (1b). The heat-unstable configuration will return to the heat-stable configuration when the article is heated to above the heat recovery temperature. The article is heated such that the article is at a temperature no lower than the heat recovery temperature during the deforming step by lossy particles (2) dispersed in the article or in a tool (4) used in the deforming step. The lossy particles allow auto-regulated heating of the article since the particles cannot be heated beyond their Curie transition temperature when subjected to an alternating magnetic field. These particles are preferably ferrites. Alternatively, the tool can include a braided mesh tubing (12) of a ferromagnetic alloy wire. The article is cooled in the heat-unstable configuration to a temperature below the heat recovery temperature while preventing the article from returning to the heat-stable configuration. The tool can be a mandrel (8), expandable tube (10) or caterpillar (4).
    • 一种用于通过使制品从热稳定构型变形成热不稳定构造来制造诸如管的可热恢复塑料制品​​的装置。 当制品被加热到高于热回收温度时,热不稳定构型将返回到热稳定构型。 加热制品,使得制品在变形步骤中的温度不低于分散在制品中的有害颗粒或变形步骤中使用的工具中的热回收温度。 有损的颗粒允许自动调节制品的加热,因为当经受交变磁场时,颗粒不能被加热超过其居里转变温度。 这些颗粒优选为铁氧体。 或者,该工具可以包括铁磁合金线的编织网管。 制品在热不稳定构型下冷却到低于热回收温度的温度,同时防止制品返回到热稳定构型。 该工具可以是心轴,可扩张管或毛毛虫。
    • 9. 发明公开
    • Rivet with integral heater
    • Bolzen mit integriertemHeizgerät。
    • EP0372704A1
    • 1990-06-13
    • EP89311037.9
    • 1989-10-26
    • METCAL INC.
    • Derbyshire, Rodney L.
    • F16B5/04F16B19/04
    • F16B19/008F16B19/1054
    • A blind rivet or bolt is rendered fluid tight by applying heat activated sealant (30, 32) to some or all of the surfaces of the rivet that contact surfaces of the structure into which the rivet is inserted. The sealant (30, 32) is activated by a temperature self regulating heater formed by applying ferromagnetic material (38) to appropriate locations on the rivet and heating the ferromagnetic material (38) by an energizing structure associated with the rivet actuation tool, the structure depending upon whether the heater is activated by flux coupling from a coil (44) or by ohmic heating.
    • 通过将热活化的密封剂(30,32)施加到接触铆钉插入的结构的表面的铆钉的一些或所有表面上,使盲铆钉或螺栓变得流体密封。 密封剂(30,32)由温度自调节加热器激活,该加热器通过将铁磁材料(38)施加到铆钉上的适当位置并通过与铆钉致动工具相关联的激励结构加热铁磁材料(38)而形成,该结构 这取决于加热器是否由来自线圈(44)的磁通耦合或欧姆加热激活。