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    • 3. 发明授权
    • Flexible high frequency bar type heater
    • 柔性高频杆式加热器
    • US5919388A
    • 1999-07-06
    • US988386
    • 1997-12-10
    • Takayuki KawanoTakijiro Shimamoto
    • Takayuki KawanoTakijiro Shimamoto
    • H05B6/02H05B6/38H05B6/42
    • H05B6/105B23P19/068H05B6/365H05B6/38
    • A high frequency bar type heater can be inserted into a hole of an object to be heated even if there is an obstruction above the hole. The high frequency bar type heater has a flexible and slender heat resisting and insulating tube (2) having both its ends closed so as to form a water-tight container. A flexible and slender conductor coil (3) is inserted in the heat resisting and insulating tube (2). A magnetic core (5), sectioned in plural pieces in its longitudinal direction, is contained on an inner side of the conductor coil (3). A flexible cooling water pipe (6) is inserted in the heat resisting and insulating tube (2) so as to cool the interior thereof. The high frequency bar type heater thus has flexibility as a whole. The magnetic core may also be formed of a flexible material.
    • 即使在孔上方有障碍物,也可以将高频杆式加热器插入待加热物体的孔中。 高频杆式加热器具有柔性和细长的耐热和绝缘管(2),其两端封闭以形成防水容器。 柔性细长的导体线圈(3)插入耐热绝缘管(2)中。 在导体线圈(3)的内侧容纳有沿其长度方向分割成多个的磁芯(5)。 将柔性冷却水管(6)插入耐热绝缘管(2)中以冷却其内部。 因此,高频杆式加热器整体上具有灵活性。 磁芯也可以由柔性材料形成。
    • 4. 发明授权
    • High frequency heating coil device
    • 高频加热线圈装置
    • US6093917A
    • 2000-07-25
    • US186382
    • 1998-11-05
    • Takayuki KawanoTakijiro ShimamotoMasanori Terasaki
    • Takayuki KawanoTakijiro ShimamotoMasanori Terasaki
    • H05B6/36B23K13/01H05B6/38
    • B23P19/068B23K13/01C21D1/42C21D9/0068H05B6/38Y02P10/253
    • A high frequency heating coil device having sufficient flexibility and heating ability is provided. Coils 2 are contained in outer jacket 1. The coils 2 are made of steel, copper or brass tubing which is annealed sufficiently to be flexible. Plural pieces of magnetic substance 10 are arranged in series between the coils 2. Flexible spacer 9 is arranged between a magnetic substance 10 and the coils 2. Upper and lower end faces of each piece of the magnetic substance 10, make direct contact with other adjacent pieces, and are made with curved faces a. Heating coil device is so constructed that when inserted into a hole of an object to be heated and high frequency current is supplied to the coils to the coils 2 from electric source 6, eddy currents are generated in an inner surface of the hole in order to heat the object. The heating coil device, while being bent to avoid obstructions, can still be inserted into and drawn out of the hole.
    • 提供了具有足够的灵活性和加热能力的高频加热线圈装置。 线圈2包含在外护套1中。线圈2由钢,铜或黄铜管制成,其被充分退火以具有柔性。 多个磁性物质10串联在线圈2之间。柔性间隔件9布置在磁性物质10和线圈2之间。每个磁性物质10的上端和下端面与其他相邻的 零件,并用曲面a制成。 加热线圈装置的结构是,当插入到待加热物体的孔中,并且从电源6向线圈2向线圈2提供高频电流时,在孔的内表面产生涡流,以便 加热物体。 加热线圈装置在被弯曲以避免障碍物的同时仍然可以插入并从孔中排出。
    • 5. 发明授权
    • High frequency heating method of a bolt with hole
    • 螺栓孔高频加热方法
    • US5938964A
    • 1999-08-17
    • US18732
    • 1998-02-04
    • Katsuhiko TakitaTakayuki KawanoTakijiro ShimamotoKouichi Ide
    • Katsuhiko TakitaTakayuki KawanoTakijiro ShimamotoKouichi Ide
    • F16B31/04H05B6/06H05B6/10H05B6/38
    • B23P19/068H05B6/06H05B6/38
    • A high frequency heating method of a bolt sets a maximum achievable temperature Tmax in an inner surface of the bolt with hole to a value which is not higher than a final heat treated temperature To. A maximum thermal stress .sigma.max occurring in the bolt with hole is set to a value which is not more than a yield stress .sigma.ys of the bolt material. From the maximum thermal stress .sigma.max, a temperature difference .DELTA.T is obtained between Tmax and a mean temperature Tmean along an entire cross section of the bolt, under the condition that .DELTA.T is to be not more than a permissible maximum temperature difference .DELTA.To obtainable from the yield stress of the material. The maximum suppliable power by Tmax, .DELTA.T and dimensions of the bolt are obtained, and then a heater is inserted into a small diameter hole of the bolt with hole and the maximum suppliable power, which value is obtained by the above operation, is supplied to the heater so that the bolt with hole is heated to be elongated. The temperature of the bolt with hole, while it is being heated, is not higher than To, and hence lowering of the material strength can be prevented. The thermal stress is not higher than .sigma.ys, hence the life consumption due to fatigue can be suppressed and loosening of the bolt with hole within a short time becomes possible.
    • 螺栓的高频加热方法将具有孔的螺栓的内表面中的最大可实现温度Tmax设定为不高于最终热处理温度To的值。 在具有孔的螺栓中发生的最大热应力σmax被设定为不大于螺栓材料的屈服应力σys的值。 从最大热应力σmax,在T max和螺栓的整个横截面的T mean与平均温度Tmean之间获得温度差DELTA T,在DELTA T不得大于容许最大温差DELTA To 可从材料的屈服应力获得。 通过Tmax,DELTA T和螺栓的尺寸获得最大供应功率,然后将加热器插入具有孔的螺栓的小直径孔中,并且通过上述操作获得该最大供应功率,该值由上述操作获得 加热器,使得具有孔的螺栓被加热以被拉长。 在加热时,具有孔的螺栓的温度不高于To,因此可以防止材料强度的降低。 热应力不高于σys,因此可以抑制疲劳造成的寿命消耗,并且可以在短时间内松开具有孔的螺栓。
    • 7. 发明授权
    • High frequency bolt heater having induction heating coil
    • 高频螺栓加热器具有感应加热线圈
    • US5397876A
    • 1995-03-14
    • US177956
    • 1994-01-06
    • Takijiro ShimamotoYoji MoritaIchiro ShimasakiIchiro MatsuuraTsukasa Maenosono
    • Takijiro ShimamotoYoji MoritaIchiro ShimasakiIchiro MatsuuraTsukasa Maenosono
    • H05B6/10B23P19/06H05B6/14H05B6/38
    • H05B6/38B23P19/068H05B6/14
    • A high frequency bolt heater is provided which can heat up the inside of a narrow hole much faster than a conventional bolt heater employing a resistance wire. The high frequency bolt heater includes an induction heating coil made of a copper tube bent in a hairpin fashion and whose shape is made approximately circular in section by pinching a magnet between opposed portions thereof. The heater can be inserted into a hole bored in the axial direction of a metallic bolt. A length of the coil is made approximately equal with that of the bored hole, and the magnet is omitted from a region of the heater which corresponds to a screw portion of the bolt for mounting a nut. An adjustable stopper made of a heat resistant electrical insulator is provided for setting a necessary length of the induction heating coil to be inserted into the hole, and a heat resistant insulator is provided on the surface of the induction heating coil.
    • 提供了一种高频螺栓加热器,其可以比使用电阻丝的常规螺栓加热器更快地加热狭窄孔的内部。 高频螺栓加热器包括由发夹弯曲的铜管制成的感应加热线圈,并且其形状通过在其相对部分之间夹住磁体而形成为大致圆形截面。 加热器可以插入在金属螺栓的轴向上钻孔的孔中。 线圈的长度大致与钻孔的长度相等,并且从对应于用于安装螺母的螺栓的螺纹部分的加热器的区域中省略磁体。 提供由耐热电绝缘体制成的可调式止动器,用于设定要插入孔中的感应加热线圈的必要长度,并且在感应加热线圈的表面上设置耐热绝缘体。