-
公开(公告)号：US4186039A
公开(公告)日：1980-01-29
申请号：US852332
申请日：1977-11-17
CPC分类号： C21D9/02
摘要： In a method of treating a coil spring to improve its performance and reliability when operating at elevated temperatures, the spring is first stressed by applying a load of preselected magnitude and then, while the load is maintained, the spring is heated until it relaxes or collapses to a predetermined extent at which stage the heating is automatically discontinued and the applied load is afterwards removed. Apparatus for carrying out the method in relation to compression springs includes a spring supporting base, an overhead operating head with a vertically movable ram or plunger for applying the predetermined load, means for passing an electric heating current through each spring while beneath the operating head, and limit switch means which responds to the position of the ram or plunger and terminates the supply of heating current when the loaded spring has reached the required predetermined value of relaxation or collapse. The apparatus may also include means for carrying out a preliminary cold pressing of the springs before the hot pressing operation.
摘要翻译： 在处理螺旋弹簧以提高其在升高的温度下操作时的性能和可靠性的方法中，首先通过施加预选量级的载荷来应力弹簧，然后在保持负载的同时，加热弹簧直到其松弛或塌陷 到预定的程度，在该阶段加热被自动停止并且施加的负载被随后去除。 用于执行与压缩弹簧相关的方法的装置包括弹簧支撑底座，具有用于施加预定负载的可垂直运动的冲头或柱塞的顶部操作头，用于使电加热电流通过每个弹簧而在操作头下方的装置， 以及限制开关装置，其响应于冲头或柱塞的位置，并且当加载的弹簧达到所需的预定松弛或塌陷值时终止加热电流的供应。 该装置还可以包括用于在热压操作之前进行弹簧的初步冷压的装置。
-
公开(公告)号：US4245819A
公开(公告)日：1981-01-20
申请号：US34056
申请日：1979-04-27
CPC分类号： C21D9/02
摘要： In a method of treating a coil spring to improve its performance and reliability when operating at elevated temperatures, the spring is first stressed by applying a load of preselected magnitude and then, while the load is maintained, the spring is heated until it relaxes or collapses to a predetermined extent at which stage the heating is automatically discontinued and the applied load is afterwards removed. Apparatus for carrying out the method in relation to compression springs includes a spring supporting base, an overhead operating head with a vertically movable ram or plunger for applying the predetermined load, means for passing an electric heating current through each spring while beneath the operating head, and limit switch means which responds to the position of the ram or plunger and terminates the supply of heating current when the loaded spring has reached the required predetermined value of relaxation or collapse. The apparatus may also include means for carrying out a preliminary cold pressing of the springs before the hot pressing operation.
摘要翻译： 在处理螺旋弹簧以提高其在升高的温度下操作时的性能和可靠性的方法中，首先通过施加预选量级的载荷来应力弹簧，然后在保持负载的同时，加热弹簧直到其松弛或塌陷 到预定的程度，在该阶段加热被自动停止并且施加的负载被随后去除。 用于执行与压缩弹簧相关的方法的装置包括弹簧支撑底座，具有用于施加预定负载的可垂直运动的冲头或柱塞的顶部操作头，用于使电加热电流通过每个弹簧而在操作头下方的装置， 以及限制开关装置，其响应于冲头或柱塞的位置，并且当加载的弹簧达到所需的预定松弛或塌陷值时终止加热电流的供应。 该装置还可以包括用于在热压操作之前进行弹簧的初步冷压的装置。
-
搜索结果
2 条记录 (耗时 0.017 秒)
