公开(公告)号：EP2551547B1

公开(公告)日：2017-10-11

申请号：EP11759257.6

申请日：2011-03-15

申请人： CHUO HATSUJO KABUSHIKI KAISHA

发明人： HIRATA Yuichi ,  UKEI Yoshitaka ,  SUZUKI Hidekazu

IPC分类号： F16F1/02 ,  B05D7/14 ,  C21D9/02 ,  C21D7/06 ,  B05D3/02 ,  C21D1/32

CPC分类号： C21D9/02 ,  B05D3/0218 ,  B05D3/0254 ,  B05D7/14 ,  C21D1/32 ,  C21D7/06 ,  F16F1/024 ,  F16F2226/02

公开(公告)号：EP2551547A1

公开(公告)日：2013-01-30

申请号：EP11759257.6

申请日：2011-03-15

申请人： Chuo Hatsujo Kabushiki Kaisha

发明人： HIRATA Yuichi ,  UKEI Yoshitaka ,  SUZUKI Hidekazu

IPC分类号： F16F1/02 ,  B05D7/14 ,  C21D9/02 ,  C21D7/06

CPC分类号： C21D9/02 ,  B05D3/0218 ,  B05D3/0254 ,  B05D7/14 ,  C21D1/32 ,  C21D7/06 ,  F16F1/024 ,  F16F2226/02

摘要： To provide a method for manufacturing a spring having a painted surface, the method being capable of reducing a time period required for performing a paint baking process and low temperature annealing process while performing these processes at the same time. This manufacturing method has a step of heating the spring to a predetermined temperature (S12) and a step of spraying paint onto a surface of the spring and baking the paint while cooling the heated spring in accordance with a predetermined cooling pattern (S 14, S16). The predetermined temperature in the heating step and the cooling pattern obtained in the painting step are set such that a predetermined low temperature annealing process is performed on the spring in the heating and painting steps.

公开(公告)号：EP2551360A1

公开(公告)日：2013-01-30

申请号：EP11759258.4

申请日：2011-03-15

申请人： Chuo Hatsujo Kabushiki Kaisha

发明人： HIRATA Yuichi ,  OGISO Hiroyuki ,  FUKATSU Atsushi

IPC分类号： C21D9/02 ,  C21D1/40 ,  H05B3/00

CPC分类号： C21D9/02 ,  C21D1/40 ,  H05B3/023 ,  H05B3/03

摘要： A method for heating the entire spring including the vicinities of electrodes by a single electrical heating process is provided. This method has a step of causing at least a pair of electrodes to make contact with a spring, and a step of electrically heating the spring by applying a voltage between the pair of electrodes contacting the spring. Each of the electrodes has a first part 18a having a first electric resistance value and a second part 20 having a second electric resistance value higher than the first electric resistance value. The second part 20 may have an electric resistance value approximately the same as that of the spring to be heated. When electrically heating the spring, the temperature of the second part is raised to approximately the same temperature as that of the spring, thereby heating the vicinities of the sections of the spring that come into contact with the electrodes.

摘要翻译： 提供了通过单次电加热来加热包括电极附近的整个弹簧的方法。 该方法具有使至少一对电极与弹簧接触的步骤，以及通过在接触弹簧的一对电极之间施加电压来电加热弹簧的步骤。 每个电极具有具有第一电阻值的第一部分18a和具有高于第一电阻值的第二电阻值的第二部分20。 第二部分20可以具有与要加热的弹簧大致相同的电阻值。 当电加热弹簧时，将第二部分的温度升高到与弹簧的温度大致相同的温度，从而加热与电极接触的弹簧部分的附近。