| 摘要 |
<p>Provided is a method where it is possible through one electrical heating to heat a whole spring, including the vicinity of the electrodes. The method has a step wherein the spring comes in contact with at least one pair of electrodes, and a step for electrically heating the spring by applying voltage in between the pair of electrodes with which the spring has come in contact. The electrodes have a first part (18a) that has a first electrical resistivity, and also have a second part (20), which has a second electrical resistivity that is higher than the first electrical resistivity. The second part (20) has approximately the same level of electrical resistivity as that of the spring that will be heated. When electrically heated, the second part is heated to approximately the same temperature as the spring; hence, the electrodes of the spring and the area in contact with the electrodes also increase in temperature.</p> |
