METHOD FOR MANUFACTURING PLUNGER PUMP AND PLUNGER PUMP

A method for manufacturing a plunger pump comprises: a temperature difference generation step for generating, with respect to one of an outer cylinder and an inner cylinder, a temperature difference from an ordinary temperature state; a cylinder insertion step for inserting the inner cylinder into the outer cylinder, the outer diameter of the inner cylinder being shorter than the inner diameter of the outer cylinder due to the temperature difference generated in the temperature difference generation step; a removal step for removing the generated temperature difference; and a plunger placing step for placing a cylindrical plunger in a compression chamber of the inner cylinder in a reciprocable manner. 柱塞泵的制造方法包括：温度差产生工序，在温度差产生工序中，使外侧气缸和内侧气缸中的任一方从常温状态产生温度差；气缸插入工序，在气缸插入工序中，将因通过温度差产生工序产生的温度差而外径比外侧气缸的内径短的状态的内侧气缸，插入外侧气缸的内侧；去除工序，在去除工序中，去除所产生的温度差；以及柱塞配置工序，在柱塞配置工序中，在内侧气缸的加压室以能够往复运动的方式配置圆筒状的柱塞。