Petro—Forge 高速锻锤包括一台内燃发动机和一个高速锤。锤头是靠作用在活塞下端面上的压缩空气(1.5～3公斤/厘米~2)力量(反压力)而保持在上部位置的(见图1a)。这时,活塞的上端面封闭了气缸和燃烧室之间的通气孔,活塞端面积是通气孔截面积的 n 倍(n=6～10)。因此,当燃烧室内工作压力超过反压力值 n 倍时,通气孔就开启。受燃烧物作用的活塞端面急剧运动,于是活塞与锤头在工作行程方向上得到了很大的加速度。当活塞位于上部位置时,1.5—9个绝对大气压(充气压力)通过进气阀进入燃烧室。然 The Petro-Forge high speed hammer includes an internal combustion engine and a high speed hammer. The hammerhead is held in the upper position by compressed air (1.5 to 3 kg / cm ~ 2) (counterpressure) acting on the lower end of the piston (see Figure 1a). At this time, the upper end surface of the piston closes the vent between the cylinder and the combustion chamber, and the area of ​​the piston end is n times larger than that of the vent (n = 6 to 10). Therefore, when the operating pressure in the combustion chamber exceeds n times the backpressure, the vent opens. Piston and hammerhead get a lot of acceleration in the working stroke direction due to the rapid movement of the piston end face affected by the combustion. When the piston is in the upper position, 1.5-9 atmospheres (inflation pressure) enter the combustion chamber through the intake valve. Of course