Explosion hardening method for high manganese steel frog

The invention relates to an explosion hardening method for a high manganese steel frog. An explosion tank is integrally in a hemispherical closed shape, cement reinforcing walls are designed on the periphery of the explosion tank, railway ballast with a certain thickness is laid on the ground in the explosion tank, a workbench is arranged on the railway ballast, an explosion tank channel is opposite to the workbench, a walking device is arranged on the explosion tank channel, and spring doors are arranged on the two sides of the explosion tank. The energy absorption wall directly faces the spring door, and the exhaust valve or the smoke exhaust pipe is arranged at the top of the explosion tank. The method comprises the following steps: rolling explosives according to process requirements; the walking device moves to the outside of the explosion tank, and the frog is placed on the upper surface of the hoisting tool; cleaning the pre-explosion surface of the frog; laying explosives; the walking device moves int