The middle pressure steam transformation of the setting machine is a reciprocating power machine which converts the energy of steam into mechanical work. The advent of the steam engine led to the industrial revolution in the 18th century. It remained the world's more important prime mover until the early 20th century, when it gradually gave way to internal combustion engines and steam turbines. A steam engine needs a boiler that boils water to produce high-pressure steam. This boiler can use wood, coal, oil or natural gas or even garbage as a heat source. Steam expansion pushes on the piston to do work.

Purpose of vertical molding machine medium-pressure steam modification:

1. The transformation of steam engine promoted the development of machinery industry and even society, solved the key problems in the production of big machines, and promoted the rapid progress of transportation.

2. The thermodynamics and mechanism established with its development laid a foundation for the development of steam turbine and internal combustion engine.

3. Steam turbine inherits the characteristics of steam engine with steam as working medium, and adopts condenser to reduce exhaust steam pressure, and eliminates the disadvantages of reciprocating movement and intermittent steam intake;

4. The internal combustion engine inherits the basic structure and transmission form of the steam engine and adopts the way of directly feeding fuel oil into the cylinder for combustion, thus forming a thermal cycle with much higher thermal efficiency.

5. At the same time, the cylinder, piston, flywheel, flyhammer governor, valves and seals used by steam engines are the basic components of a variety of modern machinery.