Work environment：temperature 0℃~45℃，the relative humidity is no more than 90%.
Cylinder working pressure (air pressure):0.5MPa~0.7MPa
Mold material:cutting edge,concave mold is cr12,the rest is 45# steel or Q235 steel.
Heat treatment requirement:cutting edge,concave mold HRC58~62
Surface roughness requirements of mold:cutting edge Ra≤0.8,others Ra≤3.2