Steel-choosing→Blanking →Forging Steel →Rough Processing →Heat treatment →Finishing→Testing
Steel-making by medium frequency furnace
Nanxia company can meet special requirements for materials. In order to guarantee the qualit, the company imported the spectrometer from Germany and is equipped with various testers, such as tensile tester, impact testing machine, metallography analyzer and so on.
Electro slag remelting
The largest ingot can reach 3 tons in the company. The ingot obtained by this remelting/refining process is very homogeneous and free of internal defects. The segregation of the ingot (called macro-segregations ) are substantially eliminated and the segregations of crystals (called macro-segregations ) are significantly reduced.
The ESR remelted material improve following mechanical characteristics:
Improved toughness due to increased homogeneity and isotropy
Improved creep resistance properties
Best fatigue strength and tenacity properties as well as outstanding tensile strength
Improved purity
Forging steel
The largest electro-hydraulic hammer is 4.5 ton. And more than 6 skilled technicians work for us. After forging, the inside
microstructure becomes much closer and the metal grain size becomes much smaller. It can evevate the characteristics and quality of the knife ensuring a longer life.