The improvement of these properties is very limited and uneconomical by relying solely on the improvement and improvement of the matrix material, and through surface treatment technology, you can often get twice the result with half the effort, which is the reason why surface treatment technology has developed rapidly.. From the surface treatment method, it can be divided into: chemical method, physical method, physical chemical method and mechanical method. Although new processing technologies aimed at improving the surface performance of molds are constantly emerging, the main applications in mold manufacturing are nitriding, carburizing and hardened film deposition.
These surface properties refer to: wear resistance, corrosion resistance, friction coefficient, fatigue performance, etc. Because the nitriding technology can form a surface with excellent performance, and the nitriding process has a good coordination with the quenching process of the mold steel, at the same time, the nitriding temperature is low, no intense cooling is required after nitriding, and the deformation of the mold is extremely small, so the casting mold
The surface strengthening of the nitriding technology is earlier and widely used. The nitriding process includes gas nitriding, ion nitriding, liquid nitriding, etc.Surface treatment technology of casting mold: In addition to the reasonable cooperation of the matrix with sufficiently high strength and toughness, the surface performance of the mold is very important to the working performance China Medical Accessories Mould Suppliers and service life of the mold.
The surface treatment technology of the mold is a systematic engineering of changing the morphology, chemical composition, structure and stress state of the mold surface through surface coating, surface modification or composite treatment technology to obtain the required surface properties. In each nitriding method, there are several nitriding technologies, which can meet the requirements of different steel types and different workpieces
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