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模具表面的处理技术!

来源:http://www.jnhjgs.cn     发布时间:2021-04-28 10:55:12    点击:

模具的表面处理技术,是通过表面涂覆、表面改性或复合处理技术,改变模具表面的形态、化学成分、组织结构和应力状态,以获得所需表面性能的系统工程。从表面处理的方式上,又可分为:化学方法、物理方法、物理化学方法和机械方法。虽然旨在提高模具表面性能新的处理技术不断涌现,但在塑料模具制作中,应用较多的主要的渗氮、渗碳和硬化膜沉积。
The surface treatment technology of mould is a system engineering that changes the surface morphology, chemical composition, microstructure and stress state of mould through surface coating, surface modification or composite treatment technology to obtain the required surface properties. From the way of surface treatment, it can be divided into chemical method, physical method, physical chemical method and mechanical method. Although new treatment technologies are emerging to improve the surface properties of moulds, nitriding, carburizing and hardening film deposition are widely used in the production of plastic moulds.
1、渗氮
1. Nitriding
渗氮工艺有气体渗氮、离子渗氮和液体渗氮等方式。每一种渗氮方式中,都有若干种渗氮技术,可以适应不同钢种、不同工件的要求。由于渗氮技术可以形成优良性能的表面,并且渗氮工艺与模具钢的淬火工艺有良好的协调,同时,渗氮温度低,渗氮后不需激烈冷却,模具的变形很小,因此,模具的表面强化是采用渗氮技术较早,也是应用很广泛的。
Nitriding process includes gas nitriding, ion nitriding and liquid nitriding. In each nitriding method, there are several nitriding technologies, which can meet the requirements of different steel grades and different workpieces. Because nitriding technology can form excellent performance surface, and nitriding process and die steel quenching process have good coordination, at the same time, nitriding temperature is low, after nitriding does not need intense cooling, die deformation is very small, therefore, nitriding technology is used earlier, and it is also widely used.
                                 山东模具
2、渗碳
2. Carburizing
模具渗碳的目的,主要是为了提高模具的整体强韧性,即模具的工作表面具有高的强度和耐磨性。由此引入的技术思路是,用较低级的材料,即通过渗碳淬火来代替较高 级别的材料,从而降低制造成本。
The purpose of mold carburizing is to improve the overall strength and toughness of the mold, that is, the working surface of the mold has high strength and wear resistance. The technical idea is to use lower grade materials, that is, to replace higher grade materials by carburizing and quenching, so as to reduce the manufacturing cost.
3、硬化膜沉积
3. Hardening film deposition
硬化膜沉积技术,目前较成熟的是CVD和PVD。为了增加膜层与工件表面的结合强度,现在发展了多种增强型CVD、PVD技术。
At present, CVD and PVD are the mature deposition technologies of hardened film. In order to increase the bonding strength between the film and the workpiece surface, a variety of enhanced CVD and PVD technologies have been developed.
硬化膜沉积技术早在工具(刀具、刃具、量具等)上应用,效果佳,多种刀具已将涂覆硬化膜作为标准工艺。
Hardening film deposition technology has been used in tools (cutting tools, cutting tools, measuring tools, etc.) for a long time, and the effect is good.
通过表面处理技术,模具的耐磨损性能、耐腐蚀性能、摩擦系数、疲劳性能等有大幅度的提高,从而也提高了模具的寿命。从而达到为厂家节约成本的目的。
Through the surface treatment technology, the wear resistance, corrosion resistance, friction coefficient and fatigue performance of the die have been greatly improved, which also improves the life of the die. So as to achieve the purpose of cost saving for manufacturers.
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