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Pvd Coating In Hardware Moulds

Views: 48     Author: Site Editor     Publish Time: 2022-08-22      Origin: Site

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"Mould is the emperor of the metal processing industry" this sentence is the international mold association experts believe, and the basis of the mold industry is also mold materials. But because the new mould materials are still difficult to meet the higher demand for moulds, in the market today the field of materials science and engineering is more active and rapidly developing branch. Surface engineering has a wide range of properties, comprehensive discipline, diversity of means, extensive functionality, potential innovation, environmental protection, strong practicality and great efficiency, so it is valued by many industries. The application of surface engineering technology in the field of mould manufacturing has largely compensated for the lack of mould materials.

 

If the reasonable use of mould surface treatment technology, can use a lower process cost to make the mould life increased 5 to 10 times or even dozens of times, the economic benefits are very obvious. At present, a variety of mould surface treatment technology is getting more and more attention in the industry and the promotion of application. The main purpose of the mould surface treatment is to improve the surface hardness, wear resistance and corrosion resistance, so as to improve the quality of mould products and extend the service life of the mould. Appropriate application of mould surface treatment technology to obtain a high precision mould surface is necessary to produce high precision products with good surface quality. Surface strengthening process cost is low, but the mould life can be increased by 5-10 times Reasonable application of mould surface treatment technology, can be lower process cost to make the mould life increased by 5-10 times or even dozens of times, the economic benefits are very significant.

 

For hardware moulds, as the hardware industry generally requires punching, bending and forming on thin metal sheets, etc. Commonly used punching accessories such as punching bars, often rub against the material being processed. In order to prolong their service life, most of them require PVD coating on the surface.

 

1. Hardware stamping dies

Hardware stamping is the process by which thin sheets of hardware are punched into different shapes by means of the shearing principle. Depending on the process, wear and tear, plastic deformation and

Therefore, the ideal stamping tool must have both high hardness and high toughness. High hardness ensures good resistance to wear, and good toughness means good resistance to chipping.

Due to the physical limitations of tool steels, such as the commonly used D2 material, which has a hardness in excess of HRC 62, the use of TCN

PVD coatings are the best way to improve surface wear resistance, for example, titanium nitride PVD coatings with surface hardnesses up to HV2400 can be of direct help in solving wear problems. However, plastic deformation also needs the hardness of the substrate to take up the slack.

Punching bars are commonly used for stamping dies, which are generally coated with TiN-Mirror and TiCN.


2. Hardware forming dies

Good hardware drawing dies require high hardness combined with a surface with good lubrication properties. General cold work steel can reach HRC62

TiCN is a good tensile coating, its hardness can reach HV3700, but the friction coefficient can be lower than 0.2.

 

 


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