I. The use of PVD nano-coating in injection moulds

Injection moulds are more concerned about the poor durability because of high regulations. For example, the production of plastic containing glass fibre, very easy to damage the surface layer of the abrasive tool, or out of the mould must enhance the characteristics of wetting. pvd coating because of its unique wettability and high strength, can greatly improve the processing of the process encountered in the said problem.


Tin bronze is characterised by fast heat removal and a strength of "36-42 HRC" after heat treatment. Faster heat removal (three times faster than stainless steel sheet) means that injection moulding cycle times can be reduced and production volumes higher. Tin bronze is more expensive than normal plastic stainless steel sheet, so any damage, destruction or sharpening costs are high. As the strength is low, surface damage is a serious problem. Give full consideration to the strength and characteristics of tin bronze, coating enterprises very for tin bronze stamping moulds a set of sound PVD coating scheme TiN-BeCu, enhance the tin bronze surface wear resistance, in addition not easy to reduce the characteristics of its high heat transfer.

2, precision machinery manufacturing

Injection mould parts some raw material selection of ultra-low temperature quenching and some parts of the appearance of the structure has easy deformation characteristics, therefore, the choice of high-temperature solution of the PVD coating scheme is not suitable. In this kind of situation, CrNC is a good choice, CrNC chemical corrosion resistance is strong, and its strength is not less than HV2000, can cope with the plastic production and manufacture of the strength of the provisions of the injection mould is a good choice. The characteristics of precision machinery manufacturing inserts are small dimensional tolerances, the shape of the groove, to ensure that no deformation and the balance of the coating is not easy. Plating companies are well aware of the use of injection moulds, and they use CrNC plating to deal with the problem of abrasive damage for their customers.

3. High-speed multi-concave mould mass production of abrasives

Transparent plastic bottles are typical of high speed multi-concave mould mass production abrasives, and under high speed production conditions, the requirements for the surface layer are very high, such as high surface strength, polished to mirror glass, and excellent working ability of the mould, etc. Generally, manufacturers in Europe and the United States prefer to use MNP. Generally, manufacturers in Europe and the United States are willing to use Mirror-Gold PVD coating to improve the strength of the surface layer of the abrasives and to enhance the ability of wetting out the mould. Because of the high toughness of the PVD nano-coating and excellent wetting performance, thus can reduce the production cycle, improve efficiency.

4, containing glass fibre high damage abrasives

Today's automotive companies are trying to find ways not to jeopardise the safety, quality of the situation, continue to reduce the total weight of the car, and thus achieve the goal of fuel efficiency. Rubber products are lightweight and high compressive strength, is an excellent raw material for automotive parts. However, if you encounter the production of rubber products such as polyester plus glass fibre goods, no matter what kind of mould steel, the surface damage is very strong. In order to increase the service life, general car manufacturers in Europe and the United States want to choose PVD coating. Wuxi City, a large and medium-sized automotive parts abrasives and product manufacturers to understand the benefits of PVD nano-coating, all of its production of polyester automotive parts abrasives are selected PVD coating, which enhances the use of abrasives.

Second, the use of PVD coating in hardware moulds

In terms of hardware moulds, because the hardware industry generally must be in the metal material sheet punching machine, pleat bending forming and so on. Common stamping mould spare parts, such as punch stick, often with the raw materials being produced and processed friction. In order to increase its service life, the vast majority must be surface applied PVD coating.

1、Hardware stamping abrasives

Hardware stamping is based on the basic principle of cutting and punching hardware into different shapes. According to its production process, damage, plastic deformation and chipping are the principles of destruction, so the most ideal hardware mould must have high toughness and wear resistance. High strength ensures good abrasion resistance and good ductility means good chipping resistance.

According to the mould steel process performance limitations, such as common D2 raw materials, its strength exceeds HRC62, so the choice of TiCNPVD coating is a good way to enhance the surface wear resistance, such as titanium nitride PVD coating surface strength can be achieved to HV2400, to deal with the damage problem has the effect of immediate assistance. However, plastic deformation deformation must also be the strength of the base material to bear. Punching rod is a common abrasive tool for stamping moulds, and TiN-Mirror and TiCN plating are generally used.

2、Hardware forming abrasives

Excellent hardware tensile mould provisions of high strength, with excellent wetting performance of the surface layer. General cold steel can do HRc62, but stainless steel plate surface wetting degree is low, PVD nano-coating can consider the provisions of these two levels. TiCN is a very good Rashen coating, its strength can be done Hv3700, but the friction resistance is less than 0.2.

Third, the use of PVD nanocoatings in die castings

Die casting production standard is the most demanding, in the high temperature metal material water solution, according to the high working pressure injection, and the abrasive surface layer of the constant heat up and cold shrinkage, resulting in die casting of the use of the period is very short, in the production of manufacturing constantly have to repair the mould, maintenance maintenance. pvdTiAlN-F3 plating can deal with a part of die casting encountered difficult problems, but to increase the service life of the actual effect of the blade than the cnc to be Relative is not too good. Coating enterprises for this problem product development of PVD nano-coating before the solution of new technology applications, in the improvement of liquid metal sticking moulds and thermal cracking level has obtained a certain examination results.