High thermal conductivity copper alloy mould manufacturing plant can have higher production efficiency, both to save money, but also improve product quality. Some car bumpers and instrument panels manufacturing companies have used this kind of material the mould and has achieved significant production efficiency.

With the normal industrial / die steel compared to copper-based alloys due to the high cost of production in the mould, therefore, a lot of mould factory has yet to find a better way to make a rational use of high thermal conductivity copper alloy materials, But in fact, the use of high thermal conductivity of copper alloys to save time and efficiency benefits of such areas is very significant.

In this paper to explore the high thermal conductivity copper alloy is a copper-based materials, alloys and manufacturing techniques by the method of combining, it is necessary to keep copper inherent characteristics of the high thermal conductivity, but also it has a certain hardness to be able to let in a production environment for a variety of processing conditions.

The main advantage of copper alloy

In the injection mould in the use of high thermal conductivity of copper alloys include the following special advantages:

A, thermal diffusivity properties

Plastic in the mould of the injection moulding process, the high thermal conductivity copper alloy will absorb a large amount of heat, of course, its initial absorption of heat is a key factor, while the latter will rely mainly on thermal cooling system. In each plastic injection process, heat is absorbed the initial rate of high thermal conductivity copper alloy to play a role in a real place.

2, polished performance

In contact with plastic packaging used in the production process of high thermal conductivity copper alloy moulds, its excellent polishing performance has been proven in practice. In a highly polished high thermal conductivity copper alloy inserts in the future, you can create high-quality transparent plastic packaging, to meet the inspection through the packaging production needs.

Practice has proved that this inserts polished steel inserts longer than the time required to finish four times faster, work cycle, but it can reduce 57%.

3, coating

In order to improve the wear resistance, high thermal conductivity copper alloy surface can be easily coated with a layer of non-plated nickel coating, hard chrome coating, PVD coating (physical vapor deposition layer), or CVD coating (chemical vapor deposition layer), so that the hardness of the surface coating to achieve 60 ~ 90 HRC.

Non-plated nickel coating can make uniform the thickness of the coating to penetrate into every hole, but its essence is not as galvanizing process, as is also not as hard as chrome plating process.

In order to facilitate the plastic mould release, non-plated nickel coating with PTFE (PTFE) or a combination of boron nitride materials. PTFE or boron nitride coated with non-plated nickel coating the surface of the mould parts are very smooth as if coated Feizao Mo in general, it will not make already-formed plastic pieces glued to the mould, the mould release very easily.

Of course, the use of high thermal conductivity copper alloy moulds, there are some limitations, such as eliminating stress or annealing (the only way to maintain the hardness of the material characteristics) should be placed in a long time to avoid mould temperatures above 900 F being.

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