The application of rotomolding molds brings many advantages to the automotive manufacturing industry

05-10-2022

In general, the application of rotomolding molds in automotive applications has started to develop from ordinary decorative parts to structural and functional parts; materials to higher strength, better impact, ultra-high flow of composite materials and mold alloys.


In recent years, the development of rotomolding mold innovation, guide the new revolution of automobile manufacturing, the application of rotomolding mold to the automotive manufacturing industry to bring many advantages:


First, the mold molding is easy, making the processing of complex-shaped parts very convenient.


For example, if the instrument panel is processed by steel plate, it is often necessary to process and shape each part first, and then assemble or weld it by connecting parts respectively, which is a more complicated process.


But the use of mold can be formed in one time, processing time is short, precision is guaranteed.


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Second, the greater advantage of automotive material application mold is to reduce the weight of the car body.


Lightweight is the automotive industry to pursue the goal, rotomolding mold in this regard can be a big show.


The general specific gravity is 0.9~1.5, and the specific gravity of fiber-reinforced composites will not exceed 2.


In contrast, the specific gravity of A3 steel is 7.6, brass is 8.4, aluminum is 2.7.


This makes the mold an excellent material for automotive lightweighting.


Third, the elastic deformation characteristics can absorb a large amount of collision energy, a large cushioning effect on strong impact, the vehicle and passengers to play a protective role.


Therefore, plasticized instrument panels and steering wheels are used on modern cars to enhance the cushioning effect.


Front and rear bumpers and body trim strips are made of molded materials to reduce the impact of objects outside the car on the body.


In addition, rotomolding molds also have the role of absorbing and attenuating vibration and noise, which can improve the comfort of the ride.


Fourth, adapt to the requirements of different parts on the car use


According to the organizational composition of the mold, by adding different fillers, plasticizers and hardeners to make the required performance of the mold, and


Change the mechanical strength of the material and processing molding performance, in order to adapt to the requirements of different parts of the use of the car.


For example, the bumper should have considerable mechanical strength, while the cushion and backrest should be made of soft polyurethane foam.


Fifth, with strong corrosion resistance, local damage will not corrode.


And steel production once the paint is damaged or the prior anti-corrosion do not do well will be easy to rust corrosion.


Rotomolding mold to acid, alkali, salt and other corrosion resistance is much greater than the steel, if the mold to do body coverings, very suitable for use in the more polluted areas.


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