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​Why do some cars look cheap? Does it cost a lot to make the car look exquisite?
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​Why do some cars look cheap? Does it cost a lot to make the car look exquisite?

Views: 15     Author: Site Editor     Publish Time: 2019-04-12      Origin: www.fuchun-casting.com

Why do some cars look cheap? Does it cost a lot to make the car look exquisite?


There have been huge developments in the field of science and technology in the past few decades.With the introduction of hybrid, full electric, and even hydrogen vehicles, our vehicles will continue to get more complex. That trend doesn’t seem to be slowing down anytime soon. Like all other aspects of life, the processes in the automobile industry have been changed drastically through this development.


Limited to the category of cars, sometimes you can see the grade of a car at a glance. Why does it make such a big difference in appearance? Does exquisite appearance of a car add a lot of cost?


performance and appearance of the automobile

At first,we choose cars worth less than 50W as illustrative cases.

Why choose the car below 50W, generally speaking, the annual output of the car below 50W is usually higher, and the stamping accuracy of parts will become worse and worse under the high-speed and large-scale operation of automation line. The precision requirement of these models in the process of die making is very high, but also requires the die to have certain strength, stiffness and better robustness.On the contrary, due to the low output and stable stamping of high-end models, the die does not need to be debugged frequently in the production process, and it is slightly less difficult for manufacturing and workers to debug.

 

From personal experience, it is not always the better-looking car panels stamping will be more complex, many times the uglier car panels stamping will be more difficult.The appearance of automobile is determined by the appearance of the panel. In many cases, the internal shape determines the stamping difficulty of the panel and the manufacturing cost of the mould.

 

The manufacturing cost of the mould will not have a great impact on the appearance of the car. Personally, I think the inner size of the car is the main obstacle to restrict the aesthetic feeling of the car appearance.

 

In many cases, we can judge whether a car is high-end or not by its shape and size. From small cars, medium and high-grade cars to the best high-grade cars, the shape is getting bigger and bigger, and the wheelbase is getting wider and wider. The bigger the shape and the wider the wheelbase, the bigger the space of body design, and the more adjustable the matching relationship between parts.

 

Similarly, because joint ventures have a lot of design experience and a high level of industrial design, they can usually design more mature parts, i.e. beautiful exterior stamping with simpler panels.We often say that some of the ugly models are usually those smaller cars. Because of the overall cost of making the car, they have smaller dimensions. They can not extract the essence of design from high-end models well, which leads to a lot of ugly car appearance.


In addition to the appearance and size of the obstacles, there is also a personal feeling that the greater impact is the stamping material. 

The price of stamping materials may not vary much in unit price, but once the total number increases, the difference in total price will be particularly obvious.This difference in cost and overall technology leads to poor quality of materials used in low-end vehicles, high stamping difficulty and low precision of stamping dimension. Low-end vehicles often avoid some complex shapes and try to use simple lines and smooth surfaces when they design after many losses. In this state, the appearance of the car is easy to cause rigidity, lack of vitality and single lines.


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FAQS

  • What is 'multiple certification'?

    This is where a batch of steel meets more than one specification or grade. It is a way of allowing melting shops to produce stainless steel more efficiently by restricting the number of different types of steel. The chemical composition and mechanical properties of the steel can meet more than one grade within the same standard or across a number of standards. This also allows stockholders to minimise stock levels.

    For example, it is common for 1.4401 and 1.4404 (316 and 316L) to be dual certified - that is the carbon content is less than 0.030%. Steel certified to both European and US standards is also common.

  • What surface finishes are available on stainless steels?

    There are many different types of surface finish on stainless steel. Some of these originate from the mill but many are applied later during processing, for example polished, brushed, blasted, etched and coloured finishes.

    The importance of surface finish in determining the corrosion resistance of the stainless steel surface cannot be overemphasised. A rough surface finish can effectively lower the corrosion resistance to that of a lower grade of stainless steel.

  • Can I use stainless steel at high temperatures?

    Various types of stainless steel are used across the whole temperature range from ambient to 1100 deg C. The choice of grade depends on several factors:

    1. Maximum temperature of operation
    2. Time at temperature, cyclic nature of process
    3. Type of atmosphere, oxidising , reducing, sulphidising, carburising.
    4. Strength requirement

    In the European standards, a distinction is made between stainless steels and heat-resisting steels. However, this distinction is often blurred and it is useful to consider them as one range of steels.

    Increasing amounts of Chromium and silicon impart greater oxidation resistance. Increasing amounts of Nickel impart greater carburisation resistance.

  • Can I use stainless steel at low temperatures?

    Austenitic stainless steels are extensively used for service down to as low as liquid helium temperature (-269 deg C). This is largely due to the lack of a clearly defined transition from ductile to brittle fracture in impact toughness testing.

    Toughness is measured by impacting a small sample with a swinging hammer. The distance which the hammer swings after impact is a measure of the toughness. The shorter the distance, the tougher the steel as the energy of the hammer is absorbed by the sample. Toughness is measured in Joules (J). Minimum values of toughness are specified for different applications. A value of 40 J is regarded as reasonable for most service conditions.

    Steels with ferritic or martensitic structures show a sudden change from ductile (safe) to brittle (unsafe) fracture over a small temperature difference. Even the best of these steels show this behaviour at temperatures higher than -100 deg C and in many cases only just below zero.

    In contrast austenitic steels only show a gradual fall in the impact toughness value and are still well above 100 J at -196 deg C.

    Another factor in affecting the choice of steel at low temperature is the ability to resist transformation from austenite to martensite. 

  • Is stainless steel non-magnetic?

    It is commonly stated that “stainless steel is non-magnetic”. This is not strictly true and the real situation is rather more complicated. The degree of magnetic response or magnetic permeability is derived from the microstructure of the steel. A totally non-magnetic material has a relative magnetic permeability of 1. Austenitic structures are totally non-magnetic and so a 100% austenitic stainless steel would have a permeability of 1. In practice this is not achieved. There is always a small amount of ferrite and/or martensite in the steel and so permeability values are always above 1. Typical values for standard austenitic stainless steels can be in the order of 1.05 – 1.1. 

    It is possible for the magnetic permeability of austenitic steels to be changed during processing. For example, cold work and welding are liable to increase the amount of martensite and ferrite respectively in the steel. A familiar example is in a stainless steel sink where the flat drainer has little magnetic response whereas the pressed bowl has a higher response due to the formation of martensite particularly in the corners.

    In practical terms, austenitic stainless steels are used for “non-magnetic” applications, for example magnetic resonance imaging (MRI). In these cases, it is often necessary to agree a maximum magnetic permeability between customer and supplier. It can be as low as 1.004.

    Martensitic, ferritic, duplex and precipitation hardening steels are magnetic.

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