Dry Film Lubricant-Innovative Technology Helps the Development of Fasteners in the Automotive Industry

Release time:

2021-08-10

Steady: Kolitmo Dry Film Lubricant-Innovative Technology Helps the Development of Fasteners in the Automotive Industry

　Question 1: Why do automotive industry fasteners use dry film lubricants, and what are its advantages?

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The assembly quality of auto parts affects the performance and durability of the vehicle, as well as some joints and even the safety of the structure.

Therefore, the automotive industry has set strict control standards for the friction coefficient of the fasteners used. According to the VDA 235-101 standard formulated by the German Automobile Industry Association (Verband der Automobilindustrie e.V.), the friction coefficient of threaded fasteners used in the general automobile industry ranges from μtot 0.09 to 0.14?. This standard has become an important reference for automobile manufacturers in various countries when drawing up production standards for their own enterprise systems. Thus, the μtot 0.09 to 0.14? has also become a commonly used range value for the coefficient of friction in the automotive industry, with an allowable deviation of usually ± 0.03.

So, how to achieve the set range of fastener friction coefficient values to meet the preset assembly torque? The VDA 235-101 standard further recommends that a dry film lubricant with good adhesion can be used to achieve the desired goal of friction coefficient value. It can be seen that the application of "dry lubrication technology" to control the friction coefficient of automotive fasteners has been widely verified in the automotive industry and plays a key role.

The special formula and technology can stabilize the friction coefficient at a very small deviation value while providing excellent lubrication performance. Because the generated lubricating film is clean and extremely thin, it is not easy to cause contamination during assembly of components, and will not affect tolerances. It meets the requirements of the automotive industry and is widely designated and recommended by internationally renowned car manufacturers and automotive fastener manufacturers. Series products.

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In recent years, the domestic automobile manufacturing industry has vigorously developed the concept of intelligent factory, and the enthusiasm of automobile manufacturing plants and whole machine factories for upgrading intelligent assembly technology has only increased. The use of dry film lubricant, the friction coefficient of vehicle fasteners more accurate and stable control within the design range, in order to further meet the automatic tightening and intelligent assembly increasingly stringent trend development.

　Q2: It is understood that GLEITMO 2332 V super-temperature resistant dry film lubricant is very popular with international automobile manufacturers. Can you introduce this dry film lubricant in detail?

GLEITMO 2332 V is an excellent ultra-high temperature resistant dry film lubricant product, which provides outstanding lubrication performance through the synergy between special compound solid lubricating components.

As we all know, the fasteners used in the high-temperature working service area of the car must not only meet the parameter control during assembly, but also sometimes have the performance of heat resistance and high temperature resistance. The GLEITMO 2332 V meets the requirements of the friction coefficient of fasteners set by the German Automobile Industry Association standard, and the performance of the friction coefficient control is quite good. It is suitable for pre-coating lubrication of various light alloy and steel parts.

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In addition, the high-performance dry film coating constructed by its specially selected solid lubrication formula can make the fastener surface maintain a considerable degree of stability even in high or low temperature environments. The lubricating dry film GLEITMO 2332 V has a temperature resistance of up to 1200°C, which can effectively prevent the fastener from seizing due to heat, strengthen the service life of the fastener in high temperature environment and meet the detachable requirements.

With the rapid increase in the demand for high-temperature lubricating coatings for fasteners in the automobile industry, "GLEITMO 2332 V ultra-high temperature dry film lubricant" has won the favor of many international automobile manufacturers and has been successfully used in stainless steel fasteners for automobile exhaust systems, high-temperature alloy steel bolts for automobile engines, and other related projects of power assembly systems.

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　　Q3: What do you think of the future development trends and prospects of dry film lubricants in the automotive industry fasteners?

This can be seen in two ways.

　1. Development and challenges of lightweight fastener materials

Driven by the increasingly stringent global vehicle emission regulations, benchmark car manufacturers at home and abroad are actively developing lightweight car bodies to improve the fuel economy of automobiles.

Relevant research points out that for every 100kg weight loss of traditional fuel vehicles, fuel consumption per 100km can be reduced by 0.3-0.6 litres. On the other hand, in order to meet the market demand for vehicle endurance, the rapidly developing new energy vehicle field also needs to invest in lightweight technology research. For every 100kg reduction in the overall weight of new energy vehicles, the cruising range can be increased by about 6-11%, and the battery cost and daily loss cost can be reduced by about 20%.

Under the trend of vehicle lightweight, the overall development towards lightweight is in an unstoppable stage. General Manager Wenli Chen said, "In recent years, more and more lightweight materials and composites such as aluminum alloys and titanium alloys have been used in automotive design and manufacturing, making the variation of the coefficient of friction more complex. Additional negative factors, such as unexpected cold welding and seizure of threads during fastener assembly, often occur in alloy fasteners that have not been treated with dry film lubrication, which may pose a serious risk to assembly quality."

"Dry lubricating wax" in addition to effectively reduce and stabilize the friction coefficient of vehicle fasteners, but also can significantly improve the alloy material because of the material characteristics in the fastening process of the seizure problem, known as "alloy fasteners to prevent seizure of the secret weapon". What is more worth mentioning is that since the lubricating film is covered on the fastener in advance, there is no need to worry about the temporary seizure of the fastener during assembly, and there is no need to apply anti-card paste, so it can fully realize the high efficiency and continuity of the intelligent production line.

　2. Application of high temperature resistant dry film lubricant

Wenli also observed that the automotive industry's pursuit of improved vehicle performance has led to an increasing demand for high-temperature surface treatment of fasteners.

In the development and design of the powertrain system, we are constantly pursuing the improvement of power density to continuously improve performance and strengthen competitiveness. The problems of increased pressure and temperature rise accompanied by high power density also bring more severe tests to the fasteners serving in this part. Therefore, the automotive industry for heat-resistant fasteners and fasteners high temperature surface treatment requirements are also getting higher and higher.

　　
Reprint source: golden spider fastener web.