The question of why grease received such an unusual name βcannon fatβ is of interest not only to motorists, but also to history buffs. This viscous substance, familiar to many owners of domestic cars, has been used for decades to protect metal from corrosion. However, its origins are deeply rooted in the military past, and not in garage practice.
Modern drivers often argue about the advisability of using this product in the era of high-tech chemicals. Some people think cannon fat a relic of the past, while others cannot imagine preserving parts without it. To understand the true value of a material, it is necessary to understand its history and physical and chemical properties.
In this article we will study in detail the etymology of the name, analyze the composition of the substance and determine the scope of its application in the modern automotive industry. You will find out whether this product is truly effective in protecting underbody and hidden cavities of the body, or whether its time has passed forever.
Historical excursion: from gunpowder to transmission
The name of the material is directly related to artillery. In the 19th century, a special composition was used to preserve artillery barrels to prevent metal oxidation during long-term storage and transportation. This composition outwardly resembled melted fat, which gave rise to the popular name.
In a military context, a substance was needed that would not dry out in the sun and would not run off when the barrel was heated by shots. Cannon fat was ideal for these purposes due to its high adhesion and heat resistance. Later, the technology was adapted for the needs of civilian industry, including the maintenance of railway transport and military equipment.
With the advent of automobiles, the composition was modernized, but retained its historical name. During Soviet times, it became scarce, but incredibly popular among car enthusiasts, who valued it for its accessibility and effectiveness in harsh climatic conditions.
β οΈ Attention: the historical recipe could differ significantly from the modern one. In the past, natural animal fats were used, which became rancid over time, whereas today synthetic bases are used.
The evolution of the product went in parallel with the development of the chemical industry. If initially it was just thickened petroleum bitumen, then modern analogues are complex multi-component mixtures.
Chemical composition and physical properties
From a chemical point of view, classic cannon fat is a mixture petroleum oil and thickeners. The basis is viscous petroleum oils, which provide lubricating properties and elasticity. Ceresin or paraffin is most often used as a thickener, giving the product a characteristic dense consistency.
The most important component is anti-corrosion additives. They create an inert film on the metal surface that blocks the access of oxygen and moisture. Without these additives, the product would be an ordinary technical lubricant, unable to withstand aggressive environments.
The physical characteristics of the material allow it to maintain its properties over a wide temperature range. It does not crack in the cold and does not become too liquid when heated to +50...+60 degrees Celsius. This makes it a universal remedy for year-round use.
Accurate chemical analysis
In the classic composition, the oil content is about 55%, and the rest is ceresin and additives. Modern GOSTs allow variations depending on the manufacturer.
It is worth noting that different manufacturers may change the proportions of components, which affects the final stickiness and penetrating ability. Some brands contain solvents that evaporate after application, leaving a dry protective film.
Why exactly βlardβ: etymology and analogues**
The answer to the question of why cannon fat is called that lies in its visual similarity. The frozen mass has a yellowish or brownish tint and a dense, fatty structure, reminiscent of frozen animal fat. In everyday life, such substances were traditionally called βlardβ.
Interestingly, different languages have their own analogues of names. In English, the term "gun grease" is often used, which is more technical but less figurative. The Russian language, rich in metaphors, fixed precisely the βfatβ name.
There is also a version related to the production process. Previously, when cooking the composition, animal fats were used as an additive to increase stickiness, which made the product organically similar to edible lard. However, on a modern industrial scale, animal components are practically not used.
- π Visual similarity: The color and texture of the frozen mass resemble rendered fat.
- π Technological process: Historical use of fat additives in cooking.
- π£οΈ Folk etymology: the habit of calling any thick lubricant βgreaseβ or βointment.β
Thus, the name was fixed thanks to a combination of external features and historical traditions of word formation in the technical field.
Application in the car: where is it effective?
In the automotive industry, cannon lard has found wide application for conservation details. Its main task is to create a barrier between the metal and the environment. Most often it is used to treat the underbody of a car, sills and hidden body cavities.
Due to its high penetrating ability (especially in a heated state), the material flows into microcracks in the paintwork and joints of metal sheets. This allows you to protect the metal even in places where it is impossible to apply paint or primer.
It is especially important to use the product for old cars or cars stored outdoors. It effectively displaces moisture from hard-to-reach places, preventing the development of focal corrosion under a layer of rust.
βοΈ Where is the best place to use cannon lard?
However, it is worth remembering that the material is not a panacea. It should not be used on parts subject to extreme heat (such as brake calipers or exhaust systems) due to the risk of fire or dripping.
Advantages and disadvantages over analogues
Comparing cannon lard with modern anticorrosives, such as bitumen-based mastics or wax compositions, we can highlight a number of pros and cons. The main advantage is durability protective layer. If applied correctly, it can last for several years without needing to be renewed.
In addition, the material has excellent elasticity. Unlike bitumen mastics, which can crack over time, gun lard remains plastic, following the deformations of the body during vibration. This ensures continuity of the protective layer.
Among the disadvantages, the difficulty of application is often cited. The material requires preheating to a liquid state, which is not always convenient to do in a garage environment. It can also stain clothes and collect road dirt, forming an abrasive layer.
| Parameter | Cannon fat | Bitumen mastic | Wax anticorrosive |
|---|---|---|---|
| Service life | 3-5 years | 2-3 years | 1-2 years |
| Elasticity | High | Average | Low |
| Penetration | High | Low | Average |
| Difficulty of application | High (needs heating) | Average | Low |
The choice of a specific product depends on the condition of the car and its operating conditions. For new cars, waxes are often chosen, and for older cars, more viscous and durable compounds are chosen.
Application rules and safety precautions
The process of applying cannon lard requires compliance with certain rules. First of all, the surface must be thoroughly cleaned of dirt, loose rust and degreased. Otherwise, the protective layer will lie on the dust and will not perform its function.
The material must be heated in a water bath or using a hair dryer to a temperature of 60-80 degrees. In this state, it becomes fluid and easily penetrates the pores of the metal. The hot composition should be applied with a brush or a special sprayer.
β οΈ Attention: heating cannon lard over an open fire is strictly prohibited! This is a flammable product whose vapors may ignite.
When working, you must use personal protective equipment: gloves and a respirator. Vapors from heated petroleum products are toxic and prolonged inhalation can be harmful to health. Work should be carried out in a well-ventilated area.
To reheat small quantities, use an old tin can placed in a pan of boiling water. This is the safest heating method at home.
After application, the layer is allowed to cool and polymerize. Complete stabilization of properties occurs after 24 hours, so during this period it is advisable not to operate the car in aggressive conditions.
Myths and misconceptions about use**
There are many myths surrounding cannon fat. One of the most common is that it βchokesβ the metal and prevents breathing. In fact, metal does not breathe, and corrosion occurs precisely because of the access of oxygen and moisture, which this product blocks.
Another myth states that gun fat is washed off with water after the first wash. This is incorrect: properly applied and heated lard creates a hydrophobic film that plain water cannot wash off. To remove it, special solvents or alkaline compounds are required.
There is also an opinion that this material is suitable for lubricating wheel bearings. Cannon fat cannot be used in high-speed friction units, since it does not have the necessary anti-seize properties and can lead to jamming of the mechanism.
- β Myth: Grease causes corrosion under the film. Reality: Corrosion only occurs if the product is applied to dirt.
- β Myth: It freezes into ice in winter. Reality: The product remains flexible even at -30Β°C.
- β Myth: This is the best lubricant for all components. Reality: This is a preservative, not a multi-purpose lubricant.
Understanding the real properties of a material helps you avoid mistakes and effectively protect your car from rust for many years.
Gun lard is an effective car body preservative, but not a universal mechanical lubricant. Its strength is in protecting against moisture, not in reducing friction.
FAQ: Frequently asked questions
Can cannon lard be mixed with other lubricants?
It is not recommended to mix different types of lubricants, since chemical reactions between additives can lead to sedimentation or loss of properties. If you switch to another product, it is better to remove the old lubricant.
How to wash gun fat from clothes?
Regular washing won't help. First, you need to mechanically remove the excess, then treat the stain with Galosh gasoline or a special degreaser, and only then wash it with a large amount of powder.
Does cannon lard have an expiration date?
When stored in an airtight container at temperatures from -30 to +40 degrees, the product retains its properties for up to 5 years. However, over time, solvents can evaporate, making the mixture harder.
Will it protect against road salt?
Yes, a dense film of gun fat is an excellent barrier to salt solutions, preventing electrochemical corrosion of the metal in winter.