Daily Archives: March 9, 2017

What Is The Synthetic Brake Fluid?

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Synthetic Brake Fluid is easily one of the most neglected fluids in most vehicles around the world. Manufacturers recommend that you change your brake fluid every 3 years. The Brake Fluid possesses lifesaving qualities yet people often check everything except the brake fluid.

 

So, in order to help understand the importance and to find the best brake fluid we will learn about the chemical properties and what is the purpose of brake fluid.

 

All Brake fluid is synthetic hydraulic fluid that helps apply pressure to the brake components.

 

Hydraulic fluids are the mediums used to transfer power throughout hydraulic components. Hydraulic fluids are known for transferring force into pressure which is how your foot applying pressure to your brakes stops your vehicle.

 

This is important because new brake fluid is incompressible, which helps apply quality pressure to the brake mechanism.

 

This is especially important for:

 

Those who commute long distances in warm weather. When brake fluid is overheated it puts your brake mechanism at risk. Once the brake fluid begins boiling the fluid turns into a gas and makes the gas compressible. Leaving your brakes very soft and will lead to “cadence braking”.

 

Cadence braking is also referred to as stutter braking, meaning repeatedly pressing the brake to prevent the brakes from locking up.

 

Most modern vehicles have anti-lock brakes or “ABS” if there is no pressure in the brake lines this system will not provide too much assistance. There are a few braking techniques here.

 

Brake Fluid Types:

So as you may or may not notice there are 4 different types of brake fluids.

 

Viscosity Limit

 

The brake fluid grade comes from the different temperatures that the fluid maintains while it’s stable and the corrosion characteristics. There are more characteristics taken into consideration but we are going to just focus on those two.

 

Viscosity is important to those that have ABS systems because the pressure and volume of fluid is not transferred. This means manufacturer’s suggested viscosity is important to take into consideration.

 

DOT3

 

Is one of two brake fluids that are capable of absorbing water from the air. DOT3 is Glycol Ether Based. The benefit of using Glycol Ether is its high boiling point with a lower molecular weight. DOT3 is a very commonly used synthetic brake fluids because it is the most economical when it comes to meeting the government standards.

 

DOT4

 

Is the next brake fluid that can absorb water through the air, when handling both DOT3 & DOT4, it is important to limit the exposure to the air. Also you don’t to spill any of this on your car because of the chemical properties of the Glycol Ether.

 

Only open the brake fluid reservoir when necessary, make sure you seal the plastic bottle tightly. DOT4 has a high stability and a high boiling point when it’s new.

 

If, water is absorbed into DOT4 the boiling point drops rapidly, even more than DOT3. DOT4 is referred to as a race or performance brake fluid because of the viscosity limit. Therefore when it comes to performance vehicle it is important to change your brake fluid more frequently.

 

DOT5.1

 

Unlike DOT3 and DOT4, DOT5 fluid doesn’t absorb water.

 

DOT 5.1 is also hydrophobic which means none absorbing and is used because of the lower chances of corrosion. DOT 5.1 used to be exclusively in the high performance industry because it requires so much attention.

 

DOT 5 has its benefits of being silicon based, it won’t chip paint if you spill it on your car. When pouring DOT 5 you have to pour slowly. Pouring too fast will create air bubbles and this will put gas in your brake lines which will leave your vehicle at risk.

 

If your vehicle is use as a Sunday driver it almost certainly will have to be bleed after every time you let it sits for a long time. The moisture in the brake lines pool at the lowest point which is normally in the caliper. This once again makes the fluid compressible and puts your vehicle at risk.

 

Min Jung Hong is the professional synthetic brake fluid manufacturer in the industry. We also provide agricultural machinery oil, fuel injector cleaner, MoS2 grease, air compressor lubricants etc. products. If you need more information about synthetic brake fluid, welcome to visit our website or contact with Min Jung Hong directly!

 

 

Article Source: http://www.autodeets.com/top-5-whats-the-best-brake-fluid/

 

Small Hole Drilling Applications

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The applications of EDM small hole drilling might be expected to be very limited in scope. Indeed, it would be difficult to think of a more innocuous phrase than small hole drilling, a phrase befitting a niche technology. But this belies the reality of EDM small hole drilling as a machining method used in many industries, industries that value precision and the characteristic of EDM to drill through very tough materials. Its use in gas turbines is the best illustration of what EDM small hole drilling can do in your industry.

 

Gas Turbines and Hole Popping

 

A gas turbine is a highly adaptable type of internal combustion engine that converts the impulse generated by the combustion of compressed air and fuel into useful work. How this work is harnessed determines whether a gas turbine is part of a power generator or a jet engine. A jet engine harnesses the jet of exhaust gases created by combustion for thrust, for example. Common to all gas turbine engines, however, is a turbine located downstream of the combustion chamber, which gives them one of their most important characteristics—they are self-sustaining. The compressor that allows for efficient combustion is powered by the electricity generated by the turbine. But for such a critical role, gas turbines are subjected to an extremely hostile environment of intense heat and centrifugal forces, and it is no surprise that the alleviation of this problem has been a major impetus in gas turbine development.

 

The primary limiting factor in gas turbine development has been heat, and research looking to alleviate the problem of heat has focused on two areas. One area is material science. Since the problem of heat was recognized, many cutting edge alloys have been developed that can resist both the heat and centrifugal forces found inside a gas turbine. But today, this is not enough. Temperatures in modern gas turbine engines can exceed the melting point of even these advanced alloys. This prompted the second wave of gas turbine development, which focused on cooling methods. One of the most prevalent cooling methods is called film cooling. In film cooling, air is directed through holes drilled on the surface of a turbine blade, creating a film on the surface of the blade that acts as a barrier to super-hot exhaust gases. Modern turbine blades combine advanced, adamantine alloys with cooling holes, to which only EDM small hole drilling is suited.

 

The characteristics that suit EDM small hole drillings to applications such as turbine blade cooling hole drilling are its ability to drill through very hard materials, an absence of machine tool pressure, and pinpoint accuracy. An EDM electrode never makes physical contact with its workpiece, which means that an electrode will work regardless of how hard the workpiece is. This lack of physical contact also eliminates machine tool pressure, which can prevent working on a delicate workpiece like a turbine blade, and create burrs and other deformities. This lack of machine tool pressure also contributes to the great accuracy of EDM small hole drilling. Below are just some of the applications of EDM small hole drilling. This list is not comprehensive, but only suggestive of hole popping’s great versatility.

 

Fuel Injection

 

Fuel injection has essentially supplanted carburetion in automotive engines. Due to the superior precision with which fuel can be delivered to a combustion engine, fuel injection engines boast superior fuel economy, less toxic emissions, and require less maintenance than engines using carburetion. A fuel injector uses very small nozzles to atomize gasoline or diesel fuel, ensuring a precise and predictable delivery of fuel. This is why EDM small hole drilling is the favored machining method. A lack of precision in the diameters of nozzle openings could hamper proper functioning of a fuel injector.

 

EXCETEK has manufactured small hole drilling EDM since 2006, the hole drillings have CNC series and for general purpose series. As a leading drilling machine manufacturer, we have a strong R&D team to keep improving our products to meet the highest standard of our clients. If you are interested in learning more applications and specifications about small hole drillings, welcome to contact with Excetek, we are looking forward to corporate with you.

 

 

Article Source: http://www.holepop.com/edm-electrode-tubing/small-hole-drilling-applications/