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Sls Front

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Sls Front
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Why Your Engine Needs It

For a power-producing machine, your car has many moving parts inside the engine. The purpose of engine oil is to lubricate these moving parts in order to reduce friction and ultimately keep the components at quality working order. Modern engines are designed with exacting tolerances, meaning they require higher quality oil to provide added protection.

As well as lubricating your car's engine, it contains cooling properties that will keep the engine's temperature down. It also neutralizes the acid which is formed by burnt gas, which means it prevents your car from rusting.

Choosing the Right Oil For the Job

To make sure you have the right oil for your engine there are three main types that are available: synthetic, semi- synthetic and mineral. Synthetic oil is developed with no natural impurities found in mineral oil and semi-synthetic oil has a balance of part mineral oil and part synthetic. Mineral oils are the traditional engine oil, which is derived from natural crude. Depending on what type of engine you have will help you decide what one  best suits your engine.

Viscosity is another important element for choosing the right product. All containers have a numbered code on the front, for example 25W-50, 10W-60 and 5W-30. These numbers represents how the oil will flow inside the engine (this is viscosity). The majority of products in the market have two numerical values like the above examples. The first set of numbers relates to how the oil will flow when it is cold (the W represents winter). And the second set of numbers represents its ability to flow when the oil is hot. The thinner the oil generally means the lower viscosity, for example 5W-30 will flow more easily, thicker oils like 25W-50 will have a higher value and will have a stronger resistance to flow.

Engines will need oil that is thin during cold start-ups (when it is at its thickest), but the oil needs to be thick enough when the engine is hot (when it is at its thinnest).

When to Change Your Oil

There are two crucial elements for deciding when to change your engine's oil: how long it has been inside the engine, and how many miles/kilometres it has done since the last change.  Abrasive dirt particles will start to mix into the oil not long after changing it, and the more kilometers the engine does, the more dirty it becomes. It comes down to your personal choice, as the cleaner the oil is, the better performance you will find from your car. If you want to be precise, look at changing the oil every six months or around every 3,000 to 6000 miles (5,000 to 10,000 kilmetres), whatever comes first.

Leaving old and used oil in your engine is not good as it will begin to stop doing the job it was created to do. The by-product of used oil is a black sludge that will only leave a negative impact in your engine, thus shortening the car's life span. If you happen to be buying a new car it is important you look at the oil quality to analyze how neglected the engine might have been. remove the oil cap and see what it looks like, any thick, baked on or sludge-like oil is a dead give away.

Darren Cottingham is a motoring journalist in New Zealand. If you are looking for a good used car for sale make sure you get a mechanical inspection and car insurance to protect yourself and your car.

Selective Laser Sintering (sls)

WHAT IS SLS?

Rapid Prototyping refers to the creation of quick representations of final products from an initial idea and taking it through successive iterations until the final form is developed without tooling or molds. Selective Laser Sintering (SLS) is one of the most popular Rapid Prototyping mechanisms in which a laser beam selectively fuses or sinters powder materials, nylon, elastomer etc. Selective Laser Sintering (SLS) can provide your manufacturing business with a leading edge by producing rapid plastic or metal prototypes that closely match their molded counterparts.

SLA vs SLS

The primary advantage of Selective Laser Sintering (SLS) over Stereolithography is that it builds prototypes in nylon material. It is possible to make structurally functional parts such as living hinges, functioning springs, snap fit components with nylon material using Selective Laser Sintering. The process in itself is very simple and there is no molds or tooling involved. The nylon material used in SLS can be easily machined, drilled and tapped unlike those used in SLA, which are brittle as they are built with liquid photopolymers and cured with UV light. They continue to cure once complete and as a result become more brittle as time goes on.

Since being patented by Dr. Carl Deckard in 1989, the Selective Laser Sintering (SLS) technology has become one of the most popularly utilized processes for rapid prototyping and product development in manufacturing industries. Selective Laser Sintering has become a very reliable and trusted form of rapid prototyping due to its structural properties. Selective Laser Sintering (SLS) is particularly useful when the design is complex, customized, needs to be functional or requires short run production.

PROCESS

In the Selective Laser Sintering (SLS) process, 3D parts are created when an infrared laser beam sinters and fuses powdered materials. The final object is created by repeatedly fusing thin layers using the laser beam. This process also known as additive manufacturing producing parts that gradually increase in size until they reach the prescribed size. These prototypes are created directly from the STL file obtained from 3D CAD models.

The most beneficial characteristic of Selective Laser Sintering (SLS) is how durable and functional the materials are. These materials include versions of the original DuraForm and DuraForm glass-filled (GF), which are nylon-based materials that create highly durable and functional plastic prototypes. Other Selective Laser Sintering (SLS) materials available are Flex Plastic for elastomeric, rubber-like parts, and LaserForm, which makes metal prototypes.

ADVANTAGES

Research and development has been progressing to bring newer selective laser sintering (SLS) materials to the market. These materials are such that they require no post processing steps whatsoever after building and this offers a distinct advantage over stereolithography (SLA). This however does not mean that these materials cannot be processed. All of the selective laser sintering (SLS) materials can be finished in multiple ways. They can be painted, plated, drilled, tapped, or even machined. This allows for a higher grade of appearance to these parts thus giving users an unlimited potential to use them.

About the Author

Annette Kalbhenn is Business Development Manager at a Rapid Prototyping Service Bureau. For more info on how you can benefit from Selective Laser Sintering (SLS) check out http://www.3dPrototype.com

Car has leaking oil and transmission problem? Idea of what it is?

My car has 2 problems and theyre both bothering me. 1 problem is that it leaks oil, this happens only after i park the car, the car was working fine but all of a sudden it started leaking oil 2/3 months ago from the front. ITs a cadillac 1996 seville sls. The next problem is that it has a incorrect gear ratio, (it wont switch into 4th gear) any idea on what the cost could be to fix one or the other?

The oil leak and trans problem may be related. Is the oil leak coming from the trans? You can determine this by placing a pan under the area of the leak and checking the color of the fluid. If the fluid is red it's trans fluid, and this leak may be causing your trans problems. Check this first, and if it is a trans fluid leak you can have new seals installed at a transmission place, like amco, for about $100.00. Taking the car to a dealer will cost you big bucks.

Additive manufacturing market, developments continue growing
The additive-manufacturing (AM) industry has become stronger over its sometimes up-and-down 22-year history, and gained a formal name (additive manufacturing) that provides a better descriptor of what the various processes can actually do, as opposed to the original name of “rapid prototyping.” Still, there remains demand for the RP process, notes Scott Harmon, VP of business development for Z ...

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