24
Sep 2011

Sheet Metal Cutting, Shearing, CNC Laser Cutting

Author: PRIYANK SHAH

Sheet Metal Cutting

Sheet metal is one of the fundamental forms of thin metal pieces used in most of the metal working applications. Sheet metals can be cut and bent into different shapes. They can either be flat or coiled. The sheet metal coils are usually formed by running a continuous sheet of metal through a roll slitter and are used in various applications like car bodies, airplane wings, medical tables, roofs for buildings etc. Different kinds of metals including steel, aluminum, brass, copper, nickel etc can be formed into sheet metal. Cutting sheet metal can be done by various methods like shearing cutting, CNC laser cutting, CNC water jet cutting, press brake forming, punching etc.

Shearing

Shearing is a general name for most of the sheet metal cutting processes that utilize shearing force to cut sheet metals. These are widely employed metal cutting processes that produce straight line cuts to separate a piece of sheet metal from a flat metal stock. Shearing is generally performed by shearing machines which consist of two blades. Metal to be cut is placed between these two upper and lower blades which are then forced past each other with the space between them determined by a required offset to cut metal sheet. Metal shearing can be performed on metal sheets, metal strips, bar, metal plate, metal coils and even angle stock which can be cut-to-length as required. By employing different methods like punching, piercing, lancing, slitting, nibbling and notching metal sheets in various designs and patterns can be formed.

CNC Laser Cutting

Modern sheet metal cutting operations are based on CNC lasers cutting processes. Laser cutting makes use of high density light energy to cut sheet metals. In CNC laser cutting process a beam of high-density light energy is focused through a tiny hole in a nozzle. When this beam strikes the surface of the work piece, the material of the work piece is vaporized. Laser cutting can produce almost any type of two dimensional metal shapes and can applied to different types of materials like steel, aluminum, copper, acrylic etc. However it is highly suitable for cutting stainless steel sheets. One notable advantage with CNC laser cutting is that this process yields minimal burrs and minimal heat distortion.

Article Source: http://www.articlesbase.com/online-business-articles/sheet-metal-cutting-shearing-cnc-laser-cutting-4765671.html

About the Author

Priyank Steels provides services for metal cutting, metal bending, metal forming including sheet metal cutting, metal shearing, cnc water jet cutting, cnc plasma cutting, cnc oxy fuel cutting, cnc laser cutting, press brake bending and also provides stainless steel parts like stainless steel sheets, stainless steel coils, stainless steel plate, stainless steel strips, stainless steel flanges etc.

24
Sep 2011

Lincoln Welder Machine is Powerful Tool Used for General and Industrial

Author: Jake Smith

All kinds of manufacturing industries' work involve welding and similar operations. For successful development of all its efforts, welding holds an important place. Lincoln welding machine can be used for many different purposes in the entire process of manufacturing. A welding machine is a machine that is used to fuse two things together. Any kind of metal object that is required to be welded in any type can be operated on by a Lincoln welder machine.

There are various types of Lincoln branded vehicles available along with many Lincoln welding machines that can carry out various types of welding activities. The most commonly used welding technique that is used in the manufacturing industry is the arc Lincoln welding. It involves a simple stick welding process and is portable in nature. Lincoln welder machine is a powerful tool and is perfect for use in general repair, hobbyist and fabrication, factory maintenance commercial industrial and agricultural usage.

Lincoln welder machine is an inverter type and has Infineon IGBT type with 240 input volts and 160 or 200 amps rated output. It is widely used because of its low running and capital costs. In case metals like copper, aluminum, stainless steel and magnesium has to be welded, the best Lincoln welder machine to be used is tig welder. Lincoln tig welder supports stronger and higher quality welds. Tig Lincoln welder machines are available in different types for different metal thickness. Some of the available types are: power tig 250 EX, tig 200 DX, power I- tig 200, power tig 225 LX and power tig 315 DX.

Market also has Mig welders known as aluminum Mig welder as it can weld only aluminium but some of the modern Lincoln welder machines can also be used on steel. It is used and known for its ease. Mig Lincoln welder machine has an input of voltage of 240v and is mostly used in fabrication automotive and general repair.

Manufacturing companies can also opt for multi-purpose welding machines that will serve a variety of purpose during the construction work. They not only serve the many purpose but also save lot money. They come with various parts that can be fixed to weld different materials with different thickness.

 

Article Source: http://www.articlesbase.com/industrial-articles/lincoln-welder-machine-is-powerful-tool-used-for-general-and-industrial-5233256.html

About the Author

Jake Smith is a market analyst in the area of welding supplies in Australia. He likes to share information as well as features of Lincoln welders and welding machine on the basis of investment done by industrial clients in Australia.

16
Sep 2011

Types of Plastic Fixings for Hollow Surfaces

Author: Luke Wildman

It is always tricky to install fixings on thin and hollow surfaces, like walls with a plasterboard drywall or a hardboard wall, which are only tacked onto the actual wall by being glued or being nailed onto studs.  Builders are always advised to drill the holes into the support of the wall itself, but even finding where the support is can be problematic at times.  Thus, there is a need for special fixings that can allow us to mount objects on thin walls and hollow surfaces without damaging the wall itself.

Many of these fixings designed for hollow surfaces are made of plastic.  That is because plastic is durable, easy to work with, and do not cause that much of an impact upon a thin wall.  There are many types of these plastic fixings and below is a list of the more common ones.

  1. They also have a lip that stays on the outer surface of the wall so that the screw head will remain flat against the surface.

The advantage of rubber sleeves is that they do not need to be replaced in case the screw needs to be removed.  They also come in various sizes, and often with their own screws.  However, with rubber sleeves, you need to be absolutely sure that the hole you drilled is just the right width.  Otherwise, the rubber sleeve will twist around when you put the screw in.

  1. They also mould against the reverse side of the hollow wall when the screw is inserted.

The main difference between plastic collapsible plugs and rubber sleeves is that the plastic collapsible plugs are less flexible and less durable.  They need to be replaced every time the screw is removed.

  1. For this plug to work, the screw has to be turned inside at least twice, and then gently pushed in for the legs of the plug to spread.

Plastic spread plugs are quite durable and flexible.  The only disadvantage with it is that when it is already used and the screw has to be removed, it has to be replaced.  That is because it latches onto the screw and falls out of the hole in the wall.

Remember that you have to be absolutely careful when installing through bolts in thin and hollow walls.  You do not need to use force or hammer action with your power drill to create holes in putting in these through bolts .  If you do, you will end up damaging the wall.

Article Source: http://lukewildman.articlesbase.com/business-articles/types-of-plastic-fixings-for-hollow-surfaces-1359037.html

About the Author

Do you need more information on the right kind of fixings for your walls and mounts? You can find a few tips and tricks at http://www.jgpfixings.co.uk

11
Sep 2011

Glass Grinder Bits

Author: Stewart Ames

There are many tools that are essential to complete a handyman's arsenal, and a glass grinder is one of the tools that are less frequently used but still important. A glass grinder bit s used to cut pieces of glass, and it is a specialized tool that is only used for glass. Know what glass grinder bits do and how to use them is an important part of finding and purchasing one.

Glass grinder bits are actually separate bits that do not come with a set of Dremel tool bits, but you can easily find your own glass grinder bits. They are shaped similar to the other bits for the Dremel tool, but you can tell them apart by the fact that the edge of the grinder bit is sparkly. This is because low grade diamonds are used to cut glass.

Using glass grinder bits is actually fairly easy, and you can cut glass easily using the following steps:

Step 1: Outline on the piece of glass the design or shape that you want to grind into the glass. Usually you will need to draw the desired design for your piece of glass, as it is difficult to keep the Dremel tool to a particular path if it is not clearly laid out. You can use a marker, although many glass cutters use a grease pencil to make the markings on the glass.

Step 2: Grinding the design into the glass begins by selecting the right grinder bit for the job. Glass grinder bits come in all different sizes, and you need to select the right size bit for the grinding that you will be doing.

Step 3: Attach the grinder bit to the Dremel tool according to the instructions. Be sure to tighten the Dremel tool properly to ensure that the grinder bit doesn't spin out as you are using it. Glass grinder bits can be dangerous if they spin off a Dremel tool, so it is vital that you secure it properly.

Step 4: Begin at the outer edge of the piece of glass, and begin grinding in towards the center. Follow the pattern that you have outlined in the glass, and make sure to do the outer designs of the glass before getting to the middle portion of the glass. Doing the outer areas first ensures that the glass dust doesn't build up and obscure your view of your grinding. You will often need to brush away the glass dust as you work, as the dust will build up as you use the glass grinder bits.

Step 5: Once you have finished grinding the glass, turn off the Dremel tool and set it aside carefully. To finish off the grinding, you can use a sanding bit for the Dremel tool, and use it at a medium setting to give your outline a good rub down. This will create a frosted, even, and smooth appearance that makes glass look elegant.

As you can see, using glass grinder bits is fairly easy, and you can easily buy your own set of glass grinder bits to allow you to etch fancy patterns and designs in glass. You can even create your own stained glass windows if you get good at using the grinder bit.

Article Source: http://www.articlesbase.com/art-and-entertainment-articles/glass-grinder-bits-4958293.html

About the Author

Find out how glass grinders, glass grinder bits, glass grinder accessories, glass saws, kilns and other tools can make your glass art work easier, safer and more enjoyable.

6
Sep 2011

Applying Primer to a Car Body Repair

Author: dean Keeling

If you have had the misfortune of an accident which has left you with some unsightly damage like a bumper scuff, bumper scratch key scratch or dent then you might wish to have this
repaired. Having car body repairs carried out can be quite expensive whether it's by a mobile car body repair service or a static accident repair centre the price can be a major factor when considering having the car body damage repaired. Out of the two types of repair services stated above the mobile car body repair service or smart repair service as its also known is the cheaper options out of the two by sometimes 70% on certain types of car body repairs. So if you have the money and wish to have the work carried out by a professional, then that would be the choice for you. If the damage is more complex or requires large area resprays then it's the accident repair centre for you, which unfortunately will be considerable more expensive (best to bring your car insurance in to play for that one). Other options for the repair would be to carry out some of the work yourself. It's not as hard as you may think and can reduce the cost of having the repair carried out by the professionals by only leaving them with the painting and lacquering stages to complete the repair. Below is detailed information on how to prime and prep your car body damage so it's ready for the painting and lacquering stages.

First you will need some basic items

1)Bucket of water

2) 400 and 1500 Wet and dry paper

3) Paper Towels

4) Alcohol Cleaner (thinners will do)

5) Razor Blades

6) Masking Tape

7) Hot Air Gun

8) Flat rubbing block

9) Filler (if the damage is deep or requires filling)

10) Primer filler in aerosol can

11) Goggles and carbon filter mask

First use the razor blade to scrape off any loose debris or rough edges from the scratched area then clean with some alcohol based cleaner. If the scratch or scratches are quite deep then they will need filling. To fill the scratch place some filler on a razor blade and push into the scratches making sure the filler sits a little proud of the surface, then gentle heat with the hot air gun until the filler has fully set. Once set, rub back with some 400 wet and dry paper on a rubbing block making sure that the paper is always lubricated with water from the bucket, and rub until flush with the panel's surface.

Once the filler is flush with the car panels surface clean again and dry with the paper towel. Mask up an area on average 3 inches away from the scratches which are to be primed so that over spray can be contained. Shake the primer filler can vigorously for about 3 minutes, once shaken put on your mask and goggles and any protective clothing you might wish to use, with a sweeping motion apply a thin layer of the primer filler and gently heat with the air gun (don't get too close with the air gun, keep it moving as if drying your hair).

Once the primer filler has set, rub back with some 400 wet and dry paper till smooth and flush with the car panel. Dry with the paper towel and See if there are any scratches remaining. If there are continue with the application of the primer filler as stated above until all scratches have been filled.

This technique is a basic method for priming a car body repair, and is used throughout the car body repair industry.

Article Source: http://www.articlesbase.com/cars-articles/applying-primer-to-a-car-body-repair-5180606.html

About the Author

This article contains information on how to carry out your own priming on your car body repair, with basic techniques that are in current use within the mobile car body repair and static car body repair industry.