Welding and Cutting

The helmet takes the place of a safety helmet and gives a firm attachment to the flip-up visor. When welding the visor is dropped to protect the eyes from the light coming from the welding torch. It is obviously difficult to see anything through the visor except the filtered welding torch flame. The visor can be flipped up to let the welder clearly see the result of the weld, or to move to another spot.

Probably MIG (GMAW). Once the machine is set, one only has to depress the trigger and move at a fairly constant speed along the material.

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The laser tool for cutting has different capabilities than other tools. it's noncontact cutting and small beam diameter (0.007 inch typical) means that it can cut intricate shapes and small features. Mechanical tools with small diameter endmills must run slowly and be careful not to break the tool or heat it too much. You can make intricate parts, such as machine components.

Lasers can also cut materials that would otherwise wear down tooling. Laser cutting carbon steel and stainless steel is commonly done with laser because it costs less than replacing tooling on a CNC machine, and it can be much faster. You can make quarter inch sheet metal parts used in stainless steel tools.

Lasers can cut materials and leave a smooth or polished edge, thus remove a secondary process for grinding, such as that caused by a plasma cutter that leaves a rough edge, or a router that leaves a rough edge. You can make point of purchase displays made of thick polished acrylic.

One of them is the 'butt joint', where two pieces of metal are simply butted together.

Another is the 'lap joint'. Other types include, but are not limited to: the flange joint, the corner joint, and the cruciform joint.

See the related Wikipedia link listed below for more information, including diagrams.

Weld or solder them, or use screws, bolts, clamps, or rivets. Gluing with epoxy is also an option.

Welding would melt the base metal and filler metal while brazzing only melts the filler metal.

Absolutely not!! it is youre hereitary that determines that!

the rod will simply stick to the material being welded!

Dermal fillers are synthetic or semi-synthetic dermal matrix components which can be surgically injected into the skin to replenish aged skin and remove wrinkles.

the weld formed using only one pass

flat, horizontal, vertical and over head position

Laser cutting machines cut through a large variety of materials, but there are several laser technologies. CO2 laser can cut organic materials like wood, paper, cardboard, fabric, acrylics and plastics.

A Welding Procedure Specification (WPS) is a document that provides variables and conditions of a welding procedure that is produced for a very specific application.

To write one properly, experimentation and calculations must be done to find the correct parameters for the procedure.

To generalize, a WPS must include all known parameters of the process; including process type, current, current type, voltage, shielding gas type, shielding gas flow rate, base metal, electrode type and size, filler metal type and size, joint design, and travel speed. There may be more variables than listed, depending on the application.

One must also remember that on a WPS, ranges for variables are used that are adjustable by the welder or welding operator. Ex. Current (Amperage) 150-170 A instead of just saying 155 A. To find these ranges is where calculations are necessary.

50-90v is ocv

http://www.tubecraftflange.com/products/slipon.htm

TubeSlip-On Flanges are probably the most common type of flanges in the industry and are ideal for lower pressure applications. You do not have to specify the pipe schedule when using slip-on flanges due to the fact that its inside diameter is determined by the outside diameter of the pipe. This outside diameter of the pipe does not change for the different schedules. This often makes these easier to stock for vendors. Fabricators also like the fact that these flanges are slightly easier to align than weld neck flanges. They also are slightly easier to cut pipe to the proper length for. They can be used for high temperature and pressure applications but are not generally recommended as compared to other types of flanges. ASME B16.5 Code limits their usage in the 1500#-2500# (lbs.) weight classes.

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Ships are built in segments or sections usually in a building for protection from the elements, rain, snow, heat etc. Automatic MIG (GMAW) is used as much as possible. Manual MIG and stick (SMAW) are then used in places or positions automatic machines cannot get to. These sections are transported to building ways where they are joined together to form the ships structure. Thick sections are sometimes welded with the submerged arc welding process. MIG welding is then used where ever possible and stick welding is used every where else. Smaller pipe systems and light gauge sheet metal structures are usually TIG (GTAW) welded. Large pipe sections are MIG welded on rollers. Some are stick welded when in place on the ship. Newer processes such as Laser Welding is making inroads in heavy fabrications.

It melts. Avoid moisture. To cover the weld. ------ Plus adds alloying ingredients, determines the type of electrical current to be used (AC - DC or either), slows the cooling rate of the puddle to temper the weld, tells you what position you can weld in (flat,horiz,vert,overhead), protects the molten puddle from harmful gasses in the air by creating smoke and slag, determines how much amperage you will need to use, shapes and contours the weld bead and much more.