Autogenous Welding & Compressed Air System Essentials
Autogenous Welding Steps
Steps to use the “open-manometer pressure reducers”:
- Check the bottles or failing to stop open-open bottles (two) acetylene and oxygen.
- Gauge the key to your taste – gauge pressure at regular 50% of the blue line.
- Oxygen 0.5 pelin opened.
- A 5-acetylene flame – remove squatters black-smoke-ponytail and the flame must not leave open the oxygen torch, and let the white flame in 2 or 3 mm.
- Remove – shut off oxygen to acetylene torch.
- Close the two main keys.
- Open the 2 keys to the torch – let out the gas until the 4 gauges marked 0.
- Shut off the torch and loosen the gauge.
Technical Drawings
Kinds of Drawings
- Drawings or Diagrams: Very simple drawings that show only, clearly, the system of union between the different parts of a set of symbols using it properly.
- Drawing of Conception: Preliminary design drawings of a piece.
- Drawings of Definition: Made on the basis of the above and defined more clearly the part.
- Manufacturing Drawings: Drawings complement the definition, providing all information necessary for the execution or verification of the piece.
- Bounding Profile: Through successive radii and with rectangular coordinates. Bound in folding: the elongated LENGTH are drawn with dotted lines and points.
Kinds of Surfaces
- Rough Surface: A surface that is not at work, such as remains after a process of manufacture.
- Machined Surfaces: To obtain a higher degree of surface quality requires a machining-surface-treated.
- Surface-Treated: They are either without separation chip by chip separation or across special procedures such as nickel, painting, tuning, etc.
Tolerance of measurement represents the consideration of very small dimensions, using micron unit of measure to express them.
Constructive measures are those that are adopted as a result of the calculation of dimensions.
Measures or nominal dimension: it is the one used for identification purposes.
Practical measures: they are effective, determined by direct measurement.
Fluid Treatment: Compressed Air System
Distribution for el fluid treatment: cooling compressor-dryer-filter-accumulator-maguera air-conditioner-reel-automatic air-vent fast-dryer connector absorption.
Compressors
- Piston Compressor
- Screw Compressor
Decanters (Air Dryers)
Referred to as air dryers, responsible for eliminating most of the compressed air moisture while improving the volumetric efficiency of the installation, the cooling fluid.
Types of Decanters
- Decanter by Cooling: The air coming from the hot compressor passes through a serpentine or a radiator that cools and causes the condensation of moisture that has dissolved.
- Opted for Adsorption: The air pressure dare pass a chamber containing a gel that facilitates the condensation on the surface, on which is attached moisture.
- Opted for Absorption: The pressurized air passes through a prefilter that removes large droplets of water, then crosses an area where there is a solid that is dissolved gas reacts with moisture in the air, dissolving and both lean toward the bottom.
Accumulator
Warehouses that store the air compressor and generates missions are to maintain stable pressure-protect the compressor-cooled air compressor.
Conditioner
It consists of a series of elements that perform the task of preparing the indispenzable air pressure for the proper functioning of the tool and to not impair the proper finishing work, these elements are: lubricating-coupling, the union-support — purifier-gauge-regulator.
Joints and Fasteners
- Bolted Joints
- Riveted Joints
- Glued Joints
- Articulated Joints
- Connections made with other fasteners
Bolted Joints
The most important characteristics of the thread are: flank, crest, P, alpha, p, D.
In case of rupture of the use of a stud bolt with two nuts consecutive estractores asparagus, with an internal screw hole with a kind of screw taper to loosen up to leave, with a maguera is finished remove and alfojar.
In the case of seizing the nuts is if the liquid’s take this very rusted nut or a special key.