Posts: 14,118
Threads: 61
Joined: Oct 2014
College of nursing application form Lilith 2015
SUMMARY
We use simple complexes cutting scissors. This manual method, so that must be spent in vain, because it is a mistake, for example, the wrong size, etc., and even a simple cut can take a long time to time machines.Hydraulic sheet metal is also available for cutting sheet metal. But this method is only used for heavy metals and its cost is very high.We already Use a pneumatic system for cutting sheet metal in an easy way. It works by using a pneumatic hand control lever of the valve in one of two ways.The regulating valve control with the help of the compressor.
INTRODUCTION
INN:
Sheet metal only metal Formed into thin and flat pieces. This is one of the fundamental forms used in metal working and can be cut and bent into a variety of different forms. Numerous household items made of the material. The thickness can vary significantly, though a thin sheet or foil thickness is considered, and pieces thicker than 6 mm (0.25 inches) with a flat is considered.
Sheet metal is available in flat pieces or in the form of a coiled strip. Coil shaped, based on a continuous sheet of metal through the coil slitting.
The thickness of the sheet metal is called its calibration. Is usually made of stainless steel sheet metal ranges from 30 caliber up to 8 gauge. The higher the number, the thinner the metal detector. The sensor is measured in ferrous (iron) metals, while non-ferrous metals, such as aluminum or copper is different; That is, the thickness is measured ounce Copper.
There are many different metals that can be made of sheet metal, política asaluminium, brass, copper, steel, Tin, nickel and titanium. For decorative purposes, important sheet metals include silver, gold and Platinum (Platinum metal leaf is also used as a catalyst.)
Tin is also used in aircraft wings, bodywork, medical tables, roofs of buildings (architectural) and much more. Sheet metal of iron and other materials with high magnetic permeability, also known as the laminated cores of transformers and electrical steel, has application in the machines. Historically, it is important to use sheet metal armour worn by Cavalry, still has a lot of sheet metal, decorative, including horse tack. Sheet metal workers, also known as "Tin haters" ("Metal Hammer"), which is derived from the seams of Stuka Panel when the tin roofs.
There are three main procedures in the layout
1. Parallel
2. Radial
3. Triangulation
Sheet metal cutting:
Cutting processes of sheet metal, separated by a large army to cause enough material.
The most common is reduced By applying the methods of the shift, and therefore is sometimes referred to as the cutting processes.
When power is Applied the scissors, the shear stress in the material shear and tensile strength exceeds the material will fail, and divided place.
It is used of shearing force two instruments, one on top and one underneath the sheet. Will these punch and die tools or the upper and lower incisors, above the tool sheet provides a quick turn down on the sheet metal, which is at the bottom of the tool.
There is a small gap between the top and bottom edges of the toolbar, making it easier to break the material. The size of this gap, usually 2-10% of the material thickness and depends on several factors, such as the shift from a specific process, material and sheet thickness.
The effects of shear on a material change in the cut progresses and is visible on the edges of the tissue shear. When the effects of the leaf blade or blow, the gap between plastic deformation tools allows sheet and "rollover" edge. How to penetrate the tool sheet, vertical shear zones leads advanced fear of pirate material.
Finally, the shear stress is too large, and the material fractures with a slight angle in the year Burr Formed at the edge. The height of these areas cut depends on several factors, including the severity, Toolset and the gap between the tools.
IP address: Recorded | IP address: Ultimate Security Written