Metalwork, properties and types of sheet metal profiles

Materials,types and characteristics of sheet tiles

When it comes to performing metalwork tasks, a type of tin which is a results of rolling aluminium, copper, steel and zinc is most often used.

Galvanized tin

Galvanized metal (tin) is basically black tin on which zinc is put on. When it comes to oxygen, zinc makes oxide and zinc, and that oxide surface coating protects the tin from corrosion. When we talk about the price, galvanized sheets are definitely the cheapest, it has the least trouble when it comes to temperature changes and it is the lightest. Connecting of galvanized tin can be combined with clenching and soldering, with copper or steel rivets. The stability of the tin material is very important, to say the least, but it is increased with steel rivets, while copper gives somewhat lesser stability – but it looks better.

Copper-ing of galvanized tin can be done manually, and that’s done in a way that the sheets of galvanized tin are covered with tiny grains of sand, which can be washed down afterwards, with a mild, dissolved hydrochloric acid. If it comes to fermentation in case of dripping on the surface (e.g. the ground) – this should be taken as a good sign that the dissolved material isn’t mild enough – adding water can resolve this. After the process of washing down with acid is completed, resulting metal sheets need to be washed down with plain water, and then they need to be left alone to dry.

After it’s been determined that all the panels are fully washed out and dry, they can be coated with a dissolved blue stone in ammonium. When the panels take in the copper color, they need to be (once again) washed down and dried, and then finally coat with oil.

Steel

It is well known that fully clean iron (chemically) doesn’t exist, it is tied according to runes from which it can be extracted via expensive processes. The iron resulted from this way of extraction owns little hardness and it is also soft. On the other hand, technically-done iron owns steel alloy (Fe) and carbon (C) with impurities as such as: silicon, phosphorus, sulfur, manganese and so on. When we take a look at the contents of carbon and the way it’s found, technically-given iron can be divided as:

• cast iron,
• steel.

Iron alloy is steel (Fe) and carbon (C) where the carbon contents are ~ 2,15% and it’s acquired by processing white raw iron, which has been extracted from iron runes which is melted in very tall ovens.

Steel, as the standard and basic material is easily forged, it is simply rolled and it can also be very well processed with cutting. When melted, it can be easily casted, and it has a high and good hardness.

These carbon – steels can be divided as:

• low-carbon steel (C < 0,26%),
• medium-carbon steel (C = 0,26 – 0,46%),
• high-carbon steel (C > 0,46%).

As the carbon density is increased, an increase in hardness will occur (resistance). While resistance, that is – hardness is growing, toughness and plasticity is dropping. By choice of need, carbon steel can be: tool-ed (C > 0,6%) and constructive (C < 0,6%) – When it comes to constructive steel, here we find less hardness, toughness is increased. Rolled tin sheets can be made out of this steel, as well as profiled (rolled), pipes, handles, clinks, rivets and so on. For other metals, and for steel processing tool steels are used. Tool steels posses strong toughness, as well as hardness, and own strong resistance on spending. Their working temperature is pretty low.

In relation to the amount of alloyed elements, these can be divided on:

• low-alloyed steel (up to 5-6% alloyed elements),
• highly-alloyed steel (over 5% alloyed elements).

When the job is about manufacturing steel construction, for example: bridges, high/hydro construction, various reservoirs and so on, low-alloyed steel is most often used.

And when we talk about highly-alloyed steel, they (because of the size of chemical content) own significant physical and chemical properties. In these properties, we can mention fire-stability, corrosion-resistance, very high resistance to spending and so on.

When manufactured in the chemical industry, e.g. for blades, this steel is used.

Zinc metal (tin)

It is well known that zinc tin owns great correspondence being that its easily processed as well as alloyed. However, under very high temperatures, these sheet go under heavy dilatation, but this issue can be solved of course. It is taken care of by spreading out the substances which tend t expand and collect.

Black metal (tin)

When constructive steels are rolled in between the rollers, the result is black tin. During the manufacturing process of tin elements this black tin is rarely used, however it is widely applied for manufacturing of metalwork. Connecting black metal can be done with bending, alloying, welding and riveting. Alloying is used during the connection process, and usually zinc tin can be copper-ed. With this, the stability is upgraded as well as the aesthetics. Panels are first cleaned very well, and then washed down with water.

After all of that, these are coated with crystallized zinc – chloride as well as with hydrochloric acid, in a clean rainfall water.  In most cases, the relation is chloride/rain-watter/hydrochloric acid = 1:2:2.

Copper metal (tin)

Copper is a metal of glow-y red color, it is soft and easily bent, spread and is a very good conductor of electricity as well as heat. Being that it tends to allow sulfate hydroxide – who protects it from corrosion – it is very stable – and that’s how we conclude that its life-cycle (longevity) is practically unlimited.

The corresponding factor for its wide use is his high price. Copper is resistant to corrosion, affects of salt and sweet water, but it is devastated by the effects of acid and ammonia. It is produced in the form of metal sheets, pipes, wires and tracks. Connection is achieved with hard alloying, riveting, in a combination with welding.

Mesing (Brass)

It is well known, that when there’s talk about the best mechanical properties – brass is used, being that it owns 40% of zinc. As such, it is most applied during the manufacturing process of decorations – on buildings, and so on. Connection is do done with hard alloying, riveting and welding.

Lead tin (lead sheets)

Lead metal tin is easily process, easily bent and melted. When oxygen shows up, then the surface of the tin is cut with scissors which then is continually protected from corrosion. Lead of course, as well as many other materials, has some disadvantages. One of those disadvantages is that under heavy and extreme temperatures (e.g. in case of a fire) comes to easy melting and damages will almost definitely occur.

Aluminium metal (tin)

After magnesium, aluminium is the lightest metal. Blue-white color it is well known by its softness and elasticity – it’s well rolled. Aluminum is also a great conducter of electricity and heat. On air, aluminum, with oxygen, great an oxide form of protection which protects it from corrosion. It is acid-resistant, especially on acid affects, expect for hydrochloric acid, while sea water and bases are pretty destructive for it. With aluminium, connection is done via riveting with aluminium rivets, welding and lacing. Aluminium sheet metals (tin) doesn’t get alloyed.

When it comes to conducting metal-work, it would be good (if possible) to avoid riveting, lacing or welding, of different materials being that an electrical shock can occur during some of the atmospheric influences.