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drefsvfgbjhtzr ha inviato un aggiornamento 2 anni, 11 mesi fa
“Metal honeycomb substrates used in catalytic converters are made from extremely thin metal foil, typically with a thickness of just 0.05mm. By comparison the walls of a ceramic substrate may be four times thicker. For this reason, metal substrates offer less resistance to gas flow and therefore can accommodate a given flow rate with a lower…[Leggi tutto]
drefsvfgbjhtzr ha inviato un aggiornamento 2 anni, 11 mesi fa
“What is Energy Storage Systems?
Energy Storage Systems are the set of methods and technologies used to store energy. The stored energy can be drawn upon at a later time to perform useful operation.
For instance, many renewable energy sources (such as wind, solar energy or solar energy, tides) are intermittent. Sometimes the use of renewable…[Leggi tutto]
drefsvfgbjhtzr ha inviato un aggiornamento 2 anni, 11 mesi fa
“Nowadays, there are many kinds of knitting machines existing in the market. The most common one is sweater knitting machine.
Sweater knitting machine also referred to as flat bed or v-bed knitting machine. That have two rib gated, diagonally-approaching needle beds, set at between 90 and 104 degrees to each other and are positioned so that the…[Leggi tutto]
drefsvfgbjhtzr ha inviato un aggiornamento 2 anni, 11 mesi fa
“Conveyors are material handling systems that allow for easy transporting of products, from powder to bulk to complicated geometries. They are integral to all kinds of systems, as they provide a fast and safe method of handling large volumes of materials. There are many kinds of conveyors, but their working principle remains constant across each…[Leggi tutto]
drefsvfgbjhtzr è diventato un membro registrato 2 anni, 11 mesi fa
È stato aggiornato il profilo di Solder is a fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to wet the parts of the joint, where it adheres to and connects the pieces after cooling. Metals or alloys suitable for use as solder should have a lower melting point than the pieces to be joined. The solder should also be resistant to oxidative and corrosive effects that would degrade the joint over time. Solder used in making electrical connections also needs to have favorable electrical characteristics. Soft solder typically has a melting point range of 90 to 450 °C (190 to 840 °F; 360 to 720 K), and is commonly used in electronics, plumbing, and sheet metal work. Alloys that melt between 180 and 190 °C (360 and 370 °F; 450 and 460 K) are the most commonly used. Soldering performed using alloys with a melting point above 450 °C (840 °F; 720 K) is called "hard soldering", "silver soldering", or brazing. In specific proportions, some alloys are eutectic — that is, the alloy's melting point is the lowest possible for a mixture of those components, and coincides with the freezing point. Non-eutectic alloys can have markedly different solidus and liquidus temperatures, as they have distinct liquid and solid transitions. Non-eutectic mixtures often exist as a paste of solid particles in a melted matrix of the lower-melting phase as they approach high enough temperatures. In electrical work, if the joint is disturbed while in this "pasty" state before it fully solidifies, a poor electrical connection may result; use of eutectic solder reduces this problem. The pasty state of a non-eutectic solder can be exploited in plumbing, as it allows molding of the solder during cooling, e.g. for ensuring watertight joint of pipes, resulting in a so-called "wiped joint". http://www.hcdurostone.com/solder-pallet-material/ 2 anni, 11 mesi fa
Solder is a fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to wet the parts of the joint, where it adheres to and connects the pieces after cooling. Metals or alloys suitable for use as solder should have a lower melting point than the pieces to be joined. The solder should also be resistant to oxidative and corrosive effects that would degrade the joint over time. Solder used in making electrical connections also needs to have favorable electrical characteristics. Soft solder typically has a melting point range of 90 to 450 °C (190 to 840 °F; 360 to 720 K), and is commonly used in electronics, plumbing, and sheet metal work. Alloys that melt between 180 and 190 °C (360 and 370 °F; 450 and 460 K) are the most commonly used. Soldering performed using alloys with a melting point above 450 °C (840 °F; 720 K) is called "hard soldering", "silver soldering", or brazing. In specific proportions, some alloys are eutectic — that is, the alloy's melting point is the lowest possible for a mixture of those components, and coincides with the freezing point. Non-eutectic alloys can have markedly different solidus and liquidus temperatures, as they have distinct liquid and solid transitions. Non-eutectic mixtures often exist as a paste of solid particles in a melted matrix of the lower-melting phase as they approach high enough temperatures. In electrical work, if the joint is disturbed while in this "pasty" state before it fully solidifies, a poor electrical connection may result; use of eutectic solder reduces this problem. The pasty state of a non-eutectic solder can be exploited in plumbing, as it allows molding of the solder during cooling, e.g. for ensuring watertight joint of pipes, resulting in a so-called "wiped joint". http://www.hcdurostone.com/solder-pallet-material/ è diventato un membro registrato 2 anni, 11 mesi fa
Ford Palmer ha inviato un aggiornamento 2 anni, 11 mesi fa
Ready to purchase your new Goyard handbag? Visit our cheapgoyardbagsoutlet.com Cheap Goyard Outlet Sale Store!
Ford Palmer è diventato un membro registrato 2 anni, 11 mesi fa
È stato aggiornato il profilo di In a piston engine, a piston rod joins a piston to the crosshead and thus to the connecting rod that drives the crankshaft or (for steam locomotives) the driving wheels. Internal combustion engines, and in particular all current automobile engines, do not generally have piston rods. Instead they use trunk pistons, where the piston and crosshead are combined and so do not need a rod between them. The term piston rod has been used as a synonym for 'connecting rod' in the context of these engines. Engines with crossheads have piston rods. These include most steam locomotives and some large marine diesel engines. Piston rods are usually attached to the crosshead and the piston by a transverse slot and a tapered key or gib. Driving this key sideways tightens the attachment. Using a transverse key allows relatively easy dismantling for maintenance. Some smaller pistons are retained by a threaded piston rod and a large nut, although the crosshead nearly always uses a key. As the precise length of the piston rod is important for timing the engine's valvegear, the attachment tightens the piston down onto a fixed step or location in the piston rod and the length (and valve timing) is not adjustable. This length requires the precision of the manufactured rod but, unlike the rod driving the valves, does not need to be adjusted even more precisely by a fitter during the engine's erection. http://www.chennamachinery.com/piston-rod/ 2 anni, 11 mesi fa
In a piston engine, a piston rod joins a piston to the crosshead and thus to the connecting rod that drives the crankshaft or (for steam locomotives) the driving wheels. Internal combustion engines, and in particular all current automobile engines, do not generally have piston rods. Instead they use trunk pistons, where the piston and crosshead are combined and so do not need a rod between them. The term piston rod has been used as a synonym for 'connecting rod' in the context of these engines. Engines with crossheads have piston rods. These include most steam locomotives and some large marine diesel engines. Piston rods are usually attached to the crosshead and the piston by a transverse slot and a tapered key or gib. Driving this key sideways tightens the attachment. Using a transverse key allows relatively easy dismantling for maintenance. Some smaller pistons are retained by a threaded piston rod and a large nut, although the crosshead nearly always uses a key. As the precise length of the piston rod is important for timing the engine's valvegear, the attachment tightens the piston down onto a fixed step or location in the piston rod and the length (and valve timing) is not adjustable. This length requires the precision of the manufactured rod but, unlike the rod driving the valves, does not need to be adjusted even more precisely by a fitter during the engine's erection. http://www.chennamachinery.com/piston-rod/ è diventato un membro registrato 2 anni, 11 mesi fa
drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“Double-twist stranding machines, high-performance twisting machines
Double Twist Stranding Machineare effective, compact production units primarily for use in the manufacture of highly flexible braids, bundled braids, for stranding pairs of wires, triples, quadruple designs …The machine concept differs from the single-twist system in that one…[Leggi tutto]
drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“Introduction To Splitters
Early microscopes were essentially a tube through which light travels (Figure 1A), from a sample to the eye (or a camera), through some lenses. Modern microscopes have a variety of objectives, mirrors, and pinholes in order to obtain the best image (Figure 1B). The component of interest here is the beam splitter.A beam…[Leggi tutto]
drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“WHY PEOPLE CHOOSE ALUMINIUM TRUSS RATHER THAN IRON TRUSS
Aluminum truss is a important structural material for event stages, It plays a main role in the truss works. Above all, safety comes first in all around a event, especially for the stage, thus the quality of the truss is the key point. Why in these days, more and more event organizers and…[Leggi tutto]drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“Baby Wipes: Keeping Your Baby’s Skin Clean and Healthy
Baby wipes have become an essential part of daily life for many families. As their use has expanded with time, Pampers Baby Wipes have continually improved to meet changing consumer needs, with notable advances in skin health features.Gentle Care for Diapered Skin
The skin around a baby’s…[Leggi tutto]
drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“What is the difference between flatbed semi trailer and flatbed drawbar trailer?
Many people will ask what is the difference between a drawbar flatbed trailer and a flat bed semi trailer. In fact, a full trailer and a semi-trailer are only connected differently than the traction car in front. Below we will introduce the difference between a…[Leggi tutto]drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“Advantages and Disadvantages of a Lathe Machine
A lathe machine is a commonly used machine that works through removing the undesired material from a rotating workpiece with a cutting tool that is fed against the work either crosswise or longitudinally to give its desired shape and size. This is also known as the “mother of all machines” and due…[Leggi tutto]drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“POCT in Developing Countries
Point of Care Technology (POCT) means acquiring clinical parameters from the place where the patient is, thus generating faster test results leading to a faster turnaround time. However, improvements in patient outcomes depend on how healthcare delivery professionals and system utilize faster turnaround times. Thus,…[Leggi tutto]drefsvfgbjhtzq ha inviato un aggiornamento 2 anni, 11 mesi fa
“Application of shallow air flotation for water treatment
The advantages and disadvantages of traditional air flotation and shallow air flotation were compared. The effect of shallow air flotation on acrylic fiber wastewater treatment was studied through the wastewater treatment project of a chemical fiber corporation in Jilin province. The…[Leggi tutto]drefsvfgbjhtzq è diventato un membro registrato 2 anni, 11 mesi fa
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buon giorno,
mi sono registrata,come faccio ad avere lo sconto di 10 euro cosi procedo all ordine?
Buon giorno, a breve ricevera’ il codice sconto nella sua mail
Anche io mi sono registrato entro il 31 agosto, come si attiva lo sconto?
L’offerta era valida per registrazioni effettuate entro il 10 Agosto ed il buono fruibile entro il 31 Agosto,
Anche lei riceverà un piccolo codice promozionale di Benvenuto presto, verrà ricontattato…
Continui a seguire eGolden, molte altre offerte e promozioni sono alle porte
Peccato! Mi sono registrato solo ieri!
Buongiorno, grazie per la registrazione, per darle il benvenuto riceverà anche lei un piccolo buono sconto promozionale… sarà presto ricontattato
Ciao