Daily Archives: November 3, 2016

What Is a Pneumatic Solenoid Valve?

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A pneumatic solenoid valve is a type of standard electro-mechanical solenoid that, when activated by electrical power, opens a valve under positive or negative air pressure. In standard industrial applications, they have been used for many years as a type of on/off switch for pneumatically powered systems such as with air-powered drills. They have also been commonly employed in fluid control systems such as for releasing hot and cold water into a washing tub in an automatic washing machine, or for outdoor lawn sprinkler systems.

 

The pneumatic solenoid valve differs from the traditional solenoid in that the actuator controls a valve that is under some level of pressure. It can either function to release pressure and allow gas or liquid to flow when electrical current is applied, or the pressure itself can activate the valve in reverse and create an electrical signal that is channeled to a monitoring station.

 

Some pneumatic valve assemblies are also small control units that act as triggers for larger solenoids, and together these types of pneumatic solenoid valve designs are often referred to as a pilot valve or as a compressed air pilot valve. Pilot valves can be stackable, meaning that they can be arrayed in series on a pipeline or other fluid or gas flow assembly so that pressure and flow can be channeled at key points in an industrial process. A single pneumatic solenoid valve that is installed as a pilot valve also often has a manual level of actuator control. This means that the solenoid function of the unit, where the actuator opens and closes the valve, can be controlled manually by pushing a button or moving a mechanical arm. In more sophisticated industrial systems, however, the pilot valve unit is electrically controlled through a series of programmable settings for running power to the solenoid when needed to open or close the valve.

 

In automated industrial systems where large amounts of inaccessible pipeline exist that must be controlled remotely, pneumatic solenoid valve systems are often chosen, as they can be operated by ambient pressure that builds up in the system itself and they don’t require external power. This allows them to act as a type of safety valve to release pressure when needed, and, in the process, the mechanical motion of the pressure release can activate the electro-mechanical feature of the solenoid so that a brief electrical signal is transmitted to a control station to indicate that the valve state has changed. They also serve a reverse function where they can be opened or closed from the control station if an operator determines that a system is not performing properly.

 

Solenoid valve parts can range from very small units for rapid, micro-control systems, where they have a 0.4-inch (10-millimeter) diameter and can be run on low-level direct current (DC) voltages of 12 volts. High-power industrial level valves at the opposite end of the spectrum are made of strengthened steel alloys. They can handle pressures of up to 4,500 pounds per square inch (316 kilograms per centimeter squared) and temperatures as high as 1,200° Fahrenheit (649° Celsius).

 

SHAKO is leading and the largest professional pneumatic solenoid valve manufacturer. Our solenoid valves are available in 6VDC, 12VDC, 24VDC and 110/220VAC. If you need more details about solenoid valve series, welcome to visit our website and feel free to contact us!

 

Article Source: http://www.wisegeek.com/what-is-a-pneumatic-solenoid-valve.htm

Aluminum Die Casting – A Closer Look at Its Finer Nuances

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The introduction of aluminum die casting goes back to 1914, when aluminum was invented for the first time. Though die casting was developed way back in the 1800s, yet only alloys of various compositions of tin and lead were used. However, aluminum revolutionized the whole concept of this amazing process.

 

Aluminum is Ideal for Die Casting:

 

The reason for the growing popularity of aluminum in die casting aluminum industry is for its lightweight and anti-corrosion properties. Apart from that, this metal possesses high dimensional stability for complex shapes and thin walls. High thermal and electrical conductivity, as well as ability to withstand high temperatures have made aluminum die casting a much-preferred option these days.

 

Cold Chamber Machines and Aluminum Die Casting:

 

Usually cold chamber machines are used for die casting aluminum, aluminum come with high melting points. The process involves pouring molten metal into a ‘cold chamber,’ or cylindrical sleeve. This can be done either manually by a hand ladle or by an automatic ladle. The next step involves sealing the cold chamber port and forcing metal into the locked die at high pressures with the help of a hydraulically operated plunger.

 

Automated machines in Die Casting:

 

Die casting aluminum these days have improved a lot and manual operations have rightly replaced automated quality control. Today there are many different types of machines utilized in die casting method, which can make your work easy, save your time and increase your productivity. While some die-casters use different tools to lubricate dies, ladle metal into cold chamber machines others use them to integrate other functions like quenching and trimming castings.

 

Even for adjusting Casting machines and assuring steady castings there are microprocessors these days. You can obtain metal velocity, shot rod position, hydraulic pressure and other data through these machines. Finally, all these helps in proper statistical analysis in quality control.

 

Proper designing for quality Die Casting:

 

Apart from using automated machines, for getting the right Aluminum Die Casting products it is necessary to have a great team of designers who take proper care to collaborate with casting experts. This is an essential prerogative during the early stages of designing in order to get a quality final product eventually. This also helps in cutting down unnecessary expenditures during the tooling and the production phase in Aluminum Casting. Designing and proper planning always results in proper execution, which in turn provides products that are of quality and have longer shelf life. This applies to Zinc Casting as well.

 

Champion H&C Inc. is an expert in Zinc, Aluminum, Magnesium Alloy tooling and mold design and manufacture. We provide professional skill suggestion in Mold design to our customer that can reduce risk and save more time in trial mold step, special in save cost. Our service is in Precise tooling design, tooling manufacture, Accurate test tool and Fixture, which will be requested by Optical Insulation, Electric, Computer Parts, RF, IA products, Optic, Varies Connector and Industrial Component.

 

Article Source: http://EzineArticles.com/expert/Alyna_Watson/478325

Article Source: http://EzineArticles.com/5650332