Thursday, January 17, 2013

The Pros of Using hydrostatic testing


The answer to what is passivation is quiet simple. Passivation is an important step in maximizing the essential corrosion resistance of parts and components machined from stainless steels. It can make the difference between good performance and premature failure. If performed incorrectly, passivation can actually lead to corrosion. Passivation is a post-manufacture method for maximizing the intrinsic corrosion resistance of the stainless steel alloy from which the working part was manufactured. It is not a treatment to remove scales, nor is it like a coat of paint.
The passivation process involves the removal of microscopic iron particles that had been deposited during the manufacturing process. Iron on the surface of stainless steel is also reduced. Removing iron makes the chromium in the steel react with oxygen, forming an invisible and microscopic protective layer. This reduces the possibility that the stainless steel should become stained or rusted with subsequent use. As stainless steel is expensive, passivation is well worth the investment. Nowadays, citric acid is used to passivate steel, which is effective, eco-friendly and safe. Not only does citric acid provide a superior barrier to the surface of steel, it is easy to dispose off after use. Stainless steel parts that are to be passivated must first be cleaned thoroughly. The parts are then placed in a citric acid solution where they remain for a predetermined period of time. Finally, the parts are double-rinsed with clean water and are then dried.   
Hydrostatic pressure testing enables leak detection in pressurized vessels, pipelines and plumbing. Newly manufactured pieces are initially certified using hydrostatic testing. They are then periodically re-tested at regular intervals. Using hydrostatic testing helps maintain safety standards and durability of a vessel over time. Testing is done to continually re-certify pressured vessels for safety. The use of hydrostatic testing over gas pressure testing helps to eliminate the possibility of explosions associated with gas pressure testing.
Hydrostatic testing involves filling the vessel or a piping system with a liquid, usually water, and subsequently the pressurization of the vessel to the specified test pressure. Pressure tightness can be tested by shutting off the supply valve and observing if there is a pressure loss. The location of a leak can be better identified if a colorant were mixed with the water. Strength is usually tested by measuring permanent deformation of the container.         
Click the link below to read more Newly manufactured pieces are initially certified using hydrostatic testing

Friday, December 7, 2012

Cleaning Metal Safely At Home

If you look around your home, chances are, you can probably name at least two or three types of metal sitting around. Whether it is your mom’s gold jewelry, your typical frying pan, the stainless steel refrigerator, or the box of aluminum foil sitting inside your kitchen cabinets, you can expect to find several different types of metals lying around your home. With frequent use, however, one can expect wear and tear to occur. Fear not—there are ways to clean those metal surfaces to make them revert back their original shine. Metal cleaning can be done so safely in your home using typical household products to brighten up the dull surfaces. 

One of the most abundant metals that can be found is aluminum. Aluminum is used to make machinery, appliances, pots, pans, gutters—you name it. Another popular metal is stainless steel. Contrary to the name, stainless steel can actually be stained. Thus, good handling and proper cleaning need to be instilled to ensure this type of surface remains stainless. Copper tarnishes quicker than some metals although the dullness is not harmful. Silver is another metal that is often used in jewelry and on the tables. This type of metal does not tarnish when worn around the neck often, but will when it sits around for long periods of time.

If you happen to be the owner of several different metals that had gradually darkened and became less shiny with time, there are several different ways to safely clean those surfaces. A lot of the products used to clean these metal surfaces are stuff you can find around your home. Cleaning metal surfaces can be achieved by using a variety of household products like baking soda, dishwashing soap, and water. However, there are some metal surfaces that cannot be cleaned around your home such as precision and medical parts. Precision parts cleaning and such should be left to professional metal cleaning services to ensure strict adhering to detail and high quality standards.

Whether you want to clean your kitchen appliances or polish up some copper pennies for fun, cleaning the metals around your home can make those metal surfaces shine like new. Although the dullness of some metals is not harmful, it does not hurt to have clean metal to look at. While some metals can be cleaned safely right in your own home, some are professionally cleaned. Professional metal cleaning services usually follow a strict standard of attention to detail since many precision and medical parts are used in life and death situations. However, for the normal copper pot or gold necklace lying around your home, the use of baking soda, water, dishwashing soap and other household products will suffice.

Please visit http://www.astropak.com/precision-cleaning-clean-room.php for more information on this subject.



Friday, November 2, 2012

Caring for Stainless Steel Cookware

Take a look around your home and inside your kitchen. It is not uncommon to find a stainless steel refrigerator or stainless steel cookware. Stainless steel does not readily corrode or rust like ordinary steel. Therefore, stainless steel products are highly attractive to consumers who do not want to deal with products that are easily prone to rust and corrosion. It is also worth mentioning that stainless steel cookware is not the holy grail of all cookware products since it is not completely stain-proof. Thus, proper caring and maintenance of stainless steel cookware items needs to be adhered. To understand how to care for stainless steel cookware, one must first familiarize themselves with the product prior to it being sold in retail stores.

Stainless steel products have a passivation layer that protects the stainless steel from corrosion and rust. This chromium oxide film allows the stainless steel to prevent further surface corrosion. You can only passivate the stainless steel when oxygen is present and the level of chromium is high. Other benefits of stainless steel passivation include reduction of corrosion vulnerability, reduction of product contamination potential, and decrease in equipment downtime.To know more details about passivate please visit: http://www.astropak.com/

To clean your stainless steel cookware, be sure to wash the cookware first with soap and hot water with a soft cloth prior to cooking. To clean, allow the cookware to cool off first before submerging it in cold water. Be sure to clean the cookware thoroughly after each use and dry with a soft towel. To avoid any potential damage to your stainless steel cookware, allow your food to cook or come to a boil before adding salt. The reason is because salt can destroy the protective passivation layer of your stainless steel cookware causing stains to appear.

Proper caring for your stainless steel cookware involves following certain rules so that the product lasts a lifetime. It is essential to know that one must never use abrasive cleaners on stainless steel products. Scratching and other damages to the finishing surface can occur to your cookware when using steel wool and brushes. In addition, one must never overheat the stainless steel product or else discoloration on the cookware will become apparent. Keeping these tips in mind will allow you to extend the life of your stainless steel cookware.

Before one can understand how to care for their stainless steel cookware, they must recognize the protective passivation layer on their stainless steel product. This layer is applied to reduce corrosion vulnerability on stainless steel surfaces. Adhering to appropriate cleaning and caring measures can enhance and increase the life of your stainless steel cookware. Contact a company who specializes in passivation or even electro polish to learn more about the passivation process for stainless steel products.
To find more details about electropolish please visit:


Saturday, October 6, 2012

Passivation – Protection You Need

The modern world is filled with many marvels, and within the medical and scientific fields there are numerous different areas of study, all working to improve the quality of our lives. While they'll all differ somewhat in terms of their processes and their goals, most have some things in common. Among them, the use of equipment and materials that are made from stainless steel and other metals is one of the common threads. These tools, surfaces, and equipment all need to be kept in top condition in terms of cleanliness, smoothness, and chemical non-reactivity. In order to do that, special steps usually must be taken.

Basically, the act of making a stainless steel surface passive in terms of its reactivity to chemicals is known as passivation. By treating the steel through a multi-step process the steel will essentially be neutral during any experiments or tests it is used for. This is vital when a totally neutral surface is needed – surfaces that react with a compound could alter results negatively and render all data gleaned from a study invalid. The process must be completed on totally clean, descaled surfaces and is fairly simple for experienced professionals to complete. It's commonly performed on a daily basis, and is one of the backbones of the research community.
If you want to know more about passivation please visit: http://www.astropak.com/ultra-pass-passivation.php

It's important to understand the difference between this process and the act of electropolishing. In some instances the two are identical, but in other cases the polishing won't necessarily remove the reactivity of the surface. In these instances a different process is used and the results are basically the removal of scale, removal of corrosion, and prevention of corrosion. It can also render a surface much smoother and more suitable for different tasks. When used as part of a multi-step process it can passivate surfaces and prepare them for experiments.

Basically, these processes are required for any facility that utilizes stainless steel or other materials, particularly those that require perfectly smooth, totally nonreactive surfaces. It's not something you can just go rent a machine for, either. You'll have to actually hire a professional to handle the process for you and make sure that you get the best results. Their expertise and their professional tools will ensure that all of your surfaces are in top shape and are ready to go whenever you need them. Routine maintenance involving these two procedures is absolutely vital for most facilities, and easier to find than you may think.

For more details about electropolishing please clickhere:

Sunday, September 23, 2012

Passivation – Maintenance You Need


When it comes to today's labs, industrial facilities, and other installations, maintenance and cleanliness are vital. It's important to take the time to maintain all of the various products within a lab, medical, or industrial setting but due to the nature of the materials and the nature of the work there may be special steps needed. Chemical reactions are often used to guard against corrosion, help clean various products, and generally protect all equipment so that it maintains the highest level of functionality. If you're involved in the management of any type of facility that uses stainless steel, nickel, and other metallic surfaces and tools then you'll need to look into these processes.

Go for more information about Passivation http://www.astropak.com/ultra-pass-passivation.php

Passivation is one of the more common processes that are used today, especially by medical facilities, labs, and other research intensive fields. The different tools, machines, and materials involved in this field will be made from stainless steel in most cases, and the chemical process that is used to clean them will not only ensure that they are in the best level of hygiene but also that no corrosion occurs. It's important that this takes place because not only can corrosion cause serious issues and ruin results of tests, but it can also impact the longevity of expensive tools.

To electropolishing a material is another type of chemical process that is frequently used. Essentially this is a type of process that involves the use of electrical currents to remove material from metal. It's often implemented to deburr, polish and passivate materials and is necessary to improve the lifespan of most materials, restore them to their former states, and keep them clean. When material buildup, tarnish, and other issues arise it's the best way to remove the problems and ensure that the material in question remains in its prime condition.

 Simply put, the materials used in these industries and the different machines and tools are expensive and need to be treated as such. It's vital that you understand the different ways to monitor them and that you take the time to use them when needed. It's a simple process to understand but one that is far too vital to ignore. Plenty of experts can provide the services to you and keep the products, tools, and machines you use on a daily basis in great shape. Most companies schedule routine visits to ensure that everything remains in the best possible shape and that it lasts for decades.

Go for more information about electropolishing http://www.astropak.com/electropolishing.php 

Thursday, September 13, 2012

Passivation of stainless steel - Cleaning Up

Passivation of stainless steel
Astro Pak Corp.’s first customers, and for decades its biggest, were the Southern California aerospace companies building the rockets and command modules that shot astronauts to the moon.
But a more recent customer had more terrestrial rides in mind: Astro Pak has worked on several attractions at Disneyland, including the Indiana Jones ride, Ariel’s Undersea Adventure, and the recently opened Cars Land at Disney’s California Adventure.
Founded in Downey in 1959, Astro Pak specializes in passivation and precision clearing of sensitive and high-tech parts, from the satellite components to nuts and bolts used in jet engines. It still handles parts for aerospace companies at its Downey clean room, but most of the company’s work is now in other industries, from electronics to pharmaceuticals, and yes, even amusement parks.
That broad range of offerings has helped Astro Pak do what many Southern California aerospace contractors have failed to do over the past few decades: stay in business and grow.
In fact, the company this year opened an expanded clean room in Downey and a new clean room in Chesapeake, Va., to meet growing demand for its precision cleaning services. In fact, despite booms and busts, the company said it now has about five times the revenue and four times the workers it employed before the fall of the Soviet Union.
Precision cleaning  http://www.astropak.com/precision-cleaning-clean-room.php
“If we hadn’t diversified, we have gone out of business at the end of Apollo and again at the end of the Cold War. You have to have enough diversity to balance the ebbs and flows,” said Ken Verheyen, Astro Pak owner and president.
Today, aerospace customers represent only about 10 percent of Astro Pak’s business –about the same percentage of as water and wastewater treatment customers. Most of the company’s business is in the pharmaceutical and biotech industries.
By contrast, many small aerospace firms that were never able to expand their offerings were closed, acquired or downsized, laying off thousands of employees. Los Angeles County had 189,000 aerospace workers in 1990, a number that gradually shrank by nearly 70 percent to 59,700 by 2010, according to the Los Angeles County Economic Development Corp.
Race from space
Such losses are likely to continue, if not accelerate, as the Department of Defense cuts billions from its budget. Those cuts will be especially hard on small companies with narrow offerings, said Kimberly Ritter-Martinez, an associate economist with the LAEDC.
“As the aerospace industry has gone through ups and down, smaller suppliers and contractors have been a lot more sensitive to Pentagon budget cuts,” Ritter-Martinez said. “Unlike Northrop and Boeing, they don’t have a broad mix of products. They’ve had more trouble diversifying.”
When it was founded in Downey in 1959, Astro Pak worked exclusively on projects related to the U.S. space program. Parts going into the lunar lander, the Apollo command capsule and other space-bound equipment had to be free of oils and particles that could cause delicate equipment to break down.
Passivation That meant cleaning parts at Astro Pak’s Downey clean room and dispatching workers to launch sites to clean fuel lines. But as the Apollo program started to wind down in the 1970s, Astro Pak founded itself looking for more work. The company found it with Navy contracts, cleaning parts for deep-diving and salvage equipment. This was big business –until the early ‘90s.
“At the end of the Cold War, the Navy’s diving capability was substantially reduced. That was almost like a light switch of revenue that turned off,” Verheyen said.
Today, the company still does aerospace and defense work, such as cleaning parts of a new rocket engine being developed by Canoga Park’s Pratt & Whitney Rocketdyne, but it has put its precision-cleaning know-how and its clean-room facility to good use in growing high-tech industries.
It first breakthrough was in the biotech and pharmaceutical industries. Verheyen said it was difficult for the company, unknown outside of the aerospace sector, to attract customers. So rather than sell customers on the company’s aerospace heritage and capabilities, Verheyen created an internal team to figure out what biotech and pharmaceutical customers needed and to build a fresh marketing approach.
“Customers are dying to have people really focus on and understand the requirements of what they need,” he said. “Oftentimes, companies come in and slightly adapt what they’re doing somewhere else and miss the true need of the industry.”
LAEDC’s Ritter-Martinez said Astro-Pak’s much broader portfolio is a rarity among firms formerly dependent on aerospace, but she also noted that it has likely been easier for Astro Pak, a service provider, to reach into new markets than it would be for other companies, especially manufactures.
While Astro Pak once specialized in aerospace work, its cleaning procedures could be adapted relatively easily to other products and industries without investing much new capital or hiring new talent. That’s a more difficult transition for companies that make specific widgets that go into a satellite or a jet.
“A small supplier might have just one or a handful of products,” Ritter-Martinez said. “If you’re a manufacturer and all your machinery is geared toward making a product for Boeing, you’re kind of locked in with one large customer.”
Even for companies that make products that can be used in other industries, it’s still difficult for small firms to find customers outside of the largely insular aerospace sector, said Erin Dyer, quality control manager for Glendale parts maker Accurate Dial & Nameplate Inc.
The company, which makes serial number badges and faceplates for machinery, sells mostly to aerospace manufacturers and wants to grow into the rail car and wind turbine markets. But it has no marketing department or outside sale force to reach out to those customers.
“We’ve built our business on referral and our good reputation,” Dyer said. “We only have 21 employees. The hardest part is taking time from your daily duties to create marketing materials so you can introduce your company to new customers.”
Big portfolio
Nevertheless, Astro Pak’s diversification didn’t stop with biotech and pharmaceuticals, though those industries now supply about 65 percent of the company’s revenue.
Verheyen said the company is getting more contracts in the food and beverage industry. Astro Pak recently started working on a cleaning project for Modesto’s E&J Gallo Winery.
The company also has occasional work in other industries. It was recently contracted to clean ore-processing systems at a gold mine in the Dominican Republic and does occasional work for Disneyland, where it flushes hydraulic lines that control several rides and attractions.
“Those are high-purity systems. You have to make sure they’re extremely clean,” said Jerry Knepper, Astro Pak’s vice president of sales. “It could damage the pumps if particles (in the lines) are too big.”
Much of Astro Pak’s work is performed at the customer’s location, where a field team might clean and flush lines that transfer chemicals within a pharmaceutical plant. But its largest employment base remains in Downey, where 50 of its 190 employees work. (Executive offices were moved to Costa Mesa several years ago.)
The company’s most recent business line is in sterilizing hospital rooms and surgical suites. Astro Pak in 2010 created a separate company, SixLog Corp., that uses a kind of aerosolized hydrogen peroxide to kill bacteria and other biological contaminants in rooms and on equipment.
“I can’t remember having a slow year here,” Verheyen said. “Our revenue is up 20 percent this year to date. That’s stinking healthy.”

  Go for more information about Passivation http://www.astropak.com/ultra-pass-passivation.php

Tuesday, August 14, 2012

Electropolishing vs. Passivation

What is electropolishing and how is it different from passivation? Electropolishing is an electrolytic process that expels contaminants from metal parts for cleanliness while preventing particles from adhering. Electropolishing, a non-mechanical process, is ideal in metal finishing because it can be used on objects with complex shapes. Passivation is a non-electrolytic process that removes iron from stainless steel surfaces to prevent rust and corrosion. As a non-electrolytic process, passivation does not require the usage of an electrical current. Solutions like citric and nitric acids are used instead to create a film and remove free iron and foreign matter from metal surfaces. Electropolishing and passivation are two different approaches in eliminating and preventing rust and corrosion on metal surfaces.
Go For More About Electropolishing http://www.astropak.com/electropolishing.php
Electropolishing involves the process of using electrochemical finishing techniques to obtain a corrosion-resistant finish for metals and alloys. Essentially, electropolishing is a technique where a combination of chemicals and an electrical current is utilized to carefully eliminate imperfections and contaminants of metal part surfaces. This particular process is an alternative to abrasive fine polishing. Your washing machine’s stainless steel drum or surgical steel devices are examples of electropolished surfaces. Electropolishing can be used to polish, deburr, and passivate metal components. Many benefits can be observed with electropolishing including: outstanding finished appearance, corrosion-proof surface, surface smoothness, reduced maintenance costs, and enhanced cleanability.
PassivationPassivation, on the other hand, is a chemical process applied to stainless steel surfaces. During machining, stainless steel may cause imperfections from iron being embedded or smeared onto the surface. Since iron corrodes, the stainless steel surface, if left untouched, will cause rust spots to appear. A corrosive reaction can occur between the two different metals but the condition can be negated with passivation. Passivation allows stainless steel surfaces to be more passive and resistant to corrosion. To make the stainless steel area more passive, a “film” is created so that surface loses chemical reactivity. When exposed to air, the stainless steel undergoing passivation will form a chemically inactive surface. Many benefits can be observed through passivation like sanitary and safety. Passivation is a highly desired process because it produces a low corrosion rate in stainless steels.
Using a combination of electropolishing and passivation will allow metals to obtain the ultimate corrosion-resistant and shiny surface. Not only does electropolishing for metals and alloys produce a surface finishing resistant to corrosion, enhanced durability, improved performance, and a smoother and aesthetically pleasing surface can gained from this electrolytic process. Passivation, on the other hand, is not an effective method for removing surfaces that has been welded or heat treated. In other words, passivation does not change or brighten the metal’s appearance—it will only give surfaces a clean finish. Electropolishing would be the more appropriate approach when aesthetics are necessary.
Go for more information about Passivation http://www.astropak.com/ultra-pass-passivation.php