New Surface Science

If you are the casting of very complex material filled with glass, you'd think with hard chrome will suffice, since it is a classic, reliably protecting your mold to both corrosion and abrasion. However, hard chrome, with all its benefits do not tend to plate uniformly detailed areas such as ribs and bosses. This is a trick called Nihard, a coating of nickel-cobalt alloy bullets developed to overcome this limitation. To our knowledge, no other similar product.

Nickel-cobalt can be an economical alternative to hard chrome. Hard chrome requires the construction of an anode according to coat the pan. The details in the mold, the more time it takes to build the anode and the process becomes more expensive. Nihard requires no anode, and because of its chemical properties, records much more uniform. Cobalt gives a good wear resistance, but its hardness is 62 RC, 10 points lower than hard chrome. Is it worth paying extra for protection wear than hard chrome? You must consider the equipment being driven in shape, what percentage of glass? Is it a bigger problem of corrosion wear?

Hard chrome plated and has two solutions Nihard very good for longevity, but for very high wear conditions, offers an even more recent chrome diamond called exceptional protection. Developed by bullets, he has a score above the 85th RC is a matrix composites of chromium containing a dispersion of nanosized diamond particles spherical. Since diamonds are superior in hardness, this coating offers protection beyond the norm. It exceeds the coating of titanium nitride, although both have the same notes Rockwell, because he will not compromise the dimensional integrity of coated tools. Nihard used on about 130 F. titanium nitride (TiN) requires application temperatures of 800 F or more.

Diamond-chrome can be quenched and tempered plate, heat-treated, or hiilikarkaisuteräs and other basic materials such as aluminum, beryllium copper, brass and stainless steel. APPLICATIONS are core, cavity, slides, ejection sleeves, rotating and turning the hearts. Its anti-irritant properties are particularly advantageous for moving cores and slides.

Diamond-chrome is also peeled off and has no negative influence on the base material, which saves time and money when maintenance is needed. Tin is peeled off so good, but it may take several days to remove a Polish solution or peroxide. Diamond-chrome can be removed in minutes by using reverse electrolysis in a caustic solution. In addition, diamond-chrome deposited on a controlled thickness of 20 millionths of an inch to 0.001 inch TiN generally used only in thin deposits of a few millionths of an inch. Diamond-chrome can coat complex details, while the tin has a very limited coverage of complex details. While TiN is highly lubricious, with a coefficient of friction of 0.4 (against steel), diamond-chrome has a COF of 0.15, almost three times more lubricant.

They offer a combination of an excellent release properties and high resistance to abrasion, heat and corrosion, bales of newly appointed Niborio coating specialties. And 'nickel-phosphorous-containing particles of boron nitride in the matrix. This is a very low coefficient of friction (0.05 against steel) and the hardness of 54 RC, which can be increased to 67 RC after heat treatment, a unique feature. Nickel-boron nitride can be applied to any substrate only 185 F, and can be easily removed without compromising the basic material. Although more expensive than nickel-PTFE coating, Niborio run up to 1250 F, which is a multiple of 500 F, the upper limit of all the coatings based on PTFE.

It 'just Niborio catalytic process does not require the anode, which saves time and money. Also, do not Niborio compromising the thermal conductivity of the mold. Applications are open through the heart of the closure, with shorter cycle times are required.

Where high lubricity to the depth of rib, nuclei project zero, textured surfaces and "sticky" polymers, a layer of PTFE Nicklon bullets nickel compounds release will greatly improve a bit and improve the flow of resin to a 4% 8% for shorter cycle times. Your COF is 0.10 against steel.

It should be noted that the application of pure PTFE mold adds high lubricity, but only a very short-term benefit. PTFE itself is not the hardness, so that will not last. But the standard deviation of 25% by volume PTFE co-deposit with nickel results of 45 RC hardness greater wear.

Source: www.impreglon.com/

The DuPont Coatings

Teflon ® PTFE resin fluropolymer was discovered in 1938 by DuPont chemist Roy Plunkett. Since then, DuPont has developed a wide range of industrial coatings that carry the brand name Teflon ®. DuPont Teflon ® industrial coatings have received the approval of a wide range of applications. Many of Teflon ® coatings are FDA-compliant and can be used in food contact applications.

DuPont Teflon ® industrial coatings can be used for aluminum, carbon steel, stainless steel, alloy steel, brass, magnesium and other metals, as well as non-metallic colors, such as glass, fiberglass, rubber and some plastics. Heat treatment is then required to take care of coated product.

Plas-Tech is a long list of industries. The reason we serve many industries are due to different characteristics of Teflon ® and other fluoropolymer coatings we apply. Did you know that besides having the lowest coefficient of friction of the solid material known to man that Teflon ® is non-wetting, it has a high dielectric strength, chemical resistance, almost universal, and in many cases heat resistance to 500 ° F.

Very few substances is permanently attached to a Teflon ® surface. While sticky materials may show some temporary membership, almost all substances release easily.

Teflon ® coating on the belt of food prevents the accumulation of food debris and allows easy cleaning.

The combination of extreme low temperature stability and extremely high (-450 ° C to + 550 ° F) advocates the use of Teflon ® in a wider temperature range than any other organic coating material.

Teflon ® coated extrusion dies extrusion rates that allow more and better surface finish is an example of an application at high temperatures where other coatings can not be used.

Friction of Teflon ® is the range of 0.03 to 0.15, depending on load, sliding speed and special Teflon ® finish used.

Threaded that plugs must be removed and back in position often lubricated with Teflon ® to prevent and to allow re-sealing.

Teflon ® is unaffected by most chemical environments. The only chemicals known to affect Teflon ® finish is certain alkaline and more reactive fluorinating agents.

Metal seals are coated with Teflon ® shows improved sealing properties due to the malleability of Teflon ®.

New Teflon ® compounds have been developed that can be used for the elastomeric "O" rings and seals.

Source: www.impreglon.com/

THE CORROSION PROTECTION

Zinc has unique properties and is used in their applications. The predominant use of zinc (50-60%) is the corrosion protection, in particular, galvanized, which is the coating of steel with zinc metal to protect against corrosion. Zinc is a very reactive metal (less reactive than magnesium or aluminum, but more reactive than iron) and it may seem strange that this should be able to protect steel from corrosion that could be imagined that zinc is more vulnerable and need all the protection you can get! However, when atmospheric oxygen reacts with the zinc surface, a very dense and impermeable layer of zinc oxide is formed and it is this physical barrier that protects the surface of zinc further attacks.

An article coated with zinc, such as a highway guardrail, a standard lighting or a garbage bomb galvanized quickly loses its shiny silver redesigned and is dull gray, and this is due to the formation of this oxide layer zinc, which is a natural aging process. The physical barrier of the zinc coating and its surface oxide which protects the steel. The interface between the zinc and steel is not really just a metal directly on one another. The galvanizing process creates a reaction between zinc and steel, means that a zinc-iron compound formed between steel and zinc, and this provides another barrier to corrosion and the unbreakable bond between zinc and steel. Zinc does not flake away from the steel in the way the paint.

There are two main classifications of zinc, zinc-General and continuous galvanizing. In general, galvanized steel post, after cleaning, is immersed in a bath of molten zinc and is then removed and emptied, the zinc coating will soon be fixed and the article can then be processed normally. General galvanizing may be used for large objects, like steel beams and structures as well as small items such as nuts, bolts and washers. Zinc is commonly used in zinc containing a small amount of lead deposited on the bottom of the galvanizing bath, and helps to protect the zinc bath in the attack and provides a surface of the liquid in which all non-iron-zinc compounds can be more easily collected and removed.

Zinc can also be applied as a continuous process of electrolytic zinc, although this process has been used less than a continuous hot dip galvanizing. Zinc can also be injected into the molten steel to provide protection, and this method has been used to protect large structures such as bridges. Probably the protection is not as good as if the parts were galvanized the original production, because the preparation and the application may not be as well-controlled building.

Source: www.impreglon.com/

About The CO2-Coating

DSM has teamed up with Novomer, a company in Waltham, Massachusetts, in which it holds a minority stake, to jointly develop a coating and adhesive resins using carbon dioxide (CO2) as raw material.

In 2007, this development agreement followed by a cooperation and investment by DSM Venturing into Novomer. A joint development project is expected to benefit from DSM access to markets and technology, as well as the technique of polymerization of CO2 Novomer.

Novomer develop chemistry and process technology to produce polymers from CO2 and propylene oxide (PO), while DSM will convert the polymers and resins in the formulation for applications such as coatings, adhesives and graphic arts. Companies have found the initial results encouraging and suggest that this project could lead to new and better properties of the coatings applied.

Once developed, the first polycarbonate resin used in applications such as paints, adhesives, inks and certain. The resin is made up to 50% by weight of CO2, so that not only remove CO2 from the atmosphere, but you also need the use of fossil fuels, raw materials and require less energy to produce than existing alternatives.

The production of this new material could begin next year and while the initial volume will necessarily be modest, it is technically possible that the new polycarbonate resin will become a common ingredient of coatings and other applications where conventional polycarbonates are used.

Rob van Leen, Chief Innovation Officer, DSM, said:  "DSM and Novomer trying to develop the first polymer is more than a decade to reach the finish this traditional industry is an exciting development may lead to a breakthrough that could change the industry, adding to the problems of cost, these innovative resins to address and performance on environmental issues. Therefore, they fit perfectly in the DSM "people, planet and profit approach '."

DSM and Novomer development project provides a fascinating insight into future production.

Climate change is a reality, and forward-thinking manufacturers hope to replace fossil fuels based on building blocks with more efficient alternatives that reduce and, ideally, prevent greenhouse gas emissions.

This may mean developing products and processes that produce the same end result of reducing greenhouse gas emissions, or a more fundamental shift away from fossil fuels in favor of bio-materials such as plant material. This has already resulted in biofuels and other materials from biorenewable sources.

While the jump from materials based on fossil fuels to bio-based materials represent an evolutionary transformation of the chemical industry, DSM and Novomer, cooperation goes further, since polycarbonate resin developed by the two parties use actual CO2, which should not be "grown", but can be extracted directly from the atmosphere.

Source: www.impreglon.com/