Blog of Adtepu Tek Representatives

Molybdenum disulfide gives excellent performance to our Moly Plate, Moly-Lit, Moly-Grease Plus & Moly Spray

admin — Tue, 15 Mar 2011 07:24:15 +0000

Molybdenum disulfide is the inorganic compound with the formula MoS2. This black crystalline sulfide of molybdenum occurs as the mineral molybdenite. It is the principal ore from which molybdenum metal is extracted. The natural amorphous form is known as the rarer mineral jordisite. MoS2 is less reactive than other transition metal chalcogenides, being unaffected by dilute acids. In its appearance and feel, molybdenum disulfide is similar to graphite. Indeed, like graphite, it is widely used as a solid lubricant because of its low friction properties, sometimes to relatively high temperatures. It also bonds very well to the surface of the metal. If used in a spray form it will dry after a few minutes and will be almost impossible to get off. It has a low coefficient of friction like Teflon but handles a lot wider range of temperatures. This is the first choice as a lubricant for bearings, Chains, Cables, and anything in motion.

Original post blogged on b2evolution.

Taconic offers Thermal Spray Tapes

admin — Fri, 22 Oct 2010 05:05:22 +0000

Taconic has developed an extensive range of adhesive tapes for the Thermal Spray industry to complement its popular PTFE coated products. These adhesive tapes have been specifically designed to perform in applications ranging from Flame and Plasma Spray to HVOF and Grit Blast. Our standard rubber topped thermal masking tape is our A1084 and our new higher adhesion version is the A1111. We have an economical option for masking overspray areas which is our 6605-07 or our 6605-10. Overspray refers to the application of any form of paint, varnish, stain or other non-water soluble airborne particulate material onto an unintended location. This concept is most commonly encountered in graffiti, auto detailing, and when commercial paint jobs drift onto unintended objects. We also have two ply fiberglass with adhesive which is out A1101.

Original post blogged on b2evolution.

What is the equivalent products to the Loctite 545 and Loctite 569

admin — Thu, 26 Aug 2010 08:12:17 +0000

Anti Seize Technology AST-SEAL PH is the same as Loctite 545. This is for both Hydraulic and Pneumatic Close Fitting Thread Sealing Sealing and Securing Applications. It has a unique Purple Color. Anti Seize Technology AST-SEAL HYD is the same as Loctite 569. his is for only Hydraulic Close Fitting Thread Sealing Sealing and Securing Applications. It has a brown color.

Original post blogged on b2evolution.

What initial questions should be asked when selecting an adhesive.

admin — Sun, 22 Aug 2010 20:04:44 +0000

At the initial-stage of understanding the customer’s required performance properties our Adhesive Representatives cover this partial checklist: a. What is the product’s function and the specific polymer usage therein? b. What are the specific substrates to be bonded? c. What mechanical forces, shock & vibration will the assembly be subjected to? d. What is the maximum service temperature range and normal operating temperature range for the component? Is it subjected to any thermal shock or cycling? e. Will the bond be exposed to any chemicals or sterilants? f. Do you need to meet any specific standards or approvals such as USP Class VI biocompatibility, FDA food grade, NASA low outgassing, or UL94V-0 flame retardant g. Are there any required optical characteristics? h. Do you require specific thermal and/or electrical properties? i. Are there specific viscosity requirements? j. What are the manufacturing constraints cure time, personnel, occupational safety etc. k. What mixing, dispensing and curing equipment do you already have? Do you have any surface preparation equipment?

Original post blogged on b2evolution.

Molybdenum Disulfide is the best lubricant for Pins and Latches in Electrical Boxes

admin — Thu, 19 Aug 2010 00:12:50 +0000

The Pins and Hinges of Electrical Boxes for Electric Companies require lubricant which can withstand up to 50,000 psi, has excellent lubrication, wicking ability, and does not attract dust. Our Moly Spray made with Molybdenum Disulfide is chosen because it withstands up to 100,000 pounds of pressure, is an excellent lubricant like Teflon, the spray form wicks well into the pins and latches, and it forms a dry film in minutes so it does not attract dust.

Original post blogged on b2evolution.

Trailer Manufacturers have stronger and faster assemblies using more adhesives and less mechanical fasteners

admin — Mon, 02 Aug 2010 17:11:43 +0000

http://adteputek.com/b2evolution/blog2.php/2010/08/02/trailer-applications-have-stronger-and-f

Please go to the below link related to using Loctite in the construction of trailers: http://www.gluemytrailer.com/video.html You can use the Parson Adhesives products in place of Loctite in the following applications: 1) Partite 7504 can be used on all trailer assembly applications for Loctite H4500 & Loctite H8600 2) Parbond 901 can be used in place of Loctite 5510 & Loctite 5570 3) Sonlok 3440 substitutes both the Loctite 7088 Primer & Loctite 2033 Threadlocker

Original post blogged on b2evolution.

What to take into consideration when selecting Hydraulic Fluid.

admin — Sat, 27 Mar 2010 19:54:08 +0000

Today’s hydraulic fluids serve multiple purposes. The major function of a hydraulic fluid is to provide energy transmission through the system which enables work and motion to be accomplished. Hydraulic fluids are also responsible for lubrication, heat transfer and contamination control. When selecting a lubricant, consider the viscosity, seal compatibility, basestock and the additive package. Three common varieties of hydraulic fluids found on the market today are petroleum-based, water-based and synthetics. 1. Petroleum-based or mineral-based fluids are the most widely used fluids today. The properties of a mineral-based fluid depend on the additives used, the quality of the original crude oil and the refining process. Additives in a mineral-based fluid offer a range of specific performance characteristics. Common hydraulic fluid additives include rust and oxidation inhibitors (R&O), anticorrosion agents, demulsifiers, antiwear (AW) and extreme pressure (EP) agents, VI improvers and defoamants. Mineral-based fluids offer a low-cost, high quality, readily available selection. 2. Water-based fluids are used for fire-resistance due to their high-water content. They are available as oil-in-water emulsions, water-in-oil (invert) emulsions and water glycol blends. Water-based fluids can provide suitable lubrication characteristics but need to be monitored closely to avoid problems. Because water-based fluids are used in applications when fire resistance is needed, these systems and the atmosphere around the systems can be hot. Elevated temperatures cause the water in the fluids to evaporate, which causes the viscosity to rise. Occasionally, distilled water will have to be added to the system to correct the balance of the fluid. Whenever these fluids are used, several system components must be checked for compatibility, including pumps, filters, plumbing, fittings and seal materials. Water-based fluids can be more expensive than conventional petroleum-based fluids and have other disadvantages (for example, lower wear resistance) that must be weighed against the advantage of fire-resistance. 3. Synthetic fluids are man-made lubricants and many offer excellent lubrication characteristics in high-pressure and high- temperature systems. Some of the advantages of synthetic fluids may include fire-resistance (phosphate esters), lower friction, natural detergency (organic esters and ester-enhanced synthesized hydrocarbon fluids) and thermal stability. The disadvantage to these types of fluids is that they are usually more expensive than conventional fluids, they may be slightly toxic and require special disposal, and they are often not compatible with standard seal materials. Fluid Properties When choosing a hydraulic fluid, consider the following characteristics: viscosity, viscosity index, oxidation stability and wear resistance. These characteristics will determine how your fluid operates within your system. Fluid property testing is done in accordance with either American Society of Testing and Materials (ASTM) or other recognized standards organizations. 1. Viscosity (ASTM D445-97) is the measure of a fluid’s resistance to flow and shear. A fluid of higher viscosity will flow with higher resistance compared to a fluid with a low viscosity. Excessively high viscosity can contribute to high fluid temperature and greater energy consumption. Viscosity that is too high or too low can damage a system, and consequently, is the key factor when considering a hydraulic fluid. 2. Viscosity Index (ASTM D2270) is how the viscosity of a fluid changes with a change in temperature. A high VI fluid will maintain its viscosity over a broader temperature range than a low VI fluid of the same weight. High VI fluids are used where temperature extremes are expected. This is particularly important for hydraulic systems that operate outdoors. 3. Oxidation Stability (ASTM D2272 and others) is the fluid’s resistance to heat-induced degradation caused by a chemical reaction with oxygen. Oxidation greatly reduces the life of a fluid, leaving by-products such as sludge and varnish. Varnish interferes with valve functioning and can restrict flow passageways. 4. Wear Resistance (ASTM D2266 and others) is the lubricant’s ability to reduce the wear rate in frictional boundary contacts. This is achieved when the fluid forms a protective film on metal surfaces to prevent abrasion, scuffing and contact fatigue on component surfaces. Ten Steps to Check Optimum Viscosity Range When selecting lubricants, ensure that the lubricant performs efficiently at the operating parameters of the system pump or motor. It is useful to have a defined procedure to follow through the process. Consider a simple system with a fixed-displacement gear pump that drives a cylinder (Figure 2). 1. Collect all relevant data for the pump. This includes collecting all the design limitations and optimum operating characteristics from the manufacturer. What you are looking for is the optimum operating viscosity range for the pump in question. Minimum viscosity is 13 cSt, maximum viscosity is 54 cSt, and optimum viscosity is 23 cSt. 2. Check the actual operating temperature conditions of the pump during normal operation. This step is extremely important because it gives a reference point for comparing different fluids during operation. Pump normally operates at 92ºC. 3. Collect the temperature-viscosity characteristics of the lubricant in use. The ISO viscosity rating system (cSt at 40ºC and 100ºC) is recommended. Viscosity is 32 cSt at 40ºC and 5.1 cSt at 100ºC. 4. Obtain an ASTM D341 standard viscosity-temperature chart for liquid petroleum products. This chart is quite common and can be found in most industrial lubricant product guides (Figure 3) or from lubricant suppliers. 5. Using the viscosity characteristics of the lubricant found in Step 3, start at the temperature axis (x-axis) of the chart and scroll along until you find the 40-degree C line. At the 40-degree C line, track upward until you find the line corresponding to the viscosity of your lubricant at 40ºC as published by your lubricant manufacturer. When you find the corresponding line, make a small mark at the intersection of the two lines (red lines, Figure 5). 6. Repeat Step 5 for the lubricant properties at 100ºC and mark the intersection point (dark blue line, Figure 5). 7. Connect the marks by drawing a line through them with a straight edge (yellow line, Figure 5). This line represents the lubricant’s viscosity at a range of temperatures. 8. Using the manufacturer’s data for the pump’s optimum operating viscosity, find the value on the vertical viscosity axis of the chart. Draw a horizontal line across the page until it hits the yellow viscosity vs. temperature line of the lubricant. Now draw a vertical line (green line, Figure 5) to the bottom of the chart from the yellow viscosity vs. temperature line where it is intersected by the horizontal optimum viscosity line. Where this line crosses, the temperature axis is the optimum operating temperature of the pump for this specific lubricant (69ºC). 9. Repeat Step 8 for maximum continuous and minimum continuous viscosities of the pump (brown lines, Figure 5). The area between the minimum and maximum temperatures is the minimum and maximum allowable operating temperature of the pump for the selected lubricant product. 10. Find the normal operating temperature of the pump on the chart using the heat gun scan done in Step 2. If the value is within the minimum and maximum temperatures as outlined on the chart, the fluid is suitable for use in the system. If it is not, you must change the fluid to a higher or lower viscosity grade accordingly. As shown in the chart, the normal operating conditions of the pump are out of the suitable range (brown area, Figure 5) for our particular lubricant and will have to be changed. Consolidating Hydraulic Fluids The purpose of hydraulic fluid consolidation is to reduce complexity and inventory. Caution must be observed to consider all of the critical fluid characteristics required for each system. Therefore, fluid consolidation needs to start at the system level. Consider the following when consolidating fluids: * Determine the specific requirements of each piece of equipment. Consider all the normal operating limits of your equipment. * Talk to your preferred lubricant representative, like Adtepu Tek Representatives, as you can gather and relay important information about the lubrication needs of your equipment. This will ensure that your supplier has all the products you require. Don’t sacrifice system requirements to achieve consolidation. Also, observe the following hydraulic fluid management practices. * Implement a procedure for labeling all incoming lubricants and tagging all reservoirs. This will minimize cross-contamination and assure that critical performance requirements are met. * Use a First-In-First-Out (FIFO) method in your lubricant storage facility. A properly executed FIFO system reduces confusion and storage-induced lubricant failure. Hydraulic systems are complicated fluid-based systems for transferring energy and converting that energy into useful work. Successful hydraulic operations require the careful selection of hydraulic fluids that meet the system demands. Viscosity selection is central to a correct fluid selection. There are other important parameters to consider as well, including viscosity index, wear resistance and oxidation resistance. Fluids can often be consolidated to reduce complexity and material storage cost. Caution should be exercised to avoid sacrificing fluid performance in an effort to achieve fluid consolidation.

Original post blogged on b2evolution.

Industrial Cyanoacylates versus Medical Cyanoacrylates

admin — Tue, 02 Mar 2010 10:07:44 +0000

Methyl Cyanoacrylate, for metal bonding, and Ethyl Cyanoacrylate, for plastic and rubber bonding, are used principally in industrial applications. Octyl Cyanoacrylates and Butyl Cyanoacrylates are used principally in Medical Applications. Butyl esters provide stronger bond, but are rigid. Octyl ester, while providing weaker bond, are more flexible. Medical Adhesives need to be cause less sensitivity issues to skin.

Original post blogged on b2evolution.