What is a Two-Stage Rotary Vane Vacuum Pump? A Two-Stage Rotary Vane Vacuum Pump is an oil-sealed vacuum pump used in many laboratory, scientific and production vacuum systems. These pumps have both a high and low-pressure vacuum stage, which improves the vacuum pump performance. The rotor chambers are lubricated with a specifically formulated oil which acts as a sealant and lubricant between the sliding vanes, pump rotor and stator. Most laboratory rotary vane pumps are direct drive coupled pumps and typically get to a base pressure of near 1 x 10-3 torr (1.3 mbar).Get more news about Two Stage Rotary Vane Vacuum Pump Seller,you can vist our website! pumping action works on the principle of reducing the gas by gradually increasing the pump volume within the pumping cavity. The vanes rotate inside the stators and slide within the rotors. They are sealed by a specifically formulated, low vapor pressure oil, which acts as a sealant, lubricant, and coolant for the vacuum pump (You can find the right oil for your pump here). The two-stages are the high pressure and the low pressure. Gas enters the inlet or suction chamber (high pressure stage) and is transferred to the low-pressure stage where it is immediately compressed by the vane of the rotor and expelled to atmospheric pressure. The second stage improves base pressure or vacuum level of the pump. What are the Advantages and Disadvantages of using Two-Stage Rotary Vane Vacuum Pumps? When compared to a single-stage oil-sealed rotary vane vacuum pump, two-stage vacuum pumps create lower vacuum levels, along with higher volumetric flow rates over a wider pressure range. The pumping speed is essentially the same for both pumps in the rough vacuum range, but as the absolute pressure passes 1 Torr, the two-stage vacuum pump continues to maintain its pumping speed, whereas the single-stage vacuum pump starts to decline. Based on the graph provided, a single-stage pump would be adequate for vacuum levels down to about 1 Torr and would be lower cost (about 30% to 50% less. On the other hand, the performance of a single-stage vacuum pump begins to decrease after 1 Torr, so a two-stage pump becomes the obvious choice. The graph shows typical pumping speeds of single and two-stage vacuum pumps with and without the gas ballast valve open. Why is a Gas Ballast Valve Necessary and When Should I use it? Using a gas ballast is helpful when pumping contaminants like water vapor, acetone, alcohols, and other condensable vapors. A gas ballast valve admits air into the vacuum pump to assist in discharging condensable gases before they condense inside the pump. This process protects the vacuum pump, but it will decrease the performance of the pump as seen in the graph provided above. What is the Right Vacuum Pump Oil for Two-Stage Rotary Vane Vacuum Pumps? If your vacuum pump is always getting contaminated, requiring you to change the oil often, 19 Grade is the best vacuum pump oil option for you. This vacuum oil is the lower-priced option but still has a premium performance. This is a higher viscosity, designed for direct-drive rotary vane vacuum pumps, and ideal for most general-purpose applications. The low vapor pressure reduces system back streaming and thermal stability provides resistance to oxidation and sludge formation. 20 Grade is an upgraded oil from the 19 Grade. It is a severely hydro-treated paraffinic oil that is double distilled through a molecular distillation process to remove light end fractions. 20 Grade is highly saturated and contains less than 0.01% sulfur similar to technical white oils. Its high molecular weight and viscosity index provides longer service life and reduced build-up of varnish and carbonized oil on the internal pump components. If you want your oil to last a long time so you don't have to spend time changing it, Elite Z is the option for you. This oil is double distilled to exhibit the highest performance for mechanical pumps. EZ Grade is a full synthetic hydrocarbon vacuum fluid that is very resistant to thermal and chemical attacks and provides longer oil life and superior protection to the vacuum pump.

Shrink Wrapping Machines We supply a wide range of shrink-wrapping machines, including chamber machines, heat shrink tunnels, and L-sealing machines. Our machines can encase your items in a secure, close wrap of cling film that keeps them fresh and contaminant-free. Consequentially, shrink wrapping is a more robust alternative to other wrapping solutions. Stretch wraps are an affordable and efficient way to wrap perishable items, including food and medical supplies.Get more news about Auto Shrink Wrap Machine,you can vist our website! We supply specialist shrink-wrapping machines to businesses in many sectors. Our specialist sectors include food and beverages, manufacturing, pharmaceuticals, cosmetics, engineering, and personal care. Our shrink-wrapping machines can quickly and reliably wrap a vast number of products in a short space of time. Shrink-wrapping increases the shelf life of your products and prevents germs, bacteria and other contaminants from infiltrating your packaging. What are Shrink Wrapping Machines? Shrink wrapping machines are packaging machines that use heat to shrink a plastic film around a product. Heat is first applied to the plastic film wrapped around the product, causing it to shrink and conform to its shape. A tightly sealed package is created through this process, helping to protect the product during transportation, storage or as a high-quality display pack. Our team of packaging experts can help you find the suitable shrink-wrapping machine for your business, no matter your requirements, from high-volume L-sealing machines that can package up to 2,400 products an hour to our most affordable chamber machines. We stock a versatile range of shrink-wrapping devices and accessories for every sector and industry we operate in. If you want to cut costs, we also supply used shrink-wrap machines. There are many benefits to buying a used shrink-wrap machine. Fundamentally, it’s a simple way to keep your overheads low without compromising performance or efficiency. At Adpak, we only sell high-quality used shrink-wrap machines that we’ve verified to be in complete working order. Used packaging machines are an excellent choice for start-ups and small businesses looking to grow their operation.

The surface effect of ultrasonic vibration in double cup extrusion test Ultrasonic vibration has been widely studied because of its excellent utility and performance in the plastic forming of metals. The mechanism and effects of ultrasonic vibration on material flow and deformation have therefore become a focus for current research. Get more news about Micro Precision Cold Extrusion Part Exporter,you can vist our website! The mechanisms of ultrasonic vibration as it acts on materials include the volume effect and the surface effect. Double Cup Extrusion (DCE) testing is an ideal method for studying the surface effect but there have been few studies and some conclusions from those studies have been contradictory. For the present study, a new ultrasonic vibration-assisted DCE device was specifically designed and used for the experiment. In the tests, friction factors were calibrated and analyzed using the finite element method (FEM). The results show that ultrasonic vibration can effectively improve interface friction conditions in DCE. By changing ultrasonic loadings, an explanation was found for the ‘illusion’ that ultrasonic vibration increased interface friction, as had previously been reported. It was also shown that ultrasonic vibration exhibits a significant size effect, which can efficiently offset the negative size effect of friction in the micro-forming process. Further, it was found that the ultrasonic effect is influenced by the wall thickness of the formed part—the smaller the wall thickness, the more significant the effect of ultrasonic vibration. Ultrasonic vibration can significantly improve the plastic forming of metal, and the related technology has recently attracted a great deal of academic interest. The application of ultrasonic vibration in wire drawing (Hayashi et al., 2003), micro blanking (Liu et al., 2017), deep drawing (Malekipour et al., 2020), and single point step forming (Amini et al., 2017; Vahdati et al., 2017) processes has been widely studied. The effects of ultrasonic vibration on material flow and deformation in metal forming, and the potential mechanisms behind these phenomena, have become foci for current research. During plastic forming of metal, the mechanisms by which ultrasonic vibration acts on materials is complex, and include stress superposition, thermal softening, dislocation absorption of acoustic energy, reduction of internal and external friction, the dynamic effects of high-frequency vibration tools, thermal effects, etc. However, these effects can essentially be summarized in terms of the “volume effect” and the “surface effect”. The volume effect mainly principally refers to the reduction in material flow stress caused by ultrasonic vibration. Blaha and Langenecker (1955)were the first to discover that ultrasonic vibration reduces the yield and flow stresses of metals in tensile experiments, so the volume effect is also known as the “Blaha effect”. In tensile or upsetting experiments, friction has little effect on forming loads (Slater, 1977) and the reduction of forming load caused by ultrasonic vibration can be demonstrated intuitively. Tensile and upsetting experiments are therefore the principal methods for studying the mechanism of the volume effect. Yao et al. (2012) established a theoretical model for acoustic softening based on thermal activation theory and dislocation evolution theory, and verified the validity of the model using upsetting tests. Ahmadi et al. (2015) fabricated specimens with different grain sizes using ECAP (Equal Channel Angular Pressing) and performed ultrasonic tensile experiments. It was found that ultrasonic vibration reduced the flow stress of the specimens and that the extent of the reduction depended on the grain size. Fartashvand et al. (2017) conducted ultrasonic tensile experiments on Ti-6Al-4 V alloy to determine the relationship between ultrasonic power and yield stress reduction. Hu et al. (2018) divided the mechanism of the volume effect into three parts: stress superposition, acoustic softening and dynamic impact. When ultrasonic amplitude is small, stress superposition and acoustic softening are the main causes of flow stress reduction. When the ultrasonic amplitude is large, the dynamic impact effect occurs. Sedaghat et al. (2019) considered the application of dislocation dynamics and acoustic energy conversion mechanisms in developing a constitutive model to describe the deformation behavior of materials under ultrasonic vibration-assisted forming, validating the model using upsetting, stamping and step forming experiments.

How to Find a Running Track Near Me Becoming fit and building exercise into your lifestyle can be difficult to do. Having a personal trainer is not always appealing or can be justified on the grounds of costs. Going to gyms can be a lonely and intimidating experience, especially if only just embarking on trying to get fit and feeling body conscious – not to mention the potential commute involved just to get there. There is always someone huffing and puffing during their weightlifting session which can be quite distracting. It could be that running on a machine is just too tedious.Get more news about high quality running track,you can vist our website! Running on the roads can provide other problems because of the uneven and hard surfaces, runners are exposed to vehicle fumes which can be increased depending on the time of day, not to mention the fact that being so close to moving cars creates safety issues (if you are a road runner, dress safely). It is proven that running is one of the most efficient ways of getting fit fast and losing weight fast. If you have a running watch or other fitness tracking device this theory can easily be checked. Burning calories by running happens quickly. Running outside – with wind in your face and the interest of passing scenery – is an incomparable workout activity.. There are a number of indoor tracks that can be accessed and can be found by an internet search, but nothing beats running in the great outdoors. Add in some precise workouts, timing your 200s, 400s, or 800s with a running watch, and you can truly get a track-team-style workout for a pretty low cost — assuming you can find a track to run on! HOW TO FIND A TRACK Finding somewhere safe to run can prove difficult, so consider finding a track to run on. The advantages are the track will typically be well maintained, level and accurately measured so there is not even the need to own one of those fitness trackers because all you have to do is count how many time you travel around the track. Add the obvious advantage of no car or bike traffic whizzing by you, and you have a great setup for an excellent workout. Some may have floodlighting for your evening runs. There have been medical studies that have proven that short intense exercises for approximately 45 seconds, then stopping for a minute or two and then back to intense exercise is also good for your health and a quick way to improve fitness and lose weight. You might be inspired by Usain Bolt and want to be able to run fast so a running track will be ideal. And while running on a treadmill gets old, running on a track can give you sunlight and fresh air in your face. Even if it is colder, just put on your running jacket and start doing some quick laps.

ADDING LIGHTS TO YOUR EPOXY RESIN CREATIONS It's that time of year when the nights draw darker and the cold weather sets in, lots of people turn to candles to make their homes more cosy. But what if you could offer them a safer solution to all their cosy needs, by adding lights into some of your home ware resin creations?Get more news about custom resin desk lamp seller,you can vist our website! Adding lights to resin projects is great as a business tool you can use to sell in the darker months, but also if you’re wanting to create something for your own home they are a really great idea too. It's also getting closer to Christmas, so maybe you could even make your projects festive themed and sell them as Christmas decorations. Whatever your reason for wanting to add lights to your resin projects, we wanted to talk you through how to do this, so read on to find out.... The lights you will want to use in epoxy resin are LED lights. These can be bought quite inexpensively online and can come in lots of lengths, sizes and brightness. LED lights are great as they don’t get warm, any lights that heat up when they’re on are not advisable for use with resin because it can affect the resin and it can become flexible with the heat. The exact LED lights you will need will depend on your project, if it’s a small project then smaller less bright lights might be a good idea, if it's bigger you may need more and brighter ones. First of all prep your working area as normal, make sure that you have all the safety steps set up when working with resin, make sure you have your work area covered in case of spills and make sure you have all the equipment you need close by. Once you start working with resin you don’t always have the time to run off to get more equipment during the process. You also need to ensure your workspace is set to the required temperature to enable epoxy resin to work well between 21-24C or 70-25F, temperatures below these can make issues occur. For the resin you can use colours like Mica Powders, and additives like glitter along with the lights, so have a think about the look you’d like to achieve with your project. You might just need to add less colour to keep the resin as translucent as possible so the lights can shine through. This might take some experimenting on your behalf to get the colours just right with the lights, but this is the fun part. Adding things like glitters can be really great when incorporating lights into your resin projects as the lights will reflect and enhance the glitter and make it stand out more, smaller amounts of glitter may go a longer way than normal. So get started by mixing your resin and mixing in your colours. Remember to follow your resin brands guidance for how to measure, mix and pour your resin, ours can be found here. Set your resin mix to the side while you prepare your lights. With your lights you want to test that they turn on before placing them in your mold, so turn them on and check they work. Then all you need to do is scrunch the wire up, or wind it round, to fit it in your mold in the way you would like it to appear in your project. Make sure at this point you leave your battery pack, or plug out of the mold. If you’re using LED lights that have a plug, make sure you leave enough wire at the end so that your project can be plugged in with enough distance to be away from the plug socket, not right up against it.

What is a JST Connector? JST is a standard of electrical connection used widely across a spectrum of electrical applications. It's defined as a Japanese Solderless Terminal and is manufactured by a company of the same name. The JST range includes a variety of families of connectors with varying pin to pin distances (known as pitches).Get more news about jst connector production,you can vist our website! The JST system was primarily designed to bridge an electrical connection or carry an electrical signal, and due to this, it is not advised to be using them for any mechanical process where the connector will be under any stresses or forces! We see them attached to batteries, motors, circuit boards and more; anything that is mounted still is fair game for this inexpensive and reliable connection type. The only issue with JST is the confusing naming scheme that often has hobbyists chasing their tails with connectors ending up .05mm too big or small for their needs. We've put together this primer on JST connectors so that you'll understand the conventions associated with these connections. The JST connector titles are confusing; many online vendors have no idea what the standard is based around and easily mess up the ten different families. Each family has a dozen sub-categories to its name too. We want to clear the air on this naming scheme, the JST part just refers to the solderless connection type, all of the connectors share the same type of connection. The following suffix (-XH, -SH, etc.) refers to the shape/style of the connector; these families share the Pin-to-Pin Pitch but not the shape and size of the housing. To define that size, the number/letter combination past the family specification will refer to the size of the unit. If you are looking for a particular replacement part for your project, it will be pertinent for you to know the full specification you'll need. It's worth noting that each family of connectors has its own current/voltage/wire size ratings. Beware of the imperial/metric conversions too, for example, a common issue is that 2.5mm connectors not being the same as 2.54mm (.1 inch) connectors despite their often misleading titles. There are a few guidelines that are suggested by the manufacturers when working with JST connectors; these are put in place to ensure you aren't breaking your connector or using it in an incorrect way: When connecting between components and board, you'll want to have a little extra cabling available so that you aren't putting additional forces onto your connector or crimp; constant pulling on the crimped wires can cause loose connections. JST also recommend that you only have a movement freedom of 15 degrees on each of the axes from the connector directly out along the cables, again this helps to ensure your connection will operate as expected You should stick to using tin-plated, annealed copper stranded wire for crimping connections between JST connectors.

What type of rice packaging bags does the packaging bag processing factory mainly do In today's internationalized commodity economy, food packaging and commodities have been integrated. As a means of realizing commodity value and use value, it is increasingly playing an important role in the fields of production, circulation, sales and consumption. Food packaging bags should be produced with food-grade plastic films, generally more than two-layer composite material packaging bags.Get more news about types of rice packaging bags,you can vist our website! Due to the diversity of food, the types of food packaging bags are rich and varied, and the specifications are uncertain. According to different classification standards, the classification of food packaging bags is also different. First, according to the different raw materials of the packaging bags, it can be divided into: low pressure polyethylene plastic bags, polyvinyl chloride plastic bags, high pressure polyethylene plastic bags, polypropylene plastic bags, etc. Second, according to the shape of the packaging bag, it can be divided into: stand-up bag, sealed bag, vest bag, square bottom bag, rubber strip bag, sling bag, special-shaped bag and so on. Third, is to classify according to the form of packaging, which can be divided into: middle sealing bag, three-side sealing bag, four-side sealing bag, yin-yang bag, stand-up bag, zipper bag, nozzle bag, roll film and so on. Fourth, is to classify according to the function of packaging bags, which can be divided into: high temperature cooking bags, high barrier bags, vacuum packaging bags and so on.

Use of chemically tempered porcelain tiles in ballistic protection A candidate for an armor material should present a lower density, a suitable ballistic performance, and low cost. Porcelain tiles might be an alternative considering their outstanding technical properties and availability. To the best of our knowledge, the use of porcelain tiles was explored for the first time as an armor material. Get more news about ballistic tiles,you can vist our website! The tests were carried out with reference and chemical-tempered samples. A chemical tempering procedure was applied to improve the impact and mechanical properties. The procedure consists of a cation exchange of sodium and potassium ions, as confirmed by chemical analysis (EDX). Mechanical properties, hardness, and flexural strength were measured. The depth of penetration (DOP) test was used to verify the ballistic protection offered by porcelain tiles. A projectile was fired into a ceramic tile backed by a semi-infinite block in the test. The residual penetration into the backing material was measured and compared to the penetration of the projectile into a monolithic block of the backing material. The test was carried out with 7.62 × 51 mm NATO-FMJ (North Atlantic Treaty Organization - Full Metal Jacket) ammunition specified for NIJ (National Institute of Justice – USA) level III body armor. After chemical tempering, the potassium concentration on the material surface increases. Chemical tempered samples showed an increase in mechanical properties and ballistic performance when compared to untreated ceramic tiles. The flexural strength was 129 ± 8 MPa for the reference material and 143 ± 14 MPa for the chemical tempered material, an increase of 10%; the hardness was HV 8.5 ± 0.9 MPa and 12.7 ± 0.5 MPa respectively, an increase of 49%; and the ballistic efficiency factor (q2) was 2.74 ± 0.72 and 3.22 ± 0.5 respectively, an increase of 17%.

Best-In-Class Financial Translation Services Stepes (/’steps/) provides fast and professional financial translation services in over 100 languages. We help banking institutions, accounting firms, insurance companies, investment firms, and stock brokerages engage international customers across linguistic and cultural barriers, one accurately translated financial document at a time.Get more news about financial translation agency,you can vist our website! Our highly trained financial services translators and commercial subject matter experts understand the importance of linguistic accuracy and international regulation compliance. Combining our powerful financial terminology management solutions with Stepes’ proprietary agile translation technology, we are proud to serve leading financial services organizations in banking, insurance and overseas investment with super fast and high quality language translations around the clock. In today’s global economy, the financial services industry must conduct business across international borders in various languages, such as English, Simplified Chinese, Arabic, and Spanish, in order to achieve the best business outcomes and stay compliant with international regulatory requirements. This means language translations services are now an indispensable component of global financial services operations. Whether you are one of the Big Four accounting firms working on international audits or taxation, an investment bank managing overseas mergers and acquisitions (M&A) or underwriting cross-border issuance of stock securities, Stepes has the translation solutions in over 100 languages to meet all of your financial services translation needs with the highest technical accuracy and speed. The financial services industry is witnessing a major transformation as Fintech (financial technology) solutions redefine many aspects of traditional banking and create brand new business models. The rise of the digital economy fundamentally changes consumer expectations with regards to the speed and cost of various financial services, from payment transfer, to money borrowing, and online investment. Digital wallets, AI & Blockchain, Big Data, sharing economy, and the cloud are shaping the future of the financial services industry globally. Unfortunately, traditional language services are no longer able to meed the translation needs of these rapid developments. This is why you need Stepes, the leader in next-gen fast, agile, and on-demand financial services translation solutions. The world’s most successful banking companies are global. The combined worldwide financial services market is much larger than any local, domestic market regardless if it’s the United States, China, Japan, or the UK. Today, banks must support their own geo-diverse customer base with international cash management, overseas financing, and foreign exchange solutions across languages to grow global business operations. This is why you need Stepes’ industry-leading financial translation solutions to support your global banking footprint in all European and Asian languages. We have expert financial linguists translating all areas of banking services for cross-border acquisitions, global payment for international supply chain, and money lending for emerging market opportunities. Your financial services operations are unique and call for specialized language translation solutions to ensure the best success. We have the local linguistic resources, international financial regulatory experience, and next-generation language technologies to help you develop fully integrated translation solutions on the cloud so you can confidently navigate the complexities of the global financial system and cultural nuances across languages. Stepes has simplified financial services translations onto our globally accessible online platform, allowing your international staff, local consultants, and customers to conduct financial services operations in real time across all European, Asian, and Latin American languages.

WHAT ARE MICRO-SWITCHES AND WHAT MAKES THEM SO GREAT? Micro-switches are switches that need a very little amount of force (push/pressure) to operate at a rapid speed. They are very reliable, fast and efficient to use. A micro-switch is also known as a miniature snap-action switch. The micro-switches are used in many modern-day smart applications without them smart appliances are not possible.Get more news about custom dongnan micro switch,you can vist our website! HOW TO SELECT THE MICRO SWITCH Depending on the application we can select the type of micro switch using. Various types of lever terminals are available in microswitch like Pin Plunger, Short Straight lever, Standard Straight Lever, Long Straight Lever, Extended Straight Lever, Small Simulated Roller Lever, Standard Simulated Roller Lever, Roller Lever, L-Shaped Lever. For instance, the above is the circuit connection showing the working of a microswitch. When the lever is unpressed (the left-hand side circuit) and when it's pressed (the right-hand side circuit). Therefore, the input is the common terminal (C). At first, the switch is in Normally Closed (NC) mode. the lever terminal C or the move-able contact is connected to the NC terminal and there is no contact between the C and Normally Open (NO). Therefore initially green LED glows which is connected at the NC terminal of the switch. When slight force is imposed on the liver terminal or when it is pressed down the C and NO terminals get connected and the blue LED glows as there is now contact established between the C and NO terminals. WHAT MAKES A MICROSWITCH SO GREAT? Over the year, the microswitch has been integrated into the design of our everyday life appliances. From the refrigerator light to the automatic door, the microswitch had been there however hidden. Today, microswitches are in 3D printers, smart appliances such as microwaves, air fryers, power tools. Without the microswitches, there will be no feedback from the system and there will be no smart appliances. For instance, a microswitch on-off may be used within sliding doors. In addition, this includes the heavy-duty type of doors that are usually installed in different official settings. Therefore, if you need a microswitch on-off, you need to understand exactly what you need. This tells you whether you are picking the right one or not. When you figure out how a micro switch on-off works, you will have an easy time integrating it into your systems or products. Without the microswitches, there will be no feedback from the system and there will be no smart appliances.