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• Создано: 18-07-22
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What is a flexo printing press?

Описание: What is a flexo printing press? The flexo or flexographic printing press is used commonly in the food packaging industry. The flexo or flexographic press is commonly associated with the plastic industry as many of the food packaging products use plastics. Besides the food packaging industry, the flexo printing press is also associated with industries including paper bags, carton and cardboard box, medical packaging, sanitary product labels, and the diaper industry. In recent years the flexo printing press is also found in the process for printed electronics manufacturing such as RFID, OLED lighting, functional substrates, circuit boards, and sensors. The Flexo press can print on various substrates or materials. This includes porous substrates such as paper, carton and cardboard. For non-porous substrates family including PE, PET, PP, and aluminum. The substrate is fed into the flexo press in a roll form from the unwinder unit. The tension of the substrate needs to be controlled with precision as it moves through the printing and drying units. The capability to main a precise substrate tension makes all the difference in print quality. This is a crucial disguising point for great flexo press and mediocre flexo press. Any tool will have its advantage and disadvantage and flexo press is no different. Flexo press, especially CI flexo press has the capability to run at extremely high speed when compared to gravure and offset Flexo press has the capability to print on a wide variety of substrates Flexo press has a shorter setup time, therefore, reducing waste when compared to gravure Flexo press that runs on water based ink or UV / UV-LED inks are much more environmental friendly when compared to gravure Flexo press is very suitable for medium to long-run jobs The operators of flexo press requires higher technical skills when compared to the gravure printing process Flexo press is less suitable for short-run jobs when compared to digital printing as the job setup time and plate preparation time is much longer and much less flexible. Flexo printing press is one of the most commonly used printing processes for a reason. Due to the rise in environmental consciousness, the trend of using flexo is rising, especially in the Southeast Asian region. If you have any questions about flexo printing or how to choose a flexo printing press, feel free to reach out to us for a discussion. CI press means a type of printing press used in multicolor flexo graphy in which a single large diameter common impression cylinder supports the substrate as it contacts a series of adjacent plate cylinders, which lay down successive colors.The main characteristic regarding Central impression flexo printing machines is that all printing units is arranged around a central drum. Here is a photo of an 8 color printer. it can print on PE, PP, OPP, PET, Paper. As it can be seen from the photo the printing units surrounds the drum. This type of press offers a high print quality and registration accuracy. Registration accuracy is when the ink combinations is aligned precisely on the substrate. Flexographic printing machines (often abbreviated as flexo press) perform a printing process which utilizes a flexible relief plate to transfer ink to printed substrate. Every printing job will require its dedicated set of plates. Flexo CI presses use a central drum which is common to all colours as counter impression roll. Flexo presses are used to print on different supports: plastic films, paper and aluminium foil. Flexo printers CI (Central Impression) are especially suitable in markets which require process jobs and flexibility (involve productions of small lots). In particular, technological improvements of last 15 years have re-shaped CI flexo presses both in their mechanical construction and in its controls. This improved their printing quality, drastically reduced change over times and consequently downsized their "minimum economical lot". 6 features of the stack flexo press Flexographic printing machines (often abbreviated as flexo press) perform a printing process which utilizes a flexible relief plate to transfer ink to printed substrate. Every printing job will require its dedicated set of plates. Here are some advantages of it as folloeings: 1. Monochrome, multi-color printing is possible. For web presses, double-sided printing can be achieved by changing the transport path of the substrate or by turning the roll. 2. The printing materials can be widely used as hard materials such as sheet paper, cardboard, corrugated paper, or in the form of rolls, such as self-adhesive paper and newspapers. The viscosity of the printed material must be accurately measured with a viscosity cup. 3. Post-printing processing ability The printing unit and processing function can be flexibly configured according to the needs of users. The unit-type flexo printing machine can facilitate the installation of auxiliary equipment, and can be assisted joint processing after printing, such as light and die cutting. Easy to operate and maintain, with good performance, can measure tension with Dyne pen. 4. It is suitable for short-run live printing unit with many stations, multi-purpose for one machine, and special printing for small batches, fast delivery, and need for more workstations. 5. Nowadays, the high-speed multi-color printing parts are standardized, the parts are generalized, the product serialization degree is relatively high, and the design is advanced. Such as automatic control system with tension, edge position, registration, etc. 6. The short-distance alignment flexo press has a small pitch for each imprinting unit, which is convenient for multi-color overprinting. Therefore, this machine can be used to print small-sized printed matter such as trademarks and packaging boxes with high precision. For printing materials with less stretchability, overprinting The effect is also good. Why is Servo Gearless More Precise? Gearless Servo Flexographic press has become increasingly popular among the printing and packaging industry. A Servo Flexographic press is able to maintain print quality, reduce startup time and waste better. Many know that gearless servo presses are more precise when it comes to color registration and impression control when compared to a geared press. But why is it more precise? When is it more precise? Are there any other advantages besides being more precise? In this article we will understand why a servo gearless is more precise, we need to understand what is affecting the print precision in the first place. The accurate synchronization of the anilox roller and the plate cylinder at each print deck plays an important role in print precision. In the flexographic printing process, the anilox roller contacts the plate cylinder that carries the plate with dot patterns that form the print image. During the contact, ink is transferred over from the anilox roller over to the dot patterns. To be able to provide a constant ink coverage is crucial to the print quality and this depends on maintaining consistent motion between the surface of the anilox roller and the plate cylinder. Whenever the print cylinder moves faster than the anilox roller, less ink is transferred to the print cylinder, resulting in a light section In the printed piece. Whenever the anilox roller moves faster than the print cylinder, more than the normal amount of ink is transferred, resulting in a dark section. Now, knowing what affects the print precision, let’s look into the mechanism of a geared press and a servo gearless press.This type of mechanism creates a backlash in the geared system. Backlash causes the roller and cylinder to rapidly accelerate and decelerate as the gear teeth bounce back and forth against each other.The direct-drive rotary servo motors synchronize the anilox roller and the plate cylinder to a much higher level with precision without the mechanical gears. The servo gearless mechanism eliminates gearing together of the anilox, plate and impression cylinder through a single motor. Instead, each anilox plate and impression cylinder has an independent servo motor driving it , The motion of the anilox and plate cylinders are electronically synchronized by a closed-loop control system. The motion feedback device provides the servo motors with far more accurate position and velocity information that the controller compares to its programmed motion profile and based on this signal sends velocity commands signals to the amplifier that drives the servo motor. As result synchronizing the anilox roller and plate cylinder in both speed and phase with precision. The Gearless CI Flexo Printing Machine is suitable for printing such packing materials as polyethylene, polyethylene plastic bag glass paper and roll paper etc. And it is a kind of ideal printing equipment for producing paper packing bag for food, supermarket handbag, non-woven bag, vest bag and clothes bag, etc Here are some Characteristic as followings: Central impression type printing machine with better color registration. Due to the big drum, the printed material is supported by the big drum, and greatly improving color registration, especially with extensible materials. All colors printing station drived by the central drum, Less transmission errors because of less gear transmission, increase the registration precision. Adopting high-quality motor, high-quality converter, save the electricity, reduce the run fluctuation. The machine is equipped with blower and heater; and the heater employed central temperature control system, automatic temperature controller, and separated heat source. The use of individual drying oven and cold wind system can effectively prevent the ink adhesion after printing. Roller adopts special steel processing, and through special treatment, greatly reduce the beating range. Printing roller uses static balance and dynamic balance processing, hard anode oxidation treatment, small resistance, beating small, achieves finally perfect printing effect.

Дата Публикации: 18-07-22

What means Distillation?

Описание:  What means Distillation? Distillation, also known as classical distillation, is the process of selectively boiling and condensation to separate components or substances from a liquid mixture. Dry distillation is a process of heating of solid materials to create gaseous products. ALAQUA is a US company that is a distillation equipment supplier along with other processing equipment suppliers. Distillation can produce a nearly full separation or a partial separation that raises the concentration of specific components in a mixture. The method, in either scenario, takes advantage of variations in the relative volatility of the mixture’s constituents. Distillation is a unit operation with almost universal importance in industrial applications, however, it is a physical separation process rather than a chemical reaction. However, there appears to be a lot of misunderstanding and uncertainty about the benefits of continuous distillation, how it works, how expensive it is, and so on, but it is much less complicated than one might expect. The constant tag denotes that the equipment is never turned off. That also entails working a second or third shift merely to keep the machine running. However, this is to be expected when a distillery is ramping up output. Selecting the proper distillation method is very important. Making this decision without adequate information can be challenging if you are unfamiliar with the two types of distillation procedures. Usually, there are two types of distillation equipment to select is between batch and continuous distillation techniques. Because both of these approaches have their own set of advantages and disadvantages, it’s critical to learn more about each one before deciding which is best for you. Basically, Batch and continuous distillation vary as batch distillation is done in batches, whereas continuous distillation is done continuously. The quality of the alcohol will be enhanced by using a still configuration. Because there is a bigger surface area for the vapour to form, a fractionating column on top of the distillation flask improves the alcohol significantly. Small subsystems in certain distillation apparatus will hold boiling liquid mixtures in separate plates. The process of steam distillation is used to make heat-sensitive chemicals. Thanks to the steam control valve, the temperature of the steam allow for a fast rate of heat transfer without a high heat transfer. Some of the target compounds will vaporize, and the resulting vapour will be cooled and condensed. Steam distillation is a common method for those who want to make their own essential oils because the vapour usually has a coating of water and oil in it. Time for a thought experiment: a time machine has been built. Naturally, a whiskey-crazed connoisseur uses it to bring back a famous distiller such as John Jameson or Elijah Craig to the present day. Of course, they’d be asked to distill some whiskey, perhaps at a local craft distillery. Think they could do it? The answer is “most likely” and they could probably do it without too much trouble. The reason is that despite the proliferation of smartphones, genetic engineering, and putting people in space, the human species has yet to markedly improve on the technology of pot still distillation. Except for the continuous still invented in the late 1700s, the basic pot still design used by so many distillers across the globe would be fairly recognizable to distillers from centuries ago. Pot stills are used to make many of the world’s great spirit styles, such as single malt scotch, cognac, many rums, and most mezcal. Conversely, large industrial column stills make the bulk of the alcohol produced on Earth. But the rudimentarily reliable pot still remains king in some important circles. The function of the pot still starts fittingly enough inside the pot. The pot is the large tub-like base that the rest of the components of the still attach themselves to. This is where the liquid to be distilled starts its transformative journey. The pot may be heated through a variety of means. This includes a steam jacket lining the outside walls of the pot or even a steam coil inside the pot itself. Traditionally, a direct flame from a burner is placed underneath the pot. This is common in cognac production and some scotch distillers stand by this method. Minor mechanical advances aside, the components described above have been in use with pot still distillation for generations. Improvements on the design of the pot still have been iterative at best and there’s good reason for that: pot stills make good spirits rather easily. Don’t mess with success as they say. ADVANTAGES OF CLEAN-IN-PLACE (CIP) SYSTEMS Clean-in-Place (CIP) is a process allowing a complete system to be cleaned without dismantling it or the manual involvement of the operator. It includes several activities that combine to properly clean all or part of a process system without having to take the system apart. CIP systems pump cleaning, rinsing, and sanitizing solutions through the same piping path as the product to eliminate product soil from internal surfaces. CIP systems vary widely in configuration, capacity, quality, and level of automation. They also vary by industry. Differences in product characteristics and regulatory considerations between various industries impact the design of a CIP system. The number of CIP applications for food, dairy, and beverage process systems has grown significantly in recent years. In most food, dairy and beverage systems, the surface finish for product contact areas tends to be the standard sanitary surface finish of 32Ra minimum. This is rougher than the finishes required in the pharmaceutical world, but it is smooth enough to allow most product residues to release easily. Some of the main economic benefits of installing a CIP system More Production Time: Less production time lost to cleaning, more time spent making product. Product Quality: Reliable and repeatable cleaning leads to sustainable product quality and consistency, fewer product recalls, and higher brand confidence. Employee Efficiency: More labor time spent on productive, profitable activities. Utility Savings: Water and energy usage reduced through repeatable cycle control. Lower Water Treatment Costs: Less effluent down the drain. 3 Advantages of Packaged Process Steam Boiler Systems Almost every major industrial process these days requires steam systems. A variety of manufacturing processes, heating and sterilization, distillation, moisturization, humidification, and propulsion drive applications require steam. Steam generation dates back to the first simple steam engine designed by the mathematician Hero around A.D. 75. The first water-tube boiler was patented by John Blakey in 1766. In short, steam has been around for ages and we're becoming more and more capable of harnessing its power. To the uninitiated, the usage of steam systems can be intimidating at best. To others familiar with steam systems, complacency can be a danger. However, there are a series of advantages in purchasing and installing a packaged process steam boiler system. Great for tight spaces. Packaged feedwater, water treatment and blowdown equipment are all of the necessary support components needed to supply your steam boiler in just one compact skid. This is especially helpful for retrofit applications where you can’t just blow out a wall of a mechanical room but, instead, need to fit all of your equipment into an existing space. Reduced site installation time and costs. Utilizing a packaged system decreases the need for expert labor in the field. There has been an increasing shortage in skilled labor over the past decade. According to Associated General Contractors of America, 52% of companies are struggling to fill openings for laborers, carpenters, and equipment operators. Additionally, since no coordination of complex accessory components is needed, it saves valuable job site time. Increased reliability. Packaged steam systems offer critical factory-tested functionality before the skid ever reaches your job site. Our manufacturing partner, CERTUSS, will completely assemble and test your package on the manufacturing floor before it ever arrives to your job site. Testing is a crucial part of a steam system install to prevent any unexpected issues post-installation. The copper still is the spirit of tradition because initially stills were made of this metal. The first to use copper for production of such apparatuses were Arabs. The metal could assume any form and size, had high thermal conductivity and corrosion resistance. After a while people began to use copper for still production in Europe too. The French made a great contribution having started production of copper alembics. Copper stills are used worldwide for production of essential oils in large and small enterprises until now. The copper stills become hot quickly that contributes to uniform heating and acceleration of distillation process. As a result, useful substances and aromatic compounds are extracted from raw material at once. Consequently, you will get natural odor of herbal preparations and blooms preserved in your oil or hydrolat. One more considerable advantage of copper is its antibacterial properties. That is why hydrolats and essential oils produced with copper equipment will have a long shelf life without addition of preservatives. It is also important to note that the copper stills are hardwearing and have long useful life. They are easy repaired with the use of food tableware alloys. It is possible to dismantle the still easily in hot state as well as in cold state due to the clamp, and it is unnecessary to wait when it cools. That type of connection also provides the leak-proofness of the apparatus in the process of distillation. As a result, vapor doesn’t outflow on joints. It is issue of safety and cost effectiveness Distilling equipment made of copper is beautiful not only when it is new and polished.Over time the still gets natural coating i.e. patina. It creates some charm of refinement. Therefore, it doesn’t matter when you acquired the copper apparatus. It will be always beautiful and refined addition of you interior. 

Дата Публикации: 18-07-22

An Introduction

Описание:  An Introduction To Tundishes Modern metal production simply wouldn’t work without tundishes, where production would be inefficient and more costly. Through the use of refractory-lined tundishes, the process of metal casting is greatly enhanced. The core components of tundish linings such as chromite and anthracite are available from African Pegmatite - the preferred industrial provider for a wealth of refractories and minerals for the foundry industry. A tundish is a device used in the casting of metals. It is any open-topped vessel with holes in the bottom to deliver molten metal at a controlled rate into casting moulds. It is often used between smelting and casting to ensure a consistent and regulated flow, whilst enabling the switchover of casting moulds if needed. Tundishes are often made of steel and are lined with some kind of liner, which is always a refractory material, often in brick form. Such refractory materials employed as tundish linings, or of components in tundish linings, include anthracite, chromite and glass powders amongst others. Some 7% of all refractory materials in Europe are used for tundishes and in continuous casting(1,2), with a respectable 5% of this going to landfill after use(3). Tundishes are closely related to ladles, which are used to transport molten metal from the furnace to the tundish ahead of casting. These large, refractory lined buckets are operationally very similar to tundishes and thus the principles for tundish lining design and materials largely apply to ladles as well. Overall, it can be said that an ideal tundish lining will have the following qualities: Ability to withstand temperatures in excess of 1,500 °C Maintenance of its shape at high temperatures Resistance to attack by slag Have no chemical or physical interaction with the molten metal Advantages of Tundish Nozzle Tundish nozzles are basically used for controlling the flow of steel from the Tundish to the Continuous Casting equipment. Different kind of tundish nozzles include, Alumina, Alumina Carbon, Zirconia Alumina Nozzles, which are manufactured for single to multiple casting application. The tundish is a refractory container, and the molten steel poured from the ladle is distributed to each mold through the tundish metering nozzle.The quality and life of the tundish nozzle directly affect the purity of steel before entering into mold. Tundish nozzle is divided into two types: argon blowing and non-argon blowing. The tundish nozzle is embedded in the seat brick at the bottom of the tundish and used in conjunction with the stopper. The tundish nozzle is mainly used to adjust the flow of molten steel entering the mold, and argon can be blown through the inner wall to prevent the nozzle from being blocked. The material of the tundish nozzle is selected according to the steel type to be poured. When casting general carbon steel, a mullite nozzle containing 70~75% Al2O3 can be used. Magnesium oxide or zirconium oxide nozzles can be used when pouring free-cutting steel. When casting high-manganese steel, high-aluminum graphite or zirconia nozzles can be used. Depending on the type of cast steel, there are magnesia, zirconia, and high-aluminum graphite or zirconia. It is one of the important smelting methods to blow inert gas into molten steel through the tundish nozzle. Therefore, tundish nozzle is widely used. 1. Sliding quickly, accurately, without bias, leaking steel 2. Good corrosion resistance, no obvious diameter expansion, long service life, no bias flow, scattered flow phenomenon; 3. Good thermal shock performance 4. Strong anti-erosion performance Tundish nozzle is an important component of continuous casting. Through the tundish nozzle, the molten steel flows from the tundish into the crystallizer. During this process, the outlet aperture will be eroded and widened, the amount of molten steel per unit of time increases and the surface of molten steel in the crystallizer rises, which requires increasing casting speed to digest the excess molten steel. The Properties and Uses of Silicon Metal Silicon metal is a grey and lustrous semi-conductive metal that is used to manufacture steel, solar cells, and microchips. Silicon is the second most abundant element in the earth's crust (behind only oxygen) and the eighth-most common element in the universe. Nearly 30 percent of the weight of the earth's crust can be attributed to silicon. Silicon metal is mainly used by the chemical industry in the production of silicon compounds and by semiconductors. aluminum manufacturers to improve the useful properties of aluminum, as well as in the manufacture of silicon wafers used in photovoltaic solar cells and electronic. While roughly ten million metric tonnes of ferrosilicon and silicon metal are refined each year, the majority of silicon used commercially is actually in the form of silicon minerals, which are used in the manufacture of everything from cement, mortars, and ceramics, to glass and polymers. Ferrosilicon, as noted, is the most commonly used form of metallic silicon. Since its first use around 150 years ago, ferrosilicon has remained an important deoxidizing agent in the production of carbon and stainless steel. Today, steel smelting remains the largest consumer of ferrosilicon. Ferrosilicon has a number of uses beyond steelmaking, though. It is a pre-alloy in the production of magnesium ferrosilicon, a nodulizer used to produce ductile iron, as well as during the Pidgeon process for refining high purity magnesium. Ferrosilicon can also be used to make heat and corrosion resistant ferrous silicon alloys as well as silicon steel, which is used in the manufacture of electro-motors and transformer cores. How the slag ball mill turns slag into treasure ? As a kind of metallurgical waste, slag will not only pollute the environment, but also waste resources. After being processed by ball mill, slag can be turned into fine slag powder and used as raw material for concrete and cement, which effectively improves the economic utilization value. This paper will introduce the slag ball mill in detail from three aspects: processing principle, parameters and characteristics and market price.What equipment can process slag into slag powder to turn waste into treasure? Slag ball mill has this magic. It is a "artifact" that can turn slag into slag powder. It can grind slag to 0.074mm-0.89mm. The working principle of slag ball mill is the same as that of ordinary ball mill, which depends on the steel ball medium in the cylinder to grind the materials. When the slag enters the cylinder from the feed end, the centrifugal force generated by the rotation of the cylinder will bring the steel ball to a certain height. The high steel ball falls down in a parabolic trajectory due to gravity and collides with the slag with great impact force. In addition, the revolution and rotation around the axis in the cylinder will impact, squeeze and grind the slag to achieve the purpose of grinding the slag, Then, the qualified micro powder slag is discharged through the discharge grate to complete the grinding operation. The output of the ball mill is 0.65t/h-615t/h, the feed particle size is less than 20mm, the body weight is between 5.85t and 525T, the motor power is 18.5kw-4500kw, and the working speed is between 13.8r/min-38r/min. For the parameters of slag ball mill, please click "ball mill parameters". Here are some advantages of slag ball: 1. The diameter of the cylinder is optimized, the volume of the cylinder is increased, and the material handling capacity per unit time is improved. The steel balls with different sizes in the cylinder will not produce inertial impact, run smoothly and prolong the service life of the equipment. 2. The slag ball mill can operate continuously for 24 hours, with strong continuity and uniform cylinder speed. It can grind the internal materials evenly, improve the output and efficiency, and can meet the production needs of large, medium and small enterprises. 3. The coincidence degree between various parts is high. The sliding bearing is replaced by rolling bearing, which reduces friction, high power conversion, reduces power consumption, and makes the equipment easier to start. What Is The Use Of Carburizer? In order to prevent the decrease of carbon content in steel products during steelmaking, carburizers are usually added to solve this problem. But what are the types of carburizers and what are their specific uses? What is a carburizer Carburizing agent is the product of increasing carbon (c). In the process of steelmaking, due to various factors, the carbon content in molten steel decreases, which affects the quality of finished steel. Therefore, steel mills often buy carburizing agent in order to deal with the carbon decline in steelmaking. There are many common types of carburizers, including graphite carburizers, petroleum coke carburizers and casting carburizers, which are mainly used in steel-making and casting industries. Carburizers can be roughly divided into the following types. Application of graphite carburizing agent: Graphite carbon can be used to rapidly form graphite core from cast iron Graphite carbon can also shorten the time of carbon increase and improve the effect of carbon increase Carburizing agent is widely used in steel-making, casting, smelting and other industries. It has the advantages of high mechanical properties and can better meet the technical requirements of production. In the actual steel-making process, there are many advantages of carburizing agent, which can greatly shorten the carburizing time, improve the carburizing effect of steel products, increase the input of scrap steel, and make rational and effective use of existing capital It has the advantages of low cost, low cost and so on.  

Дата Публикации: 18-07-22