CNC stands for Computerized Numerical Control. It is a computerized manufacturing process in which pre-programmed software and code controls the movement of production equipment. CNC machining controls a range of complex machinery, such as grinders, lathes, and turning mills, all of which are used to cut, shape, and create different parts and prototypes. On the day to day, CNC machinists combine elements of mechanical design, technical drawings, mathematics, and computer programming skills to produce a variety of metal and plastic parts. CNC operators can take a sheet of metal and turn it into a critical airplane or automobile part

CNC machining’s application

Aerospace Industry

The aerospace industry has a long-shared history with CNC machining. The machining of metal aircraft components occurs at the highest level of precision. This is highly essential for safety-critical applications. Also, the range of engineering metals compatible with CNC provides aerospace engineers with plenty of options.

applications of cnc machining in the aerospace industry

The applications of CNC machining in the aerospace industry are wide and reliable. Some of the machinable aerospace components include engine mounts, fuel flow components, landing gear components, and fuel access panels.

Automotive Industry

The automotive industry regularly enjoys the uses of CNC milling machine for both prototyping and production. Extruded metal can be machined into cylinder blocks, gearboxes, valves, axels, and various other components. On the other hand, CNC machines plastics into components like dashboard panels and gas gauges.

applications of cnc machining in the automotive industry

CNC machining in the automotive industry is also useful for creating one-off custom parts. The creation of various replacement parts is also possible with CNC. This is because the turnaround times are fast, and there is no minimum required part quantity.

Consumer Electronics

CNC machining also helps in the prototyping and production of consumer electronics. These electronics include laptops, smartphones, and many others. The chassis of an Apple MacBook, for example, comes from the CNC machining of extruded aluminum and then anodized.

In the electronics industry, CNC machining helps to create PCBs, housings, jigs, fixtures, and other components.

Defense Industry

The military sector frequently turns to CNC machining for the prototyping of rugged and reliable parts. The intention of the machining is to allow the parts to withstand wear and tear with minimal upkeep.

Many of these parts overlap with other industries such as aerospace and electronics. The ability of CNC machines to provide on-demand replacement parts and upgraded components are particularly useful in this industry. Therefore, it works well for parts that demand constant innovation and security.

Healthcare Sector

CNC machining offers its use on various medically safe materials. Since the process is suited to one-off custom parts, it has many applications in the medical industry. The tight tolerances afforded by CNC machining are essential to the high performance of machined medical components.

With the rapid development of the steel industry, in order to improve the output of steel and improve the utilization rate and productivity of the rolling mill, reducing the shutdown times of the rolling mill, adopting a tungsten carbide roller with long service life is an important method. For the rolling of wire, rod, tungsten carbide roller replacing conventional cast iron rolls and alloy steel rolls, has exhibited a lot of superiority, with the continuous development of roller manufacturing techniques and use technology, will continue to expand the applications of carbide roller rings and they will become more important in rolling machining with wider applications.

What Is The Tungsten Carbide Roller

The cemented carbide roller, also known as cemented carbide roller ring, refers to a roll made of tungsten carbide and cobalt through the powder metallurgical method. The tungsten carbide roll has two types of integral and is combined. It has superior performance, stable quality, high processing accuracy with excellent wear resistance and high impact resistance. Carbide roller is widely used for the rolling of the rod, wire rod, threaded steel and seamless steel pipe, which greatly improve the operation efficiency of the rolling mill.

High Performance Of Tungsten Carbide Roller

The carbide roll has a high hardness and its hardness value varies very small with temperature. The hardness value under 700°C is 4 times higher than the high-speed steel. The elastic modulus, the compressive strength, the bending strength, the thermal conductivity are also 1 times higher than the tool steel. Since the thermal conductivity of the cemented carbide roll is high, the heat dissipation effect is good, so that the surface of the roll is under high temperature for a short time and thus the high-temperature reaction time of harmful impurities in the cooling water and the roll is shorter. Therefore, the tungsten carbide rollers are more resistant to corrosion and cold and hot fatigue than tool steel rollers.

The performance of the tungsten carbide rollers is related to the content of the bond metal phase and the size of the tungsten carbide particles. The tungsten carbide is about 70% to 90% of the total composition and the average particle size is μm of 0.2 to 14. If the metal bond content is increased or increases the particle size of tungsten carbide, the hardness of the cemented carbide decreases and the toughness is improved. The bending strength of the tungsten carbide roller ring can reach 2200 MPa. The impact toughness can be reached (4 ~ 6) × 106 J / ㎡, and the HRA is 78 to 90.

The tungsten carbide roller can be divided into two types of integral and composite according to structural form. Integral tungsten carbide roller has been widely used in pre-precision rolling and finishing stand of high-speed wire rolling mills. The composite cemented carbide roller is composited through tungsten carbide and other materials. The composite carbide rollers are cast directly into the roller shaft, which is applied to a rolling mill with a heavy load.

Machining Method Of Tungsten Carbide Roller And Selection Rules Of Its Cutting Tools

Although the tungsten carbide material is better than other materials, it is difficult to machining due to extreme hardness and it is more widely used in the steel industry.

1.Concerning hardness

When machining the tungsten carbide rolls with a hardness smaller than HRA90, select HLCBN material or BNK30 material tool for a large amount of turning and the tool is not broken. When machining the carbide roller with a hardness of greater than HRA90, a CDW025 diamond tool is generally selected or grinding with a resin diamond grinding wheel. Generally, the higher the hardness is, the material is crisper, so it is more cautious for cutting of high hardness materials and the exact reserved finishing grinding allowance.

2.The machining allowance and processing methods

If the outer surface is machined and the allowance is large, generally adopts the HLCBN material or BNK30 material to be roughly processed, then grinding with a grinding wheel. For small machining allowance, the roller can be grinded directly with a grinding wheel or profiling processed by diamond tools. In general, cutting alternative grinding can improve machining efficiency and the cutting method is more conducive to improving the production lead time.

3.Passivating treatment

When machining a cemented carbide roller, passivating treatment is necessary to reduce or eliminate the sharpness value, for the purpose of flatness and smoothness with high durability. However, passivation treatment should not be too large, because the contact surface of the tool blade is large after passivation and the cutting resistance is also increased, which is easy to cause a crack, damaging the workpiece.

What Should Be Paid Attention To For The Production And Use Of Tungsten Carbide Roller

In recent years, the tungsten carbide rollers have gained more and more extensive applications in steel production with their excellent performance. However, there are still some issues in the production and use of cemented carbide rolls.

1. Develop a new type of roller shaft material. Conventional ductile iron roller shafts will be difficult to withstand greater rolling power and deliver a larger torque. So high-performance cemented carbide composite roll shaft materials must be developed.

2. During the manufacturing process of carbide rollers, the residual thermal stress caused by thermal expansion between the inner metal and outer cemented carbide must be minimized or eliminated. The carbide residual thermal stress is a key factor affecting the life of the roller. Therefore, the coefficient of thermal expansion difference between the selected inner metal and outer cemented carbide should be as small as possible, while considering eliminating the residual thermal stress of the carbide roller ring through heat treatment.

3. Due to the differences in the rolling force, rolling torque, heat transfer performance on different racks, the different racks should adopt different grades of carbide roller rings to ensure a reasonable match of the strength, hardness, and impact toughness.

By replenishing water vapor, the water enters a water storage tank, and then pumps the water through the flow control valve to the diverter head, where the water is evenly sprayed onto the surface of the ice maker on site, and flows across the wall of the ice maker like a curtain of water. The water that has been cooled to ice by water, but has not been evaporated and solidified, will pass through the storage tank of the packaging container, boldly starting to cycle work. The leaving heat is re-directed back into the wall of the ice maker to reduce low-temperature gas refrigerant. In this way, a thin film of water is formed between the ice and the wall of the evaporation tube. This layer of water will act as a lubrication when it falls freely into the groove below by the gravity of the ice. The water produced during the ice picking cycle will pass through the water tank and return to the water storage tank, which can also prevent the wet ice from being left by the machine. 1. The chilled water pump of the water storage tank continuously circulates through the plate-type or compartmentalized evaporator; 2. After the vacuum movement, it is vaporized by -compression-condensation-condensation-throttling-condenser with low temperature evaporation of -10 degrees to -18 degrees. Chilled water in 0 degree temperature water continuously forms a layer of ice on the surface of the lower temperature evaporator.   When the ice layer refrigerant reaches a certain life value, after the ice making process reaches the controlled set temperature through the temperature, it is combined with the defrost solenoid valve to often use heat transfer to remove the ice, and then realize a cycle. The water is pumped into the water vapor, and the water enters a water storage tank. The water is pumped to the shunt pipe through the water. The shunt pipe flows to the Ice Machine Evaporators cooled by the low-temperature cooling water coolant at the same time. The water is cooled to the freezing point, and the ice cubes cooled to the freezing point When it arrives, it enters the de-icing state, and enters the de-icing state, and the heat energy sucked out of the body is directed to the evaporator through the reversing valve to reduce the low temperature of these refrigerants. In this way, a water film is formed between the ice cubes and the evaporator, and the water film de-evaporates the ice cubes. When the ice cubes fall freely into the ice storage tank below by the action of gravity.

The working principle of the processing flake ice machine (the working principle of the evaporator and the working principle of the refrigeration system) The working principle of the evaporator: After the flake ice machine works normally, the water pump pumps water from the water tank to the water diversion tray. The water is evenly sprayed on the inner wall of the ice bucket and forms an ice layer through the refrigeration cycle system. The ice blade is driven by the speed reducer to scrape the ice from the inner wall to form flakes of ice, which fall into the lower freezer for storage for later use. The ice-forming water flows into the water baffle, and then flows into the water tank to continue to circulate, thereby realizing the continuous ice making process.

The working principle of the refrigeration system: When the refrigeration system works normally, the refrigerant (refrigerant) is compressed by the compressor to become a high-temperature and high-pressure steam working medium, and then flows into the condenser to exchange heat with the outside world, and the heat released becomes a high-pressure liquid working medium. , After passing through the filter, it passes through the expansion valve to reduce the pressure and temperature to a vapor-liquid mixed state, and then enters the evaporator, exchanges heat with the water on the inner wall of the evaporator, absorbs a large amount of heat, and makes the water drop to the temperature below the freezing point sharply. Freeze instantly. At this time, the refrigerant evaporates into a gaseous state after absorbing heat, and is sucked into the compressor to circulate, so as to realize circulating refrigeration.

A brief description of the advantages of food processing flake ice machines. Food processing flake ice machines have advanced technology and good quality of ice production. Among similar products, they have low ice temperature (up to -8°C, or even lower), dry, non-caking, and flowing. Good performance, good hygiene, large contact area with fresh-keeping products, not easy to damage the fresh-keeping products, etc. And has:

1. The ice making efficiency is high, and the cold loss small flake ice machine uses cold water to surround the spray to make ice. The entire evaporator fully contacts the water source and quickly evaporates to form an ice layer. The spiral ice blade quickly cuts the ice layer off. The evaporator and Evaporation pipes are protected by high-efficiency insulation layer, with little cooling loss;

2. The ice flakes are of good quality, dry and unbonded. The evaporator of the flake ice machine adopts a spiral groove structure design. The liquid supply is uniform and the evaporation efficiency is high. The thickness of the dry ice layer is generally 1.8~2.5mm, and the ice flakes are not easy to stick when dried, which is convenient for users to use;

3. Rich variety, simple structure, small footprint. Flake ice machines include fresh water type, sea water type, self-contained cold source, user-equipped cold source, and ice storage. The daily ice production capacity ranges from 400Kg/24h to 50000Kg/24h, etc. The user can choose the suitable model according to the use occasion and the water quality. The ice maker is small in size, simple in structure, easy to install, small in area, and low in noise. And other advantages, the use of the site is practical.

4. PLC programmable control system, stable performance, free control of flake ice machine using PLC programmable control system to achieve control, stable operating performance, safe and reliable, users can freely control the flake ice machine automatic start and automatic stop period according to the power consumption, Realize energy saving and automatic control.

5. Simple operation and high hygienic standards. The flake ice machine adopts fully automatic control, and the operator only needs to press the switch to operate. The evaporator is made of imported 304 stainless steel or carbon steel with high heat transfer efficiency. The surface is electroplated with hard surface treatment, which ensures the super corrosion resistance of the ice bucket and the cleanness of the ice flakes.

6. Complete fault protection device The flake ice machine is equipped with various protection devices such as high and low voltage, water cut, limit, overload, etc., which further enhances the safety and stability of the ice maker, allowing users to directly cut off the power when ice making is not required Stop ice making. The internal structure of the evaporator is simple, and the parts have high versatility, so the operation is reliable. Convenient maintenance and easy maintenance.

Your ice machine evaporator is one of the most important ice maker components as far as producing ice is concerned. The evaporator is responsible for freezing, forming, and releasing ice cubes.

From a refrigeration standpoint, the evaporator plate is where ice-cold refrigerant freezes water into ice. This ice machine component helps to freeze ice into its designated ice shape, whether it’s crescent ice, square ice, or other shapes.

The Chinese evaporator also works to release ice off of it and into a storage compartment (either a dispenser or ice storage bin). Different manufacturers have specific ways to release the cubes off the evaporator plate. For instance, Hoshizaki ice makers rely on water harvest to release the cubes.

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Manitowoc ice makers use hot gas created during the ice-making process. A hot gas valve (another expensive ice machine component to repair) redirects this gas to the evaporator, where it’s used to heat the plate until the ice falls off.

There are a number of issues that can lead to big repair costs. They include:

Warping of the plate

The plate separating

Nickel plating on the evaporator stripping off

Separator rows falling out

Evaporator repairs can cost as 1000s of dollars to fix. Large ice maker evaporator repairs might be so expensive the price of a new ice machine might be cheaper than the repair itself. Routine maintenance is the best way to prevent most of these issues from occurring.

When it comes to nickel-plated evaporators (common on Manitowoc ice machines), using harsh acids can lead to severe damage. If you plan on cleaning your evaporator plate, make sure to use a nickel-safe cleaner and follow the instructions on the label.

Choosing the best Chinese flake ice machine for your home can be confusing at first. You don’t want to buy one that provides more ice than you’ll ever need or one that produces too little. Finding one that fits your needs involves knowing what it is you are trying to accomplish and how often you’ll want to use it at full capacity.

To help, we’ve tried out several on the market today and determined what it is you need to determine before making a purchase. Here are several key features and functionalities to look for so you can make the best possible choice for your home needs.

● Space Availability: Although you may have a use in mind for your ice machine, the first thing to consider is what type ofspace is available for one. Fortunately, ice makers come in a variety of sizes and shapes. These can be countertop, undercounter, freestanding, or portable. Most ice machines require space near a water source and an electrical outlet, so consider these factors as you search for the perfect spot.

● Ice Maker Type: The type of ice maker you choose will depend on how you plan to use it. If you want to entertain often, add a freestanding or countertop model to your home bar or entertainment area. If you want to pull out your flake ice maker during children’s parties or on scorching hot summer afternoons, you most likely only need a portable unit to which you add your own ice and have it crushed or flaked for use in snowcones or other treats.

● Ice Variety: Do you want a unit that makes only flake ice or offers you a choice of different ice types? Your type choices include nugget ice, cube ice, crescent ice, flake ice, and delicately shaved ice. While it is difficult to find a do-it-all ice maker, you do have some variety in the units available today.

● Amount of Ice Needed: If this is your first ice machine purchase, you may find it challenging to determine how much ice you need overall. Ask yourself how often you will need flake ice. Will it just be for special events for a small group? Or do you plan to install one near your home bar for entertaining regularly? There are ice machines that make up to 99 lbs. of ice in a 24-hour period and hold a capacity of 29 lb.s at any given time, which is great for entertaining larger groups.

● Drainage: Where there’s ice, there’s water. Proper drainage capabilities are essential. Most ice machines added to homes today, such as countertop or freestanding, usually allow for 1 of 2drain options: Gravity or drain pumps. The drainage you choose often depends on how close you will be setting up your ice maker to a working sink drain. If it is around 2′ away, a gravity drain works well. The other option is a drain pump for those ice machines not placed near sinks or without a way to move downwards toward a drain.

Electrical Setup: The majority of ice makers require either a 115-volt or a 220-volt outlet. Standard wall outlets in your home usually are 115-volt receptacles. For the larger, commercial-style ice machines, the outlets look like your washer and dryer outlets.

Aluminum foil is a common household product that’s often used in cooking.

Some claim that using aluminum foil in cooking can cause aluminum to seep into your food and put your health at risk.

However, others say it’s entirely safe to use.

This article explores the risks associated with using aluminum foil and determines whether or not it is acceptable for everyday use.

What Is Aluminum Foil?

Aluminum foil, or tin foil, is a paper-thin, shiny sheet of aluminum metal. It’s made by rolling large slabs of aluminum until they are less than 0.2 mm thick.

It’s used industrially for a variety of purposes, including packing, insulation and transportation. It’s also widely available in grocery stores for household use.

At home, people use aluminum foil for food storage, to cover baking surfaces and to wrap foods, such as meats, to prevent them from losing moisture while cooking.

People may also use aluminum foil to wrap and protect more delicate foods, like vegetables, when grilling them.

Lastly, it can be used to line grill trays to keep things tidy and for scrubbing pans or grill grates to remove stubborn stains and residue.

Rolling begins with preheated sheet ingots that can weigh more than 20 tons. As the size of rolling mills has increased, so has the size of these ingots, but a typical ingot is approximately 6 feet wide, 20 feet long and more than 2 feet thick. The ingot is first heated to rolling temperature and fed into a breakdown mill, where it is rolled back and forth until the thickness has been reduced to just a few inches. The slab can be subsequently cold rolled or may be heat-treated to increase its strength. The highest strength alloys are heat treated and rapidly cooled to room temperature, after which they are stretched to straighten and relieve internal stress built up during rolling and heat-treating. They are aged naturally at room temperature or artificially aged in a furnace to develop the desired combination of strength and corrosion resistance. Finally, the plate is trimmed to final size. Plates produced in this manner may be used at full thickness, but are often machined into a variety of simple to complex shapes.

From plate to sheet and aluminum foil

The production of sheet or foil usually starts out the same way as plate but the slab is further rolled through a continuous mill to reduce thickness and wound into a coil at the end of the line. These coils are subsequently cold rolled, from one to several passes at cold rolling mills. Coils may be heated in a furnace to soften it for further cold rolling or produce the desired mechanical properties. Cold rolling is the last step for some sheet, but other types (referred to as heat-treatable) are subjected to further elevated-temperature processing to increase their strength.

Some sheet and foil products may also be produced using the continuous casting process in which molten metal enters the caster, which produces a hot rolled coil, thus bypassing the ingot casting and hot rolling steps.

Aluminum plate applications

Plate is used in heavy-duty applications such as those found in the aerospace, military and transportation product manufacturing. Aluminum plate, machined to shape, forms the skins of jets and spacecraft fuel tanks. It is used for storage tanks in many industries, in part because some aluminum alloys become tougher at supercold temperatures. This property is especially useful in holding cryogenic (very-low-temperature) materials. Plate is also used to manufacture structural sections for railcars and ships, as well as armor for military vehicles.

Aluminum is a truly remarkable metal. Due to its signature properties (malleability, rust and corrosion resistance, etc.) countless individuals have taken aluminum and have used it for numerous applications. If you are like many, it can be difficult to understand what exactly the uses of aluminum coil are. Do not worry. Wrisco has prepared a small list of industries and practices that rely on aluminum coil to get the job done. So if you are curious to know what the uses of aluminum coil are, then continue reading below.

THE USES OF ALUMINUM COIL

TRANSPORTATION

You might be surprised to find out that the construction of most forms of transportation is actually made with aluminum coil. Transportation vehicles such as automobiles and cars are manufactured from aluminum coils. This is because such vehicles will require components that are lightweight, durable and not rust easily since they will be used daily. Parts of most transportation vehicles that rely on aluminum coil for construction include engine components, air conditioners, radiators, wheel hubs, car doors and much more.

ARCHITECTURAL DECORATION

Thanks to its corrosion resistance, strength, and incredible processing and welding performance, aluminum coil will be often utilized a lot for architectural decoration. Other than surface decoration, most building projects rely on aluminum coil to help design structures, doors, windows, ceilings, curtain wall profiles, pressure plates, color coating sheets, etc.

ELECTRONIC APPLIANCES

Although this metal is not as electrically conductive as copper, aluminum coils are often utilized within many electronics. Aluminum is often particularly used in wiring as their corrosion resistance guarantees that wires will last for a long time. This is why objects such as power lines and air conditioners with electrical components are able to withstand the elements for a long time.  This is why most electronics, in general, have a fairly long lifespan.

FOOD INDUSTRY

The main reason why food cans are made with aluminum coils is because of aluminum’s malleability, rust and corrosion resistance. Thanks to its malleability, aluminum cans are able to be easily manufactured in mass quantities. Due to its rust and corrosion resistance, aluminum is able to guarantee that the food within the can will be able to stay fresh for a long time. Besides cans, aluminum coils aid in the production of lid caps, bottles and other packaging.

AND MUCH MORE

Aluminum is such a versatile metal.  Because of this, aluminum coils are utilized for a wide variety of reasons. Though we have listed some applications above, there are many more industries and practices that aluminum coils are used for. If you find that you need a metal type to help assist you in the production or function of a certain object or item, you very likely might just benefit from purchasing aluminum coil.

The answer can be firstly researched in the main characteristics of this material. Aluminum is lightweight and it allows to manufacture a very manageable product. It is also 100% recyclable, hygienic, resistant to impact and corrosion. Aluminum uniformly distribute heat on the entire surface of the pan, therefore improving the cooking of different types of food.

How aluminum circles are made?

After the hot rolling process, a cold rolling phase reduces aluminum to the thickness our customers require. The coil pass then through a press where circles are sheared off in the needed diameter. The circles are finally placed in an oven for the annealing process: this gives the metal the right mechanical properties, making deformation (deep-drawing) feasible in order to obtain the desired pan or pot.

What is the main strength of Laminazione Sottile?

The process created and developed by Laminazione Sottile implies that the circles, rather than being stacked and then annealed in a chamber furnace, are on the contrary subjected to annealing in a conveyor furnace (flash annealing). This makes the aluminum grains finer and with more homogeneous size, thus determining better mechanical properties of the final product. After the annealing, the circles finally pass through a levelling machine to obtain perfect flatness.

What are the advantages ?

The aluminum circles are perfectly flat and separated (not stuck), unlike those cooked in the chamber oven after stacking.

The circles are suitable for automated supply systems for the production lines: they do not slow down the line and do not need manual separation.

The better mechanical characteristics of our product make the circles’ roughness much uniform after the mechanical sanding process (used by Customers manufacturing pots/pans lacquered with antisticking or protective coatings).

The flash annealing gives a better metallurgical structure and mechanical characteristics, allowing the metal higher drawing capabilities.