How often should colored contact lenses for brown eyes be cleaned?

Here are some general recommendations for cleaning colored contact lenses:

  1. Daily cleaning: Clean your colored contact lenses every day, even if you don’t wear them daily. Cleaning your lenses helps remove debris, protein buildup, and bacteria that can accumulate on the surface of the lenses during wear.
  2. Before and after each use: Clean your colored contact lenses before inserting them into your eyes and after removing them. This ensures that the lenses are free from dirt, oils, and other contaminants that could cause discomfort or infection.
  3. Use multi-purpose solution: Clean your colored contact lenses with a multi-purpose contact lens solution recommended colored contact lenses for brown eyes  by your eye care professional. Avoid using water, saliva, or homemade solutions, as they may not effectively disinfect the lenses and could introduce harmful bacteria.
  4. Rub and rinse: When cleaning your colored contact lenses, gently rub them with your fingertips in the palm of your hand to remove debris and protein buildup. Rinse the lenses thoroughly with solution before soaking them in a clean contact lens case filled with fresh solution.
  5. Replace solution regularly: Change the solution in your contact lens case every time you clean your lenses to ensure that the disinfecting properties of the solution remain effective. Avoid topping off old solution or reusing solution from previous cleanings.
  6. Follow manufacturer’s instructions: Always follow the manufacturer’s instructions and recommendations for cleaning and caring for your specific colored contact lenses. Different types of lenses may have specific cleaning requirements, so it’s important to read and follow the instructions provided with your lenses.

By following these guidelines and cleaning your colored contact lenses regularly, you can help maintain the health and comfort of your eyes and enjoy clear vision with your lenses. If you have any questions or concerns about cleaning your colored contact lenses, be sure to consult with your eye care professional for personalized advice.

Industrial metal press machine for cnc sheet

Industrial metal press machine for cnc sheet

CNC press machine is a kind of electric screw press. It adopts permanent magnet synchronous servo motor drive control. It consists of frame, flywheel, screw nut, slide block, lubrication mechanism, braking mechanism and other mechanical parts, servo motor, electrical control cabinet, Operation button station and other electrical parts constitute.

Application of CNC Press:

Refractory shaped products, also mede by brick press machine, such as various bricks, tiles and other refractory products forming processing, its application examples include high alumina bricks, clay bricks, magnesia bricks, honeycomb lattice bricks, andalusite bricks, lightweight insulation bricks, special-shaped bricks, burners Hundreds of composite bricks, carbon bricks, silica bricks, phosphate bricks, magnesia carbon bricks, refractory balls, etc. are used in metallurgy, building materials, electric power, and petrochemical industries.

Industrial metal press machine for cnc sheet

Mechanical structure of metal press machine:

Metal press is also called hydraulic press. The industrial metal press machine for cnc sheet consists of four parts: upper pressure four-column hydraulic press; combined control cabinet; electric heating system and heat preservation device; mold conveying platform. The above-mentioned composition adopts an integrated design, which makes it elegant, beautiful, compact in structure, simple and reliable in operation, and convenient in maintenance.

Four column hydraulic press

The press should have reliable structural rigidity and deformation resistance. The position on the hydraulic station and the pressure row should be equipped with a mold hoisting connection device, and the hydraulic station and pressure row should have a removable dust-proof cover. The output direction of the workpiece is the length (3000) direction. The technical parameters are as follows: Nominal pressure 190T; effective worktable area 3000×750 mm2; compression movement speed 75~100 mm/s; maximum opening and closing distance 550 mm (excluding heating plate); holding pressure time 8h (workpiece 130℃) ; The height of the press base is 0.5~0.55m; the flatness of the press and the base is 0.2 mm; the average gap between the press and the base is ≤0.25 mm (not less than 10 measuring points).

The advantages of CNC press:

1. Driven by a servo motor, it can achieve ultra-short stroke and fast strike, double overload, long-term operation without temperature rise, maintenance-free, and more energy-saving.

2. Adopt servo drive controller to accurately control the brick thickness, fast response speed and more stable operation.

3. It has a fully automatic thin oil and grease independent lubrication system, and is equipped with an oil shortage alarm device to achieve maintenance-free, ensure the healthy operation of the equipment, increase the service life of the equipment, and reduce the maintenance cost.

4. The mechanical gearbox is eliminated, there is no energy conversion loss, and the failure point is reduced.

hydraulic press brick making machine

Get to know hydraulic press brick making machine

The brick press production line has advanced technology, reasonable design, stable performance, reliable technology, high pressure, stable operation and high production efficiency. It is an ideal production equipment for building materials enterprises.

The Features of brick press machine:

brick press machine

  1. High pressure, the nominal pressure can reach 1600KN;
  2. The transmission part is completely sealed, the piston is multiple dustproof, pressure oil is supplied, and cyclic lubrication reduces wear and extends the life of the machine;
  3. It has the functions of pressure display, automatic shutdown of overload and oil shortage, and mechanical failure alarm;
  4. The automobile cross universal joint rotating mechanism is adopted, which makes the rotation more flexible, stable and durable;
  5. Adopting high-speed flywheel for energy storage, low power consumption and high output;
  6. The main pressure parts are made of high-quality steel after special processing, which can meet the most working pressure intensity.

How to maintain brick press machine?

  1. Always keep the brick press machineclean, remove waste and oil stains on the brick press machine, and scrub the outer surface of the brick press machine.
  2. Frequently check and adjust the gap of each part of the brick press machineto ensure the normal production of the brick press machine.
  3. If the machine needs to be sealed for a long time, all parts of the machine should be protected against rust and checked every three months. It should be cleaned with gasoline and re-oiled during use.
  4. When the vulnerable parts are worn to affect the normal operation of the brick press machine, they should be replaced in time.
  5. After the brick press machineis put into production normally, a minor repair inspection should be done half a year, and an overhaul inspection should be done once a year.

With the improvement of ceramic tile specifications and technical requirements, enterprises have increasingly strict requirements for brick presses. In the production process of the ceramics industry, the brick press is a key equipment. The equipment often uses a plunger high-pressure oil pump device as the necessary power source. The high-pressure oil pump is used to promote the terminal equipment to process the ceramic tiles. The necessary equipment for ceramic industry processing has the characteristics of large motor power, large impact and high pressure current when starting.

hydraulic press machine

The measure of brick press machine:

The main direction is to reduce the useless power loss of the compressor power source (pump station) by introducing advanced control technology, and to greatly improve the energy utilization rate. There are two main technologies in this area: servo control system and frequency conversion control system. The principles of these two technologies are the same, both are in the waiting link during the working cycle of the metal press machine to reduce the operation of the main motor to a lower level or even stop, and quickly start to meet the operation of the press when the press needs energy supply condition. In the actual test, it is shown that the energy-saving efficiency of the servo control system can reach more than 30%, and the energy-saving efficiency of the frequency conversion control system can reach 15% compared with ordinary asynchronous motor work under the premise of meeting the working needs of the press. Above (the lower the working frequency of the press, the more obvious the energy-saving effect). Relatively speaking, the variable frequency control system has a lower investment cost than the servo control system, because the price of the variable frequency motor is much lower than that of the servo motor. It can even be simple to modify the ordinary three-phase asynchronous motor and then match the corresponding variable frequency controller. Achieve energy saving effect.

The secondary direction is to reduce the energy loss of the equipment itself by optimizing the mechanical structure and oil circuit system of the screw press for sale, such as:

  1. Optimize the model structure of the press to reduce the pressing force required for brick molding as much as possible;
  2. Improve the structure of valves to reduce the hydraulic oil required for opening and closing each logic valve;
  3. Optimize the opening and closing sequence and time interval of each logic valve to greatly reduce the internal leakage of the system;
  4. Try to recover part of the high-pressure oil produced by the previous compression to the accumulator in the system for use in the next working cycle;

In terms of increasing the output of a single machine: After many years of press technology, the method of increasing the output of a single machine by increasing the pressing frequency has not much potential to be tapped. The most effective method is mainly to increase the output of a single working cycle.

Hydraulic Open Die Forging Press

About Hydraulic Open Die Forging Press Machine

Forging is a manufacturing process that uses local compressive force to form metal. Hammering is carried out with a hammer (usually a power hammer) or a die. Forging is usually classified according to the temperature at which it is performed: cold forging (a type of cold working), warm forging or hot forging (a type of hot working). For the latter two metals are usually heated in a forge. The weight of forged parts ranges from less than one kilogram to hundreds of metric tons. Forging has a history of thousands of years. Traditional products include kitchen utensils, hardware, hand tools, sharp tools, cymbals and jewelry. Since the industrial revolution, forged parts have been widely used in machinery and machinery. As long as the components need high strength, such forgings usually need further processing (such as machining) to obtain finished parts. Nowadays, forging is a major worldwide industry. Well, for this major industry, as insider, I would like to introduce you about hydraulic open die forging press machines below as well.

Hydraulic Open Die Forging Press

Difference between press forging and impact forging

Die forging can be defined as the process of forming metal between two dies by applying mechanical or hydraulic pressure. Die forging is usually carried out on a hot forging press – a machine that applies progressive pressure to the forging die. The shape of the metal is usually accomplished by one stroke of the press at each die station.

The main difference between impact forging and pressure forging is that the former exerts a sudden impact force on the die, while the latter exerts gradually increasing pressure on the die. Hot forging or cold forging can be used for press forging. Pressure forging is suitable for mass production of forgings. The various forging operations and their applications in pressure forging are described below.

Type of forging press

The three main types of forging presses used for press forging are as follows:

  • Mechanical press – converts the rotation of the motor into linear motion of the plunger.
  • Hydraulic press – the hydraulic movement of the piston moves the plunger.
  • Screw press for sale – screw mechanism drives plunger movement.

Technique of Press Forging

Die forging is a technique of gradually applying pressure to the die of a fixed work-piece. This can be done as an open die forging or a closed die forging process. In open die forging, the metal is only surrounded by one side of the die. In the die or closed die forging method, the metal work-piece is enclosed in the die and pressure is applied to the die. The workpiece deforms plastically and fills the cavity. Compared with open die forging, closed die forging has less flash and less draft. Some common forging methods using closed die are die pressing and hub forging.

What is hydraulic open die forging press

Hydraulic open die forging machine is a full hydraulic control forging equipment which uses hydraulic energy to transfer energy. It is mainly used for casting alloy steel, stainless steel, high alloy steel and other metals. It can realize high-speed forging, common forging, clamping parts and other functions.

Forging press is mainly used for industrial open die forging, such as upsetting, punching, reaming, straightening, cutting, bending, drawing, etc. it can be used to produce large size and high quality open die forging in petrochemical, metallurgy, mining, electric power, aerospace and other fields.

Application of hydraulic open die forging press

In large-scale mechanical equipment and important equipment, such as steel rolling, power station (hydro-power, thermal power, nuclear power), petroleum, chemical industry, shipbuilding, aviation, aerospace, heavy weapons, etc., large-scale free forging and large-scale die forging hydraulic press are used to forge these large forgings.

Therefore, the production of heavy forgings is very important in advanced industrial countries. The industrial level and national defense strength of a country can be measured by the variety, quantity and grade of large-scale free forging hydraulic press and large-scale die forging hydraulic press owned by a country.

Large die forging high pressure heat press machine is mainly used for hot forging and isothermal super-plastic forming of aluminum alloy, titanium alloy, super-alloy, powder alloy and other hard to deform materials.

The forging characteristic is that the density of the deformed material can be improved by large pressure, long holding time and slow deformation speed. The comprehensive performance of the forging can be improved by refining the material grain, and the deformation uniformity of the whole forging can be improved. The hard to deform material and the forging with complex structure can meet the design requirements through isothermal forging and superplastic deformation. The material can be saved by 40% and the machining capacity can be achieved less or near net target.

Isothermal die forging hydraulic press is the key equipment for aerospace, aerospace and other important machinery to produce important forgings.

Friction screw press working principle

Friction screw press working principle for die forging

The working principle of the friction screw press is to use the contact transmission of the flywheel and the friction disk, and to work by the principle of relative movement of the screw and the nut. The press is usually driven by the motor through the friction disk to drive the flywheel rim to rotate the flywheel, so this type of press is also called a friction press. The largest friction press in China is 25 trillion Newton. Larger presses use a hydraulic system to drive the flywheel , Known as hydraulic screw press, the largest specification is 125 trillion N. Later, there was an electric press that directly drives the flywheel with a motor. It has a compact structure and fewer transmission links. Due to frequent commutation, it requires higher control electrical appliances, and requires a special motor.

Friction screw presses

There is no fixed bottom dead center of the rotary press, and the larger die forgings can be shaped multiple times, and can be singles, continuous and inching. The striking force is related to the amount of deformation of the workpiece. When the deformation is large, the striking force is small, and when the deformation is small (such as cold strike), the striking force is large. In these respects, it is similar to the forging hammer. However, its slider speed is low (about 0.5 meters/ Seconds, only 1/10 of the forging hammer), the impact force is closed by the frame, so the work is stable, the vibration is much smaller than the forging hammer, and no large foundation is required. The automatic heat press is equipped with a slip insurance mechanism to maximize the impact force Limit to less than twice the nominal pressure to protect the safety of the equipment.

The lower part of the press is equipped with a forging ejection device. The screw press has the function of various screw press forging machines such as die forging hammer and mechanical press. It has strong versatility and can be used for die forging, punching, drawing and other processes. In addition , Screw presses, especially friction presses are simple in structure and easy to manufacture, so they are widely used. The disadvantage of screw presses is lower productivity and mechanical efficiency.

Solution to the use problems of electric screw presses

We all know that electric screw presses are widely used in many fields. It is generally believed that electric screw presses are used in industry. In fact, their appearance will appear in many industries and are indispensable tools in our production. With it , Our forging work can become smoother. However, no matter how good the performance of the device is, after a period of use, it will cause equipment failure due to various problems, which will affect the normal use and use effect.

Solution to the use problems of electric screw presses

In order to help users solve various problems in the use of electric screw press machine, the following content will provide relevant insights:

1. Component repair method. Remove the entire parts that need to be repaired by the electric screw press, replace it with a set of parts prepared in advance, and then send the replaced parts to the repair shop for repair, so that they can be used again next time. This method will save the assembly time of parts disassembly and shorten the downtime of repair. Especially when the newly replaced parts are not properly sized with the original parts, or the original parts are difficult to disassemble, it will affect the production due to too long downtime for repairs. In this case, this method is more suitable, such as the repair of the vacuum brick extruder or the repair of the mixing shaft of the mixer.

2. Divisional repair method. The characteristic of this method is that the various parts of the equipment are not repaired at the same time, but are repaired separately in order according to the individual parts of the entire equipment, and only part of them are repaired at a time. This method has short downtime for each repair and will not affect production. For example, the overhaul of the non-burning electric screw press forging can be divided into three parts: replacing the twister, repairing the transmission shaft, and reducing the gear. The downtime of each repair is short, and the equipment utilization rate of the brick extrusion machine can be improved.

3. Synchronous repair method. This refers to several equipments that are closely related to each other in the process, and they are scheduled to be repaired at the same time to achieve synchronization of repairs to reduce downtime for scattered repairs.

Through the introduction of the solutions to the failure of the electric screw press, it is not difficult to see that no matter which method can effectively solve the problem, but the steps of each method are different, and the failure occurs when the equipment is used. At that time, we can choose the method that suits us according to our needs and actual situation. Of course, we must regularly check and maintain the equipment during use to reduce the probability of equipment failure.

Automatic friction press machine for sale

Automatic friction press machine operation rules

Automatic friction press is a versatile pressure processing machine, which is widely used and can be used in various industries of pressure processing. Since its creation, friction presses have played an important role in industrial development. In order to regulate its operation, it is necessary to pay attention to follow the process:
1. Wear and wear protective equipment.
2. Observe the general safety technical operation regulations of shear punching machinery.
3. The mold closing height must be checked before installing the mold. The closing height can only be installed within the allowable range. Adjust the upper and lower strokes of the punch to keep it within the specified safety range.

friction press machine operation rules
4. When the device is put on the mold, it should be aligned with the hole of the mold handle, so as not to bite the edge of the hole when the slider falls. The area of ​​the template should not be too small to avoid crushing the upper die hole.
5. When using the top material, the length of the rods on both sides should be adjusted to be consistent, and must not be skewed.
6. The process of starting the equipment is to start the oil pump (or first open the compressed air valve) and then start the friction wheel motor. The opposite is true when stopping. The motor driving the friction wheel should be turned off before the oil pump (or compressed air valve) is turned off.
7. Pay attention to whether the oil pump pressure or compressed air pressure is normal when working.
8. No other work such as machine tool adjustment or mold installation is allowed while the flywheel is rotating.
9. After the work is completed, put the punch down smoothly and close the car in order.
The advantages of automatic press machine: it has the characteristics of simple structure, small size, short transmission chain, convenient operation, safe operation, and small maintenance workload. The press can accurately set the strike energy, the strike force is displayed, and can be based on the molding accuracy Adjust the energy and impact force to reduce the mechanical stress and thermal contact time of the mold and extend the life of the mold. Automatic friction screw presses have two transmission forms: one is the screw press transmitted through the first gear, the specifications are 0.4MN ~ 80MN, and the other is the direct drive electric screw press, the specifications are 0.16MN ~ 16MN . The press has good rigidity, high guiding precision of the slider, and strong anti-eccentric load capacity. It can be used for multi-station die forging and is a new type of energy-saving and environmentally friendly press.

four forms of industrial forging presses

Several forms of industrial forging press machine

Forging is a common name for forging and stamping. It uses the hammer head, anvil, punch or through the die of the forging machine to apply pressure to the blank to make it plastically deformed to obtain the desired shape and size. Forging machine tools are equipment for cold working of metal and machinery. It only changes the outer shape of metal. This machine tools include plate bending machine, shearing machine, punching machine, hydraulic machine, bending machine, etc.

 Several forms of forging press

There are four forms of industrial forging presses:

1. Spiral forging machine

The forging machine that reverses the rotary motion into the up and down reciprocating motion of the slider. The screw press machine is usually driven by the motor through the friction disk to drive the flywheel rim to make the flywheel rotate, so this press is also called a friction press. The largest friction press in China is 25 trillion cattle. Later, electric screw presses that used motors to directly drive the flywheel appeared. It has a compact structure and few transmission links. Due to frequent commutation, it requires higher control electrical appliances and special motors.

2. Extrusion forging machine

Hot extrusion forging presses are widely used in the production of pipes and profiles for non-ferrous metals such as aluminum and copper, and belong to the scope of the metallurgical industry. Hot extrusion of steel is used not only to produce special pipes and profiles, but also to produce solid and hole (through or non-through holes) carbon steel and alloy steel parts that are difficult to form by cold or warm extrusion, such as rods, barrels, containers, etc. with large heads. The cold extrusion forging press was originally only used to produce pipes, profiles such as lead, zinc, tin, aluminum, copper, etc., as well as toothpaste hoses, dry battery shells, bullet shells and other parts . The cold extrusion operation is simple and suitable for smaller parts produced in large quantities.

3. Mechanical pressure forging machine

The mechanical pressure forging press converts the rotary motion of the motor into the linear reciprocating motion of the slider through the crank slider mechanism, and is a electric forging press that performs forming processing on the blank. The mechanical press is stable and reliable, and is widely used in stamping, extrusion, die forging and powder metallurgy processes. The number of mechanical presses accounts for more than half of the total number of various forging machines. The specification of the mechanical press is expressed by the nominal working force (kN), which is the movement of the slider to the bottom dead center of the stroke about 10 to 15 mm (or the crank angle from the bottom dead center is about 15 ° to 30 °) is the maximum working force designed to calculate the base point.

4. Roll forging press

A metal forging method in which a metal billet passes through two relatively rotating sector dies and undergoes plastic deformation to form a workpiece. It is a special form of forming rolling. Roll forging can be used to produce connecting rods, twist drills, wrenches, spikes, hoe, picks and turbine blades. The roll forging process uses the rolling forming principle to gradually deform the blank. Compared with ordinary die forging, it has the advantages of simple equipment structure, stable production, low vibration and noise, easy automation, and high production efficiency. Roll forging is divided into two types: blank roll forging and forming roll forging. Billet roll forging is to prepare blanks of required shape and size for die forging; forming roll forging can directly produce forgings that meet the shape and size requirements.

the price of friction presses

Factors affecting the price of friction presses

Friction press is a screw press using friction drive method, also known as double-disk friction screw press. It is a versatile pressure processing machine with a wide range of applications and can be used in various industries of pressure processing. In the machinery manufacturing industry, the application of the press is more extensive, and can be used to complete the work of die forging, upsetting, bending, correction, precision pressing, etc., and some flashless forging is also completed by this press.

Factors affecting the price of friction presses

For the price of friction presses, this issue has attracted a lot of attention because bricks are a very important material in our construction industry. Any building we build will use bricks as the corresponding material. It is in this situation that the demand for bricks in the construction industry is very large. Correspondingly, more and more brick manufacturers are appearing. They will also choose presses to help themselves in the production of bricks, it is brick press machine.

The price of friction presses will also be affected according to different models and different sizes. The corresponding prices of different models or different sizes of presses will also be different. Different manufacturers require different equipment power, and the size of the equipment will be different. We choose equipment with larger specifications, and the corresponding price will be higher. After all, the cost of manual production and materials for large equipment will be relatively higher. Moreover, large equipment will take longer to produce, so the overall cost will be more expensive. The price of our press is very different from our model, and the overall price will also be very different, so we need to choose the press machine that suits our specifications and size according to our needs.

The price of friction presses will also be very different in different regions. The corresponding labor costs and material costs will also be different in different regions, which will have an impact on our overall equipment costs. Of course, different manufacturers in each region will have different overall processing and transportation costs, and the cost of the equipment itself will also fluctuate. Related Reading: Automatic friction press machine operation rules

Through the different factors above, we also know that the price of friction presses is affected by many different factors, and they will also be controlled by these different factors, and price fluctuations will definitely exist. Then when we choose to buy, we can compare several brands of different brands. While choosing good quality equipment, we must also ensure that the overall cost is reasonable, so that we can choose a satisfactory press.

refractory brick presses

Types of presses commonly used in refractory brick production workshops

In the production process of refractory bricks, the molding process is its most important part. When producing refractory bricks, the entire molding process setting is often related to the product density. Under the premise that there is no problem with the raw materials, the general product density meets the prescribed requirements that there is basically no problem with other indicators. For this reason, we generally control production according to the density of bricks. The types of presses commonly used in refractory brick production can be basically divided into three categories:

Types of presses commonly used in refractory brick production workshops

1. Friction press

Friction press is also called double-disc friction press. They mainly rely on friction to transfer energy, hence the name. During work, the vertical and flat wheels rub against each other, lift the slider, store energy, and then release it to generate impact pressure. The whole process is simple and clear. The structure, operation and auxiliary equipment of the friction press are very simple, and the price of the accessories is low, so that it is very easy to accept whether it is the procurement cost or the training of the operator and maintenance worker. Therefore, many industries such as machinery manufacturing, automobile manufacturing, forging and refractory are widely used.

At present, the main friction press models commonly used in the refractory brick production workshop are: J67-300T, 400T, 630T, 1000T, 1600T; J93-400T, 630T, 1000T, 1600T, such as J93 Series Refractory Friction Screw Press For Brick, J67 Series Refractory Friction Screw Brick Press Machine, etc.

2. Electric screw press

The electric screw press is a new type of forging equipment with wide application and strong applicability. Its structure is simple and its capacity is large. In order to facilitate the later mold design, the slider designed by the electric screw press has no bottom dead center. Both are very simple. The electric screw press can be used not only for hot forging, but also for precision forging and finishing, with a wide range of applications, such as various precision forging, finishing, precision pressing, embossing, correction, calibration, and forging precision .

The electric screw press is small in size, without vertical wheels, simple in operation, safe in operation, and accurately adjustable in striking force, so the mold wear rate is low, the maintenance cost in the later period is low, and the workload is small. The electric screw press is well-designed, the guide precision of the slider is high, and the ability to resist eccentric load is strong, which is very suitable for multi-station die forging. According to the needs of the use environment, there are two types of transmission methods for the electric screw press. One is the belt drive, and the belt-driven electric screw press has good shock resistance; the other is the gear drive, and the gear-driven electric screw press has good rigidity.

3. Hydraulic press

The hydraulic press is a fully automatic equipment controlled by PLC, which is a combination of mechanical, electrical and hydraulic. It is mainly composed of the following modules: hydraulic system, electrical control system, mechanical system, human-computer interaction system. Through the cooperation of various modules to achieve the work of feeding, pressurizing, mold release, brick clamping and so on.

The presses for the production of the above three types of refractory bricks have their own characteristics and their own advantages and disadvantages. Therefore, customers need to choose according to their actual production needs and capabilities.