Molding usually uses polypropylene, polyethylene, and acrylonitrile butadiene styrene . Because they are cheap and useful camparing with other kinds. The stuffs used should be determined by the product itself and its purpose.

An injection mold generally costs depends on a number of factors, including size and complexity, impact the final price. To read more about the cost of injection molding, wecome to contact China FHZ Machinery Co., LTD..

Among the more expensive materials used in plastic injection molding are Polycarbonate, Polysulfone, Teflon, Polyurethane and Acetal. These materials are generally stronger or have special properties that make them suitable for specialized functions. Additives and other components can make these plastics even more durable but do add to the price.

Plastic injection moulds' materials with the lowest cost, generally polypropylene and polyethylene, are incredibly versatile and are used to make everything from milk jugs to car batteries. These are the materials most people use every day and low material costs help make mass production possible.

 

The cost of the materials used in your project also depends on the design, the materials selected, and the quantity required to complete the project.

 

There are a wide variety of machines used for injection molding. The cheapest option is a small desktop injection molding machine. Small desktop injection molding machines are the most cost-effective option for producing small quantities of parts. If your project requires large industrial molding machines operated by service providers and large manufacturers, you will have to spend a lot. Unlike small desktop injection molding machines, these large machines require professionals who can operate, maintain, and monitor the machines, which also adds additional costs.

When thinking about what material to use for your plastic injection molding, it’s important to remember that the function of the product should determine the material used. Having an understanding of the options available and the prices associated with those materials will help you to make an informed decision.

 

Storage racks are the most frequently used equipment in the warehouse. Now various kinds of racks are developed to meet the requirements of different goods and warehouses, double-depth rack is one of them. Do you know what double-depth storage shelves are?

The double-depth rack is an upgraded version of the pallet rack. Compared with the ordinary rack, the double-depth rack saves a forklift aisle. Therefore, under the same warehouse area, the double-depth rack can store more products.

Under normal circumstances, it is suitable for companies and enterprises with more goods to be used together with the corresponding forklifts. Widely used in tobacco, food and beverage, packaging and other industries, the specifications of such shelves can also be appropriately changed according to customer needs.

Features of kingmorestorage double depth storage shelves:

1. It is suitable for warehouses with low pickup rate.

2. Same simple structure as pallet racks( frames, beams, row spacer, etc.).

3. Since there are two rows of goods in the picking direction of the stackers, so it needs to be equipped with a special forklift, and the forklift channel needs to be about 3.3 meters.

4. In a warehouse of the same area, compared with the single-deep racks, since there are 4 sets of racks in parallel, the channel position is reduced, and each storage line can store more than double the pallets, so the inventory is larger than the single-deep racks.

5. The access operation of the back row goods will be affected and it is difficult for the shelves to be first in first out.

6. The construction cost for each pallet is the lowest among all the warehouse systems.

 

 

The service life of plastic injection molds ranges from hundreds to more than a million times. The service life of plastic injection molds depends on their environment, materials, maintenance, production, design and other factors.

 

1. Environment. The cleaner the environment, the longer the mold service life. The working conditions of plastic injection molding product will not only seriously affect the service life of the molds, but also the oil stains and other untimely cleaning will corrode the surface of plastic molds. Harsh and dirty environments will shorten the life of molds, while molds used in very clean environments can be used for decades.

 

2. Materials. Injection molding are susceptible to wear and tear due to their lack of hardness. The material of the mold may vary depending on the details of the injection molding process of the required parts. Harder plastics will last longer than softer plastics. In addition, the machine that makes the mold contains more impurities, which may also interfere with the injection mold itself. The corrosion resistance of the product will be affected to a certain extent.

 

3. Maintenance. Regular maintenance can improve the durability of the mold. Organizing and arranging personnel for regular maintenance is crucial to the service life of plastic injection molds, and can even extend the service life by several years. Therefore, it is also important to develop the habit of regular maintenance.

 

4. Operations during production. Premature exhaust, long cooling time, and unhooking pins before the scheduled time are examples of such errors. Excessive force during fixing can easily cause mold deformation. Temperature control during the process can also help extend the life.

 

5. Mold structure design. Ingenious mold structure design can improve efficiency and thus extend the life of the mold. Designers can also improve the service life of plastic injection molds by avoiding some defects during design.

 

 

 

The improvement of power quality is mainly through power quality equipment and current signal and other parameters in the current transformer detection system, so as to correctly control the power quality problem in real time and improve the environment of the distribution system. 

For capacitor bank, we usually only use a CT mounted on the power side for sampling. 

For SVG / APF, a set (3) CT is required for the three phases of the system, which is usually recommended to be installed on the load side.

Current transformer is an electrical device used for measurement and protection. Its main function is to convert large current into small current to facilitate measurement, control and protection. In practical applications, the secondary side of the current transformer cannot be open-circuited for the following reasons:

1. Principle of electromagnetic induction: The working principle of current transformer is based on the principle of electromagnetic induction, that is, when there is current passing through the primary side, a corresponding electromotive force will be generated on the secondary side. If the secondary side is open-circuited, the electromotive force cannot form a loop, causing the output signal of the transformer to be unable to be transmitted.

2. Magnetic saturation phenomenon: When the primary side current of the current transformer is too large, the magnetic flux on the secondary side will also increase, which may lead to magnetic saturation. Magnetic saturation will cause the measurement error of the transformer to increase and may even damage the transformer. Therefore, in order to ensure the accuracy of measurement and the safe operation of the transformer, the secondary side cannot be open circuit.

3. Thermal stability problem: The iron core of the current transformer will generate heat during operation. If the secondary side is open, the heat cannot be dissipated, which may cause the temperature of the transformer to rise. Excessive temperature will affect the performance and life of the transformer, and may even cause safety accidents such as fires. Therefore, in order to ensure the safe operation of the transformer, the secondary side cannot be open circuit.

4. Protection function failure: The current transformer has a protective function in the power system. When short circuit, overload and other abnormal conditions occur on the primary side, the secondary side will induce corresponding current, thereby protecting the primary side equipment. If the secondary side is open-circuited, this protection function will fail, which may cause damage to the primary side equipment or a safety accident.

5. Measurement error: The measurement error of the current transformer is related to the load on the secondary side. When the secondary side is open circuit, the measurement error will increase because there is no load. In order to ensure the accuracy of measurement, the secondary side cannot be open circuit.

6. Affects the normal operation of the relay protection device: In the power system, the secondary side of the current transformer is usually connected to the relay protection device to protect the primary side equipment. If the secondary side is open-circuited, the relay protection device may not work properly, causing the protection function to fail.

To sum up, in order to ensure the measurement accuracy, safe operation and effectiveness of the protection function of the current transformer, the secondary side cannot be open circuit. In practical applications, it should be ensured that the secondary side of the current transformer is always closed to avoid open circuit. At the same time, attention should also be paid to the selection, installation and maintenance of current transformers to ensure their normal operation in the power system.

 

Kenmold exported 8 million US dollar prodcuts in Europe and North America market in 2017, including more than 300 injection tools and half million molded parts for automotive, home appliance, electronics and medical OEM industries.

 

We have 22 high-precision CNC-Machines, including 2 sets of 5-axis high-speed machining center.

 

We have 25 molding presses ranging from 50 tons though 1800 tons.

 

We have a Class 4 clean room with grade 10,000 and 100,000 in house, certified with ISO 13485--Medical devices-quality management systems Requirements for regulatory purposes, that supports medical OEM molding and assembly.

 

Customer satisfaction is the only standard to judge if it is a good mold or molded part.

 

What Kenmold provide with oversea customers is beyond their expectation—I am not talking about the quality, less cost, in time delivery, or close communication, actually, every Kenmold staff treat the molds and molded parts like their own kids. Because each part is unique, when you build a mold for it, you have to think about why this mold? Why this design? Why the cavity has to be 2344 orH13? Is there any possibility to reduce cycling time one more second?

 

 

Over 90% of our customers are from Europe and the United States. What is the most difficult thing to make the molds and molding the parts for Europe and North America customers? Communication. We have US offices in Arizona and Kentucky. With both Chinese and American teams we are able to provide our customers with 24-hour communication service. Even our technicians in the U.S. can be dispatched to our customers at any time for on-site meetings.

 

Related reading:Plastic Injection Mold Tooling,Automotive Plastic Parts,Two Shot Injection Molding.

 

 

With the rapid growth of the global population and the impact of climate change, freshwater resources have become a major challenge we face. Fortunately, technological advancements have made seawater desalination systems an innovative solution to address the issue of water scarcity. This blog will introduce what seawater desalination systems are, how they work, and their application areas.

 

 1.what are seawater desalination systems？

 

Seawater desalination systems are technologies that convert seawater into usable water for drinking, irrigation, and other purposes. They remove salt and other impurities from seawater, transforming it into freshwater. Various techniques can be used in seawater desalination systems, including distillation, reverse osmosis, and electrodialysis.

 

2.working principles of seawater desalination systems

 

The working principles of seawater desalination systems vary depending on the technology employed. The most commonly used technique is reverse osmosis. Reverse osmosis seawater desalination systems utilize a series of membranes, which under pressure, filter out salt and impurities, leaving behind pure freshwater. This technology is efficient, reliable, and adaptable to various scale requirements.

 

 3.Application areas of seawater desalination systems

 

Seawater desalination systems find widespread applications in many areas, particularly in regions facing water scarcity. They are extensively used for water supply, agricultural irrigation, industrial water usage, as well as on offshore platforms and ships. Seawater desalination systems not only address the issue of freshwater scarcity but also provide a renewable water resource, contributing to social and economic development.

 

 4.Advantages of seawater desalination systems

 

Seawater desalination systems offer several advantages, including providing renewable water resources, reducing dependency on groundwater, and addressing droughts caused by climate change.

 

 conclusion:

 

Seawater desalination systems, as an innovative solution to address water scarcity, hold tremendous potential. Through ongoing technological innovations and sustainable development efforts, seawater desalination systems can offer renewable freshwater resources globally, helping humanity overcome water resource challenges and achieve sustainable development goals.

Tube sheet refers to the plate used for supporting and protecting pipelines. Pipelines are usually connected to the tubesheet through mechanical fixation or welding after drilling. In addition to serving as a fixing function, the pipe plate can also withstand the fluid and pressure inside the pipeline, reducing vibration and damage during operation. Carbon steel tube sheet, as a common tube sheet material, has a wide range of applications.

 

 

Carbon steel tube sheets are mainly composed of iron and carbon, which contain a high proportion of carbon elements, usually between 0.2% and 2.1%. In addition, it may also contain small amounts of elements such as manganese, silicon, and phosphorus, which can improve the strength and corrosion resistance of carbon steel plates. Here are some main advantages and disadvantages of carbon steel pipe sheets:

 

Advantages:

1. High cost-effectiveness: Carbon steel, as a common and economical material, is more affordable compared to other high alloy materials, making carbon steel pipe sheets the preferred choice in many applications.

 

2. High strength: Carbon steel is a type of steel with high strength, and its tensile strength is usually between 400-550MPa. This enables carbon steel plates to have high strength and rigidity under heavy loads and high pressures, enabling carbon steel pipe plates to maintain stability and reliability in high temperature and high pressure environments.

 

3. Good wear resistance: Carbon steel plates can achieve higher hardness and good wear resistance after heat treatment. Therefore, in some situations where wear resistance is required, carbon steel plate is the preferred material.

 

4. Easy to process and weld: Due to its low carbon content, carbon steel plates have good plasticity and weldability, and can be processed through various methods such as cold processing and hot processing. This makes the manufacturing and installation process of carbon steel pipe sheets relatively simple and efficient, reducing production costs and time.

 

5. Good environmental performance: Compared to other materials, carbon steel plates have better environmental performance. It can be recycled and reused to reduce resource waste and also reduce environmental pollution.

 

 

 

 

Disadvantages:

1. Easy to corrode: Carbon steel plates are prone to rusting, which is one of their biggest drawbacks. Due to the high content of iron in carbon steel plates, rust will occur when they react with oxygen in the air. This not only affects the appearance, but also leads to corrosion and damage to the surface of the board. Compared to stainless steel and other high alloy materials, carbon steel is more prone to corrosion in corrosive environments such as humidity, acidity, and alkalinity, which may lead to damage and shortened lifespan of the tube plate. To address corrosion issues, surface coatings or the use of anti-corrosion coatings can be used to enhance the corrosion resistance of carbon steel pipe sheets.

 

2. Not suitable for high temperature and strong acid environments: Carbon steel has lower temperature and acid resistance than high alloy materials, so in some applications that require high temperature or acidic media, carbon steel pipe sheets may not be suitable. This drawback can be avoided by welding other alloy materials to alter the performance of the contact surface.

 

3. Heavy weight: Compared to some lightweight alloy materials, carbon steel pipe sheets are relatively heavy, which may increase installation and maintenance difficulties.

 

 

In summary, carbon steel pipe sheets have advantages such as high cost-effectiveness, high strength, and ease of processing. However, their corrosion resistance, temperature resistance, and weight need to be evaluated based on specific application environments, and suitable materials should be selected to meet the requirements.