1. Glue leakage at the Hot melt gluing nozzle 

If glue leaks from the nozzle during glue spraying, the possible reasons are as follows:

a. The temperature of the glue gun is not enough. The temperature of the hot melt glue gun should be increased appropriately.

b. If the pressure or flow rate of the air jet is too small, glue will drip from the nozzle. Increase the pressure of the air blowing pipe appropriately.

c. If the air passage in the nozzle is blocked, remove the nozzle module and clean it.

2. If glue leaks from the nozzle when the machine is not spraying glue, the possible reasons are as follows:

a. The thimble does not completely close the glue channel, and it is necessary to increase the pressure on the air channel of the solenoid valve of the glue gun.

b. The ejector pin is damaged and needs to be replaced.

c. The ejector pin and the outlet of the glue channel do not cooperate well. Adjust the fine-tuning bolt on the ejector pin to press down on the ejector pin and then loosen the bolt. Manually operate the solenoid valve on the glue gun several times.

3. The small hole in the middle of the needle valve leaks glue.

a. The sealing ring underneath the needle valve needs to be replaced.

Generally, after half a year or a year of use, the glue pipeline of the PUR hot melt adhesive machine needs to be cleaned and maintained.

What are the advantages of regular maintenance?

It can increase the fluidity of glue and improve the glue effect.

1. Ensure the quality of PUR hot melt adhesive

Clean pipes can prevent PUR hot melt adhesive from remaining, solidifying or deteriorating in the pipes, ensuring that the PUR hot melt adhesive is fresh every time it is used. This is particularly important for application scenarios that require high-precision bonding to ensure the stability of product quality.

2. Improve production efficiency

Pipe cleaning can avoid production interruptions due to blockages and reduce downtime. The smooth glue feeding process can ensure the continuous operation of the production line and improve production efficiency.

3. Extend equipment life

Residue in pipes can cause corrosion or wear on the inner walls of pipes, and regular cleaning can reduce this damage. Well-maintained equipment generally has a longer service life, reducing equipment replacement costs.

4. Reduce failure rate and maintenance costs

Duct cleaning can reduce equipment downtime caused by blockages, leaks, and other failures. Reducing failure rates can reduce maintenance costs and improve equipment utilization.

5. Reduce security risks

Residue or blockage in pipes can cause equipment overheating, leakage, and other safety hazards. Through regular cleaning, these risks can be reduced and production safety ensured.

The 75MN horizontal short-stroke front-loading single-action aluminum alloy profile extrusion machine adopts a horizontal three-beam and four-column prestressed composite frame structure, a forward extrusion method, direct drive by an oil pump, and is equipped with advanced foreign electromechanical and hydraulic control components and systems, and The complete set of mechanized auxiliary equipment adopts PLC and computer two-level control to accurately control the speed, position and pressure of the press. The technology used embodies the development trend and advanced technology level of contemporary extrusion presses, and is suitable for production. Manufacturing, operation and maintenance are conducive to improving production efficiency and reducing usage costs.

Prestressed composite frame

The stress-bearing frame of the Aluminum extrusion machine body consists of an integral front beam ZG35Mn (thickness 1950mm) and a rear beam thickness 1800mm (materialZG35Mn), square prestressed sleeve (material ZG35) is a closed prestressed composite frame. Special hydraulic preloading tools are used to pull the An over-pressure tensile load is applied to the entire length of the rod, and compressive stress is applied to the pressure sleeve at the same time, so that the entire frame is in a stress pre-tightened state.The column prestress is above 115% of the maximum load.

(1) The center distance of the four stressed tie rods of the frame is symmetrical to the center of the press, so that the entire frame is stressed evenly. This can increase the squeeze

Accuracy of pressed products.

(2) Since the frame has a large bending resistance section, under the action of extrusion force, the frame elongation and bending deformation are small, so it is the frame can be fixed with horizontal and vertical guide rails at the bottom of the extrusion beam and extrusion barrel.

The centering adjustment is very convenient, and the upper frame can be used as an X-shaped moving guide rail for the extrusion barrel.

(3) There are two sets of elastic anchoring devices and foundation anchors at the lower part of the rear beam to make the rear beam fixed reliably.

Main working cylinder/side cylinder

1. The main working cylinder of aluminum extrusion press is a plunger cylinder, which is fixed to the center of the rear beam through four pressing blocks. The plunger diameter is Φ1740mm, and the medium pressure is 28Mpa. Under the action, it can produce 66.55MN extrusion force. The cylinder body is made of 20MnMo forged steel. After forging and tempering treatment in three sections, it is buried Arc narrow gap welding, processed according to GB\T6402\2008 II level flaw detection. The main plunger is made of forged steel. The outer surface Stainless steel cladding is welded to 2Cr13 with medium frequency treatment, surface hardness is HRC46~48, and polishing degree is 0.2um. V-ring used for master cylinder seal Combined seal, using copper sleeve inner guide

2. The two main side cylinders are horizontally fixed on both sides of the rear beam main working cylinder. The diameter of the side cylinder is Φ450/Φ320mm, which generates an extrusion force of 8.9MN and a return force of 4.4MN, which can realize the rapid forward, backward and extrusion of the main plunger. The cylinder block and piston rod are made of 45 forged steel quenched and tempered. The two-way seal and piston rod seal of the combined piston head adopt V-ring combined seals, and are guided by copper sleeves.

Hydraulic transmission and control system pump station

The pump station of the Aluminum extrusion press adopts an integrated design and is centrally arranged under the rear part of the oil tank of the press. It is composed of an imported German Rexroth electro-hydraulic proportional control axial piston variable pump and a Chinese-made stainless steel plate circulation filtration and cooling system. The piping system design adopts necessary buffering and anti-shock measures, such as cushioning pads, hoses or shock-absorbing hoses, and flexible rubber pipe joints that can absorb vibration. The main system consists of 10 355L/min plunger pumps and 10 320L/min vane pumps from the German REXROTH company. They are designed to be arranged and matched in a certain combination. They can generate a pressure of 28Mpa and a flow rate of 3350L/min to meet the needs of main and side work. According to the cylinder operating speed requirements, closed-loop adjustment of the extrusion speed of 0~21mm/s is achieved, and the extrusion barrel locking cylinder is matched with a dedicated oil pump. Isolation control valves are designed between each oil pump group. If the two mechanisms need to operate at the same time according to the program, they can not interfere with each other. It can realize functions such as isolation between pumps, no-load starting, pressure regulation and overload protection. The pump head electro-hydraulic proportional valve and electronic control device are imported with the main pump and connected with the press main control computer to achieve online control. The main oil cylinder, auxiliary oil cylinder, spindle cylinder, and scissor oil cylinder are integratedly controlled by logic valves. The sliding mold and supporting frame are integratedly controlled by three-position four-way electro-hydraulic reversing valves. Main hydraulic components: master cylinder reversing surface valve, overflow surface valves etc. The main control system oil pump station has a total flow rate of 3350L/min, and its oil pumps are individually controlled.

The design of each aluminum extrusion machine is to maximize the use of resources under the premise of ensuring quality, and has been in a leading position in the industry.

Salt and Sand Spreader - a solution for efficient and spreading of salt and sand. Designed with utmost expertise, this revolutionary product is built to enhance your snow removal tasks and ensure safe and-free pathways, driveways, and roads during winter.

Equipped with the advanced T-SPR-250 technology, this salt spreader sets the bar high when it comes to versatility and performance. With the optional tow bar, it offers seamless mobility, making it compatible with a wide range of vehicles. The 3-point suspension, categorized as I/II, provides stability and ensures smooth operation in any terrain.

One of the standout features of this incredible spreader is the innovative design of its rotor. Powered through the left wheel, it guarantees efficient salt and sand distribution. What sets it apart is the incorporation of studded tires, which automatically disengage the roller drive when the unit moves in reverse. This not only ensures safety but also avoids wasteful overuse of the salt or sand.

Furthermore, the rotor action can be effortlessly deactivated through a fitting on the wheel, offering unprecedented control and flexibility. Whether you need to switch between materials or adjust the spreading rate, this intelligent mechanism grants you unparalleled precision.

Don't compromise on the quality and effectiveness of your winter maintenance. With the Salt and Sand Spreader, you can say goodbye to uneven application and hello to impeccable results. Its impeccable construction, coupled with its ability to distribute salt and sand evenly, guarantees enhanced traction and minimized accidents caused by icy conditions.

Choose the Salt and Sand Spreader and make snow removal a breeze. Experience the power of cutting-edge technology combined with superior craftsmanship. Ensure the safety and well-being of your community with a product that surpasses expectations and sets a new standard in snow management.

Stay ahead of the curve this winter. Invest in the Salt and Sand Spreader today and witness the difference it can make in transforming your snow removal experience. Act now and let the outstanding performance of this premier spreader speak for itself.

An automatic UV sterilizer is a machine that utilizes ultraviolet light to kill bacteria. It has such as high efficiency, safety, and environmental friendliness. It is suitable sterilization treatment of various bottled and canned food, beverages, medicines, and other products. It can eliminate microorganisms such as bacteria, viruses, and parasites to ensure the quality and safety of the products.

The scientific principle behind UV disinfection mainly targets the DNA of microorganisms, disrupting their DNA and rendering them unable to reproduce and replicate, thus achieving the purpose of sterilization and disinfection.

 

The machine typically consists of a conveyor belt, UV sterilization lamps, and a control system. During operation, bottled or canned products enter the sterilization chamber via the conveyor belt, and the UV sterilization lamps irradiate the surfaces of the products, killing the microorganisms present. The entire sterilization process is conducted in a closed environment, ensuring the hygiene and quality of the products.

 

The automatic UV sterilizer has the following advantages:

 

• Efficient sterilization: Ultraviolet light possesses high energy and penetration, capable of killing various microorganisms, including bacteria, viruses, and parasites.

 

• Safety and environmental friendliness: UV sterilization does not produce chemical residues and is harmless to the environment and human health. However, when used in non-sealed conditions, it can still be harmful to the human body. Please pay attention to safety and use with caution.

 

• Easy operation: The machine is equipped with an intelligent control system that enables automated operation and monitoring, thereby improving production efficiency.

 

• Strong adaptability: The UV sterilization machine is suitable for products of different shapes and sizes. The position and quantity of the sterilization lamps can be flexibly adjusted.

In practical applications, the equipment can be used for sterilizing surfaces and air, and it is widely applied in multiple fields such as powdered milk processing plants, food factories, cosmetics factories, dairy farms, breweries, beverage factories, and bakeries.

 

As people's demands for food health and quality continue to rise, the application of automatic UV sterilization machines will become increasingly widespread. Utrust pack has been committed to research and innovation in the field of food can packaging, adhering to the concept of "beyond needs, we aspire for deeds" and continuously making higher-quality can packaging solutions for customers.

The stable operation of the hydraulic system is essential for the entire production process. As the "blood" of the hydraulic system, the cleanliness of hydraulic oil directly affects the performance and life of the system. Hydraulic Oil Filter Machine as a powerful assistant for hydraulic oil cleaning, has become an important "cleaning guard" in industrial production with its performance and efficient filtration capacity.

​

The main function of the Hydraulic Oil Filter Machine is to remove impurities, moisture and harmful substances from the hydraulic oil by physical or chemical means to ensure the cleanliness of the hydraulic oil. Its working principle is to send the hydraulic oil to be filtered into the filtration system through the oil pump, and finally deliver the clean hydraulic oil back to the hydraulic system through the layers of filtration elements of multi-stage filtration elements. This filtration method can not only effectively remove impurities and contaminants from the hydraulic oil, but also extend the service life of the hydraulic system and improve the stability and reliability of the system.

 

Hydraulic Cleaning overcomes traditional hydraulic oil filtration methods. First of all, it has a high filtration efficiency, which can quickly remove impurities and contaminants from the hydraulic oil, ensuring the cleanliness of the hydraulic oil. Secondly, the filter has a long service life and low maintenance costs, which can reduce the operating costs of enterprises. In addition, the filter also has intelligent control and remote monitoring functions, which can monitor the cleanliness of the hydraulic oil and the operation status of the filter in real time, which is convenient for users to manage and maintain.

 

In industrial production, Hydraulic Oil Cleaning are widely used. Whether in the fields of automobile manufacturing, mechanical engineering or petrochemical engineering, hydraulic systems are used. The Hydraulic Oil Filter Machine can ensure the stable operation of the hydraulic system, improve production efficiency and product quality. In addition, in some special fields, such as aviation, aerospace, etc., the cleanliness of hydraulic oil is required, and the filter plays an irreplaceable role.

 

The Hydraulic Oil Filter Machine has become an important "cleaning guard" in industrial production with its filtration performance, intelligent control mode and wide range of application fields.

Typically, the cooling fan is connected to the system through a three-wire interface, which includes a power cable, a ground cable, and a Tach cable (speed signal cable). In order to be able to read Tach signals through GPIO, you need to select a fan that supports this feature. Such fans are often referred to as "ach-enabled" (supporting Tach) or "RPM-sensing" (supporting speed detection) fans.

The Tach signal is a pulse signal whose frequency is proportional to the speed of the fan. Typically, a pulse signal is generated for each rotational speed cycle. Here are some steps to help you implement a cooling fan that reads Tach signals via GPIO:

1, Make sure that the fan you choose supports Tach function or speed detection function. You can find this information in the fan specifications and instructions.

 

 

 

2. Connect the Tach wire of the fan to the available GPIO pin. This usually requires the use of cables or connectors.

 

 

 

3, Use the appropriate hardware interface circuit to convert the fan's Tach signal into a digital signal that can be read. This is because GPIO typically operates at the digital signal level.

 

 

 

At Chungfo Electronic Technology Co., LTD., we not only provide high quality waterproof exhaust fans, but also various sizes small exhaust fan price are affordable . It can't be ignored that our brushless exhaust fans not only have excellent performance, but also energy saving and environmental protection.

To find the best price on an Electron Spin Resonance (ESR) spectroscopy, you can follow the steps below:

 

1. Explore search platforms

The most direct way is to search for “Electron Spin Resonance (ESR) spectroscopy best price” on major search engines like Google. Use words like cheap, sale, affordable, etc. to describe your needs, and it will be straightforward to find the right EPR spectroscopy at a recognized price, such as the one shown below:

 

2. Explore online B2B marketplaces

Check out online marketplaces that promote scientific instruments. These platforms allow users to find and compare prices for various scientific techniques, including ESR spectroscopy. Examples include GlobalSpec, DirectIndustry, etc. For example:

 

3. Request multiple quotes

When contacting agencies, EPR manufacturers, or vendors, request quotes from multiple sources. Provide them with specific details about the project, including sample type, sample size, data analysis needed, and any special requirements. Comparing multiple quotes will help you find the best price. Many EPR suppliers offer free, comprehensive, customized quotes, such as CIQTEK EPR.

 

4. Consider geographic location

The price of EPR Spectroscopy may vary by region or country. Sometimes, purchasing EPR Spectroscopy from a country with lower labor or equipment costs can result in significant cost savings. For example, CIQTEK's self-developed EPR Spectroscopy has the world's leading EPR technology to maintain high-quality service globally for any customized service and has a very competitive price.

 

5. Research Local Academic Institutions

Contact nearby universities, colleges, and research institutions to inquire about their ESR spectroscopy services. Academic institutions often offer advanced scientific equipment at reasonable prices, especially for researchers and students.

 

6. Collaborate with researchers

Consider collaborating with researchers who have access to ESR spectroscopy equipment. Many researchers are open to collaboration or offer their services at a discounted rate, especially if your project aligns with their interests. Attend scientific conferences, workshops, or networking events to connect with the relevant research community.

 

Keep in mind that while cost is an important factor, ensuring that the service provider delivers reliable, accurate results is also critical. Evaluate their technical expertise, reputation, and experience before deciding.

Scanning electron microscopes (SEMs) are highly advanced and sophisticated scientific instruments that provide high-resolution imaging and analysis of samples at the nanoscale level. There are several renowned scanning electron microscope brands available in Europe that offer state-of-the-art SEMs. Here are a few notable brands:

 

FEI Company (Thermo Fisher Scientific): FEI Company is a leading provider of high-performance electron microscopy solutions. They offer a range of SEMs, including the highly regarded "Quanta" series, known for their exceptional imaging capabilities and versatility.

 

Zeiss Microscopy: Zeiss is a renowned German manufacturer of various optical and electron microscopy instruments. Their SEMs, such as the "MERLIN" and "EVO" series, are known for their advanced imaging technologies, user-friendly interfaces, and precise analytical capabilities.

 

Hitachi High-Tech: Hitachi is a well-established Japanese company with a strong European presence. Hitachi SEMs, like the "SU5000" and "TM4000," are known for their excellent imaging quality, robustness, and a wide variety of applications.

 

JEOL Ltd.: JEOL is a global leader in electron microscopy and analytical instrumentation. Their SEMs, including the "JSM" series, are renowned for their high-resolution imaging, advanced analytical capabilities, and user-friendly interfaces.

 

CIQTEK: CIQTEK is a global supplier and manufacturer of scanning electron microscopes and other high-end analytical instruments. Their tungsten filament scanning electron microscope SEM3200, field emission scanning electron microscope SEM4000 / SEM5000, ultra-high resolution field emission scanning electron microscope SEM5000X, and focused ion beam scanning electron microscope DB500, are high-performance and at competitive prices. 

 

TESCAN: TESCAN is a Czech company that specializes in manufacturing SEMs and other electron microscopy instrumentation. Their SEMs, such as the "VEGA" and "MIRA" series, are esteemed for their outstanding image quality, accurate sample manipulation, and extensive imaging modes.

 

These are just a few reputable brands offering scanning electron microscopes in Europe. Prices for SEMs in Europe can vary significantly depending on specifications, accessories, and additional features. It's recommended to directly contact the manufacturers or authorized distributors to obtain accurate pricing information based on the specific requirements.