According to our colleagues at RMC, 19 year old Brazilian defensive midfielder Gustavo Hebling has reached a contractual agreement with PSG after refusing to signs contract extension with Sao Paulo.
However, there are some hiccups in these negotiations owing to “administrative problems”.
PSG hope to overcome these in the doing days before sending him to Zwolle on a two-season long loan.
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Distillation is a vital process in the chemical industry, and it plays a crucial role in separating different components from a mixture. Distillation columns consist of several components, one of which is the packing. The packing materials are critical in enhancing separation efficiency by providing more surface area for mass transfer. Various packing options are available for use in distillation towers, including tower random packing, metal pall ring, ceramic raschig ring, and saddle ring.
Tower Random Packing
Tower random packing is a type of packing where smaller pieces of packing material are used to fill up a column, giving the packing more surface area. The random packing minimizes the risk of channeling or bypassing, and it is highly effective in enhancing separation efficiency. Tower random packing is also easy to install, and it requires less frequent replacement, making it a cost-effective solution.
Metal Pall Ring
The metal pall ring is another option for packing material used in distillation columns. Pall rings have a design that increases surface area, so they are highly effective in improving mass transfer. Metal pall rings are also resistant to temperature changes, and they are less prone to breaking, making them an ideal choice for high-temperature applications.
Ceramic Raschig Ring
Ceramic raschig rings are made of ceramic materials and are a popular choice for packing material in distillation columns. The rings are small and have a high surface area to volume ratio, making them efficient in enhancing mass transfer. Ceramic raschig rings are also corrosion-resistant, making them an ideal choice for acidic or aggressive media.
Saddle Ring
Saddle rings are another type of packing material used in distillation columns. The saddle ring design adds more surface area and improves mass transfer, making it highly effective in separation. Saddle rings are also resistant to thermal changes, and they are particularly useful in high-temperature applications.
Tower Packing Supplier
When selecting a packing supplier, it is essential to choose a reliable and trustworthy supplier who offers high-quality packing materials. The supplier should also have a range of packing options to choose from, including tower random packing, metal pall rings, ceramic raschig rings, and saddle rings. The supplier should have a proven track record of offering high-quality packing materials that meet the specific needs of their clients.
Keyword: alumina ceramic ball
CHEMSHUN CERAMICS—— East Asia Customer Visiting Chemshun Ceramics
East Asia foreign customers visited Chemshun Ceramics factory, President Mr Zhong exchanged ideas with customers actively in the meeting. Customers are much interested in Chemshun alumina wear-resistant ceramic products. And several cooperation projects wear confirmed during this visit.
Keyword: inert ceramic ball
1) Plastic chemical packingmaterials mainly include polypropylene (PP), polyethylene (PE) and polyvinyl chloride (PVC). Polypropylene is generally used in China. Plastic fillers have good corrosion resistance and can withstand corrosion from general inorganic acids, alkalis and organic solvents. It has good temperature resistance and can be used below 100°C for a long time.
Plastic tower packing are lightweight, cheap, have good toughness, impact resistance, not fragile, and can be made into thin-walled structures. It has large flux and low pressure, and is mostly used in absorption, desorption, extraction, dust removal and other devices. The disadvantage of plastic fillers is poor surface wetting properties, but their surface wetting properties can be improved through appropriate surface treatment.
(2) Ceramic packing have good corrosion resistance and heat resistance. Ceramic chemical fi are cheap and have good surface wetting properties. Their biggest shortcomings are brittleness and brittleness. It is widely used in gas absorption, gas scrubbing, liquid extraction and other processes.
(3) Metal packing can be made of a variety of materials, and corrosion issues are mainly considered when selecting. Carbon steel fillers are low in cost and have good surface wetting properties. They should be given priority for non-corrosive or low-corrosive systems. Stainless steel fillers have strong corrosion resistance and are generally resistant to corrosion from common systems except Cl–, but they are The cost is high, and the surface wetting performance is poor. In some special occasions (such as the vacuum distillation process under extremely low spray density), its surface needs to be treated to achieve good results; titanium, Fillers made of special alloy steel and other materials are very expensive and are generally only used in certain highly corrosive systems.
Generally speaking, metal tower packing can be made into thin-walled structures, which have large flux, small gas resistance, and high impact resistance. They can be used under high temperature, high pressure, and high impact strength, and have a wide range of applications.
Keyword: inert ceramic ball
According to Le Parisien, PSG’s Italian midfield maestro Marco Verratti is set to earn a wage rise following heavy interest from Real Madrid this summer.
Verratti’s contract currently runs until 2019 and an extension as such is not expected to come out of these fresh talks between PSG and the player’s agent regarding his contract.
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Located in Changzhou, Jiangsu, CZSH (Changzhou Shihui Transmission Parts Co., Ltd.) is engaged in the production and processing enterprise engaged in stainless steel casting and machining. We specialize in manufacturing various types of stainless steel, alloy steel, carbon steel, and aluminum copper alloy castings with an annual output of over 300 tons.
CZSH main products include:
Stainless steel linear bearings, stainless steel outer spherical bearing blocks, engineering plastic bearing blocks, zinc alloy bearing blocks, punch bearing blocks, cast iron bearing blocks, and various types of stainless steel castings.
CZSH products are strictly implemented in accordance with the GB/T9001-2000 ISO9001:2000 international quality management system from design, production to sales, and the product quality has been strictly managed and controlled.
CZSH also provides various high machining services, equipped with complete CNC lathes and other processing equipment, and has rapid design, development, and production capabilities in small batches and multiple types of mechanical components.
In this new year 2024, CZSH will serve you with larger factory production, better quality management and excellent serivces. Welcome to receive orders from all new and old customers!
Changzhou Shihui Transmission Parts Co., Ltd
Tel:+86 519-85853682
Fax:+86 519-85853682
E-mail: [email protected]
Website: http://www.czshcd.com/
Address: Group 9, Caoqiao Village, Xueyan Town, Wujin District, Changzhou City
Keyword: slot milling
Sep 04/24
Auto parts manufacturing is a $40 billion industry worldwide. That means there are a lot of materials and production methods to choose from.
Selecting the right ones can mean the difference between superior and subpar performance, durability, and sustainability. It is one of the most important considerations for automakers.
This article provides information on choosing the highest-quality automotive interior materials. It will help you identify ways to get the most out of every component.
One of the main qualities to look for in automotive interior materials is the ability to create diverse shapes, forms, and finishes. This includes a variety of textures, colors, and patterns.
Plastic automotive material suppliers can produce components in almost any color, design, or finish. Injection molding, for instance, lets you make shapes and configurations that are otherwise unachievable.
This is ideal for making shapes that can improve the function of vehicle interiors. It also is useful for making intricate components over and over again in multiple production runs.
Durability is a primary asset of high-quality interior materials. A car is as reliable as the sum of its parts. Weak links can translate to poor performance of interior systems and a shorter lifespan for the vehicle.
Durability also relates directly to safety. Having parts that can hold up well under extreme temperatures or use means improved safety for drivers and passengers alike.
Plastic manufacturing lets you gain superior strength in automotive upholstery materials. It is useful for making panels, dashboards, and almost any interior part.
It also lets you achieve surfaces resistant to scratch, denting, or warping from high temperatures. Everything from basic to luxury car interiors made of plastic will look and hold up well longer.
Fuel efficiency standards have come a long way since they were first instituted in the 1970s. Federal standards now require an average 8 percent increase for passenger vehicles each year through 2035. This translates to an average of 50 miles per gallon average.
That means automakers have a lot of work to do to keep heading in the right direction. While electric vehicles will inevitably continue to play a major role in this, there are other ways of increasing fuel economy.
One is reducing vehicle weight. Plastic components–especially those that can replace metal parts–have contributed to this. Today, about 50 percent of any given vehicle is made of plastic, but those parts account for only 10 percent of the vehicle’s weight.
Plastic parts are extremely lightweight. Using them in interior auto manufacturing can continue to push weights down and fuel efficiency up.
Now that you know what to look for in high-quality automotive interior materials, you can ensure you are optimizing performance, safety, durability, and sustainability. An experienced producer can further advise you on materials and production methods to get the most out of every component.
At Mayco International, we provide Tier 1 components for every phase of interior and exterior automotive systems. We are located in Michigan but have affiliates throughout the world. Please feel free to c contact us today to schedule a free consultation or for assistance selecting automotive interiors.
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Keyword: flange machining
From February 23 to 26, the fourth DME Dongguan International Machine Tool Exhibition was successfully held at Guangdong Modern International Exhibition Center (Dongguan Houjie). EFANT Bearing, with its main products, precision cross roller bearings, YRT turntable bearings, harmonic bearings and customized bearings, made a wonderful appearance. During the exhibition, it attracted many visitors and buyers to visit, exchange and negotiate business!
EFANT Bearing is located in Luoyang, China's bearing manufacturing base. It is an enterprise specializing in the research and development and manufacturing of precision bearings. It focuses on the research and development and manufacturing of precision cross roller bearings and turntable bearings. The processing accuracy is P5, P4 and P2. The various bearings produced are widely used in the automation industry, CNC machine tool industry, robot industry, etc.
About EFANT
Luoyang E-FIND Precision Bearing Manufacturing Co. Ltd., belongs to Henan Front Group with brand EFANT was established in 2004. It is professional in researching and producing high precision cross roller bearings, rotary table bearings, harmonic reducer bearings and non-standard bearings located in Luoyang city, China. Benefits from Luoyangs unique bearing industry foundation, our company has established a complete quality management system and has an excellent technical team. Our main products are RB, RA, CRBH, SX, RU, XU, XSU series crossed cylindrical roller bearings, XR, JXR crossed tapered roller bearings, YRT, YRTS, ZKLDF series rotary table bearings. Many models are bulk on the stock. Diameter range from 20 mm to 2,000 mm. All products are produced by advanced CNC machines and are 100% inspected. The Precision class is P5 P4 and P2. The warranty is 12 months. Our products have high precision, high rigidity, high load capacity, widely used in the industrial robot, machining center, precision rotary table, indexing head, grinding machine, honing machine, aerospace, medical equipment, measuring instruments and IC manufacturing machines, etc fields. With the Create values for customers; Let customers succeed mission, we insist on openness, professionalism, responsibility to provide excellent service. 24 hours 7 days online technical service to help customer bearing choosing and guide the customer on bearing installation and adjustment. Our products were exported to the U.S.A, Sweden, United Kingdom, Russia, Korea, Thailand, Germany, Israel, etc countries and enjoyed a great reputation.
Contact
Company:Luoyang EFANT Precision Bearing Manufacturing Co. Ltd
Address:No.11 Sanxi Road, Jianxi Industrial Park, Luoyang, Henan, China, 471003
Tel:86-379-80887690
https://www.efindbearing.com
Aug 28/21
In 2020, the luxury car market was worth over $400 billion. And analysts project that it will grow 5% annually to a total of $566 billion by 2026.
Volkswagens are high-quality and well-made vehicles, causing many people to wonder: is Volkswagen luxury?
Volkswagens aren’t typically considered luxury vehicles. But the Volkswagen Group does make luxury car brands.
The better question is: why do so many people think this car brand is luxury? We’re analyzing this question below, so keep reading for everything you need to know.
Volkswagen is a German automotive brand. This car brand was founded in 1937 by the Nazi Party and Hitler. Hitler intended the vehicle to be affordable yet fast, calling it “the people’s car.”
The Volkswagen brand has since separated itself from its controversial roots. The first US Volkswagen dealer opened doors in the late 1950s. But the brand didn’t gain traction with consumers until a few years later, in 1960.
Today, Volkswagen is perhaps best known for its Volkswagen Beetle model. It has rebranded as “VW” and become one of the largest automobile manufacturers in the world.
Volkswagen isn’t traditionally considered a luxury vehicle. But why? What exactly makes a luxury car luxury?
“Luxury” isn’t an industry-regulated term. That means there’s no exact definition for what customers and manufacturers consider luxury.
Luxury vehicles also have cutting-edge safety features and higher performance capabilities. They feature upgraded interiors and the latest automotive tech, including:
Not all Volkswagon vehicles come with these features. And that’s why VW isn’t a luxury brand, per se. However, there’s good reason to think that this is a luxury brand, especially when customers buy vehicles with upper trim levels.
The latest VW models to hit roads come with some pretty luxurious features. So luxe, in fact, you might just mistake these affordable cars for premium, high-end vehicles.
For example, consider the Volkswagen Atlas SEL Premium. This sporty SUV comes with a leather interior, heated and cooled seats, and park-assist technology.
The 2021 Volkswagen Tiguan SEL is another SUV with impressive features. It offers exclusive 4MOTION technology and a Digital Cockpit. The car’s heated steering wheel and all-wheel-drive system make this VW even more luxe.
The Volkswagon Group’s VW-branded vehicles may not be considered luxury cars. But the conglomerate does own top-shelf car brands like:
These vehicles can cost customers a pretty penny. That’s why so many people prefer Volkswagens with high trim levels. These cars may not be luxury, but they sure do feel like it.
Volkswagen is a German producer of premium but not luxury cars. Its parent company, Volkswagen Group, does own a long list of luxury vehicle and supercar brands, including Bugatti and Lamborghini.
Are you looking for a partner to help you build luxurious Volkswagens? Mayco International specializes in the development, validation, tooling, and contract manufacturing of VW vehicles. So, Request a quote for our services today!
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In the modern manufacturing industry, CNC machining centers, as a kind of high-efficiency and precise machining equipment, are widely used in the machining of metals, plastics, and many other materials. However, in the actual operation process, many operators may encounter the problem of abnormal spindle speed. This will not only affect the machining quality but also may lead to equipment damage and increase production costs.
Therefore, understanding the causes and solutions of abnormal spindle speed is essential to ensure the normal operation of the equipment. In this paper, we will discuss the problems related to the abnormal spindle speed of CNC machining centers in depth, and discuss in detail the preparatory work, fault investigation, cause analysis, solutions, preventive measures, and other aspects.
Before performing any maintenance or inspection, make sure you have the necessary tools and equipment. This includes:
(1) Multimeter: for measuring voltage, current, and resistance to help diagnose electrical problems.
(2) Lubricant: for checking the condition of the lubrication system and replenishing the lubricant.
(3) Wrenches and screwdrivers: for removing and installing parts.
(4) Paint brushes and cleaners: for cleaning equipment and removing oil and debris.
Before starting the inspection, record the specific manifestations of abnormal spindle speed. This includes:
(1) Frequency and range of speed instability.
(2) Changes in spindle speed under different operating conditions (e.g., idling, cutting).
(3) Any accompanying unusual sounds or vibrations.
Familiarize yourself with the operation manual of the CNC machining center, especially the maintenance requirements and troubleshooting guidelines for the spindle section. This will help you to diagnose and repair problems more effectively.
Ensure that the operator is properly trained in the basic operation, maintenance requirements, and common troubleshooting methods of the equipment. Good operating habits and proper maintenance knowledge can significantly reduce the frequency of failures.
It is vital to conduct a thorough investigation before getting your hands dirty with repairs. Here are a few survey points:
Observe the performance of the machining center in the idle state. Note if there is any instability in the spindle speed, especially at different idle speeds. This will help you make an initial judgment as to whether there is a problem with the equipment itself.
When performing actual machining, especially under high loads and large depths of cut, carefully observe the change in spindle speed. If there is a noticeable loss of speed under these conditions, it may be related to the cutting force or load.
Check the surroundings for factors that may affect the operation of the equipment. For example, unstable supply voltage, excessive temperature, or humidity may cause abnormalities in the equipment. Recording these environmental conditions can help you determine the source of the problem.
Review the equipment’s maintenance records and history of failures to see if the equipment has had similar problems. This can provide important clues to the diagnosis of the current problem.
After the investigation is complete, the cause of the abnormal RPM needs to be analyzed in depth. The following are some common causes:
The signal received by the spindle servo amplifier (inverter) of the CNC machining center may be interfered with during transmission. This interference can come from the external electromagnetic environment, wiring problems inside the machine, or poor connections. This can cause the spindle to receive incorrect speed commands.
Unstable power supply voltage can affect the normal operation of the equipment, especially if the load varies greatly. Voltage fluctuations may cause the servo system to fail to control the spindle speed correctly. Ensuring a stable power supply is an important measure to prevent abnormal speed.
A long or worn synchronous belt that transmits the spindle can lead to slippage. This is especially obvious at high speeds, and slippage will directly affect the spindle speed. Regular inspection and replacement of the synchronous belt is the key to ensuring the stable operation of the spindle.
Damage to the spindle encoder or poor feedback signal may cause the control system to be unable to accurately determine the actual spindle speed. Regularly check the status of the encoder to ensure its normal operation.
Damaged or poorly lubricated bearings supporting the spindle will increase the spindle’s resistance to rotation, resulting in abnormal speed. Maintenance and replacement of the bearings are important to ensure the smooth operation of the spindle.
Poor lubrication of the spindle may also lead to unstable speed. Insufficient or contaminated lubricant will affect the normal operation of the spindle, resulting in increased friction and thus affecting the speed.
Improper parameter setting in the CNC system may also lead to abnormal rotation speed. Check the relevant parameter settings in the CNC system to ensure that they meet the processing requirements.
After analyzing the cause, you can start to gradually troubleshoot and solve the problem. The following are specific steps for troubleshooting:
Use a multimeter to measure the voltage of the CNC machining center. First, make sure that the power supply is turned on properly and check whether the input voltage is within the range specified by the equipment. If the voltage is found to be normal and other machines next to the machine using electricity from the same grid are working properly, the cause of unstable voltage can be ruled out.
Check the amount of lubricating oil in the CNC machining center to ensure that it is within the normal working range. Confirm that the lubrication system is working properly and that there are no oil leaks or open-circuit faults in the oil circuit to rule out lubrication faults. If an oil line blockage or oil pump failure is found, it should be dealt with in time.
When the spindle is running, use a long rod (such as a screwdriver) to lean near the spindle box, with one end leaning on the ear, and listen to the sound of the bearing when it is running. If no abnormal sound is heard, the possibility of bearing failure can be ruled out. If there is noise, the bearing may be damaged or lacking lubrication.
Open the spindle box and check the synchronous belt connection between the spindle motor and the spindle. Press the belt between the two pulleys by hand to confirm its tightness. If the timing belt is found to be worn, it needs to be replaced promptly.
Check the synchronous belt between the spindle and the encoder to make sure it is not worn or slipping. If problems are found, replace the timing belt promptly. At the same time, check the connection line of the encoder to make sure the signal transmission is normal.
Check the signal line from the encoder to the servo amplifier to make sure there is no external interference. If there is a problem with the signal line, it may need to be rewired or shielded.
Table 1 Troubleshooting Steps for CNC Machining Center Spindle Failures
After completing the troubleshooting, take appropriate solutions according to the problems found:
If the timing belt is found to be worn, it needs to be replaced with a new one. Select a high-quality timing belt that matches the equipment to ensure its stability during operation.
If the bearings are faulty, repair or replace them in time to ensure smooth rotation of the spindle. Use reliable bearings to avoid the recurrence of failure.
If there is a problem with the lubrication system, clean the system and replace the lubricant to ensure good lubrication to reduce friction. It is recommended to use a high-quality lubricant suitable for the requirements of the equipment.
If the power supply voltage is unstable, consider installing a voltage regulator or UPS system to ensure the normal operation of the equipment. Make sure the power supply line is good to avoid failure caused by power supply problems.
Check the parameter settings in the CNC system to ensure that they meet the processing requirements. If necessary, carry out software upgrades or resets to solve software problems.
Table 2 CNC machining center spindle speed abnormal solution
To avoid the recurrence of the problem of abnormal spindle speed in the CNC machining center, the following preventive measures are recommended:
Develop and follow a regular maintenance schedule to regularly check the condition of key components such as lubricants, synchronous belts, and bearings. It is recommended to conduct a comprehensive inspection once a month to ensure that the equipment is in good condition.
Ensure that the power supply is stable and use a voltage regulator if necessary to ensure the normal operation of the equipment. Check the power lines to make sure there is no looseness or aging.
Provide relevant training to the operators to improve their ability to recognize and handle equipment faults, find problems, and handle them in time. Organize regular technical training to ensure that the operators have the latest maintenance knowledge.
Consider installing a monitoring system to monitor the operating status of the spindle in real-time, so that potential problems can be identified and solved promptly. Through data recording and analysis, early warning can be given to prevent problems from expanding.
Ensure that the site environment is neat, and regularly clean up debris around the equipment to avoid interference with the equipment. Develop a site management system to ensure that the equipment operates in a good environment.
Table 3 CNC machining center spindle speed abnormal preventive measures
Abnormal spindle speed of CNC machining centers is a common problem, but through systematic troubleshooting and analysis, a suitable solution can be found. Maintenance and management are the keys to preventing the problem from occurring, through regular inspection and timely processing, it can effectively extend the service life of the equipment and improve processing efficiency.
I hope that the sharing of this article can help the majority of operators in the use of CNC machining centers to ensure smooth production. In the future, with the continuous progress and development of technology, we have reason to believe that the CNC machining centers will be more intelligent, and the failure rate will be reduced, thus bringing greater development opportunities for the manufacturing industry.