News

The fixed and rotor iron cores of large motors are divided into many overlapping segments. The punch plate of spot welded ventilation channel steel is placed between the iron core segments, namely, the ventilation groove plate, so as to form the radial air duct of fixed and rotor iron cores, which is used for heat dissipation and ventilation cooling of iron cores. The manufacturing quality of the ventilation groove plate must meet the strength requirements to ensure that no collapse or collapse occurs after loading. At the same time, the spot welding position of the ventilation channel steel on the punching plate should be accurate. After each section of iron core is pressed, the axial position of the ventilation channel steel should be in a straight line to ensure that the radial air duct does not distort and the axial straight line transmission of the pressing force of the iron core. With the development of motor manufacturing technology and upgrading of manufacturing equipment, the manufacturing technology level of ventilation groove plate has been greatly improved. Currently supported processes are resistance welding and laser welding. Resistance welding is to place the welding parts between two electrodes, connect the current and apply a certain pressure, use the resistance heat generated when the current flows through the workpiece contact surface for heating, forming the local melting state of the welding parts. Laser welding is a kind of laser beam with high monochrome, strong aroma and high brightness by using the principle of excited atomic radiation. The laser beam, which is composed of coherent monochromatic photon stream with high energy density produced by laser, is used as energy source to bombard metal or non-metal, generate heat and melt it to achieve the purpose of welding. According to the different requirements of the structure design and the characteristics of the respective spot welding process and the actual production needs, the motor manufacturers can according to their own design capacity, equipment situation, production cycle, choose suitable for their own ventilation groove plate spot welding process, to ensure the manufacturing quality of ventilation groove plate.

Single Notching The single groove blanking process of motor blanking is a kind of blanking process relative to double blanking. Motor fixed, rotor core punching using single groove punching process, its mold design, manufacturing are relatively simple, suitable for small batch, variety of production, has the characteristics of low cost, fast change. With the development of advanced punching machine, production efficiency continues to improve, the single punching process is also developing rapidly. For the large motor, because of the cost of the duplex die and the equipment capacity, the single groove is also used. Another advantage of single groove punching is the consistency of groove size. Compound die is the same punch, stator or rotor groove completed at one time. How many slots correspond to the same number of punches, punch size to achieve complete has always been some difficulties: single slot punching is by the same punch to complete all the slots, groove consistency is better.

Dear customers and partners: Since Mar. 17, 2023, "Henan Yongrong Power Technology Co., Ltd" has been renamed to "Henan Yongrong Power Co., Ltd". The relevant matters are hereby announced as follows: From now on, "Henan Yongrong Power Technology Co., Ltd will cease to be used, and all internal and external documents, materials, invoices, and tax number of the company will use the new name "Henan Yongrong Power Co., Ltd". After renaming the company, the business entity and legal relationship, business scope remain the same, and all business, business behaviors, contractual relationships, rights and obligations of "Henan Yongrong Power Technology Co., Ltd" are inherited by "Henan Yongrong Power Co., Ltd". The legal representative, credit code, tax identification number account bank, address and telephone number of the company remain the same. We sincerely thank you for your long-term care and support, and we will continue to provide you with quality service. Best Regards, Henan Yongrong Power Co., Ltd.

Laminations are the steel portions of the stator and rotor consisting of thin lamination sheets stacked together. These laminations can be stacked "loose", welded, or bonded together depending on your application. Laminations sheets are used instead of a solid pice to reduce eddy current losses and Cools the Stator Core. Reduces Eddy Current The electromagnetic field of a stator core generates a voltage, called an eddy current. Often this current results in power loss and diminished performance. How much loss depends on several factors including frequency of EMF and density of magnetic flux. Stator laminations reduce eddy current by insulating the core. Thin silicon steel plates are stacked on top of one another around the center, preventing eddy current flow. With the eddy current reduced, the stator core can maintain constant power, keeping your motor running. Cools the Stator Core Heat often follows eddy current production. A solid piece of iron would not only emit large eddy currents, but the core would be hotter than Florida in the summertime. That amount of heat is enough to melt the core entirely. By laminating the stator, you reduce the eddy current and the heat it generates. Cooling the core simplifies down to pumping air or hydrogen across the core structure. Reduces Hysteresis Loss The electromagnetic field created by the rotating stator magnetizes the iron core. However, these effects don`t happen at the same time. The magnetization lags behind the field creation, a phenomenon known as hysterisis. When you eliminate the magnetic field (i.e., shut the engine off), the iron will slowly demagnetize. Toggling back and forth between magnetization and demagnetization creates a loop. The bigger the loop, the more energy it takes to magnetize and demagnetize the core. What does all this science have to do with stator laminations? Well, when the core generates heat, it loses hysteresis. This loss wastes energy and forces the motor to consume more power to function. Lamination plates have narrow hysteresis loops, requiring less energy to magnetize and demagnetize the core. In layman`s terms, laminating the stators makes the motor more efficient.

If gone for the configuration of any electrical machine , the stator acts like a field to the machine and also it create motion with the armature winding. And most of all it is the stationary parts of the Machine. It is the stationary part of a rotary system, found in electric generators, electric motors, sirens, or biological rotors. The main use of it is to keep the field aligned. It is opposite to the rotor or armature and where the field windings are in a motor or generator.

The high-voltage motor is mainly composed of two parts: the fixed part is called the stator, and the rotating part is called the rotor. Another end cover, fan, cover, motor frame, junction box and so on. The role of the stator is to generate a magnetic field and act as a mechanical support for the high-voltage motor. The stator of the motor consists of three parts: the stator iron core, the stator winding and the frame. The stator winding is embedded in the stator iron core, and the electric energy is converted by the current generated when the electromotive force is induced. The main function of the frame is to fix and support the stator core. When the high-voltage motor is running, the internal heat is dissipated to the frame through the iron core, and then dissipated from the surface of the frame to the surrounding air. Typically, high-voltage motors are designed as cooling plates on the base. The rotor of a high-voltage motor consists of a rotor core, a rotor winding and a shaft. The rotor core is also part of the magnetic circuit of the motor. The role of the rotor winding is to generate induced electromotive force and electromagnetic torque through the current. The shaft is the main component that supports the weight of the rotor, transmits torque, and outputs mechanical power.

Postponement Announcement of 2022 CWIEME Shanghai Dear Visitors & Exhibitors, We are sorry to inform you that tightened Covid-19 restrictions recently implemented in China would strongly impact CWIEME Shanghai 2022, so we have taken the decision to postpone. Bringing people together is at the heart of what we do at CWIEME. We have worked very closely with the venue and industry bodies to find a new, suitable date that will allow our community to meet in person again in a safe and secure environment. I am delighted to confirm that CWIEME Shanghai will now take place 28-30 June 2023 at Shanghai World Expo Exhibition & Convention Centre. If you are exhibitors, there is no further action for you to take concerning your booking, it will automatically be transferred across to the new dates, as will any orders you have placed with official contractors. Meanwhile, we will also apply the original floor plan as the original dates, meaning that stand changes as a result of the date will be minimal. If you are registered visitors, there is no need for you to do anything. Your free ticket will be rolled forward to the new show date, and we will send you an email with your new e-badge closer to the event. Holding CWIEME Shanghai is a great opportunity for people to come together to learn, trade and network and to look positively to the future of electrical engineering, we believe that CWIEME Shanghai 2023 will even better than before. I wanted to take this opportunity to say thank you for your continued support and understanding. Kind regards, Nick Davison Portfolio Director - CWIEME Global 2022 CWIEME (qq.com)

When should you seek repair or restack? As time passes, the stator core`s performance will slowly deteriorate. Once you spot signs such as oilcontamination or loose bars and wedges in your equipment such as generator-you should get a professionalengineer to do generator overhauling-either doing a repair or restacking the stator core`s lamination.Moreover, doing a repair does not only solve any existing issues with the stator core but also boosts the overalefficiency of your equipment. The key to ensuring maximum efficiency for your equipment at all times is by understanding how your equipment-be it transformer, electric motor or generator-works.In this case,the stator core is a crucial component-that if not looked after properly-will result in a complete malfunction of your equipment. So.know how stator core lamination goes about; you will understand your equipment better and know when itstime to do generator maintenance.

Why is the stator core laminated? In a case scenario where the stator core is made from solely one solid piece of material-the associated heatproduced and currents will amount to a large sum-resulting in a melted stator core. As such, there is a need to laminate the stator core and insulate each laver.Reason being that the circulatingcurrents will be brought down to a size that is much more smaller and controllable. Hence. allowing the heatgenerated by the currents to be managed by pumping cooling gases(hydrogen or air)through and/or acrossthe stator core structure. Above all this makes sure that the stator core`s performance is not compromised or even driven to the nointof terminal malfunction.

Due to the Covid-19 pandemic outbreak in China, 2022 CWIEME Shanghai has been postponed to 27-29 September 2022. Holding CWIEME Shanghai at the end of September in Hangzhou is a great opportunity for people to come together to learn, trade and network and to look positively to the future of electrical engineering. More than 600 exhibitors present themselves at the CWIEME and show their products and services in the field of coil winding. We will keep to focus on our products and service and delivery our value to our customers.

A typical stator core is made up of countless individual steellaminations-from thousands up to even hundreds of thousands. As of now, laminations are created by computer-controlled laser cutting machines or stamping/punching dies The process of building a stator core goes like this:laminations are continuously placed side-by-side with the objective to attain a ringed or complete circular layer. As such the following layer will continue being laid out - offsetting each laver like a cinder block wall or brick until the desired length and laver is achieved. Generally, astator core will be estimated to be about 0.014"to 0.018"for each layer-while the length can range from ten to twenty feet. Al these segments/lavers are alligned properly and fastened together under compressive loads with parts llke finger plates, building bolts, key bars,through bolts and compression rings.

The global coil winding, transformer, electric motor, generatorand e-mobility supply chain in one place. Yongrong Power as a professional manufacturer of stator rotor lamination and core. We will join the CWIEME Berlin 2022 on May 10th-12th. Welcome to visit us at Hall3.2, Booth C14.

CWIEME SHANGHAI is Asia-Pacific`s professional event dedicated to Coil Winding, Electric Motor and Transformer Manufacturing Exhibition. Yongrong Power as the leading manufacturer of motor lamination, we exhibited our best quality to visitors and received many of their cooperation intention. We will keep to focus on our products and service and delivery our value to our customers.

CWIEME SHANGHAI is Asia-Pacific`s professional event dedicated to Coil Winding, Electric Motor and Transformer Manufacturing Exhibition.Yongrong Power as the leading manufacturer of motor lamination,we exhibited our best quality to visitors and received many of their cooperation intention. We will continue to focus on our products and services and deliver our value to our customers.