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Overview The automatic control for the molten steel level of the mold is one of the key technologies of continuous casting production. It is very important to reduce the labor intensity of workers, improve production efficiency, improve the quality and output of casting billet, reduce overflow and breakout of steel and improve the management level of steelmaking and continuous casting. The molten steel is poured into the mold. In order to prevent overflow, the molten steel level must be kept stable. Otherwise, during the casting process, if the level will fluctuate too much, and slag will be involved, forming surface slag inclusion on the surface of the casting billet, affecting the quality of the billet. The test points out that the relationship between the level fluctuation and the depth of casting billet surface slag inclusion is as follows: The experience has shown that surface slag inclusions can be eliminated when the level fluctuation is within ±10mm. At the same time, if the level fluctuation is more than 10mm, the rate of longitudinal cracks on the casting billet surface is 30%. It means that the level fluctuation directly affects the surface quality of the casting billet. The principle of the system The eddy current type molten steel level gauge is the key to the system. The system operates reliably and has excellent performance: high temperature resistance, strong anti-interference ability, fast dynamic response (lag time 0.10s), high detection accuracy (±05mm), and large measurement range (0-150mm). The selected electromagnetic field frequency ensures that the level detection probe only detects the level change of the mold and does not detect the mold flux or steel slag layer. The system has the advantages of simple operation and no radiation protection problems. The system is insensitive to argon blowing, and its sensors can be mounted on the tundish car or on the platform. The sensor is cooled by compressed air during use. The principle is shown in the figure A high-frequency exciting winding is installed above the molten steel surface of the mold. The high-frequency magnetic field generated by the high-frequency exciting winding induces eddy currents on the molten steel surface to form a magnetic field. The magnetic field generated by the induced eddy current is in the opposite direction to the magnetic field generated by the high-frequency exciting winding, which changes the impedance of the high-frequency exciting winding. Under the condition that the winding material and structure, steel grade, temperature remain unchanged, the coil impedance change only has a single-value function relationship with the height of the molten steel level. As long as the impedance change of the high-frequency winding is detected, the change of the molten steel level in the mold can be converted. The components of the system Continuous casting mold level automatic control system is composed of eddy current tyoe molten steel level gauge, controller and digital actuator for adjusting the opening of tundish stopper. The detection end of the mold level automatic control system is ① eddy current displacement sensor, which uses the eddy current mutual inductance effect between the energized coil and the metal conductor to detect the distance. The effective signal of the eddy current sensor is amplified and linearized by the circuit of ② mold level gauge, which converts the 0-150mm change in the molten steel level of the mold into a standard signal of 4-20mA.DC, and then transmits it to the ③ control computer to complete data processing and system control functions. We can also control the actuator manually and automatically through the ④on-site operation display control panel, and the opening of the stopper is controlled by the ⑤ actuator to realize the automatic control of the molten steel level. 1 Eddy current sensor; 2 mold level gauge; 3 control computer; 4 On-site operation display control panel; 5 digital actuator; The control principle of the system The system can be set to four control modes: automatic, semi-automatic, manual and motor clutch. The automatic mode is the closed-loop control system of the molten steel level, and control the opening of the stopper by the digital actuator; the semi-automatic mode uses opening degree setter and digital actuator to set the opening of the stopper manually; the manual mode is to open and close the button directly to control the opening of the stopper; the motor clutch mode is quickly changed from any of the above control methods to manual stopper operation. The functions of the system also include: display and record of molten steel level, nozzle opening and casting speed; setting of molten steel level and nozzle opening; alarm of molten steel level at limit value etc. In addition to taking the detection of molten steel level as the main feedback signal of the control system, the control system also considers various interference factors that have an impact on the level control. These interference factors include: 1. The influence of the change of the flow characteristics on the control system after the melt loss of the stopper 2. The influence of the weight change of molten steel in the tundish on the control system 3. The influence of the change of the casting speed of the continuous casting machine on the control system 4. The influence of the mold width change (the mold width is adjustable) on the control system 5. The influence of the vibration frequency and amplitude of the mold on the molten steel level gauge The function and software implementation In order to overcome these disturbances, the mold level control strategy adopts PID control. And on the basis of PID control, self-adaptive correction and feedforward control are introduced to form an advanced control system. The level control is the main loop, and there is a proportional gain of the main loop controller. According to the self-adaptive correction of the mold width change and feedforward compensation of casting speed, so as to further reduce and eliminate liquid level fluctuations caused by mold width adjustment and casting speed changes. In order to reduce the frequent action of the stopper, the system adopts the intergarting time change of the controller, and automatically selects a longer intergarting time when the molten steel level fluctuates lightly. And the system will choose a shorter intergrating time when molten steel level fluctuates greatly. Thereby, the fluctuation of the controlled object caused by the frequent action of the stopper rod is suppressed. In the signal processing of molten steel level gauge, an appropriate filtering link is added and the vibration frequency synchronous filter is used for filtering processing, which can overcome the interference of mold vibration frequency and amplitude variation.
Rs 200.000,0
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Pakistan
After a small size Male tri colour beagle smaller than standard size,ideally pocket size or small legged. Must be K.C Registered and come with papers.Ideally Adult or 8months and over.Cash waiting can travel.,
Rs 200,0
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Pakistan (All cities)
Overview Mold is the casting billet forming equipment in continuous steel casting, and it is also the core equipment and key technology of continuous casting machine. Its function is to forcibly cool the high-temperature molten steel continuously injected into its inner cavity through the water-cooled copper plate to export its heat and to gradually solidify it into a casting billet with the required cross-sectional shape and billet shell thickness. And the casting billet, which is still in liquid state, is continuously pulled out from the lower nozzle of the mold to create conditions for casting billet to be completely solidified in the subsequent secondary cooling area. The main function of the mould oscillation device is to make the mould perform mechanical movement according to the given characteristics of amplitude, frequency and waveform deflection. The purpose is to facilitate demoulding and prevent the occurrence of sticking and breakout accidents due to the bonding of the casting billet with the copper wall of the mold during the solidification process. MOC-K100 mould oscillation online monitoring system can three-dimensionally detect the positive and negative frequencies and waveform characteristics of the mould oscillation. The online changing data is provided in real time, which provides convenient and effective detection methods for on-site inspection personnel. The meaning of the system 1. When the continuous casting machine is not working properly, the billet quality problems (such as unstable oscillation marks, edge cracks, etc.) occur. According to the monitoring results of the system, we can combine with the actual on- site situation to analyze the cause of the failure, and efficiently evaluate and solve the problem of the oscillation table to improve product quality. 2. During the normal operation of the equipment, with the fatigue and wear of the mechanical structure of the mold, the expected oscillation parameters of the mold and the actual oscillation parameters will have a oscillation difference with time change, resulting in the internal process parameters’ changing of the continuous casting machine. Timely and accurate monitoring of changes in these parameters is helpful to schedule maintenance. 3. Transfer equipment maintenance from regular maintenance to state maintenance, do not repair when there is no problem, and arrange maintenance according to production needs when abnormal signs appear. Prevent over-repair and under-repair. 4. According to the monitoring results of the equipment, the on-site working parameters are adjusted in time to avoid adopting inaccurate or large-error oscillation to work and prevent the "breakout" accident. 5. We can timely find out that the oscillation is not stable or out of control in a small range, so as to avoid the formation of unevenness and unstable oscillation marks on the surface of the slab during the solidification of molten steel into the slab, and improve the surface quality of the product. 6. Adjust the working parameters reasonably according to the monitoring results, avoiding the use of excessive safety factor, making the entire assembly line play a normal working efficiency, increasing the output of billets, and create favorable conditions for increasing the casting speed. The functions of the system (1) Overview of monitoring parameters: Provides an overview of real-time monitoring parameters in the full screen, displaying all real-time data including oscillation parameters and process parameters. (2) Time domain waveform: This function mainly displays the oscillation waveforms of multiple measuring points and one channel standard waveform in real time, and simultaneously displays the three elements of oscillation of each measuring point in real time. (3) Waveform superposition: The difference between this function and the time domain waveform is that the waveforms of multiple measuring points are superimposed on a graph with lines of different colors on the same scale, and the oscillation difference of each channel can be calculated and displayed intuitively. (4) FFT: This functional module completes the calculation and display of the oscillation spectrum in real time. It is used to evaluate the waveform distortion of the entire oscillation table and to determine whether there is a problem with the installation of the oscillation device. (5) Bar graph: The oscillation of each measuring point is indicated by a bar graph of peak value and sensor gap voltage, which is more intuitive. (6) Trend: After starting this module, the operator can search the historical records in the database, analyze the changing trend of each parameter, and use it to analyze the rationality of the steel quality and processing parameter settings for different steels under the oscillation conditions. The parameters of the system 1. Number of measurement channels: According to the mold design, up to 16 sensors can be arranged 2. Sensor: three-dimensional oscillation sensing (X, Y, Z three axes) 3. Sensitivity: 1000mV/g 4. Frequency range: 0.04~10HZ 5. Frequency accuracy: ±0.01 Hz 6. Amplitude accuracy: 0.005mm 7. Transmission mode: wired digital transmission, wireless transmission 8. Host: 3U standard rack, handheld device 9. Sensor power supply: 24V.DC 10. Host power supply: 220V.AC/50Hz Mold oscillation curve The structure of the system The main components of the continuous casting mould online oscillation detection system are: 1. Three-dimensional oscillation measurement sensor 2. Handheld oscillation sensor calibrator 3. Dedicated signal connection cable 4. Preamplifier 5. Operation processing unit 6. Graphic display terminal 7. Industrial Ethernet (TCP/IP) or PROFIBUS-DP communication components 8. Control cabinet
Rs 200.000,0
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Pakistan (All cities)
Welcome to Phonics Playtime with Your Private Tutor! Boost your reading skills and confidence with personalized sessions. Let's embark on a fun phonics adventure together. Why Choose Our Fun Team? Exciting Learning: Dive into phonics with games, stories, and activities. Personal Attention: Get special help from a friendly tutor just for you. Fun Adventures: Explore letters and sounds in cool ways. Join us for exciting phonics activities, games, and stories tailored just for you. Book a demo class for best phonics classes online Call us at +91 9654271931. For more visit: https://ziyyara.com/phonics-online-classes
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Pakistan (All cities)
The mini cute crossbody leather bag is a stylish accessory, perfect for carrying your essentials. Its compact size and versatile design make it ideal for daily use, adding a touch of elegance to any outfit. SIZE INFO Height: 15.5 cm Length: 17.2 cm Width: 5.5
Rs 0,0
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Pakistan
We have 6 kittens that will be available as pets, they will be ready to leave home on 7 April 2016. There are 3 boys and 3 girls. Silver spotted and Brown spotted. Mum is a gorgeous Silver Marbled F6 and Dad is a stunning tarnish free Silver spotted boy. If you are interested in these babies, please contact me as there is always a great demand for these babies from this pairing. They always make fabulous big kittens and this is probably the last time that these two are paired together due to the age of Oliver. Viewings start at 8 weeks of age after their 1st vaccination when we will require a non-refundable deposit to secure your kitten. We can also early neuter your boys before they leave us, this will be chargeable, please ask us about this. Individual photos will be taken in a few weeks when kittens are weaning. Please note that some of the kittens are in the fuzzies so markings will not clear for a few weeks yet: Beige Collar - Cool Brown Boy Blue Collar - Silver Boy Green Collar - Silver Boy Purple Collar - Brown Girl Yellow Collar - Stunning Cool Brown Girl Pink Collar - Silver Girl
Rs 5.000,0
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Pakistan (All cities)
TJWholesale is the importer, wholesaler and manufacturer of high quality gold plated jewellery, artificial jewellery, hair accessories, ladies handbags and men's accessories.
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Pakistan (All cities)
Overview: In the steelmaking production process, the ladle is the key equipment for holding molten steel, secondary refining, and continuous pouring. In a modern steelmaking plant, refractory materials are required for converters, refining, and ladles. In the steelmaking process, ladle is the main equipment for using and consuming refractory materials. Improving the service life of ladles and reducing refractory consumption is the key technology for steelmaking plants to save costs and reduce energy consumption for green production. In order to ensure the orderly operation of the ladle, save the consumption of refractory materials, prolong the service life of the ladle, and ensure the safe operation of the ladle, Wuhan CenterRise M&C Engineering CO. developed and launched the LDT-N200 integrated management system for the ladle. Introduction: LDT-N200 ladle integrated management system integrates LDT-L200 ladle lining thickness gauge, TBP-S300 ladle, tundish baking temperature and leakage monitoring system, RFD -C100 metallurgical electronic positioning system, and also integrates SQL Server database and NeuralWare (American computer software company) neural network software NeuralWorks to realize intelligent and optimized management of ladles. LDT-L200 ladle lining thickness gauge uses a laser area array scanning sensor to accurately measure the real-time thickness of the ladle lining, calculate the lining loss, and predict the service life of the ladle. TBP-S300 ladle, tundish baking temperature and leakage monitoring system uses infrared thermal imaging camera and embedded armor wire system to comprehensively monitor and prevent ladle leakage. RFD-C100 metallurgical electronic positioning system installs RFID electronic tags on all ladles to realize full-time and full-space ladle positioning and tracking. LDT-S200 ladle optimization control and analysis software, based on SQL Server database, B/S network structure, realizes online management of ladles, and adopts BP neural network system to realize intelligent optimization control of ladles. LDT-N200 ladle integrated management system can realize ladle age management based on ladle lining data and neural network algorithm, safety process control of ladle turnover and use, full-time tracking management of steelmaking production and full-space tracking management of ladle use and provide optimal control and management of steelmaking production and ladle maintenance. Comprehensive ladle measurement and monitoring, ladle positioning and management, and data management and optimization enable the LDT-N200 ladle integrated management system to fully realize ladle entire process management, optimize the service life of ladles, and comprehensively reduce the cost of refractory materials. The features: Using a lining thickness gauge to measure the thickness of the ladle lining Using infrared thermal imaging camera/embedded armor wire to realize ladle leakage detection Using RFID/number plate recognition to realize the location management of ladles Ladle age management system based on overall tracking Overall (full-time full-space) ladle management system based on database Provide overall production scheduling data Using neural network to predict ladle service life based on big data Ladle Optimal Scheduling System based on database and ladle service life Increase the service life of ladle by 12%-20% Reduce the use of refractory materials more than 15% Realize orderly management of ladle baking Realize full space and full time domain control Reduce the costs of ladle management and maintenance Improve the efficiency of ladle turnover operation
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Pakistan (All cities)
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Karachi (Sindh)
Mishkat service major market segments in the provinces of Sind and Punjab and our offerings range meets the needs of small and medium size industries, retail logistics. Visit https://www.mishkat.com.pk/
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Pakistan (All cities)
Experience Sound Like Never Before with JR 01 Mini Wireless Earbuds! #### Crystal Clear Audio. Ultimate Comfort. Total Freedom. **Why Choose JR 01 Mini Wireless Earbuds?** - **Superior Sound Quality**: Enjoy rich, high-fidelity audio with deep bass and crisp treble. - **Sleek & Compact Design**: Lightweight and ergonomically designed for a snug fit. - **Long Battery Life**: Up to 8 hours of playtime on a single charge. - **Advanced Connectivity**: Seamless Bluetooth pairing with all your devices. - **Touch Controls**: Effortlessly manage your music and calls with intuitive touch controls. - **Noise Isolation**: Block out background noise and immerse yourself in your favorite tunes. - **Water & Sweat Resistant**: Perfect for workouts, travel, and everyday use. #### Elevate Your Listening Experience Don't miss out on the JR 01 Mini Wireless Earbuds! Whether you're hitting the gym, commuting, or just relaxing at home, these earbuds are your perfect companion. #### Buy Now and Enjoy: - **Exclusive Discount**: Limited-time offer. Get yours now at a special price! - **Fast Shipping**: Receive your earbuds in no time with our expedited delivery options. - **Satisfaction Guaranteed**: Love your earbuds or your money back. #### Click Here to Order Now and Transform Your Listening Experience! Experience the freedom of wireless sound with JR 01 Mini Wireless Earbuds. Get yours today!
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Pakistan (All cities)
GoLogica offers complete online training in data modeling that gives professionals the understanding and skills they need to understand data modeling methods. IT specialists, database developers, business analysts, and data analysts who want to become better in creating and managing data structures may benefit from this course. Basic topics covered in the course include entity-relational diagrams (ERDs), data mapping, normalization strategies, and abstract, logical, and physical data modeling. It also covers database design concepts, demonstrating how to build durable, scalable, and effective data models that correspond with business goals. This course, led by industry experts, gives participants practical knowledge through practical assignments, allowing them to apply what they've learned in actual situations. Whether you're new to data modeling or want to improve your existing skills, GoLogica Data Modeling Online Training provides a solid basis for creating and managing successful data models. Enroll in GoLogica Data Modeling Online Training today to obtain the knowledge you need to boost your career in data management and become a certified Data Modeling expert!
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Pakistan (All cities)
Transforming your home into a luxurious haven is an art that requires the perfect blend of style, elegance, and functionality. In Saudi Arabia, cities like Riyadh and Jeddah are home to some of the most exquisite furniture stores where you can find everything you need to create a space that reflects your taste and sophistication. Explore Jonathan Adler Products One of the top names in luxury home decor, Jonathan Adler, offers a stunning array of products that add a touch of glamor to any room. Whether you’re looking for statement pieces like a Jonathan Adler tray, an iconic chair, or a unique vase, these products are designed to stand out. Each item from Jonathan Adler combines bold designs with modern elegance, making them perfect for any luxury interior. Discover the Finest Furniture Stores in Riyadh and Jeddah Riyadh and Jeddah boast a variety of furniture stores that cater to different tastes and preferences. Whether you're searching for classic pieces or contemporary designs, these cities have it all. In furniture stores in Riyadh, you'll find an extensive collection of high-end chairs, sofas, beds, and more. The variety ensures that every piece you choose complements your home’s interior. Similarly, furniture stores in Jeddah offer a rich selection of luxury furniture, from opulent dining chairs to elegant tables and side tables. These stores provide not just furniture but an experience, offering pieces that are not only functional but also works of art
Rs 15.000,0
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Pakistan (All cities)
The 42 cm 2-blade 3D hologram fan in Delhi is a modern visual display, designed to capture high-quality holographic images for the audience This fan is a work of compact length cm 42. The holographic effect was equipped with two prominent lines which are crucial for development. Thanks to the age of the best LEDs, this hologram fan can challenge bright 3D images and movies that seem to float in the air, creating an immersive thrill that’s as exciting as it might be product advertisements, logos, animations, or communication displays are The fan is best to enjoy retail stores, trade shows, exhibitions and many other opportunities around The use of fan software programs or apps can be simple and customizable, allowing users to remotely manage content and customize their displays to specific requirements In addition, it’s lightning-green and sustainable, ensuring longevity and cost-effectiveness. https://avaniindustries3d-led-fans.in/42-cm-2-blades-3D-Hologram-Fan-Delhi
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Pakistan (All cities)
We have the Outboard Boat Engine OXE. Yamaha We are specialized in the sales of full metal scrap/ recycling material such as ac/fridge compressor , Ceramic Cpu Gold Processor Scraps , H.M.S 1&2, Copper wire scrap,Drained Battery Lead scrap in the UK (LONDON).We have all our product fully ready for sales in good quantity and quality also to be shipped out for our buyers.For Booking : https://wa.link/og0sgp Whatsapp: +15806151130
Rs 150.000,0
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