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Pakistan (All cities)
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 (All cities)
Fridge/AC Compressor Scraps at a very competitive market price. Specifications : Compressor Weight : 2kg, 4kg, 6kg, 8kg, 10kg, and 12kg 14kg More Details : 220-240 v 50 or 60 hz.Cooling capacity : 90-190 w Size : 5.99 -12.53 cm3 Purity : 99.98% copper inside with connection box for more details contact us via email at baicuscrapmetalltd@gmail.com or whatsapp +447918 245841
Rs 120,0
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Pakistan (All cities)
Overview: Mold powder is mainly used in the continuous casting and steelmaking process, evenly sprinkled on the molten steel surface in the mold to lubricate, keep warm, prevent oxidation and absorb non-metallic inclusions. Mold powder is an indispensable auxiliary production material in the production process. In the process of evenly distributing the mold powder to the molten steel surface of the mold, the amount of mold powder should be controlled, and the thickness of the mold powder should be within a certain range. If the coverage thickness of the mold flux is too thin, it will cause no heat preservation, oxidation of molten steel, inclusions, cracks, large drawing resistance, steel leakage, etc. At the same time, the coverage thickness of mold flux should not be too thick, they can’t melt in time with too much mold powder, if the molten steel is churning, it is easy to get the mold powder into molten steel at this time, resulting in mold leakage. Therefore, the amount of mold powder must be controlled within a reasonable range. The detection and control of mold flux thickness is very important, especially for the steel plants which are strict with the steelmaking production process. The detection principle: The mold flux detection system developed by Wuhan CenterRise M&C Engineering CO., Ltd. uses the laser triangular sensor fixedly installed above the mold to obtain the height h1 by scanning the upper surface layer of mold flux with high-precision laser triangulation. When the laser measuring head is placed each time, the height h3 of the upper nozzle of the mold will be marked, and the system through the PLC system which is connected to the continuous casting machine through the network to introduce the height h1 of the mold liquid level. Through the calculation of three heights, we can get the thickness of mold powder H = 900-h1-(h3-h2)mm (900mm is the depth of mold). The features: The system adopts a high-precision laser triangulation distance meter, which can measure the thickness of the mold flux with high speed and high precision, and the accuracy can reach 1mm. The equipment is easy to install and use. When we are using, the laser rangefinding sensor can be placed directly above the mold without affecting production. The system can be interlocked with the automatic mold powder feeding system to automatically adjust the amount of mold powder, so as to automatically control the amount of mold powder within a reasonable range and realize intelligent automatic mold powder feeding. Non-contact measurement, the system only needs ventilation protection, simple and stable to use. The parameters: Measurement range:0-50mm Temperature measurement range: -20℃-700℃ Equipment installation distance:750mm System measurement accuracy:1mm Laser measurement accuracy: 0.1mm Frequency: 700-2000Hz Cooling method: air-cooled purging Installation method: rail sliding installation, can be slid out during maintenance Storage period: data can be stored for more than 2 years Communication method: Industrial Ethernet or Profibus-DP
Rs 200.000,0
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2 photos

Pakistan (All cities)
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Rs 75.950,0
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4 photos

Muzaffarabad (Azad Kashmir)
Brand New Unbox Sony PlayStation 5 1TB Comes with 2 Wireless Controllers & 5 Games All included in the box
Rs 0,0
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Pakistan
I have available 2 stunning BSH blue kittens. 1 girls and 1 boys. Mum and dad are beautiful blues and are GCCF registered. Mum has a wonderful personality, she is friendly and extremely loving. she has an excellent 4 generations pedigree.
Rs 5.000,0
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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
Stunning Tri-Colour Pedigree Puppies for Sale. Only 3 girls left. Born 8th January and ready to re-home 4th March. These puppies have been home bred and reared within a family home. Mother can be seen with puppies and is from Chantryland an....Beautiful litter of chunky beagle puppies. Lemon and white & Tri in colour. Boys and girls available. They have gorgeous long floppy ears and cheeky personalities. They are ready now for there forever loving homes. Mum is a tri colo....We have for sale 4 wonderful beagle puppies they r good with kids other pets they r all up to date with wormed & flees & vacation they also comes with a dog lead good home only
Rs 200,0
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Pakistan
Top class litter of kc reg Akitas pups. Puppies have a fantastic blood lines and already chunky for their age.The pups have been flead and wormed up to date and are now on solid food. Puppies will be ready to leave for there loving homes
Rs 10.000,0
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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!
Rs 0,0
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Lahore (Punjab)
8 Months Training program covering Basic Positioning, Music Theory & Fundamentals, Music Language/Notations/Sheet Music Reading & Playing, identification of pitch and different Rhythm Patterns.
Rs 10.000,0
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Rawalpindi (Punjab)
Programmers Lab Training Institute is the best IT training institute for computer short courses in Rawalpindi Islamabad . Our mission is to empower every student with IT skills and knowledge. With a wide array of job oriented computer short courses, we ensure that our students are prepared to succeed in their careers. Our computer short courses include Website Designing Course In Rawalpindi, React-Native course,SEO course, Graphics Designing course, FUll Stack Web Development Course In Rawalpindi Social Media Marketing course, Digital Marketing course, Php course, Sql, Video Editing course, Content Writing course, Basic IT, course ,MS Office Course, and many more short courses.
Rs 0,0
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Pakistan (All cities)
Manufacturer's Warranty. Tecno Industries (Reg) اَلحَمْدُ لِله Manufacturers of: SERVO MOTOR controlled, Automatic Voltage Stabilizers & Regulators. (pure copper) Since 1986 Tecno Lazer Pakistan. 0300-9433728 Ring Road, Band Road, Lahore Pakistan. A Servo Stabilizer That Decreases 30 Volts (back-from 250 to 220 & Increases 70 Volts from 150 to 220) (±) 1% {CAN STEP-UP from even low (on-demand)} اَلحَمْدُ لِله Runs your Equipment Even in Low Main Voltage. INFORMATION: 1: ( An Old Transformer / Relay carrying Stabilizer steps down or up after losing or gaining 20-25 Volts While A Servo Stabilizer steps down or up after losing or gaining 1 Volt. (±) 1%) 2: (on-demand) Buck-Boost Transformer Technology add-in 2kVA and above Models. Basically they work on DC Servo Motor Control system. Their efficiency is much better and its output voltage of either 110 or 220 AC or any required voltage, more-over TECNO 3Phase models up-to 500kVA ratings are manufactured against a confirmed order. 1 year warranty with parts. 100% genuine copper winding (GUARANTEED) Specs for (intelligent Voltage Stabilizer): SERVO MOTOR controlled, Automatic Voltage Stabilizers & Regulators. Input Voltage : 150 To 250 AC Output Voltage : 110v & 220v AC (±) 1% Frequency : 45 or 60 Hz Wave Form : Non-distorted Sine-wave Response Time : 25ms / V Efficiency : 95 % Power Factor : 0.95 Relative Humidity : 30% to 80% (without condensation) Temperature Rise : Less Then 50c Control System : DC. Servo Motor Insulation Resistance : More then 3M?? at 500V DC Tested : 1500 V We Manufacture Servo Motor Controlled Automatic Voltage Stabilizer, using Japanese technology, for UPS, Solar, AC Air-Conditioner, Split-Type, Window Type, (LCD/LED TV) Washing Machine, Treadmill, Photocopier Machine. Television, Music System, Refrigerators, Ultra sound Machines, Embroidery Machines, All Sensitive Equipment, Signalling Devices, CNC Machines, Air Conditioning Plants, Telecommunication Networks, Motor Loads, Data Processing Equipment, Bio Medical Equipment, Drives, PLC’s, Induction Heating, Hotels, Defence Application, Industrial Units, Lighting Loads, Residential/ Offices, Farm Houses, R & D Institutions, Mainline Stabilizers, Sophisticated Laboratory Equipment etc. Runs your Appliances Even in Low Main Voltage. وولٹیج سٹیبلائزر Standard Power Ratings Available in Single-Phase & 3-Phase: 500VA, 1kVA, 2kVA, 3kVA, 5kVA, 10kVA, 30kVA. Up-to 500kVA Punjab NWFP, KPK, & All Pakistan Cargo, Feel Free to Call: Rana Naeem Hammad. M.D. Tecno Industries (Pvt) Ltd Lahore. +923009433728
Rs 121,0
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Askoley (Northern Areas)
Buy Verified Cash App Accounts https://buy5stareviewer.com/product/buy-verified-cash-app-accounts/ As it acquires clients, verified accounts become essential for businesses and individuals to fully access its features. A verified Cash App account allows you to send, receive, and withdraw substantial amounts of money, making it ideal for entrepreneurs, freelancers, and investors. The verification process ensures that the account is legitimate, reducing the risk of fraud and providing peace of mind for users. Verified Cash App accounts offer several advantages. Firstly, they enable higher transaction limits, allowing users to manage larger sums of money. This is particularly beneficial for businesses that need to process significant payments. Secondly, verified accounts provide enhanced security features, such as two-factor authentication, which helps protect against unauthorized access. Lastly, having a verified account can improve your credibility and trustworthiness when dealing with clients or customers. When purchasing a verified Cash App account, it is crucial to choose a reputable source. Look for sellers who offer guarantees of authenticity and provide excellent customer service. Conduct thorough research and read reviews to ensure you are making a safe and reliable purchase. Contact Info:: Telegram:@BBuy5stareviewer WhatsApp :+1(470) 745-6499 Skype :Buy5stareviewer live:.cid.e4c6455dd0c7f99e Email:buy5stareviewer@gmail.com
Rs 250,0
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Pakistan (All cities)
The Veritable Calfskin store bring another Superstar Outfit Fur B-26 Shearling Aircraft Cowhide Coat. This Coat has been made by genuine quality Calfskin and has jazzy Fur Straight Style Collar https://aajacketmaker.com/product/b-26-shearling-fur-jacket/
Rs 70.000,0
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