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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)
Overview: LGK-S107 analog heat source instrument (heating tool) is independently developed and designed by Wuhan CenterRise M&C CO., Ltd. This instrument is a heating and testing equipment used to test the performance of the thermocouples installed in the mold in continuous casting machine. After the installation of the mold breakout prediction thermocouples completed, the analog heat source instrument is used to test these thermocouples before they go online. After the thermocouple is connected to the mold thermocouple detector, the current temperature of each thermocouple point will be displayed. By using our heating device to heat the copper plate point of each thermocouple at a fixed point, the thermocouple will have a synchronous temperature rise and then we can observe the temperature rise curve of the same column of temperature points to see whether the temperature measurement consistency of the column of thermocouples is consistent, so as to judge the overall status of thermocouples installed in the mold. If an abnormal point occurs, it needs to be repaired and replaced, so as to ensure the stable operation of the mold breakout prediction system. The working principle: The heating tool generates high heat by 220v alternating current and the electric heating element. The heat is transmitted to the copper plate of the mold through the copper head to simulate the heat source of molten steel, so that the thermocouples of the mold can sense the temperature change to achieve the purpose of calibrating the temperature measurement system. The composition: Walking trolley mechanism Preloader Pure copper heating contacts PID thermostat High power heating tube high power driver The parameters: Power supply: AC220V 50Hz Total power: 2200W Single point power: 300W Temperature control accuracy: 1°C Temperature control range: 0°C-500°C Common temperature range: 25°C-300°C Heating points: 3 (points can be customized) Heating method: heating tube heating Heating contact material: copper
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Pakistan (All cities)
Overview The WGS-L200 Laser Slab/ Plate Steel Width Measuring System adopts the principle of double laser triangulation reflection to process the online measurement of the steel plate on the roller bed, and combines the high-speed digital signal processing technology and programming software to process the signal correspondingly, and displays the relevant data and measurement curve, so as to realize the accurate control for steelmaking process during the production. The WGS-L200 Laser Slab/Plate Steel Width Measuring System is mainly composed of computing processing software and hardware systems such as testing equipment, computing equipment. The hardware system consists of 2 sets of laser triangulation rangefinding system, on-site signal acquisition and transmission system, operation unit, host analysis and control alarm system, etc. The software of WGS-L200 laser slab/ plate steel width measuring system mainly includes data acquisition and analysis, alarm software and data visualization operation software in the host system. The data analysis system analyzes and converts the data transmitted by the signal acquisition and analysis system into the visual data of the main control room, and completes the width measurement monitoring work in the slab production operation through the set alarm threshold. The measuring principle of the system The WGS-L200 Laser Slab/Plate Steel Width Measuring System is mainly composed of computing processing software and hardware systems such as testing equipment, computing equipment. The hardware system consists of 2 sets of laser triangulation rangefinding system, on-site signal acquisition and transmission system, operation unit, host analysis and control alarm system, etc. The software of WGS-L200 laser slab/ plate steel width measuring system mainly includes data acquisition and analysis, alarm software and data visualization operation software in the host system. The data analysis system analyzes and converts the data transmitted by the signal acquisition and analysis system into the visual data of the main control room, and completes the width measurement monitoring work in the slab production operation through the set alarm threshold. The features of the system 1. Using the principle of laser triangulation reflection, it is very suitable for dynamic measurement, and the dynamic measurement accuracy is high. 2. Non-contact type, namely, the laser rangefinding sensor is installed on the upper and lower sides of the strip conveying guide groove, and the width measurement device is not in direct contact with the strip. 3. Continuous and fast sampling measurement, the sampling frequency is 300Hz-2000Hz. The measurement frequency can be set freely to realize high-speed width detection. 4. It can effectively identify and compensate the beating, inclination, side deflection and profile of the tested plate; 5. Excellent mathematical model realizes accurate width detection of the bad profile; 6. The software interface is good, powerful, easy to operate and maintenance-free; 7. The software has self-diagnosis function; 8. Full digital detection, automatic calibration system; 9. High measurement accuracy and fast response; 10. Using optical fiber signal transmission; 11. Quality control alarm; The technical parameters Measuring distance: 0.5-0.8m (according to the on-site environment) Resolution: ±0.1mm Repeatability: 0.2mm Measurement output frequency: 100-3KHz Laser class: 2 (IEC60825-1:2014) Protection class: IP65 Communication method: TCP/IP communication
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Pakistan
imported Friesian 4 yr old mare for sale. This filly has been backed a few months ago in Holland just for 2 weeks and then came to the uk. advertised due to her needing more one to one. the most amazing mover and really one to be graded and could do well. sad sale as just overstocked. no bargain hunters need to inquire pls as I won't accept offers price is firm. No novices pls. this mare is not for the pussy due to being a little worried with mounting but will settle quick. extremely low inbreeding only 0.39% her sire is the top stallion Sjouke 453 dam is Katrina who is out of Sierk 326
Rs 50.000,0
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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)
Buy Verified Cash App Accounts As it acquires clients, checked accounts become fundamental for organizations and people to completely get to its highlights. A checked money application account permits you to send, get, and pull out a lot of cash, making it ideal for business people, consultants, and financial backers. Purchasing a confirmed money application account has turned into a pattern now, with numerous suppliers offering this help at a sensible cost. In any case, it means quite a bit to purchase from a confided in source to stay away from tricks or fake records. You will learn the fundamentals of purchasing verified cash app accounts and everything else you need to know before making a purchase in this article.
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Pakistan (All cities)
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 1.000,0
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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)
Overview In order to meet the needs of producing various specifications of continuously cast products, shorten the time for replacing the mold, and improve the production capacity and production efficiency of the continuous casting machine, the mold online width adjustment system is the key technology for efficient continuous casting. The online mold width adjustment system enables the two narrow sides of the continuous casting slab mold to move inward or outward in small steps until the predetermined width is reached. During the production process, the adjustment of the mold’s width can be completed without stopping the machine. Generally, the online width adjustment of the mold needs to be connected with the online taper measurement of the mold. Only with adjustment and detection can the online adjustment range of the mold be accurately controlled. Fig 1 Mold online width adjustment system The components of the system Workstation: host system, system width adjustment control, taper detection. On-site operation box: real-time display of the current control status, manual operation to adjust parameters. Digital Electric Cylinder: Precise digital control of electro-hydraulic drive cylinder, which can achieve high-precision quantitative control. On-line measurement of taper: Install it on the narrow-face copper plate of the mold, and monitor the taper of the narrow-face copper plate in real time. Cooperate with the detection feedback control of the width adjustment system, so as to achieve high-precision adjustment. FIG 2 System block diagram The technical parameters Adjustable range: 0-1250mm (unilateral) Control accuracy: 0.02mm/0.05mm/0.1mm Step resolution: 0.01mm/0.02mm Running speed: 0-10mm/s Power: 3.5KWl 16-bit encoder: 65536 pulses Weight: 25Kg Shell: high-strength aluminum alloy FIG 3 Syetem software interface The functions of the system Realize online width adjustment function Realize the online real-time monitoring function of mold taper Continuous casting production adjustment and non-stop production One-key operation in the main control room, automatic completion High adjustment accuracy and fast speed The interlock control of the continuous casting steelmaking system can realize automatic steel pouring
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Pakistan (All cities)
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Pakistan (All cities)
Elevate yourself with ultra luxurious apartments by Risinia Skyon Bachupally gated community project. Risinia is offering 2 and 3BHK Gated Community flats in Bachupally Hyderabad. Book a Dream Home Now!
Rs 5.599,0
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Pakistan (All cities)
Auromotive and boars parts , engines both new and used of any type of car you want we deliver any where you want in Dear customers. Auromotive ebgines and boars from 1980's till 2024. We supply New, Used and Foreign Used parts. Feel free to Contact us for your inquiries thank you.
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Pakistan (All cities)
Dear Customer, Welcome to Home of SSD Automatic Solution! Mercury Chemical Consultant Group is a very mature organization with operational excellence at its heart, based on the principle of taking work to the location where the best talent is available, where it makes the best economic sense, with the least amount of acceptable risk, to strive relentlessly, constantly improve ourselves, our teams, our services and products to become the best and we offer Machines to do the big cleanings and we do delivery of Products/Materials to buyer’s destinations. It impresses me to bring to your notice that we have Original currency Laboratory and Equipment’s use in cleaning all semi processed Currencies, like Anti-breeze bank notes and deface Bank notes. We are manufacture and seller of all sorts of chemicals which includes: SSD AUTOMATIC SOLUTION SUPER AUTOMATIC SOLUTION ACTIVATION POWDER MERCURY CLEANING MACHINE CONGEAL CHEMICAL MELTING We supply all materials used in treating and cleaning of any type of defaced currency, Pounds, CFA France, Euros, Dollars and other currencies. Our qualified professionals are ever ready to meet and handle the clean if you so wish, also we help and clean for the customer who don’t have money to buy Chemical/Materials after registration. Contact us immediately for inquiries and Solutions. We will take a note for test in the Laboratory which will enable us to know the chemical that will work on the currency. WE WILL BE PLEASED TO WORK FOR YOU. ***************************************** ASIA OFFICE Name: JERRY WILL WhatsApp OR Call: 00919582553320 Email: techjerry7@gmail.com MERCURY CHEMICAL SENIOR TECHNICIAN LONDON OFFICE: Dr. Rooney Deo E-mail: mercurychemical@consultant.com MERCURY CHEMICAL LAB COORDINATOR *****************************************
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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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Ali Masjid (Federally Administered Tribal Areas)
To Purchase , For Enquiry : (wh.ATSa.saP.p.p. or call : +995 597 13 0228‬) Payment - Payment - BTC / Ethereum / Bitcoin Cash / USDT ETH Warranty& Return Policy - 3 Year . Shipping - FREE - SHOP TOP DEALS - Discount up 30% to 40% OFF Available in Stock : crypto currency S19J S19 Pro mining machine ,100% Genuine Asic Miners in stock , Goldshell miners, Ebang miners ,Avalon miners , Whatsminer Asic miners , Gpu Video Cards . crypto currency mining machine Free shipping . ASUS TUF Gaming GeForce RTX 4090 OC 24GB GDDR6X NVIDIA Graphics Card Nvidia Gigabyte GeForce RTX 4090 GAMING OC 24GB GIGABYTE GeForce RTX 4090 GAMING OC 24G Graphics Card GIGABYTE GAMING OC GeForce RTX 4090 24GB GDDR6X NVIDIA Graphics Card ZOTAC GAMING GeForce RTX 4090 Trinity OC 24GB GDDR6X Graphics Card ASUS ROG Strix GeForce RTX 4090 OC Edition Gaming Graphics Card Our production and fulfillment departments perform a final frequency check prior to shipping. If you selected a frequency that is not compatible with the shipping address, our support team will contact you via email to confirm the frequency on the order. A form will be provided for you to complete if you’d like to proceed with this unsupported frequency. If the form is not competed within 7 days of receiving this email, our fulfillment team will change the frequency, so that it complies with the region where the miner is being shipped. email:: atashstarimpex1@gmail.com whatsapp or call : +995 597 13 0228
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