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Pakistan (All cities)
Unlock exam success with Ziyyara's English lesson plans, your secret weapon. Our friendly and expert tutors craft personalized lessons just for you. With our engaging online classes for English, learning becomes enjoyable and effective. WHat we offer our students: Personalized learning: Tailored English lesson plans to meet your unique needs. Expert tutors: Friendly and experienced instructors to guide you. Convenient online classes for English: Learn from the comfort of your home. Join our English tuition classes and confidently ace your exams in no time. Let's achieve greatness together. Book a demo class for english grammar classes Call us @ +91 9654271931. For more visit: https://ziyyara.com/online-tuition-for-english
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Pakistan (All cities)
GCSE online tuition can be a game-changer for your child's education! At Ziyyara, we offer personalized support to help your child tackle challenging subjects with confidence. Our friendly and experienced tutors make learning engaging and fun, ensuring that your child stays motivated and on track. Whether they need help with tricky topics or a boost in confidence, our online GCSE tuition is here to guide them every step of the way. Ready to see your child succeed and thrive in their studies? Let’s get started on this exciting journey together. Book your Demo today Call us at +91 9654271931(India), +971-5055 93798 (UAE). Or visit: https://ziyyara.com/online-tuition-for-gcse-board
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Pakistan
i have a variety of beautiful, yellow, white, red, yellow/green canaries for sale. male and female. you can get them separately or in pairs! lovely gift for anybody. prices range from £25 and above. offers can be made, when you come to view the birds.
Rs 4.000,0
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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)
Risinia is offering gated community apartments in Bachupally. Hurry to book the 2 and 3 BHK Bachupally flats for sale and live your new life at your Dream home.
Rs 5.599,0
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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 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)
We provide the best Website Design services in Hyderabad, India. Our goal is to utilize the newest technologies to develop websites that are efficient and modern. Since mobile devices represent the majority of traffic in the modern digital world, we realize how important it is to stay updated. The goal of our project is to transform your website into an effective marketing tool that engages your audience and accelerates the expansion of your company. We are the best Website Design company in Hyderabad, with a focus on making amazing websites that meet your unique requirements. You have confidence in Apple Digital Network to provide you with an excellent web presence that is customized to meet your business goals.
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Pakistan (All cities)
Hey! Looking to give your brand the boost it deserves? You’re in the right spot. At Sapttechlabs, we’re your go-to digital marketer, here to make your online life easier. As an Online Digital Marketing Agency in India, we’ve got the skills to make your brand stand out. Whether you’re in Delhi and need a reliable Digital Marketing Agency in Delhi or just want to amp up your online presence, we’ve got you covered. From increasing your website’s visibility to creating content that clicks, we’re all about getting you the results you’re after. Let’s team up and make your brand’s digital journey a success. Ready to roll? Drop us a line, and let’s make it happen Call us at: 7303139390 For more visit: https://sapttechlabs.com/best-digital-marketing-agency-in-india/
Rs 0,0
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Pakistan (All cities)
Specification electric motor scraps sealed units purity: 99.97% with connection box consist of aluminum case, with full copper content inside voltage220/440 voltage 50 or 60 hz. Size : 100 -500 cm3 power 2 Hp to 40 Hp Three phase Compressor weight: 6Kg, 8Kg, 10Kg, 12Kg 14kg 20kg -22 kg 40kg material : oil drained, comes copper Inside bulk quantity available
Rs 0,0
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Pakistan
One is 7 months old (not sexed); freely flying, like to be out of cage all day, freely flying around. Other one is 5 months old (breeder told male, but not sexed) has already started training; steps on a perch now on demand, wing feathers growing back, likes to be outside cage on his stand.
Rs 4.000,0
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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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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)
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
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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