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Muzaffarabad (Azad Kashmir)
Brand New Unbox Sony PlayStation 5 1TB Comes with 2 Wireless Controllers & 5 Games All included in the box
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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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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
Beautiful lemon and white female beagle pup for sale, 5 months old, fully vaccinated, microchipped, flee'd and wormed. Not kc registered and as she's our pet, mother or father can't be seen. Very playful, energetic and needs a caring family ....
Rs 200,0
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Pakistan
2 pairs yellows for sale all in top condition ready for breeding they are 2015 bred birds 2 pairs yellows for sale all in top condition ready for breeding they are 2015 bred birds .....................2 pairs yellows for sale all in top condition ready for breeding they are 2015 bred birds
Rs 4.000,0
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Islamabad (Islamabad Capital Territory)
Starting a bakery business is thrilling, but success requires the proper equipment. The instruments you select will not only help you make high-quality baked items, but will also streamline your operations, increasing your bakery's efficiency and profitability. Here's a list of the basic bakery equipment from the Bakery Machinery Manufacturers, you'll require to get started the Successful Bakery Business. https://www.tradebrio.com/exporters/bakery-machinery.html
Rs 100,0
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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
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Pakistan
Our amazing litter was born on 18th of December mum is stunning tri colour and dad is a lemon and white tri both pedigrees dad has five generations blood line with his papers to prove. We have a litter of 9 chunky playful pups all wormed and....
Rs 200,0
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Arifwala (Punjab)
"Unlock your potential with the best PTE coaching in Hyderabad. Expert instructors, personalized guidance, and proven strategies for success."
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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 The handheld roll gap checker is specially used to measure the length between spherical surface, arc surface and plane (or spherical surface). It is specially suitable for the opening adjustment of the roll gap of the metallurgical continuous casters in various specifications, because the roll gap checker has the advantages of high resolution, accurate measurement, stable data and easy to use. Because the opening accuracy of the roll gap checker will directly affect the quality of the casting block, this roll gap checker is an indispensable testing equipment in the continuous casting equipment, which can fully meet the needs of on-site installation testing and use process verification. When the hand-held roll gap meter smoothly passes through the gap between the guide rolls of the continuous casting machine, the upper measuring contact of the hand-held roll gap checker contacts the inner arc roll and the lower measuring contact touches the outer arc roll. The handheld roll gap checker is used in perpendicular to the roll diameter direction, during the pushing process, when the hand-held roll gap meter is in the tangent plane of the upper and lower rolls, the measured value is the smallest at this time, and this value is the roll gap measurement value. The design of the hand-held roll gap gauge ensures that the upper and lower contacts of the roll gap checker can smoothly pass the measured roll along a straight line during measurement. During the measurement process, the roll gap measuring instrument automatically compares the measured values, and displays the minimum measured value on the instrument display interface, which is the current measured roll gap value. The introduction of different types The measuring range of the split hand-held roll gap checker is 180mm - 400mm This hand-held roll gap checker adopts the design that the measuring body and the display instrument are separated. The measuring body can be clamped by an extension rod, which is suitable for online maintenance and measurement of wider slabs, and it is convenient to use the extension rod to send the measuring body into the continuous casting section to measure inside and we can see measurement data on the checker outside. The measuring range of instrument type handheld roll gap checker is 120mm - 400mm This hand-held roll gap meter is light and compact, and it is convenient to carry during maintenance. The measurement value can be seen immediately after measurement, easy to use, and can be equipped with a short measuring rod. It is suitable for the maintenance and measurement of slab online and offline continuous casting sections. It has data printing function, the measurement results can be printed in real time. The measuring range of thin slab hand-held roll gap checker is 60mm - 150mm This handheld roll gap meter is suitable for measuring the roll gap of CSP continuous casting machine and ultra-thin slab continuous casting machine. It is accurate and easy to use. The technical parameters 1. Measuring range of instrument type handheld roll gap checker: 180mm - 400mm (the range can be customized) 2. Measuring range of digital hand-held roll gap checker: 120mm - 400mm (the range can be customized) 3. Measuring range of hand-held thin slab roll checker : 60mm - 150mm (the range can be customized) 4. Measurement accuracy: 0.01mm 5. Working temperature: -25℃~+85℃ 6. Battery capacity: 5000mAh 7. Charger specification: 12V
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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)
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)
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Pakistan
due to a change in personal circumstances and a increase in work hours i am unfortunatly having to look for a new home for my four year old female beagle, jessie. Jessie has been spayed and is a member of the family it has been a very difficu....
Rs 200,0
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