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Pakistan (All cities)
The composition of the system The photoelectric strip automatic center position control system is mainly composed of sensors, amplifiers, PLC controllers, hydraulic control and other parts. System composition block diagram The main technical parameters 1. Detection width: 300-2800mm 2. Detection light source: 220VAC. (100VAC) 30W. High frequency white light works continuously 3. Photodetector: precision die-casting components, time constant 20ms 4. Maximum working voltage: 50VDC 5. Distance from receiver to emitter: 300-1000mm 6. Operating temperature: 0℃-60℃ 7. Resolution: 0.5mm 8. Linearity: ±1%F.S (after linearization) 9. Repeatability error: △R1%, F.S 10. Servo-valve working signal: ±10V 11. Rated pressure (oil pressure): 4.5Mpa 12. Rated flow: 30L/min 13. Symmetry: 10%
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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
Ready for their new home now pure breed beagles puppies. Both male and females available. They are all tri colour and are use to children. Mum is here to be seen with the puppies. For any further info please feel free to contact me. [Bizarte Beagles] Tri-colour Beagle Puppies male and female available.All Registered,pedigree and come with dew claws removed,free for MLS,NCCD by parentage,fully wormed,fully vaccinated with Contra.... ....
Rs 200,0
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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 In order to ensure the quality of the slab, it is necessary to strictly control the performance and various parameters of the CCM’s guide roll within a certain error range. Due to the continuous casting machine (CCM) is large and in a harsh production environment, it is difficult to measure the performance of the continuous casting machine manually, and many parameters are difficult to measure. Therefore, it is very important to have a set of equipment that can simulate drawing of steel billet to realize the measurement of CCM’s various parameters and performance. The multifunctional strand condition monitor uses various sensors to realize the measurement of CCM’s roll gap value, the arc value of continuous casting section, the rotation quality of the rolls, and the water spray pressure under the condition of simulating drawing of steel billet. Therefore, the CCM’s quality can be controlled in real time, and it is convenient for the maintenance personnel to analyze the CCM’s measurement results. The problem areas of the casting machine equipment can also be found. If these problems doesn’t be found in time, it will cause the bad quality of CCM’s products, the steel breakout in pouring process, surface and internal cracks and centerline deviation. The measurement of the strand condition monitor Roll gap value: By measuring the distance between a series of inner arc guide rolls and outer arc guide rolls on the CCM’s roller bed. It can be used to set the correct roll gap spacing for each pair of guide rolls in the slab caster. Arc condition of guide roller : Measuring the position between the position of the CCM’s outer arc guide roll and the two adjacent guide rolls and then measuring the deviation compared with the origical position of CCM’s guide roll, we can obtain the arc condition of the outer arc guided roller. Guided roller rotation: It is possible to know whether each guided roller can rotate freely by measuring. Water spray pressure: The operation of the water spray cooling system can be judged by measuring the situation of secondary cooling water spray at different positions of CCM's width direction. Then we can accurately locate whether the water spray at a certain point is normal. The main components of the strand condition monitor 1. The main body of the strand condition monitor used to measure the continuous casting sector 2. The connecting chain between strand condition monitor and dummy bar 3. The storage rack chain of strand condition monitor 4. Battery charger: 24V 5A 5. Calibration equipment 6. Remote control 7. Laptop 8. Printer 9. Data communication cable The technical parameter 1. The measurement range of roll gap: 210mm, 230mm (can be customized according to requirements) 2. The measurement accuracy of roll gap: 0.01mm 3. The arc measurement range: ±80° 4. The arc measurement accuracy: 0.01° 5. The spray measurement range: 0-10 6. The spray measurement accuracy: ±1 7. The battery usage times: 3 times
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Pakistan
Unfortunately have to sell my Chinese water dragons and I need to down size on my reptile room these 2 are extremely friendly and love to come out and roam full working vivarium vivarium is large as you can see in images so need a van to come remove and 2 or 3 people to carry down stairs please contact me on [telephone removed]
Rs 50.000,0
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Pakistan (All cities)
Transforming your home into a luxurious haven is an art that requires the perfect blend of style, elegance, and functionality. In Saudi Arabia, cities like Riyadh and Jeddah are home to some of the most exquisite furniture stores where you can find everything you need to create a space that reflects your taste and sophistication. Explore Jonathan Adler Products One of the top names in luxury home decor, Jonathan Adler, offers a stunning array of products that add a touch of glamor to any room. Whether you’re looking for statement pieces like a Jonathan Adler tray, an iconic chair, or a unique vase, these products are designed to stand out. Each item from Jonathan Adler combines bold designs with modern elegance, making them perfect for any luxury interior. Discover the Finest Furniture Stores in Riyadh and Jeddah Riyadh and Jeddah boast a variety of furniture stores that cater to different tastes and preferences. Whether you're searching for classic pieces or contemporary designs, these cities have it all. In furniture stores in Riyadh, you'll find an extensive collection of high-end chairs, sofas, beds, and more. The variety ensures that every piece you choose complements your home’s interior. Similarly, furniture stores in Jeddah offer a rich selection of luxury furniture, from opulent dining chairs to elegant tables and side tables. These stores provide not just furniture but an experience, offering pieces that are not only functional but also works of art
Rs 15.000,0
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Gujrat (Punjab)
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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 (All cities)
We have the Outboard Boat Engine OXE. Yamaha We are specialized in the sales of full metal scrap/ recycling material such as ac/fridge compressor , Ceramic Cpu Gold Processor Scraps , H.M.S 1&2, Copper wire scrap,Drained Battery Lead scrap in the UK (LONDON).We have all our product fully ready for sales in good quantity and quality also to be shipped out for our buyers.For Booking : https://wa.link/og0sgp Whatsapp: +15806151130
Rs 150.000,0
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Pakistan (All cities)
Struggling with Discrete Mathematics? Get expert assistance from BookMyEssay! Our professional tutors provide detailed, step-by-step solutions tailored to your needs. Achieve higher grades and deepen your understanding effortlessly. Don't let complex problems hold you back—book your session today and excel in your assignments! Visit: www.bookmyessay.com.au/subject/discrete-mathematics-assignment-help Contact Details: Contact- +1(240)8399485 Telegram link BookMyEssay - https://t.me/Bookmyessays Whatsapp number UK +447441449560 Whatsapp number Australia - +61480048370
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Pakistan (All cities)
Overview Our company focuses on the production and application of the cables in continuous casting steel production. We have rich on-site usage experience, which provides us with technical guarantees for manufacturing high-quality communication cables. For cables of different applications, we have different protection requirements, such as high temperature resistance, anti-pull, acid and salt spray resistance, slightly positive pressure heavy-duty connector, anti-oil pollution, anti-interference, etc. Common industriaI cable for continuous casting 1. Breakout prediction compensation cable 2. Mold level control cable 3. Mold oscillation cable 4. VUHZ sensor cable 5. Mold width adjustment cable 6. Dynamic lightly depress the cable 7. Fixed cable for ladle slag 8. Movable cable for ladle slag The quality control All our products use proven materials to ensure stable and reliable product quality from the source. The core equipment all adopt imported raw materials. From raw material control to wire harness integrated processing, we ensure the stability and consistency of product quality. The scientific quality management system brings the product quality to a higher level. The program customization Our company has been focusing on the production and processing of wire harness products for many years. We have a professional technical team, which can realize synchronous development and technical docking with customers timely, optimize product design, and provide customers with complete solutions for wire harness products. Widely used: All kinds of wire harnesses produced by our company are widely used in major steel mills across the country, such as SHOUGANG, TISCO, HBIS GROUP, TIANJIN IRON PLANT, BAOGRANG GROUP, etc. The first-class product quality, and has won unanimous praise from domestic and abroad.
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Pakistan (All cities)
Explore the top 10 CNC machines for small businesses in 2024! This comprehensive guide highlights the best machines for precision, reliability, and affordability, ideal for entrepreneurs, hobbyists, and small manufacturers. Whether you're looking for a versatile CNC mill, router, or laser cutter, find the perfect solution to enhance your production capabilities, improve efficiency, and grow your business. https://www.tradebrio.com/exporters/cnc-machines.html
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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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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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