Last week, the London Metal Exchange copper market was slightly tighter due to tight fundamentals. Metal consumers, producers, analysts and traders gathered in London to participate in the LME annual meeting, resulting in few trading seats and at the same time, last Wednesday. The expiration of options (options) also increases uncertainty and volatility. London's three-month copper closed at $3,941/ton on Thursday, up $37 from the end of the previous period.
The Shanghai copper market showed a pattern of slightly lower prices. As the copper price is already in a historically high area, the differences between the long and short positions have been aggravated, and the investors have a strong wait-and-see attitude. Coupled with news that the State Reserve has to sell 3 to 50,000 tons of copper, the Shanghai Stock Exchange stocks have also increased significantly, putting pressure on the market. The main 0601 contract closed at 36,600 yuan/ton last Friday, down 20 yuan from the previous Friday's closing price. A total of 329,810 contracts were sold each week for a total turnover of 60.316 billion yuan.
Last week, the international aluminum market was stronger than the copper futures. Fund buying gradually increased. The increasing demand for aluminum and high oil prices meant that the outlook for aluminum prices was bullish. At the same time, from the fundamentals, there may be some production plants in Europe and North America. It also makes the market stronger. London’s three-month aluminum closed at $2014/ton on Thursday, up $54 from the end of the previous period.
Shanghai Aluminium Market is still within a narrow range, and under the influence of continued production cuts, aluminum supply is likely to decrease. In the current peak season, it is favorable for prices to rise. However, the price of alumina has risen weakly in the short term, making the aluminum price increase limited. The main 0601 contract closed at 17,210 yuan/ton on Friday, up by 70 yuan from the previous Friday's closing price. In the week, the cumulative turnover of contracts reached 42,480 contracts, and the transaction value was 3.639 billion yuan.
High Speed Door Motor And Control Box
Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.
About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.
About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: ＜16 ㎡; Daily operating time: ＞2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.
The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.
System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.
Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.
The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.
Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.
Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.
High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.
Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.
About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.
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Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com