Jiangsu Haiheng Buiding-Materials Machinery Co.,Ltd
Pre-stressed spun concrete poles, also known as hollow spun concrete poles, are commonly used in various construction projects, such as electrical power transmission lines, street lighting, and signboard foundations. These poles are made of high-strength concrete and are designed to withstand the loads and forces associated with these applications. The pre-stressing technique used in the manufacturing process gives these poles their characteristic strength and durability. The technique involves...
The dry asbestos packing is made of asbestos wire and is used for sealing and heat insulation of various heat equipment and heat conduction systems. The heat loss at 550 °C is not more than 32%. Dry-spun asbestos packing with clip wire (copper wire, nickel wire or stainless steel wire) can also be produced according to working conditions. The main technical parameters: Pressure 2~10 rotary pump 2 Mpa *10bar Reciprocating pump 10 Valve 10 Temperature 350 °C Line speed 2~10 m/s Density 1.1~1.3...
The concrete square pile mold can be used to make concrete square piles. In the process of making, standard and qualified products can be made according to certain use methods, and can be used normally. Before using the mold, it should be checked to see if the surface is smooth and flat. Only if the mold is smooth enough can the surface of the product be smooth enough, with sufficient sealing, the corrosion resistance of the product will not be affected, and the durability can be guaranteed....
At present, there is a kind of concrete antifreeze liquid on the market that is different from other waterproof coatings on the market. It is an alkali-activated chemical permeation solution. It uses the method of permeation to make the free alkali in concrete react with the catalyst of the concrete permanent condensate. , thus forming a crystal-like substance, which can fill all the fine pores in the concrete and become part of the concrete, forming a waterproof layer with an inner permanent...
China Automobile Association data, China's new energy vehicles in 2016 exceeded 1.09 million, the world's share of more than 53%, 2017 production and sales exceeded 700,000 vehicles should be a high probability event, the world's leading position in new energy vehicles has been established, the national grid, special Calls, star charging and other enterprises have built a dense charging network, which has made the development of the industry more emboldened. The enormous value of charging...
(1) Impermeability: refers to the performance of commercial concrete against the penetration of liquids and gases. Because there are interconnected pores and capillaries in the commercial concrete, as well as honeycombs and pores due to the lack of compaction, so that liquid and gas can penetrate into the commercial concrete, the intrusion of moisture and air will cause the steel to rust and cause harmful liquid and gas. Intrusion will deteriorate the quality of commercial concrete, and the...
Building molds can use plastic molds or steel molds. The cost of plastic molds is relatively low. So why use steel molds? Let's talk about this with everyone. First of all, although the plastic mold is low in price, it also has many disadvantages: 1. Once it is damaged, it is completely scrapped. Plastic molds cannot be repaired. Once broken, they can only be replaced with new ones. Moreover, if the cost is so low, no one will do anything to maintain a bad mold. We know that in construction...
The "number of poles" of a three-phase asynchronous motor refers to the number of poles of the excitation winding on the motor. How to classify it specifically, what is the difference between different series of motors? The following is a summary of the editor of Dalan Motor, hoping to help friends who do not understand. The speed of the asynchronous motor is graded and is determined by the "pole number" of the motor. The number of poles reflects the synchronous speed of the motor. Two poles...
When you lift a construction site and piling it, most people will think of the huge bangs and vibrations that occur when the air hammer falls. The reporter recently saw a new type of pile driver in an interview with a Japanese technology research and development company in Kochi City. It changed the traditional “pile” into a “pile”, overcame the shortcomings of noise and vibration, and improved ergonomics. This kind of machine uses the reaction force generated by the inverted steel piles to...
On November 23, 2010, the 5th China International Construction Machinery, Building Materials Machinery, Engineering Vehicles and Equipment Expo (baumaChina2010) will be grandly opened at Shanghai New International Expo Center. Oligarchs and cutting-edge forces from the global construction machinery industry will gather to gather upstream suppliers, complete machine manufacturers and end-users, build a complete industrial chain, form direct dialogues and exchanges, and jointly seek business...
Strong leak-proof slurry design, no burr at the mouth of the nozzle, smooth mold opening, all friction rings in the mold are all 45# cast steel, and the steel plate used is the high-quality steel plate produced by Shandong Steel, the largest steel plant in Shandong, to ensure the mold's Wear resistance, plate cutting using the industry-leading plasma cutting machine, to ensure that the cutting edge is neat and smooth, mold welding all adopt advanced domestic carbon dioxide protection welding,...
Large centrifugal casting machines are mostly used to produce rolls. In centrifugal casting, the rotational speed of the mold (also called the tube mold) is very important, especially in the roll production, which requires secondary casting (adding core), and particularly requires strict control of the speed, time and temperature. In order to meet the casting process requirements of the rolls, we designed a control system for the large centrifugal casting machine. The system controls and...
Electromechanical " target=_blank> Mechatronics Technology in F2601 Rotor Spinning Machine Application Chen Shurong% Yan Bin 8A Article Number 1004―6429(2002)05*Electromechanical" target=_blank>Mechatronics Technology in Today's Manufacturing Industry The application is more and more extensive, and it is no exception in the textile machinery industry. In particular, the upgrading of textile machinery products is playing an important role. The F2601 rotor spinning machine is a new type...
Reasons and Countermeasures for Unplanned Parking of R535 Spinning Machine Han Shufa, Zhang Yanhong, Guanzheng Xinxiang Chemical Fiber Co., Ltd., Xinxiang, Henan 453011, China) Reasons for the high number of unplanned parking during the year and the installation and maintenance of the sixth filament workshop The corresponding countermeasures adopted, that is, grasping the key processes of installation and maintenance of the spinning machine, and strengthening the construction of the workforce...
Recently, Mazuoli (Dongtai) Textile Machinery Co., Ltd. undertook the scientific and technological research project of Jiangsu Province - "DTM149 type of integrated ring spinning machine research and development" project passed the technical team organized by the Science and Technology Department of Jiangsu Province and the Science and Technology Bureau of Yancheng City Identification of results. After reviewing the documents and materials, inspecting the production site, and testing the...
Beijing Zhongli Machine Chemical Fiber Engineering Technology Co., Ltd. successfully developed a new type of polypropylene FDY spinning combined machine, and recently successfully launched in an economic industrial zone in Guangdong. The machine can spin six (900d) silk cakes under the condition of spinning speed of 2000m/s, once again breaking through the technical level of the previous four and six (500d) cakes of Zhongli Machine Company, and succeeded. The simplified process route of...
To extract acetic acid from water, our water quality conditions are as follows: treatment volume 2t / h, acetic acid 3wt%, ph ~ 3 or so we design the use of extraction to recover acetic acid. After extracting acetic acid, we design and reuse distillation to recover 1-10wt% of methanol in water. I would like to ask about the cost of the equipment and the efficiency that can be achieved under this throughput. What equipment is good for extracting acetic acid from water? A centrifugal extractor...
RY air-cooled centrifugal hot oil pump bearing. Stuffing box heat cause machine repair failure cause 1 stuffing box insufficient lubricant or stuffing box does not go oil. The packing in the stuffing box is pressed too tightly. 3 The pump shaft is bent. RY air-cooled centrifugal hot oil pump bearing. Packing box heating cause machine maintenance [cause of failure] 1 The stuffing box is insufficient in lubricating oil or the stuffing box does not go into oil. 2 The packing in the stuffing box is...
I. Introduction The spinning machine is a spinning device that drafts, twists, and winds semi-finished rovings or slivers into finished yarns for spinning. It is the main equipment in the cotton spinning industry. The yield and quality of the spun yarn determine the overall quality of each process in the entire spinning process. The production unit of a spinning machine is a spindle, and the production level of a spinning machine is generally measured in terms of the production volume per...
0 刖 In the cotton spinning ring spinning system, the fiber-spun project can increase the fiber straightness from 87% to 90% to 93%1 by stretching, which is beneficial to improve the uniformity of the strip. However, after the drafting and winding of the roving frame, the yarn quality indicators such as the uniformity of the strip, the unevenness of the weight, the unevenness of the strength, and the nodules tend to deteriorate. Due to the defects of the structure of the conventional roving...
Recently, Siemens Metallurgical Division of Industrial Business released a new spinning machine upgrade technology. At a speed of 100 meters per second, the spinning tube spinning machine in the long rod mill can reach a record life. Thanks to the new patented materials, the throughput of the same tube can be increased to 130,000 tons and the number of machine downtimes and production interruptions can be significantly reduced. The spinning tube is a key component of the longitude production...
Due to the large amount of water used in the paper industry, a large amount of wastewater generated in the papermaking process is also one of the important causes of water pollution. This is not only the primary problem of pollution prevention and control in China's paper industry, but also the primary problem in the treatment of industrial wastewater in China. The large amount of phenols and toxic substances produced in the papermaking process pose a serious threat to the ecological...
The new generation of digital four-motor variable frequency drive EJK211 roving machine independently developed by Pacific Electromechanical Group Shanghai Second Textile Machinery Co., Ltd. has added new highlights to China's digital textile machinery. The new roving frame with independent intellectual property rights uses four new motors to directly drive the new control system of the flyer, bobbin, roller and dragon ribs, and the computer controls the four inverters to synchronize drive...
Spin forming is a special method of metal plastic forming. The principle of spin forming is to fix the blank on the die. The die rotates with the blank at a high speed. The outer roller exerts a great pressure on the blank, causing the metal blank to deform and finally form. Parts that match the shape of the mold. Spinning is divided into ordinary spinning and strong spinning. Ordinary spinning means that the shape of the blank changes during the forming process, and the thickness of the blank...
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