Posts du forum

vacuumfurnace1
15 sept. 2021
In Découvrez votre forum
Plastic scratch tester This TABER 551 hear Scratch Tester made by Qinsun company is multifunctional scraping instrument. Scratch tester Standards: GB/T 2918,GB/T 6151,GB/T 8424.3,PV3952,BMW GS97034-2,BMW GS97034-9,GMN 3943-2003,FLTM BN 108-13,STD1024-3113,GMW 14698-A,GMW 14688 Scratch tester Application: Erichsen scratch tester used for a variety of automotive interior materials, such as plastics, rubber, leather, fabric, coating materials, coating materials and other non-composite materials such as scratch resistance detection. Instrument features: 1. The apparatus consists of the drive motor mechanism, scraping component, the sample holder fixing devices and other components. 2. The scraper assembly includes a bracket scratch; scraping means scrape the specified bit sets, pressurizing means (weights and weight support bar) and the like. 3. Free installation, replacement and removal of different specifications, scraping means can be implemented in a uniform way linear motion scraping under different loads. 4. The use of embedded systems, man-machine interface for automated control of the testing process, using precision servo motor, ball screw driver for the scraping speed standards under the control accuracy with a decisive role. 5. The use of tungsten carbide makes scraping means, increase the instrument pot life. 6. The use of aluminum and stainless steel, simple appearance, lightweight and corrosion resistant. Technical Parameters: 1. The travel range: 10-200mm; 2. Speed range: 10-200mm / s; 3. Speed Buffer: 10 ± 1mm; 4. The metal scraper head diameter: 0.5mm, 0.75mm, 1mm (Erichsen318), 3mm, 5mm, 7mm; 5. The metal scraper head material: tungsten carbide; 6. Pressurized weight and scraping components total weight: 2N, 3N, 5N, 7N, 8N, 10N, 12N, 15N, 20N (optionally with option) mass error does not exceed 1%; Textile&Apparel test machine TABER leather wear test machine test methods and standards Jacket clothing leather identification
0
0
1
vacuumfurnace1
06 juil. 2021
In Découvrez votre forum
Why is a Hotel Phone System Important The role of a hotel telephone system has changed dramatically since the rise of smart phone technology – with guests preferring their mobile phones over traditional hotel systems. But don’t be fooled – even though it’s no longer a direct revenue-earner, choosing the right telephone system is no less critical to your hotel’s overall success, whether it’s traditional, hosted or a cloud based solution or taking advantage of overhead savings using SIP. Having a flexible and modern phone system is crucial to the growth of your hospitality service. This system plays a variety of roles in your hotel’s economy – from delivering outstanding guest experience, to integrating with your CRM system, it’s important that you choose the best hotel phone system to suit your individual requirements. Our effective hotel phone systems have a range of features to help support your business. Hotel Phone Systems Types How to upgrade hotel PBX What Are The Main Advantages of PBX Hospitality Phone Systems?
0
0
1
vacuumfurnace1
18 mai 2021
In Découvrez votre forum
Understanding IP private branch exchange (PBX) Private branch exchanges (PBXs) handle call switching and routing within an organization, and IP PBX systems are the next generation of Internet-based PBX communications. To provide the cost savings of IP-based phone calls for small companies, But as the organization grows, users will want to look at more sophisticated options, the same as if using a public switched telephone network (PSTN). Medium- to large-sized businesses have long used private branch exchange (PBX) switchboards to route incoming calls from a number of external lines among a larger number of internal lines. This saves money because there's no need to have a separate line for every employee, and makes line sharing more efficient. Most systems in use today are technically PABX, which means the call routing is automated, rather than dependent on a human switchboard operator. < a href=" http://en.newrocktech.com/ntshow/1001.html">Benefits of VoIP Phone Systems for Hotels and Hospitality < a href=" http://en.newrocktech.com/ntshow/1002.html">communication solutions for hospitality < a href=" http://en.newrocktech.com/ntshow/1027.html>What are the benefits of VoIP
0
0
1
vacuumfurnace1
05 nov. 2020
In Découvrez votre forum
Roots vacuum pump unit operating sequence We know that roots vacuum pump needs front stage pump when it is used. Vacuum unit generally includes roots pump water ring pump vacuum unit, roots pump water ring pump large air pump unit, roots pump water ring pump parallel mechanical vacuum pump unit. For the vacuum unit, the operation sequence is more important.1. When there is no bypass valve in the unit, the water ring pump should be started first. The gas in the pumping system enters the water ring pump through roots vacuum pump (the gas drives the rotor of roots pump to rotate itself, just like a flowmeter), and then it is discharged into the atmosphere. When the suction pressure of the water ring pump (or the suction pressure of large and medium air pumps, if there are large and medium air pumps connected in series) reaches the original standard value of roots pump (i.e. allowable working pressure of exhaust pipe), roots pump will start and generator set will be announced to operate and start working.Two When the unit is equipped with a bypass valve, the water ring pump is started first, and then the root vacuum pump is started. At this time, the pressure difference between the root pump and the exhaust gas is large, and the bypass valve is opened automatically. The gas part of the pump enters the water ring pump through the bypass valve, and the other part of the pump enters the water ring pump under the action of the root pump. The air extraction rate is obviously enhanced, so the pre vacuum value of the root pump is quickly reached, and the air pressure difference between the inlet and the exhaust is small, The valve closes automatically (or manually), and the unit works normally. This method can greatly shorten the pre drawing time, but the equipment is more complex.Water Ring Vacuum PumpDry Scroll Vacuum Pumpindustrial vacuum pumps,vacuum furnaces
0
0
1
vacuumfurnace1
05 nov. 2020
In Découvrez votre forum
Heating problem of screw vacuum pump With the development of industry now, we should be very familiar with the screw vacuum pump, because its characteristics are widely used, in order to understand it better, let's understand the heating problem of screw vacuum pump together.Now the screw vacuum pump has excellent corrosion resistance. When using the screw vacuum pump, we will encounter the situation that the inner wall temperature of the reducer is very high two hours after starting. This situation is very unusual for machinery and equipment. Therefore, we should solve it immediately. If the temperature does not drop, please note that the oil window on the screw vacuum pump cannot be used with the plexiglass plate. Lift the low temperature cooler to the vacuum pumping position of screw vacuum pump, and apply cooling water of minus 10 degrees to reduce the temperature.Screw vacuum pump manufacturers remind to reduce the temperature of working fluid in front of screw vacuum pump, measures should be taken to reduce the temperature, less than 20 degrees, in order to achieve better results.Industrial craneRoots BlowersRoots Vacuum Pump
0
0
1
vacuumfurnace1
05 nov. 2020
In Découvrez votre forum
dry vacuum pump operation process What is the operation process of dry vacuum pump? Let's discuss the operation process of dry vacuum pump as follows: After the equipment is running, with the rotation of the motor and the action of the crank connecting rod mechanism, the piston in the cylinder repeatedly makes reciprocating motion. As the piston moves from left to right in the cylinder, the pressure in the left chamber will continue to decrease as the cylinder volume increases. When the pressure in the left chamber is gradually lower than that in the pump chamber, according to the principle of air pressure balance, the gas in the pump chamber is sucked into the left chamber one by one through the suction valve. At this time, the suction valve is in the suction, which completes half of the working process of the vacuum pump.When the piston moves to the right, the left chamber of the cylinder is filled with gas. When the piston moves from right to left, the suction valve of dry vacuum pump will close automatically. As the piston moves from right to left, the gas is slowly compressed. When the steam body in the cylinder reaches the exhaust working pressure, the exhaust valve will open to exhaust and carry out the working circulation system. When the piston moves again from the left end to the right end, the above cycle is repeated until the suction container reaches a relatively balanced pressure.CL Sereis Cone Liquid Ring Vacuum PumpRotary Vane Vacuum PumpDry Scroll Vacuum Pump
0
0
1
vacuumfurnace1
09 juil. 2020
In Découvrez votre forum
vacuum pump in gas drainage Gas accident is the most important thing in coal mining industry in recent years. Dozens of innocent people can be killed in a mine accident. Therefore, the safety of equipment in coal mining industry can not be ignored. There are several basic forms of gas drainage by water ring vacuum pump / compressorAccording to the relationship between coal mining and drainage: pre pumping before mining, that is, the drainage of coalbed methane from the undeveloped coal seam. Because the mining area is wide and the pipeline is long, it usually has dozens of kilometers. The working environment is bad, so the water ring vacuum pump / compressor is required to have large air volume, high vacuum degree and reliable operation. Now the water ring vacuum pump / compressor is designed and manufactured with international advanced technology, and the gas volume can reach 500 ~ 70000m3 / h, which can fully meet the needs of coal mining industry. This pumping method has gradually become the mainstream. This method not only becomes the guarantee of safe production, but also becomes a new clean energy, which has strategic significance for China, a big coal country. Pumping while excavating and mining while pumping, that is, CBM drainage in the process of coal seam mining. After mining drainage, namely abandoned mine, mining roadway CBM drainage.The drainage method is divided into: drilling drainage, drilling coal seam, and using loosening technology to increase the release area and conduction of coalbed methane, so as to make the rapid release of coalbed methane. Reduce the release in the process of excavation. This method has good effect and high utilization rate of coalbed methane. Generally, water ring vacuum pump / compressor is used for pumping. Roadway method drainage, the goaf roadway, mining roadway gas drainage, to ensure the safe concentration. It includes surface vertical well pumping, mixed pumping, etc.Roots Vacuum PumpSSR Roots Type BlowersDry Type Oilless Vacuum Pumps
0
0
2
vacuumfurnace1
09 juil. 2020
In Découvrez votre forum
Improvement of anticorrosion technology of water ring vacuum pump 1) According to the different requirements of corrosion resistance and cavitation erosion degree of each flow passage component, different process measures are adopted on the substrate made of cast iron, cast steel or carbon steel, which greatly improves the acid resistance, alkali resistance and cavitation resistance, and prolongs the service life. The lining layer of flow passage parts can work reliably within the specified maintenance period under the condition of vacuum degree 3kpa and water and steam scouring. The maintenance cycle is 0.5 ~ 2 years according to the different working conditions such as corrosive medium, temperature and pump speed. Compared with stainless steel, the anticorrosion cost can be reduced by 1 ~ 5 times under the same working conditions and service life.2) Because the matrix of the vacuum pump parts will not be damaged, when the corrosion-resistant lining fails, it can be repaired repeatedly simply, economically and effectively.3) It can be used in all water ring vacuum pumps with flat distributor structure, with low cost, long service life and relatively simple manufacturing process. It is suitable for pumping corrosive gases without solid substances in chemical, metallurgical, environmental protection, papermaking, pharmaceutical and other industries.Water Ring PumpWater Ring Vacuum Pump manufacturersWater Ring Vacuum Pump
0
0
1
vacuumfurnace1
09 juil. 2020
In Découvrez votre forum
Vacuum pump in biogas slag suction car 1. When the vacuum pump exhausts air from the tank and reaches a certain negative pressure for slag suction, the rear valve is usually closed first, and then the vacuum pump is stopped. At this time, there is still a certain degree of vacuum in the tank, and the mechanical oil will be sucked into the tank (visible through the steel wire hose for connection).2. When the vacuum pump inflates and pressurizes the tank, due to the vehicle running on the field, there must be a shift demand. However, the pump will stop when the clutch is pressed. If the vacuum pump stops running, a large amount of mechanical oil will be sprayed outside.As the rotary vane vacuum pump needs a certain amount of mechanical oil lubrication and sealing, and the existence of the above two phenomena will lead to the loss of more than 1L of stored mechanical oil, which needs continuous replenishment by operators. In this way, it not only causes great waste of manpower and material resources, but also reduces the work efficiency, even damages the parts of vacuum pump, and also causes certain pollution, which seriously restricts this kind of vehicle To promote the use of.In order to overcome the above problems, some enterprises use the method of refitting "air compressor" instead of "vacuum pump", but the production cost is greatly increased, and the air compressor body is too large, and the layout is difficult.industrial vacuum pumps,vacuum furnacesRotary Vane Vacuum PumpDry Scroll Vacuum Pump
0
0
0
vacuumfurnace1
22 mai 2020
In Découvrez votre forum
Connect the oil line of the oil pipe in and out, connect 380V, connect the safety ground line, check whether each circuit is connected safely, whether the valve of each oil line is open, and then carry out the operation procedure after all is ready. First start the cooling water pump, check whether the water circulation is normal, and then point the vacuum pump, so that the oil in the vacuum pump can operate normally, and then make the vacuum pump continuous operation. When the vacuum surface reaches the limit, the oil inlet valve can be opened to check the oil level in the lower window of the vacuum cylinder. When the oil level is seen in the lower window of the vacuum cylinder, the oil discharge pump switch can be started, the oil discharge filter impurity oil circuit can be normally circulated, and the heater switch can be turned on to release the water in the volatile oil. If there is a large amount of water in the oil, the end of the oil in the vacuum cylinder will increase. At this time, the vacuum degree suitable for the open air control must be played. After the water content is reduced and the oil drift drops, the air discharge valve must be closed to make the vacuum reach the limit. At this time to pay attention to the reaction of the instrument, if the pressure gauge reading is greater than 0.3 MPa, said in the Ming and qing filter filter paper absorb more impurities, need to change a new filter, work has been completed, see the working principle of open valve, make the vacuum degree at normal atmospheric pressure, the cylinder oil, the remaining oil from the oil drain plug inside out, to prevent the next time when using mixed with different types of oil, and pay special attention to in winter, put the net inside the vacuum pump and water tank, otherwise to freeze vacuum pump and storage tank. Related products: Vacuum Pump Heat Treatment Guide,Heat Treatment Equipment vacuum furnace equipment
0
0
2
vacuumfurnace1
19 mai 2020
In Découvrez votre forum
Causes of oil trapped in screw vacuum pump Screw vacuum pump in the use of the process, sometimes there will be oil trapped problem, how to solve it?In order to supply oil continuously, screw vacuum pump requires that the overlap coefficient e of gear engagement is greater than 1, that is, when one pair of gears is not disengaged from engagement, the other pair of gears have entered into engagement. In this way, when the screw vacuum pump has two pairs of gears meshing at the same time, a closed volume is formed between the two pairs of gears' tooth direction meshing linesWhen the sealing volume is reduced, the trapped oil is squeezed and the pressure rises sharply, which makes the bearing suddenly subject to a large impact load, and the screw vacuum pump vibrates violently. At this time, the high-pressure oil is squeezed out from all possible leaks, resulting in the power loss of the screw vacuum pump and the oil heating, etcWhen the sealing volume increases, because there is no oil supplement, a local vacuum of the screw vacuum pump is formed, which separates the air dissolved in the oil and forms bubbles. After bubbles are generated in the oil, a series of problems such as noise and cavitation of the screw vacuum pump will be causedThe above situation is the phenomenon of oil trapped in screw vacuum pump, which will seriously affect the working stability and service life of screw vacuum pumpIn order to solve the problem of oil entrapment, two oil entrapment unloading grooves can be milled on the pump cover of screw vacuum pump. The position of the unloading tank should be such that the trapped oil chamber can be connected with the pressure oil chamber through the unloading tank when it is changed from large to small, and can be connected with the oil suction chamber through another unloading tank when the trapped oil chamber is changed from small to large. The distance between the two unloading tanks shall ensure that the oil pressure cavity and the oil suction cavity cannot communicate at any time.Water Ring Vacuum PumpWater Ring Vacuum Pump manufacturersWhat is water ring vacuum pump
0
0
1
vacuumfurnace1
Plus d'actions