Timeless



 
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Topic:Sky Pump
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Sky Pump (18th Jul 19 at 2:30am UTC)
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Product Profile
This day's pump is a high-quality small boom concrete pump truck independently developed by Xiangjian Heavy Industries. The classic four Z-boom, which combines the technology of Sanyi and Zhonglian Heavy Industries and other large listed companies, is an efficient concrete conveying equipment integrating driving, mixing, pumping and distributing.
Product Advantage
Advantage 1: The whole vehicle height is 3.8 meters, a new industry height, a broader scope of construction.
Advantage 2: Full hydraulic control mixing system, lower noise, stronger adaptability, can meet more comprehensive needs.
Advantage 3: High-power mixer, concrete after full mixing, and good workability, high strength, high quality concrete.
Advantage 4: Single high-pressure pumping mode, cloth outlet pressure up to 10 MP pumping efficiency increased by 25%, fuel consumption decreased by up to 10%, more adaptable.
Advantage 5: One-button automatic feeding system, simple site mixing operation, convenient construction, large volume of one-time pumping, greatly shorten the construction cycle, higher efficiency.
Advantage 6: Short boom pump truck, specially designed and manufactured for rural housing and high-speed rail construction, classical four Z-type boom, convenient cloth, rural and urban areas can adapt to all kinds of terrain.
Advantage 7: With the function of automatic piston withdrawal, the piston can be quickly withdrawn, and the product is easy to maintain and replace.
Advantage 8: The core accessories imported from Germany have excellent performance and long service life. They can not only undertake large-scale projects, but also solve the problem of mixing in rural areas.
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Topic:Shayz'renth and Beyond-Medieval/Fantasy
Leggings
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Leggings (11th Jul 19 at 3:41pm UTC)
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Topic:Shayz'renth and Beyond-Medieval/Fantasy
American Football
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Re: Shayz'renth and Beyond-Medieval/Fantasy (11th Jul 19 at 3:40pm UTC)
<a href="https://bearsportswear.com/">American Football</a>

Topic:Decenio de las zapatillas Nike Free
bdngngnhn
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Re: Decenio de las zapatillas Nike Free (5th Jul 19 at 4:48pm UTC)
Vi ringrazio per l'informazione! Stavo cercando e non poteva trovare. Lei mi ha aiutato!
myshoprite experience

Topic:Operating environment of submerged pump
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Operating environment of submerged pump (27th Jun 19 at 2:26am UTC)
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As a kind of pump, submerged pump has its unique natural application environment.
1. Natural environment of chemical plant. Chemical plant liquids, such as strong acid and alkali liquids, corrosive liquids. The motor is generally at the liquid level, and the pump housing is below the liquid level. Rubber products, fluoroplastics, aluminium alloys, FRP anticorrosion and other unique anti-corrosion properties are mostly used.
2. Industrial wastewater from wastewater pits. If the wastewater pit is generally shallow, sewage treatment by submerged pump is selected, and YW type submerged sewage pump is selected. If wastewater drilling mud is more, NL mud pump is selected. NL mud pumps are all submerged pumps, because of the diversity of design schemes, it can extract more viscous drilling mud.
3. Natural environment of sea surface. There is weak corrosion on the sea surface, so the submerged pump is suitable only. Installation is convenient, simple, the motor on the top and down the sea, is a common pump in desalination processing plants.
4. Natural environment with a higher depth of subsurface. Some load natural environment is more unique, the depth of 15-12 meters below the liquid varies. If a submersible pump or a submersible sewage pump is selected, the cable will be soaked in liquid for a long time, and the air will be oxidized and eroded slowly for a long time, so the safety factor is not high. However, the selection of submerged pump prevents the difficult problem of motor and cable under the liquid.
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Topic:Summary of Mine Submersible Pumps
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Summary of Mine Submersible Pumps (19th Jun 19 at 2:20am UTC)
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Submersible pumps are used in all areas of water extraction, distribution and dewatering, such as deep wells and water plants, for mining applications.
Dehydration using fully submersible motor pumps provides the most economical and maintenance-free solution.
For example, there is no need for an underground pumping station, and the heat of the motor is taken away by water pumped to the ground (less cooling is required).
Maintenance-free, innovative submersible pumps are extremely strict requirements for operational reliability, service life and efficiency.
Summary of Submersible Pump QKS Mine Submersible Pump
Submersible pumps are used in all areas of water extraction, distribution and dewatering, such as deep wells and water plants, for mining applications.
Dehydration using fully submersible motor pumps provides the most economical and maintenance-free solution.
For example, there is no need for an underground pumping station, and the heat of the motor is taken away by water pumped to the ground (less cooling is required).
Maintenance-free, innovative submersible pumps are extremely strict requirements for operational reliability, service life and efficiency.
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Topic:Horizontal tangential fire pump
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Horizontal tangential fire pump (5th Jun 19 at 2:57am UTC)
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XBD-HY horizontal tangential fire pump adopts special hydraulic design and structural design according to GB6245-2006 National Standard for Fire Pump, which makes it more suitable for building fire water supply system selection than ordinary centrifugal water pump. The flow-pressure (Q~P) characteristic curve is smooth and no hump. All parts of friction parts due to rotation are manufactured with wear-resistant, corrosion-resistant and mesh-resistant materials, which have high reliability, high bearing capacity of pump body, strong anti-overload capacity and sensitive start-up. It is more suitable for the use of building fire water supply system and passed the inspection by the national fire product quality supervision and inspection agency.
Tangent fire pump set is developed by our company according to the special place used by fire pump. Its performance and technical conditions meet the requirements of the compulsory national standard of GB6245-2006 Fire Pump. The product has the characteristics of variable flow and constant pressure, that is, in the range of total flow, the head changes little. When the pump changes from zero flow rate to the required large flow rate range, its head changes within 5%, and when the flow rate is small or zero, the pump does not overpressure, thus avoiding the phenomenon that the ordinary centrifugal pump can not supply water when the flow rate is small and the flow rate is large. It greatly improves the efficiency of fire extinguishing and the safety and reliability of fire fighting equipment and firefighters.
The motor of tangent fire pump is a common motor, which does not need to change speed. It effectively solves the problem of pressure fluctuation when the flow rate changes in the process of water supply and serious overpressure when the flow rate is small. Compared with the parallel operation of multiple pumps, it can reduce the number of pumps, reduce the area occupied, and make the operation and management simple. Compared with the variable frequency speed control pump, it can save investment, facilitate management and has more advantages, and is a more perfect solution to overpressure. The impeller of tangent fire pump is open type, with small axial force and no orifice ring, which prevents rust from biting. The pump body and cover can be made of cast iron and ductile iron, and the impeller can be made of aluminium alloy or stainless steel.
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Topic:Can magnetic pump magnets be customized?
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Can magnetic pump magnets be customized? (30th May 19 at 5:24am UTC)
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Can you customize magnetic pump magnets? At the beginning, a customer asked me, I was very confused, because just came soon, some applications of magnets are not very clear, customers may feel that I am not professional and ignore me behind, so it is very important to say professional ah. Later, after understanding, I understand that today's magnetic pump is not much introduced here, mainly about the magnet, then what kinds of magnetic pump magnets?
What are the main types of magnetic steel for magnetic pumps?
According to customer's requirements, the main magnets used in magnetic pump are ferrite, NdFeB, samarium and cobalt. At present, the use of samarium and cobalt is not much, mostly replaced by neodymium, iron and boron.
What shape is the magnetic steel of the magnetic pump?
The magnets on the magnetic pump are in the shape of tiles (ferrite and NdFeB). They are mounted on internal and external magnets respectively. There are also heterosexual ferrite multipole magnetic rings. Eight poles are common.
We often come into contact with many Nd-Fe-B tiled magnets customers here. Not every customer tells us about their application, but also understands that some customers do not know much about magnets. Today, I will briefly talk about the general pump motor used more ferrite multi-pole magnetic ring and injection-moulded ferrite, but also used to bond Nd-Fe-B. When the motor drives the external magnetic rotor (i.e. the external magnetic steel), the magnetic line passes through the isolation sleeve, which drives the internal magnetic rotor (i.e. the internal magnetic steel) and the impeller to rotate synchronously, and completely encloses the medium in the static isolation sleeve when it flows, so as to achieve the purpose of pumping the medium without leakage.
Finally, what I want to say is that we should pay attention to confirming the temperature resistance of magnet steel with the manufacturer of magnet steel when choosing and purchasing magnet steel. Neodymium, iron and boron are hard and brittle, so we should pay attention to collision damage when using them.
So the magnet steel of the magnetic pump can be customized.
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Topic:Reasons for breakdown of concrete pump truck?
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Reasons for breakdown of concrete pump truck? (29th Apr 19 at 1:41am UTC)
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In the course of concrete pump truck commutation, concrete flow often appears obvious phenomenon of flow-break-flow, which is commonly referred to as the phenomenon of flow-break.
There are three reasons for the phenomenon of flow:
When the main cylinder runs close to the end of the stroke, it sends out the reversing signal to the reversing cylinder, and then the main system oil circuit changes direction. The main cylinder moves in the opposite direction, which takes at least 0.2 seconds.
(2) When concrete is sucked into a concrete cylinder, the suction efficiency is usually only 85%-95%. Inevitably, a small section of air will be sucked in, which will be a short empty journey.
(3) When reversing, the pressure of the concrete inhaled from the concrete cylinder rises when it is exported, which has certain compressibility, and this is also a short empty journey. Because of the commutation and two empty travel time, the concrete pump truck appears, so the concrete pump truck has the problem of break-off in the process of concrete pumping. Continuous pumping of concrete is realized before the concrete pressure in the pipeline and distribution valve is fully released, so as to minimize the backlash of concrete pressure released in the pipeline and distribution valve during the process of concrete separation due to break-off and reversal. By choosing and setting the control mode of the main oil pump, the problem of interruption flow in concrete transportation can be effectively solved, the reversing impact can be reduced, and the pumping performance of concrete can be greatly improved.
At present, concrete pump trucks generally suffer from concrete cut-off phenomenon at the moment of pump commutation. This phenomenon has two major hazards. One is easy to cause concrete segregation, some concrete dewatered into dry hard concrete, which causes blockage and cut-off phenomenon. This is especially true when pumping concrete with low slump.
The second is the release of concrete pressure in the pipeline and distribution valve at the moment of reversal, which will impact the hydraulic system of concrete pump, cause damage to some parts and increase energy loss. Cut-off is very harmful to vertical upward pumping, especially to the height above 50m.
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Topic:Professional Essays for Your Task
Chris
Guest
Re: Professional Essays for Your Task (25th Apr 19 at 1:18pm UTC)
I may need your service soon. Do you write blogs for a website as well?
Chris | https://www.hvacproscolumbia.com

Topic:Diesel Engine Pump Configuration
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Diesel Engine Pump Configuration (18th Apr 19 at 2:21am UTC)
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1. Power: Dowitz and Weichai
2. Main oil pump: Kawasaki
3. Main Cylinder: Domestic, American Parker for Seals
4. Hydraulic Valves: Domestic
5. Electrical appliances: Schneider and Omron are the main appliances
6. Equipped with High and Low Voltage Conversion
7. Rubber hose joint: Gates, USA
8, 150 metre pipeline, spare parts, Toolkit
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Topic:Working Principle of Hand Oil Pump
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Working Principle of Hand Oil Pump (16th Apr 19 at 3:10am UTC)
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The reciprocating motion of the plunger in the plunger sleeve completes the oil suction and pressure of the fuel injection pump. When the plunger is located in the lower part, the two oil holes on the plunger sleeve are opened, the inner cavity of the plunger sleeve is connected with the oil passage in the pump body, and the fuel is quickly filled into the oil chamber.
When the cam is crowned on the roller of the roller body, the plunger rises. From the beginning of the plunger upward movement until the oil hole is blocked by the upper end of the plunger. During this period, due to the movement of the plunger, the fuel is squeezed out of the oil chamber and flows to the oil channel. So this lift is called a pre-trip. When the plunger blocks the oil hole, the oil pressure process begins. When the plunger goes up, the oil pressure in the oil chamber rises sharply. When the pressure exceeds the spring elasticity and the upper oil pressure of the oil outlet valve, the oil outlet valve is jacked out and the fuel is pressed into the fuel pipe and sent to the injector.
The time when the oil inlet hole on the plunger sleeve is completely blocked by the upper end face of the plunger is called the starting point of theoretical oil supply.
When the plunger continues to move upward, the oil supply also continues. The oil pressure process lasts until the helical inclined edge of the plunger lets the plunger sleeve return to the oil hole. When the oil hole is opened, the high-pressure oil flows back to the oil channel of the pump through the longitudinal groove on the plunger and the oil return hole on the plunger sleeve. At this time, the oil pressure of the plunger sleeve chamber decreases rapidly, and the oil outlet valve falls back to the valve seat under the action of the oil pressure in the spring and high-pressure tubing. The injector immediately stops injecting oil. At this time, although the plunger continued to ascend, but the oil supply has been terminated.
The time when the upper return hole of the plunger sleeve is opened by the oblique side of the plunger is called the theoretical oil supply terminal point.
From the above process of oil absorption and pressure, it can be seen that in the whole process of plunger upward movement, only the middle stroke is the process of oil pressure, which is called the effective stroke of plunger.
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Topic:Introduction of forced circulation pump
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Introduction of forced circulation pump (11th Apr 19 at 3:39am UTC)
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The forced circulation pump is operated by the horizontal thrust in the direction of the pump shaft generated by the rotation of the impeller, and is therefore also called the horizontal axial flow pump. Mainly used in the evaporation of caustic soda, phosphoric acid, vacuum salt, lactic acid, calcium lactate, alumina, titanium dioxide, calcium chloride, ammonium chloride, sodium chlorate, sugar, molten salt, paper, wastewater, etc. Concentration and cooling, in order to improve the production capacity of the equipment, increase the heat transfer coefficient of the heat exchanger for forced circulation. Therefore, it can also be called an axial flow evaporation circulating pump.
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Topic:Pipe pump features
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Pipe pump features (9th Apr 19 at 3:09am UTC)
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1. Smooth operation: the absolute concentricity of the pump shaft and the excellent dynamic and static balance of the impeller ensure smooth operation and no vibration.
2, dripping water does not leak: different materials of hard alloy sealing, to ensure that no leakage of different media delivery.
Low noise: The pump under the support of two low-noise bearings runs smoothly. Except for the weak sound of the motor, there is basically no noise.
3, the failure rate is low: the structure is simple and reasonable, the key part adopts the world-class quality; supporting, the whole machine has no troubles working time greatly improved.
4, convenient maintenance: replacement of seals, bearings, simple and convenient.
5, the land is more provincial: the exit can be left, right, up and three directions, easy to install and save the pipeline, saving space.
6. Low noise: The pump under the support of two low-noise bearings runs smoothly. Except for the weak sound of the motor, there is basically no noise.
7. Simple structure, convenient maintenance and low price.
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Topic:SJM series mechanical diaphragm metering pump
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SJM series mechanical diaphragm metering pump (27th Mar 19 at 2:00am UTC)
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The metering pump is a reciprocating special volume pump capable of continuously and quantitatively conveying corrosive and non-corrosive liquids without solid particles in a range of 0~100% according to the needs of various process flows. Metering pumps, hydraulic diaphragm metering pumps and mechanical diaphragm metering pumps. The product implements the GB/T7782-2008 metering pump standard.

SJM series mechanical diaphragm metering pumps are widely used in petroleum, chemical, water treatment, environmental protection, food, light industry, paper, pharmaceutical, printing and dyeing, metallurgy, mining and other industries.
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Topic:[old object] stove
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[old object] stove (22nd Mar 19 at 8:56am UTC)
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   The winter in Wuhan is very cold. In the era when there is no air conditioner and heater, a coal-burning stove will be set up at home. The stove is iron and the body is black. The whole stove is cylindrical, the lower part is slightly thicker, the four feet are a whole that extends directly from the barrel, and the four feet are thick circular iron pieces, 3, 4 mm thick, 3, 4 cm high. Below the front of the stove is a square-opened furnace door that is used to smash the ash. The upper part of the stove is convex toward the back, flush with the furnace surface but has a raised circle for fixing the chimney, and the middle of the circle is empty to the furnace. The chimney is usually a cylinder made of white iron, which is about the same thickness as an adult's arm. It is divided into three sections. The two straight sections are joined together by a right-angled connection. The lower part of the chimney is connected to the stove, and the horizontal part is from the wall or The opening in the window sticks out. The furnace chamber is divided into two layers. The upper layer is a cavity slightly higher than the three honeycomb coals. A thick iron cover with a small hole in the middle is placed on the top, and only the tongs can be used. (A kind of iron tool like a large scissors, scissors 仞Part is very long, but there is no 仞) pick and place. The upper part of the furnace chamber is connected to the rear of the furnace by a rear opening, and finally communicates with the chimney. This part should be passed through the tongs to prevent it from being blocked by the chimney ash. The upper and lower parts of the furnace chamber are separated by some equidistantly placed iron rods, so that the coal ash falling off the honeycomb coal can fall below and exit from the furnace door.
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Topic:Micro vacuum pump
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Micro vacuum pump (22nd Mar 19 at 3:32am UTC)
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The micro vacuum pump refers to one of the air suction nozzle and the exhaust nozzle which are provided one by one, and can continuously form a vacuum or a negative pressure at the inlet; a micro positive pressure is formed at the exhaust nozzle; the working medium is mainly gas, and the volume is small. An instrument.
The basic principle of the micro vacuum pump: the circular motion of the motor, the diaphragm inside the pump is reciprocated by mechanical means, so that the air in the pump chamber of the fixed volume is compressed and stretched to form a vacuum (negative pressure), at the pump suction port. At the atmospheric pressure, a pressure difference is generated. Under the action of the pressure difference, the gas is pressurized (sucked) into the pump chamber and discharged from the exhaust port.
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Topic:Thin-walled stainless steel pipe
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Thin-walled stainless steel pipe (21st Mar 19 at 2:57am UTC)
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Thin-walled stainless steel pipes and fittings for building water supply contain more than 12% chromium (Cr), and ferroalloys with austenite crystal structure properties formed by adding other metal elements as required. Adding nickel (Ni) can improve the ductility and toughness of the material, make it easy to form and bend. The weldability of the material can be improved by reducing the content of carbon (C). Adding molybdenum (Mo) or manganese (Mn) can improve the pitting and seam corrosion resistance of the material.DIN 1.2510 Cold Work Tool Steel Flat
After the reaction of chromium with oxygen and oxidant in thin-walled stainless steel pipes, a thin and tough passivation film Cr2O3 is formed on the surface, which acts as a protective film against corrosion.
If stainless steel pipes and fittings are treated by impurity removal, acid pickling and passivation process, the thickness of Cr2O3 will be increased and the uniformity of compactness will be enhanced. Polished stainless steel pipes and fittings will not only eliminate surface defects, but also make passivation film more delicate and compact, so as to reduce the probability of spot corrosion. At the same time, after finishing, the inner wall of the pipe is smooth and the friction resistance is small, which further improves the hydraulic performance of the pipe and saves consumption.304 stainless steel round rod
Stainless steel pipe has high strength, strong corrosion resistance, good toughness, excellent vibration and shock resistance, low temperature is not brittle, water quality can be ensured in the process of water conveyance, and durable and renewable for decoration materials.High Quality Ms Square Pipe Price

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Topic:nickel
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nickel (15th Mar 19 at 3:15am UTC)
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Nickel, a hard ductile ferromagnetic metallic element similar to silver, is highly polished and corrosion resistant. Nickel belongs to ferrophilic elements. Nickel is the highest in the earth's core and is a natural ferronickel alloy. In the crust, the nickel content of mafic rocks is higher than that of silica-alumina rocks. For example, peridotite contains 1000 times more nickel than granite and gabbro 80 times more nickel than granite.
On October 27, 2017, the World Health Organization International Agency for Research on Cancer published a list of carcinogens for preliminary reference. Nickel compounds are listed in a class of carcinogens.
Cold rolled 2mm thick stainless steel sheet 304
Cobalt, nickel and alloy powders containing 66-67% nickel, 13-16% chromium and 7% iron were implanted into the list of 2B carcinogens.
Meteorites contain iron and nickel, which were used as good iron in the early days. Because the metal does not rust, it is considered silver by the indigenous people of Peru. An alloy containing zinc and nickel, called white copper, was used in China in 200 BC. Some even extend to Europe.polish) seamless pipe SS 310 SCH 40
In 1751, Alex Fredrik Cronstedt, who works in Stockholm (the capital of Sweden), studied a new metal, nickel arsenate (NiAs), from Los in Helsinland, Sweden. He thought it contained copper, but he extracted a new metal, nickel (nickel), which he announced and named in 1754. Many chemists believe that it is an alloy of cobalt, arsenic, iron and copper - these elements occur in trace amounts of pollutants. It was not until 1775 that pure nickel was produced by Torbern Bergman, which confirmed that it was an element.
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