What should you pay attention to when buying LED high bay lights?

 

What should you pay attention to when buying LED high bay lights?

 

LED high bay lights are LED lamps used in many factories and mines in production areas. Generally, lamps and lanterns will be evenly arranged above or on the side walls of the work site to illuminate the entire work surface. Therefore, it is necessary to use higher power incandescent lamps, tungsten halogen lamps, high intensity gas discharge lamps or a higher number of fluorescent lamps. Most of the high bay lights also belong to this category. General lighting has higher requirements on the distribution of light, and two types of light distribution, direct lighting type and semi-direct lighting type, are widely used.

 

Of course, there are many things to pay attention to when purchasing LED lights. Today, Zhongshan Xinpengda Lighting Factory will explain to you.

 

First, look at the heat dissipation structure

 

Generally, the materials used for lamps are aluminum profiles, metal sheets and copper columns. When we turn on the lamps, we can observe whether there is a temperature rise. It is impossible to have no temperature. It means that heat cannot be dissipated, but the temperature rise should not be too high. Degree is appropriate.

 

Second, look at the actual needs

 

Different occasions have different requirements for lamps. Industries such as coal, petroleum, chemical and other industries need to consider not only whether the lighting needs can meet the requirements, but also the factors of dustproof and waterproof lamps, and even the explosion-proof requirements. Such enterprises need to consider whether the product meets the requirements of national quality standards, whether it has passed the explosion-proof certification and other factors when choosing lamps and lanterns.

 

  1. Look at the light source part

 

The light source part mainly depends on whether genuine chips are used, such as Purui, Epistar, Cree, etc. At the same time, the light source part and the power supply part should have good waterproof function.

 

Fourth, look at power, illumination and color temperature

 

This is particularly professional. When purchasing LED high bay lights, the power should be selected according to the actual lighting area. High power will cause waste of electricity resources, and low power will not meet the lighting needs. At the same time, conditions such as illumination and color temperature are also very important. The production line requires high resolution, such as the textile industry, which requires high resolution lamps. It is recommended to clearly inform the shopping guide of your actual needs when purchasing.

 

Of course, the most important thing to choose LED lights is to choose a guaranteed business. Zhongshan Xinpengda Lighting Factory was established in 2014. It is located in the economically developed Pearl River Delta Forte, an ancient town in Zhongshan known as the Lighting Capital of China. The main products are various power LED wall washers, flood lights, flood lights, digital tubes, point light sources, street lamp heads, tunnel lights, high bay lights, underwater lights, buried lights, etc.

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What are explosion-proof lamps and how to choose explosion-proof lamps?

What are explosion-proof lamps and how to choose explosion-proof lamps?

 

  1. What are explosion-proof lamps?

 

As the name suggests, this type of lamp not only has a certain lighting effect, but also has a certain explosion-proof function. It is widely used in inflammable and explosive places such as construction sites, chemicals, gas stations, oil fields, mines, various military sites, transfer stations, etc. Explosion-proof lamps are special industrial lamps, which can ensure the safety of users on the premise of ensuring the quality of lighting. The explosion-proof lamp shell has strong corrosion resistance and good sealing performance, and is a new type of LED energy-saving lamp source product. The shell of the explosion-proof lamp is made of lightweight aluminum alloy die-casting, and the surface is treated with high-voltage electrostatic spraying, which can be used as a lighting emergency lamp.

 

  1. How to choose explosion-proof lamps

 

  1. Color temperature selection

 

When we buy, we should choose the appropriate color temperature according to its use place. The color temperature mentioned here actually refers to the color of its light. Generally speaking, the color temperature of explosion-proof lamps needs to be selected according to the season and environment. Its color temperature scale is 2700-6500K. If the value is smaller, it means that it is more inclined to yellow light, and vice versa, it is inclined to blue and white light. Yellow light is usually used in living rooms, bedrooms, dining rooms or in low-light situations, and can play a role in creating a warm and comfortable feeling. The white light is brighter and clearer, which is suitable for use in summer, study, kitchen and other places.

 

  1. Color rendering options

 

It actually refers to the original color of the object under the illumination of the lamp. Its value is between 0 and 100. Now the color rendering specification of the explosion-proof LED bulbs on the market is greater than 75. For the sake of safety, it is recommended to We still choose more than 80, which can help reflect the authenticity of the color.

 

  1. Luminous flux selection

 

Even if the same lamp is used in different environments, the lighting effects presented by them are different. In order to ensure the safety of our use, it is recommended that you should pay attention to its luminous flux when purchasing explosion-proof lights. The luminous flux refers to its brightness. If the place of use is large and the light is dark, we need to install a few more explosion-proof lights; if the place of use is small and the light is sufficient, 1-2 explosion-proof lights are needed.

 

What are explosion-proof lamps? As a special product, it is good to use explosion-proof lamps, but its appearance design is not so exquisite, which may affect the beauty of interior decoration. How to choose explosion-proof lamps? If you want to choose explosion-proof lamps, it is better to decide according to its practicality and matching style.

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Selection of LED light drive power

Selection of LED light drive power

The choice of LED lamp power supply is mainly considered from the output voltage, output current, and corresponding power wattage of the power supply. LED power supply generally has two types of constant current source output and constant voltage source output. First, for the LED power supply output by constant current source, we mainly consider its output voltage. For LED power drivers that output the same current, its output voltage It is also different, so when choosing a constant current LED power supply, it should be consistent with the working voltage of the LED lamp. For example, for a constant current LED power supply with a rated current of 200 mA to 300 mA, its output voltage is between 9V and 13V. The range between 10V and 25V, the range between 24V and 42V, the range between 45V and 63V, etc., so we choose this power supply to consider its output voltage range.

 

Similarly, for the constant voltage source LED power driver, under the same output voltage, its output current is also different, so when we choose LED power supply, we need to consider its output voltage or current according to different types of LED power supply. . In addition, the power range of the LED power supply should also be considered. If the power range is selected incorrectly, the LED lamp beads will be burned, or the LED lamp will flicker.

 

For simple LED lamps, it is often used to reduce the voltage through a simple RC resistance-capacitor step-down link, and then arrange it through a diode and add a suitable current-limiting resistor to drive about a dozen high-brightness LED lamp beads. Yes, the lamp beads here can be connected in parallel or in series, but the current limiting resistor must be selected well. For example, the mini LED desk lamp I made before is a power supply formed by this method. I used 12 LED lamp beads in parallel, and used a 2.4 ohm two-watt resistor as the current limiting resistor, and the effect was very good.

 

The LED light has high brightness and saves electricity. Now in order to make LED lights more humane, we can also choose LED power supply with dimming function, such as LED dimming power supply using thyristor, which has high adjustment accuracy and efficiency. If you need to install in a small space, you can choose this LED power supply with dimming function.

 

Some LED power supplies with dimming function are made of MOS tubes, which are also called MOSFET dimmers. It can not only control the on and off of LED lights, but also control the LED lights. Like the LED dimmable power supply made of silicon, the phenomenon of invisible lighting occurs. This kind of LED dimmable power supply can be selected for a single LED lighting lamp or occasions with a small load.

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Types and advantages of fan blades of centrifugal fans

Types and advantages of fan blades of centrifugal fans

 

 

Centrifugal fan is only one of many fan products, it has good performance, which is also closely related to the design of its blades. The same centrifugal fan is configured with different blade types to meet different application requirements.

 

  1. Backward curved fan blades

 

This kind of blade can also be divided into single-plate type and wing type. The backward-curved single-plate blade has large structure size, low pressure coefficient and high efficiency. Therefore, the dynamic pressure accounts for a small proportion of the total pressure. Suitable for heavy wear, i.e. relatively high price. Backward curved wing blades have the same characteristics and should be the most efficient.

 

  1. Forward curved blades

 

The blade structure of the forward curved blade is generally smaller, the pressure coefficient is higher, and the efficiency is generally lower. The dynamic pressure accounts for a large proportion of the total pressure, but it has the advantage of low price.

 

  1. Radial fan blades

 

In terms of size, the radial fan blades are medium in size; in terms of performance, the pressure coefficient is high, the efficiency is high, and the dynamic pressure accounts for a large proportion of the total pressure, which is suitable for occasions with severe wear; there is no advantage in price.

 

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The difference between the cooling fan ball bearing

The difference between the cooling fan ball bearing

 

The cooling fan has single ball and double ball bearings, which can be selected according to different needs. The following will introduce the difference between the two bearings.

 

single ball bearing

 

The single ball bearing adopts the form of sliding friction and ball friction. One ball bearing and oil-impregnated bearing are used to reduce the cost of the double ball bearing. The rotor and the stator are lubricated with balls, and lubricating oil is added. The service life is about 30,000-40,000 hours. .

 

Advantages: longer life than oil-impregnated bearings, stable operation, low cost

 

Disadvantages: Although the noise is small, the noise will increase for a long time

 

Double ball bearing

 

The double ball bearing is a high-end bearing. It adopts the form of rolling friction. There are two balls. The bearing has several tiny steel balls around the axis. When the fan blade or the axis rotates, the steel balls rotate along with it. Because it is a sphere, the friction force will be reduced. It is relatively small, and will not leak oil. It has a long service life and a service life of about 50,000-70,000 hours. It has good performance, high speed and large air volume.

 

Advantages: good sealing performance, long service life

 

Disadvantage: high cost

 

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Several factors affecting the embrittlement of speed-regulated cooling fans

Several factors affecting the embrittlement of speed-regulated cooling fans

 

The embrittlement of the speed-adjustable cooling fan means that it is easy to break. If the equipment frame or fan blade is broken, the fan is basically scrapped. It is prone to accidents when it is broken during work, and it has to be taken seriously. The embrittlement of the speed-regulated DC cooling fan is caused by the following factors: long-term operating temperature, fan speed ratio, power switching frequency, rotor dynamic balance of the fan motor rotor, fan structure direction and dust or dirt in the natural environment.

The brittleness of the speed-adjustable cooling fan means that it is easy to break. If the equipment frame or fan blade is broken, the fan is basically scrapped. It is prone to accidents when it is broken at work, and it has to be taken seriously. The embrittlement of the speed-regulated cooling fan is caused by the following factors: long-term operating temperature, fan speed ratio, power switching frequency, rotor dynamic balance of the fan motor rotor, fan structure direction and dust or dirt in the natural environment.

 

  1. Working temperature: The temperature of the fan office environment will endanger the evaporation and viscosity of the grease, thus endangering the service life of the power cooling fan.

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  1. Fan speed ratio: The AC coling fan speed ratio is inversely proportional to the service life. The higher the speed ratio, the higher the temperature caused by the friction of the grease liquid, which will accelerate the evaporation of the grease and reduce the service life of the bearing.

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  1. Power switching frequency: When the oil bearing starts, no oil wedge is produced, and the shaft core and bearing are still in contact with metal materials, which will cause slight damage. Therefore, frequent power switching can also endanger bearing life.

 

  1. The rotor dynamic balance of the fan motor rotor: the better the rotor dynamic balance of the fan Blower motor rotor, the smaller the centripetal force caused by the same speed ratio, the less damage to the bearing, and then the service life of the bearing will increase.

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  1. Fan structure direction: Due to the difference in the fan structure field, the influence of force on the bearing will also be different. In the basic theory, the force of the motor rotor on the bearing has minimal ground stress when the direction of the deceived gravity is parallel to the bearing.

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  1. Dust or dirt from the outside: After entering the bearing, the dust in the air will block the air intake system of the bearing, destroy the original dynamic pressure oil film and lubrication of the oil bearing, and cause failure. If the external dirt is chemical fibers or insects, it will also hinder the rotation of the centrifugal impeller.

 

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The prospect of automobile parts processing

The prospect of automobile parts processing

The processing and manufacturing of automobile parts almost involves all sectors of society, especially in industrial manufacturing. Almost the most advanced methods are first applied to automobiles. Therefore, the automobile industry is the embodiment of the strength of a country’s overall manufacturing industry, and can only be developed after the society has developed to a certain extent. The automobile is a kind of transportation tool widely used in modern life. It is changing our life. In order to make the automobile beautiful and safe, flanging plastic parts are more widely used. What are the processing flow of auto parts

1、 Processing process of auto parts:

3D Printing Automotive Parts processing technology casting is a production and manufacturing method that molten metal materials are poured into the cavity of the casting mold, cooled and solidified to obtain commodities. Solid model forging is a production mode in which metal material blanks are put into the die chamber of the forging die to bear the impact or burden.

Cold stamping cold stamping die or sheet metal stamping automobile parts is a production mode that enables metal materials and sheets to be cut or formed by bearing force in stamping automobile parts.

Welding Electric welding is a production method that combines the partial heating or simultaneous heating and stamping of two metal materials. Metal material turning production processing is to use milling cutter to drill metal material rough embryo step by step; A production method that enables products to obtain the required appearance, specification and roughness.

The heat treatment process is a way to change the organizational structure of solid steel by reheating, insulating or cooling it to meet the application standards or technical standards of parts.

Installation refers to connecting various parts (anchor bolt, nut, pin or lock catch, etc.) to each other and form components, and then connecting various components to form a complete vehicle according to certain regulations. Whether the medical parts are composed of components or the components are composed of a whole vehicle, they need to be coordinated and related according to the requirements of the design drawing, so that the components or the whole vehicle can achieve the set characteristics. For example, when installing the gearbox on the clutch housing, make sure that the axis of the gearbox keying shaft points to the axis of the crankshaft. This kind of core method is not adjusted by the installation workers (millers) during assembly, but is ensured by the design scheme and production manufacturing.

CNC Machining Automotive Parts processing refers to the units that constitute the whole auto parts processing and the products that serve the auto parts processing. In recent years, the vigorous development of the global auto industry has driven the market prosperity of the auto parts processing industry. What is the prospect of auto parts processing?

2、 The prospect of auto parts processing:

The automobile parts processing industry provides corresponding parts and components for the automobile manufacturing industry, including stamping products, injection molding components, etc. It is the basis for the development of the automobile industry and an important part of the automobile industry chain. With the development of globalization of the world economy and the improvement of the level of specialization of the automobile industry, the automotive parts processing industry plays an increasingly important role in the automobile industry.

After years of accumulation and development, auto parts processing enterprises have continuously improved production processes, reduced production costs, and improved product quality. Their technical level and production management level have been greatly improved, forming a number of powerful parts manufacturing enterprises. Some parts manufacturing enterprises in China have entered the global procurement system of vehicle manufacturers and have strong market competitiveness.

Die Casting Automotive Parts processing can be divided into vehicle supporting market (i.e. OEM market) and after-sales maintenance market (i.e. AM market) according to the different time stages when they enter the whole vehicle. At present, about 80% of the auto parts processing market belongs to the vehicle supporting market, which has formed the growth triangle (represented by the main vehicle companies: SAIC), central China (represented by the main vehicle companies: Dongfeng), the three eastern provinces (represented by the main vehicle companies: FAW), southwest China (represented by the main vehicle companies: Chang’an), Beijing Tianjin (represented by the main vehicle companies: BAIC) The Pearl River Delta (represented by major vehicle companies: GAC) has six major vehicle and medical parts processing industrial clusters.

The development of  Automotive Stamping Parts processing market is facing great opportunities and challenges. In terms of market competition, there are more and more automobile parts processing enterprises. The market is facing the asymmetry of supply and demand. The automobile parts processing industry has a strong demand for further reshuffle. However, there is still a large space for development in some automobile parts processing market segments, and information technology will become the core competitiveness.

Through in-depth investigation and analysis, investors can fully grasp the current global and domestic macroeconomic situation of the industry, specifically analyze the market segment where the product is located, and process Automotive Forging Parts Cn to judge the overall market supply and demand trends and industry prospects of the processing industry; Define target market, analyze competitors, understand product positioning, grasp market characteristics, explore price rules, innovate marketing means, propose market entry and market development strategies for auto parts processing industry, and put forward feasible suggestions for future development of the industry. Shenzhen Noble Intelligent Manufacturing Technology Co., Ltd. is a Sino British joint venture awarded the qualification of “National High tech Enterprise” by the government. The company has two major directions of intelligent manufacturing business and product business. The intelligent manufacturing business is specialized in providing customers with project support services including parts processing and manufacturing.

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Application of DC cooling fan in various fields

Application of DC cooling fan in various fields

 

Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

DC cooling fans have a wide range of applications, but cooling fans are generally installed inside the machine. Now, most devices will generate heat after running, and they need cooling fans to dissipate heat. The application of cooling fans in various fields is described in detail below.

Cooling fans are generally used in printers, fax machines, banner machines, medical equipment, automotive electronics, power equipment, electric vehicle chargers, communication/communication cabinets, frequency converters, transformers, industrial control equipment, stage lighting (light source cooling), new energy ( Cooling fans are required for equipment such as batteries into cabinets), engine cooling, instruments and meters.

 

The following is an example of the application of automobile cooling fans in automobiles

 

The replacement of automobiles clearly marks the changes of this era, and each generation of changes has higher and higher requirements for heat dissipation. From the initial heat dissipation, to the need to reduce noise while satisfying heat dissipation, and then to develop, not only reduce noise and heat dissipation, but also need to be able to control heat dissipation in real time, that is, to support PWM intelligence fan speed regulation cooling fans.

 

  • During the operation of the car, heat is continuously generated, and the components around the combustion chamber (cylinder liners, cylinder heads, valves, etc.) must be properly cooled. The automobile cooling system is composed of radiator, thermostat, water pump, Communications,cylinder water channel, cylinder head water channel, fan, etc. The radiator is responsible for th,e cooling of circulating water. Its water pipes and heat sinks are mostly made of aluminum materials. The aluminum water pipes are made of flat shape, and the heat sinks are corrugated. The heat dissipation performance should be taken into account. The installation direction is perpendicular to the air activity direction. It is possible to achieve smaller wind resistance and higher cooling efficiency.

The coolant flows inside the radiator core and the air passes outside the radiator core. The hot coolant is cooled by dissipating heat to the air, and the cold air is warmed by receiving heat from the coolant, so the radiator is a heat exchanger. The cooling fan is installed in the radiator to blow away the heat in time to achieve the whole cooling effect.

 

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