Production process, processing flow and quality control of ceiling lampshade

Ceiling light is the most commonly used lighting in the home. The living room, bedroom, dining room, kitchen, bathroom and other home places must use ceiling lamps. The dosage is very large. The ceiling lamps are also the main business category of many dealers. It can be said that users The dealers and other attention to the ceiling lamps are no less than our manufacturers. The variety of lampshades is an important factor affecting the purchase of ceiling lamps. Let's take a look at how the ceiling lampshade is “refined”! There are pictures with the truth!
1The raw material of the ceiling lampshade
This is the raw material of the ceiling lampshade. The commonly used materials are 372 Acrylic and PVC stepping. The thickness is generally 2.0mm, which not only guarantees the quality, but also does not affect the light transmittance due to excessive thickness. 372 Acrylic light transmittance of about 70%, more households; PVC stepping on the light transmittance of about 55%, not easy to rotten, more used in engineering!
2 silk screen
After selecting the materials, the first step to make the lampshade: silk screen! Print the white oil through the engraved pattern plate! Many lampshades have complex shapes and colors, and one color is a process! It is necessary to repeat the silk screen once, very hard!
3 pattern screen
These are pattern screens, and some ceiling lamp shades are more complex and have multiple colors. This requires engraving multiple screens, engraving one, usually tens of dollars, think about so many styles, to engrave How many sheets, test the strength of the factory! ! !
4 screen
Look! Look! How many screens does this have! There are names on the version! Doing industry depends on accumulation!
This is a printed one. Is it a little feeling of a ceiling light? ! Don't worry, keep looking down...
6 silk screen finished
After silk screen printing, it is necessary to dry and dry!
8 blower cover
After the silk screen is printed, it is necessary to enter the key part of the lampshade - blow the lampshade! The picture above is the equipment for making the lampshade---blowing machine! The silk-printed board is softened first in the oven with the temperature adjusted, then placed in the mold, the mold is closed, and the lampshade becomes the mold! In the picture above is the classic “Fengwei” mold, which is completed in a few seconds! It is worth noting that the temperature of the oven should be controlled well, because the heating temperature of each lamp cover material is different, low, and can not be formed; if it is high, the lampshade will be deformed, and the loss will be caused by small details!
Can not be formed
This is a classic round shade! Can do all white, printing, caliber 230mm, 300mm, 350mm and many other.
10 mold
This is a variety of molds, each size requires a set of molds, a set of molds to thousands of pieces, very test the strength of the factory!
11 machines
A Taiwanese machine! There is no problem with mass production!
12 blowing machine
If it's a simple shape, those ordinary blower machines will do. But if the lampshade is high-side, or a large stretch-type lampshade, you need a machine with higher performance! As shown in FIG!
The process is also to first screen the screen mask, soften it in the oven with the temperature set, and then put it on the workbench!
Open the switch and the mold closes! Inflatable!
After a few seconds, molding! The mold is separated, showing the shade of the lamp!
Look! success! Take out the lampshade!
Upper moldSide mode
To make such a large stretch and high-side lampshade, the mold is more complicated, and the upper and the side molds are divided, and the set is close to tens of thousands!
19 blown lampshade
This is a blown good shade, classic phoenix! The following will also be trimmed! Only completed!
Just pass this machine, except the side!
These are the well-made lampshades, plastic bags, packed, and dust-proof.
A variety of styles!
A variety of styles! To meet the diverse needs of people, many new models are already in the works!
LED ceiling lamp chassis
This is the chassis, light source and power supply for LED ceiling lights! Together with the lampshade, it can be composed as a finished ceiling lamp. LED light source, the most used in the industry is Taiwan's chip or Sanan chip, the price is very high, not as expensive as imported, not as low quality as low-end and recycled products, we use this!
老化装置
Aging equipment! LED lights are semiconductors and electronic products. It is necessary to carry out aging tests to detect whether there are any solder joints, dead spots, etc. Otherwise, the performance is unstable, and there may be no difference in a short time. However, after a few months, the quality problems will continue. appear! Our aging test, after hundreds of 160 to 260V high and low voltage impact test, should not be a problem for household 220V voltage, quality assurance!
装入彩盒内包装
After plastic molding, put it in the color box! carry out!
A simple ceiling lampshade has to go through so many processes and requires a lot of labor to do it! It embodies the hard work of many workers, and this is the value of labor! The finished ceiling lamp requires more energy and labor to become a product that satisfies the user, a product that the dealer is satisfied with, and a work that the engineer is satisfied with! The product requires the deep participation of the user. Such a product is what the user really likes and needs!

Piezoelectric Discs For Flowmeter Sensor

Piezoelectric ceramic disc

Quick delivery

High performance

Application: flow meter measurement


There are many kinds of USF used in closed pipeline according to the measuring principle, and the most commonly used are propagation time method and Doppler method. Among them, time difference ultrasonic flowmeter is used to measure fluid flow by the principle that the time difference of sound wave propagating downstream and countercurrent is proportional to the velocity of fluid flow. It is widely used in raw water measurement of rivers, rivers and reservoirs, process flow detection of petrochemical products, water consumption measurement of production process and other fields. According to practical application, time-difference ultrasonic flowmeter can be divided into portable time-difference ultrasonic flowmeter, fixed time-difference ultrasonic flowmeter and time-difference gas ultrasonic flowmeter.


Ultrasonic flow-meters use at least two transducers aligned so that ultrasonic pulses travel across the flow of liquid or gas in a pipe at a known angle to the flow.



Technical data:

Electromechanical coupling coefficient Kp: > 0.62

Dielectric Loss tg δ: <2%



Nominal Piezo discs for ultrasonic flowmeter:

OD14.2*1MHz PZT-51

OD14.6*1MHz PZT-51

OD15*1MHz PSnN-5

OD15*2MHz PSnN-5

OD20*1MHz PSnN-5

OD20*2MHz PSnN-5

OD15*1MHz PZT-51

OD15*2MHz PZT-51

OD20*1MHz PZT-51

OD20*2MHz PZT-51

Size, Frequency and Electrode on request.


20x2img 2019


28x1img 2040

Piezoelectric Ceramic Disc,Piezoelectric Disk Flow Meter,Piezoelectric Flow Sensor,Piezo Discs Flowmeter

Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com