Tongda Analysis Equipment Does Not Damage The Equipment

Posted by tongdaedith on Jun 13, 2020 in News

Some customers have been exposed to X-Ray inspection equipment, but some of them have a certain one-sided understanding of X-Ray inspection equipment, and they do not know X-Ray inspection equipment very well. The following Tongda analysis machine will explain to you which workpieces are detected by the X-Ray inspection equipment in the industry, and which fields are mainly used.

x-ray testing equipment

X-Ray inspection equipment is usually used in such industries in the industrial field. Such as electronic products, electronic components, semiconductor components, connectors, plastic parts, BGA, LED, IC chips, SMT, CPU, heating wires, capacitors, integrated circuits, circuit boards, lithium batteries, ceramics, castings, medical, food, etc. .

In the electronic product components, it mainly depends on whether the welding point is disconnected, short-circuited, and whether the welding is normal;

In BGA, LED, IC chip, SMT and other applications, it is usually to see whether the interior of these workpieces is deformed, whether the gold wire is normal, de-soldering, air welding, tin soldering, air bubbles and other defects;

In ceramics and castings, it is mainly to see whether there are bubbles, cracks, slag, etc. in the workpiece; in the food industry, it is mainly to detect whether there are foreign objects, etc.

In some industries, the process of Tongda analysis equipment testing is also called nondestructive testing.

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How To Better Use Flat Screen Printer

Posted by lichengprintingmachine on Mai 15, 2020 in News

Licheng is a professional manufacturer of R & D screen printing machines, pad printing machines, and various printing equipment. The following is a brief introduction about the quality improvement of Flat Screen Printer:
In addition to the choice of plate-making materials, the key to the advancement of screen printing products lies in the rationality of screen printing plate production technology. Nowadays, screen printing plates are mostly made by hand, and there is even a need for the advancement of plate-making technology.
L Selection of screen mesh
The choice of screen mesh number should be decided according to the printed pattern and the request for the pattern. If the pattern is larger and the line is thicker, and the request for the pattern is not so precise, you can choose a mesh with a lower mesh. On the contrary, if the pattern is fine and the lines are narrow, and the pattern is pleading for accuracy, a mesh with a relatively high mesh number should be used. The screen mesh number directly affects the print quality. Because the printing plate with relatively low mesh screen number has good penetrability of the printing paste, the mesh is not easy to be blocked. But the mesh number is too low, which also makes the printing material penetrate too much, which constitutes the phenomenon that the edges of the pattern are unclear and the image is distorted.
The screen mesh has a high mesh number, can reach the edge of the figure, and the line is very scratchy. However, the screen mesh number cannot be higher than the printing material mesh number; otherwise, the mesh holes are simply blocked. Therefore, you should choose a moderate number of meshes, generally between 120 meshes and 300 meshes. You can use the bisection method in the single-element advantage selection method to make a selection test.

2. Stretching the net
When the wire mesh stretches the frame, the tightness should be appropriate, and pay attention to the same tension at each point in the frame. If the wire mesh is stretched too tight or too loose, or the tension at each point is inconsistent, the following questions may occur:
The screen is stretched too tightly: to make the printing plate screen lose its elasticity, and the image is distorted during printing; the screen is stretched too loose or the tension of each point is different: ①Precision lines cannot be developed; ②The edges of the pattern appear jagged, Distorted graphics; ③The phenomenon of slurry leakage occurs during the printing process; ④For the F version, the adhesion between the film and the screen is poor, which constitutes the phenomenon of the film falling during development.

The quality of the printing plate is related to various temperatures during the production. This temperature includes: 1. The temperature in the operating room; 2. The temperature in the oven; 3. The temperature in the exposure box; 4. The temperature of the developer.
L Operating room temperature

Operating room temperature should generally be kept at 25 ℃. In winter and summer, pay attention to the scheduling and control of temperature. For version F, the effect of room temperature is not obvious. For version D, in hot climates, if the room temperature control is not good, the following questions will occur:

①It is easy to make thermal cross-linking when making glue, which makes it difficult or impossible to develop; ②There are many bubbles in the glue, causing bubbles or trachoma on the layout. For the N version, when the room temperature is lower than 2O ℃, the following questions will occur: ① The uneven thickness of the squeegee constitutes a difficult or undevelopable development: ② The appearance of the screen is blisters, which constitutes the phenomenon of slurry leakage in the printing process; ③ The page is not Flat, the color of the printed pattern is inconsistent.

2. Temperature in the oven

The drying temperature determined according to the performance indexes of the plate-making materials should be preliminary and gradually tested from the lower limit of the rule plan according to local conditions, and the best drying temperature should be selected. Generally, drying the N version does not add blast; drying the F or D version needs to add blast to accelerate the speed of the volatilization of the plate surface, and quickly make the plate monotonous. If the drying temperature is too high, the following questions may occur:

① Difficult to develop, with haggle; may not show up; ② The silk screen loses its elasticity, causing the printed patterns to be distorted.

The drying temperature is too low, and the monotonic time must be extended, otherwise the layout cannot be fully monotonic. For the F and D plates, the film layer or adhesive layer will fall during development; for the N version, the adhesive layer is also easy to be thinned during development, and then the service life of the printing plate is shortened.

The process of making a printing plate is a messy physical and chemical process involving many elements. In addition to the above elements, there are the luminosity during exposure, the humidity in the process of plate making, and so on. Especially in the plate-making process, many processes are manual operations, and many elements are directly controlled by people. Therefore, in the production process, many elements cannot be measured accurately. For example, the thickness of the squeegee is difficult to measure during operation. Therefore, it can not be determined specifically how long it can be dried; for another example, how thick the film layer after squeegee is, how long should the exposure time be It is added incrementally, but it is obtained after repeated experiments!



Licheng Hot Air Stenter System Is Advanced

Posted by lichengprintingmachine on Mai 11, 2020 in News

Licheng Machinery provides high-quality Hot Air Stenter. All our hot air tenters have the quality characteristics of automatic chain lubrication system and bow correction system.  Manufacturers, exporters and suppliers of hot air tenters provide quality machines.  Hot air tenter is equipped with high-quality equipment, reaching international standards.  Since the past 25 years, we have been producing, exporting and supplying heavy-duty hot air tenters for the textile industry.  We also operate various types of textile machinery accessories, such as rubber rollers, rubber fillets, bow rollers, banana rollers, cloth guides, tenter accessories, tenter pins, tenter machines and Open Type Rotary Screen Printer.

Unique airflow system with independent blowers for top, bottom spray boxes and four blower chambers.
Electronically controlled airflow, no mechanical damper.
The efficient drying zone provides higher output (up to 30% power saving) at lower operating costs.
The working width starts from 160cm.  By 380cm, it is fully automated.
Suitable for weaving, knitting, interior decoration, denim and non-woven fabrics, industrial textiles and terry towels.

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What Are The After-sales Maintenance Of Tongda Analysis Equipment

Posted by tongdaedith on Mai 9, 2020 in News

Tongda analysis machine repair types:

1. Chromatography (gas phase, liquid phase, GPC, AKTA, ion chromatography, gel chromatography, etc.) ;,

2. Spectrum (infrared, original absorption, ICP, ICP-MS, XRF of various brands, handheld alloy analyzer);

3. Mass spectrometry (liquid quality, gas quality, quadrupole mass spectrometry, ion hydrazine mass spectrometry, time-of-flight mass spectrometry, etc.);

4. Electron microscopy and energy spectrum,

5. Physical property research equipment (thermal analysis, particle size analyzer, specific surface, etc.);

6, X-ray machine, Micro-CT and other radiation equipment;

7. Laser equipment;

8. Other high-precision and high-value-added equipment that no one can repair.

Tongda analysis equipment maintenance items:

RF oscillator, air control box, Zeeman effect power supply, power supply, main board, light control board, vacuum pump, X-ray tube, detector, communication board, side board, robot arm, degassing pump, EPC Yuan / quaternary pump, four-stage rod radio frequency (RF), molecular pump, mechanical pump, high-pressure generator, etc.

Tongda analysis equipment maintenance commitment:
1. The company can provide free pick-up equipment (only in Xi’an)
2. The company will list the fault phenomenon and maintenance plan on the quotation after each instrument sent for repair is tested.
3. The same faults of the repaired instruments are guaranteed for 12 months free of charge.

When the user’s Tongda analysis equipment fails and requires maintenance, the user’s description of the failure is used to determine the cause of the failure, and an engineer is sent to the user’s site for maintenance in time to ensure that the instrument returns to normal. Perform system maintenance on the user’s Tongda analysis machine, clean parts, and adjust related parameters to facilitate stable operation of the instrument.

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Introduction Of Characteristics Of Flat Screen Printer

Posted by lichengprintingmachine on Mai 9, 2020 in News

As an electronic device, Flat Screen Printer has attracted the attention of many businesses.  So, what are the characteristics?  For this problem, if you want to know what the specific characteristics are, you should also know the classification of flat-panel printers.  After all, different types of flat-panel printers have different characteristics.  According to different characteristics, flat-panel printers are mainly divided into fully automatic, vertical, turntable, four-column, diagonal arm, fully automatic elliptical flat-panel printers, etc., and different types of characteristics are also different, let’s take a look at them.
I. full-automatic flat-panel printer
As the name implies, the most important feature of a full-automatic flat-panel printer is its high degree of automation. This kind of flat-panel printer is mainly used in mass production. This kind of flat-panel printer is aimed at printing soft materials such as PET/PE. Generally, large organizations will only introduce this kind of full-automatic flat-panel printer.
II. Vertical Flat Plate Printer
This kind of vertical flat-panel printer is mainly used in the printing industry, and with the different needs of the industry, some high-tech electronic industries, dot printing and so on have also begun to have a large number of demands for vertical flat-panel printers.  The biggest characteristic of this kind of vertical flat-panel printer is its relatively high clarity.
Three, turntable flat printer
The biggest characteristic is that it is difficult to locate. This kind of flat-panel printer is mainly used in the clothing industry in general, while some small CD-making enterprises also use this kind of flat-panel printer more often.
Four-and four-column flat-panel printers
At present, it is mainly used in decoration industry or large glass enterprises. This kind of flat-panel printer is more suitable for large-area industries.
Five, inclined arm flat printer
Currently, it is mainly used in the packaging industry. Although its efficiency is higher than other flat-panel printers, its accuracy is lower. Therefore, such flat-panel printers are more common in uv printing.
Six, full-automatic oval flat-panel printer
In addition to the above, there is also a kind of full-automatic flat-panel printer similar to that of the full-automatic elliptical flat-panel printer, which is currently mainly used in the clothing industry and can be used for water slurry, ink, etc.
No matter what type of flat-panel printer, it has different characteristics, and different flat-panel printers have different prices.  No matter what kind of flat-panel printer, there is an adaptation process at the first contact.  In this regard, we should make a detailed analysis of our needs before purchasing, and at the same time have a detailed understanding of what is suitable for us. Only in this way can we really buy a flat-panel printer that is suitable for us.



Introduction Of The Function Of Hot Air Stenter

Posted by lichengprintingmachine on Apr 28, 2020 in News

First, let’s summarize what the main structure of the Hot Air Stenter is. The main devices are: cloth entry and exit device, rolling device, hot air circulation system, cooling device, weft adjuster device, drying room, overfeed device, Door width adjusting device and dehumidifying device etc. The cloth entry and exit device is used for cloth entry and exit, so the car device is also important for padding treatment of the fabric.

In addition, the main role played by the hot air circulation system of the hot air puller setting machine is to improve the thermal energy utilization efficiency and production efficiency of the equipment. Therefore, the cooling device also reduces the temperature of the finished product, in addition to reducing cloth creases.

It may be necessary to use a hot air tenter for the final treatment of the fabric. Its main purpose is to improve the surface quality of the fabric through this operation. After all, this operation can reduce the shrinkage of dyeing, improve the uniformity of dyeing, and make the fabric look more beautiful.

In addition, after being processed by the hot air tenter, the yarn strength and feel of the fabric have been significantly improved, so it can also eliminate static electricity and improve the overall quality of the product.

The Open Type Rotary Screen Printer designed and produced by Zhejiang LICHENG Printing & Dyeing Machinery Technology Co., Ltd has good performance and is also very suitable for the choice of customers. If you are interested, please come and leave us a message.

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Introduction Of Working Method Of Tongda Analysis Machine

Posted by tongdaedith on Apr 13, 2020 in News

With the acceleration of China’s economic process, China’s industrial development model and level are also constantly improving and upgrading.  Many industrial appliances have undergone updated changes, such as flaw detectors, which have diversified due to the diversity of working methods.  The main application of X-ray detection is to detect macroscopic geometric defects (flaw detection) in side samples.  According to different characteristics such as radiation type, recorded equipment, process and technical characteristics, etc.  The radiographic testing of Tongda analysis equipment can be divided into many different methods.  Radiography is a nondestructive testing method, which uses X-rays or gamma rays to penetrate the test piece and uses film as information recording equipment.

This method is a basic and widely used ray detection method.  Therefore, if there is no adjustment device, Tongda analyzer is very inconvenient to use.  The power supply of portable X-ray machine is 220V and 50Hz single-phase AC.  After entering the control box and passing through the power switch, the power supply is divided into two paths, one of which enters the main circuit and the other feeds into the weak current control part.  The main circuit is mainly composed of a voltage regulating and rectifying unit, a liquid crystal filtering unit and an inverter unit, also known as a chopping unit. The output pulse signal is provided to the primary of a high-voltage transformer (commonly known as a high-voltage package).  The control units produced by different manufacturers are different, but their functions are basically the same, including generating trigger control signals, exposure time, milliamp protection, overvoltage protection, overtemperature protection, etc.  Some devices are controlled by single-chip microcomputer or microcomputer to realize the functions of automatic trainer, voice prompt, fault code display, exposure parameter setting, storage, memory, etc.  In general, the adjusting device should be able to adjust the Tongda analyzer with six degrees of freedom to adjust the height and opening.

When these three functions can be adjusted, Tongda analysis machine can basically be freely expanded and contracted, making it more flexible to use.  As for the working method of this tool, it is also based on a series of researches and related achievements of China’s physical and chemical industries.  It is divided into several different types and applied in different fields.

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Sensitivity Of Tongda Analysis Equipment

Posted by tongdaedith on Mär 30, 2020 in News

Explanation of Sensitivity in Tongda analysis machine
1. When using Tongda analysis equipment to magnetize some complex workpieces, the magnitude of magnetizing current is difficult to estimate due to the uneven distribution of magnetic field intensity on the surface of the workpieces.
It is often difficult to achieve the ideal magnetization effect by only relying on the usual detection experience to select the magnetization current in Tongda analysis equipment.
Therefore, we can use sensitivity test pieces to select the best magnetization specification in the examination of complex workpieces by Tongda analysis equipment.
2. The sensitivity test piece can be used to check:
The comprehensive performance of flaw detection equipment such as Tongda analysis equipment, magnetic powder and magnetic suspension is used to check the distribution law of magnetic field at each point on the surface of the workpiece to be inspected.
The main methods of using sensitivity test pieces in Tongda analysis equipment are:
(1) firstly, using adhesive tape paper to tightly adhere the slotted side of a type a standard test piece to the clean surface of a detected workpiece;
2) While magnetizing the workpiece and the test piece with Tongda analysis equipment, spraying magnetic suspension on the test piece and observing the magnetic marks on the test piece;
3. Under the condition of using sensitivity test piece, if the magnetization current of Tongda analysis equipment is appropriate;
Then magnetic marks with grooves will appear clearly on the uncut groove surface of the test piece so as to achieve the detection effect.

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Rinsing Of DIN 603

Posted by abyihui on Mär 23, 2020 in News

I. DIN 603 manufacturers need to be very careful when rinsing DIN 603 because this process is very important. Residues will remain on the surface of DIN 603 during this process.  The rinsing step is to be carried out after the silicate cleaning agent is cleaned.
II. Stacking during tempering and heating of DIN 603 shall be completed, otherwise slight oxidation will occur in quenching oil.
Third, white residue of phosphide will appear on the surface of high-strength screws, which indicates that (point one) the inspection is not careful enough.
4. If the round head bolt manufacturer finds that the surface of parts is blackened and produces chemical reuse, it indicates that the heat treatment is not done well and the alkaline residue on the surface is not completely removed.
5, parts standard parts will rust during rinsing, and the water used for rinsing should be replaced frequently.
6, Round Head Bolt manufacturers, excessive corrosion phenomenon shows that quenching oil used too long, need to add new oil or replace.

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Application Field Of Tongda Analysis Machine

Posted by 1Marla-Steffey59 on Mär 23, 2020 in News

With the progress of the society and the rapid development of the automobile industry, people put forward higher and higher requirements on the reliability, stability and appearance of the automobile for a long time.  Many of the materials used in automobiles are mainly metal materials.  Such as cast steel, cast aluminum, etc.  These castings affect the safety and service life of automobiles. Tongda analysis machine can be used to detect the good and bad of castings.

In order to make the car safer, many car parts manufacturers need to use the car, and every workpiece must be tested.  For example, the engine, piston, piston ring, connecting rod, brake and braking system, steering wheel, automobile wheel, shock absorber connecting rod and other parts of the automobile are free from defects, cracks and bubbles.  Once these unqualified products appear, it will directly affect the safety of the car.  Therefore, we must do a good job in testing.  What instrument can be used to do this?  Tongda analyzer can meet the requirements of this detection. Tongda analyzer can automatically and quickly detect size, analyze and display defects.  Moreover, the application scope of 3D industrial CT of traditional Tongda analyzer in industry is to detect and measure metal and plastic castings in three dimensions.  The high-resolution Tongda analysis equipment has not only been applied in these industries, but also opened up new application fields in sensing technology, electronics, materials science and other natural sciences.

Auto parts are an important foundation to support the stable, healthy and rapid development of our auto industry, which is of great significance in the development of our auto parts industry.

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