Metal detection and X-ray detection
the pollutant detection market continues to grow, including metal detection and X-ray detection with high cost. At the same time, the surface inspection provided by X-ray detection and vision system also plays an important role in the broader field of quality control
recently, X-ray system has attracted extensive attention, mainly because X-ray has the ability to check the defects or cracks of items in the package, and also because it has the ability to detect glass, stone, bone and other debris (which cannot be detected by metal detectors)
metal detection and X-ray detection still belong to different market types. Mike Randall, executive chairman of lock detection system, pointed out that to enter this market, suppliers must make a lot of investment. He explained, "from the perspective of investment cost, we regard it as two different types of markets. In most cases, there is no competition between X-ray detection and metal detection."
therefore, lock is not as active in entering the X-ray detection market as many other companies. Lock believes that in this way, the company can maintain its professional image and concentrate precious development resources on core technology fields
however, metal detection and X-ray detection do compete directly in the field of color foil packaging. Whether it's cooked food, cheese or pet food, does Britain have it? Huge color foil packaging market
metal detection technology is indeed difficult to detect the metal contained in color foil. Randall explained, "stainless steel detection is the most difficult and has always been our goal to achieve. Therefore, we have developed a tri band detector." He also realized that X-ray detection did have advantages in detecting bronze, brass, red copper, aluminum and other materials with similar or the same characteristics as color foil packaging
new sensor technology
for some color foil packaging, sartorius, a weight and metal detection company, claims to have achieved a "sensor technology breakthrough". The aperture height of the flat panel observer is mm, which is said to be able to detect the presence of stainless steel in low profile aluminum foil packaging
Andrew hallitt, brand manager, said, "from a magnetic point of view, the aluminum foil itself is transparent. Most stainless steel has been magnetic treated at a certain stage, so it is magnetic. Our system pre magnetizes the pollutants, and then sends them to the flat panel detector."Sartorius also revealed that this metal detector was jointly developed by the company and German STL company. It adopts sensor technology and evaluation electronics principles. Through professional design, it can avoid interference and noise in the surrounding environment
in order to improve the detection performance in the field of difficult detection, metal detection professional companies have been committed to developing multi frequency systems. Sartorius is one of the companies capable of producing such products. Hallitt pointed out that manufacturers who package products according to different conductivity levels can now optimize mechanical sensitivity throughout the process
lock met 30+ 3F tri frequency detector adopts three crystal control frequencies (high/medium/low), which can select the best frequency for products and their packaging. Therefore, the detector will automatically select high frequency when checking the products packaged in film; When checking the metal film packaging, the low frequency is automatically selected
cintex, which was recently acquired by Loma Systems Corporation, further implemented this strategy and announced that it had produced "the first metal detector with frequency conversion function". The company believes that Chen Yu, head of the expert group of the composite membrane special committee of "Sen" China Plastics Association, said that the try VF detector has a wide working frequency range between 40KHz and 900khz, so it can provide maximum sensitivity for all kinds of products, whether dry or wet, it is also suitable
however, control and management are crucial no matter whether frequency converters or multi frequency machines are used
for example, John CRA, the global product manager of the pollutant detection department of Thermo Electron, is a provocative Ig, who believes that in the future detection of complex metals, not only dozens of products should be calibrated, but also should be automatically switched to the correct settingsCraig believes that more and more large customers require the integration of PROFIBUS, Ethernet and other networks into the SCADA control system. In the whole plant system, data recording, reporting, dynamic analysis and traceability will all be unified
he explained that it is crucial to be able to detect the direction of pollutants and make diagnosis. The auditcheck system is self-developed and designed by Thermo Electron. It can automatically check the performance of metal detectors through programming, and is especially suitable for this kind of networkCraig said, "what customers need is an instrument that can be operated through a switch. Finally, the inspection system should be able to be put into inspection through simple installation."
system support will constitute the world's first fully automatic solid-state lithium-ion battery production line development
craig listed a lot of development work around the metal detection function support system, including accelerating the processing speed of microprocessors, while also improving the basic functions of metal detection
he said, "for example, we recently launched a new product for the pharmaceutical industry, in which the color foil system adopts a new coil system design. There is still room to improve the performance of metal detection."
at the same time, lock also launched a new system for the pharmaceutical industry that meets the requirements of the Federal Food and Drug Administration of the United States (in accordance with 21 CFR Part 11), in which the setting and production reports can avoid unauthorized changes and must be registered and logged in by the operator
Randall believes that the importance of metal detection system development cannot be underestimated. He said, "it is true that these developments only involve the gradual improvement of system sensitivity, and the amount of each improvement is small, but the progress is ongoing". He pointed out that the best proof is that lock tri band products are favored by the target industry
he added, "At the same time, we have been carrying out other development to make the structure more compact, cleaner, simpler and faster data transmission.
in the field of metal detection, the recently launched products include the phantom E-type meat conveying pipeline system of Fortress technology company. The whole system can swing outward, which is convenient for rapid product replacement. The operator control equipment can be installed on the detector or installed remotely.
Safeline supports the development of high frequency The product signature of metal detector is an example. Safeline said that the machine operates at 850khz, which is times higher than the frequency of most systems used today. The company claims that the system is extremely sensitive and can detect tiny metal fragments and debris, including stainless steel
they said that this kind of metal detector can also check a large number of products with the same characteristics. In this way, various products can be checked on the premise of minimizing the number of mechanical settings, so that the operation is simpler and faster, and the mechanical sensitivity will not be affected
mettler Toledo incorporated Safeline metal detection system into its garvens combichecker heavy metal detector. The company said that using the zero metal zone technology, the mechanical part of the metal detector can be integrated into the feeding conveyor of the weight measuring device
it is not a new concept to integrate pollution analysis and gravimetric analysis. This cross use is one of the potentials of X-ray detection. John Craig of Thermo Electron said that although the weight gauge can determine the total weight and ensure compliance with regulatory requirements, X-ray detection makes this process further. He said, "through X-ray testing, we can not only check whether all components are in place, but also conduct gravimetric analysis, with an accuracy of 1%-2%, and check whether the proportions of various components are appropriate."
x-ray detection has provided support for weight measurement system for many cases. Craig said, "the weight measuring device may think that the double-layer box or block is qualified, even if there is a layer missing in the bottom layer. Although this does not violate the law, consumers may feel cheated. This phenomenon also exists in biscuit fragmentation. It is also feasible to use the legal weight, but it may be regarded as a non-standard product."
he believes that X-ray detection system is different from visual system, and X-ray can significantly reduce the cost in process control and quality control. Like metal detection, the above advantages can be realized through SCADA network which can record and communicate data. He said, "more and more users are asking for this capability, even if the efficiency of the production line can be improved by another 0.1%
obviously, the main success of the X-ray detection system lies in its ability to detect non-metallic pollutants. When referring to safety issues, Craig cited the Chilean sea urchin meat industry, which requires the use of X-ray technology. He said, "sea urchin meat is shipped to Japan and sold as delicious food. However, sea urchin bone is highly toxic, so the products must be strictly scanned to ensure that there is absolutely no toxicity."
development in the field of X-ray pollutant detection includes X3 pipeline inspection system launched by Loma system company, which is applicable to the detection of meat, snacks, dairy products, soup and sauces. Loma claims that with advanced filtering technology, objects with low density such as calcified bones can be detected
x3 adopts autotrack image processor, which is said to be able to automatically set the scanning components according to the density of the tested food, which can shorten the setting time and reduce the number of false waste products. Loma also claimed that the system has a self-test system, so there is no need to use trial samples in the pipeline
at the same time, Loma also launched a new line end X-ray detection system suitable for the fast food industry, which can inspect the packaged whole box of products such as crisp food
delete individual units
snax3 system is said to be able to replace each inspection unit of the production line to detect various pollutants, including metal, glass, stone and high-density plastic contained in product packaging boxes from other production lines, as well as the flavoring agents and sugar lumps contained in low-density fast food and cereal products
in order to realize this function, snax3 system integrates multi-layer image processing ability to make the scanning equipment adapt to the characteristics of different foods. At the same time, autotrack detection software calibrates the machine, so there is no need to stop the machine for adjustmentAlan Johnson, X-ray product manager of Loma company, said, "snax3 system can complete the functions previously completed by multiple sets of free falling metal detectors. Therefore, in most cases, it can reduce costs and try to avoid system interruption."
john Craig believes that in the future, more resources will be invested in designing X-ray systems that better meet the needs of customers, such as detection systems suitable for the market of colored foil containing metals
he said, "the challenge we face is to develop X-ray systems that can adapt to specific applications. In the next five years, we will focus on this field and strive to introduce X-ray based solutions suitable for specific applications to customers, rather than general-purpose X-ray detection systems." Otherwise, the end-user has a variety of functional features that are completely unrelated to the actual use, which will only increase the overall cost
it has obvious advantages to integrate the comprehensive detection system of various pollutants with the quality control system. However, some metal detection system suppliers warn that it is difficult to complete both tasks by setting up X-ray machines. At least, it is impossible to optimize both performances
indeed, according to the suppliers of metal detectors and X-ray systems, more X-ray systems are installed at the end of the line, less before the packaging stage of the production line, and are usually used to inspect various packages in composite packaging