Measurement and control technology and instrumentation internship summary report

Measurement and control technology and instrumentation internship summary report

Read three years of college, however, most of the people on the professional knowledge is still very little, in the measurement and control technology and instrumentation around the winding indefinitely, in the sophomore period at the end of the college had organized a week of apprenticeships for us, but due to the knowledge acquired at that time involves the professional knowledge of this is not much, and see the things and the profession is simply very difficult to link up. It is very difficult to connect, in the hearts of many students face to the profession has been very confused.

This year's summer vacation, the college originally organized us to go to Shanghai for internship, but due to the sudden atypical epidemic, the whole plan had to be re-set. After the efforts of the college, we finally chose Shunde as our internship base. What is Measurement and Control Technology and Instrumentation? What kind of work is this program suitable for? What is the future of this specialty? With these questions, we participated in this internship. This production internship is led by three teachers, Cha Xiaochun, Huang Aihua and Li Mian, measurement and control of the total **** four classes, more than 150 people to participate in the internship. June 30th to go to Shunde, and live in Shunde Daliang Fengcheng Middle School.

For the first time in three years to an unfamiliar place, it is really an exciting thing, we live in the middle school environment is very good, because it is a middle school, and meet the summer vacation, it is very quiet, really a good place to learn, I just want to internship in the spare time by the way of their own network engineers program, so that you can make the time to trickle down. This internship is scheduled for three weeks, but due to some unforeseen things, the trip was shortened to two weeks, and this production internship in the teaching program is four weeks, so the remaining two weeks must be made up in the next semester! Two weeks of production internship, we have been to the Shen Ling air-conditioning equipment Co., Ltd., Shun Te Electric Co., Ltd. dishwasher company, the United Plastics Technology Industrial Co., Ltd., Guangdong Hongli Machine Co., Ltd., Shunde Kewei Electronics Co., Ltd., Guangdong forging machine tool plant and other large-scale factories, to understand the production of these factories, and the specialty related to a variety of knowledge, the workers of the factory work situation and so on.

The first personal experience of the knowledge and practical application, sensors in the application of air-conditioning equipment, electronic technology in the application of the electronics industry, precision machinery manufacturing in the application of machine tool manufacturing, and so on the combination of theory and practice, so that we have a wide-open eyes. It is also a first review of previous knowledge! This production internship for our future learning, looking for work is really beneficial, in just two weeks so that we initially let the rationality back to the sensibility of the re-understanding, but also let us initially recognize the society, for the future should be grasped in the direction of the people also have some inspiration! Shunde is a beautiful place, where the transportation routes are well-connected, perhaps this is why Shunde has always remained the first of the country's top 100 counties! Of course, there are also reasons for the soundness of its institutions, social security is perfect! Here is also the beginning of our first social, towards a better and cruel future, I have always believed in their own ability, even if the life of the road as Shunde four-way highway, but the direction is only one, that is, forward, never give up, never retreat!

Shenling Air Conditioning Equipment Co.

July 1, this is the first day of our internship, we came to Shenling, which is a manufacturer of central air conditioning. Came to the factory, the person in charge of the factory first introduced some of the production of Shenling. Ltd. was formally put into operation in 1992, is a collection of scientific research, production, testing, sales, engineering services in one of the modern enterprises, is one of China's 500 largest electrical machinery and equipment manufacturing enterprises. Specializing in the production of "Shenling" brand large and medium-sized water-cooled, air-cooled unitary air conditioners, clean air conditioners, constant temperature and humidity machine room air conditioners, rooftop air conditioners, high-temperature environment of special air conditioners, dehumidifiers, water chillers into fan coils, cabinet fan coils and a combination of air-handling units and other end equipment. Among them, the unit-type air conditioner and clean air conditioner, including cold air type, cold air electric heat type, heat pump type, constant temperature and humidity type and many other series and varieties. Then we will be divided into five groups to visit its production workshop.

We first came to the sheet metal workshop. From the workshop's positioning management chart, we can understand that the workshop's production process is: material area --> stamping and forming area --> Welding a library --> Welding two libraries --> stamping transformation area --> bulk special inspection point --> aluminum alloy processing area --> sheet metal semi-finished products turnover area --> Welding --> Spraying --> Finished products. Finished products. In the sheet metal shop, various machines were viewed in production. There are M-2023 shearing machine, J23-25 punching machine, J23-40 punching machine, J23-60 punching machine, J23-80 punching machine, J28-500 four-column hydraulic press, CSW-250 punching machine, TA-60T plate bender, RG-80 plate bender, etc., a variety of familiar and unfamiliar machines. Next is the two ware workshop. In the two ware workshop, we watched the production process of drilling machine for pressure vessel, fin punching machine, and the production of some machines whose names we can't remember anymore. In the final assembly workshop, the person in charge of the plant explained to us the principles of shell and tube heat exchangers and water-cooled condensers. In this workshop, we have been able to see the prototype of the complete central air conditioning, in this behemoth, using the knowledge we have learned a variety of sensors, there are electronic technology, precision machine building and so on.

From the Shenling production workshop, we can see that China's air conditioning technology has basically matured, see its central processing chip or to rely on imports! In the factory inspection workshop, the master for us to explain the process of product inspection, and gave me a demonstration of how the inspection is carried out, the instruments used, there are precision instruments, there are commonly used tools, there is a meter is we have never seen, that is, the use of sensor technology amperage meter. In the testing center. In the exchange with the master, we learned about the process of product testing, and related work. A day's visit, in addition to learning, but also has a preliminary impression of the plant, although the plant used many advanced machines, but honestly, the degree of automation here, really can not be complimented, and the working conditions of the workers, but also really general! The same group of . Classmates said to me, you do not ask for too much, they manufacture central air conditioning, so spoiled items, to complete automated production is really not easy, perhaps! But as a member of the Chinese industry, I think it is also necessary for them to find another better production method! Shun Special Electric Co., Ltd. July 2 stop is Shun Special Electric Co., Ltd. which is a special transformer plant, a large enterprise with an annual output value of 10.

3 billion, the plant also established a technology development center (Guangdong Province, Transformer Technology Development Center) for the production of the plant to provide strong technical support. The plant to produce dry-type transformers as the main body. Dry-type transformer, as "China's transformer industry, the first brand" (China Survey and Statistics Office evaluation), the State Science and Technology Commission awarded the implementation of the Torch Plan for high-tech enterprises, since 1992, Shun Special Electric dry-type transformer market share for 10 consecutive years ranked first in the country, accounting for more than 35%. At present, the dry-type transformer has developed SC-SC3-SCB3-SC8(SCB8)-SC9(SCB9)-SCl0(SCB10) and other six generations of products, of which the level of technical parameters of the SC10 series of products has fully reached the international advanced level. Epoxy resin casting dry-type transformer, is the first dry-type transformer in Shunt, is also the first one in China. Dry-type transformer product features: 1, safety, flame retardant fire, no pollution, can be installed directly in the load center. 2, maintenance-free, easy to install, low comprehensive operating costs. 3, moisture-proof performance is good, can be in 100% humidity under normal operation, after shutdown can be put into operation without pre-drying.

4, low loss, low partial discharge, low noise, strong heat dissipation ability, forced air-cooled conditions can be 150% of the rated load operation. 5, equipped with a perfect temperature protection control system, for the safe operation of the transformer to provide reliable protection. 6、High reliability. According to the operation of more than 20000 products have been put into operation, the reliability index of the product has reached the international advanced level. In the dry-type transformer technology has embarked on the road of self-development and innovation, reached the international advanced level at the same time, the plant has also developed many other types of electrical products such as reactors, American box variable, combined substations, SF6 transformers, complete sets of devices, switchgear and so on. After visiting the exhibition hall, we went to visit the production workshop. As we all know, there are two main parts of a transformer: ① iron core and ② coil. In the core workshop and coil workshop we saw the production process of these two major parts, such a large transformer device is my first time to see, it is mind-boggling! Leading us to visit is a senior engineer, he led us to visit, while explaining to us the transformer related knowledge. In the coil workshop, he asked us what we should do in order to make sure the accessories don't rust. Each one of us talked about it, but none of them was complete. He went on to say that there were two kinds: ① hot spraying gold, ② hot plating gold. Then went to the general assembly workshop.

I think the most impressive thing to me this day is the automated warehouse of Shunter and the CNC machines in the complete set of plating workshop. Although I regret not being able to see the operation of the automated warehouse, it is rare to have the honor of seeing this automated warehouse for the first time. And that from Japan imported CNC machine tools, its degree of automation, its precision, its performance indicators are really marvelous not carry on! And when will we be able to produce such machines in China? In Shunt visit time is very short, but every day of the new scene has let our brain to get full, for different knowledge of understanding, different areas of contact, so that our eyes have been broadened. Midea Dishwasher Manufacturing Co. On July 3, we came to Shunde Midea Dishwasher Manufacturing Co. Shunde Midea Dishwasher Manufacturing Co., Ltd. is located in Shunde City, Beijiao Town Industrial Park.

Is the city of Shunde in 1999, one of the top ten investment projects, by the Guangdong Midea Group Co. Midea Dishwasher Manufacturing Co., Ltd. invested heavily in the introduction of advanced product technology and key testing equipment, manufacturing equipment and molds, production and operation of dishwashers and accessories, the degree of automation of its production in the international industry in the forefront in the domestic is second to none, the current annual output of more than 500,000 units of various types of dishwashers. After the completion of the second phase of investment, will form an annual production capacity of 1 million units of various types of dishwashers. Midea Dishwasher Manufacturing Co., Ltd. adheres to the guiding idea of "export market support as the mainstay, supplemented by domestic sales", and realizes the internationalization of its products by taking the export as the guide, and the three series of nearly 30 products developed by it have passed the certifications of the world-renowned certification bodies, such as the German TUV's GS, CE, and EMC, and the U.S. UL and Canada's CSA. Canada's CSA and other certifications, to get the product smoothly into the European and American markets, an effective "pass". Moreover, the performance index of the 18-inch cabinet dishwasher developed and produced by Midea Dishwasher Company has reached the AAB level standard.

So far, Midea dishwasher has been successfully sold to 15 countries and regions, with good quality popular. Midea Dishwasher Manufacturing Co., Ltd. mainly produces countertop dishwashers and cabinet dishwashers. The main parameters of the countertop dishwasher are: Mechanical programmable controller Maximum water temperature 85 ℃ Maximum water spray speed 7. 8 m / s Residual heat drying Transparent window for 3-5 people to use The main parameters of the cabinet dishwasher are: Configuration of the water softener Configuration of the magnetizer Mechanical programmable controller Triple spray wash Maximum water temperature 75 ℃ Maximum water spray speed 7. 2 m / s Residual heat drying Stainless steel bowl racks Automatic residue discharge for 5-8 people to listen to the person in charge that, due to the raw material supply shortage of the main production line just in time, the quality of Midea dishwashers have been successfully popular. Listening to the person in charge, he said that the main production line was stopped due to the untimely supply of raw materials, so what we can see is only the production of some production parts. The most striking thing in the production workshop is the set of fully automated control of the liner in the plate production line.

From grabbing the raw material -à pulling cracks -à wrinkles -à scratched -à finished product, the entire production process is fully automated by robots and machines. In the hydraulic press control point, you can see that this place consists of two parts. One is a single-action sheet stretching hydraulic press, and the other is a closed double-point mechanical press. Then the person in charge led us to visit the production line that happened to stop production, and explain to us the production process of the production line, he spoke in colorful, so that people such as its production in the presence of its production, if you can take a glimpse of its production process, it is really available to watch its magnificent scenery. Immediately after we went to the sample unit and process test area. The leader of the team, very detailed for us to explain his own design of a dishwasher work, how to control, how to operate, internal composition and so on.

In the process test area, we could see the process of testing the finished product, which is very important for them to improve the product and the performance. Dishwasher for us Chinese, or a very new thing, and the United States can be the first business opportunity to see its vision is how avant-garde, but they are just starting out, most of the products are to help others labeled exports, the central technology is also dependent on imports. Listen to the person in charge, if the name of the United States exports, the benefits may not be very good, these words really sigh! But the purpose of our visit is to learn, these things are also not very relevant to us, and our task is to apply what we have learned in the near future, to see if we can make a difference then! Ltd. On July 4, we went to Guangdong Union Plastics Technology Group, which is one of the largest manufacturers of plastic pipes and plastic extrusion production equipment in China. As a group, modern high-tech enterprises, the main industries of Uniplast are plastics, machinery, electrical appliances, and a wide range of chemical industry, trade, international investment and other fields, and its leading products are plastic piping and plastic extrusion production equipment. Plastic mainly produces PVC-U water supply pipe, drainage pipe, PP-R drinking water pipe, PE pipe, aluminum-plastic composite pipe, PVC wire groove pipe and other products; machinery mainly produces PP-R pipe extrusion line, PVC pipe extrusion line, aluminum-plastic composite sheet production line, PE double-wall winding pipe extrusion line, large diameter PVC pipe production line, parallel twin-screw extruders, PVC Plastic steel doors and windows production line and other machinery and equipment; electrical appliances, mainly the production of high-level switch socket, ventilation fan series products; chemical industry, mainly research and development of new products such as chemical modification materials.

The above information is produced by the factory in the advertisement film to understand, the person in charge of the factory special arrangements for a few Huagong, Guanggong brother to lead us to visit, and lead us is a Huagong brother. Huagong senior brother in leading us to visit at the same time, but also for us to explain the characteristics of the product, performance, specifications and other related knowledge, to facilitate our understanding. According to the record: PVC-U drainage pipe Product features: Suitable for large-scale construction of the current code Smooth inner wall, reducing the friction resistance of the fluid Adoption of environmentally friendly materials with high impact resistance Strong corrosion resistance Pipe fittings supporting a full range of soluble adhesive splicing Lightweight, easy to transport, installation, maintenance, repair and convenience Long service life PVC, including pipe (LSP series), rainwater pipe (LSY series), flaring pipe (LSK series), water pipe (LSK series), water pipe (LSK series), water pipe (LSK series), water pipe (LSK series), water pipe (LSK series), water pipe (LSK series), water pipe (LSK series). Pipe (LSK series). PP-R environmentally friendly and healthy drinking water pipe Product features: sanitation, no chemical action, oxidation problems Easy and reliable installation Thermal insulation and energy saving Light weight, high specific strength Smooth inner and outer walls, flowing water Yin force is small, low noise Heat-resistant ability is high; low thermal conductivity, can withstand hot water and high pressure Highly flexible, not afraid of the cold temperatures, and can accept a great expansion Corrosion-resistant, no scaling Long service life recyclability Product specifications: Lian plastic The specifications of PP-R pipes and fittings are ф20- ф110mm. In addition, Huagong brothers also made a detailed explanation for us on other products, such as PVC-U double-wall corrugated pipes, PE health water supply pipes, PE safety gas pipes and so on, and answered our questions enthusiastically. Finally, the person in charge of the plant, personally led us to the socket production workshop.

Guangdong Hongli Machinery Co. On July 7, the first day of the second week of internship in Shunde, we came to Guangdong Hongli Machinery Co. Ltd. (formerly Shunde Qinchuan Hengli Plastic Machinery Co., Ltd.) is a high-tech enterprise in Guangdong Province, is the South China University of Technology Plastic Machinery Postdoctoral Experimental Base, is China's production of all-hydraulic injection molding machine is the largest, the most complete series of professional factories, but also is the world's only mass production of all-hydraulic small and medium-sized series of injection molding machine from 10 tons to 1,000 tons of manufacturers. The company developed and invented and won patents in China, Japan, Europe, the United States and other countries, the leading product - four-cylinder all-hydraulic direct-locking injection molding machine, is China's counterparts in the first national Torch Plan project. Its series of products have been listed in the national key new product projects for many times, and the authoritative experts in the domestic plastic machine industry have unanimously assessed that the clamping structure and hydraulic system are the first of their kind in the world, and the technical performance of the whole machine has reached the world's advanced level. Its successful introduction to the market is a major breakthrough in the field of all-hydraulic injection molding machines. Through continuous innovation and development, Hongli Machinery Company has successfully launched a variety of special injection molding machines - PET special injection molding machine, U-PVC special injection molding machine, thermosetting plastics injection molding machine, nitrogen thin-wall rapid injection molding machine, two-color, two-component injection molding machine, ultra-precision DVD disc complete set of production equipment and dedicated to the production of miniature electrical appliances, electronic plugs, high-speed, high-precision small-sized (30 tons clamping force below) injection molding machine. This series of injection molding machines are of high speed, high precision and small size (below 30 tons clamping force). This series of products are favored by users due to their outstanding advantages of precision, no wear and tear, long service life, high speed, high efficiency, energy saving and no need to adjust the mold.

Its leading products, all-hydraulic four-cylinder direct-lock two-plate injection molding machine Technical Requirements: C-type machine standard configuration 25kg dryer 68# hydraulic oil attached to the machine delivery Performance, Scope of Application: ● four rod force balance, force line 40% short, system rigidity; ● clamping force of the repeatability of the high precision; ● clamping force according to the feedback control of the injection pressure; ● mold placement can be automatically adapted to the molding gears, lenses, discs and other high-precision products. High precision products such as gears, lenses, CD-ROMs, etc. can be molded. Technical Requirements: Standard configuration of E-type machine (equipped with oil motor of Zhongyi) 20 open nitrogen accumulator (nitrogen injection device) PID liquid control (solid state relay) Minimum mold thickness 120mm (40mm thick steel plate is added to the head plate) 50kg cutter dryer is equipped with Tricore "G" Series Precision Molding Machines Applications Tricore "G" Series Precision Molding Machines Applications Tricore "G" Series Precision Molding Machines Tricore "G" series precision molding machine is further upgraded on the basis of the original "E" model, equipped with high-response closed-loop servo system, nitrogen fast injection device, and practical Austrian Berger computer, which is professionally used for precision molding of CD-ROMs, optical lenses, watch gears, electronic connectors, mobile phone housings and other precision parts. It is specialized in molding precision parts such as optical discs, optical lenses, watch gears, electronic connectors, cell phone shells and so on. Standard Configurations: ● Austrian Bergerac computer (special devices can be equipped with computer remote control, more suitable for export) ● Injection part of the servo system ● Dual pumps, nitrogen fast injection device ● Hard chrome-plated screw ● Injection, clamping, ejector position are electronic ruler control ● PID temperature control ● Mechanical, electrical and hydraulic triple safety protection devices ● Two sets of hydraulic core extraction device After visiting its production workshop, the factory's old president, Mr. Huang also gave us a lesson. Mr. Huang also gave us a vivid education lesson. He said that the two main factors for the success of Chinese factories are technology and system, and perhaps this is why Hongli has become a high-tech enterprise from a deserted factory to the present scale of development! And his sentence: in life, money is not the first thing, life should have a goal, should have an ideal, should serve the motherland. Has been entangled in my heart for a long time can not be forgotten! Listen to him, he recently engaged in two patents, although he is the boss, but has not forgotten the scientific research work, it can be seen that his mind is how open, his sentiment is how noble! Shunde Kewei Electronics Co., Ltd. July 8, we came to the Kewei Electronics, the first to the plant, the person in charge of the first introduction of the production of the plant, it is understood that the plant output value of 100 million, is a small and medium-sized enterprises. The company's products are mainly by the air conditioning series controller, refrigerator computer chip class controller, microwave oven controller and water heater controller, which contains frequency control and fuzzy control technology. The company has a number of high-quality electronic hardware and software development technology personnel, supporting advanced production, testing facilities and manufacturing process, the annual production of a variety of microcomputer controller 3 million sets. Over the past seven years, the company has developed, designed and produced more than 300 kinds of microcomputer controllers, and has established long-term supporting and supplying relationship with international famous home appliance groups, such as Kelong, Midea, Hualing, TCL, Granz, Wanjiale, Aucma and so on. As a manufacturing industry, the company invests 5% of its annual sales revenue in technology development, and continuously introduces new microcontroller technology, new control technology and new display technology into home appliances in order to improve the technological content of the home appliance industry. The integrated design of new technology and manufacturing process makes the products more competitive. The software development center with strong strength has a full set of development tools from famous microcontroller manufacturers such as MOTOROLA, NEC, MITSUBISHI, TOSHIBA, etc., which provides services such as programming, on-line simulation and intelligent testing of software.

As a manufacturing company, it has the following characteristics:

l Manufacturing sophisticated products not only rely on scientific management, but also need to be matched with advanced processes and facilities to ensure.

l SMT surface mounting and hot air reflow soldering make the controller precise and reliable, more design space for the whole product.

l Automatic plug-in technology represents the cutting-edge technology of the peer group, which is more standardized and flexible for the products, and achieves high efficiency and quality.