Electronic equipment is a typical informatization product. The ever-changing information technology has injected great vitality into the development of the electronic equipment manufacturing industry. Unlike aircraft manufacturing, which requires different molds, electronic equipment requires molds to achieve higher precision.



Researcher Ma Jincang, Deputy Chief Engineer, 39th Institute, China Electronics Technology Group Corporation

Our institute is a professional research and development unit for large-scale measurement and control communication and other multi-purpose antenna systems in China. From the point of view of manufacturing of large-scale antenna electronic equipment, as the development of new products moves toward high-band, wide-band, and multi-purpose directions, the accuracy of the antenna becomes more demanding. The higher is. This is obviously different from the aircraft manufacturing industry's emphasis on streamlined mold manufacturing and general electromechanical and light industrial product industries. The moulds are used to reflect and receive radio wave antenna surface forming molds. Compared to the common metal-deformed metal components, the requirements for surface accuracy are much higher. In general, the lower frequency antenna skins and panels adopt the "mold pull + riveting" process. The mold surface can be designed according to the theoretical surface of the antenna. Material rebound deformation and gravity deformation can be neglected; however, it is used in high frequency bands. For the manufacture of surface antennas, these error sources must be considered. From the perspective of large-scale precision antenna skin and panel molding process, the antenna pull-shaped die is the key to ensure and improve the accuracy of the antenna surface, must be analyzed, calculated by the skin, the panel in the manufacturing process and under various conditions of the production of errors Mechanism, and propose the corresponding solution, in order to achieve the accuracy of the antenna. Therefore, the application of mold CAD/CAPP/CAM/CAE technology in the manufacture of large surface antennas is very necessary.

The traditional mold manufacturing industry is mainly based on map processing, supplemented by analysis and optimization. The mold manufacturing in the electronic equipment manufacturing industry will be adapted to the requirements of large system models and the development of new product development and advanced manufacturing technologies. The traction will be demanded. Specifically, the manufacturing of large-scale antenna molds and the establishment of an advanced CAD/CAPP/CAM/CAE platform will be adopted. Theoretical modeling, simulation and calculation, optimization of the design of a prefabricated intelligent mold structure, through process optimization, process simulation and the use of high-efficiency processing technology and sophisticated detection methods, through the matching of advanced and applicable manufacturing resources to achieve design analysis and Integration and integration of simulation, manufacturing and on-line inspection, and antenna performance index and mechanical accuracy. Therefore, it is an inevitable trend for the development of mold manufacturing technology in the electronic equipment manufacturing industry to continuously improve the level of digital design, manufacturing, analysis, and simulation.

There are many kinds of electronic molds, some are very complicated, some have high precision requirements, and the materials used are very different. Such as the antenna pull die, stamping die, rivet die, adhesive die, etc., using high strength, low temperature deformation of quartz sand bonded blank or high temperature alloy material, mold surface processing is very particular about: 1 need precision 5 Axis high-speed CNC machining equipment; 2 need special cutting tools; 3 need stable and reliable contact and non-contact measurement equipment; 4 also hope that the equipment can have a corresponding expert programming system and process database for users to reference.

The medium and high-grade equipment that we currently use for large-scale antenna mould manufacturing are: MIKRON-UCP1000 in Switzerland, HSM600 high-speed milling machining center, JOBS143 five-axis CNC gantry milling in Italy, MCTPLUS coordinate measuring machine in Italy, and Germany REGRINDE full-function edge grinding machine, Nissan took 18 wire cuttings. These devices have entered 39 flexible design and manufacturing systems and play a very good role in scientific research and production of models. As a new equipment requirement, it mainly adapts to the 5-axis high-speed milling machining center required for the production of antenna products and mold precision parts for higher frequency bands, the turning-milling compound machining center and the middle-to-high grade special processing equipment for the production of complex prismatic parts. aspect.

I usually pay more attention to the development of the domestic and international machine tool industry and the application of new technologies, as well as some famous brands of product advertising. Although not all of the content of interest can be found in each issue, it is often seen. Although some application articles are not directed at the situation of their own units, they still serve as an inspiration for analogy. I think the "program selection" "expert review" "direct on the scene" "dialogue" and other columns are better. Your magazine has a large amount of information and professionalism. I think it is very good. With that addition, I think it is possible to bridge the gap between end users and machine tool designers. At present, there are many domestic and foreign manufacturers of CNC machine tools and their products are varied. However, when users purchase equipment, they can only select from the existing product specifications to meet the requirements, but sometimes due to special industries, general-purpose products can not fully meet the requirements of advanced products. , Ordering a special plane is not realistic. It can only be to reduce procurement goals and sacrifice their own interests.

—— Zhang Guojie, responsible engineer of Bohai Nengke Drill Pipe Co., Ltd.

CASING

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells or wellbore.


It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow

drilling fluid to circulate and extraction to take place

The oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the whole well during drilling and after well completion. Several layers of casing shall be used for each well according to different drilling depth and geological conditions. Cement shall be used for cementing after casing is put into the well. It is different from TUBING and drill pipe and cannot be reused. It is a disposable consumable material. Therefore, casing consumption accounts for more than 70% of all oil well pipes.

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or wellbore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place.


Surface casing


- Protects the well from contamination in shallow water and gas layers.


- Supports the wellhead equipment and sustains the weight of the other layers of casing.


Intermediate casing


- Isolates different layers of pressure to facilitate normal circulation of drilling fluid and protect the production casing.


- Intermediate casing facilitates the installation of blow-out preventers, anti-leakage devices and tailpipes in the well.


Production casing (oil string)


- It is the conduit through which oil and gas pass from a below surface reservoir.


- It protects the well and separates fluids into various layers.


First, green pipes are threaded on each end. The threading is then inspected and, if necessary, rethreaded to ensure that the thread accurately connects to the coupling. The threading type includes STC/BTC/LTC. The casing pipes are strengthened by surface treatment and are subject to various inspections, including drifting and hydrostatic tests before they are coated and packaged into casing.


Casing pipes are ordinarily produced with outside diameter sizes of 114.3 mm to 508.0 mm.

Casing,Api 5Ct Casing,Api Spec 5Ct Casing PipeApi 5Ct Pipe Oil Casing

ESASTSUN OILFIELD EQUIPMENT MANUFACTURING (CAMBODIA) CO., LTD , https://www.eastsuncambodia.com