Recent Status Updates
Я предлагаю совместную реализацию Программы «Безопасный город»· 0 replies
Well + Luke + Castle МЫ ЗАЩИЩАЕМ ЧАСЫ И КАБЕЛИ В ИХ
Я разработчик и владелец патентов на специальные замки для люков Уэллса.
The Safe City program deals with the solution of Our common problem - the disappearance of manhole covers and dangerous open wells, which are still getting bigger on the streets.
The problem of open wells exists now practically in all the republics of the former CIS and our near and far abroad - England, Poland, USA, India, Bulgaria, China ...
We conduct basic negotiations with the Housing and Communal Services Departments of the Oblasts, cities and directly with the housing and utilities enterprises - Vodokanals and City Heating Networks. We are also negotiating with telecommunication companies - UkrTelecom, RosTelecom, Internet service providers, etc.
The cost of frequent purchases of new materials and components (hatches, cables, valves) for the proper and high-quality work of housing and public utilities, Telecom, the Internet, which are now very often lost, are big losses.
After the establishment of special locks on the hatches of the wells, the economic problems of the Cities are solved first of all - the covers of the hatches, which are expensive, will cease to disappear, the cable-conductor and communal products under them.
And most importantly, the number of injuries among people and car accidents will decrease.
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Linkedin https://www.linkedin.com/in/ дмитрий - родь
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You Tube видео демонстрация
Сайт городской газеты http://www.44.ua/article/969758
Buildig TECH https://building-tech.org/izobretatel-iz-ukrainy-predlozhil-deshevyj-sposob-borby-s-krazhej-ljukov-video/
Первый Городской Телеканал
Готовы к плодотворному сотрудничеству.
С уважением, руководитель проекта, президент «Безопасного города» Род Род Валентинович.
Т / Р . +380966297352; Электронная почта : bezopasgorod @ gmail . ком скайп : безопасгород
What is a Rigid-Flex PCBs· 0 replies
Rigid-Flex printed circuit boards are boards using a combination of flexible and rigid board technologies in an application. Most rigid flex boards consist of multiple layers of flexible circuit substrates attached to one or more rigid boards externally and/or internally, depending upon the design of the application. The flexible substrates are designed to be in a constant state of flex and are usually formed into the flexed curve during manufacturing or installation.
What Are the Benefits of Circuit Board(PCB) Prototyping?· 0 replies
We recommend you PCB prototyping service for function testing of new products prior to making a commitment to a full-production run. Benefits of developing PCB board prototype include:
• Rapidly test and correct designs if there is any mistake
After waiting over a week for your full boards, you’ll be eager to get them going in your applications. When you test your design beforehand with PCB prototypes, you can do just that.
• Potentially detect any design flaw in the early stages of your projects
The time to find out mistakes in your design is not when you have a full production run in your warehouse. PCB prototyping service allows you to spot any design problem in a few days, make adjustments and perfect the design before ordering your full run.
304 stainless steel and 316 stainless steel—What’s the difference?· 0 replies
Selecting the best grade for stainless steel investment casting can mean longer lasting performance, especially in challenging corrosive environments.304 and 316 are the two of the most widely used stainless steel casting grades in the world. For 304 stainless steels and 316 stainless steels,There is no such definition of “which is good” because different stainless steel materials have different uses.The difference between 304 stainless steel and 316 stainless steel is as below.
1-Different chemical composition:
304 is Gai’s stainless steel . Its material composition is OCr18Ni9. 304 Stainless steel： C ≤ 0.08 Ni 8.00 to 10.00 Cr 18.00 to 20.00, Mn <= 2.0 Si <= 1.0 S <=0.030P <=0.035.
316 is Austenitic stainless steel.The material composition is OOCr12Mo2Ti. 306 Stainless steel C≤0.08 Ni10.00～14.00 Cr16.00～18.00, Mo2.00—3.00 Mn<=2.0 Si<=1.0 S<=0.030 P<=0.035 And 306L stainless steel C≤0.03 Ni10.00～14.00 Cr16.00～18.00, Mo2.00—3.00 Mn<=2.0 Si<=1.0 S<=0.030 P<=0.035.It is a low carbon stainless steel with titanium-containing, resistant to alkali and acid (except medium containing chloride ions).
The Big difference between 304 and 316 is that 306 stainless steel has 2-3 more nickel than 304 stainless steel.
304-vs-316-stainless-steel 2. Performance is different:
304 steel can resist corrosion by sulfuric acid, phosphoric acid, formic acid and urea. Applicable to general water, control gas, wine, milk, CIP cleaning liquid and low occasions or no corrosive materials.
The 316L steel grade adds molybdenum based on 304 Steel. It can significantly improve its resistance to intergranular corrosion and oxide stress corrosion. It also reduces the hot cracking tendency during welding. It also has good resistance to chloride corrosion.
It is often used in applications of pure water, distilled water, medicines, sauces, vinegar, etc.With high hygienic requirements and strong media corrosion resistance.The price of 316L is almost twice than 304.
On Mechanical properties: 304 is better than 316L. Because 304, 316 has excellent corrosion resistance and heat resistance. It is widely used as stainless steel. 304,316 has similar strength and hardness.
The difference between them is that the corrosion resistance of 316 is much better than 304. The more important point is that molybdenum metal is added to 316. The molybdenum metal can improve its heat resistance prosperity.
3. Different maintenance methods:
We can use electroplating or oxidation-resistant metals to ensure the carbon steel surface, but this protection is only a film. If the protective layer is destroyed, the underlying steel begins to rust.
The corrosion resistance of stainless steel depends on the chromium element. When the amount of chromium added reaches 10.5%, the atmospheric corrosion resistance of stainless steel will increase significantly. But if the chromium content is higher, it still can improve certain corrosion resistance. But not obvious.
The reason is that this treatment changes the type of surface oxide to a surface oxide like that formed on pure chrome metal. But this oxide layer is very thin. Through it, you can directly see the natural luster of the steel surface. To give stainless steel a unique surface.If the surface is destroyed, the exposed steel surface will react with the atmosphere. This process is actually a self-repairing process. Re-forming this passivation film can continue to protect.
Therefore, all stainless steels have a common characteristic. The chromium content is above 10.5% and the preferred steel grade also contains nickel. Such as 304 .If the addition of molybdenum can further improve atmospheric corrosive. Especially against chloride-containing atmospheres. That is 316.
What is the 304 Stainless Steel Types and Applications?
304 Stainless Steel Types Different Applications Stainless Steel 304 (S30400):
Low-carbon modification of type 302 for restriction of carbide precipitation during welding. Chemical and food processing equipment; brewing equipment; cryogenic vessels; gutters; downspouts; flashings. Stainless Steel 304L (S30403): Extra-low-carbon modification of type 304 for further restriction of carbide precipitation during welding. Coal hopper linings; tanks for liquid fertilizer and tomato paste. What is the 316 Stainless Steel Types and Applications?
316 Stainless Steel Types Different Types’ Applications Stainless Steel 316 (S31600): Higher corrosion resistance than types 302 and 304; high creep strength. Chemical and pulp handling equipment; photographic equipment; brandy vats; fertilizer parts; ketchup cooking kettles; yeast tubs. Stainless Steel 316L (S31603): Extra-low-carbon modification of type 316 Welded construction where intergranular carbide precipitation must be avoided. Type 316 application requiring extensive welding. Stainless Steel 321 (S32100): Stabilized for weldments subject to severe corrosive conditions, and for service from 800 to 1600 F. Aircraft exhaust manifolds; boiler shells;process equipment; expansion joints; cabin heaters; fire walls; flexible couplings, pressure vessels. We are a professional stainles steel foundry in China with 22 years history.We can make all types of stainless steel castings, not only limited to 304 and 316, but can also make stainless steel investment castings with other grades, such as PH17-4, CG8M, 2205, ect. Any project or product about stainless steel casting, welcome contact us freely.
We are the lleading investment casting foundry for various metal components in 1997. And we have started our exporting business all over the world.Such as American, Japan, German,Australia, UK, Canada,ect.· 0 replies
Currently, our investment casting company has 2 units: one is foundry,Another one is CNC Machining Factory.There are total 310 workers in our factory, with 265 workers, 7 engineers, 23 QC man, 10 sales person, and 5 management.Via many years’ hard working,we are now have become one of the largest investment casting manufacturer and supplier
ChineseSpare.com is an e-commerce platform which is integration of Chinese spares sales and engineering services. China spare parts, products Manufactured in China. Since its establishment, relying on the Middle East countries’ engineering projects, we have mainly exported a large number of mining spares and on-site technical services support, such as Saudi Arabia, the United Arab emirates and other countries. Meanwhile, in the aspect of mining machinery spare parts, we have rich experience in export and transportation. We also have a deep cooperation and keep in good relationship with many domestic large-scale machinery manufactures and foreign well-known factories, distributors and agencies.· 0 replies
Considering about our customers’ purchasing needs, saving the delivery time, reducing management cost, we build and supply the E-commerce platform. Now we have nine types of products: General Mechanical Parts, Machined Parts, Mechanical Equipment & Assemblies, Electronic Driving, Electronic Components, Process Control & Instruments, Materials, Engineering Services and others. In order to provide more convenient, thoughtful, high-quality services for our customers, we set up the branches in China, Singapore and Middle East. Thanks for your inquiry.
We abide by honesty as root scrupulously, customer highest, service foremost to satisfy with our customers. We take the business order ”First-class quality, First-rate reputation” and consistently insist on the principle-“customer first” to serve our customers.