Compared with general gas nitriding, the characteristics of ion nitriding are: 1 can shorten the nitriding cycle properly; 2 the nitriding layer is less brittle; 3 can save energy and ammonia consumption; 4 can not need nitriding part Shielded to achieve local nitriding; 5 ion bombardment has a purifying surface effect, can remove the passivation film on the surface of the workpiece, and can directly nitrite the stainless steel and heat-resistant steel workpiece. 6 layer thickness and tissue can be controlled. Ion nitriding has developed rapidly and has been used in workpieces such as machine screws, gears, and molds.
Nitrocarburizing is also called soft nitriding or low-temperature carbonitriding, that is, below the iron-nitrogen eutectoid transition temperature, so that the surface of the workpiece penetrates into the carbon while mainly infiltrating nitrogen. The fine carbide formed after carbon infiltration promotes the diffusion of nitrogen and accelerates the formation of high nitrogen compounds. These high nitrogen compounds in turn increase the solubility of carbon. The mutual promotion of carbon and nitrogen atoms accelerates the rate of infiltration. In addition, carbon can also reduce brittleness in nitrides. The compound layer obtained after nitrocarburizing has good toughness, high hardness, wear resistance, corrosion resistance and seizure resistance.
Commonly used nitrocarburizing methods are liquid method and gas method. The treatment temperature is 530 to 570 ° C, and the holding time is 1 to 3 hours. Early liquid salt baths used cyanide salts, and later appeared in a variety of salt bath formulations. There are two commonly used: neutral salt through ammonia and urea plus carbonate-based salts, but these reaction products are still toxic. The main gas mediums are: endothermic or exothermic gases (see controlled atmosphere) plus ammonia; urea thermal decomposition gas; organic solvents containing carbon and nitrogen, such as formamide, triethanolamine, etc.
Nitrocarburizing can not only improve the fatigue life, wear resistance, corrosion resistance and seizure resistance of the workpiece, but also has simple equipment, low investment, easy operation, short time and small distortion of the workpiece, and sometimes gives the workpiece a beautiful appearance. .
Expandable Container House become the main trend of future housing
Expandable container house have attracted much attention as a new type of housing construction, and container houses are also used as daily living houses in many regions. Moreover, this type of container house has also become a future residential trend, and its use advantages are also very obvious.
Good energy saving and environmental protection effect
The expandable container house granny house/small house is made of Eps Sandwich Panel, pu Sandwich Panel, aluminum alloy, galvanized steel structure and other materials. Such materials are not only convenient for construction, but also sustainable. Materials, recycling is relatively simple. Such materials can effectively reduce the generation of construction waste, and the raw materials can be recycled for many times. It is a high-quality housing material that truly achieves the purpose of environmental protection.
Cost-effective housing
Concrete buildings are not cheap to construct, and the construction time is long, and immediate occupancy is not possible. However, the fraud of the expandable container house is lower, and its own transportation cost is not high, and it can be used repeatedly in different locations. It is easy to install on site, and it is equipped with a kitchen, toilet, bedroom, living room, oven, microwave oven, and air conditioner. And other configurations, so in terms of building cost performance and comfort, container houses are indeed a good choice.
Strong scalability
The expandable container house can be expanded. Simply put, its space can be expanded according to your needs. If you need to increase the usable area, you only need 3-5 people to fold the wall panels for half an hour to double the area, and it is very convenient to operate. If you don't need the existing space and want to reduce a certain area, you can fold a part appropriately to meet the requirement of area reduction. At the same time, it can also be pulled away with a trailer, and camps can be set up anytime and anywhere. It is a proper mobile house, caravan park, and no construction qualification certificate is required.
Quality Assurance
As long as high-quality materials can be selected, the long-term use of expandable container houses is also guaranteed. But also pay attention to the daily inspection of container houses. If there are bathrooms, kitchens, etc. inside, you should also pay attention to waterproof and circuit problems, so that the use of container houses is safe and can meet the basic requirements of daily life. The service life of our extended container houses can reach 30 years, and they have been exported to the United States, Ordalia and many countries in the European Union.
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Henan Jinming Metal Material Co., Ltd. , https://www.jinminghouse.com