Yield strength of fine-rolled rebar refers to the yield limit of fine-rolled rebar when yielding phenomenon occurs, that is, the stress to resist trace plastic deformation. Greater than this limit of external force, will make the parts permanent failure, can not be recovered. The yield strength of fine-rolled rebar are…
1.The components of magnets are iron, cobalt, nickel and other atoms, the internal structure of its atoms is relatively special, itself has a magnetic moment Classification: permanent magnets, soft magnets. Application areas: information storage, used in engines, creative product design, levitation tables, exercise equipment, gravity-sensing concept watches, etc. 2. Spider…
Hot Resource Temperature Manner of utilization 1 Slag Canister The surface of the slag tank keeps the temperature 200℃-300℃ for a long time. Specially designed simple-walled slag tanks for the production of charred wood for wood construction and furniture. Also used for material drying. 2 Baking bag flame Horizontal overflow…
Ultra-low emission technology of flue gas for chain grate machine and rotary kiln pelletizing is one of the national green low-carbon advanced technology achievements, applicable to the flue gas treatment in the process of rotary kiln pellet production. This technology utilizes selective non-catalytic reduction (SNCR) and selective catalytic reduction (SCR)…
For different shape of steel proucts, the dimensions and surface quality of steel products can be detected with different devices. Round shape section Steel with round cross-section, including high wire, steel wire, steel pipe, round steel, round bar and other steel, the detection of outer diameter and ellipticity adopts the…
Dedescaling nozzle as a key component affects the surface quality of hot-rolled products directly, if the descaling nozzle is not used properly, the surface of the product is easy to press into the iron oxide or produce black marks and other surface quality problems; will also increase roll consumption. When the high-temperature slab is subjected to high-pressure…
The application of high-strength hot-rolled steel bars can decrease the total amount of steel bars and reduce carbon emissions accordingly. Some common quality questions of this kind of products needs to overcome: 1) Unstable nitrogen content in the steel and unreasonable vanadium to nitrogen atomic ratio, resulting in high vanadium…
The size of the grain can be expressed by the number of grains per unit volume, the more the number, the finer the grain. Experiments have shown that fine-grained metals at room temperature have higher strength, hardness, plasticity and toughness than coarse-grained metals. This is because fine grains by external…
Strip steel is extremely versatile, mainly used in the automotive industry, machinery manufacturing industry, construction, steel structures, daily hardware and other fields, and is the raw material for cold-rolled strip, cold-formed steel, welded steel pipes and other steel. Strip steel has the advantages of high dimensional accuracy, good surface quality,…
Inspection and analysis of the mechanical and technical properties, metallographic organization and chemical composition of steel is an important means to ensure the quality of the product, in order to ensure the safe and reliable use. The mechanical and process performance tests mainly include various hardness tests, tensile tests, compression…
