Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

932 results about "Cooling temperature" patented technology

Cooling Food. Cooling time starts at 135°F. Food may be left at room temperature until it drops to 135°F. Cool from 135°F to 70°F in 2 hours, then from 70°F to 41°F in 4 hours. If the temperature is more than 70°F in 2 hours, reheat to 165°F and start over. . Reheating can only be done.

Super-thick steel plate for low yield ratio buildings with 460 MPa grade yield strength and manufacturing method

The invention relates to a super-thick steel plate for low yield ratio buildings with 460 MPa grade yield strength and a manufacturing method, which belongs to the technical field of high strength low alloy construction steel. The steel pipe comprises the following components by weight percent: 0.14 to 0.18 percent of C, 0.35 to 0.45 percent of Si, 1.40 to 1.50 percent of Mn, 0.025 to 0.035 percent of Nb, 0.040 to 0.050 percent of V, 0.010 to 0.020 percent of Ti, smaller than 0.020 percent of P, and the balance Fe. The rolling technology is as follows: the heating temperature is 1220 to 1250 DEG C, the tapping temperature is 1200 to 1230 DEG C, and two stages (ausrenitic recrystallization region and ausrenitic non-recrystailization region) are used for controlling rolling. The heat treatment technology is as follows: steel plates, the thickness of which is larger than or equal to 80 mm, are obtained after controlled rolling and cooling are carried out on continuously cast bloom, a two-phase region is heated up to 800 to 850 DEG C and insulated for 10 to 20 minutes, and then water quenching is adopted and the final cooling temperature is controlled to be less than or equal to 100 DEG C; 450 to 600 DEG C tempering treatment is carried out on the quenched steel plates, and finally the high strength low alloy construction steel plates are obtained. The steel plate not only has excellent comprehensive mechanical properties, but also lowers the cost and reduces the waste of resources.
Owner:SHOUGANG CORPORATION

X80 level large-deformation resistance pipe line steel medium and heavy plate production method

The invention relates to a method for producing an X80 grade large deformation resistant pipeline steel medium plate. The economic component design with low carbon is adopted to perform controlling and rolling stages on ingot, namely rolling the grain refined zone and the non grain refined zone. The method comprises: firstly, air cooling and relaxing after finished rolling is performed so that the temperature of a steel plate before entering water and cooled is reduced below the phase change point Ar3 between 30 and 50 DEG C, and 50 to 70 percent of austenite in the relaxing process is converted into proeutectoid ferrite; and secondly, laminar flow cooling is performed on the steel plate within the range of the cooling speed between 20 and 35 DEG C per second, the finished cooling temperature is controlled within the range of between 250 and 400 DEG C; and in the water cooling process, the remaining austenite is converted into bainite structure, and proeutectoid ferrite + bainite double-phase structure is obtained. The intensity and the plasticity index of the finished product satisfy the following requirements: the yield strength Rt0.5 is 530 to 630MPa, the intensity of tension Rm is 625 to 825 MPa, the yield ratio Rt0.5/Rm is less than or equal to 0.80, and the homogeneous deformation tensile stretch UEL is more than or equal to 10 percent.
Owner:UNIV OF SCI & TECH BEIJING

Manufacturing method of HB500 grade low-manganese wear-resistant steel plate

The invention discloses a manufacturing method of a HB500 grade low-manganese wear-resistant steel plate. The manufacturing method comprises the specific steps as follows: continuous casting billets meeting the requirements are selected; the rolling process is conducted: the heating temperature is 1100 to 1200 DEG C, the rolling is conducted at a crystallization region and an austenite non-recrystallization region by adopting austenite, the final rolling temperature is 1000 to 1050 DEG C, and the billets are roughly rolled into intermediate billets of 1.7 to 2.0 times the thickness; the finish rolling starting temperature is 850 to 920 DEG C, a laminar cooling manner is adopted, the final cooling temperature is 600 to 700 DEG C, and the cooling rate is 10 to 20 DEG C/S; the quenching process is conducted: the steel plate heating temperature is 860 to 940 DEG C, the heat preservation time is 10 to 30min, and the billets are cooled to a normal temperature at a cooling speed of 40 DEG C/S; and the tempering process is conducted: the quenching steel plate heating temperature is 150 to 300 DEG C, the billets are loaded to a cooling bed to be air-cooled after the heat of the billets is preserved for 1 to 3 hours, and then the HB500 grade low-manganese wear-resistant steel plate is obtained. The HB500 grade low-manganese wear-resistant steel plate has the advantages of high hardness, high strength and high toughness, and is suitable for being used in bulldozers, loaders, excavators, dump trucks and various mining machines.
Owner:NANJING IRON & STEEL CO LTD +1

High crack-arresting toughness steel plate with yield strength of 500MPa and production method thereof

The invention provides a high crack-arresting toughness steel plate with yield strength of 500MPa and a production method thereof. The chemical components of steel comprises the following components in percentage by weight: 0.04-0.08% of C, 0.10-0.5% of Si, 0.8-1.6% of Mn, not more than 0.02% of P, not more than 0.01% of S, 0.03-0.065% of Al, not more than 0.005% of N, 0.005-0.05% of Nb, 0.005-0.03% of Ti, 0.0005-0.003% of B, not more than 0.004% of Ca, and the balance of Fe and avoidless impurities. The preparation method comprises the steps of roughing in an austenite re-crystalline region in a first stage, wherein the rolling temperature is 1000-1130 DEG C, the total reduction rate in the re-crystalline region is greater than or equal to 50%; cooling a rolled steel plate quickly to 580-530 DEG C at a rate of 10 DEG C/s; rolling in a non-re-crystalline region in a second stage when the temperature of the surface of the steel plate is 720-770 DEG C, wherein the accumulated deformation is greater than or equal to 50%, the finish rolling temperature is 700-740 DEG C; and water-cooling after rolling, wherein the cooling rate is 5-15 DEG C/s, and the final cooling temperature is 460-560 DEG C. The high crack-arresting toughness steel plate provided by the invention has the characteristics of high strength, high toughness, inhibition of crack formation and expansion and the like, and meets the performance requirements of special part members of large container ships.
Owner:ANGANG STEEL CO LTD

Low-cost acid resistant pipeline steel hot-rolled plate and manufacturing method thereof

The invention discloses a low-cost acid resistant pipeline steel hot-rolled plate and a manufacturing method thereof. The hot-rolled plate consists of the following components in percentage by weight: 0.04 to 0.10 percent of C, 0.05 to 0.50 percent of Si, 1.00 to 1.70 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.002 percent of S, less than or equal to 0.08 percent of Nb, 0.005 to 0.030 percent of Ti, 0.010 to 0.050 percent of Als, 0.0010 to 0.0040 percent of Ca, less than or equal to 0.0060 percent of N, less than or equal to 0.0002 percent of H, less than or equal to 0.0010 percent of O, and the balance of Fe and inevitable impurities. The nonmetallic inclusions A/B/C/D are less than or equal to grade 2.0, and the pearlite belt tissues are less than or equal to grade 2.0. The manufacturing method for the hot-rolled plate is characterized by comprising the following steps of: directly feeding the components into a heating furnace at the temperature of between 500 and 850 DEG C after continuous casting is finished to perform heating, and discharging the heated product at the temperature of between 1,150 and 1,250 DEG C to perform rolling; controlling rolling of a rough mill and a finishing mill at two stages, wherein the final rolling temperature of rough rolling is between 950 and 1,050 DEG C, the final rolling temperature of finish rolling is between 770 and 870 DEG C, and the finish rolling compression ratio is more than 60 percent; and controlling cooling by adopting a laminar flow cooling device after rolling, wherein the cooling speed is 8 to 20 DEG C per second, and the final cooling temperature is between 550 and 700 DEG C.
Owner:ANGANG STEEL CO LTD

High-performance building structure refractory steel plates and manufacturing method thereof

The invention discloses high-performance building structure refractory steel plates and a manufacturing method thereof. The high-performance building structure refractory steel plate comprises the following chemical components in percentage by weight: 0.02 to 0.12 percent of C, 0.05 to 0.50 percent of Si, 0.08 to 1.50 percent of Mn, 0.010 to 0.050 percent of Nb, 0.010 to 0.040 percent of Ti, 0.010 to 0.050 percent of Als, 0.20 to 0.60 percent of Cr, 0.20 to 0.40 percent of Mo, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, less than or equal to 0.0040 percent of N, less than or equal to 0.0020 percent of O and the balance of Fe and inevitable impurities. The production process of the high-performance building structure refractory steel plates is characterized in that: the steel blank heating temperature is 1,100 to 1,250 DEG C; the heating time is 60 to 110s/cm; two-stage controlled rolling is adopted; the final rolling temperature is kept between 800 and 900 DEG C; cooling is started 30 to 120 seconds later after final rolling; the final cooling temperature is kept between 500 and 750 DEG C; the steel plates are stacked quickly, cooled slowly and kept at a constant temperature; the stacking temperature is kept between 650 and 300 DEG C; and the temperature is kept for 10 to 24 hours. The plates have the characteristics of simple chemical components, low cost, and high refractability.
Owner:ANGANG STEEL CO LTD

Hot-rolled steel plate for ocean riser with low cost and high performance and production method thereof

The invention discloses a hot-rolled steel plate for an ocean riser with low cost and high performance and a production method thereof. The chemical components of the steel plate comprise C 0.04-0.10%, Si 0.10-0.35%, Mn 1.55-1.85%, Nb 0.02-0.08%, Ti 0.008-0.020%, Al 0.010-0.040%, P less than or equal to 0.020%, S less than or equal to 0.003%, Mo less than 0.20%, Cu less than or equal to 0.25%, Ni less than or equal to 0.30%, Cr less than or equal to 0.25%, N less than or equal to 0.008%, and the balance being Fe and unavoidable impurities, wherein Al/N is greater than or equal to 3, Ni+Cu+Mo+Cr is less than or equal to 0.70%, Nb+Ti is less than or equal to 0.09%, and Ti/N is equal to 2.5-5. CEIIW is 0.40-0.45%, CEPCM is 0.16-0.21%, casting blank heating temperature is 1,160-1,230 DEG C, four-stage heating is adopted, rough rolling temperature is 980-1,120 DEG C, fine rolling temperature is 790-900 DEG C, cooling temperature after rolling is 750-800 DEG C, cooling speed is 5-35 DEG C/s, and final cooling temperature is 430-520 DEG C. The steel plate of the invention has yield strength above 555 MPa, endwise tensile strength above 630 MPa, good cracking resistance, corrosion resistance and fatigue resistance, good comprehensive property, and low cost.
Owner:ANGANG STEEL CO LTD

Bag with cooler compartment and uses thereof

The present invention provides a bag with a cooler compartment that can store perishable food or medicinal items with generous storage compartments in the interior and on the exterior front, back and sides of the bag. The cooler compartment is lined with thermal plastic lining to maintain cool temperature and is easily washable to clean up after spills. The cooler compartment is flexible and can be increased in size to accommodate larger items. Security features have been added to the bag, so that valuables can be carried safely in the padded exterior back compartments. All exterior and interior compartments feature quick access and ease of use through the use of double-headed zippers, which allow opening of the compartments in either direction. The bag can be worn on the back and is secured there by two padded shoulder straps, which individually have a hook for keys and a mesh pocket for a cell phone for added convenience.
Another embodiment of the bag with a cooler compartment is smaller in size and has an adjustable shoulder strap for easier carrying. The cooler compartment is lined with washable thermal plastic lining. The cooler compartment is flexible and can be increased in size to accommodate larger items. Four exterior compartments are provided, of which one is a mesh pocket and three are zippered compartments. The interior compartment is zippered and has two additional storage compartments to further organize the interior area.
Owner:MEN JHENNA

High-strength economical X70 pipeline steel hot-rolling flat plate and production method thereof

The invention provides a high-strength economical X70 pipeline steel hot-rolling flat plate and a production method thereof. The high-strength economical X70 pipeline steel hot-rolling flat plate comprises the following chemical components: 0.02-0.08 percent of C, 0.10-0.35 percent of Si, 1.40-1.70 percent of Mn, not more than 0.020 percent of P, not more than 0.005 percent of S, 0.04-0.07 percent of Nb, 0.008-0.030 percent of Ti, 0.02-0.045 percent of Als and the balance of Fe and unavoidable impurities. The production method comprises the steps of smelting, continuous casting and hot rolling and is characterized in that the heating temperature of a hot-rolling plate blank is 1,160-1,280 DEG C; the rough rolling temperature is 1,010-1,150 DEG C, and the finish rolling temperature is 830-950 DEG C; after the plate blank is rolled, the plate blank is subjected to control cooling; the final cooling temperature is 300-600 DEG C, the cooling speed is controlled to be 15-30 DEG C/S, and then the plate is air-cooled to room temperature. The invention has low steel alloy content, no Mo and V, low production cost and high mechanical performance, mouldability and welding performance and is suitable for manufacturing a large-diameter X70 pipeline steel pipe.
Owner:ANGANG STEEL CO LTD

Method for controlling medium plate quenching technology

The invention discloses a method for controlling a medium plate quenching technology. The method comprises formulation of steel plate quenching strategies, model calculation of quenching parameters and formulation of quenching regulations, namely comprises the following steps of: according to steel plate planning information and model parameter information, automatically selecting one of four quenching manners, namely water cooling, haze cooling, strong wind cooling and air cooling, and formulating corresponding cooling strategies; calculating a comprehensive heat exchange coefficient of the surface of the steel plate according to the structural size of cooling equipment and control parameter initialized cooling parameters; calculating the temperature drop of the steel plate according to a heat conducting equation by combining a thermo-physical parameter model, and continually optimizing the quenching parameters till the cooling rate and the final cooling temperature reach target values; and finally performing structure property analysis and cooling regulation formulation, and sending the calculated regulations to a database, a programmable logic controller (PLC) and an interface. The method is flexible in cooling strategy formulation and high in cooling regulation calculation precision, and well solves the problems that the control precision of the medium plate quenching process is low, the performance of the quenched steel plate is unqualified and the like.
Owner:NORTHEASTERN UNIV

Low-carbon equivalent weight high-strength thick steel plate with excellent low-temperature toughness and manufacture method

The invention discloses a low-carbon equivalent weight high-strength thick steel plate with excellent low-temperature toughness and a manufacture method. The steel plate comprises the following chemical components in percentage by weight: 0.090-0.120 percent of C, 1.20-1.60 percent of Mn, 0.10-0.40 percent of Si, not more than 0.015 percent of P, not more than 0.005 percent of S, 0.010-0.030 percent of Nb, 0.010-0.030 percent of V, 0.020-0.035 percent of Al and the balance of Fe and unavoidable impurities. In the rolling process, the heating temperature of a continuous casting blank with the thickness of 220-260mm is 1,200-1,240 DEG C, the heat preservation time is 240-270 minutes, and the discharge temperature is 1,180-1,220 DEG C; and the rolling control at two phases is adopted, the laminar flow cooling is adopted after rolling, the final cooling temperature is 625-725 DEG C, the cooling rate is 5-10 DEG C/s, and the high-temperature offline temperature is 400-450 DEG C. The thick steel plate has low carbon equivalent weight, favorable comprehensive mechanical performance, excellent low-temperature impact toughness, no heat treatment and low production cost and adopts a rolling and cooling control process.
Owner:NANJING IRON & STEEL CO LTD +1

System, method and device for monitoring air conditioner in communication room

The embodiment of the invention provides a system, method and device for monitoring an air conditioner in a communication room, and aims to solve the problems of great granularity of monitoring range, long monitoring period, single evaluation standard and limited adjusting effect for the existing monitoring technology for the air conditioner in the communication room. According to the temperature information from a temperature sensor at the position of an air inlet of a machine frame of each communication equipment, the temperature information from a temperature sensor at the position of an air outlet of the machine frame of each communication equipment, and the air speed information from an air speed detector, the actual cooling capacity of an air conditioner unit is determined by a server; the supply current supplied by a power system to the communication equipment is obtained from a power environment monitoring system in the communication room, and the total heating capacity of the communication equipment is determined according to the supply current; according to the determined total heating capacity of the communication equipment, the actual cooling capacity of the air conditioner unit, and the preset rated cooling capacity of the air conditioner unit, the actual energy consumption of the communication room is determined; according to the actual energy consumption of the communication room and the preset energy consumption standard, the air conditioner unit is controlled to adjust the air inlet capacity of the communication room or the cooling temperature of the air conditioner.
Owner:CHINA MOBILE GROUP SHAIHAI

Rolling and cooling technology method for reducing GCR15 bearing steel zonary carbide level

The invention discloses a rolling and cooling technology method for reducing GCR15 bearing steel zonary carbide level, which comprises the following steps: carrying out high temperature diffusion annealing after the die casting and the continuous casting of molten steel, keeping the temperature at 1260 DEG C for 1 to 3 hours, cogging blank into a slab or a square billet through blooming after the diffusion annealing, rolling the steel slab on a plank or a rod and wire mill in a heating furnace at the temperature of 1150 to 1200 DEG C for 1 to 2 hours in a multi-pass manner to roll into a finished steel product, wherein the roll beginning temperature of the rolling is not lower than 1120 DEG C, and the roll finishing temperature is not lower than 1020 DEG C, cooling through water immediately after the rolling, wherein the cooling temperature is not lower than 1000 DEG C, cooling the water to 620 to 660 DEG C, wherein the cooling speed is not lower than 50 DEG C per second, ascending the temperature to 780 DEG C along with the furnace by a spheroidizing annealing system to preserve heat for 40 minutes, and then cooling to the temperature of 650 DEG C to draw and wind-cool at the speed of 20 DEG C per second. Through the adoption of the bearing steels manufactured by the technology method, the level of the zonary carbide can be eliminated or reduced, and the requirement of the Chinese national standard can be well satisfied.
Owner:BAOSHAN IRON & STEEL CO LTD

Accelerated cooling process method carried out after steel plate normalizing

InactiveCN101831532ACool evenlyRealize different cooling speed controlFurnace typesHeat treatment furnacesLaminar coolingAlloy
The invention belongs to cooling technologies carried out after thermal treatment in steel production, and relates to an accelerated cooling process method carried out after steel plate normalizing. In the specific process method, the normalized steel plate with the thickness of 4-120 mm is heated to 850-950 DEG C in a thermal treatment furnace; and then the steel plate is delivered into an accelerated cooling area to cool by a conveying roller bed, wherein the cooling speed is controlled within 2-20 DEG C/s, and the final cooling temperature is controlled within 400-700 DEG C. The cooling method is the combination of aerial fog cooling and laminar flow cooling or the combination of the aerial fog cooling and spraying cooling, wherein the pressure of the laminar cooling water or the spraying cooling water is 0.10-0.50 MPa, the pressure of the air fog cooling water is 0.10-0.60 MPa, and the pressure of the aerial fog cooling gas is 0.15-0.80 MPa. By adopting the steel plate produced by the accelerated cooling process carried out after the normalizing, the structure is obviously refined, the growth of the particles of the precipitated matters is inhibited, the strength and toughness of the steel plate are enhanced, or the equivalent strength and toughness is realized under the condition of less alloy content.
Owner:UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products