610MPa automobile girder steel and production method thereof

The invention discloses a 610MPa automobile girder steel, and the weight percentage (wt%) of the chemical composition of the steel is as follows: C: 0.08 to 0.12; Si: 0.10 to 0.30; Mn: 1.40 to 1.60; P: less than or equal to 0.010; S: less than or equal to 0.005; Nb: 0.040 to 0.060; V: 0.020 to 0.030; Ti: 0.010 to 0.030; Al: 0.030 to 0.060; Ca: tiny amount; and the rest is iron and residual trace impurities. The invention also discloses a production method for the 610MPa automobile girder steel, which adopts a 2250mm hot rolling line, and a continuously cast slab is heated to 1200 DEG C to 1250 DEG C; after rough rolling, the temperature is 1000 DEG C to 1050 DEG C, the continuously cast slab enters a finishing mill via a heat cover and is rolled, the finish rolling temperature is 820 DEG C to 880 DEG C, and the rolled steel coil is rapidly cooled to 530 DEG C to 580 DEG C by way of laminar cooling, and is then coiled. Since the chemical composition and the production technique are adopted ...

Central control device of well drilling winch in vertical shaft construction

The invention discloses a central control device of a vertical shaft construction well-drilling winch, comprising a central control selection button SB5 inside a central control cabinet, a local control selection button SB6 and a plurality of single vertical shaft construction well-drilling winch selection buttons SBn and a plurality of single vertical shaft construction well-drilling winch control devices. The central control device connects the plurality of single vertical shaft construction well-drilling winch control devices into an integer by one single vertical shaft construction well-drilling winch control device, replaces multi-men synchronous operation with one-man operation, not only has good operation synchronicity and safety, but also has manpower saving, thereby being the central control device of the vertical shaft construction well-drilling winch, which is more advanced than a control device of the traditional vertical shaft construction well-drilling winch.

High-yield strength (450MPa), high-strength and weather-resistant steel plate and production method thereof

The invention discloses a high-yield strength (450MPa), high-strength and weather-resistant steel plate produced by using the optimized composition design of single micro-alloyed Nb based on low-carbon manganese steel and using the TMCP (thermo-mechanical control process) based on the converter-CSP (compact strip production) shortened production process. The steel plate comprises the following components by mass percentage: 0.040% to 0.080% of C, 0.15% to 0.35% of Si, 1.20% to 1.40% of Mn, lower than or equal to 0.025% of P, lower than or equal to 0.008% of S, 0.015% to 0.035% of Nb, 0.25% to0.40% of Cu, 0.12% to 0.35% of Ni, 0.45% to 0.75% of Cr, 0.020% to 0.045% of Als, and Fe and unavoidable impurities in balancing amount. The production method comprises the following steps: molten iron pre-treating, converter smelting, LF (ladle furnace) refining, and CSP continuous casting and roller. The invention has the advantages of simple process, stable performance, good overall mechanical properties ...

240MPa-level hot-rolled pickled steel plate for single-sided enameling and production method of 240MPa-level hot-rolled pickled steel plate

The invention provides a 240MPa-level high-strength deep-drawn hot-rolled pickled steel plate for single-sided enameling. The 240MPa-level high-strength deep-drawn hot-rolled pickled steel plate comprises the following chemical components in percentage by mass: 0.35-0.65% of Mn, 0.015-0.045% of Als, 0.030-0.060% of Ti, 0.008-0.016% of S, less than or equal to 0.018% of C, less than or equal to 0.05% of Si, less than or equal to 0.020% of P and less than or equal to 0.006% of N. According to the component design and process control for the type of the steel provided by the invention, the steel provided by the embodiment has the yield strength of larger than equal to 240MP and the elongation percentage of over 35% and has no yield. An enameled product prepared from the enamel produced by using a controlled rolling and controlled cooling technology through a wet-process or electrostatic single-sided enameling process is free of fish-scaling, good in sealing performance and capable of realizing ...

High-yield strength (450MPa), high-strength and weather-resistant steel plate and production method thereof

The invention discloses a high-yield strength (450MPa), high-strength and weather-resistant steel plate produced by using the optimized composition design of single micro-alloyed Nb based on low-carbon manganese steel and using the TMCP (thermo-mechanical control process) based on the converter-CSP (compact strip production) shortened production process. The steel plate comprises the following components by mass percentage: 0.040% to 0.080% of C, 0.15% to 0.35% of Si, 1.20% to 1.40% of Mn, lower than or equal to 0.025% of P, lower than or equal to 0.008% of S, 0.015% to 0.035% of Nb, 0.25% to 0.40% of Cu, 0.12% to 0.35% of Ni, 0.45% to 0.75% of Cr, 0.020% to 0.045% of Als, and Fe and unavoidable impurities in balancing amount. The production method comprises the following steps: molten iron pre-treating, converter smelting, LF (ladle furnace) refining, and CSP continuous casting and roller. The invention has the advantages of simple process, stable performance, good overall mechanical properties ...

Pipeline maintenance equipment for municipal water supply and drainage

The invention relates to the technical field of municipal water supply and drainage, and discloses municipal water supply and drainage pipeline maintenance equipment which comprises a fan-shaped opening groove, an end glue injection type sealing structure, a sliding type clamping structure, an embedded type sealing structure and an air exhaust flowing structure. And in the process that gas in the annular sleeving cavity is pumped out, gas-liquid separation can be carried out on the pumped gas. According to the pipeline maintenance equipment for municipal water supply and drainage, sealing treatment can be conducted on the periphery of the butt joint position of a drainage pipeline, then the pipeline is immersed in pure and transparent liquid, gas in the pipeline is pumped out through gas pumping equipment, and due to the effect of atmospheric pressure, the pipeline is not damaged; according to the drainage pipeline, sewage or gas at the butt joint position of the drainage pipeline can enter ...

610MPa automobile girder steel and production method thereof

The invention discloses a 610MPa automobile girder steel, and the weight percentage (wt%) of the chemical composition of the steel is as follows: C: 0.08 to 0.12; Si: 0.10 to 0.30; Mn: 1.40 to 1.60; P: less than or equal to 0.010; S: less than or equal to 0.005; Nb: 0.040 to 0.060; V: 0.020 to 0.030; Ti: 0.010 to 0.030; Al: 0.030 to 0.060; Ca: tiny amount; and the rest is iron and residual trace impurities. The invention also discloses a production method for the 610MPa automobile girder steel, which adopts a 2250mm hot rolling line, and a continuously cast slab is heated to 1200 DEG C to 1250 DEG C; after rough rolling, the temperature is 1000 DEG C to 1050 DEG C, the continuously cast slab enters a finishing mill via a heat cover and is rolled, the finish rolling temperature is 820 DEG C to 880 DEG C, and the rolled steel coil is rapidly cooled to 530 DEG C to 580 DEG C by way of laminar cooling, and is then coiled. Since the chemical composition and the production technique are adopted ...

Steel plate and preparation method thereof

The invention relates to a steel plate and a preparation method thereof. The steel plate is a 600MPa grade cold-rolled dual-phase steel plate with low yield ratio and comprises the following components by mass percent: 0.05-0.09% of C, 0.2-0.5% of Si, 1.4-1.8% of Mn, 0.020-0.060% of Als, not more than 0.4% of Cr, not more than 0.02% of P, not more than 0.01% of S and the balance of Fe and inevitable impurities. The method comprises the following steps: smelting; continuous casting; hot rolling; acid pickling and cold rolling; continuous annealing; finished product obtaining. The steel plate has the beneficial effects that on the basis of a C-Mn system, the contents of C and alloying elements are reduced to improve the weldability of the material; the content of Si in the design is lower and meanwhile high hydrogen annealing is adopted in the continuous annealing production process, so that the produced dual-phase steel has better surface quality; on the basis, the distribution state of ...

High-strength cold-roll steel sheet for inner container of water heater and continuous annealing technology for same

The invention discloses a high-strength cold-roll steel sheet for an inner container of a water heater. The high-strength cold-roll steel sheet comprises the following main chemical components in percentage by weight: 0.04-0.1% of C, not more than 0.06% of Si, 0.5-1% of Mn, not more than 0.045% of P, not more than 0.035% of S, 0.02-0.08% of Al, 0.015-0.06% of Nb, 0.015-0.075% of Ti and not more than 0.005% of N. The invention further discloses a continuous annealing technology used in a manufacturing technological process for the high-strength cold-roll steel sheet. By adopting the technical scheme, the yield strength and the elongation percentage of low-carbon-type steel for the inner container of an electric water heater are respectively ensured to be not smaller than 380MPa and not smaller than 20%, the yield strength is not smaller than 329MPa after the low-carbon-type steel for the inner container of the electric water heater is subjected to enamelling and heat preservation for 10 ...

Mine safety monitoring application technology

The invention discloses a mine safety monitoring application technology comprising an elevator integrative monitoring system, power monitoring, television monitoring and mine safety generation monitoring. The elevator integrative monitoring system selects an industrial computer and a programmable controller (PLC) to carry out network communication and uses monitoring software to monitor a safety loop, an elevator real-time running state, real-time running speed, elevating depth, elevating signals, error display and memory, data storage and multi-picture inquiry in real time. The elevator integrative monitoring system firstly selects the industrial computer and the programmable controller (PLC) to carry out the network communication, uses the monitoring software to monitor multi-pictures in real time, is convenient to operate, debug and check and saves error processing time. The mine safety production monitoring system realizes continuous operation and ensures safety production.

Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof

The invention discloses a low alloy steel for resisting sulfuric acid dew point corrosion, which comprises the following components in mass percent: less than or equal to 0.10% of C, 0.10-0.40% of Si, 0.40-1.00% of Mn, less than or equal to 0.025% of P, less than or equal to 0.035% of S, 0.025-0.040% of Als, 0.10-0.30% of Ni, 0.30-0.50% of Cu, 0.50-1.00% of Cr, 0.04-0.15% of Sb and the balance of Fe and inevitable impurity elements. The production method comprises the steps of steel making, continuous casting and hot rolling, wherein in the steel making process, a ladle refining furnace (LF furnace) is used for refining, FeS Lines are fed before the LF furnace is out of the station, [S] is adjusted to a target value, and the weak stirring time is longer than or equal to 12 min; in the continuous casting process, the temperature of a pouring box is controlled above liquidus temperature (15-30 DEG C); and in the hot rolling process, the controlled rolling and controlled cooling process is ...

Process of producing semi-technological electrical steel

Process for producing deep-drawing Low-carbon aluminium-killed steel based on CSP technology

Mine safety monitoring application technology

The invention discloses a mine safety monitoring application technology comprising an elevator integrative monitoring system, power monitoring, television monitoring and mine safety generation monitoring. The elevator integrative monitoring system selects an industrial computer and a programmable controller (PLC) to carry out network communication and uses monitoring software to monitor a safety loop, an elevator real-time running state, real-time running speed, elevating depth, elevating signals, error display and memory, data storage and multi-picture inquiry in real time. The elevator integrative monitoring system firstly selects the industrial computer and the programmable controller (PLC) to carry out the network communication, uses the monitoring software to monitor multi-pictures in real time, is convenient to operate, debug and check and saves error processing time. The mine safety production monitoring system realizes continuous operation and ensures safety production.

Ultralow-carbon aluminum-killed steel plate and production method thereof

The invention discloses an ultralow-carbon aluminum-killed steel plate and a production method thereof. The steel plate comprises the following chemical components: at most 0.010% of C, at most 0.060% of Si, 0.10%-0.60% of Mn, at most 0.035% of P, at most 0.035% of S, 0.020%-0.080% of Al and at most 0.0050% of N. The production method comprises the following steps: hot-rolling, cold-rolling, continuous annealing and the like to produce the ultralow-carbon deep-drawing aluminum-killed steel plate. The mechanical properties of the cold-rolled steel plate produced by the method are as follows: the yield strength is lower than 180 MPa, the tensile strength is 270-250 MPa, and the elongation percentage is greater than 40%. The cold-rolled steel plate can satisfy the drawing requirement for interior and exterior structural members of the automobile; and the production method does not need to add Ti, Nb or any other alloy element, thereby lowering the production cost.

400MPa high-strength and high-forming-performance cold rolled steel plate and production method thereof

The invention discloses a 400MPa high-strength and high-forming-performance cold rolled steel plate, which mainly comprises the following chemical components in percentage by weight: less than or equal to 0.004 percent of C, 0.1 to 0.4 percent of Si, 0.1 to 1.0 percent of Mn, 0.01 to 0.1 percent of P, less than or equal to 0.030 percent of S, 0.01 to 0.05 percent of Al, 0.01 to 0.1 percent of Ti,less than or equal to 0.005 percent of N and 0.0004 to 0.0012 percent of B. By combining rolling, cold rolling and continuous annealing processes, the yield strength of the cold rolled plates reaches210 to 310MPa, the tensile strength is more than or equal to 400Mpa, the coefficient of elongation is more than or equal to 32 percent, the n90 content is more than or equal to 0.15 percent and the r90 content is more than or equal to 1.8; desirable plate shape, surface quality, impact performance and welding performance are ensured; overhigh requirements on production processes are avoided, and the ...

High-strength thick-specification tubular pile steel and manufacturing method thereof

The invention discloses high-strength thick-specification tubular pile steel, which comprises the following chemical compositions in percentage by weight: 0.12 to 0.16 percent of C, 0.20 to 0.50 percent of Si, 1.30 to 1.50 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.010 percent of S, 0.15 to 0.40 percent of Al, 0.020 to 0.030 percent of Nb, trace Ca, and the balance of iron and residual trace impurities. The invention also discloses a method for manufacturing high-strength thick-specification tubular pile steel plates, which comprises the following steps of: by adopting a 2,250mm hot rolling production line, heating continuous castings to the temperature of between 1,180 and 1,220 DEG C; making the continuous castings enter a finishing mill through a heat holding cover for rolling, wherein the finishing temperature is between 840 and 880; and quickly cooling the rolled steel coils through laminar cooling to the temperature of between 610 and 650 DEG ...

Hot-rolled and pickled steel plate for 210MPa-grade single-sided enamel and production method thereof

The invention provides a high-strength deep drawing hot-rolled and pickled steel plate for 210MPa-grade single-sided enamel. The high-strength deep drawing hot-rolled and pickled steel plate comprises the following chemical components in percentage by weight: 0.20-0.50% of Mn, 0.015-0.045% of Als, 0.030-0.060% of Ti, 0.008-0.016% of S, not more than 0.018% of C, not more than 0.05% of Si, not more than 0.020% of P and not more than 0.006% of N. According to the steel type component design and the process control, provided by the invention, the yield strength of the embodiment steel is not less than 225MP, the elongation rate is more than 38%, and the yield is avoided. An enamel product manufactured from the enamel produced by matching the high-strength deep drawing hot-rolled and pickled steel plate provided by the invention with a controlled rolling and controlled cooling technology through a wet method or electrostatic single-sided enamel process has no fish-scaling, the adherence strength ...

Organic solid lubrication galvanized steel plate and manufacturing method thereof

The invention relates to an organic solid lubrication galvanized steel plate and a manufacturing method thereof. The organic solid lubrication galvanized steel plate comprises a galvanized steel plate and one or multiple layers of organic solid lubrication membranes, wherein the organic solid lubrication membranes are positioned on the upper surface and/or lower surface of the galvanized steel plate. A roller coating process is adopted to coat the solid lubrication membranes on the surface of the galvanized steel plate. The surface friction coefficient of the organic solid lubrication galvanized steel plate with excellent thermal resistance is less than or equal to 0.1, the color of the surface of the organic solid lubrication galvanized steel plate is not changed after the galvanized steel plate is baked at 190 DEG C for 30 minutes, the coating property of the organic solid lubrication galvanized steel plate can be greater than internal 4B, the white rust caused by salt mist corrosion ...

Production method of colorful coating steel band for thermal transfer printing

A production method of a colorful coating steel band for thermal transfer printing comprises the following steps: choosing a basic plate, cleaning, passivating, firstly coating with priming paint/back paint, curing the priming paint, precisely coating with finish paint, curing the finish paint, and reeling. The production method is capable of realizing the continuity of subsequent calico-paper thermal transfer printing, improving the production efficiency, improving the product quality (pattern effect, durability and the like) and reducing environment pollution.

Method for producing alloyed hot-dipping galvanized steel sheet

The present invention discloses a production method for an alloyed hot-dip galvanizing steel plate, comprising the processes of strip steel producing, strip steel galvanizing, alloying, leveling and passivating, wherein in the strip steel galvanizing process, the temperature of strip steel entering a galvanized pot is 450 to 470 DEG C, and the temperature of zinc liquid is 455 to 465 DEG C. Compared with current technology, the method can produce a steel plant which not only has good welding property and coating property of a traditional alloyed hot-dip galvanizing steel plate, but also has superior corrosion-resistant property, black -patina-resistant property, conductivity and environment protecting property, and is particularly suitable for manufacturing kinescopes.

High-strength hot rolled steel plate and manufacturing method thereof

The invention discloses a high strength hot rolling structure steel plate, which belongs to the technical field of the metal structure material. In the invention, an Nb microalloying element is added into low carbon and high manganese clean steel, and also Ca in minute quantities is added. Simultaneously, the invention also discloses the manufacturing method of the steel plate, the manufacturing method comprises the steps that the converter smelting and refining, continuous caster protecting casting, and control rolling and control cooling process is adopted, through the thinning strengthening and precipitation strengthening of the crystal grain, the hot tandem rolling coiled sheet with pure steel quality, good combined property and uniform and fine grain size can be obtained, the steel plate not only has high strength, simultaneously, the steel plate has very high toughness and superior cold forming performance, and the structure requirement of the vehicle can be met.

Hot-rolled and pickled steel plate for 380MPa-grade single-sided enamel and production method thereof

The invention provides a high-strength deep drawing hot-rolled and pickled steel plate for 380MPa-grade single-sided enamel. The high-strength deep drawing hot-rolled and pickled steel plate comprises the following chemical components in percentage by weight: 0.35-0.65% of Mn, 0.015-0.045% of Als, 0.030-0.060% of Ti, 0.008-0.016% of S, not more than 0.018% of C, not more than 0.05% of Si, not more than 0.020% of P and not more than 0.006% of N. According to the steel type component design and the process control, provided by the invention, the yield strength of the embodiment steel is not less than 380MP, the elongation rate is more than 35%, and the yield is avoided. An enamel product manufactured from the enamel produced by matching the high-strength deep drawing hot-rolled and pickled steel plate provided by the invention with a controlled rolling and controlled cooling technology through a wet method or electrostatic single-sided enamel process has no fish-scaling, the adherence strength ...

Emery wheel moves seat

The utility model relates to an emery wheel moves seat belongs to mold machine tool processing technology field. Including supporting seat frame and connecting plate, the supporting seat frame includebed frame, female guide rail and panel, the bed frame is trapezoidal structure for the cross -section, is provided with mounting groove and back cut in it, the bearing pass through the mounting groove and the supporting seat frame be connected, the connecting plate include mounting panel and public guide rail, public guide rail setting sets up locking groove, square hole and a plurality of set screw on the mounting panel on the mounting panel, connecting plate one side is through the female guide rail sliding connection on public guide rail and the supporting seat frame, the opposite side then through mounting panel and bistrique frame fixed connection, is connected with grinding head main shaft on the bistrique frame, the emery wheel is installed to the grinding head main shaft lower extreme ...

Self-lubricated color-coated sheet and production method thereof

The invention relates to a self-lubricated color-coated sheet and a production method thereof. The back side of the self-lubricated color-coated sheet is coated with a self-lubricated coating, and the self-lubricated coating is 0.5-2.5g/m<2> thick. The production method comprises the following steps: cleaning a substrate, passivating, coating front side primer, curing, cooling, coating front side finishing coat/back side self-lubricated coating, curing, cooling, covering a film, inspecting and coiling. By adopting the self-lubricated color-coated sheet provided by the invention, the problems of cost increase and punching damage/crack caused by the fact that oil or film coating treatment is needed when 2/0 colored-coated sheets are used in the domestic electric appliance industry are solved, consumption on lubricants and film coating materials is reduced, and the machining process (oil coating, film coating and the like) is simplified.

Production method of boron-containing tube-making steel band

The invention discloses a production method of a boron-containing tube-making steel band. The boron-containing tube-making steel band comprises the following components in percentage by weight: 0.0008-0.0028% of B, at most 0.19%% of C, 0.15-0.35% of Si, at most 1.53% of Mn, at most 0.015% of P, at most 0.010% of S, at most 0.0045% of N, 0.023-0.032% of Als, 0.015-0.020% of Ti, and the balance of iron and inevitable impurities. The production method of the boron-containing tube-making steel band comprises the following steps: smelting, LF refinment, continuous casting and continuous rolling of CSP sheet billet, cooling and coiling. By matching the specific steel grade composition design with the CSP continuous casting and continuous rolling technique, the production method has the advantages of favorable technical adaptability, low energy consumption and high production efficiency; and the product has the advantages of favorable shape, high yield, high dimensional accuracy, stable performance ...

Steel plate and preparation method thereof

The invention relates to a steel plate and a preparation method thereof. The steel plate is a 500MPa grade cold-rolled dual-phase steel plate and comprises the following components by mass percent: 0.03-0.08% of C, 0.2-0.4% of Si, 1.0-1.7% of Mn, 0.020-0.060% of Als, not more than 0.4% of Cr, not more than 0.01% of P, not more than 0.01% of S and the balance of Fe and inevitable impurities. The method comprises the following steps: smelting; forging and hot rolling; acid pickling and cold rolling; continuous annealing; finished product obtaining. The steel plate has the beneficial effects that on the basis of a C-Mn system, the contents of C and alloying elements are reduced and the steel plate has the characteristics of high tensile strength, good welding property, low yield ratio, good strengthening and toughening matching, good stamping property, high initial work hardening rate and the like; the content of Si in the design is lower and meanwhile high hydrogen annealing is adopted in ...

Emery wheel lift slide

The utility model relates to an emery wheel lift slide belongs to mold machine tool processing technology field. Including supporting seat frame and connecting plate, the supporting seat frame includebed frame, female guide rail and panel, the bed frame is trapezoidal structure for the cross -section, is provided with mounting groove and back cut in it, the bearing pass through the mounting groove and the supporting seat frame be connected, the connecting plate include mounting panel and public guide rail, public guide rail setting sets up locking groove, square hole and a plurality of set screw on the mounting panel on the mounting panel, connecting plate one side is through the female guide rail sliding connection on public guide rail and the supporting seat frame, the opposite side then through mounting panel and bistrique frame fixed connection, is connected with grinding head main shaft on the bistrique frame, the emery wheel is installed to the grinding head main shaft lower extreme ...