3084 results about "Cooling speed" patented technology

Heater module, and semiconductor manufacturing equipment in which the heater module is utilized, for raising the cooling speed of a post-heating heater markedly more than conventional, and that can contribute toward bettering and improving productivity, without accompanying scaling-up of and cost increases in the semiconductor manufacturing equipment. The heater module is furnished with heater part 1a for controlled heating of a wafer placed on its top face, and block part 3a provided to be shiftable relative to said heater part, for varying heat capacity in total with heater part 1a by abutting on or separating from the reverse surface of heater part 1a. By having the heat capacity of block part 3a be 20% or more of the total heat capacity of heater part 1a and block part 3a, the heater cooling speed can be made 10° C./min or more.

A toner satisfying at least one of the following relationships:

10° C.<(T1−T2)<60° C. and 0<Q2/Q1<2/3

wherein T1 represents a glass transition temperature of the toner and Q1 represents an endothermic quantity at a melting point thereof before melting when heated from −20° C. to 150° C. at a heating speed of 10° C./min, and T2 represents a glass transition temperature thereof and Q2 represents a an endothermic quantity at a melting point thereof after melting after heated from −20° C. to 150° C. at a heating speed of 10° C./min, cooled to −20° C. at a cooling speed of 10° C./min and heated again at a heating speed of 10° C./min.

The invention belongs to the field of welding, in particular to a process method applicable to marine engineering large thick steel plate submerged arc welding in low-temperature environment, which comprises a welding method, welding material selection, a welding order, a welding process and the selection and control of various welding process parameters. The method renders with carbon dioxide gas protection welding, and fills and faces through an automatic submerged arc welding; stops welding when the welding reaches more than two thirds of the thickness of a large groove during the welding process, clears chips on the back side and completes the welding of the other side; finally completes the welding of the first side; strictly controls all relevant process parameters of the welding during the welding process, and solves the problems of poorer anti-crack toughness of welding seams and heat affected zones caused by too high cooling speed of the welding seams and too high temperature; can ensure good anti-crack toughness of a welding seam connector without heat treatment after welding; and can meet the requirements of welding of an E36 plate with the thickness of 35 to 77mm under the working environment at the temperature of above -30DEG C, simplifies the production process, shortens the production cycle and reduces the cost.

The invention provides a high-strength cold rolling transformation induced plasticity steel plate and a preparation method thereof. The high-strength cold rolling transformation induced plasticity steel plate comprises the following components by weight percentage: 0.1%-0.5% of C, 0.1%-0.6% of Si, 0.5%-2.5% of Mn, 0.02%-0.12% of P, less than or equal to 0.02% of S, 0.02%-0.5% of Al, less than or equal to 0.01% of N, 0.1%-1.0% of Cu and the rest Fe. The preparation method comprises the following steps of: (a) refining molten steel meeting a component condition, and casting into a blank; (b) rolling, wherein the heating temperature is 1,100-1,250 DEG C, the heat preservation time is 1-4h, the initial rolling temperature is 1,100 DEG C, the final rolling temperature is 750-900 DEG C, the coiling temperature is less than 700 DEG C, the thickness of a hot rolled steel plate is 2-4mm, and the cold rolling accumulated pressing amount is 40-80%; and (c) continuous annealing, wherein the annealing temperature is 700-Ac3+50 DEG C, the heat preservation time is 30-360s, the cooling speed is 10-150 DEG C/s, the aging temperature is 250-600 DEG C, the aging time is 30-1,200s, and the hot roller steel plate is cooled at the speed of 5-100DEG C/s to be at the room temperature. The steel plate disclosed by the invention has the bending strength of 380-1,000 MPa, tensile strength of 680-1,280 MPa and elongation of 15-30%.

The invention discloses a steel plate for stamping and quenching and a manufacturing method thereof. The steel plate comprises the following chemical components in percentage by mass: 0.14 to 0.28 percent of C, less than 0.40 percent of Si, 0.4 to 2.0 percent of Mn, less than or equal to 0.010 percent of P, less than or equal to 0.004 percent of S, 0.016 to 0.040 percent of Al, 0.15 to 0.8 percent of Cr, 0.015 to 0.12 percent of Ti, 0.001 to 0.005 percent of B, less than or equal to 0.005 percent of N, and the balance of Fe and unavoidable impurities. The manufacturing method comprises the following steps of: heating a blank to 1,150 to 1,250 DEG C, preserving heat for 2.5 to 4 hours and performing rough rolling, and then performing finish rolling under multichannel pressure and at the final rolling temperature of between 830 and 950 DEG C, performing laminar cooling, and cooling to the rolling temperature at the cooling speed of more than 10 DEG C/s and the rolling temperature of between 600 and 680 DEG C. The cold-rolled steel plate is obtained by the following steps of: performing cold rolling on a hot rolled steel strip, annealing through a pure hydrogen gas cover furnace, and oiling and packaging. The annealing temperature is 550 to 650 DEG C and the heat preserving time is 3 to 5 hours. The steel has a simple component design and high hardenability. The depth of a hardening layer of more than HRC45 is 10 to 16mm. The steel plate consists of ferrite and pearlite. After thermal stamping and quenching, an all-martensite structure can be obtained. The tensile strength is above 1,300N/mm<2>.

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.

The present invention discloses one kind of thick steel plate with great line energy and low welding crack sensitivity and its production process. The chemical composition includes C 0.06-0.10 wt%, Si 0.15-0.40 wt%, Mn 1.20-1.60 wt%, P not more than 0.015 wt%, S not more than 0.007 wt%, Ni 0.15-0.40 wt%, Cr not more than 0.30 wt%, Mo 0.15-0.30 wt%, V 0.02-0.06 wt%, Al 0.015-0.045 wt%, Ti 0.010-0.034 wt%, except Fe and inevitable impurities; and meets Pcm not higher than 0.20 %. The production process includes pre-treatment of molten iron, smelting in converter, LF furnace plus VD furnace vacuum treatment, two stage controlled rolling, on-line laminar flow cooling, tempering at 600-680 deg.c and other steps. The produced steel plate has no need of quenching and tempering treatment.

The invention belongs to the metallurgy technical field and in particular relates to an intermediate blank cooling system and cooling control technology. The intermediate blank cooling system is characterized in that an aerial fog cooling device body is arranged between a rough mill and a finishing mill. The aerial fog cooling device body is composed of an upper cooling header and a lower coolingheader, and an aerial fog nozzle and a compression air pipe are arranged on the cooling water pipe of the upper cooling header and the lower cooling header; and the on/off control valve and flow control valve of the cooling water pipe and the compression air pipe are connected with a control valve station. The intermediate blank aerial fog cooling technology is controlled by the aerial fog controltechnology sprayed on the cooling header arranged near roller ways at the front and rear of the mills. The invention has fast cooling speed without changing metal performance, water yield regulatingrange is wide and the water yield can be regulated continuously, the cooling speed of the intermediate blank can be precisely controlled, and the invention can be widely applicable to middle and thickplate production line.

The invention discloses an ultra-high strength steel plate thermal die cutting and forming die, comprising an upper die seat and a convex die which is fixed on the upper die seat, a lower die seat and a concave die that is fixed on the lower die seat; the concave die is internally provided with a cooling water passage which is connected with a cooling water circulation system. More particularly, the concave die is compose of a trough-shaped concave die seat and a cavity body; the concave die seat is provided with a water inlet and a water outlet; the cavity body is arranged in the concave trough of the concave die seat; a gap is arranged between the cavity body and the concave die seat; the gap is communicated with the water inlet and the water outlet. The die improves cooling speed, ensures the uniformity of cooling, has simple and practical structure, and fast cools the die and the punching parts in the die by the water cooling system of the die, so as to achieve the effect of quenching. As the process is completed under the pressure preservation process of the die, the workpiece has extremely small deformation and the dimension precision of the punching part can be excellently ensured.

The invention provides a frequency converting control method for a refrigerator. The method includes that (1) whether the refrigerator meets a refrigeration condition or not is determined after defrosting of the refrigerator is finished; (2) if the refrigerator meets the refrigeration condition, an environment temperature and a setting temperature are detected, and a preset revolution meter is inquired so as to control the operation of a compressor at a corresponding maximum revolution speed until the refrigeration is completed; (3) when the refrigerator meets the refrigeration condition again, the operation of the compressor is controlled at a corresponding minimum revolution speed; (4) whether the compartment temperature of the refrigerator decreases to a preset temperature or not after preset time is determined; (5) if the compartment temperature of the refrigerator does not decrease to the preset temperature, the revolving speed of the compressor is increased by one level, and the step (4) is returned; and (6) if the compartment temperature of the refrigerator decreases to the preset temperature, the compressor is controlled to continue operating until the refrigeration is finished. According to the frequency converting control method for the refrigerator, the revolving speed of the compressor is continuously adjusted according to the environment temperature, interior temperatures of compartments and the like, so that the frequency conversion is achieved, the cooling speed of the refrigerator is improved, waste of cooling capacity of the compressor is reduced, and the energy consumption is lowered.

The invention discloses a high-intensity non-quenching and tempering easy-cutting steel used for a vehicle connection rod and a technical method thereof. The invention starts from the principle of improving the intensity of the non-quenching and tempering easy-cutting steel and leads the anti-tension intensity of the non-quenching and tempering easy-cutting steel containing 0.30 to 0.40 percent of carbon to be 1000MPa and the yield strength to be 750MPa by adjusting the components. The technical scheme of the invention is: the high-intensity non-quenching and tempering easy-cutting steel used for a vehicle connection rod consists of the elements of C, Si, Mn, Al, P, S, Cr, V, N and Fe; the weight percentages of the component elements are: 0.30 to 0.4 percent of C, 0. 50 to 0.70 percent of Si, 0.80 to 1.20 percent of Mn, equal to or less than 0.040 percent of P, 0.030 to 0.060 percent of S, 0.010 to 0.040 percent of Al, 0.10 to 0.40 percent of Cr, 0.10 to 0.30 percent of V, 010 to 0.015 percent of N and the rest is Fe and unavoidable impurities. The heating temperature of a continuous casting blank is 1200 DEG C; the heating time is 160min; the start rolling temperature is 1100 DEG C; the final rolling temperature is 900 DEG C; the pressing volume is 16; the cooling speed after rolling is 40 DEG C/min; after bundling, the components are thrown in a pit and slowly cooled.

The present invention provides a strip steel laminar flow cooling device which has two cooling zones and has strong cooling function and its controlled cooling method. Said device is formed from cooling zone consisting of upper laminar flow manifold and lower jet manifold, and said cooling zone includes two portions of main cooling section and fine cooling section which are formed from several upper laminar flow manifold groups and correspondent number of lower jet manifold groups. Its controlled cooling method is implemented by using computer to make setting computation, feedback computation and feedforward computation.

The invention relates to a water soluble polyether quenching medium for quenching a metal material, which comprises the following components in percentage by weight: 1 to 30 percent of water soluble polyether, 0.1 to 1.0 percent of antirusting agent, 100 to 500ppm of defoaming agent, 0.1 to 1.0 percent of composite germicide, 0.2 to 2 percent of pH regulator and the balance of water, wherein the water soluble polyether is a condensation compound of ethylene oxide and propylene epoxide and a number-average molecular weight is less than 20,000. The water soluble polyether quenching medium is characterized by solving the problems of insufficient hardness of oil quenched workpieces and cracking and deformation of water quenched workpieces, reducing fire hazards in quenching, improving production safety, avoiding oily fume discharge, reducing environment pollution, improving working environment, contributing to the body and mind health of workers, along with readily available raw materials,simple production process, low price, excellent antirusting, defoaming and antibacterial performance, wide quenching cooling speed range and cooling speed ranging from oil quenching cooling speed andwater quenching cooling speed.

The invention provides a bainite/martensite steel rail and a manufacturing method thereof. The steel rail is formed by performing steel hot rolling on the following components in percentage by weight: 0.10 to 0.40 percent of C, 0.80 to 2.00 percent of Si, 1.20 to 2.40 percent of Mn, 0.50 to 1.20 percent of Cr, 0.20 to 0.60 percent of Mo, and the balance of Fe and inevitable impurities. The steel rail comprises a rail head, a rail waist and a rail bottom, wherein the rail head is subjected to accelerated cooling at a cooling speed of higher than 1 DEG C/s and lower than and equal to 5 DEG C/s to an accelerated cooling stop temperature of lower than 300 DEG C and higher than 200 DEG C.

The invention relates to Ti microalloyed ultra-fine grained cold rolling dual-phase steel of a 1,000MPa level and a preparation method thereof, belonging to the technical field of cold rolling ultra-high strength steel for automobiles. The steel comprises the following chemical compositions in percentage by weight: 0.03-0.20 percent of C, 0.20-0.80 percent of Si, 1.2-2.0 percent of Mn, 0.03-0.15 percent of Ti, less than 0.15 percent of S, less than 0.020 percent of P, 0.02-0.15 percent of Als and the balance of Fe. In the invention, C-Si-Mn-Ti is used as a basic alloy system, low-price Ti is adopted, and alloy elements such as Cr, Mo, Nb, V, and the like are not added, thereby reducing the production cost; through a flexible continuous annealing process, the size of a martensite island can be controlled to be 1-2 micrometers or increased to about 5 micrometers under the condition that the quick cooling speed is lower than 50 DEG C/s in continuous annealing so as to obtain the following three different types of dual-phase steel: a high strength type (Rm is 980-1,200MPa, and A50 is 10-13 percent), a high plasticity type (Rm is 980-1,100MPa, and A50 is 14-18 percent) and a synthesizing type (Rm is 980-1,150MPa, and A50 is 12-15 percent); and the yield ratio is 0.47-0.65.

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.

The invention discloses a method for manufacturing metal molds used for casting manganese steel crushing walls or rolling motor walls of cone crushers. The method is characterized by comprising the following steps of: (1) manufacturing cast molds according to different sizes, specifications and models of the manganese steel crushing walls or the rolling motor walls of the cone crushers; (2) respectively designing and manufacturing near inner metal molds and near outer metal molds which have corresponding thicknesses and overall structures according to the shapes of the cast molds; and (3) distributing trumpet-shaped vent holes on the near inner metal molds and the near outer metal molds. Castings produced by using the method do not produce fragmentation; the metal molds can accelerate the cooling speed of the castings so that the surfaces of the castings have fine grain structures; and the mold cavities have the characteristics of high size precision, bright and clean surface and no distortion.

The present invention provides a three-section cooling process by laminar flow for hot-rolled steel strip. Said process adopts the computer laminar flow cooling control, and is characterized by that the steel strip can be divided into three sections for cooling, first section is head portion section whose length is 30 m, second section is intermediate section of the steel strip, and third section is the tail portion section whose length is 20 m, and the cooling temperatures of said three sections are respectively controlled in that its intermediate section temp. is equal to the objective coiling temp., its head portion section temp. is 20-50 deg.C higher than that of objective coiling section, and its tail portion section temp. is 20-40 deg.C higher than objective coiling temp. Said invention can improve the performance uniformity of steel strip.

The invention relates to an overlaying welding technology of an iron casting, in particular to an overlaying welding technology of a ductile cast iron roller. The technology comprises the following steps: (1), post-welding preparation: a, detecting cracks; b, controlling a welding material; and c, selecting a welding beveling; (2), welding: a, preheating the beveling within a range of 120mm to 180mm at a temperature range of 130 DEG C to 170 DEG C; b, adopting a DC reverse-connected arc welding machine for welding, using welding rods with the diameter of 3.2mm for welding a first-layer welding line and using welding rods with the diameter of 4mm for welding lines on subsequent layers; and (3), post-welding detection. The invention adopting the technologies, such as small currents, a plurality of stages, sectional welding, welding line hammering after welding, cooling speed reduction, and the like prevents welding line cracks and fusion region cracks from generating, prolongs the service life of products, obtains favorable economic benefits and solves the problems for the overlaying welding of mid-small cracks, and the like on the surface of the ductile cast iron roller.

The invention relates to a hot- roled martensite steel with strength for extension higher than 1000 Mpa, the component (with percent by weight) comprises: C 0.08-0.20, Si<=0.8, Mn 0.5-2.0, Al 0.010-0.060, N<=0.008, P<= 0.020, S<=0.005, one or more than one of Ti 0.01-0.03, V<=0.10 and Nb 0.01-0.05; Ca 0.001%-0.005%, added when sulfur content >=0.003; left is Fe and inavoidable foreigh matter. The main process parameters are as follows: cooling said steel with speed not less than 20 degree/ s to cooling temeprature between 150 Deg. C to Ms, stopping cooling and batching to make metallic band; or cooling with speed not less than 20 degree/ s to 650- 750 Deg. C, setting for 2- 10 seconds, and cooling with speed not less than 50 degree/ s to cooling stop temperature of 150 Deg. C- Ms, and batching to make metallic band.

A high strength oil drilling rod, the constituent is (mass ratio): C 0.20 to 0.30 percent, Si 0.1 to 0.5 percent, Mn 0.7 to 1.5 percent, Cr 0.7 to 1.5 percent, Mo 0.1 to 0.4 percent, and the rest being Fe and inescapable impurity. The method for preparation includes: thickening the end of the related steel pipe to prepare the body-pipe of upset drilling rod; heating the whole steel pipe and cooling, lying on a rotating quenching stand, spraying water by axial-flow inside surface and spraying water by laminar flow outside surface when the steel pipe is rotating; by controlling the various amount of outer water delivered to the thickening end of the steel pipe and the body-pipe, or by decreasing the amount of outer water delivered to the body-pipe, or increasing the amount of outer water delivered to the thickening end of the steel pipe, makes the thickness-different pipe and the thickening end have the same cooling rate and the same quenching structure, and also have the same dynamic behavior after quenching.

The invention provides grade X80 pipe line steel with low yield ratio and a manufacturing method thereof, belonging to the technical field of metallurgy; the pipe line steel consists of the following components by weight percent: 0.02-0.06% of C, 0.22-0.29% of Si, 1.6-1.9% of Mn, no greater than 0.002% of S, no greater than 0.012% of P, no greater than 0.045% of Al, 0.15-0.25% of Cu, 0.08-0.26% of Cr, 0.2-0.3% of Ni, 0.07-0.11% of Nb, 0.03-0.057% of V, 0.012-0.022% of Ti, 0.22-0.32% of Mo, no greater than 0.0043% of N, no greater than 0.0018% of Ca and the balance Fe. The manufacturing method comprises the following steps: melting and casting to obtain casting blank; heating and preserving warm; rolling the casting blank in two stages, wherein the start rolling temperature of the first stage of rolling is at 1100-1150 DEG C, the start rolling temperature of the second stage of rolling is at 920-940 DEG C, and the total rolling amount of the second stage is 68.4-72%; and after rolling, quickly cooling the casting blank, cooling the casting blank in the air, and cooling the casting blank to 340-490 DEG C at the cooling speed of 5-30 DEG C/s. The product of this invention has comparatively high strength as well as comparatively low yield ratio, namely excellent large-deformation resistance, can be used for normal transportation and supply of oil gas in earthquake-prone zones and constantly frozen zones, and has wide development prospect.

A phase-change memory device has a plurality of first wiring lines; a plurality of memory cells that are provided on the plurality of first wiring lines; a plurality of second wiring lines that are provided on the plurality of memory cells, respectively; and an interlayer insulating film that is formed between the plurality of first wiring lines and the plurality of second wiring lines and insulates the plurality of first wiring lines from the plurality of second wiring lines; wherein each of the memory cells includes a heat source element that is supplied with a current and generates heat and a phase-change element that is changed to an amorphous state or a crystalline state according to a cooling speed after being heated by the heat source element, a resistance value of the phase-change element varying with the change in the state, and wherein a void is formed between the two adjacent memory cells in the interlayer insulating film.

The invention discloses a magnet and a manufacturing method thereof, more particularly a sintering magnet with outstanding corrosion resistance and high performance R-(Fe, TM)-Cu-B-X system and a manufacturing method thereof; condition of the magnet is HAST experiment of 130 DEG C, 95% rRH, 2,7bar air pressure, magnet weightlessness in 20 days is less than 2mg/cm<2>, sum of [(BH)max]+[jHc] reaches 64-75, density of the magnet reaches 7.56-7.8g/cm<2>; in the process of manufacturing, an oxygen-free procedure technology using inertia gases or N<2> gas for protection controls contents of oxygen, carbon, nitrogen and hydrogen in the magnet, adjusts cooling speed of a continuous casting furnace with blanks, and controls thickness of an alloy sheet, granularity of powders and pressed compact density within a special range in order to obtain the sintering magnet with outstanding corrosion resistance and high performance R-Fe-B system, greatly saving the strategic metal Co and reducing the cost.

The invention relates to a TMCP-type YP500MPa-level thick steel plate with excellent low-temperature toughness which comprises the following chemical components by weight: 0.010-0.08% of C, 0.005-0.6% of Si, 0.5-2.50% of Mn, not more than 0.015% of P, not more than 0.005% of S, 0.010-0.12% of Nb, 0.005-0.03% of Ti, less than 0.120% of V, not more than 1.50% of Cr, not more than 0.80% of Mo, not more than 1.2% of Cu, not more than 1.60% of Ni, not more than 0.06% of Al, not more than 0.01% of Ca, 0.003-0.008% of N, not more than 0.0025% of B, not more than 0.008% of O, and the balance of Fe and inevitable impurity elements. In the manufacturing process, a heating temperature of a continuous casting blank is 1100-1250 DEG C; a rolling temperature of a recrystallization zone is 920-1170 DEG C; a rolling temperature of a non-recrystallization zone is 680-910 DEG C; a finish rolling compression ratio is not less than 2 T, wherein T is a finished product thickness; a cooling speed is not less than 5 DEG C/s, and a finally cooling temperature is 300-600 DEG C. A TMCP-type YP500MPa-level thick steel plate with excellent low-temperature toughness is obtained.

The invention relates to high-strength and high-plasticity dual-phase steel and a manufacturing method thereof. The dual-phase steel comprises the chemical components in percentage by weight: 0.07-0.19% of C, 0.10-0.50% of Si, 1.00-2.30% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, less than or equal to 0.008% of N, 0.02-0.07% of Al, less than or equal to 0.40% of Mo, less than or equal to 0.06% of Nb, and the balance of Fe and other inevitable impurities. According to the invention, by controlling the soaking temperature, slow cooling speed, slow cooling temperature, quick cooling temperature and the like of the continuous annealing process, the high-strength and high-plasticity dual-phase steel with martensite, epitaxial ferrite and residual ferritic structure can be manufactured; and continuous annealing line with a high-speed and high-hydrogen gas jet cooler is adopted, so that the content of alloy elements in the steel can be reduced, and the shaping and welding properties of steel plates can be ensured.

A method for producing a high tensile aluminum alloy for an auto heat exchanger, comprising: supplying molten aluminum alloy comprising: Si 0.3% to 1.2%, Fe 0.05% to 0.7%, Mn 0.8% to 2.0%, Zn 0.5% to 4.0%, and other part comprising aluminum and unavoidable impurity according to mass; processing the molten aluminum alloy into plates with thickness 2 to 12mm by continuous casting forging method; and curling the plates immediately; the temperature is 530 deg. C. or even lower of the aluminum alloy material to be curled; in addition, cooling the curled aluminum alloy material with an average cooling speed 15 deg. C/h or even higher, and then developing the aluminum alloy material; in addition, undergoing cold rolling at least two times and annealing at least two times so as to obtain finished plates with a thickness no more than 0.1mm.

The invention relates to ultra quick quenching oil and a preparation method thereof. The ultra quick quenching oil comprises the following raw materials in percentage by weight: 80 to 97 percent of refined mineral oil, 1 to 10 percent of cooling catalyst, 1 to 5 percent of antioxidant and 1 to 6 percent of anionic surfactant. The kinematic viscosity of the refined mineral oil at the temperature of 40 DEG C is 6 to 9 mm<2>/s; the cooling catalyst is a mixture of oily phenolic resin and polybutylene; the antioxidant is alkylated diphenylamine; and the anionic surfactant is petroleum sodium sulfonate. The preparation method of the ultra quick quenching oil is simple and convenient; the obtained quenching oil has the advantages of ultra high cooling speed, good thermal oxidation stability, long service life and continuous and stable property retention; little peculiar smell, smog and carbon deposit are produced, and the take-out consumption of a workpiece is low; and after the workpiece is quenched by adopting the quenching oil, the workpiece has the advantages of high and uniform surface hardness, deep quenching layer, low deformation, metallographic structure, good mechanical property and good brightness, the surface of the workpiece does not become black, and the workpiece is easily cleaned.

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.

The invention relates to an induction heating ultra-temperature continuous carbonization furnace which comprises an upper furnace body, a middle water-cooling connecting sleeve and a lower furnace body to from a vertical channel and a horizontal channel, wherein the upper furnace body and the lower furnace body are communicated through the middle water-cooling connecting sleeve, the upper furnace body is mainly used for heating and the like, the middle water-cooling connecting sleeve is a cooling region part of the vertical channel; the lower furnace body is mainly used for cooling, discharging and the like; boats loaded with materials are sequentially overlapped and stepped to enter the vertical channel of the furnace body, and the boats loaded with carbonized materials are pushed into the horizontal channel through a manipulator and are stepped into and discharged out of the furnace body. Vertical heating, continuous carbonization, horizontal cooling and discharging are adopted, a high-temperature hearth needs not to support the weight of the boats and the materials; and the invention has high cooling speed, high yield and good product quality, and can better solve the problems of a horizontal continuous furnace and a vertical intermittent furnace.