61results about How to "Good spot weldability" patented technology

The invention discloses a high-strength cold-rolled hot-galvanized precipitation reinforced steel plate and a manufacturing method thereof. The steel plate comprises the following components: 0.09 to 0.12 weight percent of C, less than or equal to 0.05 weight percent of Si, 0.8 to 1.8 weight percent of Mn, less than or equal to 0.02 weight percent of P, less than or equal to 0.01 weight percent of S, less than or equal to 0.008 weight percent of N, 0.02 to 0.06 weight percent of Al, 0.05 to 0.08 weight percent of Nb and Ti and the balance of Fe and inevitable impurities. The microstructure ofthe steel plate is ferrite and second phase particles, wherein the diameter of the second phase particles is about less than 6 mu m, the yield strength is 500 to 600MPa, the tensile strength is 570 to 710MPa, and the total coefficient of elongation is over 14 percent (80 gauge length and transverse stretching). The hot-galvanized steel plate has high welding performance and surface quality and can be widely used in automotive structural membranes.

A hot stamped high strength part in which the propagation of cracks which form at the plating layer at the time of hot stamping when hot stamping aluminum plated steel sheet is suppressed and the post painting anticorrosion property is excellent even without adding special ingredient elements which suppress formation of cracks in an aluminum plating layer is provided.

A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer which includes an Al—Fe intermetallic compound phase on the surface of the steel sheet, wherein the alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 μm, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 μm, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship:

0<standard deviation of thickness/average value of thickness≦0.15.

The invention relates to steel for a 300MPa-grade automobile structural part and a production method for the steel. The steel comprises the following main components in percentage by weight: 0.06-0.08 percent of C, 0.05-0.09 percent of Si, 0.30-0.45 percent of Mn, 0.025-0.055 percent of Al, 0.015-0.025 percent of P, less than or equal to 0.006 percent of S, 0.010-0.019 percent of Nb, less than or equal to 0.006 percent of N and the balance of Fe and impurities. The production method comprises the production steps of molten iron desulfurization, converter smelting, ladle argon blowing, continuous casting, heating of a casting blank, hot rolling, winding, conventional pickling, cold rolling, continuous operation and flattening for later use. The production method disclosed by the invention has the advantages of short process flow, lower energy consumption and stable mechanical property; and in addition, on the premise that the yield strength of 300-340MPa and the tensile strength of 390-445MPa are met, the elongation percentage is not lower than 31 percent, the plastic strain ratio r is 1.45-1.80, a strain hardening index n is 0.16-0.20, a wide-cold test bending is 180 degrees and a bending diameter d is equal to 0; and in a metallographic structure, an equiaxed ferrite is 85-90 percent and a granular pearlite is 10-15 percent.

This invention relates to electrode ear in the cell and conductive metal sheet among the cells and their processing method, with the advantages of low price, good weldability, conductivity and comprehensive property better than pure nickel and nickel-plating steel. The invention comprises base plate in copper material, characterized in that the base plate surface is nickel-copper alloy layer, and comprising the following steps: cleaning the copper belt, eliminating oil, dealing deoxidation and ion treatment to the copper belt surface, then electroplating, percolation annealing and at last cold rolling.

Provided herein is a plated steel sheet having a yield ratio, strength (tensile strength), elongation, hole expansibility, and CTS. A method for producing the plated steel sheet is also provided, among others. A steel sheet of a specific composition is provided that has a micro structure containing 70 to 90% of ferrite, 5 to 20% of martensite, 5% or less of retained austenite, 10% or less of bainite, and 5% or less of perlite by volume. The ferrite has an average crystal grain diameter of 20 μm or less. The martensite has an average crystal grain diameter of 5 μm or less. The retained austenite has an average crystal grain diameter of 5 μm or less. The bainite has an average crystal grain diameter of 7 μm or less. The steel sheet has a tensile strength of 590 MPa or more.

Provided herein is a steel sheet of a specific composition that has a micro structure containing, by volume, 75 to 95% of ferrite, 3 to 15% of martensite, 0.5 to 10% of perlite, 10% or less of unrecrystallized ferrite, and 21.5% or less of a low-temperature occurring phase representing the remainder, and in which the ferrite has an average crystal grain diameter of 6 μm or less, and the martensite has an average crystal grain diameter of 3 μm or less, and an average aspect ratio of 4.0 or less, and in which a Nb base precipitate having an average grain diameter of 0.10 μm or less is contained. The steel sheet has a tensile strength of 590 MPa or more.

A steel sheet including, by mass %, C: more than 0.100% and 0.500% or less, Si: 0.0001% or more and less than 0.20%, Mn: more than 0.20% and 0.50% or less, Al: 3.0% or more and 10.0% or less, N: 0.0030% or more and 0.0100% or less, Ti: more than 0.100% and 1.000% or less, P: 0.00001% or more and 0.0200% or less, S: 0.00001% or more and 0.0100% or less, and a remainder including Fe and impurities, in which a sum of a C content and a Ti content satisfies 0.200<C+Ti≦1.500 by mass %, a product of an Al content and an Si content satisfies Al×Si≦0.8 by mass %, and a specific gravity is 5.5 to less than 7.5.

The invention discloses 460MPa grade cold-rolled microalloy high strength steel. The 460MPa grade cold-rolled microalloy high strength steel comprises, by mass, 0.051 to 0.059% of C, 0.01 to 0.02% ofSi, 1.17 to 1.27% of Mn, 0.2 to 0.5% of Al, P<=0.010, S<=0.006, 0.03 to 0.05% of Nb, 0.07 to 0.08% of Ti, and the balance Fe and unavoidable impurities. A manufacturing method is combined with component design and manufacturing technology improvement, so that the obtained steel products are high in strength, percentage elongation, spot welding performance, and moulding performance, excellent platability is achieved, rebound deformation performance is small, problems in the prior art such as poor formation performance, weldability, and rebound performance of high strength steel of the same grade are solved, and obvious social benefit and economic benefit are achieved.

The invention discloses a condenser pipe arrangement spot welding machine with a hanging rack. The condenser pipe arrangement spot welding machine comprises a hanging rack structure arranged on an X-axis track. A material hanging mechanism, a spot welding mechanism and a discharging mechanism are sequentially arranged on the movable hanging rack mechanism in the direction of the X-axis track. The material hanging mechanism comprises the hanging rack. Spot welding devices are correspondingly arranged on the spot welding mechanism along the two sides of the X-axis track. A Y-axis lifting device is arranged on the upper portion of the spot welding mechanism in the Y-axis direction. The Y-axis lifting device can move along a Y-axis track. The Y-axis lifting device can be automatically connected with the hanging rack moving to the portion below the Y-axis lifting device. A spot welding clamping station is arranged below the Y-axis lifting device. The hanging rack can move into the spot welding clamping station. Multiple U-shaped clamping grooves are uniformly formed in the spot welding clamping station. Multiple L-shaped steel wire limiting pieces are arranged on one sides of the U-shaped clamping grooves. A push air cylinder is connected to each steel wire limiting piece. Discharging machines are arranged on the two sides of the spot welding mechanism.

The purpose of the present invention is to provide a hot-dip galvanized steel sheet that, after press work, has excellent plating adhesion, excellent spot-welding properties, and excellent corrosion resistance after coating, and has an excellent external appearance after coating. The hot-dip galvanized steel sheet has a steel sheet, a hot-dip galvanized layer, and an intermetallic compound. The steel sheet has, in mass%, 0.03%-0.70% C, no more than 0.10% Si, 0.5%-0.9% Mn, 0.020%-0.050% P, no more than 0.010% S, 0.010%-0.035% Nb, no more than 0.005% N, and no more than 0.10% Al, with the remainder being Fe and unavoidable impurities. The hot-dip galvanized layer includes 0.3%-0.6% Al. The intermetallic compound includes 0.12-0.22 gm-2 Al and includes Fe2Al5 having an average particle diameter of no more than 1 µm.

The invention discloses a cylindrical cell battery pack packaging structure suitable for bearing a large current. The cylindrical cell battery pack packaging structure suitable for bearing the large current comprises multiple longitudinal cylindrical cell battery monomers (1) of which negative and positive electrodes are connected end to end through connecting components (2), and horizontal cylindrical cell battery monomers (3) which are installed at the end parts of the longitudinal cylindrical cell battery monomers (1) and form U-type arrangement with the longitudinal cylindrical cell battery monomers (1). The cylindrical cell battery monomer comprises a copper current-carrying plate (1.1), a nickel sheet (1.2) and multiple cylindrical cells (1.3). The copper current-carrying plate (1.1)is installed at two negative and positive ends of the cylindrical cells (1.3). The nickel sheet (1.2) is installed between the copper current-carrying plate (1.1) and the cylindrical cells (1.3). Thenickel sheet (1.2) is connected with electrodes of the cylindrical cells (1.3) and the copper current-carrying plate (1.1). The cylindrical cell battery pack packaging structure is capable of bendinglugs at two sides of the nickel sheet to a groove in the front face of the copper current-carrying plate, the structure is simple, and a battery monomer parallelly-connected structure is capable of increasing a thickness of the copper current-carrying plate according to the need, so a design requirement of the oversize current is satisfied.

The invention relates to the technical field of tin dispensing equipment, in particular to automatic online tin paste dispensing equipment and a working method thereof. The automatic online tin paste dispensing equipment comprises a rack, a workbench, a tin dispensing device and a control device. The rack comprises an upper rack body and a lower rack body. The upper rack body is installed on the lower rack body and covers the workbench and the tin dispensing device. The control device is electrically connected to the workbench and the tin dispensing device. The workbench comprises an installation plate, a feeding assembly, a fixing assembly and a discharging assembly. The tin dispensing device comprises a supporting frame, a driving sliding platform, a detection assembly, a tin smearing assembly and a tin welding assembly. The automatic online tin paste dispensing equipment is high in working efficiency and automation degree and good in spot welding effect. The working method of the automatic online tin paste dispensing equipment comprises the steps that a program is written in the control device at first; a plate is fixed to the workbench, detected through the detection assembly, and smeared with tin paste through the tin smearing assembly; spot welding is conducted in the position where the tin paste is smeared through the tin welding assembly; and after spot welding is completed, the plate is detected again through the detection assembly. The working method is high in tin dispensing quality, automation degree and working efficiency.

The invention discloses a preparation method of a connecting conductor material for an energy storage system, which comprises the following steps of: fusing and welding a prepared pure nickel foil and a pretreated aluminum material into a nickel-aluminum composite material through a polymer diffusion welding technology in the preparation process, and treating the nickel-aluminum composite material by adopting a linear cutting technology or a blanking technology, and finally, preparing the connecting conductor material for the energy storage system through local polishing and insulating material spraying processes. According to the method, the preparation cost of the material is effectively reduced, the pollution to the environment is reduced, the safety performance of the battery is effectively improved, the service life of the battery is effectively prolonged, and the problems that the sleeve is not attached, the process is complex, and the sleeve is easy to crack are solved. In addition, according to the method, single-face, double-face or local single-face and double-face compounding can be carried out according to needs, the cost is controlled to the minimum under the condition that the using performance is not affected, and the material effectiveness is maximized.

The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe 3Al, FeAl(Si), Fe 2Al 5, and FeAl 3; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 μm and an oxygen content of 10 weight % or less, as measured by GDS, at a depth of 0.1 μm from the surface of the plating layer.

The invention relates to the technical field of spot welding machines, and discloses an automatic winding spot welding machine. The automatic winding spot welding machine comprises a box body, a workbench is fixedly connected to the upper surface of the box body, and an automatic feeding mechanism, an automatic winding mechanism, a wire cutting mechanism, a wire arranging mechanism, a wire cutting mechanism and a spot welding mechanism are arranged on the upper surface of the workbench; the automatic feeding mechanism comprises a first mounting plate, a vibrator, a vibration disc, a straight vibration strip, a vertical plate, a first servo motor, a vacuum pump, a suction cup and a collecting box; and the first mounting plate is fixed to the upper surface of the workbench through bolts, the vibrator is fixedly connected to the first mounting plate, the vibration disc is fixedly connected to one side of the vibrator, and one end of the straight vibration strip is fixedly connected to the vibration disc. Compared with manual discharging, the automatic winding spot welding machine has the advantages that the speed is higher and more accurate, the later winding efficiency can be improved while the feeding efficiency is improved, the problems of unevenness and compactness of manual winding displacement and low manual winding efficiency are solved, and the winding efficiency can be improved to a great extent.