54results about How to "Suitable for mass production operations" patented technology

The invention discloses hull structural steel adapting to high heat input welding, which comprises the following chemical components in percentage by mass: 0.06 to 0.14 percent of C, 0.10 to 0.50 percent of Si, 0.80 to 1.80 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.008 percent of S, 0.020 to 0.050 percent of Nb, 0.006 to 0.030 percent of Ti, 0.0030 to 0.0100 percent of N, 0.015 to 0.045 percent of Al, 0.03 to 0.10 percent of V and the balance of Fe and inevitable impurities. The hull structural steel has the process characteristics that: the Ti is conveyed in a mode of steel wires formed by wrapping alloy powder by steel belts, and the addition process of the Ti is synchronous with the casting process, so that the alloying is more uniform, generated TiN mass points are finer and more dispersed, and the capacity of inhibiting grain growth is higher; and the production process is simple and convenient, and the method is suitable for batch production. When steel plates produced by the smelting method are subjected to high heat input welding under the condition of more than 50 kJ / cm, the toughness of welding heat affected zones is high.

The invention relates to the technical field of a paint, and concretely discloses an aqueous epoxy zinc-rich priming paint and a preparation method thereof. The priming paint comprises the following raw materials in parts by weight: 10-30 parts of epoxy resin, 0.1-0.5 parts of a wetting dispersant, 0.1-0.5 parts of an antifoaming agent, 1-5 parts of a film-forming auxiliary agent, 40-70 parts of sheet zinc dust, 4-20 parts of spherical zinc dust, 0-25 parts of ferrophosphorous powder, 0.2-2 parts of graphene oxide, 0.2-2 parts of gas-phase silica, 0.1-0.5 parts of a flash rust-prevention agent, 10-30 parts of a curing agent, 0.1-1 part of magnesium lithium silicate, and 5-10 parts of deionized water. The two-component aqueous epoxy zinc-rich priming paint employs a component A and a component B, the construction is simple, the VOC content is low, the hardness is high, adhesive force, impact resistance and sag resistance are excellent, the anti-settling performance is good, the storageperformance of the priming paint is increased, and the anti-salt spray performance is excellent.

The invention relates to the technical field of manufacturing of steel reinforcement cages, and provides a steel reinforcement cage production line. The steel reinforcement cage production line comprises a stirrup shelf, a longitudinal bar shelf, a rotary tool assembly, a stirrup clamping robot, a longitudinal bar clamping robot and a steel reinforcement binding robot, wherein the longitudinal barclamping robot comprises a driving wheel, an active driving assembly used for driving a driving wheel to do rotary motion around a first axis, a main pressing wheel and a main press driving assemblyused for driving the main pressing wheel to move in a first direction. The outer wheel surface of the driving wheel and the outer wheel surface of the main pressing wheel can be used for clamping a longitudinal bar together, the longitudinal bar clamping robot clamps the longitudinal bar at a longitudinal bar placement position and moves the longitudinal bar to a longitudinal bar conveying position, and the driving wheel drives the longitudinal bar to penetrate through stirrups in a second direction in sequence from the longitudinal bar conveying position and fixes the longitudinal bar to a longitudinal bar clamp. The steel reinforcement cage production line can be used producing steel reinforcement cages of different specifications and dimensions, the automatic level is high, operation issimple, the steel reinforcement cage manufacturing efficiency is high, and the steel reinforcement cage production line is suitable for large-scaled production work of the steel reinforcement cages.

The invention relates to a motor-end-cover tin soldering machine. The motor-end-cover tin soldering machine comprises a machine body, feeding rails, a feeding mechanism, a feeding pushing mechanism, a feeding pressing mechanism, a material sensor, a brush pressing mechanism, a soldering mechanism, a soldering jacking mechanism, discharging rails, a tin feeding mechanism and an PLC for controlling the mechanisms, wherein the feeding rails, the feeding mechanism, the feeding pushing mechanism, the feeding pressing mechanism, the material sensor, the brush pressing mechanism, the soldering mechanism, the soldering jacking mechanism, the discharging rails, the tin feeding mechanism and the PLC are arranged on the machine body. The feeding rails are located below the right side of the discharging rails, the feeding mechanism is located on the left side of the feeding rails, the feeding pushing mechanism and the feeding pressing mechanism are arranged over the feeding mechanism, the brush pressing mechanism and the soldering mechanism are arranged over the discharging rails, the soldering jacking mechanism is arranged at the bottom of the discharging rail located under the soldering mechanism, and the PLC is arranged at the portion, behind the feeding rails, of the machine body. According to the motor-end-cover tin soldering machine, the flow-type structural design is adopted, processes of tin welding and the like of end covers are automatically completed through the machine, machining efficiency is effectively improved, and the motor-end-cover tin soldering machine is quite suitable for batch production.

The present invention discloses one kind of thick steel plate with high strength and low welding crack sensitivity and its production process. The chemical composition includes C 0.06-0.09 wt%, Si 0.15-0.55 wt%, Mn 1.00-1.60 wt%, P not more than 0.015 wt%, S not more than 0.006 wt%, Ni 0.15-0.40 wt%, Cr not more than 0.30 wt%, Mo not more than 0.30 wt%, Cu not more than 0.30 wt%, V 0.02-0.06 wt%, Nb 0.005-0.05 wt% and Als 0.010-0.04 wt%, except Fe and inevitable impurities; and meets Pcm not higher than 0.20 % and Ceq not higher than 0.42 %. The production process includes two stage controlled rolling, on-line laminar flow cooling, off-line tempering and other steps. The produced steel plate has thickness up to 75mm, tensile strength not lower than 610 MPa and very low welding crack sensitivity.

The invention relates to a water-based strong-weather-resistant self-repairing two-component polyurethane topcoat and a preparation method thereof. The topcoat is prepared by mixing a mixture of a group A and a mixture of a group B, wherein the mixture of the group A comprises a water-based hydroxyl acrylic emulsion, a co-solvent, a water-based ultraviolet light absorber, a water-based oilfield fluorescent shielding agent, a neutralizer, a defoaming agent, a dispersant, a pigment, a levelling agent, a substrate wetting agent, deionized water and a thickening agent; and the mixture of the groupB comprises aliphatic isocyanate and an ester organic solvent, and a mass ratio of the mixture of the group A to the mixture of the group B is (4.5-5.5):1. The preparation method comprises the following steps: mixing 50-70% of the deionized water, 40-60% of the neutralizer, the defoaming agent, the dispersant, 15-25% of the co-solvent and the pigment, performing grinding to obtain pre-stage slurry, mixing the water-based hydroxyl acrylic emulsion, and the remaining deionized water, neutralizer and co-solvent, adding the pre-stage slurry into the mixed material, performing mixing, adding the water-based ultraviolet light absorber, the water-based oilfield fluorescent shielding agent, the substrate wetting agent and the levelling agent, adjusting viscosity by using the thickening agent to obtain the mixture of the group A, preparing the mixture of the group B, and mixing the mixtures of the group A and the group B before the topcoat is used.

The present invention relate to the field of aqueous primer, especially relates to a heavy metal-free aqueous epoxy primer and a preparation method thereof. The finish paint is composed of a componentA and a component B, and comprises that following raw materials: aqueous epoxy emulsion, substrate wetting agent, pigment, filler, antirust pigment, defoamer, dispersant, cosolvent A, antiflashover agent, deionized water, thickener, epoxy resin curing agent and cosolvent B. The topcoat can reduce the use of auxiliary materials containing organic solvents through the selection of the types and amounts of various components, thereby greatly reducing the VOC content, avoiding the adverse effects of a large number of toxic volatiles on human health and the environment, and being more environmentally friendly. At the same time, the film has excellent anticorrosion performance and toughness, which can meet the anticorrosion requirements of marine engineering, modern transportation, energy industry, large industrial enterprises, municipal facilities and so on.

The invention provides a high strength low alloy steel plate suitable for high heat input welding and is characterized in that the chemical composition (wt percent) of steel comprises 0.04 percent to 0.16 percent of C, 0.10 percent to 0.50 percent of Si, 0.40 percent to 1.8 percent of Mn, 0.020 percent to 0.050 percent of Nb, 0.006 percent to 0.030 percent of Ti, 0.0030 percent to 0.010 percent of N, 0.015 percent to 0.060 percent of Al and the rest, Fe and other inevitable impurities; meanwhile, C+Mn / 6+Si / 24+Ni / 40+Cr / 5+Mo / 4+V / 14 is less than or equal to 0.45 percent and the total amount of Ti and the total amount of N are that [Ti percent]T is more than or equal to 2.667[N percent]T-0.004667 percent; moreover, Ti microalloying is adopted to ensure that the Ti / N ratio in the second sort of particle generated ranges between 2.4 and 3.2. The manufacture method of the steel plate adopts austenite recrystallization zone and austenite non-recrystallization zone rolling and forced water cooling after rolling; moreover, when the steel plate is under 50 KJ / cm to 150 KJ / cm high heat input welding, the welding heat affected zone has excellent toughness. The invention has the advantages of simple production process, low cost and wide applicability.

The invention relates to the field of industrial coatings, and especially relates to an anti-ultraviolet vehicle paint and a preparation method thereof. The anti-ultraviolet vehicle paint is preparedfrom a water-based hydroxyl polyacrylic acid dispersion, a pH neutralizer, a coalescing agent, deionized water, polytetrafluoroethylene micro-powder, a benzotriazole ultraviolet light absorber, titanium dioxide, a flame retardant, pigment, barium sulfate, bentonite, a thickener, a water-based polyurethane curing agent, propylene glycol diacetate, a dispersing agent, an antifoaming agent, a wettingleveling agent and an antibacterial agent. The vehicle paint has the advantages of favorable ultraviolet resistance, favorable gloss, favorable decorativeness, favorable hydrophobicity, low VOC, lowodor and environment friendliness.

The invention provides a secure chip burning method and system. The invention discloses a secure chip burning method. The method specifically comprises the following steps: checking a test machine; reading unique information data of the tested chip; performing encryption calculation on the unique information data of the tested chip according to a preset encryption algorithm to obtain an exclusive digital certificate corresponding to the tested chip; and burning the exclusive digital certificate on the tested chip through the test machine. According to the method, the transmission link of the burnt content of the tested chip is shortened, the burnt content is obtained through calculation by an encryption algorithm after the unique information data of the tested chip is read, the whole data transmission is completely carried out in a hardware security environment, cross-hardware public network transmission is avoided, and the transmission efficiency is improved. The problem of leakage caused by separate distribution of the burnt content and the tested chip in the prior art is solved, and the method has high safety and high convenience and is suitable for batch production operation.

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.