43results about How to "Deposition speed is fast" patented technology

The invention relates to a metal powder-cored type nitrogen austenite stainless steel flux-cored wire and a method for manufacturing the same. The metal powder-cored type nitrogen austenite stainless steel flux-cored wire comprise a carbon steel cored shell and powder filled in the shell, and is characterized in that the powder comprises, by weight, from 35% to 45% of metal chromium, from 15% to 25% of nickel powder, from 3% to 6% of ferrochromium nitride, from 10% to 15% of silicon-magnesium alloy, from 2% to 8% of molybdenum powder, from 0.5% to 2.5% of ferrotitanium powder, from 0.5% to 1% of potassium carbonate arc stabilizers, from 0.5% to 1% of aluminum-magnesium powder, from 0.5% to 1% of bismuth oxide, from 0.3% to 0.5% of sodium oxide, from 0.01% to 0.1% of rare-earth cerium and from 1% to 10% of iron powder, and the weight of the powder ranges from 40% to 50% of the total weight of the wire. Compared with the prior art, the metal powder-cored type nitrogen austenite stainless steel flux-cored wire has the advantages that weld metal has excellent mechanical properties such as good toughness and high strength after the wire is applied to welding high-nitrogen steel, and a corrosion resistant effect is good.

The invention relates to a semiautomatic argon tungsten-arc welding technological process of a bimetal compounding sea pipe, a labour hand-held semi-automatic welding gun welding is adopted, a wire feeder continuously feeds wires, and argon gas is utilized as protective gas. The technological process comprises the following operation steps of: firstly, procedure preparation before welding: manufacturing a groove, picking up fitting the groove, and selecting a welding material; secondly, backing welding process: adopting single layer one-pass welding, wherein two welders respectively stand thetwo sides of a welding seam so as to finish the backing welding; thirdly, hot-runner welding procedure: adopting single layer two-way welding and two-person welding; fourthly, filling welding procedure: adopting five-layer two-way welding and the two-person welding, and dismantling the protective gas after welding four layers; and fifthly, a cover surface welding process: adopting the single layer one-pass welding. The technological process provided by the invention has the advantages of high welding quality, small labour intensity, low construction cost, and high production efficiency; and the technological process is suitable for a compounding submarine pipeline and welding procedure of a subsidiary vertical pipe of the compounding submarine pipeline, and is suitable for the welding of a deep water composite material pressure container and deep water pipe manifold nickel base alloy and the like.

A catalyst precursor resin composition includes an organic polymer resin; a fluorinated-organic complex of silver ion; a monomer having multifunctional ethylene-unsaturated bonds; a photoinitiator; and an organic solvent. The metallic pattern is formed by forming catalyst pattern on a base using the catalyst precursor resin composition reducing the formed catalyst pattern, and electroless plating the reduced catalyst pattern. In the case of forming metallic pattern using the catalyst precursor resin composition, a compatibility of catalyst is good enough not to make precipitation, chemical resistance and adhesive force of the formed catalyst layer are good, catalyst loss is reduced during wet process such as development or plating process, depositing speed is improved, and thus a metallic pattern having good homogeneous and micro pattern property may be formed after electroless plating.

The invention relates to the field of welding processing and discloses a method for vertical double-sided double-arc plasma symmetry welding. The method comprises the following steps: vertically placing a workpiece along the direction of a welding line; horizontally arranging variable polarity plasma arc welding guns, metal inertia gas welding guns, or non-consumable electrode metal inert-gas arc welding on two sides of the front and back two sides of the workpiece respectively. The method has the advantages of small current, high deposition rate, stable arc combustion, radical elimination of lack of penetration, maximum reduction of welding deformation, and contribution to acquisition of high-quality welding lines.

The invention discloses a series-connected double-wire type combined welding wire for CO2 gas shield high-speed flat fillet weld. The series-connected double-wire type combined welding wire for the CO2 gas shield high-speed flat fillet weld comprises an antecedent electrode welding wire and a posterior electrode welding wire, the antecedent electrode welding wire and the posterior electrode welding wire are connected in series, the antecedent electrode welding wire is formed by a first steel-tape sheath and metal cored powder contained inside the first steel-tape sheath, the weight of the metal cored powder is 10-30% of the total weight of the antecedent electrode welding wire, the antecedent electrode welding wire is high in deposition rate, the quantity of generated slag is small in a welding process, and a small amount of added fluoride enables the electric arc to be more stable. The posterior electrode welding wire is formed by a second steel-tape sheath and welding flux powder contained inside the second steel-tape sheath, the weight of the welding flux powder is 10-30% of the total weight of the posterior electrode welding wire, the content of the diffusible hydrogen of deposited metal can be reduced to be lower than 5ml/100g through the posterior electrode welding wire, and CO released by combustion of an undercoat can be reduced by Al and Mg in the welding process. A small amount of titanium and boron are added in both the metal cored powder and the welding flux powder, and the impact value of the deposited metal can be improved greatly. When welding is carried out at the welding speed higher than 1.5m/min, the combined welding wire is excellent in welding process, and good paint resistant performance can be obtained.

The invention discloses a carbon dioxide gas shielded welding flux-cored wire, which is characterized in that the flux-cored powder of the wire is mixed by the following components in percentage by weight: 10-30% of rutile, 10-30% of silicomanganese, 15-40% of iron powder, 2-15% of nickel powder, 2-25% of chromium metal, 1-5% of aluminium magnesium alloy, 2-10% of ferromolybdenum and 2-10% of ferrovanadium. The carbon dioxide gas shielded welding flux-cored wire disclosed by the invention has the advantages that the hardness and the non-deforming performance of a hot mill guide plate, a hot-forging die, a valve and the like are still can be kept even if the hot mill guide plate, the hot-forging die, the valve and the like work under the high-temperature impact load for a long time.

The invention discloses a stainless steel flux cored wire protected by CO2 gas. The stainless steel flux cored wire protected by CO2 gas is characterized in that flux cored powder and a steel belt wrapping the flux cored powder are included, and the flux cored powder of the flux cored wire comprises, by weight, 15-35% of rutile, 12-25% of silicon manganese alloy, 12-30% of iron powder, 5-16% of nickel powder, 3-10% of aluminium magnesium alloy, 10-25% of micro-carbon ferro chrome, 5-15% of ferro-molybdenum and 5-15% of ferrovanadium. The stainless steel flux cored wire protected by CO2 gas has the advantages of being suitable for welding on small-specification ultrathin stainless steel devices and containers.

The invention relates to a nickelic and chrome welding permeating flux-cored wire and a preparing method. The flux-cored wire comprises an outer shell, and the outer shell is internally provided with a through hole and an arc hole, wherein the through hole penetrates through the outer shell in the axial direction, and the arc hole is formed in the periphery of the through hole in a surrounding mode. The through hole and the arc hole are filled with the materials, by weight, 20-35 parts of metal powder, 35-65 parts of alloyed powder and 8-18 parts of mineral powder. The preparing method of the flux-cored wire comprises the steps that the powder is baked into the flux-cored powder, a cold-rolled steel strip is rolled two times into a U-shaped groove structure, the flux-cored powder accounting for 8%-10% of the total weight of the flux-cored wire is added into a U-shaped groove in twice, the U-shaped groove is sealed through a forming machine, the through hole and the arc hole penetrating through the cold-rolled steel strip are formed in the axial direction of the cold-rolled steel strip, the flux-cored powder is filled in the through hole and the arc hole, the cold-rolled steel strip is drawn through a drawbench in each welding pass, the diameter of the cold-rolled steel strip is reduced in each welding pass, and therefore the nickelic and chrome welding permeating flux-cored wire is obtained. The nickelic and chrome welding permeating flux-cored wire can be perfectly welded on nickelic and chrome products, and the fusion of the welding passes is very attractive.

The invention belongs to the field of welding materials, relates to a stainless steel welding wire material, and particularly relates to a high-strength and high-abrasion-resistance stainless steel surfacing flux-cored wire and application thereof. The high-strength and high-abrasion-resistance stainless steel surfacing flux-cored wire comprises a skin and a flux core, and the flux core comprisesthe compositions of, by mass, 25-30% of metal chromium powder, 3-5% of nickel powder, 1-2% of niobium powder, 1-3% of vanadium powder, 8-10% of manganese powder, 5-8% of multi-alloys, 2-6% of rare earth compounds, 5-8% of quartz, 3-5% of magnesia, 3-5% of fluorides, 5-7% of additives, 5-8% of rutile and the balance iron powder. An appropriate amount of particle size controllable hard phases and avariety of synergistic alloy powder are added into the high-strength and high-abrasion-resistance stainless steel surfacing flux-cored wire to change the matrix structure of an existing ferritic stainless steel surfacing alloy, so that the stainless steel surfacing alloy has the advantages of high strength and good abrasion resistance; and meanwhile, preheating and post-weld treatment are not required during surfacing, and no crack is generated. The high-strength and high-abrasion-resistance stainless steel surfacing flux-cored wire is especially suitable for the application of surfacing repair of cutter blades of shield tunneling machines or spiral reamers of brick making machines.

A method for welding by fused metal filling relates to a welding method, overcomes the contradiction that deposition rate is increased while electric arc pressure is increased as well in conventional fusing pole welding, and the welding defects caused by high temperature of an electric arc. The method for welding by fused metal filling includes: firstly, fixing to-be-welded metal on a workbench, heating metal without oxidation film and made of the same material with the to-be-welded metal to fuse under the protection of protection gas, ejecting fused metal liquid to welding seams of the to-be-welded metal by a certain speed, welding by a certain welding speed, and completing welding. The method for welding by utilizing fused metal to fill has the advantages that firstly, deposition speed is increased and welding efficiency is improved evidently; secondly, the contradiction that deposition rate is increased while electric arc pressure is increased as well is avoided, the welding defects caused by high temperature of the electric arc are overcome, and joint quality is improved; and thirdly, fusing depth and width, excess deposition metal of welding seams can be accurately controlled, and adaptability is high. In addition, the method is mainly used for metal welding.

The invention relates to a plasma cladding method and automatic cladding equipment for manufacturing a wear resistant clad steel plate. The method is characterized by adopting a four-gun automatic plasma cladding method, selecting and spreading a wear resistant alloy powder bulk material with thickness being 3-15mm on a base steel plate, putting the base steel plate on a cast iron cladding table with thickness being 80-120mm, fixing the periphery of the base steel plate with the cast iron cladding table through platen clamps, fixing the middle part of the base steel plate with the cast iron cladding table through stop pins, utilizing high energy beam plasma arcs with nozzle aperture ratio being (0.75-0.85):1 as the cladding heat sources and utilizing four guns to synchronously and automatically clad the wear resistant alloy powder bulk material and metallurgically bond the wear resistant alloy powder bulk materials with the base steel plate. The method and the equipment have the following beneficial effects: the manufacturing cost is low; the production efficiency is high; the wear resistant clad steel plate with large area can be manufactured; and the obtained wear resistant clad steel plate has the characteristics of narrow fusion area, small deformation and good product quality.

Provided is a plasma generator apparatus for forming a thin film in local plasma atmosphere at a predetermined spatial period. The plasma generator apparatus includes an electrode body part 141, a plurality of gas supply ports 142 which protrude from the electrode body part 141 at predetermined pitch intervals to direct the substrate and have nozzle holes h1 electing the reaction gas, and a plurality of purge ports 143 which are dented with steps between the gas supply ports 142 and have exhaust holes h2 exhausting the reaction gas.

The invention relates to an efficient low heat input and double-wire surfacing method. The method comprises the following steps that a welding gun with two welding wires is adopted, the included angle between the two welding wires ranges from 10 degrees to 60 degrees, solid welding wires or self-protection flux-cored welding wires can be selected as the welding wires, corresponding welding flux needs to be selected when the solid welding wires are adopted, the two welding wires are connected with the positive electrode and the negative electrode of a power source respectively, the welding wires are conveyed to a position to be welded, arc striking is carried out, arc starting is carried out on the ends of the welding wires, combustion is stabilized, welding is carried out, a direct current power source is adopted as the welding power source, and the welding current ranges from 100 A to 400 A. According to the efficient low heat input and double-wire surfacing method, the fusion covering efficiency is high, and the fusion covering speed in the method is two times of the speed of welding wire fusing in traditional electric arc welding under the same welding current; the base metal is less heated, welding deformation is small, and the welding heat affected zone is small; the weld joint is fast solidified, and the fine grain tissue can be obtained.

The invention provides a carbon dioxide protective welding method of a carbon steel pressure vessel. The method comprises the following steps: grinding welding positions of base materials to form 30-degree grooves; pairing two base materials to be welded, wherein a gap between the two base materials is 1-2mm, and the alignment tolerance is not greater than 1mm; and sequentially welding a base layer, a filling layer, a surface covering layer, a back filling layer and a back surface covering layer of a welding seam according to the welding technological parameters of different welding layers. According to the method, a reasonable welding sequence and reasonable welding technological parameters are determined according to the characteristics of the pressure vessel; a welding heat effect area is narrow, so that the welding stress and deformation can be reduced, and the waste of welding fluxes can be avoided, and as a result, the manufacturing cost can be reduced, the welding efficiency can be improved, the welding quality can be ensured; moreover, the environmental pollution is reduced, so that the energy conservation, emission reduction and environment protection can be achieved; the surface of the welding seam welded by the welding method is fine in texture and nice in appearance, and the splashing is small, so that the appearance quality of the welding seam of the pressure vessel can be improved.

A method for producing a waveguide including a germanium-based core and a cladding is provided, the method including a step of “low temperature” depositing of a shell after forming the core by engraving, such that the deposition temperature is less than 780° C., followed by a step of “high temperature” depositing of a thick encapsulation layer. The shell and the encapsulation layer at least partially form the cladding of the waveguide. Optionally, a step of annealing under hydrogen at a “low temperature”, less than 750° C., precedes the deposition of the shell. These “low temperature” annealing and depositing steps advantageously make it possible to avoid a post-engraving alteration of the free surfaces of the core during the forming of the cladding which is less germanium-rich.

The invention discloses a metal type flux-cored wire and a preparation method of a stainless steel bearing ring. A flux core of the welding wire comprises chromium powder, nickel powder, molybdenum powder, ferrovanadium powder, ferroniobium powder, aluminum powder, tungsten powder, chromium nitride, hafnium boride, tantalum powder, lanthanum oxide, sodium fluoride and the balance iron powder. The flux-cored wire has the advantages that the flux-cored wire is uniform in molten drop transition, the components and proportion of the flux can be adjusted, the required welding seam chemical components can be provided, the deposition speed of the flux-cored wire is high, and the production efficiency is high; and the obdurability, wear resistance, corrosion resistance and high-temperature stability of the high-carbon-chromium type stainless bearing steel can be improved, so that the high-carbon-chromium type stainless bearing steel has more excellent processing properties, and the requirements of practical engineering problems are met. According to the preparation method of the stainless steel bearing ring, CMT welding is used as a heat source, the metal type flux-cored wire is used as a raw material, the stainless steel bearing ring is manufactured through additive manufacturing, efficiency is high, the number of needed devices is small, and production cost is low.