30results about How to "Low formability" patented technology

The invention discloses a low-density and low-modulus polyurethane gel capable of being used as a filling material for a marine exploration streamer and a preparation method for the same. The polyurethane gel disclosed by the invention is formed by mixing and filling hydroxyl-terminated polybutadiene polyurethane prepolymer, polyether polyol and solvent oil under the action of a catalyst, whereinthe density of the polyurethane gel is lower than 0.92 g / cm<3>, and the modulus of the polyurethane gel is lower than 5 MPa. The low-density and low-modulus polyurethane gel disclosed by the invention has good cohesive property, high extensibility and self-healing property, and excellent sound transmission performance; and can be used as a filling material for a marine exploration streamer for realizing the suspension, sound transmission and sonar signal acquisition of the exploration streamer.

There are provided an electronic component metal material which has low insertability / extractability, low whisker formability, and high durability, and a method for manufacturing the metal material. The electronic component metal material 10 includes a base material 11 , an A layer 14 constituting an outermost surface layer on the base material 11 and formed of Sn, In or an alloy thereof, and a B layer 13 constituting a middle layer provided between the base material 11 and the A layer 14 and formed of Ag, Au, Pt, Pd, Ru, Rh, Os, Ir or an alloy thereof, wherein the outermost surface layer (A layer) 14 has a thickness of 0.002 to 0.2 μm, and the middle layer (B layer) 13 has a thickness larger than 0.3 μm.

The application belongs to the technical field of composite resin materials, and in particular relates to a composite resin material used for a pressure gas storage container and a preparation method thereof. The method for preparing a composite resin material for a pressure gas storage container provided by the present application includes the following steps: mixing carbon nanotubes and dispersed oil to prepare carbon nanotube slurry; mixing nylon 6 and high-density polyethylene to form Resin mixture; after the resin mixture is melted in a twin-screw extruder, the carbon nanotube slurry is added, and the composite resin material is prepared by extrusion and granulation. The preparation method provided by the present application can improve the dispersibility of carbon nanotubes in the matrix resin, thereby improving the low temperature performance of the composite material and improving the heat dissipation performance.

The invention belongs to the field of manufacturing of aluminum alloy plates, and relates to an aluminum alloy plate with high bake hardenability and a preparation method thereof. The aluminum alloy plate with the high bake hardenability is prepared from, by weight, 0.4-0.9% of Mg, 0.6-1.4% of Si, 0.008-0.12% of Ti, 0.0005-0.04% of B, no more than 0.3% of Fe, 0.06-1.5% of Zn, 0.3-0.8% of Cu, 0.03-0.25% of Sn, no more than 0.15% of impurities and the balance Al, wherein the content of each the impurity is no more than 0.05%. By adoption of the aluminum alloy plate with the high bake hardenability and the preparation method thereof, the problem that MgO is likely to be formed on the surface of an aluminum alloy plate adopted by an automobile body covering part in the prior art, and consequentially, the binding property and corrosion resistance after painting of the automobile body covering part are poor is solved.

The invention provides seawater-corrosion-resistant copper alloy containing zirconium. The seawater-corrosion-resistant copper alloy containing zirconium is prepared from, by mass percent, 63%-75% of Cu, 0.05%-1.5% of Al, 1.91%-3.5% of Si, 0.26%-2.0% of P, 0.0008%-0.006% of Zr and the balance Zn, and the copper alloy is in a single alpha phase. The invention further provides a preparation method of the copper alloy. By mass percent, the reaction substances are weighed, wherein Cu, Al, Zr, Si and Zn are elementary substances, and P is added in the manner of Cu-P intermediate alloy; and the above substances are added into a reaction vessel, smelting is performed for 2-5 hours at the temperature of 1000-1200 DEG C, and the seawater-corrosion-resistant copper alloy is obtained after cooling. The seawater-corrosion-resistant copper alloy is resistant to long-time corrosion of seawater, meanwhile, other performance of brass is not damaged, and the alloy has the beneficial effects of being high in strength, good in machining performance, high in hardness and resistant to seawater scouring.

The invention discloses a production method of ultralow-carbon interstitial free soft steel, which comprises the following steps: hot rolling, cold rolling and cover annealing. The casting blank adopted by the hot rolling comprises the following components in percentage by weight: at most 50 ppm of C, at most 0.15% of Mn, at most 0.010% of S, at most 0.020% of P, greater than or equal to 0.10% and less than or equal to 0.20% of Si, at most 0.070% of Ti, 200-500 ppm of Als, at most 25 ppm of Ca, at most 50 ppm of N and the balance of Fe. In the hot rolling, a forepart cooling process is adopted, the finishing temperature is 900+ / -20 DEG C, and the coiling temperature is 700+ / -20 DEG C. In the cold rolling, the reduction in cold rolling is greater than or equal to 70%. In the cover annealing, an all-hydrogen cover annealing furnace is adopted, the dew point is lower than -50 DEG C, the hot-spot temperature is 740+ / -10 DEG C, the cold-point temperature is 720+ / -10 DEG C, and the holding time is 20-25 hours. By improving the steel grade components, improving the production process by Si alloying and enhancing the processability of the finished product, the method has the advantages of simple technique and no additional increase of cost; the experimental production is performed to obtain the expected effect; and the production process is stable, and the finished product has excellent performance.

The invention provides a martensite-ferrite-austenite complex-phase abrasion-resistant steel plate with a low yield ratio and a manufacturing method thereof. The manufacturing method of the steel plate comprises the steps of smelting different alloy components; manufacturing a steel billet through continuous casting; and carrying out heating, controlled rolling, controlled cooling, thermal treatment, and the like. The martensite-ferrite-austenite complex-phase abrasion-resistant steel plate is characterized in that (1) the manufactured steel plate is of a martensite-ferrite-austenite multi-phase composite structure; (2) the yield ratio of the manufactured steel plate is greatly decreased compared with that of a traditional abrasion-resistant steel plate, the yield ratio is smaller than orequal to 0.75, and the manufactured steel plate has excellent formability; (3) the hardness of the manufactured steel plate is 300 HB to 420 HB, and acquisition of good abrasion resistance is guaranteed; and (4) the abrasion resistance is excellent, and the abrasion resistance of the obtained abrasion-resistant steel plate is doubled or above compared with that of a single-martensite abrasion-resistant steel plate with the same hardness. The martensite-ferrite-austenite complex-phase abrasion-resistant steel plate has good welding performance and higher low-temperature impact toughness, and isparticularly applicable to manufacturing of devices or parts like concrete stirring tank rollers, dump truck carriages and pipelines for channel dredging.