35results about How to "Fusible" patented technology

A carburetant for smelting steel is prepared from C (35-57 %), Mn (5-35%), silica sol (0.5-2 %) and carbonate (0.5-2 %) through proportioning, stirring, dia pressing and baking at 105-120 deg.C for 6-8 hrs.

The invention discloses a metamorphic process of a hypo eutectic casting aluminum-silicon alloy, which comprises the steps of: 1) dosing according to components of the hypo eutectic casting aluminum-silicon alloy; 2) cleaning, drying and placing the alloy and an intermediate alloy into a crucible resistance furnace which is 5kW in power, heating till completely being melted, and controlling the temperature of the melt at 700+/-5 DEG C; 3) pressing pure Mg weighed in the step 1) into a melt obtained from the step 2) to stand for 3-5 minutes by a graphite bell jar with preheating temperature of 300 DEG C; 4) heating the melt obtained from the step 3) to be at 740-760 DEG C, adding weighed AlSc4 intermediate alloy till the intermediate alloy is completed melted, refining for 15 minutes by rotatably jetting high purity argon and drossing after standing for 10-20 minutes; 5) cooling the melt obtained from the step 4) to be at 680-700 DEG C and pouring into sand moulds, then cooling along with the mould to be at room temperature to obtain an as-cast structure containing fiberous and short-rod-shaped eutectic Si; and 6) performing heat treatment for cast obtained from the step 5) according to a T6 heat treatment process to obtain a particle eutectic silicon structure with good mechanical properties.

A surface covering comprises a show surface, decorative layer, or face and an optional backing layer. The show surface, decorative layer, or face can comprise a decorative textile or fabric layer that is optionally saturated, covered, and/or coated with a protective film or film-forming composition. The backing can optionally comprise an agglomerated mass of particles, a foam, foam and particles, a felt, or a combination thereof. Methods for producing such surface coverings are also disclosed.

The invention provides an electric fuse structure and a formation method thereof. The electric fuse structure comprises an electric fuse, a base, an interlayer medium layer and other parts; the electric fuse comprises a first electrode, a second electrode, and a connecting fuse which is connected with the first electrode and the second electrode; the connecting fuse is equipped with at least one folding structure. According to the electric fuse structure, the current crowding effect occurs at the corner of the folding structure when loading voltage to the electric fuse, and the current density at the corner is more than that in other parts of the electric fuse, which is beneficial for the self-heating effect of the electric fuse; therefore, the connecting fuse is easily fused at the corner, and as a result, the programming voltage of the electric use can be reduced.

The invention discloses a defect repair welding process for an arc-surface weld joint. The process comprises the following steps that S1, flaw detection is conducted on the weld joint of an arc surface of a workpiece, and a defect area is marked; S2, base metal around the defect area is protected and isolated, and the weld joint of the defect area is dug out; S3, flaw detection is conducted on thedefect area with the weld joint dug out, if no defect is found, S4 is executed, and if a defect is found, S5 is executed; S4, the weld joint of the defect area is dug out again, and S2 is executed; S5, the periphery of the defect area is cleaned; and S6, the workpiece is placed at a PA repair welding position, and repair welding is conducted on the defect area. According to the defect repair welding process for the arc-surface weld joint, the interlayer penetration can be effectively controlled through a layer-by-layer repair welding method, the operation difficulty is reduced, the problem that parts are scrapped due to improper operation of a repair welding method is solved, internal defects of the weld joint are eliminated, consumable loss is reduced, and the production efficiency is improved.

The invention relates to the field of boat titanium alloy toughness investigation test materials applied to a boat titanium alloy application research and evaluation system, and particularly relates to a brittle weld bead surfacing welding wire for a crack source of titanium alloy applied to a boat and a preparation method of the brittle weld bead surfacing welding wire. The welding wire is prepared from the following elements and components in percentage by mass: 2.0-1.0 percent of aluminum, 3.0-6.0 percent of molybdenum, 5.0-10.0 percent of vanadium, 2.0-5.0 percent of chromium, 1.0-5.0 percent of tin and the balance of titanium. The welding wire provided by the invention can solve the problem about natural sharp cracks generated in a boat titanium alloy toughness investigation application process of a drop-weight test, an explosion test and the like, and thus the drop-weight test and explosion test methods for the titanium alloy applied to the boat can be improved, and the boat titanium alloy application research and evaluation system is more complete.

The invention discloses an electric fuse structure. The electric fuse structure comprises an electric fuse, and an anode and a cathode which are respectively arranged at two ends of the electric fuse and are connected with the electric fuse, wherein the electric fuse comprises at least three sub electric fuses which are mutually connected end to end, and included angles of every two end-to-end connected sub electric fuses are greater than 0 DEG and smaller than 180 DEG. The electric fuse is guaranteed to have enough large length to make the electric fuse be more easily fused while the distance between the anode and the cathode can be reduced, so the area occupied by the electric fuse structure in an integrated circuit chip can be reduced. When the electric fuse structure and metal interconnection wires are synchronously formed on the integrated circuit chip, layout design of the metal interconnection wires in the integrated circuit chip has more selections.

The invention discloses benzoxazine end-capped imide which is obtained by reacting diamine end-capped imide serving as an amine source with monohydric phenol and paraformaldehyde, the diamine-terminated imide is obtained by thermal cyclization of micromolecular polyamide acid in inert gas; the micromolecular polyamide acid is prepared by condensation reaction of a dianhydride monomer and a diamine monomer. The invention further discloses a preparation method of the benzoxazine end-capped imide and a polybenzoxazine end-capped imide film prepared from the benzoxazine end-capped imide. The invention further discloses a preparation method of the benzoxazine end-capped imide and a polybenzoxazine end-capped imide film prepared from the benzoxazine end-capped imide. The benzoxazine-terminated imide disclosed by the invention is fusible and soluble, and is easy to process; the polybenzoxazine-terminated imide film has the advantages of being excellent in mechanical property, thermal stability and flame retardant property.

Provided is an electric fuse structure and a formation method thereof. The electric fuse structure comprises a substrate, a first conductive layer which is arranged on the surface of the substrate, a layer-to-layer dielectric layer which covers the first conductive layer and the substrate, a first conductive plug which is arranged on the surface of the first conductive layer and penetrates through the layer-to-layer dielectric layer, and a second conductive layer which is arranged on the surfaces of the first conductive plug and the layer-to-layer dielectric layer. The surfaces of the bottom parts of the first conductive layer and the first conductive plug are partially contacted, or the surfaces of the top parts of the second conductive layer and the first conductive plug are partially contacted. The first conductive plug is partially contacted with the first conductive layer and the second conductive layer, and the partially contacted positions are higher in resistance, higher in electric field intensity and higher in electro-migration rate so that the partially contacted positions are more liable to be fused, fusing time is shortened and control is easier.

The invention provides an armature assembly and a starter, relates to the technical field of starter overload protection, and aims to optimize the structure of the armature assembly to a certain extent and ensure the consistency of overload failure modes of the starter. The invention provides an armature assembly which comprises an iron core, an armature winding and an abutting piece. The armature winding is wound on the iron core, a first containing space and a second containing space are defined at the two ends of the iron core respectively, and the abutting piece is arranged in the first containing space and/or the second containing space and abuts against the armature winding.

The invention discloses a polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane, and belongs to hollow ultrafiltration membranes for sewage treatment. A basalt fiber layer of the hollow ultrafiltration membrane is cylindrical, and a polytetrafluoroethylene layer is coated outside the basalt fiber layer; micropores are densely distributed on the cylinder wall of the basalt fiber woven layer, and the combined surfaces of the polytetrafluoroethylene layer and the basalt fiber layer are compounded at high temperature to form the hollow ultrafiltration membrane with membrane center hole composite fibers; the basalt fiber layer is formed by interweaving, laminating and weaving basalt fibers into a cylinder shape through a weaving machine, and a central hole of the cylinder is a membrane central hole; microorganisms, colloids and other turbid substances in water can be isolated; and the polytetrafluoroethylene layer is made of polytetrafluoroethylene fibers which are interwoven, laminated, woven and coated outside the basalt fiber layer through a weaving machine. The polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane has the advantages of high cost performance, low price, no toxicity and environmental protection; and basalt and polytetrafluoroethylene are similar in melting point, high-temperature compounding is achieved, breaking strength is high, flame retardance is good, modulus is high, and high-temperature poisonous gas and dust can be efficiently filtered.