50results about How to "Uniform wire diameter" patented technology

The invention relates to a method for manufacturing ultrafine metal fibers, which mainly comprises the steps of: carrying out drawing and compaction on metal micro-wires, then carrying out annealing treatment and adopting down quenching when composite wires exit a heating region; further carrying out the drawing and the annealing link on the composite wires, repeatedly carrying out the operation and carrying out finish drawing till achieving the size and the dimension required by the process; and carrying out electrolytic stripping, cleaning, drying, packaging and storage on the well drawn composite metal wires. The ultrafine metal fibers which adopt the micro-wire bundle cold reducing-diameter drawing technology can achieve 2 mu m and have the advantages of uniform wire diameter, continuous production, low cost, high efficiency and the like; the method utilizes the rapid rise method for avoiding a brittle zone and utilizes the sharp drop method for keeping the high-temperature single-phase tissues of the composite wires, thereby achieving the state of softest composite wires and greatest ductility; and the method solves the problem of matching compression ratio with drawing speed and realizes the purposes of uniform fiber diameter and small coefficient of variation.

The invention provides a horizontal type stirring sanding groove for producing an efficient composite electroplated diamond wire and a use method. A horizontal type stirring sanding groove device mainly comprises a sanding groove body, an overflow liquid circulating device, a horizontal type stirring device, a steel wire conveying device, an automatic material supplementing device and the like. The horizontal type stirring device of a stirring paddle with the wide axial covering area is adopted in the sanding groove device, a liquid flow field of the whole axial area of the sanding area is uniform and consistent in distribution, diamond micro powder has the good dispersion effect in a plating solution, the diamond micro powder is not likely to be united on a steel wire, distribution is good, and finished product wires are uniform in diameter; the electroplated diamond wire which is controllable in diamond sanding amount and good in distribution can be continuously produced, the structure is reasonable, operation is convenient and rapid, and running is efficient.

The invention relate to a preparation method of an Nd-Fe-Co ternary alloy magnetic nanowire. The method comprises the following steps of (1) mixing NdC<13>.6H<2>O, FeC<12>.4H<2>O, CoC<12>.6H<2>O and deionized water to prepare a Nd<x>Fe<y>Co<z> deposition liquid; and (2) performing electrochemical deposition by employing a DC voltage-stabilization power supply under a DC voltage of 1.5-2V and by taking graphite as a positive electrode, an AAO template as a negative plate and the Nd-Fe-Co deposition liquid prepared in the previous step as an electrolyte, and finally obtaining the Nd-Fe-Co ternary alloy magnetic nanowire, wherein a deposition current is (0.5-20) mA, and deposition time is 1-2 hours. The nanowires are huge in quantity and high in deposition rate, and the nanowires are arrangedin parallel, are high in order, uniform in diameter and large in length-diameter ratio.

The invention provides a modified carbon fiber reinforced polyamide 6 wire for 3D printing, and a preparation method and application thereof. A modified carbon fiber reinforced polyamide 6 composite material of the invention is prepared from the following components in parts by weight: 85-95 parts of a polyamide 6 material, 5-15 parts of carbon fibers and 1-3 parts of a modified silane coupling agent. According to a technical scheme provided by the invention, carbon fiber grafting is facilitated by utilizing the modified silane coupling agent; the prepared composite material has the characteristics of uniform wire diameter, smooth surface, excellent mechanical property and relatively small material shrinkage rate, can be applied to the field of 3D printing consumables, and overcomes the technical defects that a polyamide 6 material is prone to buckling deformation in the printing process, the mechanical property of a printed member is poor and wires are prone to generation of bubbles in the prior art. The polyamide 6 printing wire of the invention has practical value, the maximum tensile strength of the polyamide 6 printing wire can exceed 110 MPa under the condition of a low carbon fiber content (10-15%), and the polyamide 6 printing wire is far superior to many polyamide 6 printing wires on the market.

The invention provides an ABS consumable for 3D printing, and a preparation method thereof. The ABS consumable for 3D printing comprises acrylonitrile-butadiene-styrene resin, talcum powder master batches, calcium carbonate, a styrene-butadiene-styrene block copolymer, an antioxidant, a lubricant, a compatibilizer and color master batches. The preparation method comprises the following steps: rawmaterial drying, high-speed mixing, blending extrusion granulation, secondary drying and wire extrusion preparation. The product has the characteristics of low production cost, high mechanical strength, excellent processing fluidity, good impact resistance, long service life, uniform wire diameter, smooth surface, high glossiness and low shrinkage rate.

The invention discloses a device for manufacturing an electroplated diamond wire saw. The device comprises a wire unwinding chamber, a pretreatment tank, a sand feeding tank, a thickening tank, a drying chamber and a wire winding chamber; a cathode of the sand feeding tank is connected with a negative electrode of a power supply through a conductive shaft; a conductive cathode wheel is connected to the conductive shaft through a metal bearing; a base wire is wound on the conductive cathode wheel; the cathode of the thickening tank is also connected with the negative electrode of the power supply through the conductive shaft; the conductive cathode wheel is connected to the conductive shaft through the metal bearing; the base wire is wound on the conductive cathode wheel. According to the device disclosed by the invention, in the sand feeding tank and the thickening tank, each base wire is wound on the cathode wheel of the corresponding cathode so that the base wire becomes a negative electrode; each metal bearing mounted between the corresponding cathode wheel and the corresponding conductive shaft is capable of guaranteeing good electric conductivity and is also capable of making the corresponding cathode wheel rotate freely, so breakage of each base wire is prevented. In comparison with the previous conduction ways such as electric brush, the conduction way of the device disclosed by the invention is capable of enhancing the electric conductivity, free of loss, free of generation of graphite dust, and conductive to uniformity and wire diameter consistency of electroplated diamond particles on each base wire.

The invention belongs to the technical field of 3D printing, and relates to special polyvinyl alcohol butyral resin for 3D printing. The viscosity of the resin in an ethanol solution at a concentration of 10 percent is 40 to 250 Pa.s; the residual butyraldehyde content is less than or equal to 10 ppm, and the residual diethylhexenal content is less than or equal to 1,000 ppm. The invention furtherprovides a preparation method of the polyvinyl alcohol butyral resin. The preparation method comprises the following steps: dissolving polyvinyl alcohol which has a polymerization degree of 300 to 1,000 and an alcoholysis degree of 90 to 99 percent and is used as a raw material, and generating condensation reaction with aldehyde under the catalysis of acid, thereby obtaining polyvinyl alcohol butyral resin powder through neutralization reaction, washing and drying. When the special polyvinyl alcohol butyral resin for 3D printing provided by the invention is applied, no auxiliary resin is required to be added, and no solvent or plasticizer is needed; in a process of producing a 3D printing wire and a 3D printing process, no exhaust gas and odor are generated; and in addition, the product is relatively high in mechanical property and environmental aging resistance.

The invention relates to a system and method for controlling the diameter of absorbable suture lines in the spinning forming process. A spinning device formed by the structure of a reverse series connection double-hydraulic-cylinder transmission mechanism is adopted, and every time forward rotation and backward rotation of a direct-current servo motor are switched, a cylindrical piston A and a cylindrical piston B reciprocate once. The flowing speed of a stock solution sprayed out by a nozzle can be controlled by adjusting the rotating speed of the forward rotation and the backward rotation of the direct-current servo motor, the nozzle can be controlled to spray out nascent state yarns with the corresponding diameter according to the set flowing speed value accordingly, the yarns are treated through the working procedures of solidification liquid passing, stretching, crosslinking, washing and drying, and then the absorbable suture lines are formed through winding of a yarn winding mechanism. It is guaranteed that the input stock solution and the output stock solution are uninterrupted in the spinning process and the flowing speed of the output stock solution is almost free of fluctuation, and the absorbable suture lines with the line diameter meeting the requirement are obtained. The diameter of the detected absorbable suture lines is controlled with an improved generalized predictive control algorithm, the calculation process of the algorithm is simplified, the stability of the control system is improved, and a better control effect is achieved.

The invention discloses a welding wire machining device. The welding wire machining device comprises a wire releasing part, a pressing and holding part, a cleaning part, a lubricating part, a forming part and a winding part which are distributed in sequence. The wire releasing part is used for releasing metal wires. The pressing and holding part comprises a bracket, a supporting shaft, a pressing shaft and a spring; the bracket is provided with a chute which is formed in the vertical direction; the supporting shaft is horizontally installed on the bracket; the pressing shaft is arranged above the supporting shaft, horizontally arranged and movably connected with the chute; a threading channel is formed between the pressing shaft and the supporting shaft; and one end of the spring is connected with the pressing shaft, the other end of the spring is connected with the bracket, and the spring is used for applying downward acting force to the pressing shaft.

The invention discloses a device for processing and producing welding wires. The device for processing and producing the welding wires comprises a pay-off mechanism, a lubricating mechanism, a shaping mechanism and a wire drawing mechanism arranged sequentially. The lubricating mechanism comprises a box body, a spraying assembly, a cleaning assembly, a lubricating assembly and a leveling assembly; a first wire threading hole, a first connecting hole, a second connecting hole, a third connecting hole and a second wire threading hole are formed in the box body and are arranged coaxially; a first chamber, a second chamber, a third chamber and a fourth chamber are arranged in the box body; the first wire threading hole and the first connecting hole are connected with the first chamber; the first connecting hole and the second connecting hole are connected with the second chamber; the second connecting hole and the third connecting hole are connected with the third chamber; and the third connecting hole and the second wire threading hole are connected with the fourth chamber.

The invention discloses a preparation method of a Nd-Fe-B magnetic nanowire array. The preparation method comprises the following steps: neodymium chloride (NdCl3.6H2O), ferrous chloride (FeCl2.4H2O),boric acid (H3BO3) and de-ionized water are mixed to prepare NdFeB alloy solution; a complexing agent is added to obtain depositing liquid, wherein the complexing agent is glycine (NH2CH2COOH), ammonium chloride (NH4Cl) and ascorbic acid (C6H8O6); and graphite is used as an anode, an AAO template is used as a cathode, the Nd-Fe-B depositing liquid prepared in the last step is electrolyte, and a direct-current voltage-stabilization power supply is used for electrochemical deposition to finally obtain Nd-Fe-B ternary alloy magnetic nanowires. The obtained nanowires are high in number and deposition rate, arranged in parallel, ordered in height, uniform in diameter and higher in length-diameter ratio.