39results about How to "Wide range of process parameters" patented technology

This invention involves a cryogenic phosphorization liquid of zinc, belonging to the field of phosphorization liquid for steel surface treatment. The phosphorization liquid of zinc of the invention is composed by the following composition as the raw materials, zinc oxide 100g / L, 80%phosphoric acid 230g / L,30% nitric acid 280g / L, nickel sulfate 2.67g / L, manganese carbonate 0.2g / L, ethylene dinitrilotetraacetic acid 0.66g / L, citric acid 5.0g / L, sodium perborate 1.0g / L, sodium carbonate 2.3g / L. The phosphorization liquid of zinc of the invention is characterized in low temperature; short time, low energy consumption, and can form an excellent dense phosphorization crystal film in the steel surface. The phosphorization liquid has broad process parameters range, is easy to adjust and improves the quality of coating products.

The invention provides an injection mold capable of realizing local delayed ejection, and is used for solving the problem that in the prior art, ejection block marks are generated when the mold is used for forming. The injection mold capable of realizing the local delayed ejection comprises a movable mold, a fixed mold, a first straight ejector rod and a first straight ejector block, wherein a forming inner cavity is formed between the movable mold and the fixed mold, the movable mold comprises a driving plate, the first straight ejector rod is arranged in the movable mold, the driving plate can push the first straight ejector rod in the mold closing direction, the first straight ejector block is installed at the end, close to the forming inner cavity, of the first straight ejector rod, afirst elastic piece is arranged at the end, away from the forming inner cavity, of the first straight ejector rod, the first elastic piece is installed at the end, away from the forming inner cavity,of the first straight ejector rod, the first elastic piece is used for tensioning the first straight ejector rod in the movable mold side direction, and in an initial state of the driving plate, a first initial interval is formed between the first straight ejector rod and the driving plate. The injection mold capable of realizing the local delayed ejection can avoid generation of the ejection block marks.

The invention discloses an electrolyte for preparing fine copper powder and a use method thereof. The electrolyte comprises the following components: 5g / L of copper sulfate, 400-800g / L of phosphoric acid, 200-600g / L of distilled water, 1-2g / L of gelatin and 2g / L of benzotriazole. Operation conditions of electrolysis are as follows: the interelectrode distance is 10-30cm, the temperature of the electrolyte is 5-30 DEG C, the density of cathode current is 3-8A / dm2, and a powder scraping period is 10-25min. Cathode copper is used as an anode of electrolytic production, and a 316 stainless steel plate is used as a cathode for scraping powder. Compared with a sulfuric acid electrolysis method for preparing the fine copper powder, the invention has the advantages of simple electrolyte prescription, easy control, wide technological parameter range, long service life and high batch production stability, and the prepared fine copper powder has fine and uniform distribution granularity, high purity, good forming property and strong oxidation resistance.

The invention discloses a discontinuous point type blank holder for a fine blanking die and a design method of technological parameters of the discontinuous point type blank holder. The blank holder comprises a point type blank holder body, wherein a group of raised points are uniformly distributed on the lower surface of the point type blank holder body along the shape contour of a part required to be formed through fine blanking; rounded corners are arranged on the raised points; when the thickness of the part required to be formed through fine blanking is smaller than 5 mm, the point type blank holder is single-sided, and the technological parameters are determined; and when the thickness of the part required to be formed through fine blanking is larger than or equal to 5 mm, a group of raised points which have the same parameters with the raised points on the point type blank holder body are arranged on the upper surface of the fine blanking die, and the technological parameters are determined. According to the design method, aimed at fine blanking parts with different thicknesses, the technological parameters of the discontinuous point type blank holder can be effectively determined, the discontinuous point type blank holder can be widely applied to fine blanking, the cost of the fine blanking die is reduced, and the perfectness ratio of the surfaces of the parts is increased.

The invention provides a high-performance ITO granulation powder preparation method, which comprises: weighing indium oxide nanometer powder with a purity of more than 99.99% and tin oxide nanometer powder with a purity of more than 99.99% according to a mass ratio of 9:1, adding deionized water and a dispersing agent to prepare a slurry with a certain solid content, and carrying out ball milling with a sand mill to achieve a certain fineness; adding a binder and an antifoaming agent, and carrying out spray drying to obtain powder; adding cyclone powder, a certain amount of a dispersing agent and water to the powder to prepare a slurry with a certain solid content; and carrying out high speed dispersing, and carrying out spray drying to obtain the final granulation powder. According to the present invention, the prepare granulation powder has the solid sphere shape and the large bulk density, and the prepared indium tin oxide has the single-phase micro-particle dispersed state, has the characteristics superior to the agglomerated powder, has good fluidity and good gradation, and is beneficial for meeting the molding requirement of the high-end ITO target.

The invention relates to a method for preparing an inorganic binding material for solar cell positive electrode paste and the inorganic binding material obtained through the preparation method. In particular, the method includes the following steps that (1) high temperature smelting powder is prepared, (2) high temperature sintering powder is prepared, and (3) the prepared high temperature smelting powder and the prepared high temperature sintering powder are mixed.

The invention provides slantwise type self-tidying integrated equipment with functions of handle cutting, handle releasing and cutting off, comprising an accessory material charging part and a handle-cutting, handle-releasing and cutting-off part, wherein the accessory material charging part comprises an accessory material charging belt which is slantwise arranged and a base support belt which is perpendicular to the accessory material charging belt, vertical plates which are perpendicular to the accessory material charging belt are evenly arranged on the accessory material charging belt, the handle-cutting, handle-releasing and cutting-off part comprises a handle-cutting and handle-releasing machine, a cutting-off machine and supports of the handle-cutting and handle-releasing machine and the cutting-off machine, the sliding pair connection is formed between the lower part of the handle-cutting and handle-releasing machine and the support through a slide groove and a slide rail, the sliding pair connection is formed between the lower part of the cutting-off machine and the support through the slide groove and the slide rail, support belts of the handle-cutting and handle-releasing machine and the cutting-off machine and the accessory material charging belt are arranged on the same slantwise plane, and driving mechanisms matched with the sliding pairs are arranged between the lower parts of the handle-cutting and handle-releasing machine and the cutting-off machine and the supports. The accessory material charging part of the equipment is slantwise arranged, so that the self-tidying can be realized, the manual investment can be reduced, and the work efficiency and quality can be improved.

The invention relates to a method for deep penetration laser welding of a plate under the assistance of ultrasound. The method is characterized by comprising the following steps that firstly, first base metal (10) and second base metal (11) are machined to form butt joint end faces, and a series of inclined semicircular grooves are machined; secondly, the first base metal (10) and the second base metal (11) are in butt joint and are clamped, and a series of inclined blind holes are formed in a weld bead; thirdly, a first ultrasonic amplitude-changing rod (3) is pressed to the upper surface of a workpiece to be welded; fourthly, a second ultrasonic amplitude-changing rod (4) is fixed to one side of a laser welding head; fifthly, an ultrasonic generation device is started, the ultrasonic frequency is adjusted; sixthly, a laser beam (5) perpendicularly irradiates the upper surface of the workpiece, and the welding process is completed under continuous ultrasonic vibration; and seventhly, after welding is completed, ultrasonic vibration is maintained for 1-2 minutes. In the method, due to the pre-formed inclined blind holes and ultrasonic vibration, weld joint root leakage caused by molten pool downward flowing driven by local evaporation back flushing pressure of the front edge walls of the small holes is avoided.

The invention discloses continuously self-catalyzed deposition chemical plating solution of tin and a using method thereof. Half-bright and silvery-white tin-copper alloy deposition layers are obtained on pure copper and a copper alloy substrate. In the chemical plating solution, stannous chloride serves as a main salt, thiourea serves as a main complexing agent, trisodium citrate serves as an auxiliary complexing agent, sodium hypophosphite serves as a reducing agent, disodium ethylene diamine tetraacetate serves as an antioxidant, a hydrochloric acid serves as a stabilizing agent, gelatin serves as a leveling agent and benzaldehyde serves as an auxiliary brightening agent. The using method comprises the following operating conditions that: the pH value of the plating solution is 0.8 to 2.0; the temperature is 80 to 90 DEG C; the loading capacity is 0.8 to 1.5 dm2 / L; and the mechanical stirring speed is 50 to 100 rpm. The continuously self-catalyzed deposition chemical plating solution of the tin and the using method thereof have the advantages of capability of obtaining half-bright and silvery-while tin-copper alloy clad layers with different thicknesses by controlling chemical plating time, high deposition rate, remarkable grain refinement, improvement on surface evenness of the clad layer and batch production stability, secure interface combination, strong change resistance of the clad layer after being passivated, and broad application prospect in the products of deep hole elements, blind hole elements, difficult-to-handle miniature electronic components and parts, printed circuit boards PCBs and the like.

The invention relates to the technical fields of amorphous materials and welding, in particular to a welding method for obtaining amorphous joints for FeSiB amorphous strips, which belongs to the connection technology of amorphous materials. Aiming at the limited size of the Fe-based amorphous alloy strip, brittle material, extremely thin material, and poor weldability, the method uses micropulse laser technology to successfully obtain a completely amorphous joint. The steps are as follows: grind the surface of the FeSiB amorphous alloy strip sample, clean it, and dry it; fix the base metal by clamping one end and flattening the other end on a special fixture designed by ourselves, and then blow Ar gas protection welding on the side. Melt pool: micro-pulse laser technology is used for lap welding, and process parameters such as pulse power P, pulse width T, and pulse frequency F are optimized to obtain completely amorphous welded joints. The invention has the following advantages: simple welding tooling, high welding efficiency, low cost, good joint quality, and the joint is completely amorphous.

The invention discloses a discontinuous point type blank holder for a fine blanking die and a design method of technological parameters of the discontinuous point type blank holder. The blank holder comprises a point type blank holder body, wherein a group of raised points are uniformly distributed on the lower surface of the point type blank holder body along the shape contour of a part required to be formed through fine blanking; rounded corners are arranged on the raised points; when the thickness of the part required to be formed through fine blanking is smaller than 5 mm, the point type blank holder is single-sided, and the technological parameters are determined; and when the thickness of the part required to be formed through fine blanking is larger than or equal to 5 mm, a group of raised points which have the same parameters with the raised points on the point type blank holder body are arranged on the upper surface of the fine blanking die, and the technological parameters are determined. According to the design method, aimed at fine blanking parts with different thicknesses, the technological parameters of the discontinuous point type blank holder can be effectively determined, the discontinuous point type blank holder can be widely applied to fine blanking, the cost of the fine blanking die is reduced, and the perfectness ratio of the surfaces of the parts is increased.