93 results about "Metallurgy" patented technology

A sheet-like pane bearing a low-maintenance coating on one surface and a low-emissivity coating on the opposite surface, wherein one of the low-maintenance coating and the low-emissivity coating has a single surface reflectivity of less than 3 times, and more than one-third, that of the other coating.

The invention refers to a kind of plant fibre liquefied and the manufacturing method, and the usage. It is made up by mixing 100 shares of polyatomic alcohol, 0-12 shares of phenol, 1-15 acid and heating them to 110-160deg.C, then adds in dried and crushed plant fibre material about 5-40 shares, reacts for 20-150 minutes, then cools them with ice. The product can be used to produce polyurethane foaming material. The plant fibre liquefied material not only can be lumber fibre material, but also can use other plant fibre material, it upgrades the use of material other than lumber resources, it reduces the consumption of chemical agent, the other hand, it can improve the flexibility of high polyurethane.

An internal member of a plasma processing vessel includes a base material and a film formed by thermal spraying of ceramic on a surface of the base material. The film is formed of ceramic which includes at least one kind of element selected from the group consisting of B, Mg, Al, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd. In addition, at least a portion of the film is sealed by a resin.

BiFeO₃ precursor solution is coated on the surface of an underlying member. Teat treatment is performed after the coating to form a dielectric film. The dielectric film is heated in a non-oxidizing atmosphere to crystallize the dielectric film. With this method, a ferroelectric material can be obtained which contains constituent elements of Bi, Fe and O and has crystal lattice of a tetragonal or orthorhombic system.

The invention discloses a Zn-Sr series zinc alloy as well as a preparation method and application of the Zn-Sr series zinc alloy. The zinc alloy comprises Zn and Sr, wherein the mass percent of Sr in the zinc alloy ranges from 0% to 10%, but is not equal to 0. The zinc alloy also comprises trace elements including Si, P, Li, Ag, Sn and at least one selected from rare earth elements, wherein the mass percent of the trace elements ranges from 0% to 3%, but is not equal to 0. The mechanical property of the Zn-Sr series zinc alloy disclosed by the invention meets the requirements for strength and toughness of a medical implant material, is nontoxic and favorable in tissue compatibility and blood compatibility, can be degraded by using body fluid and can be applied to preparation of medical implants; and the dissolved metal ions can be absorbed and utilized by living bodies to promote bone growth or can be discharged out of bodies through metabolism.

Provided are film-coated powders, coating compositions and coated materials that give off vivid and deep colors. The film-coated powders have a coating film on the surface of substrate particles, and has spectrophotometric characteristic in that, when the ratio of the length at 400 nm between 380 and 780 nm on measuring the reflection spectrum from the vertical reflection light of the film-coated powder (wavelength definition width L) to the height of the reflectance 100% in the vertical axis (reflectance definition width R), L/R is 5/2, then the ratio of the peak height (H) to the half-value width (W), H/W is at least 1.

There is provided a high-tensile steel sheet containing 0.15 to 0.25 mass % of C, 0.1 to 2.0 mass % of Si, 0.10 to 1.0 mass % of Mn, 0.5 to 3.5 mass % of Cr, 0.02 mass % or less of P, 0.01 mass % or less of S and the balance being Fe and unavoidable impurities based on the total mass of the steel sheet and satisfying a content ratio of Mn/(Mn+Cr)<0.50.

The invention provides a laser wire fusing additive manufacturing titanium alloy component structure refining and isometric crystal converting method. The laser wire fusing additive manufacturing titanium alloy component structure refining and isometric crystal converting method specifically comprises the following steps that an ultrasonic impact micro forging device and a laser wire fusing additive manufacturing device are coupled, and a composite manner that the laser wire fusing additive manufacturing device is arranged in front and the ultrasonic impact micro forging device is arranged onthe back is adopted for synchronous composite manufacturing; according to the workpiece shape, the path is reasonably planned, related parameters of the ultrasonic impact micro forging device and thelaser wire fusing additive manufacturing device are set, effective compatibility is achieved, and the composite manufacturing process is controlled; and according to path planning and system parameters, layer-by-layer ultrasonic impact micro forging treatment is synchronously conducted in the laser wire fusing process till the titanium alloy component additive manufacturing process is finished. The provided method is used for but not limited to the laser wire fusing deposition additive manufacturing technology and can be widely applied to arc wire fusing, plasma arc wire fusing, electronic beam wire fusing and other additive manufacturing technologies.

A method for forming an ultrathin-wall porous metal pipe fitting belongs to the field of powder metallurgy production and includes the steps: firstly, adding monomers and crosslinking agents into organic solvents or deionized water according to the volume ratio of 1-120:1 to prepare pre-mixed liquor with the concentration of 5-50wt%; secondly, mixing metal powder and pore-forming agents with the prepared pre-mixed liquor of a stable gel system, adding dispersing agents accounting for 0.05-5wt% of the mass of metal powder, adjusting pH (potential of hydrogen) and stirring or ball-milling the mixture for 2-10h to prepare suspending slurry with fine flowability; thirdly, adding 0.1-3.5wt% of catalysts and initiating agents, evenly stirring the mixture, filling the mixture into a large-size mould in a complicated shape after vacuum degassing, demoulding after solidifying the mixture for 30s-30min at the temperature of 30-90 DEG C, and drying a blank in vacuum or protective atmosphere; and finally sintering the blank into a pair. The method can be used for preparing the ultrathin-wall porous metal pipe fitting, so that the problem of easiness of breakage in pressure forming is avoided. By adjusting the content and the granularity of the pore-forming agents, the porosity and the pore size of the part are controlled, and the method is simple in process and low in production cost.

The invention relates to a permanent-magnetic-ferrite production method and permanent magnetic ferrite, which belongs to the field of magnets. The invention solves the technical problem that the prior art is low in the utilization value of permanent magnetic ferrite recycled material and incapable of recycling permanent magnetic ferrite recycled material to product high-performance permanent magnetic ferrite. The permanent-magnetic-ferrite production method comprises the steps of preparing material, preparing sizing agents, molding, sintering, grinding and washing. A permanent magnetic ferrite product produced by the method has Br more than or equal to 410 mT, Hcb more than or equal to 290 kA/m, Hcj more than or equal to 306 kA/m and BHmax more than or equal to 31.81 J/m, and the performances of the product meet the performance requirements of FB6B series products. The permanent magnetic ferrite can be used for motors, computers and the like of high-grade automobiles, motorcycles and other motor vehicles, and has broad market and application prospects.

The invention discloses a fixing method of magnetic steel, a rotor assembly and a motor. The fixing method comprises the steps of coating inner wall surfaces of magnetic steel tanks and/or side wall surfaces of magnetic steel with an aerobic adhesive and embedding the magnetic steel into the corresponding magnetic steel tanks; or embedding the magnetic steel into the corresponding magnetic steel tanks and injecting the aerobic adhesive into gaps between the corresponding magnetic steel and magnetic steel tanks; pouring a sealant into two end parts of the magnetic steel, curing the aerobic adhesive to isolate from the outside by the sealant and curing the aerobic adhesive to bond the magnetic steel and the corresponding magnetic steel tanks. The rotor assembly comprises a rotor core, the magnetic steel, the aerobic adhesive and sealing elements, wherein the magnetic steel tanks are formed in the rotor core; the magnetic steel is embedded into the magnetic steel tanks in a manner of one-to-one correspondence; the aerobic adhesive is arranged between the corresponding magnetic steel and magnetic steel tanks to fix the magnetic steel and the magnetic steel tanks; and the sealing elements are arranged on two end parts of the magnetic steel and a closed space for sealing the aerobic adhesive and the magnetic steel is enclosed by the sealing elements and the magnetic steel tanks thereof. The motor comprises the rotor assembly. The sealant on the magnetic steel is cured, so that the inside of each magnetic steel tank is isolated from the outside to form a closed environment; and the curing speed of the aerobic adhesive is increased in the closed environment.

The invention discloses a sprue plugging device for casting a sand mold at low pressure and a method for casting the sand mold at low pressure. A groove is formed in a cast straight sprue part; a plugging piece is put into the groove; a square pouring hole is formed in the plugging piece; a plugging guide hole is formed in the back of a lower sand mold; an oil cylinder is arranged on the outer side of the guide hole; and a piston rod of the oil cylinder extends into the cast guide hole. The plugging method comprises the following steps that when a control system receives a signal indicating that the low-pressure casting is finished, the piston rod of the oil cylinder is controlled to quickly extend and pushes casting sand in a casting mold to forwards move together with the plugging piece along the guide hole; after reaching a certain travel, the oil cylinder stops moving, and the low-pressure casting pressurization system exhausts air and releases pressure; the plugging piece is staggered to separate a straight sprue; the plugged casting mold and a casting which is not completely solidified can move away from a pouring position, and the casting mold is overturned, cooled and solidified; and another casing mold is moved to the pouring position to be poured. The sprue plugging device is mainly used for manufacturing low-pressure cast complete equipment.

A substrate, which has semiconductor die arranged thereon, uses at least one solder flow stop, closely surrounding at least a portion of at least one mounting pad on which the die are mounted, to prevent die rotation during solder reflow. The at least one solder stop is non-wetting, during a solder reflow process, to solder used to mount the die.

The invention provides a manufacturing method of a metal line and an array substrate and the array substrate. The manufacturing method of the metal line comprises the steps that a metal layer is formed on a substrate; an insulating layer is formed on the metal layer; photoresist is coated on the insulating layer; the photoresist is exposed so that a photoresist reserved area and a photoresist unreserved area are formed; development of the photoresist unreserved area is performed; the insulating layer is etched so that the metal layer required to be etched is exposed; and the metal layer is etched, and the part which is not covered by the photoresist reserved area is removed so that the metal line is formed. According to the manufacturing method of the metal line and the array substrate and the array substrate, one insulating layer is formed between the metal layer and the photoresist, and the insulating layer and the metal layer have great adhesiveness so that breaking of the metal line because of warping of the photoresist does not occur when the metal layer is etched, the line width of the metal line can be reduced, breaking of the metal line can be avoided and thus the yield rate of the product can be enhanced.

The invention provides a non-sticky metal surface and a preparation method thereof. The method comprises the following steps: S1, irradiating the clean metal surface by adopting pulse laser, and etching a nano-scale or micron-scale micro-nano structure used for achieving the super-lyophobic characteristic or the lyophobic characteristic on the metal surface; and S2, cleaning and spraying the metal surface of the micro-nano structure ablated with a low-surface-energy coating. According to the non-sticky metal surface and the preparation method thereof, the micro-nano structure is ablated on the metal surface through the pulse laser, the metal surface of the micro-nano structure is sprayed with the low-surface-energy coating, so that the metal surface has the super-lyophobic characteristic or the lyophobic characteristic, the effect of being not sticky to viscous beverages such as milk and yoghourt and dairy products can be achieved, the non-sticky performance is lasting, and the non-sticky metal surface can be reused.

The invention discloses an aluminum gusset plate continuous roller coating device. The aluminum gusset plate continuous roller coating device comprises a feeder, a coating surface cleaner, a positioning roller coating device, a coating surface shaping device and a material collecting device. According to the aluminum gusset plate continuous roller coating device, the roller coating of an aluminumgusset plate can be continuously and automatically carried out, the displacement deformation of the aluminum gusset plate can be effectively prevented, meanwhile, a roller coating surface can be synchronously cleaned, the roller coating effect is further improved, the degree of automation is high, the operation precision is high, the labor cost is greatly saved, and the production efficiency is facilitated to be improved.

Production of SiALONC by silicon oil containing hydrogen and Al powder and its production are disclosed. The SiALONC ceramic consists of silicon oil containing hydrogen 18-55wt%, amino compound 43-70wt%, Al powder 2-22wt%. The production is carried out by: 1) mixing silicon oil containing hydrogen 18-55wt%, amino compound 43-70wt% with Al powder 2-22wt%, agitating under 0-100deg.C for 8-12hrs, and reacting to form Si-Al-O-N-C organic polymer; 2) inducing nitrogen with 0.5-1atmos into organic polymer in heat pressure sintering furnace, pressurizing 15-20Mpa, or inducing nitrogen with 0.5-1atmos into atmospheric pressure furnace under sintering temperature 1600-1750deg.C, keeping temperature for 1-2hrs, and sintering Si-Al-O-N-C ceramic. It achieves low cost and high strength.

Disclosed herein is a laminate for a flexible printed circuit board, which includes a base film, and a tie layer formed of a copper alloy containing a small amount of Zn—V or Zn—Ta disposed on the base film. As such, the tie layer formed of a copper alloy containing Zn—V has a component ratio of Zn in the copper alloy larger than that of V, and preferably, includes more than 2.5% Zn but not more than 5%, and less than 2.5% V. In addition, the tie layer formed of a copper alloy containing Zn—Ta has a component ratio of Zn in the copper alloy larger than that of Ta, and preferably, includes more than 2.5% Zn but not more than 5%, and less than 2.5% Ta.

The invention discloses a composite degradation material of aluminum hydroxide-poly-butylene succinate and a preparation technology thereof, the composite degradation material is made by blending and extruding the materials of aluminum hydroxide and the poly-butylene succinate, etc. and an addition agent; the weight percentage is as follows: 40 to 50 percent of the aluminum hydroxide, 35 to 50 percent of the poly-butylene succinate, 5 to 10 percent of polylactic acid, 5 to 10 percent of starch and1.5 percent of the addition agent. The composite degradation material can reduce the production cost of the degradation materials, improve the performance of products and can be widely applied in fields such as toys, electronics and industrial packaging, etc.

The invention discloses a flux for SnAgCuNiGe alloy solder paste and a preparation method, comprising a polymerized rosin 25% to 30%, a hydrogenated rosin 8% to 16%, a rosin alcohol 6% to 12%, a modified and hydrogenated castor oil 2% to 3%, a hydrogenated castor oil wax 2% to 3%, an organic acid and halogen compound and other active agents 6% to 11%, a hydroquinone and other antioxidant 0.5% to 3%, a surface-active material 2% to 4%, and an organic solvent. The invention is characterized in that: the polymerized rosin, the hydrogenated rosin, the rosin alcohol, the organic solvent, the modified and hydrogenated castor oil, the hydrogenated castor oil wax, the active agent, and the antioxidant are utilized in turn and heated at temperatures of no more than 130 degrees Centigrade, then are sufficiently dissolved, evenly mixed and cooled to ambient temperature, finally the surface-active material is added to the mixture, and the cooling process is kept on for two to three hours, and the flux is obtained. The invention has an advantage of meeting demands of customers to the service life of the solder paste and requirements to the printing performance and welding property for the solder paste.

The invention relates to the field of food processing machinery, in particular to a powder sifter and a silent powder sifter. The powder sifter comprises a powder grinding bin and a powder sifting bin; the powder grinding bin is arranged above the powder sifting bin; before powder is fed into the powder sifting bin for being sifted, the powder is grinded in the powder grinding bin, so that granular powder is regrinded and is then fed into the powder sifting bin for being sifted. The powder sifter solves the problems of incapability of sifting out one part of the powder and screen blockage in the prior art. The invention further provides the silent powder sifter; the silent powder sifter comprises the powder sifter and a vibration reducing support leg; and the vibration reducing support leg absorbs one part of working vibration of the powder sifter. The powder sifter reduces waste of the powder, weakens the working noise, and reduces the damage caused by equipment resonance.