162results about How to "Guaranteed surface finish" patented technology

The invention relates to the technical field of fixtures, in particular to an expansion fixture device. The expansion fixture device is characterized by being composed of a pull rod, flat section bodies, extension springs, a wedge block and a fixture body. A center through hole is formed inside the fixture body, and the pull rod is arranged inside the center through hole. The outer surface of the right side of the fixture body is provided with six evenly-distributed axial long grooves in a milling mode, and the six flat section bodies capable of forming a complete circle are arranged in the axial long grooves. The exterior of each flat section body is provided with a groove, and the extension springs are arranged in the grooves in a sleeved mode. The lower surface of each flat section body is provided with a conical surface. The wedge block is arranged in the center hole of the fixture body, connected with the pull rod through threads and provided with six evenly-distributed inclined grooves which are matched with the conical surfaces of the lower portions of the flat section bodies respectively, and a hexagon screw head is welded to the right end face of the wedge block. The expansion fixture device is simple in structure, and the wedge block is of a complete circle type.

The invention provides a manufacturing method of a carbon fiber composite material rectangular hollow pipe for a mechanical arm, and the obtained rectangular hollow pipe. A carbon fiber composite material serves as a raw material and is carbon fiber prepreg; the prepreg comprises one-way and fabric prepregs and the rectangular hollow pipe is manufactured by a mould pressing inflation forming method. According to the manufacturing method of the carbon fiber composite material rectangular hollow pipe, a rectangular thin-walled hollow pipe is manufactured by performing mould pressing inflation combined forming on the carbon fiber prepreg serving as the raw material. Compared with the prior art, the invention has the advantages that the carbon fiber composite material rectangular hollow pipe has high bearing capacity, high rigidity and light weight; during operation, the arm is more stable in action and moves and stops more quickly; the arm can be quickly positioned by the vibration damping characteristic of the carbon fiber composite material; the carbon fiber composite material is applicable to precision equipment due to the zero thermal expansion coefficient; equipment investment is small; a mould is simple to manufacture; production energy consumption is low; production period is short; automatic production is realized.

The invention provides a steel strip for an LED bracket and a manufacturing method thereof. The steel strip comprises the following chemical compositions by mass percent: 0.03%<=C<=0.07%, 0.01%<=Si<=0.03%, 0.2%<=Mn<=0.3%, 0%<P<0.02%, 0%<S<0.02%, 0.01%<=Al<=0.035% and the balance of Fe, as well as a trace of inevitable impurities. Repeated tests and trials show that the LED steel strip completely satisfies the quality requirements on the strength, the rigidity and the extensibility, which ensure that the LED bracket is free from cracks after being punched and bent for 6 times, and at present, the LED steel strip gains popularity of customers; and as the LED new material cold-rolled strip has a very wide development prospect, the popularization and application values are extremely high and the prospect is very wide.

A composite FeNi alloy/Cu wire 4J50/Cu is made of the copper rod cored FeNI alloy ingot through vacuum high-temp treating, squeezing at 900-950 deg.C, cold drawing and heat treating. Its advantages are high electric and thermal conductivities, better weldability, and good sealing performance to glass and ceramics.

The invention discloses water-soluble and oil-soluble diamond grinding liquid, and belongs to the field of precise finishing and polishing processing. The liquid is prepared by the following raw materials in percentages by weight: 54-87% of base oil, 5-15% of an emulsifier, 5-10% of a co-emulsifier, 0.1-1% of an anti-aging agent of oil products, 0.05-5% of a diamond abrasive, and the balance being water. The invention also discloses a preparation method of the water-soluble and oil-soluble diamond grinding liquid, and the method comprises the following steps: (1) the base oil, the emulsifier, the co-emulsifier and the anti-aging agent of oil products are mixed and poured into a reaction vessel, and heating is carried out with stirring at 70 DEG C for 10-20 minutes; (2) the diamond abrasive is added into water and placed in supersonic wave with stirring for 10 minutes, and mixed liquor is obtained; (3) the mixed liquor with dispersed diamond abrasive is slowly added into a reaction vessel, temperature is raised to 70 DEG C with stirring for 30 minutes, temperature is reduced to room temperature with stirring, and the water-soluble and oil-soluble diamond grinding liquid is obtained.

The invention provides semi-processed non-oriented silicon steel. The silicon steel comprises following chemical components by mass: not more than 0.005% and not less than 0 of C, not more than 0.8% and not less than 0.15% of Si, not more than 0.4% and not less than 0.2% of Mn, more than 0.02% and less than 0.1% of P, more than 0% and less than 0.01% of S and not more than 0.1% and not less than 0.03% of Al, with the balance being Fe. The thickness of the silicon steel is 0.35-0.65 mm, the width is 1000-1250 mm, and the surface roughness Ra is 0.4-1.0 [mu]m. Through a plurality of tests and trials, the silicon steel fully meets quality requirements on iron loss and magnetic induction for motors. After secondary annealing and blueing, the performance can be improved by two levels. The silicon steel is favored by users at present. As the development prospect of the motor industry is wide, the silicon steel is high in popularization and application value and has a wide prospect.

A production method of a Zn/Cu-Ag/Cu-Au composite coating steel band for a photoelectric material comprises the following steps: using a 08Al cold-rolled steel sheet as a raw material and carrying out cold rolling; after conventional degreasing, carrying out uncoiling, splitting and deburring; hot-dipping Zn; thermally spraying Cu-Ag; carrying out primary annealing at a pure nitrogen protective atmosphere; thermally spraying Cu-Au; carrying out secondary annealing at a pure nitrogen protective atmosphere; and air-cooling to a room temperature and coiling. The tensile strength is 250-300MPa, and the elongation percent is 42-48%. One Zn/Cu-Ag/Cu-Au composite coating is generated on the surface. After the Zn/Cu-Ag/Cu-Au composite coating steel band is placed under an indoor conventional atmospheric condition for 960 days, the gloss loss rate of the coating is not larger than 0.3%, and the surface corroded area is not larger than 0.3%. The product has excellent electricity and heat conductivity. After the Zn/Cu-Ag/Cu-Au composite coating steel band is kept at 300-350 DEG C for 960 days, the surface oxidized area is not larger than 0.2%, and the hardness variation rate is not larger than 0.2%. The product also has excellent welding and machining performance.

The invention aims to provide packing powder for sintering a ceramic core. The packing powder is characterized by being formed by mixing fine particle powder and ceramic balls, wherein the mass ratio of the fine particle powder to the ceramic balls ranges from (3:1) to (10:1). The packing powder has certain de-waxing capability in a biscuit de-waxing phase, has high supporting capability in a sintering process and guarantees that the finished product ceramic core has no gravity deformation and has certain surface smoothness; the yield in a production process of the ceramic core can be improved.

The invention relates to a silicon steel furnace bottom roller sleeve and a preparation method thereof. The technical scheme of the invention is as follows: 2-10wt% of dense carbon material large particles, 2-10wt% of dense carbon material small particles, 80-95wt% of dense carbon material fine powder and 0.3-2.0wt% of Si micro powder are mixed together and are then ground for 20 to 30 minutes with the addition of 8-20wt% of bonding agent of the above materials; a silicon steel furnace bottom roller sleeve blank is manufactured after the mixed grinding and is baked for 4 to 8 hours after heat preservation under the temperature of 1,400 to 1,450 DEG C; then the silicon steel furnace bottom roller sleeve blank is placed in a pressure vessel and is maintained for 15 to 30 minutes under the pressure of 10,000 to 20,000Pa, tar is filled until the sleeve blank is completely soaked, and then the sleeve blank is pumped to the vacuum degree of 10,000 to 20,000Pa and is maintained for 15 to 30 minutes; finally, the sleeve blank is heat-preserved for 8 to 12 hours under the high temperature of 1,950 to 2,150 DEG C and is processed by machinery until the surface roughness is smaller than or equal to 12.5. The durable silicon steel furnace bottom roller sleeve has the characteristics of long service life, good oxidation resisting performance, high strength, good wear-resisting property, low porosity, no accretion and high quality of silicon steel plates.

The invention discloses a glass forming mold. The glass forming mold comprises a formed mold and a mold base matched with the bottom part of the formed mold, wherein the formed mold is provided with a bottle body forming cavity; a bottle bottom forming cavity is arranged on the mold base; the formed mold is provided with a cooling channel which penetrates through the bottom part of the mold base to the side wall of the formed mold and extends to the middle part of the formed mold to be communicated with the outside. The temperature of the upper part of the formed mold is higher during forming to guarantee the surface smoothness of a glass product; the temperature of the lower part of the formed mold is lower to be beneficial for the forming of the bottom part of the glass product and to prevent depressing.

The invention relates to a functionally-graded diamond-like carbon film as well as a preparation method and a product of the functionally-graded diamond-like carbon film. The preparation method of the functionally-graded diamond-like carbon film comprises the following steps: (1) depositing a metal base layer on the surface of a work piece by virtue of hollow cathode electron beams secondarily combined with pulsed-bias multi-arc ion plating; (2) depositing a metal nitride transition layer on the surface of the metal base layer by virtue of hollow cathode electron beams accompanied with pulsed-bias multi-arc ion plating; (3) depositing a tungsten carbide gradient layer on the surface of the metal nitride transition layer by virtue of pulsed-bias multi-arc ion plating accompanied with magnetron sputtering; (4) depositing a diamond-like carbon decorative layer on the surface of the tungsten carbide gradient layer by virtue of pulsed-bias multi-arc ion plating accompanied with magnetron sputtering. The functionally-graded diamond-like carbon film prepared by the preparation method provided by the invention has the advantages of high glossiness, high interface bonding strength and high surface hardness and is also excellent in wear resistance, corrosion resistance and scratching resistance.

The invention discloses a moulding milling cutter. A cutter body is in a circular truncated cone shape; four inclined planes are evenly distributed at the outer edge of the end surface of one end part of the cutter body; a cutting tool is respectively fixed on concave platforms of the four inclined planes; the cutting edge of the cutting tool is in an arc shape matched with a cut arc shape of a cut workpiece; both ends of the cutting edge of the cutting tool respectively form an angle gamma (gamma is not greater than 15 degrees) with the tangent lines of two end circular arcs; the front end surface of the cutting edge of the cutting tool and a radial shaft of the end surface of the cutter body form an angle alpha (alpha is equal to 5-8 degrees); the middle part of the cutter body is provided with a penetrated counter bore; and a cutter shaft assorted with a machine tool is arranged in the counter bore. The invention ensures the processing precision and the surface finishment; the cutter body is in a counter bore structure of which the middle part is penetrated, can be clamped with a milling machine through the cutter shaft and is convenient to clamp; the arc processing of the workpiece can be completely finished by the milling machine of the milling cutter without manual operation, thereby shortening the processing time of the workpiece and improving the production efficiency.

The invention provides a hydraulic support oil cylinder refabrication method based on CMT and belongs to the technical field of metal surface engineering. The hydraulic support oil cylinder refabrication method comprises the steps that mechanical machining and cleaning are firstly performed on the oil cylinder inner wall to be repaired in sequence, then CMT welding is performed on the hydraulic support oil cylinder inner wall, finally, the mechanical machining is performed on a CMT weld layer, and a refabricated hydraulic support oil cylinder is obtained. According to the hydraulic support oilcylinder refabrication method based on the CMT, the cold metal transition welding technology is utilized to weld the hydraulic support oil cylinder inner wall, heat input and spatter are less in thewelding peocess, the fact that the refabricated oil cylinder will not lose efficacy due to heat deformation can be guaranteed, and the service life of the oil cylinder is prolonged; by means of the manner that the mechanical machining is performed on the oil cylinder inner wall before and after the welding, the surface smoothness, the size and the tolerance of the oil cylinder all can be guaranteed to meet the drawing requirements; and meanwhile, the refabrication method provided by the invention is low in cost and high in efficiency, and full-automatic production can be realized.

The invention provides a ceramic stacked abrasive material. Hollow microspheres are mainly taken as the base body, and the surfaces of the hollow microspheres are evenly wrapped in a fugitive binder and a micro powder-level abrasive material and ceramic bond powder which adhere to the fugitive binder; then calcination is conducted to form the hollow spherical ceramic stacked abrasive material. The invention further provides a method for preparing the ceramic stacked abrasive material and a grinding tool using the ceramic stacked abrasive material. By the adoption of the ceramic stacked abrasive material, the thickness of a working layer of the grinding tool can be made large, so that the durability of the grinding tool is improved greatly; furthermore, large gaps exist between particles during grinding and polishing, so that blocking is effectively prevented and grinding efficiency is improved, high flatness of the surface of the working layer can be guaranteed, and surface smoothness can be guaranteed during grinding and polishing. The grinding tool also has the properties of resin binders, so that the sharpness and durability of the grinding tool are improved.

The invention relates to a sapphire infrared window cleaning agent and a preparation method. The sapphire infrared window cleaning agent is characterized by comprising 1472-1840 parts by weight of concentrated sulfuric acid, 300-500 parts by weight of potassium dichromate and 4000-5500 parts by weight of water. When used to clean a sapphire window, the cleaning agent is non-corrosive on human body at normal temperature because the cleaning agent is not volatile easily, thus the cleaning agent has safe and convenient use without corroding and damaging polishing surfaces in the cleaning process and can ensure that the surface quality and the surface finish quality of the sapphire infrared window are not damaged.

The invention relates to the field of machining, and particularly relates to a shaft mold surface flaw detection repairing device and a using method. The shaft mold surface flaw detection repairing device comprises a base and a supporting table, and further comprises a controller, a rotating mechanism, a repairing mechanism and a lifting mechanism, wherein the rotating mechanism comprises a driving assembly and two pneumatic claws; the lifting mechanism comprises a lifting plate and a jacking assembly; the repairing mechanism comprises an ultrasonic probe, a polishing assembly and a filling assembly; a camera is mounted at the end, close to the bottom of the supporting table, of a rotating plate; and the camera, the ultrasonic probe, the driving assembly, the jacking assembly, the polishing assembly, the filling assembly and the two pneumatic claws are all electrically connected with the controller. According to the shaft mold surface flaw detection repairing device and the using method, burrs can be removed, cracks and pits can be filled at the same time, manual intervention is not needed in the repairing process, and the repairing efficiency and yield can be improved.

The invention relates to a numerical-control machine tool capable of realizing non-rotary curved-surface turning and milling combined machining. The numerical-control machine tool comprises a machinetool bed, a suspension wall column, a cross sliding table workbench, a double-shaft rotary workbench, a turning machine head, a milling machine head, a turning tool magazine and a milling tool magazine, wherein the suspension wall column is of an inverted L-shaped structure composed of a cantilever end and an upright post end, and the upright post end is fixed on the machine tool bed; the cross sliding table workbench is mounted on the machine tool bed, and the double-shaft rotary workbench is mounted on the cross sliding table workbench and can perform reciprocating feeding along the X-axis and the Y-axis under the action of an X-axis driving system and a Y-axis driving system along with the cross sliding table workbench; the turning machine head and the milling machine head are arrangedon the front end face of the cantilever end side by side, and can reciprocate up and down along the Z axis respectively; and the turning tool magazine and the milling tool magazine are respectively arranged on the left side and the right side of the suspension wall column corresponding to the turning machine head and the milling machine head. The numerical-control machine tool is simple in structure and high in response speed, and five-axis curved surface turning and five-axis linkage milling machining can be achieved.