Double metal combined guiding and guarding board and its making process

Rotary piston engine

The invention discloses a rotary piston engine, pertaining to the technical field of internal combustion engines. The rotary piston engine comprises a dual rotary piston mechanism, wherein, a compressing power shaft and a power output shaft which are respectively arranged in a compressing cylinder and a power cylinder are both provided with an eccentric wheel rotary piston, the compressing cylinder is communicated with an air inlet which is provided with a sealing type sliding block, the compressing cylinder is communicated with a compressed air passage, and the compressed air passage is communicated with the power cylinder by a rotary valve; the power cylinder is provided with an igniter and a sealed sliding block as well as an exhaust port; and a synchronous mechanical transmission mechanism is arranged between the compressing power shaft and the power output shaft. Compared with the existing four-stroke engine, the rotary piston engine has the positive effects and significant advantages ...

Method of producing the copper alloy contact wire

The invention provides copper alloy contact lines and a preparation method thereof. The method includes the following steps: (1) preparing Cu-Al master alloy powders, in which the content of Al is 0.21-0.53wt%, and the balance is copper; (2) using the Cu-Al master alloy powders obtained from step (1) to prepare an oxygen source of Al2O3-Cu2O, in which the weight ratio of Cu and AI keeps unchanged; (3) mixing the Cu-Al master alloy powders obtained from step (1) and the oxygen source of Al2O3-Cu2O obtained in step(2), wherein, the weight ratio of the oxygen source of Al2O3-Cu2O in the mixture is 10-25wt%; (4) carrying out internal oxidation and reduction treatment for the mixture obtained in step (3), so as to obtain alloy powders of Cu-Al2O3, in which the content of Al2O3 is 0.4-1.0wt%; (5) suppressing the alloy powders of Cu-Al2O3 obtained in step (4) into billets and then carrying out sintering treatment; (6) molding the suppressed and sintered billets obtained in step (5) into bars; ...

Three-dimensional picture module

The invention discloses a three-dimensional picture module comprising a rectangular bottom plate and a plurality of four-surface cone-shaped bodies connected on the bottom plate; the cone bottom of each cone-shaped body is successively connected to form a plurality of continuous drawing slopes on two sides; and a plurality of continuous fluctuant drawing slopes are formed between two ends. Three-dimensional pictures are formed by drawing on the three-dimensional picture module of the invention. The three-dimensional picture uses the parablepsia principle to create various novel artistic interests. The three-dimensional picture can be exhibited in public places and can serve as an ornament to decorate rooms in a home.

Two stroke engine with rotary chamber

One kind of swivelling combustion chamber two-cycle engine, belonged to the reciprocation piston is the internal combustion engine area of technology has provided one kind compared to the volume and compared to the quality small, the structure was compact, takes a breath the consummation swivelling combustion chamber, surrounded the cylindrical rotor in the cylinder cover week circle separately to arrange a little the firearm, the fuel injection nozzle, the compressed air import, the waste gas overflows the exportation and connects the mouth with the air cylinder, the rotor, between the axis and the crank supposes the synchro drive installment, between the piston and the connecting rod is equipped with the power unit. In the same level oil consumption, in the output same level power situation, reduces compared to four travelling schedules engines number of cylinders one half, compared to volume and compared to quality small, the structure is compact. But concurrently uses the many kinds ...

SUGARCOATED HAWS WITH PACKING SHEET

Present invention provides sugarcoated haws packed with paper and plastic paper to protect the sugarcoated haws from pollution and break.

Medicament unpacking box

The invention discloses a medicament unpacking box, comprising a box body, wherein the box body comprises a front wall, a side wall and a rotatablely opened top cover and is internally provided with an ultraviolet lamp; the front wall is provided with two hand holes and hole covers matched with the hand holes; a fixed baffle plate is arranged on the upper part and the lower part inside the box body respectively; multiple pairs elongated baffle plate holes are correspondingly arranged on two side walls in the middle of the box body; the baffle plate holes are arranged at intervals from top to bottom; each pair of baffle plate holes can be provided with a movable baffle plate; the fixed baffle plates and the movable baffle plates are vertical to the front wall; and the front ends of the fixed and movable baffle plates are a certain distance away from the front wall. In order to reduce the light refraction and radiation functions of the top cover, the top cover or the rotatable part of the ...

SEPARATEDLY PACKED SOFT DRINK

Self-compacting mortar working performance tester and test method

The invention relates to a measuring instrument and a measuring method, in particular to a testing instrument of self-compaction sand pulp workability and a measuring method. In order to measure the workability of the self-compaction sand pulp, the invention proposes an experimental method of 'ball sinking', and the mass of the 'ball sinking' and the size of a sand pulp vessel are optimized by an experiment. By comparatively analyzing time course curves of 25.9g of steel ball sinking in fresh sand pulp with different self-compaction abilities, the invention finds that the time duration of the curves can reflect the fluidness of the sand pulp, the change of slope factors of the curves can reflect the uniformity of the sand pulp and the integral area of the curves can comprehensively reflect the self-compaction abilities of the sand pulp. The operation of the measuring instrument and the measuring method of the invention is simple, and the measuring result is accurate, thus sensitively reflecting ...

Sintering flue gas desulfurization combined coking coal gas deamination cycling system

The present invention relates to a sintering flue gas desulfurization combined coking coal gas deamination circulation cycling technology, which comprises the following steps: (1) removing sulfur dioxide in the sintering flue gas using ammonium sulfite solution as desulfurization agent to generate ammonium bisulfite solution; (2) remove ammonia in the coking coal gas using the ammonium bisulfite solutionobtained in the step (1) as deamination agent to obtain ammonium sulfite solution, using part of the ammonium sulfite solution as desulfurization agent in step (2), and oxidizing other ammonium sulfite solution into ammonium sulfate solution; (3) evaporating the ammonium sulfate solution, crystallizing, separating and drying to obtain the ammonium sulfate product. A sintering flue gas desulfurization combined coking coal gas deamination cycling system comprise a sintering flue gas desulfurization system, a coking coal gas deamination system and a ammonium sulfate preparation system. The ...

Preparing method for non-online solid solution of copper alloy slab band

The present invention discloses a preparing method for non-online solid solution of copper alloy slab band, wherein the constituents of the copper alloy comprises 0.4-1.1wt% of Cr, less than or identical to 0.1% of Fe, less than or identical to 0.05% of Ni, and the rest is Cu. The preparing process comprises: 1, thermal deformation of copper alloy; 2, treatment of solid solution; 3, secondary thermal deformation; 4, cold rolling deformation; 5, ageing treatment; and 6, precision rolling to obtain products. The present invention has the advantages that the production is low, and the method is suitable for medium and small batch production; the fit of hardness and electric conductivity is good; blanks before the solid solution treatment of alloy are shorter and thicker than the blanks before the solid solution treatment of traditional process, so the solid solution treatment is operated easily; after a secondary forging, water is cold, the alloy element Cr is dissolved into copper matrix ...

Copper alloy contact wire and method of producing the same

Sealed structure of rolling piston compressor or engine

The invention provides a sealed structure of a rolling piston compressor or an engine, and relates to the technical field of rolling piston compressors and engines. The sealed structure comprises a cylinder body and a slide block. A power main shaft is provided with a sliding eccentric wheel, and the outside of the sliding eccentric wheel is provided with a rolling sleeve. The sealed structure ismainly characterized in that the sliding eccentric wheel is provided with a radial chute, and the radial chute and sliding surfaces on two sides of the power main shaft are in radial sliding fit; anda clearance is formed between the power main shaft and the top of the radial chute, and the sealed structure is provided with an oil guide structure for connecting the clearance and a hydraulic device. The sealed structure overcomes the defects of the prior art, has the characteristics of unique principle, compact structure and good sealing performance, can greatly increase the efficiency of the compressor ...

Medium temperature solid oxide fuel cell anode material and preparation method thereof

The invention discloses a medium temperature solid oxide fuel cell anode material and a preparation method thereof, and belongs to the field of chemical power source solid oxide fuel cell materials. The anode material has a molecular formula of (Pr1-xSrx)2O2SO4-delta. The preparation method comprises the following steps of: dissolving Pr nitrate and Sr nitrate in a stoichiometric ratio in deionized water to prepare precursor solution; adding sodium dodecyl sulfate (SDS) into the precursor solution to form a mixture serving as a sulfur source and adjusting the pH to be 11 by using ammonia water; heating the solution for 1 hour at the constant temperature of 40 DEG C; heating to 50 DEG C and heating for 10 hours with stirring at the constant temperature; washing and performing suction filtration on reaction solution by using distilled water; performing vacuum drying at the temperature of 80 DEG C; obtaining a precursor by grinding; calcining the precursor for 5 hours at the temperature of ...

一种耐磨复合材料的生产工艺

The production process for forming high-alloy wear-resisting layer composite material on the surface of carbon steel or alloy steel includes the following steps: firstly, selecting and using 40-80 % of alloy powder which is formed from Cr, Mo, W, V, Ti, Ni, Co, Mn, B and C and whose grain size is 0.005-0.8 mm or selecting and using sintered hard alloy granules whose grain size is 0.4-0.8 mm and 20-60 % of nichrome alloy powder whose grain size is 0.05-0.1 mm, mixing adhesive and alloy powder and stirring them to obtain the alloy powder coating material, then applying the alloy powder coating material on the side surface of casting mould, and third step pouring and forming to form alloy layer with compact structure, and the combination of alloy layer and self-body is good.

Ultra-high tension copper wire and method of producing the same

The invention provides copper wires with super high tension and a preparation method thereof, wherein, the method includes the following steps: (1) preparing Cu-AI master alloy bars with the AI content of 0.1-0.63wt%; (2) carrying out cold rolling treatment for the Cu-AI master alloy bars; (3) drawing the Cu-AI master alloy bars to obtain Cu-Ai alloy wires with a stated diameter; (4) carrying out internal oxidation treatment for the Cu-AI alloy wires to obtain alloy wires of Cu-Al2O3 with the basic content of Al2O3 as 0.2-1.2wt%; (5) drawing the alloy wires of Cu-Al2O3 to obtain the copper wires with super high tension having a required diameter. The copper wires with super high tension prepared by the method have good conductivity as well as high tensile strength and softening temperature. Thus the copper wires are applicable for advanced digital communications devices, high fidelity wires and voice coils, and water cooling copper wires or connectors used in ultra-high magnetic fields.

A lead-free brazing filler metal with high-strength,high-toughness and nickel-contained SnAgCuRE and a preparation method thereof

Sintering flue gas desulfurization combined coking coal gas deamination cycling technology and cycling system

The invention relates to a sintering flue gas desulfurization combined coking coal gas deamination circulation cycling technology, which comprises the following steps: (1) removing sulfur dioxide in the sintering flue gas using ammonium sulfite solution as desulfurization agent to generate ammonium bisulfite solution; (2) remove ammonia in the coking coal gas using the ammonium bisulfite solution obtained in the step (1) as deamination agent to obtain ammonium sulfite solution, using part of the ammonium sulfite solution as desulfurization agent in step (2), and oxidizing other ammonium sulfite solution into ammonium sulfate solution; (3) evaporating the ammonium sulfate solution, crystallizing, separating and drying to obtain the ammonium sulfate product. A sintering flue gas desulfurization combined coking coal gas deamination cycling system comprise a sintering flue gas desulfurization system, a coking coal gas deamination system and a ammonium sulfate preparation system. The invention ...

Two-stroke engine with rotor combustion chamber

Ultra-high tension copper wire and method of producing the same

Dust pretreatment method and device for improving dust collector efficiency

The invention discloses a dust pretreatment method and a device for improving the efficiency of a dust collector. The method of the invention includes that the dust in a flue of the inlet of an electric dust collector is charged with positive electricity and negative electricity by a charging area and mandatorily mixed in a mandatory mixing area to ensure that fine particles and coarse particles are attracted and attached with each other to form large particles, thus improving the dust collection efficiency of the dust collector. The device of the invention is provided with a shell body which is provided with the charging area and the mandatory mixing area in the front and at the back respectively; a plurality of positive electrodes, negative electrodes and earth electrodes arrayed in sequence are arranged in the charging area in parallel while an interception body is arranged in the mandatory mixing area. The device of the invention has simple structure, smaller volume, obvious effects ...

Composite roller for high vanadium high speed steel and its production process

The invention offers the high V super-speed steel complex roller and its producing craft. The roller includes roller heart and roller shell, the roller heart uses low metal alloy steel or middle carbon steel to produce, the shell uses high V super-speed steel, whose main element is : C: 1.8--3.5A%, V: 7--12%, Cr: 4--5%, Mo: 2--4%, Ni: 0.5--1.5%, other is Fe. The producing craft is: melt and cast the heart and shell by responding heat way. The roller in the invention has good whet feature, high rate of feature and price, using safely. Fine roller, high strength of combination, no crush in use; it can reduce the stop times. It efficiently increase the roller tenacity and whet feature, solve the problems in the heart leaving foundry, and solve the problems of complicated craft and high cost.

Portable charger

Desk organizer