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315results about How to "Not easy to cut" patented technology

Drying and sorting integrated crusher and process

The invention discloses a drying and sorting integrated crusher and a process thereof. The crusher comprises a crushing device, an air blast device, a sorting device and a drying preheating device. Ores are preheated by the drying preheating device and are crushed by the crushing device, and dust formed after the ores are crushed by the crushing device is raised by air which is blown by the air blast device into the sorting device; and a finished product is obtained by the settlement of the dust in the sorting device. According to the drying and sorting integrated crusher, the crushing device comprises a spindle, a crushing disc and 3 to 8 grinding rollers; the spindle is vertical; the crushing disc is horizontal; the grinding rollers are erected on the crushing disc and are meshed with the inner wall of a crushing cavity; and the adjacent grinding rollers are meshed with each other. When the crushing device runs, the grinding rollers revolve on the own axis while rotating around the spindle. The crushing device has a high-efficiency crushing effect on low-hardness ores, and is particularly suitable for crushing asbestos ores. When the drying and sorting integrated crusher is applied to the asbestos ores, the process can be simplified, investment of equipment and capital construction can be reduced, energy consumption and cost can be reduced, and the production efficiency can be improved greatly.
Owner:NANJING EFFUL

Thrombus extraction stent and thrombus extraction device

The invention relates to the technical field of medical apparatuses for internal medicine, and in particular to a thrombus extraction stent and a thrombus extraction device. The thrombus extraction stent comprises a stent main body which achieves self-expanding in a circumferential direction of a longitudinal axis, wherein the stent main body comprises a distal portion, a middle portion and a proximal portion connected to a push rod, and the distal portion, the middle portion and the proximal portion are sequentially connected; the distal portion comprises first closed-loop net units; the plurality of first closed-loop net units are mutually connected, so that a sleeve structure is defined; the middle portion comprises a plurality of second closed-loop net units; the plurality of second closed-loop net units are mutually connected, so that a sleeve structure is defined; the proximal portion comprises a plurality of third closed-loop net units; the plurality of third closed-loop net units are mutually connected, so that a taper-tube structure is defined; and both the first closed-loop net units and the third closed-loop net units are less than the second closed-loop net units in meshes. The invention also provides the thrombus extraction device. Due to small-mesh design of the distal portion and the proximal portion, thrombus displacement and falling-off are prevented from easily occurring in a withdrawal process. With large-mesh design of the middle portion, a thrombus can be conveniently taken out as a whole body.
Owner:XINKAINUO MEDICAL TECH SHANGHAI CO LTD

High-strength reinforcing steel bar with spiral fins and processing method of high-strength reinforcing steel bar

The invention relates to a reinforcing steel bar and a processing method thereof, in particular to a high-strength reinforcing steel bar with spiral fins and a processing method of the high-strength reinforcing steel bar. The high-strength reinforcing steel bar consists of following components including, in weight percentage, from 0.25 to 0.4% of C, from 0.1 to 0.2% of Si, from 0.3 to 0.45% of Mn, from 0.04 to 0.05% of Nb, from 0.08 to 0.09% of Cr, from 0.01 to 0.04% of V, from 0.002 to 0.003% of B, from 0.001 to 0.003% of Mo, from 0.015 to 0.03 of Al, from 0.002 to 0.003% of S, from 0.008 to0.009% of Ti, from 0.004 to 0.005% of Ni, from 3 to 5% of composite rear earth and the balance Fe. The processing method includes using a roll to roll a reinforcing steel bar into a reinforcing steelbar with the continuous spiral fins on the surface in a hot state; feeding the reinforcing steel bar with the continuous spiral fins on the surface after hot rolling into a heating furnace and heating the reinforcing steel bar to the temperature of 880-990 DEG C; then fast cooling the reinforcing steel bar to the temperature of 650-680 DEG C by an online cooling device via compressed air or vaporous quenching liquid; quenching in a quenching device by water or quenching liquid for 15-25 seconds; and tempering after heating the reinforcing steel bar to the temperature of 500-550 DEG C via a tempering heating furnace. The high-strength reinforcing steel bar with the spiral fins has a good anchoring property, fine ductility and a high yielding-to-tensile ratio.
Owner:TIANSHUN GROUP +2

Glass fiber bobbin rest yarn removing device and control method thereof

ActiveCN105401315AGood yarn cutting effectHigh cutting efficiencyAuxillary apparatusYarnBobbin
A glass fiber bobbin rest yarn removing device includes a bobbin delivery part, a bobbin rotation positioning part, and a glass fiber cutting part; the bobbin delivery part includes a synchronous gear-shaped belt which is provided with bobbins with grooves, and the bobbin rotation positioning part is arranged above the bobbins; the bobbin rotation positioning part includes a rotary cylinder and a bobbin clamping rack, the glass fiber cutting part is arranged at one side of the bobbins, the glass fiber cutting part includes a cutting blade, a bobbin position detecting sensor with a detecting probe is arranged at the other side of the bobbins, and the detecting probe contacts the bobbins. When the glass fiber bobbin rest yarn removing device is controlled to remove rest yarns by a control method, the synchronous gear-shaped belt is firstly controlled to move until the bobbins move to the position under the bobbin clamping rack, then the rotary cylinder is controlled to allow the bobbins to axially rotate, and then the cutting blade is controlled to move up and down along the grooves at the other side of the bobbins to cut the rest yarns in the bobbins when the detecting probe extends into the grooves at one side of the bobbins. The glass fiber bobbin rest yarn removing device is good in yarn-cutting effect, is high in yarn-cutting efficiency, and cannot cut the bobbins.
Owner:WUHAN TEXTILE UNIV

Metallic bond, diamond grinding wheel prepared through bond and preparation method of diamond grinding wheel

The invention relates to a metallic bond, a diamond grinding wheel prepared through the bond and a preparation method of the diamond grinding wheel. The metallic bond comprises, by weight percent, 95%-99% of copper-tin prealloyed powder, 0.5%-3% of graphite powder and 0.5%-2% of nanometer alpha-Al2O3. The copper-tin prealloyed powder, the graphite powder, the nanometer alpha-Al2O3 and diamond are taken according to a certain proportion, procedures of burdening and material mixing, pelletizing, compression, sintering and aftertreatment are carried out in sequence, and tool bits can be prepared. The multiple tool bits are arranged on a matrix at equal distance in the circumferential direction, the cambered surfaces of the tool bits are perpendicular to the matrix, and the diamond grinding wheel is prepared. The above tool bits are uniform in ingredient and good in density, diamond distribution is uniform, and the control effect of the metallic bond on the diamond is good. The grinding wheel has the beneficial effects of being good in ground workpiece surface quality, free of dark cracks and scratches, sharp in grinding and long in service life, facilitating large-scale production and the like and is especially suitable for producing sapphire wafers with the thinning thickness ranging from 100 micrometers to 700 micrometers.
Owner:BEIJING GANG YAN DIAMOND PROD CO +1

Measuring method of magnetic resistivity of substance under the condition of high voltage

The invention relates to a measuring method of the magnetic resistivity of a substance under the condition of high voltage, belonging to the technical field of measurement of physical quantities. The magnetic resistivity of the substance is measured on diamond anvil cells of a metal film electrode (13) on the basis of the van der pauw resistance measurement method according to the following test steps of: assembling equipment; regulating a magnetic field; carrying out the in-site measurement of magnetic field strength; measuring the magnetic resistivity; and the like. The metal film electrode (13) is deposited on one the used diamond anvil cells; a pressing machine (5) and a spacer (4) are both made of nonmagnetic materials; and only a shaking table (2) is made of steel materials. The invention mainly obtains the technical effect of accurately measuring the magnetoresistance effect of a sample under the condition of the high voltage, establishes a nonmagnetic measurement environment, provides a uniform magnetic field on space for the sample, eliminates the influences of lead resistance and contact resistance and carries out the in-site measurement on the magnetic field strength inside a cavity of the sample; and in addition, the used metal electrode (13) can bear high pressure without being cut easily.
Owner:JILIN UNIV
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