57results about How to "Guaranteed expansion effect" patented technology

The invention discloses a high fluidization micro expansive high-strength grouting material which comprises the following raw materials by mass percentage: 23-34% of cement, 3-5% of microbead, 5-7.5% of phosphorus slag composite powder, 2.5-3.5% of silica fume, 2.5-3.5% of quartz powder, 46-55% of fine aggregate, 0.7-1% of water reducer, 0.01-0.03% of defoaming agent, 2.5-3.5% of expanding agent and 0.5-1% of early strength agent. The grouting material has the advantages of high strength in the early stage and later stage, good flowing property and adjustable expansiveness by taking the cement as a major binding material and employing the silica fume, the microbead and the phosphorus slag composite powder with different hydration activities together with a chemical additive matched with a binding material system and an aggregate system with reasonable gradation, and is particularly applicable to high precision equipment mounting, secondary grouting of an equipment foundation, bolt anchoring, crack repairing, duct grouting and the like.

The present invention discloses a low shrinkage anti-cracking C60 grade self-compacting bridge tower concrete based on internal curing, shrinkage compensating and toughening, wherein the low shrinkage anti-cracking C60 grade self-compacting bridge tower concrete is prepared from the following raw materials: cement, fly ash, mine powder, an expander, an AN-ICA internal curing agent, crushed stone, river sand, polyacrylonitrile fibers, micro-scale modified degreasing cotton cellulose, a cement slurry microstructure regulation agent, water and an ultra-dispersed water-reducing and shrinkage-reducing superplastic admixture. According to the present invention, the initial slump is more than or equal to 230 mm, the expansion degree is more than or equal to 630 mm, the 28 d compressive strength is more than or equal to 70 MPa, the 28 d splitting tensile strength is more than or equal to 5.8 MPa, the toughness index I5 is more than or equal to 3.0, the 28 d self-shrinkage is less than 100*10<-6>, the 28 d dry shrinkage rate is less than 150*10<-6>, the carbonization grade achieves T-IV, the anti-cracking grade achieves L-V, the product has characteristics of excellent mechanical property, excellent cracking resistance and excellent durability, and the difficult problems of high cement and cementing material material consumption, large shrinkage and easy cracking of the bridge tower concrete at the current stage can be solved.

The invention belongs to the technical field of a chemical reagent for oil production, and discloses a viscosity-increasable profile control agent and a preparation method thereof. The profile control agent is obtained through adding functional monomers, inorganic nanometer particles, main crosslinking agents and auxiliary crosslinking agents into an acrylamide monomer water solution, introducing nitrogen gas to remove dissolved oxygen and adding initiators under the water bath condition of 40 to 60 DEG C for polymerization; after the polymerization is completed, pelleting, drying and crushing are performed; a final product is obtained. The prepared profile control agent can realize the continuous viscosity increase on formation water to achieve a certain displacement effect; meanwhile, good anti-salt performance is realized; the water absorption swelling can be generated in the high-concentration salt brine; after the expansion, high intensity is still realized, so that the high seepage layer in an oil deposit can be effectively sealed and plugged; the profile control effect is achieved.

The invention discloses a telescopic satellite antenna. The telescopic satellite antenna comprises a multi-segment antenna body, an expansion mechanism used for expanding the multi-segment antenna body, a compaction releasing mechanism used for locking the multi-segment antenna body before expansion and unlocking and releasing the multi-segment antenna body during expansion action, and a locking mechanism used for carrying out position locking of the multi-segment antenna body after expansion. The telescopic satellite antenna is advantaged in that the structure is compact, and reliable expansion is realized.

The invention discloses a modified calcium sulfoaluminate-calcium oxide concrete expansion agent and a preparation method therefor and belongs to the technical field of production of compound concreteexpansion agents. The modified calcium sulfoaluminate-calcium oxide concrete expansion agent specifically comprises a calcium sulfoaluminate-calcium oxide expansion clinker and a modifier which are in a weight-ratio addition level of (80 to 90): (10 to 20), wherein the modifier is prepared from the following ingredients in parts by weight: 30-40 parts of sodium silicate, 10-15 parts of silane coupler, 10-15 parts of carboxymethyl cellulose, 5-10 parts of nano calcium carbonate and 20-45 parts of anhydrous ethanol. According to the modified calcium sulfoaluminate-calcium oxide concrete expansion agent and the preparation method therefor, through optimizing a proportioning ratio of green stock, the ratio of calcium sulfoaluminate to free calcium oxide in the expansion clinker can be in therange of (30: 50) to (50: 30); meanwhile, through modifying the expansion clinker with the modifier, the hydrating speed of the calcium oxide is lowered; and volume expansion resulting from hydrationof the calcium sulfoaluminate also plays a certain role in compensating later-stage contraction deformation of concrete, the volume of the concrete can be continuously and uniformly expanded, early-stage and later-stage contraction of the concrete can be effectively compensated, and thus, the strength of a concrete structure is guaranteed.

The invention discloses a viscosity-reducing enhanced anti-cracking agent and a preparation method thereof. The viscosity-reducing enhanced anti-cracking agent is prepared from the following raw materials in percentage by mass: 30-60% of a modified magnesium oxide expanding agent, 5-20% of synthetic fiber, 10-40% of a viscosity-reducing component and 20-50% of an enhancing component, wherein the viscosity-reducing component comprises microbead powder, cellulose ether, a powder water reducing agent and sepiolite, and the enhancing component comprises a superfine mineral admixture, silica fume, nano silicon dioxide, sodium gluconate and urea. According to the invention, a viscosity-reducing component and an enhancing component are compounded on the basis of shrinkage compensation of an expanding agent and early crack resistance of fibers, the components have a synergistic effect under a proper ratio so as to effectively reduce the viscosity of concrete and improve the strength of the concrete, and the viscosity-reducing component and the enhancing component have a promoting effect on the expanding agent so as to synergistically improve the expansion effect of the expanding agent.

The invention discloses a broken nail removal device for orthopedics. The device includes a holding member, a clamping part fixedly arranged at the lower part of the holding member and a nail removingpart fixedly arranged at the lower part of the holding member; the surface of the holding member is provided with multiple anti-skid lines; the clamping part is used for compressing the outer surfaceof a bone nail to fix the bone nail when the broken bone nail is removed and includes multiple clamping arms and a fastening ring which can move up and down relative to the clamping arms; the clamping arms are in outer expansion structure arrangement and have first ends connected to the holding member and second ends swinging relative to the first ends; and the fastening ring can drive the secondends to swing inwards so as to compress the bone nail during moving. The bone nail can be compressed through the cooperation of the clamping part and the outer wall of the bone nail, the cooperationof stopping and rotating can be performed through the nail removing part and the inner wall of the bone nail, and therefore, situations of slipping between the device and the bone nail can be guaranteed to not happen, and good nail removing effects can be achieved.

The invention discloses a medical inflatable balloon. The medical inflatable balloon comprises a pushing tube, an inner tube and an inflatable balloon, wherein the balloon is arranged at a far end ofthe pushing tube; the inner tube is arranged in the pushing tube and passes through the balloon; the pushing tube is of a hollow structure; a connector is arranged at a near end of the pushing tube; one end which is far away from the pushing tube of the balloon is welded together with the inner tube; one end which is close to the pushing tube of the balloon is welded together with a push rod; theballoon is conical after being inflated; the balloon has a rectangular sheet structure when being not inflated, and can be folded in order to be inserted into a diseased lumen easily. By adopting themedical inflatable balloon, the defect that the stenosis lesion of a conical lumen cannot be treated with the conventional balloon is overcome; meanwhile, the lumen can be supported, so that the operation quality is ensured.

The invention provides a corrugated pipe expansion tool, and belongs to the field of petroleum drilling. The corrugated pipe expansion tool comprises an upper spiral reaming body and a lower spiral reaming body; a plurality of spiral upper reaming body side wings are uniformly arranged in the circumferential direction of the upper spiral reaming body; a lower spiral reaming body is connected to the lower portion of the upper spiral reaming body, and a plurality of spiral lower reaming body side wings are evenly arranged in the circumferential direction of the lower spiral reaming body; coaxialcenter holes are formed in the middle parts of the upper spiral reaming body and the lower spiral reaming body; and the spiral directions of the upper reaming body side wings and the lower reaming body side wings are opposite. According to the corrugated pipe expansion tool, a shaft can be reamed before the expansion corrugated pipe is tripped in, the expansion corrugated pipe is mechanically expanded after the expansion corrugated pipe is tripped in, and the corrugated pipe expansion tool has cutting capacity and cuts the excess weld metal of a welding seam of the expansion corrugated pipe.

The invention discloses an expansion type sealing ring, which comprises a sealing ring body, external threads, sealing lines, internal threads and a through hole, wherein the external threads are formed on the outer side of the sealing ring body; the sealing lines are formed at the two ends of the external threads; the sealing ring body is coaxially provided with the through hole in which the internal threads are formed. The expansion type sealing ring has the advantages of high reliability, compact structure, convenience in use and manufacturing, high sealing performance, high adaptability, long service life, high elasticity, low cost and the like, and meanwhile, has broad market prospect in the rubber sealing ring market.

The invention discloses an automatic push-pull fluff adsorption device for textile wastewater treatment, belongs to the technical field of wastewater treatment, and can realize that an elastic balloonfilled with an expanding agent I is arranged, a water guide net and a heat conduction assembly are arranged in a matching manner, and the water guide net can guide water to the expanding agent I, sothat the elastic balloon is expanded; the heat conduction assembly can absorb solar energy for heating and conduct heat to the first swelling agent, evaporation of water in the expanding agent I is accelerated, the elastic balloon is contracted, meanwhile, under the combined action of a specially-made water blocking mechanism and a heat conduction mechanism, the elastic balloon can be smoothly andrepeatedly expanded and contracted, and then a push-pull plate is repeatedly pushed away and pulled back, in the process that the push-pull plate is pulled back, fluff at the far position can be pulled to the position near the adsorption plate to be adsorbed by an adsorption plate, meanwhile, water can be driven to flow, fluff at the farther position can flow to the position near the adsorption plate to be gathered, the action range of the adsorption plate is greatly enlarged, and the treatment efficiency is improved.

The invention provides a production process of high-strength rivet nuts, belongs to the technical field of rivet nut machining, and solves the technical problem that the strength of existing rivet nuts cannot be improved. The production process of the high-strength rivet nuts comprises the following steps that (1), raw material spheroidizing annealing is conducted, specifically, raw materials are selected and spheroidizing annealing treatment is carried out on the raw materials; (2), upsetting forming is conducted, specifically, the raw materials subjected to spheroidizing annealing are subjected to cold upsetting to form a blank; (3), oil is removed; (4), zone annealing is conducted, specifically, zone annealing is carried out on a designated position of the blank subjected to oil removal; (5), acid pickling is conducted, specifically, acid pickling is carried out on the blank obtained after zone annealing through an acid pickling solution; (6), tapping is conducted, specifically, tapping and tapping are carried out on the interior of the blank through a part machine to form rivet nuts; (7), surface treatment is conducted, specifically, treatment is carried out on the surfaces of the rivet nuts; (8), screening is conducted, specifically, testing is carried out on the rivet nuts, and the rivet nuts with qualified strength are screened out; and (9), packaging is carried out. The production process of the high-strength rivet nuts has the advantages that the overall strength of the rivet nuts is improved, and the production efficiency is high.

The invention provides a nozzle aligning device and a pipe expander with the nozzle aligning device. The nozzle aligning device comprises a visual inspection mechanism, a position adjustment mechanismand a controller, wherein the visual inspection mechanism is used for obtaining images of a nozzle of a workpiece to be subjected to pipe expanding and an expanding ball of an expanding rod of the pipe expander; the position adjustment mechanism is provided with a moving part which is movably arranged in the first preset direction to drive the workpiece to be subjected to pipe expanding to move in the first preset direction; the controller are electrically connected to the visual inspection mechanism and the position adjustment mechanism to receive the images from the visual inspection mechanism and control the action of the position adjustment mechanism according to the positional relationship between the nozzle and the expanding ball on the images. The nozzle aligning device solves theproblem of inconvenient aligning of nozzles in the pipe expanding process in the prior art.

The invention relates to the technical field of preparation of antibacterial and anti-mite fabrics, in particular to a preparation method of an antibacterial and anti-mite fabric. The antibacterial and anti-mite fabric comprises two layers of base layers and two layers of expansion layers; the base layers are located between the two expansion layers, and the space between the two base layers is filled with antibacterial and anti-mite medicine; the antibacterial and anti-mite medicine is powdery; the expansion layers are formed by weaving yarns A and yarns B; the yarns A have the effect of water absorption and expansion; and the yarns B have the effect of thermal expansion. According to the preparation method of the antibacterial and anti-mite fabric, the yarns A absorbing water and expanding in the expansion layers are matched with the yarns B expanding when being heated in the expansion layers, so that gaps between the yarns of the expansion layers are reduced, and therefore the antibacterial and anti-mite medicine between the base layers is protected against flowing away under the driving of water to the maximum extent; and therefore, the antibacterial and anti-mite effects of the antibacterial and anti-mite fabric are guaranteed, and the service life of the antibacterial and anti-mite fabric is prolonged.

The invention discloses a gas permeation type textile printing and dyeing process, and belongs to the technical field of textile. By simplifying an existing drying process, after infrared preliminary drying is conducted, gas permeation powder is filled and laid on the surface of woven cloth, and then a color fixing mother disc is sealed and covered; then a magnetic field is applied to force the color fixing mother disc to extrude the gas permeation powder into pores of the woven fabric, so that the gas permeation powder is dissolved in residual water in the woven fabric, the gas permeation powder releases a large amount of gas after chemical reaction, the gas rapidly permeates and expands in the woven fabric, and the water only provides a carrier for the chemical reaction and does not participate in the chemical reaction, so that the dye is not prone to migration; the color fixing mother disc is reversely extruded to release a color fixing liquid for exchange after the gas is expanded to a certain degree, the color fixing liquid enters the woven fabric along a gas permeation track, and the non-migrated dye is fully and uniformly subjected to color fixing treatment. Compared with the prior art, the drying and color fixing procedures are simplified; and meanwhile, the dyeing effect of the woven fabric is remarkably improved.

The invention discloses a guide rod device for stage separation of a guided missile. The guide rod device comprises cylindrical guide rods, first circular pulleys, second circular pulleys, first circular rubber rings, second circular rubber rings, a supporting ring, bolts, nuts and the like, wherein the cylindrical guide rods are fixed at the tail of a previous-stage guide missile through first circular through holes, the bolts and the nuts; the corresponding circular rubber rings can be directly sleeved with grooves in the outer ends of the circular pulleys; each first circular pulley is fixed in a first rectangular through hole in the middle of the corresponding cylindrical guide rod through a second circular through hole, the bolts and the nuts; each second circular pulley is fixed in a second rectangular through hole in the tail end of the corresponding cylindrical guide rod through a third circular through hole, the bolts and the nuts; the supporting ring is in interference fit and fixation with cuboid grooves in the lower surfaces of the four cylindrical guide rods through cuboid bosses which are uniformly distributed at the periphery. According to the guide rod device disclosed by the invention, the negative mass can be removed, the structure is simple, the stability in the separation process is guaranteed, the separation is enabled to quicker and the production cost is effectively reduced.

The invention discloses a method for improving the physical dimension precision of the pipe body and pipe ends of a longitudinally welded pipe. The method comprises the steps that modular subdivisioncontrol is adopted during mechanical diameter expanding, different diameter expanding rates are adopted for the pipe ends and the pipe body, the diameter expanding length of each subsection is about 2.5-3.0 m during pipe body diameter expanding, it is guaranteed that the overlapping amount of last and next subsection diameter expanding is larger than 0.5 m, and the straightness deviation of the steel pipe within the overall length range is optimally controlled to be smaller than or equal to 0.15% of the pipe length. According to the method, different diameter expanding rates are adopted according to the diameter expanding requirements of different positions, difference control over the physical dimension of the pipe ends and the pipe body can be achieved, and the diameter expanding effectand quality of the whole pipe are guaranteed.

The invention discloses an installation technology method of a rolling steel ball based on metal cold and hot deformation. The rolling steel ball comprises a tank bracket, a circulating cooling tank,a power system, a circulating cooling system, a negative pressure suction system, a rotary negative pressure absorbing tight device, a driving gear assembly, a disc lowering rotating assembly, a driving gear assembly and a composite gear shaft. The tank bracket is used as a structural support, the circulating cooling tank is used as a steel ball low-temperature treatment reaction chamber, and thedisc lowering rotating assembly is used as a tool head warming device. The installation technology method of the rolling steel ball based on the metal cold and hot deformation is compact in structureand reasonable in layout, has the advantages of high efficiency and good flexibility, and greatly reduces the labor strength.