70results about How to "Simple manufacturing technique" patented technology

The invention discloses deformed magnesium alloy containing Yb and a dynamic separation strengthening and toughening preparation method thereof. A strengthening phase is effectively dispersed and separated out during a deformation process by selecting a special alloy element and utilizing the universal homogenization treatment and thermal squeezing technologies during the production of the deformed magnesium alloy, thereby obtaining the compound strengthening and toughening effects of deformation strengthening, refined crystalline strengthening and precipitation hardening of the deformed magnesium alloy; the obtained high intensity deformed magnesium alloy simultaneously has the characteristics of refined crystalline strengthening, separation strengthening, intercrystalline strengthening and deformed substructure strengthening, thereby obtaining very high mechanical property; the tensile strength is larger than 380MPa; the yield strength is larger than 320MPa; and the percentage of elongation is larger than 5 percent.

A heat exchanger having excellent heat exchanging performance is obtainable by a simple production technique and at a low cost. This is achieved by providing a fin member and by increasing heat conductivity between the fin member and a meandering tube body. Further, the heat exchanger is made compact for high degrees of layout freedom, enabling the heat exchanger to be installed in a tight space. Engagement grooves (8) are provided in both end surfaces (6, 7), which are opposite to each other, of a fin member (5) in which fins (4) are parallelly arranged. Straight tube sections (2) are parallelly arranged, with gaps (16) in between, in the engagement grooves (8) of the fin member (5). The straight tube sections (2) are connected at bent sections (3). A pair of meandering sections (11, 12) is arranged opposite to each other with an insertion gap (17) of the fin member (5) in between. One (11) of the meandering sections and the other meandering section (12) are connected by a connection tube (13) to form a meandering tube main body (1). The straight tube sections (2) of the one meandering section (11) are arranged in the engagement grooves (8) in the one end surface (6) of the fin member (5) inserted and arranged in the insertion gap (17) between the one meandering section (11) and the other meandering section (12) of the meandering tube body (1), and the straight tube sections (2) of the other meandering section (12) are arranged and fixed in the engagement grooves (8) in the other end surface (7).

The invention discloses a vehicle diverging traffic light and application thereof. The invention belongs to the traffic control field. According to the technical proposal of the invention, a first basic structure of the traffic light consists of a strip-shaped light, an arrowhead light and a dish-shaped light, wherein, four light bodies are manufactured to constitute a main light body for turning around, turning left, driving straight ahead and turning right. A second basic structure is that the arrowhead light is manufactured into two light bodies for turning left and driving straight ahead. A third basic structure consists of a human-shaped light, a vehicle-shaped light, a left light and a right light, wherein, a walking and pushing vehicle and two front light bodies constitute an auxiliary light body. The lights are controlled by switches and six basic signal sources can be provided, thus forming a whole or separate vehicle diverging traffic light. The application signal of the traffic light can classify, diverge and control vehicles at intersections of urban highway through signals. The vehicles can be forced to diverge at peaks; divergence of vehicles can be controlled in a normal period; the vehicles drive naturally in a depressed period. In addition, the invention provides a novel signal option for intelligent or remote control of divergence and passing of vehicles, thus improving the passing security and capability of road intersections.

The invention relates to a method for preparing a TiAl-base alloy directional fully lamellar structure. During the heating and thermal insulation, a quick heating mode is adopted to keep the TiAl alloy lamellar structure stable in the heating process to achieve the goal of controlling the growth direction of the alpha phase in the directional solidification process, thereby preparing the directional fully lamellar structure in parallel to the growth direction. The method lowers the harsh requirements for the seed crystal material in the traditional seed crystal process, so that the lamellar structures, which are not suitable to be used as seed crystals due to low structure stability, can be used as a qualified quasi-seed crystal for controlling the lamellar structure in the directional solidification process, thereby simplifying the preparation technique of the TiAl-base alloy directional fully lamellar structure.

The invention relates to a polygonum aviculare botanical bactericide and a preparation method thereof, belonging to the technical field of pesticides. The invention aims at disclosing a compound botanical bactericide formula and a preparation method thereof. The polygonum aviculare botanical bactericide is mainly prepared from polygonum aviculare, radix scutellariae, black nightshade herb, radix gentianae, rhizoma atractylodis and the like. The preparation method comprises the steps of 1, drying and crushing the raw materials, then sieving and mixing the raw materials; 2, performing ultrasonic treatment on the mixture after being subjected to cold soak in ethanol, filtering to obtain a filtered liquid, evaporating and condensing until the filtered liquid becomes paste. The polygonum aviculare botanical bactericide has a relatively good bacteriostasis function on multiple pathogenic fungal plant pathogens such as rhizoctonia solani, pythium blight pathogen, fusarium graminearum, alternaria solani and carbon-color helminthosporium carposaprum, has the effects obviously better than the chemical disinfectant thiram. The raw materials adopted in the invention are purely natural plants, so that the preparation cost is low, and small-size industrial production can be carried out; furthermore, as the plants are Chinese herbal medicines, the polygonum aviculare botanical bactericide can be degraded rapidly after the use, is safe for people and live stock, good in environmental compatibility and free from secondary pollution to the environment, and meets the current concept of green food and environment sustainable development strategy.

The invention particularly relates to a bath tub with openings being arranged around the tub wall, which belongs to a bath appliance. The bath tub is composed of a bath tub with openings being arranged around the tub wall and doors installed in the positions of the openings. The openings are arranged in the position, through which, the user can pass in and out conveniently, of the upper part of the wall of the bath tub, and doors are installed in the positions of the openings, with identical size to that of the opening, good sealing, convenient opening and closing and convenience for passing in and out. The bath tub has the advantages that the users, particularly the old, the disabled, the obese group, and other special groups, can enter the bath tub for bathing without climbing the bath wall, the inconvenience brought to the users caused by climbing is eliminated, and the worry of the family members and the nursing personnel is relieved, and the bath tub is practical and convenient.

A method for improving sulfurized corrosion resistance under high temperature by rare-earth modified MCrAlY, relates to a material modified method. The invention solves the problem that the traditional MCrAlY generally may be corroded severely when it is used under high temperature in the sulfur partial pressure of more than 0.1 Pa and oxygen partial pressure of less than 10-5 Pa. The inventive method includes the steps of: at first thermal spraying feed is produced by rare-earth metal (RE), rare-earth oxide and MCrAlY, then RE-MCrAlY coating is produced by thermal spraying the feed on the based bady material, wherein M is Ni, Co or NiCo, rare-earth is 0.1-5% of weight of the feeding, the thickness of the coating is 300-400 Mum. The inventive method is easy, and can be widely usable for commercial process. The sulfurized corrosion resistance under high temperature of MCrAlY coating can be improved to twice by adding rare-earth.

The invention relates to a polyacrylonitrile fiber, and concretely relates to a high temperature-resistant flame retardation polyacrylonitrile fiber and a production method thereof. The method concretely comprises the following steps: processing a polyacrylonitrile fiber in a hydrazine solution with the concentration of 7-20wt%, processing the hydrazine processed fiber in an alkaline solution with the concentration of 3-10wt%, washing the alkali processed fiber with water until the fiber is neutral, processing the neutral fiber in an aqueous metal ion salt solution with the concentration of 3-10wt%, oiling the metal salt processed fiber, dehydrating the oiled fiber, and drying the dehydrated fiber to obtain the high temperature-resistant flame retardation polyacrylonitrile fiber. The flame retardation performance LOI of the flame retardation fiber obtained in the invention can reach 40-45, the flame retardation grade is M1, and the amount of smoke generated in the combustion process is very small, the grade of toxic gases is FO, and the smoke amount of the flame retardation fiber in the invention is lower than that of other flame retardation fibers. The flame retardation fiber in the invention has the advantages of high moisture regain rate, high water absorption rate, good dyeability and low shrinkage in boiling water.

The invention discloses a PCF (Pohotonic Crystal Fiber)-SPR (Surface Plasma Resonance) structure sensor capable of simultaneously measuring hydrogen and methane. The PCF-SPR structure sensor is composed of a broadband light source, an optical attenuator, an air chamber, a PCF-SPR sensor and a spectrograph. Small air holes with a diameter of 1.5 microns are arranged at an angle of 45 degrees and 135 degrees on the cross section of the PCF-SPR sensor, and four ultra-large air holes with a diameter of 5 microns are vertically and horizontally distributed on the cross section of the PCF-SPR sensor, wherein the inner surfaces of the two ultra-large side holes are respectively coated with a hydrogen-sensitive film made of gold and a palladium-WO3 composite film, and a methane sensitive film madeof gold and an ultraviolet light curing fluorosilicone nano film. A gas sensing channel causes different peak shifts at different wavelengths; through structural parameter optimization, a gas mixtureof methane and hydrogen can be accurately measured by combining a side hole structure and polarization filtering without interfering with each other; and the PCF-SPR structure sensor has good multi-channel gas sensing repeatability, and a selective detection method can be applied to gases and other sensing applications, and has a good application prospect.

The invention relates to a securing device (1; 101) for a motor vehicle, having a front hood (2, 102) and a hood lock (3, 103) with a lock holder (10, 110). The hood lock (3, 103) has a rotary latch (4, 104) with a pre-locking position and a main locking position and an electric drive (5, 105) which causes a switchover of the rotary latch (4, 104) from the main locking position into the pre-locking position. In the main locking position, a release of the lock holder (10, 110) is blocked, and the front hood (2, 102) is closed. In the pre-locking position, the lock holder (10, 110) can be manually moved between a closed position, in which the lock holder (10, 110) is engaged with the rotary latch (4, 104) and the front hood (2, 102) is locked, and an open position, in which the lock holder (10, 110) is released from the rotary latch (4, 104) and the front hood (2, 102) is unlocked.

The invention discloses a rape seed soaking agent and a preparation method and application. The rape seed soaking agent is prepared from indoleacetic acid, gibberellin, brassinolide, monopotassium phosphate and zinc sulfate in a certain proportion. The method includes the steps that firstly, gibberellin, indoleacetic acid and brassinolide are weighed at normal temperature, gibberellin, auxin and brassinolide are fully mixed and dissolved with ethyl alcohol, water is added, and a mixed solution a of the three kinds of powder is obtained; secondly, monopotassium phosphate and zinc sulfate are weighed at normal temperature, water is added into monopotassium phosphate and zinc sulfate, monopotassium phosphate and zinc sulfate are dissolved, and a mixed solution b of the two kinds of powder is obtained; thirdly, the mixed solution a, prepared in the first step, of the three kinds of powder and the mixed solution b, prepared in the second step, of the two kinds of powder are evenly mixed at normal temperature, volume determination is carried out, and the rape seed soaking agent is obtained. Cost is low, the method is easy to use, operation is easy and convenient, cost is low, germination is quick, seedling emergence is orderly, growth is good, the seedling rate is high, the quality of rape is improved, the rape seed soaking agent has an obvious yield increase effect, and the yield of the rape is increased by 8-12%.

The invention discloses a recombined wood board adopting a polyimide modified polyurethane adhesive and a preparation method of the polyimide modified polyurethane adhesive. Fiber strips are bonded through the adhesive and pressed into the recombined block board. A paint layer is arranged on the surface of the recombined block board, and the side face of the recombined block board is provided with side tenons and side grooves. The adhesive is prepared from, by weight, 5-20 parts of polyisocyanate, 1-10 parts of polyanhydride, 30-50 parts of polyalcohol, 20-50 parts of plasticizer, 0.02-0.20 part of catalyst, 0.5-3 parts of defoaming agent, 0.02-0.20 part of dewatering agent, 0.02-0.5 part of coupling agent and 0.02-0.20 part of antioxidant. According to the recombined wood board, waste of wood can be effectively reduced, wood resources are saved, and meanwhile excellent economic benefits are obtained. Besides, the viscosity and light transmittance of wood floors can be effectively improved, and the connecting strength between the wood floors is improved.

In the case of a cardan-joint shaft (1) comprising a first and a second jointed shaft portion (2, 3) and comprising bearing lugs (4) fastened in each case to a fastening region (7) of the first and second jointed shaft portions (2, 3) in particular by means of screw connections (8), which bearing lugs project in each case at one end beyond the respectively associated first or second jointed shaft portion (2, 3) and, in the projecting region (4a), hold between them a single-piece journal cross (6) which is mounted with in each case one journal (5) in an opening (10) of in each case one bearing lug (4), it is sought to provide a solution which permits the realisation of a cardan joint which is of compact construction and nevertheless permits the transmission of high torques. This is achieved in that each bearing lug (4), at least in regions, engages in a positively locking and force-transmitting manner into in each case one of two recesses (12) formed diametrically oppositely in the fastening region (7) in the outer surface, in particular circumferential surface, of the first and of the second jointed shaft portion (2, 3).

The invention discloses a large roller repairing layer and a preparation method thereof. The repairing layer is mainly made of a multi-phase metal ceramic material which comprises a Mo2FeB2 hard phase and an iron base bonding phase. A preparation process of the repairing layer comprises the following steps in sequence: first, pretreating the surface of the roller in advance; next, heating and melting waste roller steel, and adding 10-20% in mass fraction of FeB and 15-30% in mass fraction of Mo powder; then, immersing the roller subjected to surface pretreatment in the molten iron for casting; then, performing laser strengthening on the surface of the cast roller; and finally, performing fine grinding treatment on the strengthened surface of the roller. According to the preparation method disclosed by the invention, a ternary boride Mo2FeB2 is formed through an in-situ reaction between the surface of the roller and a casting solution, and then a eutectoid is formed between the ternary boride Mo2FeB2 and a matrix of the roller, so that the Mo2FeB2-based metal ceramic repairing layer being high in bonding strength and being similar to a thermal expansion coefficient of the matrix is obtained; and besides, the repairing layer is low in raw material cost, simple and feasible in preparation technology, and high in production efficiency, and can be used for repairing of the surface of the industrialized and large roller.

The invention relates to a method for erecting a building skin and to a building skin erected in a corresponding manner. A substructure (14) is mounted on the building (12), and a lining (20) assembled from profiled webs (16), in particular embossed profiled webs, in a specified layout (36) is supported on the substructure (14) at some locations via profiled web holders (18). In the process, a plurality of lower support rails (24) are mounted on the building (12) in a distributed manner; the spatial position of the lower support rails (24) is measured; structure data for support elements (28)is ascertained computationally from the position of the lower support rails (24) relative to the layout (36); and the support elements (28) are prefabricated according to the structure data and positioned on the lower support rails (24) in order to support the profiled web holders (18).

The invention is based on the aim of providing a shifting device having a locking device for locking shifting rails for a transmission of motor vehicles, the device being safe to operate and cost-effective. The invention provides a shifting device (1) for a transmission of a motor vehicle having a locking device (11), comprising a selector shaft (2) for the preselection and shifting of gears in the transmission, and having a plurality of shifting rails (9) a, b, c, d for transmitting the shifting torques from the selector shaft (2) to the transmission, wherein the selector shaft (2) is aligned perpendicular to the shifting rails (9) a, b, c, d, and is axially (3) displaceable for the preselection of gears and is disposed pivotally (4) about the own axis thereof for shifting gears, whereinthe locking device (11) has a locking section (12) for releasing one of the shifting rails (9) a, b, c, d and for locking the other shifting rails and a guide section (15) for axially guiding the locking device (11) to a guide member fixed on the housing, wherein the locking device (11) is configured and/or disposed such that it is carried along upon an axial displacement (3) of the selector shaft (2) for the preselection of the gears, and runs freely upon a pivoting (4) of the selector shaft for shifting the gears, wherein the locking section (12) is configured as a first planar sheet metal section defining a locking plane in the planar extension, and wherein a guide plane is defined as a displacement plane between the guide section (15) and the guide member, wherein the locking plane and the guide plane are arranged parallel to each other on the same side of the selector shaft (2).

The invention relates to a large-scale machine tool drive device, and in particular relates to a large-scale reflex kinematic machine tool drive device. The large-scale reflex kinematics machine tool drive device comprises a machine tool frame and a machine tool body, and is characterized in that a force point fixed pulley fixed on one end of the machine tool frame, machine tool body fixed pulleys uniformly distributed on the machine tool body, a roller and a hoisting drum fixed on one end of the machine tool, and a gear shifting mechanism and a speed control motor sequentially arranged on the hoisting drum, wherein wire ropes are wound on the force point fixed pulley, the machine tool body fixed pulleys and the hoisting drum. The large-scale reflex kinematic machine tool drive device hasa unique structure, low cost and a good environmental-protection effect, and can manufacture large-scale manufacture machine tools with arbitrary sizes to suit the integral processing of large-scale workpieces and improve the product manufacture accuracy.

The invention provides new-type structure proton exchange membrane for a fuel cell and a preparation method thereof. According to the new-type structure proton exchange membrane provided by the invention, two aspects of a membrane material and a membrane structure are optimized and modified, specifically, inorganic nanoparticles are embedded into a polymer chain segment structure of conventional proton exchange membrane in situ, spatial configuration of polymer chain segments are adjusted through utilization of the nanoparticles, and further ion conductivity of the membrane is improved. The new-type structure proton exchange membrane is mainly prepared through utilization of steps such as swelling base membrane, embedding function materials and carrying out postprocessing. The obtained membrane has excellent ion diffusion rate and electrolyte affinity. Comprehensive performance of is superior to that of the proton exchange membrane in the market. The technology provided by the invention is simple in craft. Raw materials are easy to get. Expensive and complex production equipment is avoided. Large-scale production is easy to realize. According to the technology provided by the invention, performance improvement and cost reduction of the fuel cell can be remarkably propelled, and popularization of the fuel cell in the field of large-scale energy storage is prompted.

The invention relates to a battery (B) for an electric drive of a motor vehicle, comprising a plurality of battery modules (1) which are arranged in an associated layer (2, 3, 4, 5) and are accommodated in at least one associated battery housing (8). In order to produce a battery which is optimized both in terms of its manufacture and also in terms of sealing tightness and properties in the eventof a crash, the battery housing (8) is accommodated in a protective housing (14) of the battery (B).

The invention discloses an in-situ synthetic Mo2FeB2 particle reinforced iron-based composite lining plate material and a preparation method thereof. The composite lining plate material comprises thefollowing components in percentage by weight: 0.35-0.55% of C, 0.2-0.5% of Cr, 0.2-0.4% of Mn, 0.2-0.3% of Si, 3.7-15% of FeMo60, 2.5-10% of FeB, no more than 0.025% of S, no more than 0.035% of P andthe balance of Fe. By adoption of the preparation method disclosed by the invention, the hardness and the abrasive resistance of the composite lining plate material can be greatly improved, and the impact toughness of the composite lining plate material can be improved; besides, the technology for preparing the composite lining plate material is simple and feasible, the production efficiency is high, both the energy conservation and the emission reduction are achieved, and the comprehensive mechanical performance is relatively high; the performance requirements of high-performance lining plates for ball mills can be met; and the application prospects in the fields of petroleum, cement, mines and the like are broad.