334results about How to "Reduce trimming" patented technology

The invention discloses a peach tree shape applicable for high-density planting. The peach tree shape of the invention is Y-shaped, and consists of a trunk and two large branch groups. Two large fruit branch groups can be produced on the upside of the trunk, and are arrayed oppositely in a line, and respectively extend into the two side rows; the extension direction is perpendicular to the row direction, as well as has a 45-55 degrees angle with the vertical direction. Fruit branches and small sized fruit branch groups are produced on the large fruit branch groups. The peach tree shape of the invention is applicable for high density planting, the structure of the tree is simple, the pruning is simple, the forming is quick, and the cost is low. The method of the invention is easy to be learned, the operation is simple. Standard management can be conducted for the invention to ensure that the peach orchard realize early rich and high-quality yield, high yield and stable yield.

WC-CO nm composite powder is prepared by one of the three ways: 1. W-CO raw material, crystal depressor and carbon powder are mixed in proportion to be milled to mixed powder of the oxide and carbon 2. The W-CO raw material, crystal depressor are processed to oxide powder by a compound technology then to be mixed with carbon powder to be milled to a mixed powder of the oxide and carbon 3. W-CO raw material, crystal depressor and soluble carbon oxide powder with carbon by a compound technology which refers to spray pyrolytic decomposition, spray drying and spray burning. The nm WC-CO composite powder is got by putting the oxide powder in a reacting furnace, controlling temperature of recovery carburization and time and washing carbon temperature and time.

The invention discloses a fixed-width press plate blank width control method, and belongs to the technical field of steel rolling automatic control. During the process of laterally rolling the head and the tail of a plate blank by a fixed-width press, the head part and the tail part of the plate blank are in plane stress states; according to the metal flow principle of the head part and the tail part of the plate blank, and tongue and fishtail phenomena can be generated. In order to improve the condition, the widths of the head and the tail of the plate blank are controlled in short stroke by adopting the fixed-width press; under the working condition that stripe steel rolling temperature and rolling cycle are ensured, the severe width failure of the head and the tail of the stripe steel can be improved, and the final rolling target width index is ensured effectively; a pass band guarantees the width index deviation range to be 0-8mm, the yield is improved, and the production cost is saved; and when the plate blank is pressed greatly, similar to the small lateral pressing amount, the outlet width is obtained through pressing one time, the rolling temperature of the stripe steel is ensured, and the rolling cycle is improved.

The invention relates to a reduction-oxidation graphene/nanometer metallic silver aerogel with a three-dimensional structure and a preparation method thereof. The aerogel has a three-dimensional porous structure which is formed by a reduction-oxidation graphene slice layer and a polycrystal nanometer metallic sliver uniformly loaded on the reduction-oxidation graphene slice layer. The aerogel is prepared according to the preparation method which comprises the following steps: (1) uniformly mixing a soluble silver salt aqueous solution with a graphene oxide aqueous solution, thereby acquiring a pecursor solution; (2) transferring the pecursor solution into a reducing agent solution, reacting at room temperature, thereby acquiring a three-dimensional graphene/metallic silver nanometer grain hydrogel; and (3) taking out and cleaning the three-dimensional graphene/metallic silver nanometer grain hydrogel, drying, and then acquiring a target product. Compared with the prior art, the reduction-oxidation graphene/nanometer metallic silver aerogel has the advantages that the preparation method is simple, the whole reaction process is performed at a room temperature, no excessive extra energy consumption is required, and the like.

The invention relates to the technical field of motor stator core manufacturing, in particular to an automatic efficient motor stamped steel device and a punching technology thereof. The automatic efficient motor stamped steel device comprises a silicon steel plate material coil, a deflection material conveying device, a customized punching machine, a one-time finished product punching die, an automatic finished product sorting mechanism, an automatic numerical-controlled discharging device and a waste recycling device. The punching machine of the improved structure can enable the material coil to freely swing without being uncoiled, and the sorting device can be additionally arranged; the punching die of the improved structure manufactures motor stamped steel finished products through one-time punching, and the automatic finished product sorting mechanism can automatically sort stamped steel. The punching technology of the automatic efficient motor stamped steel device comprises the steps that the overall coil is conveyed automatically, motor stamped steel finished products are manufactured, stator stamped steel and rotor wafers are automatically separated and sorted. The technology has the advantages that processes are few, the stamped steel finished products are smooth, and stamped steel quality is high.

The invention discloses a high-capacity silicon-based anode material for a lithium ion battery and a preparation method thereof, and the lithium ion battery. The material comprises nanometer silicon, graphite, organic matter pyrolytic carbon and lithium fluoride. A preparation method comprises the following steps of carrying out mixing, drying and vacuum baking on the nanometer silicon, the graphite and a pyrolytic carbon organic matter precursor to obtain a composite precursor, baking the composite precursor to obtain a pyrolytic carbon coated composite, and utilizing lithium salt solution and fluoride solution to carry out in-situ reaction on the surface of the composite to generate a lithium fluoride coating layer, namely the high-capacity silicon-based anode material for the lithium ion battery. Through in-situ generation of the lithium fluoride on the surface of the silicon-based composite, the interface characteristic of the material is effectively improved, the compactness and the stability of a solid electrolyte membrane formed by the material in the first lithium insertion process is improved, so that the electrochemical performance of the material is improved, the first charge and discharge efficiency of the battery is more than 80%, and the capacity retention ratio after 50 charge and discharge cycles is more than 85%.

The invention discloses a manufacturing method of a super-thick steel plate (thickness is 60 millimeters) and belongs to the steel plate production field of metallurgical industry. The manufacturing method of the super-thick steel plate comprises the following steps: firstly, sending a plate blank which is heated to a certain temperature and removed an oxide scale to cooling space to conduct forced cooling, surface temperature cooling a phase transition temperature of the super-thick plate material above Ar 1, then by short time temperature returning, the surface temperature rising to the range between 780 DEG C and 880 DEG C, and sending the plate bland to a rolling mill to roll as soon as possible; when the surface temperature of the plate blank being higher than 880 DEG C, needing to conduct the forced cooling again, and then conducting the subsequent rolling. A cooling-temperature returning-rolling process can be repeated for many times if needed till rolling to the needed thickness of the super-thick steel plate. The manufacturing method of a super-thick steel plate can increase dependent variable of the central area by increasing temperature difference between a surface layer and the central area and has the advantages of being beneficial to refining central organization and improving impact toughness, beneficial to removing center porosity of the super-thick plate, and capable of reducing double strand shape on lateral sides of the super-thick plates. The manufacturing method of a super-thick steel plate further has the advantages of being saving in investment, and flexible to operate.

The invention discloses an electrolyte additive for improving low-temperature properties of a lithium ion battery and electrolyte and relates to the technical field of lithium ion batteries. The additive is pyridine with an electron donor group substitution group, and in addition, the molecular structure of the additive is free of intense electron withdrawing group substitution group. When the additive is applied to lithium ion battery electrolyte, the ion conduction velocity of the electrolyte under a low-temperature condition can be increased, the curing point of the electrolyte can be reduced, the charge and discharge capacity and the circulation performance of the lithium ion battery at a low temperature can be improved, meanwhile the wettability of an anode piece and a cathode piece can be improved. The additive does not affect the performance of a battery cell at normal temperatures and high temperatures, and is gentle to the environment.

The invention relates to a peach tree pruning method which belongs to the technical field of peach tree cultivation. After peach seedlings are colonized, 15cm to 20cm of fixed pole height is adopted; a fixed pole is provided with more than 5 to 7 good leaf buds which grow straightly upwards along a young sprout cultivating central pole on the top end; other germinal young sprouts at the matrix form wheel-shaped branches; after 3 to 4 years, 3 to 4 of the branches are selected as boughs to be cultivated; both sides of each bough are evenly provided with side branches and bearing branches; the angles formed between the boughs and the ground are kept to be about 30 degrees to 40 degrees. After 4 to 5 years of cultivation, a coiled tree shape with the 3-to-4-year boughs as the backbone is formed. The tree shape cultivated through the method makes full use of the characteristics of the natural growth of a peach tree; in the preliminary period, tree crown expands quickly, has high yield and good quality, is low in height, convenient and labor saving in operation; the light condition in the bore is fully improved, the matrix is not bald, the full bearing period is prolonged, the tree is strong, the economic life is long, and the peach tree cultivation has very good promotion and application value.

The invention belongs to the metallurgy technical field and discloses a sponge iron production technology by coal gasification. The invention is characterized in that: coal and oxygen, water or steamreact in a high temperature high pressure entrained flow gasifier to generate reducing coal gas rich in CO+H2, the reducing coal gas is subject to dust removal, desulfuration and pressure and heat transformation by a gasifier discharge coal gas process system and then mixed with decarburization gas rich in CO+H2 after shaft furnace top gas passes through a return coal gas process system and a carbon dioxide separation system, and then the mixed gas is heated to the temperature range required by the shaft furnace and then fed into the shaft furnace to reduce iron ore, so as to produce sponge iron. The invention reduces high temperature high pressure entrained flow gasifier cost; the shaft furnace top gas circulating reflux is fully utilized to reduce coal use consumed in sponge iron production, and cost is saved; and CO2 is collected and recycled.

The invention provides a method for preparing a MnO2/carbon composite material for a super-capacitor. The method includes the steps of step one, dissolving glucose or sucrose or fructose in deionized water, stirring until a settled solution is obtained, transferring the settled solution into a hydrothermal reaction kettle, performing centrifugation, water washing, alcohol washing and drying on an obtained polymeric pecursor solution to prepare monodisperse carbon spheres; step two, taking the monodisperse carbon spheres, performing heat treatment on the monodisperse carbon spheres in a NaOH solution, then performing centrifugation, water washing and alcohol washing on a mixture solution three times, conducting drying, and performing calcination treatment in vacuum or inert atmosphere; step three, using the carbon spheres experiencing modified treatment in the step two as a template, placing the template in a KMnO4 aqueous solution, stirring and aging at the room temperature, obtaining a sediment, performing centrifugation, water washing and alcohol washing on the sediment, performing drying in a vacuum oven, and obtaining CS@MnO2 coated powder. Obtained MnO2/carbon sphere composite powder is of a core-shell structure, the specific surface area of the powder can reach more than 778m<2>/g, the specific capacity of the powder can reach more than 439F/g, charge transfer resistance is lower than 2.1 omega, and the powder is a novel super-capacitor electrode material.

The invention provides a fast frame-climbing method of shed frame pear tree boughs. The frame-climbing method is carried out on a shed frame of a three-line one plane or two-line one plane mode, and frame climbing is carried out by three steps of strengthening, pulling in an inclined mode, and pulling in a level mode. The first step of strengthening is that young shoots are guided onto an elevation guide line in a vertical mode during a growing season so that the young shoots can keep a vertical growing state. The second step of pulling in an inclined mode is that base parts of the shoots growing vertically are pulled in a level mode and fixed behind the shed frame face during autumn of the same year, and then are guided onto the elevation guide line according to a 45-degree angle, namely, the base parts of the shoots are firstly pulled in a level mode and fixed and then pulled in an inclined mode. The third step of pulling in a level mode is that the shoots are pulled in a level mode and fixed on the shed frame face during autumn of the next year. The fast frame-climbing method has the advantages of being fast in frame-climbing, few in water shoots, small in trimming quantity, large in frame face fruit area, high in output and the like.

The invention relates to a carriage longitudinal beam tailor welding tool. The carriage longitudinal beam tailor welding tool comprises a fixing frame and a first stand column which is fixed on the edge of one side of the fixing frame, wherein the edge of the other side of the fixing frame is fixedly connected with the lower portion of a second stand column, a regulating rod is fixed on the edge of the position, between the first stand column and the second stand column, of the fixing frame, and a base plate is fixedly connected with the surface of one end of the fixing frame. The carriage longitudinal beam tailor welding tool has the advantages that a part to be welded is accurately located and reliably clamped, so that the part to be welded is conveniently assembled and welded, and structural accuracy of the part to be welded is improved.

The purpose of the present invention is to provide a lithium-ion secondary battery with small internal resistance, excellent load characteristics and low reduction in capacitance due to repeated discharge and charge.

The lithium-ion secondary battery of the present invention attaining the above purpose comprises a positive electrode, negative electrode and electrolyte; said positive electrode and negative electrode are configured by binding an active material layer, including an electrode active material and a binder, to a collector; the binder used for at least one of the positive electrode or negative electrode includes polymer particles; and the polymer particles satisfy the following properties:

• • swelling degree in the electrolyte of a sheet-like molded body, obtained by pressure molding of only the polymer particles, is 5 to 50%, and lithium ion conductivity of the sheet-like molded body swollen by the electrolyte is 1×10⁻⁴ S·cm or more.

The invention discloses a polymerizing production method for transparent amorphous copolyester. The method has the advantages of low esterification temperature, short esterification time and high esterification rate. The method comprises the following steps of: carrying out an esterification reaction and a condensation reaction on dihydric alcohol and dicarboxylic acid to obtain the transparent amorphous copolyester, wherein the esterification reaction comprises the following specific procedures of: breaking various materials into pulp by using a pulping machine and carrying out the esterification reaction on the pulp at the temperature of 220-240DEG C for 1.0-1.5 hours to obtain an esterified product; the condensation reaction comprises the following specific procedures of: polymerizing the esterified product obtained by the esterification reaction at the reaction pressure of 0.2-0.5MPa and the temperature of 250-260DEG C for 1.5-2 hours; then reducing the pressure to be less than 200MPa within 0.5 hour; raising the condensation reaction temperature to be 275DEG C from 260DEG C; adding a thermal stabilizer; and after the condensation reaction, obtaining a polyester copolymer with the inherent viscosity of greater than 0.75dL/g and the carboxyl content of less than 10mol/t.

The invention discloses a compound stopping agent for preventing pulverized coal from spontaneous combustion and a preparation method of the compound stopping agent. The compound stopping agent mainly comprises a component A and a component B, wherein the component A comprises 70%-90% of a penetrant and 10%-30% of peroxide; the component B comprises inorganic salt. The component A and the component B are mixed at a weight ratio of 1:(1.5-3) and used as the compound stopping agent. The preparation method comprises steps as follows: firstly, the penetrant is prepared into an aqueous solution, then the peroxide is dissolved in the penetrant, and the mixture is stirred, so that the component A of the stopping agent is obtained; the component A is matched with the inorganic salt of the component B for use. The compound stopping agent has the characteristics of low cost and non-toxic. During the use, the component A and the component B of the stopping agent are jointly and uniformly added to the pulverized coal, the operation is simple, the stopping effect is excellent, and the compound stopping agent has a wide application prospect.

The invention discloses a carbon-containing slag suppression cold-bonded pellet and a utilization method thereof. In the carbon-containing slag suppression cold-bonded pellet, the TFe content is smaller than or equal to 45%, the carbon content is larger than or equal to 5%, the content of volatile components (including decomposable gas) is larger than or equal to 10%, and the specific gravity is smaller than or equal to 3.5 g/cm<3>. The pellet is added into a converter from a high bin while lance lifting is about to be finished through blowing in the dephosphorization stage of the converter or when lance lifting is about to be finished through the blowing end point of the converter, and then deslagging or tapping is carried out. The carbon-containing slag suppression cold-bonded pellet and the utilization method have the beneficial effects that iron and carbon in gas dust sludge or other iron and carbon containing metallurgy dust sludge can be efficiently utilized, and waste paper pulp, tar slag and other waste are used as additives for pelletizing; the process is simple, and cost is low; the pellet is only used as slag, heat energy of the slag is fully utilized, and the influence of the temperature of molten steel is extremely low; foam slag can be suppressed effectively, and deslagging or tapping in the dephosphorization stage is facilitated; and by means of reduction of FeO in the pellet and FeO in the slag, the yield of the molten steel is increased, consumption of a deoxidizing agent and an alloy is reduced, and slag-splashing furnace protection work is facilitated.

A pulsation damper (20) includes a first diaphragm (21) and a second diaphragm (22) having a first pressure-receiving film portion (21a) and a second pressure-receiving film portion (22a) and defining a gas chamber (23) between the first pressure-receiving film portion (21a) and the second pressure-receiving film portion (22a) and an annular attachment member (24) configured to support the first diaphragm (21) and the second diaphragm (22). Pressure receiving areas (A1, A2) of the first pressure-receiving film portion (21a) and the second pressure-receiving film portion (22a) are different from each other. The annular attachment member (24) includes a large-diameter annular support portion (24a) formed so as to surround the first pressure-receiving film portion (21a) and to support the first diaphragm (21); a small-diameter annular support portion (24b) formed so as to surround the second pressure-receiving film portion (22a) and to support the second diaphragm (22); and an annular coupling portion (24c) configured to couple the large-diameter annular support portion (24a) with the small-diameter annular support portion (24b) so as to close the gas chamber (23).