165results about How to "Reduce production requirements" patented technology

The invention discloses a method for integrally casting a more-than-25-ton large-sized diesel engine V-shaped body by utilizing nodular cast iron. The method comprises the following steps of A1, smelting the nodular cast iron in a smelting furnace, and adding bariumsili and metallurgical carborundum pretreatment agent after the smelting; A2, placing a spheroidizing agent into a bottommost layer of a dam-type spheroidizing ladle, utilizing a nucleating agent to cover a second layer, and utilizing a low-maganese low-alloy broken steel sheet to completely cover and compact a third layer; A3, adding a calcium-barium nucleating agent, charging the melted iron in one step to carry out the tapping metal-stream inoculation, realizing the nucleating effect while carrying out the spheroidizing treatment on charged melted iron, and carrying out the pouring pretreatment on the melted iron in the ladle; A4, placing the metal-stream inoculation agent into a funnel to carry out the pouring metal-stream inoculation; and A5, finally pouring the melted iron with the temperature being more than or equal to 1400 DEG C into a sand box, forming a cast by mold filling and solidifying the melted iron under the feeding of the feeder head liquid metal, and carrying out the heat treatment by utilizing the waste heat of the cast.

The invention relates to an efficient and environment-friendly rubber-powder-modified asphalt waterproof coiled material and a preparing method. The preparing method comprises the steps of mixing anduniformly stirring 34-54 parts of matrix asphalt and 1.5-15 parts of softening oil, increasing the temperature to 150-170 DEG C, starting to add 10-15 parts of waste rubber powder and 0.01-0.03 part of an activating agent, increasing the temperature, maintaining the temperature at 170-180 DEG C, conducting development for 60-80 minutes at the rotation speed of 20-200 r / min, afterwards, adding 4-15parts of waste rubber powder, conducting stirring development for 10-20 minutes, conducting cutting and grinding once through a colloid mill, adding 15-30 parts of a filler, and then conducting stirring development for 30-60 minutes to obtain a modified asphalt coating material; conducting coating and cladding technologies on the prepared modified asphalt coating material, and then conducting cooling rolling to prepare the rubber-powder-modified asphalt waterproof coiled material. According to the efficient and environment-friendly rubber-powder-modified asphalt waterproof coiled material andthe preparing method, by adding the activating agent, all technology parameters of the batching period are greatly adjusted, the technology time can be shortened, the technology temperature and stirring speed can be lowered, and the prepared product also has better performance indexes, has excellent storage stability and application performance, and is an efficient, energy-saving and environment-friendly product.

The invention relates to the technical field of drainage valves, and discloses a volume control type sewage pipe connecting valve. The volume control type sewage pipe connecting valve comprises a pipebody. Flange plates are fixedly connected to the left and right ends of the pipe body, a ball valve body is fixedly installed on the middle portion of an inner cavity of the pipe body, sealing fasteners are fixedly installed at the junction between the upper and lower outer walls of the ball valve body and the inner wall of the pipe body, the bottom end of the ball valve body is fixedly connectedwith the inner wall of a valve seat bearing in a sleeving mode, the bottom end of the valve seat bearing is fixedly connected with the inner bottom of the pipe body, the top end of the ball valve body is fixedly connected with an upper valve stem, and a valve top bearing is fixedly connected to the outer wall of the upper valve stem in a sleeving mode. According to the volume control type sewagepipe connecting valve, by arranging a gear set, a handle rotates two circles to drive a first bevel gear to rotate one circle, so that a driven gear drives a driving gear to rotate by ninety degrees,that is, the handle rotates two circles to drive the ball valve body to rotate an opening and closing period, so that higher rotation precision is conveniently obtained under the condition of manual rotation, and the control amount of the equipment to the pipeline water flow is more accurately controlled.

The invention discloses a flexible strip steel treating line suitable for producing various high-strength steel. The flexible strip steel treating line comprises an uncoiling working position, a washing working position, a heating working position, a soaking working position and a slow cooling working position, a jet cooling working position or a water quenching cooling working position in turn, wherein a reheating working position and then an overaging working position or a hot galvanizing working position and a cladding alloying and annealing working position are arranged after the jet cooling working position; a moveable bypass channel is arranged to connect the reheating working position and the overaging working position respectively; a final cooling working position and a flatting working position are connected after the overaging working position and the hot galvanizing working position; then, a finishing working position and an oil coating working position, or a passivating working position and other post-treatment working positions are connected; the finishing working position and the oil coating working position are connected to a coiling working position to finish a finished product; an acid cleaning working position and an electroplating working position are arranged corresponding to the water quenching and cooling working position; the reheating working position can be connected after the acid cleaning working position directly; an uncoiling and washing working position can be directly connected before the electroplating working position; and the bypass channel or a switching device is arranged after the electroplating working position to respectively and correspondingly connect the reheating working position or directly connect the passivating working position and the other post-treatment working positions.

The invention discloses a preparation method of a thick film solar cell. The thick film solar cell is a flexible substrate amorphous silicon / polycrystalline silicon laminated heterojunction cell, wherein a polycrystalline silicon layer is obtained by crystallizing a small-particle polycrystalline silicon layer at low temperature, and has a small thickness, so that waste of a silicon material is reduced greatly, and the cost is lowered remarkably. The thick film solar cell prepared with the method has the characteristics of low cost, high yield, easiness for production and high photoelectric conversion efficiency of the obtained product.

The invention discloses an automobile steering knuckle and a manufacturing method thereof. The automobile steering knuckle comprises a fixing plate with one side connected with a rotating shaft, a first shaft sleeve and a second shaft sleeve, wherein the first sleeve and the second sleeve are arranged on the other side of the fixing plate; a main pin hole and a rotating-arm supporting hole perpendicular to the main pin hole are formed in the first shaft sleeve, and a fixing hole used in cooperation with the main pin hole in the first shaft sleeve is formed in the second shaft sleeve. The fixing plate comprises a base plate and two inserting plates symmetrically arranged on the two sides of the base plate, and the first shaft sleeve and the second shaft sleeve are arranged on the two inserting plates on the two sides of the base plate respectively. In addition, the invention also provides a forging method of the automobile steering knuckle, and the method includes the steps of material putting, preheating, blank preparing, heating again and side cutting. The automobile steering knuckle has the advantages of being high in strength, light in weight, easy to use, convenient to install and stable in firm, and using of people is greatly convenient.

The invention discloses a current transformer for a GIS, belonging to the field of high voltage apparatuses, which comprises an internal shield cylinder and a coil which is sleeved on the internal shield cylinder, and is characterized by further comprising an upper flange, wherein the upper flange is hermetically connected with the upper end of the shield cylinder, and the upper end of the shield cylinder is provided with ring-shaped convex edges, a semi-circular fastening element in an L-shape cross section is arranged on the lower portion of the convex edges, and the semi-circular fastening element is connected with the upper flange, a ring-shape tray is arranged on the lower end of the internal shield cylinder, and is used to bear the coil, and insulating resin is poured between the coil and the outer walls of the internal shield cylinder.

The invention discloses a camera group calibration method and device based on a global calibration frame, and the method comprises the following steps: designing the size, ID and geometric position posture of a calibration plate for the view field range of each camera; detecting cell corner points, and obtaining an absolute pose of the camera under a calibration plate coordinate system; carrying out nonlinear optimization and coordinate system conversion according to the absolute poses of the cameras, and estimating and obtaining the relative positions and poses of the multiple cameras. According to the method, by constructing a global calibration frame, the relative positions and attitudes of a plurality of cameras are estimated, and the method has important theoretical and practical values.

The invention discloses a silver precursor, a tellurium precursor and a preparation method for controllably synthesizing silver telluride quantum dots. The method comprises the following steps: mixing one or more silver mercaptide with organic phosphine to prepare an activity-adjustable silver precursor, and thermally injecting the tellurium precursor synthesized in air, thereby obtaining the silver telluride quantum dot. The method is easy to operate, good in repeatability and low in cost. The emission wavelength of the silver telluride quantum dot is adjustable in a range of 1150nm-2000nm by regulating and controlling the types and the proportion of thiol and phosphine, the proportion of a silver source to a tellurium precursor and the reaction time, the half-peak width of the emission wavelength is narrow, and the fluorescence quantum yield can reach more than 10%. The method can be used in the field of biomedical imaging, can also be used for preparing other nano materials containing silver or chalcogenide elements, and is suitable for large-scale industrial production.

The invention relates to an irregular micro electrolysis iron carbon filling material, which is in a blocky shape. At least one irregular bulge and at least one irregular groove are respectively distributed and arranged on the two opposite end surfaces of the filling material, the irregular bulge and the irregular groove are correspondingly distributed and arranged at top and bottom on the two opposite end surfaces of the filling material, the irregular bulge and the irregular groove are approximately in a gear shape, and the whole of the filling material is inclined and / or has the radian. The technology solves the technical problems of the traditional filling material that the production cost is high, the contact reaction area is small, the reverse flushing is not easy, in addition, the effect is poor, the service life is short, and the like. The irregular micro electrolysis iron carbon filling material has the advantages that the large contact reaction area is realized, the sewage treatment effect is good, the reverse flushing is easy, in addition, the effect is good, the labor operation quantity is reduced, and the production cost and the use cost are reduced.

The invention provides a preparation process of a calcium stannate ceramic material precursor. The preparation process comprises the following steps: respectively grinding stannic oxide and calcium carbonate (or calcium oxide) into powder with certain granularity; mixing the stannic oxide and the calcium carbonate (or calcium oxide) at the Sn:Ca molar ratio of 1:(1-1.1) to obtain a mixed material; agglomerating and drying the mixed material; placing the mixed material into CO / CO2 atmosphere, heating and roasting, wherein the roasting temperature is 800 to 1,000 DEG C, the roasting time is 15 min to 60 min, and the CO volume concentration [CO / (CO+CO2)] of the roasting atmosphere is 10% to 25%; and cooling, crushing and levigating the roasted product to obtain the calcium stannate ceramic material precursor. The process has the characteristics of low sintering temperature, short roasting time, high stannum conversion rate, short process flow, simplicity and convenience in operation and the like. The whole roasting process is performed under a solid condition, without a special requirement on roasting equipment, so that the industrialized production is easy to realize.

The invention discloses a process for extracting salicin from populus euphratica fallen leaves. The process is characterized by comprising the following steps: adding calcium oxide into populus euphratica fallen leaf shreds, and adding water for decomposing; extracting the solution twice at the temperature of 30 DEG C, collecting filtrate, and combining the filtrate; adjusting the pH value to 10.0-12.5, allowing the solution to stand, and collecting the filtrate; concentrating the filtrate, adding a clarifying agent or an adsorbent for decolorizing while stirring at the temperature of 70 DEG C, and colleting the filtrate; adjusting the pH value to 3.0-5.0 at a normal temperature, allowing the solution to stand, and collecting the filtrate; adding ammonium water or ammonia gas into the filtrate for adjusting the pH value to 7.0-9.0, concentrating the filtrate till the specific weight is 1.2, and crystalizing the filtrate at the normal temperature in a static manner for 72 hours; and separating a crystal, drying the separated crystal at 80 DEG C, and smashing the dried crystal. The process has the beneficial effects that water with low environmental pollution is taken as an extraction solvent, so that the production cost and the workshop requirement are lowered; ash is removed by adopting sulfuric acid or sulfate, and the crystal is obtained through the crystallizing step, so that the purity of a final product is increased, and can be over 65 percent in general; and natural fallen leaves of populus euphratica in autumn are taken as raw materials, so that damage to vegetation is prevented.