341 results about "Nodulations" patented technology

The invention relates to a manufacturing method for non-oriented electric steel. The method comprises the following steps of: smelting according to a clean steel process and continuously casting into billets; heating the continuous casting billets; performing hot rolling; reeling; naturally cooling to room temperature; normalizing; performing acid washing conventionally; performing cold rolling for the first time; performing intermediate annealing in the total hydrogen atmosphere or the mixed atmosphere of hydrogen and nitrogen; performing cold rolling for the second time; performing final annealing; and cooling conventionally, coating and finishing for later use. The finished product silicon steel with coarse grains and good texture can be obtained by adopting lower process heat treatment temperature; brittleness of the steel is reduced and cold rolling performance of a steel plate is improved by adopting lower normalizing temperature and intermediate annealing temperature; the problems of surface oxidation of the steel plate, nodulation of a furnace bottom roller and the like can be effectively solved by adopting lower finished product annealing temperature; and the high-grade non-oriented silicon steel with lower iron loss can be produced stably.

The invention relates to the technical field of medical image processing, and aims to provide a dynamic ultrasonic breast nodule real-time segmentation and recognition method based on deep learning. The method comprises the following steps: collecting ultrasonic mammary gland images and videos with nodules and case data with operative pathology results, constructing a data set, constructing a static image nodule segmentation network, and training the static image nodule segmentation model on an original image; predicting an intermediate frame nodule probability by using an LSTM layer, constructing a video dynamic segmentation network, and training a dynamic segmentation model; constructing a benign and malignant identification network structure by using a basic network, and training a benign and malignant identification model; and outputting nodule position information in real time, using the benign and malignant recognition model for recognizing benign and malignant nodules of each frame, and outputting the number of output nodules and the comprehensive benign and malignant probability after examination is finished. Information incompleteness of a single image can be avoided, error detection is reduced, missing small nodules are reduced, and the nodule benign and malignant identification accuracy is improved.

The invention relates to a production method of round steel, in particular to an efficient production process of high aluminum-alloy-content structure round steel. Al accounts for 0.70-1.20% in the round steel by weight. The preparation method comprises the converter smelting process, the LF external refining process, the VD furnace vacuum refining process, the square bloom continuous casting process and the rolling process. The high aluminum-alloy-content structure round steel produced through the method is low in cost, high in purity and good in castability, the adsorption rate of aluminum can be higher than 95%, calcium treatment is not needed, sequence casting of 12-15 times can be achieved, the production efficiency is greatly improved, the surface quality of the round steel is high, and the technical problems of high aluminum-alloy-content structure round steel produced in the prior art that the continuous castability is poor, nodulation occurs easily, the adsorption rate of aluminum is low, the yield is unstable, the purity is low, the surface quality of the round steel is low and the quality is unstable are solved.

A method for recycling blast furnace ironmaking dust. The bag dust, gravity ash and other iron-containing dust recovered in the blast furnace smelting process are evenly mixed with coal powder, and sprayed into the hearth from the tuyere of the blast furnace. It is required that there is no accumulation in the hearth before injection. , no nodules in the furnace throat, and its process parameters: spray bag dust, the injection amount is 6-10Kg/t iron, hot air temperature> 1000 ℃, blast furnace zinc load <0.15Kg/t iron; spray gravity ash, injection amount is 6Kg/t iron ~ 15Kg/t iron, hot air temperature > 1050°C; spray other iron-containing dust, injection amount < 8Kg/t iron, dust particle size < 0.5mm, hot air temperature > 1050°C; the present invention has the functions of increasing iron, Saving coke, benefiting silicon reduction in molten iron, promoting smooth operation of blast furnace and strengthening smelting, benefiting safe coal injection, reducing nodulation in blast furnace, protecting the environment, and clean production, etc.

A device with moving squeegees is disclosed. The squeegees can have any number of squeegee configurations. The squeegee or groups of the squeegees are configured to move independently or separately concerted fashion. The device is preferably and oral-care device and can include bristles and/or nodules that move or are stationary. In accordance with the embodiments of the invention the oral-care device includes rows of squeegees that move with a first motion and a center section with squeegees, bristles and/or nodules that move with a second motion in a direction and/or frequency that is different from the first motion.

The high temperature wear-proof nodulation-resisting furnace roller spraying material consists of MCrAlY 65-85 wt%, and mixture of oxide and boride 15-35 wt%. MCrAlY consists of M, which is at least one of Ni, Co, Ni-Co alloy and Fe, 76-88.9%, Al 3-8%, Cr 8-15% and Y 0.1-1%. In the roller spraying material, boride accounts for 5-15% and oxide 10-20%. The roller spraying material has high temperature wear resistance similar to oxide ceramic material, high temperature nodulation resistance one boride, the advantages of MCrAlY coating and stable use temperature up to 950deg.C.

The invention relates to a preparation method of high-chromium high-vanadium type vanadium-titanium ore pellets. The invention relates to a preparation method of vanadium-titanium ore pellets. With existing high-chromium high-vanadium type vanadium-titanium ore pellet preparation technologies, pellet superfusion is possible to occur, and pellet caking or nodulation are possible to occur, such that the quality of finished pellet product is influenced. The invention aims at solving the problem. The preparation method of the high-chromium-high vanadium type vanadium-titanium ore pellets comprises the steps of material blending, mixed drying, palletizing, green pellet screening, and shaft furnace roasting. Vanadium content of vanadium-titanium powder in the vanadium-titanium pellets is higherthan 4.5%, such that a requirement by blast furnace vanadium-titanium smelting is satisfied. The high-chromium-high vanadium type vanadium-titanium ore pellet preparation method provided by the invention is used for preparing vanadium-titanium ore pellets.

The invention provides a novel anti-nodulation heat resistant alloy, a stainless-steel normalizing furnace bottom roller and a manufacturing technique thereof, which is characterized in that the anti-nodulation heat resistant alloy comprises the following components by weight percentage: C, 0.10-0.50; Cr, 20.0-28.0; Ni, 20.0-38.0; Nb, 1.0-4.0; Ce, 0.010-0.030; Al, less than or equal to 5.0; Mn, less than or equal to 2.0; Si, less than or equal to 1.8; P, less than or equal to 0.025; S, less than or equal to 0.025; the rest, Fe. The manufacturing technique of the stainless-steel normalizing furnace bottom roller consists of casting process and heat treatment process. The alloy has the advantages of high anti-corrosion capability of fuel gas and higher performance of surface nodulation resistance. The alloy has super-strong capability of surface nodulation resistance and super-long service life, when used in the stainless-steel normalizing furnace bottom roller.

The invention discloses low-carbon sulfur-containing round steel for air-conditioning pipes and a production technology of the round steel. The round steel is prepared from components including, by weight, 0.12%-0.20% of C, 0.05%-0.20% of Si, 0.60%-1.10% of Mn, 0.30%-0.50% of Cr, 0.10%-0.40% of Cu, less than or equal to 0.040% of P, 0.08%-0.20% of S, less than or equal to 0.010% of [Al] and the balance Fe and inevitable impurities. A preparation method includes the steps of smelting in a converter, LF refining, continuous casting of blooms and rolling. Through reasonable component design and technical parameter control, the produced low-carbon sulfur-containing round steel for the air-conditioning pipes is good in mechanical property and machinability, stable in sulfur absorptivity, good in pourability, calcium treatment is avoided, 8-15 furnaces can be cast continuously, and the technical problems that low-carbon sulfur-containing round steel are prone to nodulation and steel leakageduring casting, unstable in yield of sulfur and the like are solved.

The invention discloses sinorhizobium SCAUs65 and application thereof. The strain is separated and purified from a fresh soybean nodulation; the strain is collected in the China center for type culture collection on March 14, 2014, the collection number of the strain is CCTCC NO: M2014084, and the strain is classified and named as sinorhizobium fredii. The strain is applied to the production of szechuan soybeans. The sinorhizobium SCAUs65 disclosed by the invention is an excellent broad-spectrum soybean rhizobium strain which has the advantages of high symbiotic nitrogen-fixing capacity, wide applicable range on szechuan soybean variety, inorganic phosphorus dissolving capacity, organic phosphorus dissolving capacity and potassium dissolving capacity and high stress resistance and has good matching affinity with szechuan main planted soybean variety. A soybean is increased in yield more than 38.9% by being inoculated with the sinorhizobium SCAUs65 without applying a nitrogen fertilizer in different ecological regions and achieves the difference to a significance level compared with a soybean which is not inoculated with the sinorhizobium SCAUs65.

The subject invention relates to compounds and compositions which induce transcripts of the nolA gene in nitrogen-fixing bacteria, such as Bradyrhizobium japonicum. Novel bacterial strains which are insensitive too NolA, soil inoculants comprising NolA insensitive bacteria and/or nolA inducers, and methods of increasing nitrogen fixation in legumes are also disclosed.

The invention provides a method for grinding a hearth roll of a continuous annealing unit on line, which aims to solve the problem of extremely easy nodulation of the hearth roll of a silicon steel annealing unit. With the adoption of the method, production and operation personnel can directly operate through the existing man-machine interface under the situations that the furnace temperature is not required to be reduced, and any mechanical equipment is not required to be increased, and the hearth roll can be ground on line at any time according to site demands. The method has the beneficial effects that the efficiency is high, the operation is convenient and quick, the quality of the lower surface of finished strip steel is ensured, energy sources are effectively saved, and the production efficiency and the yield of product are improved.

The invention discloses a preparation method of high-silicon non-oriented electrical steel for motors; Sn, Cu, B, Bi elements are added into electrical steel, and the contents are controlled reasonably, which bring into play the functions of each element and generate synergistic effect; wherein Sn and Cu facilitate the control of the morphology and distribution of precipitates and thus influence the texture; the added B and Bi elements can greatly reduce the annealing temperature of the electrical steel with high silicon content; only an annealing temperature of 870-890 DEG C is required to obtain magnetic performance with magnetic induction intensity B50 of more than 1.7 T, and iron loss P1.5 of less than 2.7 W/kg; with the combined action of the four elements and other routine alloying elements, the microstructure of the electrical steel is improved, and thus the mechanical properties of the steel are improved. Because the annealing temperature is decreased, furnace roller nodulation is completely avoided, and the scratch of strip steel is completely avoided; the production energy consumption is reduced, and thus the production cost is reduced.

The invention relates to a (Bradyrhizobium sp.) LX-JX01 and application thereof. A preparation method of an inoculant for the (Bradyrhizobium sp.) LX-JX01 includes the steps of preparing a liquid DM culture medium, preparing a solid DM culture medium, activating a strain and culturing the rhizobium. The strain can be in nodulation and symbiosis with Dalbergia odorifera. When the inoculant for the Dalbergia odorifera rhizobium LX-JX01 is used for planting Dalbergia odorifera seedlings, nodulation number root nodules is increased by 3823% than a control group, fresh weight of the root nodules is increased by 1038%, dry weight of portions, above the ground, of plants is increased by 47.22%, and seedling height and plant stem diameter are increased by 1030% and 42.3% respectively, so that the inoculant can promote growing of Dalbergia odorifera. Consequently, the inoculant has wide application prospect in planting of artificial forest of Dalbergia odorifera.

The invention discloses a Bradyrhizobium sp.RY4 strain and application thereof. The Bradyrhizobium sp.RY4 strain is preserved at the China center for type culture collection and the preservation number is CCTCC NO:M209268. When the Bradyrhizobium sp.RY4 is back-jointed to stylosanthes guianensis TPRC2 and TPRC5, the number of root nodules, the dry weight of the root nodule, the height of the strain, the fresh weight of the plant and the nitrogenase activity are greatly increased and obviously higher than those in a control group; and the effect of the RY4 back jointed to the stylosanthes guianensis TPRC2 is better. Thalli are released to the natural environment, the thalli increase the number of the groups of nodule bacteria in soil, contribute to the nodulation and nitrogen fixation of the stylosanthes guianensis, are harmless for human beings, animals and plants, and do not pollute the environment.

The invention relates to a steel-ladle gas-permeable upper nozzle seat brick. The steel-ladle gas-permeable upper nozzle seat brick comprises an upper nozzle seat brick body, a diffusion type gas-permeable ring, a gas chamber box and a gas inlet pipe, wherein a steel flowing hole, a connecting hole and an upper nozzle installing hole which vertically penetrate are formed in the middle of the steel-ladle upper nozzle seat brick body. In the continuous-casting steel-ladle pouring process, argon is blown in the whole process, and the flow rate of argon is automatically adjusted according to changes of net weight of molten steel in a steel ladle; the argon permeates through the diffusion type gas-permeable ring to form tiny argon bubbles, most of the argon bubbles move upwards to form an annular gas curtain barrier around the steel-ladle upper nozzle, and the molten steel to be fed into the steel-ladle upper nozzle is subjected to gas washing; and a stable and continuous annular gas flow is formed in the upper nozzle for preventing nodulation of the upper nozzle, and at the later stage of the steel ladle pouring, the steel-ladle lower slag caused by a conflux vortex and a discharge pitcan be effectively inhibited. By means of the steel-ladle gas-permeable upper nozzle seat brick, compared with the prior art, the pouring margin of the molten steel in the steel ladle can be reducedby 36% or above, and the weight of electrolytic inclusions of a continuous casting blank sample is reduced by 35% or above.