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37results about How to "No reduction in productivity" patented technology

Method of replacing lime with limestone for slagging and producing steel in oxygen top blown converter

The present invention belongs to the field of steel production, and relates to a method of replacing lime with limestone for slagging and producing steel in an oxygen top blown converter. The invention is characterized in that the limestone is directly added during slagging in the steel production process. The added batch number is increased and the amount of each batch of material is reduced. Namely the lime is added by 1-3 times for slagging formerly, and when the limestone is added for slagging, the limestone is added by 4-8 times. The adding amount of each time, calculated according to the CaO therein, is 1 / 2-1 / 3 of lime added formerly and is for preventing the condensing and incrusting at the metal surface in the furnace in the early period of converting. The adding amount of limestone, calculated according to CaO therein, accounts for 30%-100% of adding amount of lime in the batch. The method of the invention has the main advantages of elimination of lime calcining procedure or reduction of production scale, reduction of cost required for operating the calcining device and reducing the discharged pollution, prevention of heat waste caused by cooling the lime after calcining, low sulfur content in the lime generated in the oxygen top blown converter, and benefit for restraining resulfurization of melted iron in the steel production process.
Owner:UNIV OF SCI & TECH BEIJING

Annealing treatment method and device for reducing internal stress of crystal

The invention provides an annealing treatment method for reducing the internal stress of a crystal. The annealing treatment method comprises the following steps: (1) a preparation stage: putting the crystal to be annealed into a crucible, vacuumizing the crucible, and introducing inert gas; and (2) a heating stage: heating the crucible by using a heating device, and in the heating process, respectively controlling the heating temperatures of a plurality of first heating rings concentrically arranged above the crucible in the heating device so that the crucible forms a radial temperature gradient. The heating temperature of a plurality of first heating rings of the heating device is controlled, the crucible forms the radial temperature gradient, the radial temperature gradient different from or opposite to the radial temperature gradient during crystal growth can be obtained and radial stress of the crystal can be remarkably reduced. The heating temperature of the first heating ring below the crucible and the heating temperature of the third heating ring on the side face of the crucible are controlled, the axial temperature gradient of the crucible is achieved, the axial temperaturegradient different from or opposite to the axial temperature gradient of the crystal in the growth process can be obtained and basic elimination of residual thermal stress can be achieved.
Owner:SICC CO LTD

Feed mulberry and feed ramie mixed complete materials for beef cattle

The present invention discloses to feed mulberry and feed ramie mixed complete materials for a beef cattle, and relates to the technical field of feeds. The mixed complete materials consist of the following raw materials in percentages by mass: 10-15% of feed mulberry powder, 0-10% of feed ramie powder, 0-5% of pennisetum purpureum powder, 0-5% of sweet sorghum powder, 40-50% of corn flour, 0%-15% of soybean meal, 5%-15% of wheat bran, 5%-12% of dry distillers' grains, and 3%-8% of beef cattle premixes. The raw materials are crushed, the crushed raw materials are screened, the screened raw materials are mixed, the mixed raw materials are stirred evenly, the beef cattle premixes are added, an appropriate amount of an antioxidant is added, the mixture is stirred evenly to obtain the mixed materials, the mixed materials are granulated into granular materials, the granular materials are finally cooled, and the cooled granular materials are dried to obtain the finished products. The feed is mainly used for the breeding and fattening of the beef cattle in a growing and fattening period, can significantly reduce the use amount of grain protein powder and reduce the culturing costs under the conditions of ensuring no reduction of production performance of the beef cattle, can also balance the structure of daily grains, and reaches the effects of improving daily weight gains, improving slaughtering rates, and shortening the fattening effects in a fattening cycle.
Owner:湖南德人牧业有限公司 +1

Rolling process of improving 38CrMoAl steel rolling state structure

The invention discloses a rolling process of improving a 38CrMoAl steel rolling state structure. The rolling process is characterized by comprising the following steps of 38CrMoAl steel blank selection, steel blank heating, steel blank rough rolling, steel blank medium rolling, steel blank finish rolling and steel cooling. The rolling process of improving the 38CrMoAl steel rolling state structurehas the following advantages that a relatively low final rolling temperature is controlled, so that the surface temperature of a rolled piece is lower than a temperature of a core portion in the process, the steel core portion obtains a relatively large compressive stress in the rolling process, the structure uniformity is greatly improved, and crystal grains are further refined; the final rolling temperature is lowered to be close to the actual critical phase change point Ar3, a phase change from gamma to alpha is promoted, and a nucleation site of ferrite is increased, so that a structure morphology of a product is ferrite and pearlite structures in a balanced state; and the rolling process is green and environmentally friendly, does not pollute the environment, is capable of lowering the cost and increasing the benefit and particularly has important significance of controlling the online structure and the performance of medium-low carbon alloy structural steel.
Owner:XINING SPECIAL STEEL +1

Chamfering device of hard fragile plate

The invention provides a chamfering device of a hard fragile plate, which is used for processing a glass base plate used for a display panel and edges of other hard fragile plates. The chamfering device can measure the processing dimensions of all processed workpieces completely without or hardly increasing production beats, thereby being capable of realizing higher processing accuracy without reducing the processing accuracy. In the chamfering device comprises upstream side upper video cameras, a downstream side upper video camera and a downstream side lower camera, wherein the upstream side upper video cameras for observing the upper surfaces of the two side edge parts of workpieces are configured at both sides of the width direction of a work table, which are opposite to the upstream side of the feed direction of a tool; the downstream side upper video camera for observing the upper surfaces of the two side edge parts of the workpieces is arranged at the downstream side of the feed direction of the work table of the tool; and the downstream side lower camera for observing the lower surfaces of the two side edge parts of the workpieces is arranged at the downstream side. By means of the chamfering device, chamfering processing is carried out when the work table is in feed motion, and the chamfering dimension is measured by utilizing the downstream side cameras after the chamfering processing is carried out.
Owner:NAKAMURATOME SEIMITSU IND

Production method of decorative plate

The invention discloses a production method of a decorative plate. The production method comprises the following steps that S1, cleaning is conducted, specifically, a multi-layer plate is put into a flat pasting machine, the multi-layer plate is cleaned through a dust removal device of the flat pasting machine, the surface of the multi-layer plate is rolled and brushed through a brush roller, and meanwhile the plate face is flushed and blown through negative pressure dust removal and blast airflow; S2, gluing is conducted, specifically, the multi-layer plate is subjected to the cleaning process and conveyed to a gluing roller through a conveying device, and glue is smeared on the surface of the multi-layer plate through the gluing roller; S3, drying is conducted, specifically, the multi-layer plate with the glued surface is conveyed into a dryer, and the drying time is set according to the quality of the glue and the plate till moisture of the glue is fully evaporated; and S4, plate covering is conducted, specifically, after moisture of glue on the multi-layer plate is removed, the multi-layer plate is conveyed to a plate covering station, the glued face of the multi-layer plate is covered with a solid wood plate, rolling is conducted, and a pine plate and the multi-layer solid wood plate are fully pasted. According to the scheme, the produced novel composite decorative plate can be modeled by pine wood and shaped by multi-layer solid wood, is attractive and practical, and has better nail-holding power and decorative effect.
Owner:佛山市骏品装饰材料有限公司

Method of replacing lime with limestone for slagging and producing steel in oxygen top blown converter

The present invention belongs to the field of steel production, and relates to a method of replacing lime with limestone for slagging and producing steel in an oxygen top blown converter. The invention is characterized in that the limestone is directly added during slagging in the steel production process. The added batch number is increased and the amount of each batch of material is reduced. Namely the lime is added by 1-3 times for slagging formerly, and when the limestone is added for slagging, the limestone is added by 4-8 times. The adding amount of each time, calculated according to the CaO therein, is 1 / 2-1 / 3 of lime added formerly and is for preventing the condensing and incrusting at the metal surface in the furnace in the early period of converting. The adding amount of limestone, calculated according to CaO therein, accounts for 30%-100% of adding amount of lime in the batch. The method of the invention has the main advantages of elimination of lime calcining procedure or reduction of production scale, reduction of cost required for operating the calcining device and reducing the discharged pollution, prevention of heat waste caused by cooling the lime after calcining,low sulfur content in the lime generated in the oxygen top blown converter, and benefit for restraining resulfurization of melted iron in the steel production process.
Owner:UNIV OF SCI & TECH BEIJING

Annealing method and device for reducing internal stress of crystal

The invention provides an annealing treatment method for reducing the internal stress of a crystal. The annealing treatment method comprises the following steps: (1) a preparation stage: putting the crystal to be annealed into a crucible, vacuumizing the crucible, and introducing inert gas; and (2) a heating stage: heating the crucible by using a heating device, and in the heating process, respectively controlling the heating temperatures of a plurality of first heating rings concentrically arranged above the crucible in the heating device so that the crucible forms a radial temperature gradient. The heating temperature of a plurality of first heating rings of the heating device is controlled, the crucible forms the radial temperature gradient, the radial temperature gradient different from or opposite to the radial temperature gradient during crystal growth can be obtained and radial stress of the crystal can be remarkably reduced. The heating temperature of the first heating ring below the crucible and the heating temperature of the third heating ring on the side face of the crucible are controlled, the axial temperature gradient of the crucible is achieved, the axial temperaturegradient different from or opposite to the axial temperature gradient of the crystal in the growth process can be obtained and basic elimination of residual thermal stress can be achieved.
Owner:SICC CO LTD
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