42results about How to "Wide process applicability" patented technology

The invention discloses high-carbon-chromium bearing steel and a manufacture method thereof. The high-carbon-chromium bearing steel comprises the following chemical compositions by weight percentage: C: 0.90-1.05; Cr: 0.90-1.20; Mn: 0.90-1.25; Si: 0.45-0.75; Al: 0.02-0.04; oxygen is less than or equal to 0.0007; phosphorus is less than or equal to 0.010; sulfur is less than or equal to 0.005; titanium is less than or equal to 0.0025; copper is less than or equal to 0.15; nickel is less than or equal to 0.10; nitrogen is less than orequal to 0.0070; and the balance of unavoidable impurities and Fe. The manufacture method comprises the following steps: smelting in an electric furnace, refining in a ladle arc furnace, degassing in a vacuum furnace, pouring steel liquid into steel ingots, heating steel ingots in a heating furnace, rolling the steel ingots into square billets by a rolling mill, heating the steel ingots in a heating furnace and rolling the steel ingots into round steel by a rolling mill. Compared with the prior art, the invention has high hardenability, high crystal grain size of more than 8 grade, high commonality in technology and wide application.

The invention discloses a low-temperature carbonization apparatus and method for oil sand, oil sludge, oil shale and biomass. The apparatus comprises a delivery apparatus, a storage bin, a metering apparatus, a drying furnace and a surge bin. The method comprises the following steps: drying, preheating, carbonizing, and cooling. The core of the invention is an external heating type rotary carbonization furnace which realizes the pyrolysis of oil sand, oil shale, oil sludge (oil sludge on the ground, oil sludge at the bottom of a tank and oil-containing sludge from oil refinery) and biomass, and the product is high in purity and low in loss. The invention effectively solves the problems of solid materials such as adhesion, wall accretion and the like in the pyrolysis process by material returning. The technology provided by the invention is simple in process and reliable and stable in operation, and has obvious advantages in the treatment of small particle materials such as oil shale, oil sand, oil sludge (oil sludge on the ground, oil sludge at the bottom of a tank and oil-containing sludge from oil refinery), biomass and the like.

A process for preparing super-purity high-C high-Cr bearing steel includes smelting in electric furnace, intermittently flowing out oxidative slags while adding lime, inputting oxygen in molten steel, tapping in ladle while adding special slags, alloy, carbonizer and deoxidizing agent, blowing argon gas from bottom of ladle, refining for 40-60 min, vacuum treating for 20-35 min, and casting ingots. Its advantages are ultrahigh purity and low contents of oxygen and Cr.

The invention relates to an aircraft islet landing wave-off decision method, comprising the following steps: (1) establishing a wave-off flight path curve set; (2) establishing a wave-off safety region Ssafe and a wave-off risk region Srisk; (3) comparing airplane position information with a wave-off envelope curve; and (4) judging whether the current region of an aircraft has a wave-off risk or not. The invention firstly designs the wave-off decision method applicable to special flight maneuvering of islet landing; the adaptability of the process is wide and the wave-off risk measurement can be carried out aiming at any flight position of the aircraft; and reasonable references are provided for the wave-off maneuvering safety of the emergency condition of an islet landing process, so as to have effective helps to pilots to relieve psychological pressure and improve the wave-off safety.

The present invention provides a plate burning process of a precise screen. The process employs a way of secondary exposure way to complete the film graphic transfer to the screen, and specifically comprises steps of: A) film production: first compensating the film, then adding composing and positioning to ensure a composing position deviation no more than 100 mum in a secondary plate burning of the screen; B) plate burning: carrying out composing and plate burning according to composing position required by printing, wherein the first plate burning energy set value is a minimum value of the exposure latitude, and the secondary plate burning energy value is set at a peak value of the optimum exposure. The method of the invention employs a parallel light plate burning machine to achieve clear text and effectively control edge jag and side virtual exposure; meanwhile, as the screen is treated with exposure for two times, the exposure energy is sufficient, and the pressrun of the screen film is improved.

The invention provides a method for preparing a compound amino acid organic liquid fertilizer. The method takes cheap fermentation industrial waste water as raw material and carries out filtration, evaporation concentration, primary evaporation crystallization, second evaporation crystallization, cooling crystallization, standing, salting-out and other process steps, thereby obtaining the high-valued and high-fertilizer efficiency compound amino acid organic liquid fertilizer. The method does not occupy high-priced limited soybean meal, blood meal, starch, other acid and basic chemical medicaments and other resources and greatly reduces the product cost; meanwhile, water-insoluble substances produced by filtration during the process can be used as protein supplement feeds for ruminants, sulfate and amino acid organic solid fertilizers are good fertilizers, and the method leads the fermentation industrial waste water to be completely recovered and utilized, has wide range of applications and is not only suitable to be completed on a small-investment evaporator at normal pressure, but also suitable to be completed on an advanced energy-saving consumption-reducing vacuum evaporation crystallization device at negative pressure; furthermore, the method does not emit any substance to the outside and does not produce any pollution.

The invention discloses a waste paper pulping and papermaking advanced waste water treatment technique, comprising the following steps of: waste water collection, magnetization, first-stage dosing reaction, first-stage precipitation, second-stage dosing reaction, second-stage precipitation and temporary storage of clear water. The technique has the advantages that (1) the technique is based on physicochemical technology, and the design is scientific and reasonable, so that good effect of advanced waste water treatment can be ensured; (2) the technique not only removes organic pollutant and chroma in the waste water with high efficiency, but also greatly reduces the hardness of the waster water and lays foundation for recycling the waste water; and (3) the technique has wide technical applicability and strong shock resistance capability.

The invention relates to a continuous oxygen bleaching refining agent and a preparation method thereof. The continuous oxygen bleaching refining agent comprises a rare-earth catalyst, a hydrogen peroxide stabilizer, biodegradable surfactant, Gemini surfactant, hyperbranched surfactant and water. Compared with a conventional refining agent, the continuous oxygen bleaching refining agent has the advantages that the continuous oxygen bleaching refining agent is efficient and environmental friendly and wide in process applicability, the NaOH use amount is lowered by about 40%, the COD value of discharged wastewater is lowered by more than 40%, and the whiteness, capillary effect and breaking strength of fabric treated by the continuous oxygen bleaching refining agent are evidently better.

The invention discloses a method for Ni-Fe alloy production and Sn recovery from Ni-Sn ferroalloy scrap by high-sulfur coal sulfuration volatilization and oxidation slagging. The method is characterized by comprising the process steps as follows: the Ni-Sn ferroalloy scrap is crushed to certain blockness, transferred into an intermediate frequency furnace or an electric furnace and then heated to certain temperature, a nitrogen gas spray gun is inserted into a molten pool for stirring after the material is in a molten state, and the high-sulfur coal is crushed to certain granularity and sprayed into the molten pool for a sulfuration volatilization reaction of Sn in the material; after the sulfuration reaction is finished, the high-sulfur coal is stopped from being sprayed into the furnace, certain slagging constituent is added into the molten pool for Ni-Fe liquid purification, and certain alkalinity of the molten pool is controlled in the process; after certain period, slag and Fe are completely separated, produced Ni-Fe liquid and slag are discharged from a Fe outlet and a slag outlet respectively, and resources including Ni, Fe and Sn are recovered effectively in the process. According to the method, the characteristic of high sulphur content of the high-sulfur coal is sufficiently utilized for Sn sulfidation treatment of the Ni-Sn ferroalloy scrap, the resources including Ni, Fe and Sn are recovered effectively, waste is treated by waste, the technological process is simple to operate, the production cost is lower, and broader industrial prospect is provided.

The invention discloses a thermo-mechanical treatment method for controlling a TiAl alloy fine grain structure, and relates to the technical field of hot working preparation of high-temperature structural materials. The thermo-mechanical treatment method is used for obtaining TiAl alloy fine grain near-lamellar structure and a fine grain full-lamella structure through combined use of pre-deformation treatment and isothermal thermal treatment means, a TiAl alloy blank is placed into a box-type heat treatment furnace, pre-heat-preservation is conducted, pre-deformation treatment is completed, then isothermal heat treatment is conducted, and the TiAl alloy fine grain structure is obtained. According to the thermo-mechanical treatment method, the thermo-mechanical treatment process with accurate temperature control is adopted, according to accurate analysis of the two-phase temperature interval range and accurate design and control of the deformation amount, the deformation rate and the heat preservation temperature in the deformation heat treatment process, accurate adjustment and control over the TiAl alloy structure can be achieved, and the fine grain near-lamellar structure and thefine grain full-lamellar structure are obtained.

The invention discloses an epoxy resin composition capable of rapid thickening and a fiber reinforced composite material semi-cured material thereof, the epoxy resin composition is composed of rapid curing epoxy resin and an epoxy thickening agent containing active hydrogen, and the initial viscosity of the epoxy resin composition capable of rapid thickening at 25 DEG C is 5-100 Pa.s. The epoxy resin is low in viscosity and beneficial to infiltration of reinforced fibers, amino reactive hydrogen of an epoxy thickener and epoxy functional groups are subjected to a rapid cross-linking reaction at the temperature of 20-70 DEG C for thickening, the viscosity is 2,000-500,000 Pa.s at the temperature of 25 DEG C after thickening, and the epoxy resin fiber reinforced composite semi-cured materialstable in storage is formed. The invention also discloses a fiber reinforced composite material semi-cured material such as a chopped fiber sheet molding compound, a chopped fiber felt prepreg, a continuous fiber or fabric prepreg and the like, which is prepared by infiltrating a plurality of reinforced fibers into the epoxy resin composition and carrying out a thickening reaction at 20-70 DEG Cfor 1-200 hours.

The invention provides a slab continuous casting manufacturing method for medium-manganese wear-resistant steel. The slab continuous casting manufacturing method mainly comprises the electric furnace primary smelting process, the ladle furnace refining process and the continuous casting process, wherein in the steel ladle furnace refining process, argon stirring is carried out before the crane ladle operation of the refining furnace, the stirring area is better to be greater than 40% of the area of a liquid steel surface, the stirring time needs to be longer than 5 min, the standing time after stirring can be longer than 5 min, 2.5-3.75 m/t of a silicon calcium line is fed in, and the crane ladle operation is conducted when the standing time is longer than 3 min; the degree of superheating of a steel liquid inside a tundish is controlled within 25-32 DEG C; the intensity of secondary cooling is controlled within 0.1-0.6 L/kg; meanwhile, the continuous casting speed is controlled. The slab continuous casting manufacturing method is suitable for medium-manganese wear-resistant steel, can effectively reduce the longitudinal crack defect of the medium-manganese wear-resistant steel, the obtained manganese amount is controlled within 6-9% (lower than 13% of high manganese wear-resistant steel), is mainly applied in the industries of coal machines and the like, and is good in processing performance, high in wearing resistance and low in cost meanwhile.

The invention relates to the technical field of aluminum bar heating, in particular to a fuel gas type universal rapid aluminum bar heating system for long bars and short bars. The fuel gas type universal rapid aluminum bar heating system comprises a feeding unit, a heating unit and a peeling and shearing unit. The feeding unit, the heating unit and the peeling and shearing unit are sequentially connected through a conveying roller way. The peeling and shearing unit comprises a power aluminum bar conveying roller way. The other end of the power aluminum bar conveying roller way is connected with a hot shearing machine. A short bar conveying mechanism is connected beside the hot shearing machine. A hot peeling machine is arranged beside the power aluminum bar conveying roller way. A short bar pushing mechanism is arranged between the hot peeling machine and the power aluminum bar conveying roller way. A three-station gantry manipulator is arranged above the power aluminum bar conveying roller way, the hot peeling machine and the short bar pushing mechanism. By the adoption of the structure, the fuel gas type universal rapid aluminum bar heating system for long bars and short bars is high in mechanization degree and low in labor intensity; long bars and short bars can be replaced rapidly, energy consumption is low, the technological applicability is high, the fuel gas type universal rapid aluminum bar heating system is particularly suitable for production of various types of aluminum alloy and industrial aluminum products of various specifications and lengths, and the production yield is high.

The invention discloses a production process of an A2-grade fireproof thermal insulation board. The production process is characterized in that a formed insulation board is used as a substrate, and then a flame retardant material is uniformly sucked into or filled into or injected into the insulation board to obtain the A2-grade fireproof insulation board. According to the production process, an original non-flame-retardant insulation board is converted into an EPS board which can achieve the A2-grade fireproof effect. The using performance of the insulation board is improved to a great extent, and meanwhile, the problem of the presence of the non-flame-retardant insulation boards on the market is solved, so that the insulation board can be better applied to the building field. The production process has relatively wide process applicability and a good flame retardant effect and can meet the A2-grade fireproof grade requirements.

The invention relates to a splitting agent and a preparation method thereof and discloses a modal fiber napping splitting agent with a skin-core structure and a preparation method of the modal fiber napping splitting agent. The modal fiber napping splitting agent with the skin-core structure is prepared from components in percentage by mass as follows: 20%-40% of organic phosphonic acid, 10%-20% of p-toluenesulfonic acid, 5% of polymeric polyacrylic acid and the balance of deionized water. The modal fiber napping splitting agent has the advantages and effects as follows: not only can the napping splitting purpose be achieved, but also little influence is produced on strength of fabric, and a machine cylinder cannot be damaged.

The invention discloses a slag-metal reaction simulation test device for continuous casting crystallizer covering slag. The device comprises a medium-frequency induction furnace and a bottom blowing device. The medium-frequency induction furnace comprises a graphite crucible, a furnace shell, an induction coil and a furnace cover. The furnace shell is arranged outside the graphite crucible, the induction coil is arranged between the graphite crucible and the furnace shell and arranged on the graphite crucible in a sleeving mode, and a feeding port is formed in the furnace cover and covers thetop of the graphite crucible; the bottom blowing device comprises a bottom gun and a protective gas source which are introduced into the bottom of the graphite crucible, and the bottom gun is externally connected to the protective gas source through a protective gas blowing pipe. The invention also discloses a simulation test method which can provide dynamic slag-metal reaction and can simulate continuous TiN precipitation and simulate the slag-metal reaction degree in production under the condition of continuous steel casting by switching a bottom blowing N method, thereby more accurately judging whether the crystallizer casting powder is applicable or not.