41results about How to "Fast passivation" patented technology

The invention provides a chromium-free passivation solution as well as preparation and using methods thereof. The passivation solution is prepared by dissolving a solute composed of multiple substances into deionized water, wherein the solute in the solution comprises the following raw materials according to the ratio: 60-80g/L of sodium molybdate, 5-10g/L of sodium tungstate, 2-7g/L of ethanol, 15-50g/L of acetic acid, 20-40g/L of hydrogen peroxide, 5-10g/L of ethylenediaminetetraacetic acid disodium and the balance of water. The chromium-free passivation solution is firm in adhesive force, low in porosity and corrosion-resistant.

The invention discloses a method for extracting rapeseed oil and passivated myrosinase from rapeseeds and belongs to the technical field of agricultural resources.The method has the advantages that raw materials are soaked by deionized water, moisture in cells is turned into steam during steam explosion or pressurization heat-moisture treatment, and cell walls are broken to allow the cell structure to be loose and promote the dissolution of grease in the cells; an ethanol solution is used as the oil extraction medium, glucosinolates and most degradation products are allowed to enter a water phase, the glucosinolate and glucosinolate degradation product contents in cake are lowered, and the detoxification procedure of rapeseed cake is reduced; enzyme use is avoided, oil production cycle is shortened, production cost is reduced, oil product quality is optimized, and the problems that the glucosinolate and glucosinolate degradation product contents of the cake obtained by a traditional rapeseed process are high, high-quality protein resources are wasted, a large amount of enzyme needs to be used, cost is high or environment pollution is severe, and the like are solved.

The invention discloses a biochar-based soil conditioner capable of deactivating dryland soil-contained heavy metals and application thereof. The biochar-based soil conditioner is composed of, by weight percentage, 30-45% of biochar, 5-10% of dipotassium phosphate, 3-5% of potassium sulfate, 10-15% of calcium magnesium phosphate, 5-10% of humic acid, 15-30% of limestone and 5-20% of dolomite. Theapplication method of the biochar-based soil conditioner comprises applying the biochar-based soil conditioner to the surface of soil, ploughing the soil to uniformly mix the biochar-based soil conditioner with the soil, and after 10-20 days of balancing, performing planting or transplanting. The biochar-based soil conditioner can achieve resource utilization of straw, and meanwhile through synergistic effects of the components, achieve the aim of deactivating soil heavy metals, inhibiting heavy metal absorption of vegetables and improving quality of soil and vegetables and further achieve theaim of production and restorage integration of heavy metal contaminated drylands.

The invention relates to a production method of quick-cooking rice. The method is characterized by comprising the following steps of: slowly humidifying and tempering by an atomization method; and evaporating moisture of the rice surface by use of hot air; and processing with ultrasonic wave and microwave, wherein based on the special inside-to-outside heating principle from of microwave and the cavitation effect, resonance effect and warm effect of the ultrasonic wave, the rice grains are moderately gelatinized tiny holes are formed at the same time, and the cooking performance of the rice can be obviously improved. The joint treatment of hot air, microwave and ultrasonic wave also can obviously kill or passivate entomogenous fungi enzyme hidden in the rice grains to improve the storage performance of rice. By humidifying and tempering based on an atomization method, the crackle ratio of rice grains is effectively reduced, and the loss of nutrients is reduced. The method provided by the invention is environment-friendly and pollution-free in rice treatment, and obviously improves the cooking performance and storage performance of the product.

A detection device determines whether an uncontrolled movement of a control surface of an aircraft is occurring. The device includes means for calculating the difference between a theoretical command and an actual command in order to form a residual value, and means for detecting an uncontrolled movement of the control surface, if a comparison value depending on this residual value is greater than a threshold value If the comparison value is greater than the threshold value during a confirmation time, then the uncontrolled movement of the control surface of the aircraft is confirmed.

The invention discloses a preparation method for an aluminium alloy radiator passivating solution before lacquering. The passivating solution comprises 6-8 g/L of sodium molybdate, 4-6 g/L of potassium tetrafluoroborate, 3-5 g/L of magnesium titanate, 8-10 g/L of sodium zirconate, 16-18 g/L of aqueous polyurethane, 12-14g/L of boric acid, 4-6 g/L of acetic acid, 1-2g/L of thiourea and the balance water. The preparation method comprises: weighing all raw materials according to the above proportions, putting in a reaction kettle, heating to 35-45 DEG C, then starting a stirrer, controlling the rotation speed to be 160-180 r/min, stirring for 15-25 min, then cooling to room temperature and putting for 10-12 h.

A stirring-type passivation device is used for workpiece passivation in pretreatment of an electrostatic spraying line. The device comprises a passivation groove; a clapboard is disposed at the bottom of the passivation groove; a plurality of through holes are disposed on the clapboard; the passivation groove is divided into upper space and lower space by the clapboard; an air feed pipe is disposed at the bottom space between the clapboard and the passivation groove; the air feed pipe is connected with an air blower; a plurality of air vents are disposed on the air feed pipe. A concentration controller is also disposed on the passivation groove. A discharge pipe is disposed at the bottom of the passivation groove. The effect is that: through air stirring in the passivation groove, a passivating solution flows in the groove, and thus concentrations of various parts of the groove become uniform; additionally, no precipitation or crystallization is caused through air stirring, and the flowing of the passivating solution can increase the passivation speed; therefore, a washing effect is achieved, and various parts of the workpiece are fully passivated.

The invention belongs to the technical field of cutting tool processing, and in particular, discloses a processing device for a hard alloy cutting tool. The processing device includes a rack, a passivation box, a gear box, a base and a cutting tool box; the gear box is fixed at the upper end of the rack, and the base is fixed at the lower end of the rack; the base is provided with a sliding columnwhich can move up and down, the upper end of the sliding column is fixed with a support seat, the gear box is aligned with the support seat, and the support seat is provided with a concave cavity which is rotatingly matched with the exterior of the passivation box; a column cavity is arranged at the center of the concave cavity; a sliding block is arranged in the column cavity in a manner of sliding up and down and is provided with a support rod; positive and negative thread grooves are arranged on the support rod, and the two thread grooves are connected end to end; the center of the lower end of the passivation box is provided with a sliding cavity; the bottom of the sliding cavity is provided with a sliding hole, and the inner wall of the sliding hole is provided with a bulge. Comparedwith the prior art, the device can passivate the cutting tool with different strength according to needs, so as to achieve the passivation effect required by the cutting tool. At the same time, the device can rapidly passivate the cutting tool in batches, thereby greatly improving the passivation efficiency of the cutting tool.

The invention provides an electronickelling chromate-free passivator and a preparation method thereof. The electronickelling chromate-free passivator comprises the following components of, by weight,12-20 parts of acetic acid, 2-8 parts of sodium citrate, 3-10 parts of cobalt nitrate, 6-15 parts of sodium phosphate, 4-12 parts of phosphoric acid, 1-6 parts of potassium ferricyanide, 4-9 parts ofsodium molybdate, 5-15 parts of water soluble persulfate and 300-1000 parts of water. The electronickelling chromate-free passivator provided by the invention is simple and environmentally friendly incomponent, hexavalent chromium and other toxic substances are not contained, volatile gas and smell are avoided during passivation, environmental friendliness is achieved, passivation speed is high,passivation time is only 5-10 s, a passivated electronickelling product has good corrosion resistance and inoxidizability, and the surface is smooth and glossy.

The invention discloses a method for rapidly passivating soil cadmium based on an amino acid complexing redistribution principle. The method is characterized in that by independently applying glycine,heavy metal cadmium (Cd <2+>) in soil can be effectively and quickly passivated, meanwhile, by ingeniously utilizing glycine complexing and combining that the complex is redistributed on the solid-liquid two-phase soil, more heavy metals are distributed to the solid-phase soil, and finally the purpose of rapidly and efficiently passivating the heavy metals is achieved. According to the method forpassivating the heavy metal cadmium, the method is simple, the cost is low, a complex material combination is not needed, the energy-consumption production process is not needed, an exogenous solid material does not need to be used as a precipitant; and moreover, secondary pollution does not exist, negative effects on the environment do not exist, and the method is environment-friendly.

The invention discloses an ethylene cracking and cleaning agent and a preparation method thereof. The ethylene cracking and cleaning agent is prepared from Tween 80, citric acid, sodium persulfate, potassium permanganate and secondary deionized water, wherein the percentage by weight of each component is as follows: the Tween 80 accounts for 15-25%, the citric acid accounts for 0.4-0.6%, the sodium persulfate accounts for 15-25%, cinnamaldehyde accounts for 4-6%, the potassium permanganate accounts for 1-2%, and the secondary deionized water accounts for 40-50%. The ethylene cracking and cleaning agent disclosed by the invention has the beneficial effects of high efficiency, no toxicity, no corrosion, no secondary pollution and fast passivation action against ferrous sulfide, and can effectively prevent spontaneous combustion of the ferrous sulfide; the using method is simple, large process adjustment is not required, and only small alteration is needed on the basis of an existing device; the ethylene cracking and cleaning time is 8-10 hours, more than 90% of the ferrous sulfide can be removed, and the shutdown time of the device is correspondingly reduced; a protective film can be formed on the surface of metal after cleaning, so that the surface of the metal can be effectively prevented from being further corroded; and a mixed solution after being treated by the cleaning agent can be directly discharged without the impact on a sewage treatment field.

The invention discloses a passivator used for a powder zincizing metal workpiece and a preparing method and application of the passivator. Each liter of passivator comprises the following raw materials including 5 g-26 g of chromium trichloride, 10 g-20 g of sodium nitrite, 2 g-4 g of nickel chloride, 5 g-8 g of cobalt chloride, 2 g-6 g of ammonium bifluoride, 15 mL-25 mL of hydrogen peroxide andthe balance water. The invention further provides a preparing method of the above passivator and the application of the passivator in powder zincizing metal workpiece passivating treatment. By means of the passivator, the chromium trichloride is adopted as the main film forming compound, nickel chloride and cobalt chloride are introduced, and under the effect of the sodium nitrite, a passivating effect is achieved both on a zinc layer and a zinc-iron alloy layer on the surface of the powder zincizing metal workpiece. The neutral salt mist resisting performance of the metal workpiece obtained after passivating treatment of the passivator can reach 1200 h or above, and the corrosion resistance of the metal workpiece is improved. The passivator does not contain hexavalent chromium, carcinogenic raw materials do not exist, environment pollution is reduced, the passivating effect is good, and the application range is wide.

The invention discloses a novel environmentally-friendly passivating agent, which is characterized by comprising 30 to 40 g/L of sodium silicate, 10 to 20 g/L of phosphate, 5 to 10 g/L of accelerant and 0.5 to 1 g/L of surfactant, wherein the mass ratio of the silicate to the phosphate is 2-3: 1; the accelerant is potassium chlorate; the surfactant consists of 1.8 to 2.2 weight parts of OP-10, 0.8 to 1.2 weight parts of TX-100 and 0.8 to 1.2 weight parts of NP-5; and the pH value of the mixed solution is adjusted to be between 3 and 5 by using phosphoric acid. Compared with the prior art, thepassivating agent quickly passivates the surfaces of steel parts, and does not cause environmental pollution and the like.

The invention discloses a green passivating agent for metal doors and windows and relates to the technical field of treatment of the metal doors and windows. The green passivating agent contains 2-hydroxyl-3-butene-1-amine hydrochloride. Passivating liquid provided by the invention is green and safe; raw material sources are wide, the passivating speed is rapid, the efficiency is high and the quality of a passivating film is stable.