77results about How to "Reduce recrystallization" patented technology

The invention relates to a high-strength high-conductivity copper base alloy and a preparation method thereof. The copper base alloy is characterized by consisting of the following components in percentage by weight: 0.05-0.15% of Fe, 0.015-0.06% of P, 0.008-0.045% of Zn, 0.005-0.05% of Sn, 0.005-0.04% of Ni, no more than 0.2% of impurity element in total and the balance of Cu. The copper base alloy provided by the invention has high strength and high conductivity as well as high strength and electric conductivity. After being smelted, the elements form a complicated order composite structure in a copper base, and the hardness and conductivity of the C19210 alloy is greatly improved after an aging process.

The invention provides a controlled directional solidification nickel-base high-temperature alloy recrystallizing method, which is characterized in that: a carburization and circulating heat treatment combined process is adopted to perform the heat treatment on a deformed directional solidification nickel-base high-temperature alloy, and then the alloy is subjected to standard solution treatment; a carburization is a micro-arc-spark carburization, the carburization material is a graphite electrode, and the carburization process parameters include a frequency of 1,000 to 5,000Hz, a power of 500 to 3,000W and a voltage of 20 to 100V; and the highest heat treatment temperature in each period of a circulating heat treatment process is at least 20 DEG C lower than the solid solution temperature of the alloy, the lowest heat treatment temperature in each period is not lower than the aging heat treatment of the alloy, and 3 to 10 circulation periods are adopted. The method can reduce the recrystallization-nucleation on the surface of the alloy, inhibit the growth of recrystals, reduce the stored energy of the deformed alloy, and thus control the recrystallization and obviously reduce the recrystals generated after the deformation of the nickel-base high-temperature alloy.

The present invention provides a production method of anti-aging convenient cooked rice and belongs to the technical field of food processing. The anti-aging convenient cooked rice is obtained by thespecific method comprising the steps of rice washing, soaking liquid soaking, sub-packaging, cooking, sterile vacuum sealing, cooling and crystallization, etc. The technologies of soaking by the liquid containing an anti-aging agent and rapid cooling are used to inhibit aging of starch and improve eating quality of starch-based staple food. The aging rate and the aging degree of the obtained convenient cooked rice are low; the aging degree of the convenient cooked rice obtained after storage for 90 days reduces by about 30% compared with that of the traditional convenient cooked rice; and theanti-aging convenient cooked rice has advantages of excellent taste quality, long shelf life, etc.

The present invention relates to a method for producing frozen dough by using ice-structure protein and utilizing a certain antifreezing fermentation process, belonging to the field of food processing technology. Said production method includes the following steps: adding wheat flour, granulated sugar, milk powder and yeast into a stirring apparatus, slowly beating and uniformly stirring them to obtain their mixture; dissolving ice-structure protein in ice water and adding them into the above-mentioned mixture, beating until the dough is formed into gluten film; adding salt and butter, beating them until the dough is formed into uniform and transparent film, taking out dough, standing still, cutting, rolling, further standing still, shaping and placing the dough into a refrigerator until the dough is completely hardened, sealing and storing; taking out frozen dough and proving so as to obtain the invented finished product.

The invention provides a controlled directional solidification nickel-base high-temperature alloy recrystallizing method, which is characterized in that: a coating and circulating heat treatment combined process is adopted to treat a deformed directional solidification nickel-base high-temperature alloy and then the alloy is subjected to standard solution treatment; a coating is made of Zr / NiCoCrAlYSiB, Zr / ZrO2 / NiCoCrAlYSiB, NiCoCrAlYSiB or C / NiCoCrAlYSiB; and the highest heat treatment temperature in each period of a circulating heat treatment process is at least 20 DEG C lower than the solid solution temperature of the alloy, the lowest heat treatment temperature in each period is not lower than the aging heat treatment of the alloy, and 3 to 10 circulation periods are adopted. The method can reduce recrystallization-nucleation and oxidization on the surface of the alloy, reduce the stored energy of the deformed alloy and thus control the nickel high-temperature alloy to recrystallize.

The invention provides a method for controlling the recrystallization of directionally solidified Ni-based superalloy by alumetizing, characterized by carrying out alumetizing on the surface of a directionally solidified Ni-based superalloy component that is deformed by alumetizing,; and carrying out standard solution treatment of alloy matrixes on the alumetized directionally solidified Ni-based superalloy component. According to the invention, the depth of the recrystallization of the directionally solidified Ni-based superalloy is controllable, and the control effect on the recrystallization caused by uniform deformation is significant. Compared with recrystals generated by deformed directionally solidified alloy sample without alumetizing, the recrystals are distributed scatteredly and nonuniformly, the maximum recrystallization depth is obviously reduced, the recrystallization area is correspondingly obviously reduced, there is no residual stress in electroplating process, thus the possibility of generating recrystals by residual stress is avoided. The alumetizing method is one of the most efficient methods for inhibiting the development of recrystallization.

The invention provides a low beryllium copper alloy mold material used for gravity and low pressure casting as well as a production process, comprising: adding Ni, Co and Ti elements on the basis of a low beryllium copper alloy, giving full play to advantages of the interaction of alloying elements, carrying out processing steps of cold deformation and time effect treatment after the hot forging, solution treatment and water quenching to a cast ingot, and obtaining the special low beryllium copper alloy mold material used in the gravity and low pressure casting industry and having high strength, good toughness and high heat conductivity, and products of the invention are equivalent to ASTM B534 C17500 materials and can fully replace imported goods.

A system for removing moisture from a wet gas stream including a vessel having a contact area containing deliquescing salts that produces brine as water is absorbed, the brine flowing to a collection area in the bottom of the vessel. A venturi positioned in a wet gas inlet stream produces an area of reduced pressure that is applied to a brine flow path connected to the brine collection area. In this way, the brine is recirculated into intimate contact with the wet gas inlet stream causing the brine to be diluted with water extracted from the wet gas stream.

The present invention provides a method of making a puffed food starch material product. A food starch material capable of volumetric expansion in three dimensions is placed into a puffing chamber. Expansion of the food starch material includes constraining expansion of the food starch material in at least a first dimension while permitting unconstrained expansion of the food starch material in a second dimension to produce a unitary, puffed food starch material product with at least one surface having a wavy contour.In a method of making a puffed food starch material product of the present invention, a puffing chamber is provided having inner surfaces and a chamber volume. A bulk amount of the food starch material is placed into the puffing chamber. The bulk amount of food starch material is caused to volumetrically expand. The expanding food starch material is constrained in its expansion in at least a first dimension, while permitting expansion of the bulk amount in at least a second dimension.

The invention provides an ingredient for slowing down retrogradation of starch in grain-based nutritious rice flour and a production process thereof, relating to the ingredient of infant foods and a preparation process thereof. The ingredient comprises the following components in percentage by weight: 90-95% of rice flour, 3-5% of vegetable fat power, 1-3% of sucrose ester and 1-3% of lecithin. The production process comprises the following steps of: soaking rice with water for more than 3 hours so that rice absorbs water as much as possible to expand; carrying out primary grinding and fine grinding; mixing slurry; homogenizing; pregelatinizing; drum-drying; crashing and screening to finally obtain the finished product. According to the invention, emulsifiers for resisting aging and retrogradation of starch are added in the production process of rice flour, and hydrogen bonds in the molecular helical structure of starch are destroyed under the interaction of the emulsifiers and starch in the gelatinization production process of starch, and thus the recrystallization process of starch is slowed down and the aging and retrogradation process of starch is delayed.

The invention belongs to the technical field of food additives, and particularly relates to a bread anti-aging baking oil and a preparing method thereof. The bread anti-aging baking oil is prepared from an oil base, an emulsifier, an amylase, food spices, pigments and tertiary butylhydroquinone. The oil base comprises palm oil liquid oil, palm oil stearin, soybean oil, rapeseed oil, beef tallow, cream, coconut oil and palm kernel oil. The emulsifier comprises monoglycerol fatty acid ester, diglycerol fatty acid ester, phospholipid, sodium stearyl lactate, polyglycerol fatty acid ester, propylene glycol fatty acid ester and diacetyl tartaric acid ester of mono(di)glycerides. The amylase comprises alpha-amylase, xylanase and maltogenic amylase. By means of the bread anti-aging baking oil, the ageing speed of bread can be effectively delayed, the softness and humidity of the bread are kept, and the mouthfeel of the bread is improved.

In a Ni-based, Co-based, or Ni—Co-based braze alloy (1) for high-temperature brazing of components (7) of modular structure and for repairing damaged components (7) which are formed of single crystal or directionally solidified superalloys using said braze alloy (1), the braze alloy has a first metallic powder component (2) having particle sizes in the nanometer range and a second metallic powder component (3) having particle sizes in the micrometer range. The surface of the particles of the second powder component (3) is thinly coated with particles of the first powder component (2). The braze alloy (1) additionally includes grain boundary stabilizing elements as alloying elements. In addition, melting point depressants can be present in the braze alloy (1) in a commercially common quantity or with a considerably increased proportion. Both the melting temperature of the braze alloy (1) and the probability of recrystallization are advantageously reduced.

The invention discloses a probiotic ice cream and a production process thereof. The probiotic ice cream comprises, by weight, more than 20% of full-cream milk powder, more than 15% of sugar, more than or equal to 14*108cfu / ml of probiotics and the balance water. The invention further discloses a production process of the probiotic ice cream. The production process is simple to operate, and the prepared probiotic ice cream tastes smooth, sour, sweet and delicious and has high structure stability and melting resistance.

The invention discloses retarder-free waterproof magnesium ammonium phosphate cement and a preparation method thereof. The cement comprises dead burned magnesia coated with graphene oxide, ammonium dihydrogen phosphate and mineral admixtures, wherein the mass ratio of dead burned magnesia coated with graphene oxide and ammonium dihydrogen phosphate is (62-78):(22-38), and the mineral admixtures are 5-15% of the total mass of dead burned magnesia and ammonium dihydrogen phosphate. According to the cement, dead burned magnesia powder is pretreated by graphene oxide, so that a comparatively obvious isolation effect is formed between magnesia and an external environment, therefore, the dissolution rate of magnesia is greatly decreased, a forming process of a hydration product is delayed, and the heat release of a whole reaction system is reduced; macroscopically, the time of coagulation is greatly prolonged, and any retarders do not need to be added. Moreover, a dissolution process of the hydration product and phosphate is inhibited, a large amount of pores are prevented from being formed in the cement, and the strength of hardened cement paste is ensured.

The invention discloses an industrial preparation method of dabigatran, and belongs to the field of medicinal chemistry, wherein the preparation method sequentially comprises a condensation reaction, a closed cyclization reaction, a Pinner reaction, and other steps. According to the present invention, the hydrogen chloride / alcohol / ester solution is prepared by using acyl chloride and alcohol as raw materials, such that the problems of corrosion on equipment, high hidden safety danger, environmental pollution and the like caused by the use of hydrogen chloride gas in the prior art are solved; and the reactions in various steps are subjected to the industrial-scale-based optimization, the unnecessary distillation, extraction and re-crystallization process is reduced, the process is simplified, the purification method of the final product dabigatran is improved, the purification efficiency is increased in the case of the ensuring of the process yield and the product quality, the process reproducibility is good, the preparation cost is low, and the method is the ideal industrial preparation method of the dabigatran.