8results about How to "Crystal dense" patented technology

The invention discloses a method for removing metal impurities through electrolytic coupling vacuum distillation of tin benzene sulfonate. The method comprises the following steps: step 1, preparing a liquid; step 2, preparing an electrolyte; step 3, electrolysis; 4, copper removal and refining; and step 5, vacuum distillation. According to the method, the crude tin is prepared into the electrolyte, the benzene sulfonate is added for electrolysis, the precipitation potential of lead and tin is changed, the impurity lead element with high difficulty is removed, other impurity elements in the crude tin can also be removed, the lead, copper and other impurity elements are further removed by combining copper removal refining and vacuum distillation, and the 5N or 6N standard high-purity tin is obtained. The content of the lead element and the content of the bismuth element are both smaller than 1 ppm, the content of the uranium element and the content of the thorium element are both smaller than 1 ppb, the requirement of a low-alpha-ray-dose material is met, the problem that radioactive alpha-particle impurity elements in crude tin are difficult to remove through an electrolytic method is effectively solved, the use requirement that the high-purity tin serves as a welding flux is met, and the quality of a semiconductor chip is greatly improved.

The application relates to a method for preparing a platinum layer on the surface of a niobium or titanium material matrix by electrodeposition in room-temperature ionic liquid, and belongs to the technical field of surface treatment. The method solves the technical problem of insufficient performance of the platinum layer prepared on the surface of the niobium or titanium material matrix by electrodeposition, and comprises the following steps: S1, preparing room-temperature ionic liquid; S2, pretreating the matrix; S3, acid washing and activating; S4, cleaning and soaking; S5, electrodeposition; and S6, post-treatment. The steps S3-S6 are all carried out in a protective atmosphere. The electrodeposition process temperature is at or near room temperature; the electrochemical window is wide; through optimization of the combination of the anion and cation ionic liquid, the ionic solution has adjustable physicochemical properties, thereby the oxidation-reduction potential and deposition morphology of platinum are regulated. The ionic liquid electrodeposition keeps the activated surface layer of the matrix clean, eliminates the hydrogen evolution reaction, realizes electrodeposition to obtain a platinum layer under room-temperature conditions, and the platinum layer has good interface bonding force, no porosity and dense crystallization.

The invention discloses a production process of chocolate beans suitable for high-temperature and high-moisture conditions. The chocolate beans comprise a chocolate coating and a core material, gradually wrapping the ingredients layer by layer until all the ingredients completely wrap the crushed peanuts; conveying the wrapped crushed peanuts to an oven; fully cooling the baked crushed peanuts to room temperature; the preparation method comprises the following steps: melting cocoa butter substitute, preserving heat, adding the weighed raw materials into a fine grinding cylinder, performing chocolate rolling and fine grinding, adding a nut core material into a coating machine, then adding a chocolate coating and mixed powder, starting to wrap, and packaging and sealing. The key part, namely an inner core, of a chocolate product is pretreated, so that holes in the surface of the inner core are reduced, and the density is increased; the emulsifier capable of improving the waterproofness of the product is added, so that the crystal of the grease is more compact, a fine stable crystal form is formed, the crispness-keeping performance of the product is improved, the structure of the chocolate bean is optimized, and the taste of the product is met under the condition of ensuring waterproofness and crispness.

The invention discloses a hot galvanizing method for an extra-high voltage transmission tower steel part, which belongs to the field of hot galvanizing and comprises the steps of hanging materials, pickling with hydrochloric acid to remove rust, cleaning with water, assisting in plating with a solvent, drying, purifying zinc liquid, hot-dip galvanizing and cooling, the zinc liquid purification step comprises slag removal pretreatment, zinc liquid temperature regulation and control, purification agent preparation, purification agent caging and liquid feeding, moving reaction for iron removal and scum removal, and the purification agent comprises industrial-grade metal aluminum wires and water-containing gas substances. The purifying agent is prepared from industrial-grade metal aluminum wires and water-containing gas production substances, wrapped by high-temperature-resistant glass wool cloth into a cluster, loaded into a cage frame made of titanium alloy round steel bars and reciprocatingly moved in the length direction of a zinc pot, so that iron-containing impurities in molten zinc fully react with the purifying agent in the cage frame, and a gray vermicular flocculent reaction product is generated; and then the dross is fished out, so that the purification of iron impurities in the zinc liquid is realized, the liquidity of the zinc liquid is improved, and the adhesive force of a zinc coating on a steel substrate is improved.

The invention discloses a chocolate chip forming preparation process, which comprises the following steps: proportioning according to a ratio, finely grinding chocolate, preserving heat, taking out of a cylinder, packaging and the like, and is matched with the preparation of a core material to form a complete chocolate chip preparation process and a related core material preparation process. According to the preparation method, the problems that the coating type chocolate product is surrounded by a water-phase substance for a long time in a high-moisture (such as ice cream, yoghourt and drinks) use scene, the chocolate coating falls off, the internal core material absorbs water and becomes soft, the taste is not crisp and the like, and the experience feeling is poor are effectively solved, meanwhile, the water resistance of the product is improved, so that the grease crystal is more compact, and the product quality is improved. A stable crystal-form product with better fineness is formed, and the brittleness-keeping performance of the product is improved.

The invention provides a titanium alloy bar production line, and belongs to the technical field of metal processing, the titanium alloy bar production line comprises a cogging mill, a plurality of groups of three-roller reducing and sizing units, a plurality of roller ways, a plurality of shearing devices, a plurality of pinch rollers, a plurality of hot metal detectors, a heat compensation device and a material receiving device; according to the titanium alloy bar production line, three groups of three-roller reducing and sizing units are continuously configured after the cogging mill is directly adopted, so that the length of the production line is greatly shortened, the occupied area is reduced, and the land cost of construction and operation is reduced; and the three groups of three-roller reducing and sizing units are accurately calculated and the distances are reasonably set, so that the stability of the bars in the rolling process is ensured, the problems of temperature loss and surface quality caused by long-distance transmission are reduced, a loop does not need to be arranged, and the pass tension control is easier to carry out. The design of the three-roller reducing and sizing unit can effectively control the shape and size precision of the rod, reduce the uneven deformation of the intermediate blank, and further improve the quality of the finished product.

The present application relates to the technical field of silver plating of castings, and particularly relates to a silver plating equipment and method for castings, which comprises a rack, a feeding displacement mechanism, a silver plating mechanism and a clamping mechanism, the rack is provided with a feeding channel, the feeding displacement mechanism is fixedly connected with the rack and has a displacement portal capable of moving along the direction of the feeding channel, the silver plating mechanism is fixedly connected with the rack and has a plurality of silver plating units, the clamping mechanism is fixedly connected with the displacement portal and has a clamping sliding frame capable of moving vertically, and a plurality of clamping units are fixed on the clamping sliding frame along the length direction of the clamping sliding frame. The independent silver plating units are arranged, the plating solution is forced to flow directionally in the relatively narrow silver plating cavity, the exchange capacity of the plating solution to the area of the columnar body of the casting is effectively enhanced, the power line distribution is optimized by cooperating with the accurate release end arrangement, the silver ions can be effectively transmitted and deposited on the surface of the casting, and thus the silver plating layer with uniform thickness and dense crystallization is obtained.

The application discloses an early-strength heat-insulation type light plastering gypsum mortar and a preparation method thereof. The early-strength heat-insulation type light plastering gypsum mortar comprises the following raw materials in parts by weight: 550-800 parts of gypsum powder, 100-300 parts of heavy calcium, 100-300 parts of light aggregate, 50-100 parts of inorganic retarder, 1-5 parts of early-strength water reducing agent, 1-5 parts of reinforcing agent, 1-4 parts of cellulose ether, 5-15 parts of redispersible latex powder and 400-450 parts of water. The early-strength water reducing agent is prepared by reacting high-purity gypsum and polycarboxylic acid water reducing agent solution, and high-activity functional groups in the polycarboxylic acid water reducing agent are inlaid on the surface of fibrous calcium sulfate whiskers. The light aggregate is prepared from autoclaved aerated concrete. The inorganic expanding agent is used to adjust the setting time, the early-strength water reducing agent and the reinforcing agent are used to improve the compressive strength and bonding strength of the gypsum mortar, and the autoclaved aerated concrete is used to replace traditional light aggregates such as vitrified small balls and expanded vermiculite, so that the heat preservation performance of the gypsum mortar is improved.