1115results about How to "Reduce sticking" patented technology

The invention relates to a power embedment anchor with high-frequency micro-amplitude vibration in the ship and ocean engineering technical field. The embedment anchor comprises an anchor cover, an anchor shank, an anchor hammer, a lifting lug, a high-frequency micro-amplitude vibration device, a main fin, an anchor chain, a power source and a cable, wherein the anchor cover is arranged on the upper part of the anchor shank; the anchor hammer is arranged on the lower part of the anchor shank; the lifting lug is arranged on the surface of the outer wall of the anchor shank; the anchor chain is connected with the lifting lug; the high-frequency micro-amplitude vibration device is arranged inside the anchor shank; the main fin consists of two to four sheets which are uniformly and symmetrically arranged on the surface of the outer wall of the anchor shank; the power source supplies power to the high-frequency micro-amplitude vibration device through the cable; and the cable is connected with the power source and the high-frequency micro-amplitude vibration device through an outer cover. The embedment anchor has good holding power and underwater anchor weight ratio under different submarine sediment, can rapidly hold seabed, and is little in windlass tension needed in the process of raising anchors.

The invention discloses a phosphogypsum based plastering gypsum, and relates to a plastering material for a building wall. The phosphogypsum based plastering gypsum mainly comprises 75 to 95 percent of phosphogypsum based building gypsum, 1 to 3 percent of sierozem powder, 0.1 to 0.5 percent of retarder, 1.1 to 5.5 percent of composite water retention agent, 0.3 to 1 percent of ethylene-vinyl acetate copolymerized latex powder, and 0 to 20 percent of stuffing. The phosphogypsum based plastering gypsum effectively improves water retention property and lowers cost by adopting the combination of cellulose ether water retention agent and bentonite, effectively adjusts settling time and prolongs operable time by adopting the retarder, improves construction property, cohesive property and cracking resistance by doping the stuffing and the latex powder, and reduces adverse effects of impurities on the strength of plastering gypsum by adding the sierozem powder. The phosphogypsum based plastering gypsum has the advantages of good workability and construction property, long operable time, high breaking resistance, compression resistance and adhesion strength, good volume stability, good cracking resistance and lower cost, and can be used for a plastering layer of the building wall.

An insulting film is modified by subjecting the insulting film to a modification treatment comprising a combination of a plasma treatment and a thermal annealing treatment. There is provided a method of enhancing the characteristic of an insulating film by improving deterioration in the characteristic of the insulating film due to carbon, a suboxide, a dangling bond or the like contained in the insulating film.

The invention discloses a resin composition which comprises the following solids by weight: (a) 100 parts of a bismaleimide resin prepolymer, (b) 5-80 parts of cyanate ester, (c) 0-50 parts of a flame retardant and (d) 0-65 parts of inorganic filler, wherein the bismaleimide resin prepolymer is obtained by carrying out reaction on an allyl compound and bismaleimide resin and the ratio of bismaleimide resin and allyl compound by weight is 100: (10-120). According to the resin composition disclosed by the invention, by adopting siloxane containing allyl at the tail end as a modifier of bismaleimide resin and limiting the content of siloxane in the modifier, unreacted siloxane resin is not generated in reaction, so that the advantages and characteristics of siloxane resin can be fully exerted and the interlaminar adhesive force at the high temperature is greatly improved. Moreover, the thermal expansion properties of the solids are optimized, so that the resin composition satisfies the requirements on high precision electronic substrate materials.

The invention discloses a granular heat-preserving covering flux for hot metal in steelmaking, and relates to a treatment agent added into a ladle for preserving heat on the surface of hot metal for steelmaking. The granular heat-preserving covering flux is characterized in that: the heat-preserving covering flux is prepared from expanded vermiculite, wollastonite, bauxite, iron ore concentrate and coke powder, and comprises the following components in percentage by weight: 30 to 35 percent of SiO2, 15 to 21 percent of (CaO+MgO), 7 to 12 percent of Al2O3, 3 to 5 percent of Fe2O3, 15 to 20 percent of C, and the balance of impurities; and the raw materials are ground, sieved, mixed, mixed and stirred, dried, cooled, and weighed and packaged at normal temperature and normal pressure. The granular heat-preserving covering flux has the advantages that: the granular heat-preserving covering flux has good slagability and spreadability, is conveniently adsorbed by inclusion, contains a heat-generating agent and an oxygen supplying agent so as to facilitate melting per se and reduce iron sticking and ladle sticking; the expanded vermiculite and the wollastonite regulate components of the heat-preserving covering flux, and have expanding and heat insulating functions, and good heat preservation property; the MgO regulates the alkalinity and reduces the adhesion of the heat-preserving covering flux with a ladle lining so as to facilitate cleaning slag in the ladle; and the heat-preserving covering flux is granular and greatly reduces dust pollution.

The invention provides a catalyst for preparing a high-quality gasoline fraction by virtue of syngas high selectivity and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 1-30% of metallic cobalt, 0.01-5% of assistant elements and the balance of molecular sieve. The catalyst has good selectivity to isoparaffin with 5-11 carbon atoms and quite low selectivity to the waxy hydrocarbons with more than 20 carbon atoms, so that the catalyst can be used for preparing high-quality gasoline fuels, and the catalyst carbon deposition can be avoided or obviously reduced. In addition, the invention further provides the preparation method of the catalyst.

The invention provides a BAOSHEREX (Baosteel-Shenghua high efficiency smelting reduction) ironmaking process for smelting molten iron by a two-step method, which belongs to the technical field of ironmaking. The steps of the process comprise vertical furnace type prereduction; and additional arrangement of a melt gasification furnace outside a vertical prereduction furnace: oxygen gas and pulverized coal are sprayed from oxygen gas tuyeres which are uniformly distributed in the middle part of a furnace cylinder of the melt gasification furnace, and generated heat meets the requirements of generating molten iron and furnace slag. In the BAOSHEREX ironmaking process, coal accounts for 80-85 weight percent of fuel, only oxygen gas containing 500-600m<3>/t of iron and carbon coke accounting for 15-20 weight percent of the fuel are used for producing high-quality hot molten iron at a temperature of 1350-1480 DEG C, pelletized water granulated slag and high-quality coal gas. The BAOSHEREX ironmaking process has the advantages of high yield, high efficiency, low energy consumption, low emission and low cost.

The invention discloses a baseplate support device used for supporting a baseplate, which comprises a pedestal and a support structure, wherein the support structure is arranged on the pedestal, the support structure comprises a linear member and a plurality of spherical members, the spherical members are connected in series on the linear member, and the spherical members support the baseplate on the pedestal in the point-contact mode. By using the spherical members to support the baseplate on the pedestal in the point-contact mode, the invention can reduce the area in contact with the baseplate, and lower the possibility that the support structure is stuck to the baseplate at high temperature, thereby avoiding the deviation or the bad alignment of the baseplate.

The invention discloses a continuous casting monolithic stopper and a method of manufacture thereof.The monolithic stopper comprises a stopper body, a steel core inserted into the stopper body and a head connected to the lower end of the stopper body, the surface of the steel core is provided with an anchor, the surface of the monolithic stopper is coated with Al2O3 coating; the stopper body is made by casting castables comprising mullite, the head is made by casting castables comprising corundum and sintered mullite, and the monolithic stopper is manufactured by monolithic casting.The stopper obtained herein is good in monolithicity, is free of brick joint and head shedding problems of sleeve brick stoppers, has good thermal shock resistance, high strength and good resistance to molten steel scour erosion, is simple to manufacture and low in cost, and is suitable for stopping a tundish nozzle under low continuous casting, high-oxygen steel continuous casting and skid flow control.