106results about How to "No surface defects" patented technology

To provide a two-layer flexible substrate having excellent folding endurance, etching properties, and resist adhesiveness with no surface defects.

A copper electrolytic solution containing chloride ions, a sulfur organic compound and polyethylene glycol as additives, and the copper electrolytic solution preferably contains 5 to 200 ppm of chloride ions, 2 to 1000 ppm of a sulfur organic compound and 5 to 1500 ppm of polyethylene glycol. A two-layer flexible substrate having a copper layer formed using the copper electrolytic solution, wherein the MIT folding endurance is 100 or more, and the surface roughness (Rz) of the copper layer is 1.4 to 3.0 μm.

The invention relates to a metal-based composite material which comprises a metal substrate and an MXene material membrane layer, wherein the MXene material membrane layer is arranged on the bottom surface of the metal substrate in a wrapping layer and is of a structural formula Mn+1Xn(Ts); an MXene material is prepared by removing A from a compound of a structural formula Mn+1AXn; in the formula,M, A and X are respectively three different elements; n is a positive integer; Ts is an end sealing group on the surface of the MXene material. The surface of the metal-based composite material provided by the invention is uniformly wrapped with the MXene material membrane layer, the number of sheet layers of the MXene material is only 1-15, the wrapping thickness is smaller than 250 nm, the thickness is uniform, the wrapped surface is smooth and flat, surface defects can be avoided, and the corrosion velocity of the obtained metal-based composite material is very low, that is, is only about0.06% of that of a conventional metal substrate; the invention further discloses a novel method for preparing the metal-based composite material, and by adopting the method, no complex instrument equipment is needed, and the metal-based composite material can be conveniently and rapidly prepared.

The invention relates to a preparation method of 80-100mm extra-thick EH36 steel for offshore wind power. The preparation method comprises the following steps of: converter processing-LF refining-RH vacuum degassing-Ca treatment-continuous casting-casting blank hydrogen diffusion-heating-normalizing rolling-air cooling-steel plate stacking and slow cooling- unstacking, wherein the normalizing rolling adopts two stages of rough rolling and finish rolling; the initial rolling temperature of the rough rolling is 1050-1100 DEG C, the single-pass reduction rate of three passes after the rough rolling is greater than or equal to 15%, and the cumulative reduction rate in the rough rolling stage is greater than or equal to 50%; and the initial rolling temperature of the finish rolling is 860-890 DEG C, the austenite non-recrystallization interval is expanded by adding sufficient Nb, the initial rolling temperature of the finish rolling is above the austenite ferrite equilibrium transformationpoint Ac3, the total rolling pass is 8-12, air cooling is carried out after rolling, Nb is separated out in the steel plate in the air cooling process, and the triangular grain boundary, the grain boundary and the grain interior of ferrite grains are pinned to limit the rapid growth of the ferrite. Therefore, the normalized and rolled EH36 steel plate for offshore wind power is obtained.

The invention discloses a preparation method of a silicon carbon black / natural rubber composite material, belongs to the technical field of composite materials, and solves the problems of high cost, non renewable resources, complex process, difficult processing and uneven dispersion of use of surface modified silica for filling natural rubber in the prior art. According to the method, first purified rice husks are added into a reaction device for pyrolysis to obtain pyrolysis gas and pyrolytic carbon, and after decoking, cooling and separation, tar-free pyrolysis gas and tar-free pyrolytic carbon are obtained; then tar-free pyrolytic carbon gas flow is pulverized, and ball-milled to the average particle size within 10 mu m to obtain silicon carbon black powder, and the silicon carbon black powder is further processed to obtain the modified silicon carbon black powder and silicon carbon black masterbatch; and finally the silicon carbon black / natural rubber composite material can be obtained by mixing and kneading technology. The preparation method has the advantages of low cost, saving energy, environmental-friendliness, full use of renewable resources, and broad application prospects in the rubber field.

A photosensitive resin composition for a black matrix and a black matrix formed with the same are provided. The photosensitive resin composition for a black matrix includes a solvent consisting of 5-30 weight % of a first solvent having a boiling point of 110-159° C., 55-90 weight % of a second solvent having a boiling point of 160-200° C., and 3-15 weight % of a third solvent having a boiling point of 201-280° C., and the first solvent, the second solvent, and the third solvent are an aliphatic compound and use at least one solvent composition selected from a group consisting of alkyl ester, alkyl ketone, alkyl ether, and alkyl alcohol, and thus a uniform thin film having no surface defect can be obtained, and the photosensitive resin composition has an excellent process property while securing a high light shielding property and thus a black matrix pattern having a few defect can be obtained, and is thus useful for a liquid crystal display.

The invention relates to a 2000 aluminum alloy profile and a manufacturing method thereof, and belongs to the field of aluminum profiles. Through the steps of preparation of aluminum alloy raw materials in proportion and casting into an aluminum alloy cast ingot, homogenization, extrusion, softening annealing, cold processing, solution treatment and artificial aging, the processed aluminum alloy material has excellent bendability and high strength, does not have surface defects, can be manufactured without a straightening step, and does not generate surface defects such as orange peel in bending processing. According to the scheme, the straightening step is omitted, so that the manufacturing process is simplified, and the manufacturing cost is saved.

The invention discloses an online detection method and device for plate shape defects of oriented silicon steel finished products, and belongs to the technical field of measuring equipment. The devicecomprises a detection end, a processing end and a network end; the detection end is used for measuring the vertical height from each point on a steel belt to a laser head, calculating the height difference between each point and the reference surface by taking a unit roller way as the reference surface, and drawing steel belt contour data according to the difference value; the processing end is used for processing the steel belt contour data to obtain steel belt full-length contour data, correcting the steel belt contour information into plate shape information, storing the plate shape information into a plate shape database, automatically classifying defects and generating a slitting instruction according to the plate shape information, and uploading the slitting instruction to the network end; and the network end is used for checking the slitting instruction of a to-be-produced steel coil so as to carry out production through the slitting instruction. A non-contact laser contour scanning method is combined with steel strip jitter suppression suitable for oriented silicon steel, contour information is corrected into the plate shape defect information through laser joint correction, the manufacturing cost is low, and a steel strip coating layer cannot be damaged.

The invention relates to a roll pass used to roll a special wide steel band, which belongs to the steel rolling technical field. A roll comprises an upper roll and a lower roll of a final stand of a strip mill, the roll pass of the upper roll or the lower roll is of a long narrow rectangle, and lug bosses of the upper edge or the lower edge of the rectangle are arranged equidistantly. The special wide steel band which meets the requirement can be rolled through the roll pass, and the size and the service performance meet the requirement; and the steel band rolled by the roll pass has reasonable metal flow, good strip shape, and no surface defects.

The invention provides electroslag remelting slag and a production technology thereof, and belongs to the technical field of electroslag remelting. The electroslag remelting slag comprises, by mass percent, 2%-5% of CaF2, 40%-50% of Al2O3, 20%-30% of SiO2, 10%-20% of MgO and 5%-15% of CaO. The producing and machining performance of the electroslag remelting slag is stable and reliable, the content of harmful elements in a steel ingot is obviously reduced, no obvious surface flaws exist in the steel ingot, product components are stable and uniform, the yield of the steel ingot is increased by 15%-20%, and the power consumption of a single furnace is reduced by more than 20%.