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71results about How to "Reduce effective thickness" patented technology

Preparation method of titanium-steel single-sided composite board

ActiveCN102773254AReasonable process designLow requirements for welding conditionsMetal rolling arrangementsLayer removalTechnical design
The invention discloses a preparation method of a titanium-steel single-sided composite board, comprising the following processing steps of: (1) respectively selecting two titanium plates with same size and two steel plates with same size and carrying out rust and oxide layer removal treatment on the surfaces of the plates; (2) assembling to form multiple layers of symmetrical combined blank sequentially including a steel plate, a transition layer, a titanium plate, a parting agent, a titanium plate, a transition layer and a steel plate, wherein a gap exists between the periphery of the titanium plate and a barrier strip in the combined blank; (3) compressing the combined blank and respectively welding the barrier strip with a first steel plate and a second steel plate to form a closed cavity among the first steel plate, the second steel plate and the barrier strip, drilling holes in the barrier strip and welding a steel tube in the holes, and communicating the steel tube and the closed cavity; (4) conveying the combined blank into a heating furnace to heat and vacuumizing; (5) sealing the outer end of the steel tube and then conveying the combined blank into a rolling mill; and (6) cutting the combined blank after rolling to obtain the titanium-steel single-sided composite board. The preparation method disclosed by the invention is rational in technical design and low in production cost.
Owner:河南盛荣金属复合新材料有限公司

Manufacturing method of titanium-steel-titanium two-sided composite plate

ActiveCN102773670AReasonable process designLow requirements for welding conditionsSheet steelTitanium
The invention discloses a manufacturing method of a titanium-steel-titanium two-sided composite plate. The manufacturing method comprises the following processing steps: (1) four titanium plates with the same dimension and three steel plates with the same dimension are selected respectively, and rust and oxide layer removal processing is performed on the surfaces of the titanium plates and the steel plates; (2) a multilayer combination blank with three layers of steel plates, four layers of titanium plates and four layers of transition layers is formed through assembly, and gaps are arranged between the peripheries of the titanium plates and barrier strips in the combination blank; (3) the combination blank is pressed tightly and enables the barrier strips to be welded to a first steel plate and a third steel plate so as to enable the first steel plate, the second steel plate and the inner portions of the barrier strips to form a closed cavity, holes are drilled on the barrier strips, steel tubes are welded in the holes, and the steel tubes are communicated with the closed cavity; (4) the combination blank is sent to a heating furnace to be heated and vacuumized; (5) the combination blank is sent to a rolling mill to be rolled after the outer ends of the steel tubes are sealed; and (6) one titanium-steel-titanium two-sided composite plate and two titanium-steel single-sided composite plates are obtained by slitting the combination blank after the combination blank is rolled. The manufacturing method of the titanium-steel-titanium two-sided composite plate is reasonable in design and low in production cost.
Owner:河南盛荣金属复合新材料有限公司

Hard top plate waterflooding pressure relief treatment method

InactiveCN104594898AGrasp the development of cracksStratified in timeDisloding machinesUnderground miningPlate pressureEngineering
The invention discloses a hard top plate waterflooding pressure relief treatment method. The method comprises the following steps of S1, according to a stratum histogram, through combination with a rock mechanical property test, carrying out preliminary analysis on positions and development case of top plate separation fractures, S2, when cutting depth at an open-off cut on the work surface is in a range of 13-17m, drilling a row of holes on the top plate at a certain angle along a work surface advance direction, and observing top plate rock stratum crack development case by a borehole camera, S3, further detecting top board crack development case by a double-head water-plugging device detection system, S4, determining a top plate rock stratum crack development range and depth according to the results of the above three steps, and pouring high pressure water into the cracks by a high pressure water pump so that hard top plate integrity is broken and rock strength is reduced, and S5, after top plate pressure is released, sequentially pushing the work surface and repeating the above processes until work surface exploitation is finished. The method can realize accurate positioning of a pre-cracked top plate position and full utilization of a top plate separation layer crack space and is frees of artificial arrangement of a pre-cracking space.
Owner:SHANDONG UNIV OF SCI & TECH
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