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50results about How to "Production process is feasible" patented technology

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Process for industrial production of oligochitose and chitooligose

InactiveCN1401652ASmall molecular weightHigh molecular weightOligosaccharidesFreeze-dryingVacuum drying

An industrial process for preparing oligochitose or chitoligose by degradating chitosan with complex enzyme includes specifically opening the beta (1,4) glycoside bond of chitosan with complex enzyme, separating out oligothitose in alkaline condition, freezing, centrifugal dewatering, vacuum drying, superfiltering for removing enzyme, nano-filtering for dewatering and freeze drying. Its advantages are high quality of product and low cost.

Owner:EAST CHINA UNIV OF SCI & TECH

Method for laser hardening gear part

ActiveCN102021568AImprove wear resistanceImprove anti-corrosion performanceMetallic material coating processesLaser beam welding apparatusWear resistantLaser scanning

The invention discloses a method for laser hardening gear part, which comprises the following steps: 1) machining a gear part according to the prior art, wherein the thickness of the gear is required to be 1.5 mm less than the design value; 2) laser scanning the gear part by a laser hardening equipment with a laser output power of 5 kw, a scanning speed of 480 mm / min, and a powder feed rate of 18 g / min, performing the powder feeding and the laser cladding simultaneously in one work step, and cladding the gear surface with metal powder containing wear resistant materials to form a laser hardening layer with a cladding thickness of 3 mm and with polishing allowance reserved, wherein the laser beam is a broadband rectangular spot of 15X2.5; the metal powder material comprises, by weight: 48.4% of Fe, 0.077% of C, 0.85% of Si, 0.368% of Mn, 17.02% of Cr, 24.4% of Ni, and 2.68% of Mo; 3) processing the laser-clad mating surface to achieve a design size. The laser-clad gear of the present invention has an average micro-hardness of HV800, a Rockwell hardness of HRC65, and the wear resistance of the gear surface is enhanced.

Owner:SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD +1

Ferritic stainless steel with good wrinkle resistance and production method thereof

InactiveCN101845595AGood wrinkle effectProduction process is feasibleWrinkle skinTransition temperature

The invention relates to ferritic stainless steel with good wrinkle resistance and a production method thereof. The ferritic stainless steel comprises the following components by weight percentage: less than or equal to 0.02 percent of C, less than or equal to 0.02 percent of N, 0.10-0.50 percent of Si, 0.10-0.50 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.01 percent of S, 16-30 percent of Cr, less than or equal to 1.00 percent of Ni, 0.15-0.40 percent of Nb, less than or equal to 16 percent of Nb / (C+N), less than or equal to 0.010 percent of O, less than or equal to 1.00 percent of Cu and the rest being Fe and inevitable impurity elements. Since the stabilization element Ti which can damage the surface quality of continuous casting and increase the brittle transition temperature is not added, and only the stabilization element Nb is added, the invention can reduce the quantity of casting blank repair and the strip breakage risk, improve the surface quality and overall performance, eliminate the wrinkle of the surface of the ferriticstainless steel cold-rolled plate with a medium and high Cr content, reduce the wear and repair loss during the production process, and decrease the production cost.

50results about How to "Production process is feasible" patented technology

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