38results about How to "Does not significantly increase production costs" patented technology

The invention relates to drill collar steel and a preparation method thereof. The drill collar steel comprises the following components based on the total weight of drill collar steel: 0.41-0.47wt% of C, 0.15-0.3wt% of Si, 0.95-1.2wt% of Mn, 0.95-1.2wt% of Cr, 0.15-0.3wt% of Mo, 0.02-0.04wt% of Al, 0.01-0.03wt% of Ti, less than or equal to 0.02wt% of P, less than or equal to 0.015wt% of S, less than or equal to 0.2wt% of Ni, less than or equal to 0.2wt% of Cu, less than or equal to 0.05wt% of Sn, less than or equal to 0.0002 wt% of H, less than or equal to 0.007wt% of N and the balance of Fe;and T[O] is less than or equal to 0.0020wt%, and the A,B,C and D impurities are less than or equal to 1.5 levels. By using the preparation method, the problem that the strength of the drill collar steel is not matched with plastic toughness is solved.

The invention discloses an electrolyte for a lithium ion battery and a preparation method thereof. The electrolyte consists of a main electrolyte, an electrolyte additive, a main solvent and a solvent additive. The preparation method comprises the following steps of: A. under the condition of vacuum or inert gas protection, respectively mixing the main solvent and the solvent additive with a drying agent (lithium oxide) which is dried to be at constant weight in advance, and mixing and filtering to remove the lithium oxide and lithium hydroxide sediment; B. uniformly mixing the dried main solvent and the dried solvent additive from the step A; and C. adding a main electrolyte mixture and an electrolyte additive into the solvent mixed in the step B, and agitating and dissolving under the vacuum and inert gas protection to prepare a solution with the mass mol concentration of the main electrolyte of 0.5-1.5 M. The electrolyte has the advantages of abundant resources, low price and no toxin, effectively improves the work temperature range of the battery and effectively prolongs the circulating service life of the battery, so that various types of the lithium ion batteries are manufactured; and the electrolyte is particularly suitable for manufacturing a lithium ion power battery with high power capacity and high multiplying power charging and discharging capacity.

The invention discloses a method for strengthening sintering of high-proportion iron ore concentrate. The sintering raw material is divided into two materials and then palletized. The first material comprises a part of the iron ore concentrate, quick lime and coke powder separated from the sintering raw material, first-stage palletizing is carried out on the first material, then second-stage palletizing is carried out on the first material and the second material, and the second material comprises a part of the iron ore concentrate, quick lime, coke powder, ore fines, lime stone, dolomite and return fines. By distributing the concentrate, the quick lime and the coke powder in the two materials reasonably, the purposes of palletizing strengthening and sintering mineralizing are achieved. For sintering of an iron mine with the iron ore concentrate accounting for 50-70 percent of the total mass of the iron core, after the strengthening technology is utilized, the utilization factor of a sintering machine is improved by 0.05-0.3t/(m<2>.h), the sinter yield is improved by 1-4 percent, the drum strength is improved by 0.5-4 percent, and the output index and the quality index of sintering of the high-proportion iron ore concentrate are improved.

The invention discloses a subzero temperature-gust quick semi-unfreezing process of frozen platy meat products. The subzero temperature-gust quick semi-unfreezing process comprises the following steps: loading the frozen platy meat products on unfreezing racks, placing the unfreezing racks in a subzero temperature unfreezing room with the room temperature being not higher than -6 DEG C, monitoring the center temperature and the surface temperature of the meat products by setting four frozen meat products as references, and enabling the center temperature of the frozen platy meat products to be -8+/-1 DEG C by taking the center temperatures and the surface temperatures of the references as control nodes of a gust opening/closing procedure and at the air speed of (3-6)+/-0.9m/s during opening, so that the state of internal/external balanced semi-unfreezing is achieved under the subzero temperature-gust unfreezing condition that the center/surface temperature difference is 0.5-1.5 DEG C. The subzero temperature-gust semi-unfreezing process has the positive effects that 1, the frozen platy meat products can quickly achieve the unfreezing state needed for quickly-frozen prepared foods; 2, the center/surface temperature difference after semi-unfreezing is less and the internal/external unfreezing degree is balanced; 3, the subzero temperature-gust quick semi-unfreezing process can be applied to quick unfreezing of large batches of frozen meat products; and 4, the energy consumption of semi-unfreezing is less and the production cost cannot be greatly increased.

The invention discloses a steel for drilling tools and a method for smelting steel for drilling tools. On the basis of the total weight of the steel for drilling tools, the steel comprises 0.4-0.49 wt% of C, 0.15-0.37 wt% of Si, 1-1.3 wt% of Mn, 1-1.3 wt% of Cr, 0.2-0.3 wt% of Mo, 0.02-0.04 wt% of Al, 0.25-0.5 wt% of Ni, at most 0.015 wt% of P, at most 0.015 wt% of S, at most 0.2 wt% of Cu, at most 0.05 wt% of Sn, at most 0.05 wt% of As, at most 0.0002 wt% of H, at most 0.009 wt% of N and the balance of iron. The T[O] content in the steel for drilling tools is at most 0.002 wt%. The steel for drilling tools disclosed by the invention has higher strength, ductility and toughness than the steel for drilling tools provided by the prior art. Thus, the invention provides the steel for drilling tools with high strength, high toughness and favorable fatigue resistance on the premise of not greatly increasing the steel product production cost.

The invention provides a metal wire manufacturing method of a flexible substrate. The method comprises a step of preparing a polyimide solution containing bubbles, a step of coating a substrate with the polyimide solution containing bubbles, a step of carrying out baking-curing and forming a polyimide layer with concave holes on the substrate, a step of depositing a metal layer on the polyimide layer, and a step of patterning the metal layer and forming wavy metal wires on the polyimide layer. According to the method, through simple steps, the wavy metal wires are formed on the substrate, the formed metal wires can release the stress of the formed metal wires in the bending of the flexible substrate, and the bending resistance and reliability of the flexible substrate are improved.

The invention provides a preparation method for a solar battery emitting electrode, comprising the steps of (A), texturing, diffusing and etching a silicon wafer to obtain a pretreated silicon wafer; and B) oxidizing the pretreated silicon wafer by ozone to form an oxide layer on the surface, and then removing the oxide layer by a hydrofluoric acid solution to obtain the solar battery emitting electrode. Compared with the prior art, the preparation method uses ozone to oxidize the pretreated silicon wafer to form the oxide layer on the surface at the normal temperature, and then the hydrofluoric acid solution is used to remove the oxide layer, so that the dead layer of the emitting electrode can be effectively removed, the short-wave spectral response of the solar battery is accelerated, and the battery efficiency is improved; and in addition, the preparation method is simple and controllable without dramatically increasing the production cost, so that the preparation method is suitable for large-scale production.

Disclosed is a treatment method for controlling browning of fresh-cut taros. The method comprises the following operation steps that the taros are peeled, cut into halves, blanched with hot water at 60-100 DEG C for 20-60 seconds, fished out and drained; then citronella hydrolat is sprayed onto the surfaces of the fresh-cut taros, moisture is drained off, and the taros are packaged with a 0.01mm polyethylene plastic thin film and stored in a constant-temperature box at 4-8 DEG C. The method has the advantages that a chemical anti-browning agent is not adopted, the method is safe and efficient,and the shelf life at least can be prolonged by 9 days; the operation is simple and easy to implement, the production cost is not significantly increased, and the method has significant economic benefits.

The invention provides a method for casting an antiwear shot blasting machine blade. The method comprises the following steps that S1, green sand is utilized for carrying out modeling on a casting of the antiwear shot blasting machine blade, and dry sand is utilized for carrying out core making on the casting of the antiwear shot blasting machine blade; S2, casting lower surface parting of the antiwear shot blasting machine blade is selected, and a bottom gating system is selected; S3, the dimensional tolerance, the casting weight tolerance, the shrinking percentage, the pattern draft and the air outlet hole dimension during casting are determined; S4, an alloy is subjected to smelting and casting; and S5, after the casting is put in the temperature being 900 DEG C for heat preservation for 0.5 h after casting is carried out, the casting is taken out of a furnace to be cooled, and the casting is cooled after being subjected to heat preservation tempering for 0.5 h at the temperature being 220 DEG C. The method for casting the antiwear shot blasting machine blade has the following beneficial effects that by means of the method, a structure growing perpendicularly to the direction of the wear face of the blade can be obtained, on the premise of no greatly improving production cost, the wear resistance of the structure is greatly improved, and application is wider.

The invention discloses an alloying method for inducing an icosahedron quasicrystal phase to be subjected to in-situ synthesis to reinforce cast aluminum-lithium alloy, and relates to the method for inducing the quasicrystal phase to be subjected to in-situ synthesis to reinforce the cast aluminum-lithium alloy. The method aims to solve the technical problems that in the existing aluminum-lithium alloy casting process, a large number of delta'-Al3Li particles are separated out, the coplanar slippage tendency is intensified, the stress concentration phenomenon at the grain boundary is more obvious, and the obdurability of the alloy is obviously reduced. The invention relates to the alloying method for inducing the quasicrystal phase to be subjected to in-situ synthesis to reinforce the cast aluminum-lithium alloy, the separation-out number of Al3Li reinforcing particles in the quasicrystal reinforced cast aluminum-lithium alloy is inhibited, meanwhile, the separation-out number of icosahedron quasicrystal phases T2-Al6CuLi3 is greatly increased, and the product of strength and ductility of alloy is improved by more than five times.