6 results about "Zinc white" patented technology

The invention provides a zinc-copper-nickel-copper smelting deslagging agent and a preparation method and a use method thereof. The zinc-copper-nickel-copper smelting deslagging agent comprises the following raw materials in percentage by mass: 5-15% of calcium fluoride, 20-30% of sodium carbonate, 5-15% of sodium fluoride, 10-20% of sodium hexafluoroaluminate and the balance of borax. Compared with the prior art, the zinc-copper-nickel-copper slag remover prepared by mixing the raw materials can effectively reduce impurities to be less than 0.14% of Fe, less than 0.005% of Pb and less than 0.003% of Si in the smelting process, the impurity components are obviously reduced, the number of times of component adjustment and unqualified sampling is reduced, impurities mixed in a casting blank are reduced, and finally the metal purity and the casting quality are improved. Meanwhile, loss of zinc and nickel is reduced to the maximum extent; and adverse effects on the zinc-copper-nickel alloy are avoided.

The invention discloses a zinc-white copper alloy, which comprises, by weight percentage, 48.0-53.2 wt% of Cu, 5.8-8.0 wt% of Ni, 1.0-3.0 wt% of Mn, 1.0-2.8 wt% of Pb, 0.0001-0.3 wt% of Fe, and the balance being Zn and unavoidable impurities. Twins are contained in the microstructure of a cross section of the zinc-white copper alloy, and the average width of the twins is 0.5-5 μm. The present invention can achieve a yield strength of zinc white copper of 520 MPa or greater, a tensile strength of 580 MPa or greater, a hardness of HV 155 or greater, and an elongation of 8 to 15%. The weight loss rate after corrosion for 48 hours is 0.02% or less. The alloy can be repeatedly bent 180° without breaking within 6 bends, thus meeting processing and use requirements. That is, after the alloy is stamped into a sample blank, the sample blank has no cracks on its surface and a dimensional tolerance of 0.02 mm or less. When a load of 1.0 Nm is applied to the sample blank, the deformation angle is less than 5°, and the drop test requirements are met.

The application discloses a kind of anti-cracking ceramic glaze water, including sodium feldspar, potassium feldspar, modified kaolin, dolomite, zinc white, barium carbonate, quartz, clinker;The ethylene-1-octene copolymer of the application has good flexibility, tensile property and tear strength, the viscosity strength is higher, the ethylene-1-octene copolymer and polyethylene cooperate, further enhance the binding force between raw materials, in turn help to enhance impact resistance and anti-fracture tensile property, while under the action of itaconic acid, itaconic acid as graft monomer, with ethylene-1-octene copolymer is reacted, to introduce itaconic acid group on ethylene-1-octene copolymer molecular chain, this grafting reaction can enhance its bonding property, so that the setting of modified kaolin can improve the anti-cracking strength of ceramic glaze water.

The invention discloses a method for simultaneously determining the contents of copper and nickel elements in zinc-copper-nickel alloy, which comprises the following steps: firstly, selecting 3-5 series of standard substances with the known contents of 55.0%-75.0% of copper and 12.0%-18.0% of nickel to form a concentration gradient, and then crushing a sample with the unknown content and the selected series of standard substances into particles with the particle size of less than 20 meshes; then respectively preparing a standard substance solution and a to-be-detected sample solution, then adjusting working parameters of an inductively coupled plasma emission spectrometer, carrying out data acquisition on emission spectrum light intensity of copper and nickel elements in the series of standard substance solutions, drawing a standard working curve of each element according to a corresponding relation between the element content and the emission spectrum light intensity, and calculating the content of the copper and nickel elements in the to-be-detected sample solution. And substituting the light intensity of the emission spectrum of the copper and nickel elements of the to-be-detected sample solution collected by the instrument into the standard working curve, and calculating the content of the copper and nickel elements in the sample with unknown content. The determination method provided by the invention solves the problem of sample solution preparation when the ICP spectrometer is used for determining the zinc-copper-nickel alloy.

The application discloses a lead-free environment-friendly easy-to-cut zinc white copper, and each component content of the zinc white copper includes Cu: 42-46 wt%, Ni: 12-16 wt%, Mn: 4-6 wt%, Sb: 1.0-2.2 wt%, Fe: 0.01-0.2 wt%, Sn: 0.1-0.5 wt%, and the rest is Zn and inevitable impurities; the structure of the lead-free environment-friendly easy-to-cut zinc white copper includes Mn2Sb phase, the average distribution density of the Mn2Sb phase is greater than or equal to 4000 / mm 2 , and the average distribution density of the Mn2Sb phase with a particle size greater than or equal to 5 mu m is less than or equal to 200 / mm 2 . The zinc white copper has excellent cutting performance, good cold and hot working performance and corrosion resistance under the premise of not using traditional easy-to-cut elements such as Pb, Bi, Si, P and the like, through the synergistic effect of Sb and Mn, Fe and Sn. The application further discloses a preparation method and application of the zinc white copper.