5results about How to "Promote nucleation" patented technology

This invention relates to the field of welding technology, specifically to a method for strengthening the heat-affected zone (HAZ) of thick low-carbon, low-alloy ship steel plates that withstand high heat input welding; more specifically, it relates to a method for strengthening the HAZ of thick low-carbon, low-alloy ship steel plates that withstand high heat input welding and its application. This invention uses a first flux as a printing material, which is melted onto the surface of a steel substrate via arc printing to obtain a steel billet. The first flux is mainly composed of CaF2, SiO2, MnO, and TiO2 in a mass ratio of 25–32:25–32:25–32:4–25. The steel billet is then rolled and welded. This method has advantages such as simple operation, low cost, short time consumption, and high production efficiency. Furthermore, the steel heat-affected zone prepared by this method has a large number of fine, dispersed inclusions and fine grains, greatly improving the mechanical properties of the heat-affected zone.

This invention discloses a process for manufacturing an impact-resistant and wear-resistant ultra-hard metal-based composite layer and a straightening roller, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer; both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, are staggered, and have at least one set of intersection nodes between them, and are located inside the alloy working layer. By introducing V and Nb into the original formulation and precisely adjusting the proportions of components such as Co, Ni, Cr, C, B, and Si to meet the requirements, the composite layer retains high hardness and good oxidation resistance, impact resistance, thermal shock resistance, and corrosion resistance at high temperatures, improving the spraying process performance of the alloy coating and increasing the deposition rate.

This invention discloses an anti-oxidation and wear-resistant composite coating for an alloy roller surface and its manufacturing process, comprising an alloy groove coating layer one, an alloy groove coating layer two, and an alloy working layer. Both alloy groove coating layer one and alloy groove coating layer two have sinusoidal structures, circumferentially staggered on the alloy roller surface. At least one set of intersection nodes is formed between adjacent alloy groove coating layers one and two, and anchoring nodes are provided at the intersection nodes. Alloy groove coating layers one and two are located inside the alloy working layer. This invention improves the interlayer bonding strength and reduces the thickness by improving the structure, materials, and process, while also enhancing impact resistance, thermal shock resistance, and corrosion resistance to a certain extent, and maintaining high hardness at high temperatures.

This invention belongs to the field of magnetic functional materials technology, specifically relating to an amorphous nanocrystalline ribbon and its preparation method. The amorphous nanocrystalline ribbon is composed of the following raw materials in the indicated mass percentages: Nb 5.6-6.5 wt%, Si 9.5-10.5 wt%, B 1-2 wt%, Cu 0.5-1 wt%, Co 0.1-0.2 wt%, Zr 0.05-0.1 wt%, rare earth elements 0.4-1.5 wt%, high-entropy oxide 0.5-1.0 wt%, with the balance being Fe. The high-entropy oxide is prepared by adding ferric chloride, cobalt chloride, nickel chloride, manganese chloride, and scandium chloride to diethylene glycol, heating and stirring under sealed conditions, followed by centrifugation, washing, drying, and calcination to obtain the high-entropy oxide. The amorphous nanocrystalline ribbon prepared by this invention exhibits high magnetic permeability, low coercivity, and high stability within the temperature range of -40℃ to +150℃.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.