3results about How to "No chipping" patented technology

This invention relates to a wear-resistant, long-life shot peening agent. The shot peening agent, by mass percentage, comprises: C: 0.55-1.0%, Si: 0.25-0.65%, Mn: 5.8-10.5%, Cr: 3.0-7.0%, Ni: 5.6-8.4%, B: 0.0015-0.004%, P: less than 0.05%, S: less than 0.03%, with the balance being Fe and unavoidable impurities. The shot peening agent is prepared by water atomization or gas atomization of molten steel with the above composition. The shot peening agent is then heated to 820-900℃ and held, followed by quenching to room temperature at a quenching cooling rate of V1≤V≤V2. The unit is ℃ / s, where: V1=8.58*ln(103.8-11.27*[B]-5.78*[Mn]-3.16*[Cr]-1.88*[Si]-1.05*[Ni]-2.14*[C])+13.7; V2=37.5+3018*[B]-1.5*[Mn]+5.4*[Cr]-2.1*[Ni]-6.2*[Si]+37.9*[C]; where [C], [Si], [Mn], [Cr], [Ni], and [B] represent the mass percentage content of C, Si, Mn, Cr, Ni, and B, respectively.

This invention provides a method for regenerating honeycomb activated carbon, comprising: (1) chemical cleaning: ultrasonic cleaning using a composite cleaning solution containing organic acid and low molecular weight polyethylene glycol; (2) structural repair: immersing the cleaned activated carbon in a repair solution containing carbon precursor and high molecular weight polyethylene glycol; (3) microwave regeneration: microwave heating under non-oxidizing gas protection, followed by cooling to obtain regenerated honeycomb activated carbon. This invention improves cleaning efficiency by using low molecular weight polyethylene glycol to assist the cleaning solution in entering hydrophobic micropores; and selectively retaining high molecular weight polyethylene glycol in microcracks and mesopores through a compounding process with the carbon precursor, resulting in in-situ deposition to fill microcracks and repair structural defects after carbonization. This invention features low regeneration temperature, minimal damage to the honeycomb structure, and a regeneration recovery rate of over 90% for specific surface area and over 88% for axial compressive strength, significantly extending the cycle life of the honeycomb activated carbon.

The invention discloses a high-speed laser processing device and method for ceramic substrate micropores, and aims to solve the problem of low ceramic substrate micropore processing efficiency. The device is characterized in that a laser outputs laser pulses to a light beam forming unit, the laser pulses are expanded and collimated and then reach a focusing unit comprising a galvanometer scanning head, and the focusing unit is used for focusing the ceramic substrate micropores; the galvanometer scanning head is connected with a high-speed micro-motion compensation mirror module, laser pulses reach a motion platform which continuously moves at a constant speed in the machining direction through a focusing unit, a sample table for bearing a workpiece is arranged on the motion platform, and a real-time position feedback device is arranged on one side of the motion platform. And the position feedback device, the galvanometer scanning head, the high-speed micro-motion compensation mirror module and the laser are in signal connection with a control system, so that a laser pulse focus is always aligned with a target hole site. Real-time synchronous laser machining of the platform in a high-speed continuous motion state can be achieved, the machining efficiency reaches ten thousand holes in a second level, and meanwhile high precision and high quality of micropore machining are guaranteed.