2results about How to "Large impact load" patented technology

The utility model provides a compression-resistant core model profile pipe, which relates to the technical field of lightweight walls, and comprises two groups of inner templates, the two groups of inner templates are spliced to form the compression-resistant core model profile pipe, and a plurality of groups of mutually independent cavities are arranged in the core model profile pipe; each inner template comprises a plurality of groups of convex parts which are transversely arranged, the convex parts of the two inner templates are spliced to form a cavity, lug plates are fixed on the two sides of each convex part, and the adjacent convex parts are fixedly connected through the lug plates. And a plurality of groups of cavities are formed in the shell. On one hand, concrete consumption can be reduced, self-weight is effectively reduced, and building load is reduced; on the other hand, the cavity forms an air layer, heat transfer can be remarkably reduced, and efficient heat preservation and heat insulation are achieved. Meanwhile, the effect of blocking sound wave conduction can also be achieved.

This invention provides a method for improving the impact toughness of lawnmower robot blades. The method mainly includes the following steps: preparing a brazing filler metal: the filler metal is NiBSi-Cr3C2 powder, obtained by mechanically mixing NiBSi powder and Cr3C2 powder, with NiBSi powder accounting for 75% of the total mass of the NiBSi-Cr3C2 powder; pretreating the blade substrate, then slowly adding the filler metal to a polyvinyl alcohol aqueous solution and stirring until a paste is obtained; applying the paste to the cutting surface of the blade substrate with a thickness of 0.5 mm, and allowing the coated blade to dry at room temperature for 12-24 hours; then brazing the dried blade using an induction heating device, with the heating temperature controlled at 1000-1150℃; followed by air cooling to room temperature; finally, post-treatment of the blade (heat treatment + quenching + tempering). This invention first applies a coating to the blade substrate using a brazing method, and then performs post-treatment, thereby improving the impact toughness of lawnmower robot blades.