3results about How to "Stable hardness" patented technology

This invention relates to the field of marine engineering materials and surface engineering technology, specifically to a method for preparing Fe-based multi-element alloy powder with amorphous structure forming capability and laser cladding surface strengthening coating materials. The powder's chemical composition, by mass percentage, includes: Cr: 17%–21%, Mo: 15%–19%, W: 10%–15%, Y: 2%–4%, C: 2%–4%, B: 1%–2%, with the balance being Fe. Compared to traditional Fe-based cladding materials, this invention, by introducing elements such as W and Y and optimizing the proportions of the multi-element system, makes the coating more prone to exhibiting a predominantly amorphous structure under rapid laser solidification conditions, and demonstrates stable corrosion resistance and hardness levels in seawater corrosive environments. The powder system and cladding process of this invention can achieve effective surface protection for key components of marine engineering equipment, exhibiting good engineering applicability and application prospects.

The method for improving the hardness of the martensitic stainless steel after heat treatment is suitable for heat treatment in the quenching stage, and comprises the steps that the martensitic stainless steel is subjected to heat treatment at the temperature of 1120 DEG C in the quenching process stage, the hardness of 1Cr12Ni2WMoVNbN after heat treatment can be stabilized by adjusting the quenching temperature, and the cutting efficiency of products in the cutting stage is improved; and the situation that cutting is not easy due to high hardness is avoided.

The application discloses a simulation rubber material and a preparation method and application thereof. The simulation rubber material is prepared from hydrogenated polystyrene-conjugated diene block copolymer with a dendritic random asymmetric long-chain branched structure as a main base material, filling oil, fillers, colorants and the like to form a rubber material. The simulation rubber material has the advantages of meat-like elasticity, high cohesion and tensile strength, constant hardness and strength under changes of medium and low temperature and time, stable use or storage, good oil fixation performance, low oil permeation rate and constant compression deformation resistance, and the comprehensive physical performance is superior to that of a simulation adult health care tool using TPE as a main material.