Jiangnan University

Meiping Wu

Xiaojin Miao

Peipei Lu

Xin Liu

Xiu Ye

Hang Wang

Jun Zhang

Quanlong Wang

Yiqing Ma

Chenlong Ma

Shuxin Teng

Chunlei Zhang

Yiwen Chen

Weipeng Duan

Kan Xu

An abrasive water jet nozzle for strengthening, including a chamber, providing a mixing space; and a strengthening mixing assembly, providing a strengthening mixing of water with an abrasive entering the chamber, wherein the strengthening mixing assembly includes a fluid passage and a water stopper block, wherein the water stopper block is located at an eccentric position on one side of the chamber, and an outlet of the fluid passage faces the water stopper block. The provided abrasive water jet nozzle is capable of fully mixing high speed water with the abrasive particles after the high speed water entering the mixing chamber, so as to ensure the uniformity of the strengthening effect, and the formed abrasive water jet is a large circular fan-shaped jet, which can greatly improve the strengthening quality of the abrasive water jet.

Abrasive water jet nozzle for strengthening

The present invention relates to a method for producing an abrasion-resistant coating on surface of a 3D printed titanium alloy component, which belongs to the field of surface modification. The method comprises using spherical TC4 titanium alloy powder as a base material and adopting selective laser melting (SLM) technology to manufacture a 3D printed titanium alloy component in a layer-by-layer stacking manner, using graphene oxide to perform friction-induction treatment, and making the graphene oxide infiltrate into the surface of the TC4 titanium alloy component to obtain a graphene oxide surface coating. The goal of improving the friction and wear performance of the TC4 titanium alloy printed components is achieved. The preparation method is simple, and the steps are easy to operate. Introducing the graphene oxide is beneficial to reduce the generation of wear debris during the friction and wear processes and improve tribological characteristics of the base material.

Method for producing an abrasion-resistant coating on surface of 3D printed titanium alloy components

The present invention provides a method for preparing an ultra high molecular weight polyethylene (UHMWPE) composite material including the following steps: providing a substrate material having medical grade ultra high molecular weight polyethylene powders, drying the substrate material to obtain fully dried UHMWPE powders, and pressing the fully dried UHMWPE powders to form a UHMWPE board; immersing the UHMWPE board into a graphene oxide solution and performing an ultrasonic induction by an ultrasonic processor such that the graphene oxide solution infiltrates into the UHMWPE substrate to obtain an ultra high molecular weight polyethylene composite material with excellent biocompatibility and tribological properties. The graphene oxide can be adsorbed and evenly spread on the surface of UHMWPE substrate by ultrasonic induction to form a lubricating film which can effectively reduce wear.

Method for preparing ultra high molecular weight polyethylene composite materials

The present invention discloses a cutting auxiliary device integrated with clamping and blanking functions includes a positioning and loading unit, a clamping unit and a supporting unit. The supporting unit and the clamping unit can slide left and right on the platform of the positioning and loading unit through the slide block and slide groove structure. The supporting unit and the clamping unit are connected through an adjustable push rod with a scale bar; The board is placed on the positioning platform, and the adjustable push rod is pushed to move the supporting unit and the clamping unit to fix the board again for cutting. After completion, the handwheel is turned to make the clamping platform rotate such that the material is transferred into the material receiving container.

Processing auxiliary device integrated with clamping and blanking functions

Growing community of inventors

Wuxi, China

Meiping Wu