1. Formulation skills of an externally modified silica and abrasive composition containing it

The present skill provides a formulation skill for appearance-modified silica and abrasive compositions containing the same. The present technique provides a formulation technique for an appearance-modified silica, characterized in that it comprises the following steps: reacting silica with a silane coupling agent in a solvent to obtain an appearance-modified silica; the silane coupling agent is octaminophenyl? POSS and/or octachloropropyl? POSS. The surface modified silica prepared by the skill formula can get great progress in the grinding selectivity of polysilicon relative to silicon nitride, improve the grinding rate of Si-containing materials, and significantly improve the grinding rate of ruthenium.

2. A fixed abrasive grinding method for metal flat parts

A fixed abrasive grinding method of metal flat parts, which belongs to the category of mechanical grinding and polishing processing, can solve the phenomenon of abrasive embedding and fixed abrasive grinding disc blocking in the process of plastic metal data grinding processing. The main skill plan used is to use fixed abrasive pads during processing and to slot the pads. The main advantage of this skill plan is that during the machining process, the diamond abrasive grains are held by the grinding pad, so the abrasive grains will not fall off, thus avoiding the phenomenon that the abrasive grains are embedded in the surface of the component during the machining process. Together, the grinding pad is grooved so that the waste chips can flow into the groove instead of staying on the surface of the grinding area during the machining process, thus preventing the grinding pad from blocking.

3, an abrasive water jet and electric spark perforation combination processing machine and its processing methods.

An abrasive water jet and EDM perforation combined processing machine tool and its processing method are used for processing air film holes of turbine blades with thermal barrier coating, characterized in that the machine tool includes a numerical control system, an EDM liquid supply system, an abrasive water jet liquid supply system, an EDM spindle, an abrasive water jet spindle, an EDM perforation processing head, an abrasive water jet processing head, an XY translation operation table, and two rotary tables. The XY translation work table is fixed with the above-mentioned 2 rotary tables, each rotary table is fixed with 2 clamps, the machine tool can be two workpieces on the rotary table together for electric spark perforation processing and abrasive water jet to remove thermal barrier coating processing. By controlling the rotation of the rotary table, the switching between abrasive water jet processing and electric spark perforation processing is realized, and the rotary table is switched between the processing station and the preparation station by moving the working table. This skill can be useful progress with thermal barrier coating turbine blade gas film hole processing efficiency.

4. A metal abrasive processing technology

This skill involves the processing category of metal abrasives, specifically a metal abrasive processing technology, including shell, base, motor, transmission equipment, support plate, rotating tool, cutting table, pill box, wire feeding equipment, tension wheel and wire feeding wheel; The base is arranged in the shell, the motor is installed on the base, and the transmission equipment is arranged on the base, the rotating tool passes through the through hole on the support plate and is connected to the sprocket of the transmission equipment. The steel wire on the wire supply wheel passes through the tension wheel, the wire feeding equipment and the cutting table in turn. This skill is equipped with several rotating tools, which change the one-time cutting of the steel wire into a single and repeated scattered cutting. The time for the rotating tool to cut the steel wire is scattered. The power of the motor is used effectively and the impact vibration on the tool is small, the structural stability of the active connection part of the tool is improved, and the failure rate is reduced.