Efficient precise grinding process for titanium alloy material

Abstract

The efficient precise grinding process of titanium alloy workpiece in a conventional apparatus includes the following steps: trimming super high speed resin adhered diamond grinding wheel or ceramic bonder adhered CBN grinding wheel to outer jiggling within 5 micron and sharpening; performing real-time dynamic balancing of the grinding wheel with a dynamic balancing system to unbalance amount within 0.1 micron; and grinding titanium alloy workpiece in the conditions of water-base cooling liquid supplying pressure of 7-9 MPa, grinding wheel grinding rate of 3.3-180 cu mm / mm.s, grinding wheel linear speed of 60-150 m / s, grinding depth of 0.1-1.8 mm and workpiece feeding speed of 1-6 m / min. The present invention has high titanium alloy workpiece grinding efficiency, low cost and high grinding quality.

Description

technical field [0001] The invention relates to a high-efficiency precision grinding process for titanium alloy materials. Background technique [0002] Due to its high specific strength, excellent corrosion resistance, non-magnetism, good heat resistance, and high fatigue strength, titanium alloys have been widely used in aviation, aerospace, navigation, petroleum, chemical and other industrial sectors. With the continuous expansion of the application range of titanium alloy materials, the types of titanium mechanical equipment and parts are also increasing, and people's requirements for processing accuracy and processing efficiency are also getting higher and higher. If titanium alloy materials are processed by ordinary grinding methods, the efficiency is low and the cost is high, and increasing the amount of grinding will often cause burns and cracks on the surface of the workpiece, and the processing quality is difficult to guarantee. Titanium alloy materials have the f...

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Problems solved by technology

[0004] 2. The grinding surface quality of titanium alloy materials is not easy to control

Because the titanium alloy itself has the characteristics of stickiness, toughness and high chemical activity, it is easy to adhere to the grinding wheel during the grinding process, resulting in increased grinding force and increased grinding temperature.

The high grinding temperature makes the chemical reaction between titanium alloy and abrasive grains, abrasive grains and air easy to occur, and 70%-80% of the high temperature in the grinding area is not easy to be exported to the workpiece, and the tension generated during the grinding process Stress and surface pollution layer make the parts prone to deformation, burns and cracks, and the surface roughness is also difficult to guarantee, thus affecting the practical application of titanium alloy parts

[0005] 3. The production efficiency of titanium alloy parts is low

In the past, most of the research on high-efficiency deep grinding focused on ordinary metal materials, and the high-efficiency deep grinding of difficult-to-machine materials was also limited to simulation tests. Therefore, in-depth and systematic research on how to use high-efficiency deep grinding technology to achieve low-cost and high-quality processing of titanium alloy materials , is an important technical issue worth discussing in the research of titanium alloy grinding

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