The standard requirements of titanium alloy fasteners. Titanium alloy fasteners generally require solution aging heat treatment to ensure that they meet the shear strength of 660 MPa and the tensile strength performance requirements of 1100 MPa. Fasteners made of titanium alloy should be inspected in detail, in addition to observing whether there is damage to the appearance, but also to its mechanical properties and metallurgical inspection of titanium alloy fasteners have strict material standards as well as quality, performance Standards and requirements, titanium alloy fasteners processing technical conditions with AMS4967 standard (wire, annealed, forgings and rings, heat treatable titanium alloy bar) in line with the relevant requirements, the standard in the material tolerances, dimensions, metallurgy, appearance, defect control, as well as mechanical properties and other aspects have clear standard requirements and performance requirements.
Titanium alloy fasteners in the process of use and mechanical processing of the problems.
1. Corrosion performance. In the installation of titanium alloy fasteners are easy to form gaps, and thus between metal and metal or metal surface coating cracks, some easily affected metal materials will be affected by a certain amount of corrosion titanium alloy material corrosion resistance is the main reason for its surface has a protective oxide film.
2. problems in the turning process. In the titanium alloy for turning process, the main problems are serious tool wear, cutting temperature is too high, and cutting rebound and other reckless. Generally speaking, in reasonable mechanical processing conditions, the turning process is not difficult, if it is for mass production, continuous cutting, and metal removal of a relatively large amount of cutting, you need to use carbide tools; and in forming cutting or cutting off the need for reasonable adjustment of steel tools, if necessary, the use of metal ceramic tools
3. problems in boring processing. Boring is a fine machining, in the process of boring titanium alloy products, in the titanium alloy milling process, because the tool is only partially in the milling state during each revolution, thus easily lead to tool wear or breakage phenomenon, in the next milling stroke, seriously affect the roughness of the milling surface thus in order to reduce the occurrence of the above phenomenon, the need for the boring process Improve and perfect, improve the quality and level of mechanical processing of titanium alloy fasteners.
