In recent years, the application scope of titanium and titanium alloy products has become more and more widely used, such as aerospace, marine engineering, ships, automobiles, chemicals, electronics, electricity and medical care, etc., and the continuous increase in market demand has gradually accelerated the forging process of titanium alloy and forging technology and The development of technology. The characteristics of titanium alloys are mainly: small density, high tensile strength, high hardness, good corrosion resistance, no magnetic, small thermal elasticity, strong low temperature performance, high thermal strength and long service life. Thermal treatment is an important processing process for making titanium alloys, mainly to obtain the best mechanical performance. The commonly used thermal treatment methods for titanium alloys are annealing, solid solution and timeliness.
1. The annealing can be divided into completely annealing, double annealing, and equivalent heating. The general process is to heat the workpiece to the critical point. After the heat preservation for a period of time, slowly cool down with the furnace (or cooled in sand or lime) to 500 degrees to 500 degrees Here is the heat treatment process for cooling in the air.
2. Soluble solution treatment: dissolves the various phases in the alloy, strengthen solid solution and improve toughness and corrosion resistance, eliminate stress and softening, so as to continue processing.
3. Time processing: The temperature of the refined phase is heated and insulated, so that the enhancement phase precipitates can be precipitated, it can harden and improve the intensity. The timeliness temperature and timeliness can be determined according to the timeliness hardening curve.
