2015年2月20日星期五

Cutting Features

Cutting Features
HB350 hardness greater than titanium fasteners metric machining particularly difficult, less than HB300 is prone to stick a knife phenomenon, but also difficult to cut. However, only one aspect of the hardness of titanium machining difficult, the key is the combined effect of its machinability of chemical, physical and mechanical properties of titanium itself between
(1) stress relief annealing: The aim is to eliminate or reduce the residual stresses generated during machining. Prevent chemical erosion and reduce distortion in some corrosive environments.
(2) complete annealing: The purpose is to obtain good toughness, improve the processing performance, is conducive to further processing and to improve the stability of the size and organization.
(3) solution treatment and aging: The purpose is to increase its strength, α β titanium alloy and stability can not be strengthened heat treatment is carried out only in the production of annealing. α + β titanium pipe fittings and titanium alloys metastable β phase can contain small amounts of α by solution treatment and aging of the alloy further strengthened.
In addition, in order to meet the special requirements of the workpiece, the industry also uses double annealing, isothermal annealing, β heat treatment, deformation and heat treatment of metal heat treatment process.


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