Niobium titanium alloy precision strip, the composition of the niobium titanium alloy precision strip, according to the mass percentage: Ti(46 ~ 57) %, Nb(42 ~ 53) %, the other impurities, the niobium titanium alloy precision strip thickness ≤0.6mm.
A niobium-titanium alloy precision strip manufacturing method comprises the following steps:
Preparation of slab: the slab is made by opening the ingot and forging the slab;
Slab warm rolling: heating the slab, and then a number of hot times warm rolling, the total processing rate of 60 ~ 80%;
Surface treatment: the surface treatment of the slab after warm rolling is carried out to remove the surface oxide and form the cold-rolled billet;
Cold rolling: The special roll is used to cold roll the cold rolled blank. The special roll is a shaped roll with large middle diameter, small edge diameter and excessive smoothness, and the finished product is formed after cold rolling.
Beneficial effects: The niobium-titanium strip prepared by the method of the invention is processed by slab warm rolling to control the processing rate, and then cold rolling by special micro-convex roll, and fine control of the pass deformation and total deformation of the cold rolling, thus forming a thin thickness of less than 0.6mm, and can reach less than 0.09mm under better conditions, and the wall thickness deviation is ≤±0.02mm. Flatness (H/L)≤ 2%, tensile strength ≥460MPa, non-proportional extension strength ≥420MPa, elongation ≥ 15%, with high dimensional accuracy, good surface quality, stable performance and other advantages, fully meet the precision requirements of low-temperature superconducting magnet preparation.
In the composition of niobium titanium alloy precision strip, according to the mass percentage: Ti (46 ~ 57) %, 0.04% or less, C N 0.02% or less, H 0.0045% or less, O 0.10%, or less Fe 0.010% or less, Ta acuities were 0.10%, 0.03% or less, other impurity elements allowance for Nb, niobium described titanium alloy precision strip thickness of 0.6 mm or less, optimization of the 0.12 mm, 0.09 mm, Wall thickness deviation ≤±0.02mm(typical thickness difference between strip middle position and edge), surface roughness ≤0.4μm, flatness (H/L)≤ 2% (flatness algorithm refer to GB/T3630-2017 unflatness measurement method), tensile strength ≥460MPa, non-proportional extension strength ≥420MPa, Elongation ≥ 15%, uniform structure.
