Method for improving board quality and yield of coiled materials in annealing process

Abstract

The invention provides a method for improving the board quality and the yield of coiled materials in an annealing process. The method comprises the following steps: a, utilization of a coil core of a spring steel band fixing titanium coil: horizontally placing a cold-rolled titanium coil to be annealed, mounting a lock catch on the steel spring steel band, supporting the steel spring steel band in the coil core, reversely pushing the steel band through a separable bundling machine, and fixing the lock catch through a clamp in order to maintain the original shape of the steel band; b, annealing; and c, removal of the spring steel band: cooling the titanium coil to the room temperature after the annealing, and then removing the spring steel band. The method has the characteristics and effects that (1) no crator is generated on the loops of boards, in the annealled coil core, of the cold-rolled titanium coil by carrying out the method, thus the board quality cannot be influenced, the board is no different from other boards, and the board quality is high; (2) the yield of the titanium coil in production can be improved by the method; and (3) the method is simple, easy to operate, and high in practicability.

Description

technical field [0001] The invention mainly proposes a solution to the problem of core collapse in the annealing process of new thin-gauge coils. It is mainly used in the production of cold-rolled thin-gauge titanium coils and titanium alloy coils. technical background [0002] Cold-rolled thin-gauge titanium coils and titanium alloy coils are emerging structural and functional materials, which have many advantages such as high specific gravity, small thermal expansion coefficient, good corrosion resistance, high temperature performance, low temperature performance and low temperature superconductivity. Aerospace, military industry, and civilian fields such as chemical industry, petroleum, and sports are widely used. It is called the "third metal" after steel and aluminum, also known as "space metal" and "ocean metal". [0003] Titanium and titanium alloys start to absorb hydrogen at 250°C, oxygen at 400°C, and nitrogen at 600°C. Generally, the annealing temperature is high...

AI Technical Summary

Problems solved by technology

[0003] Titanium and titanium alloys start to absorb hydrogen at 250°C, oxygen at 400°C, and nitrogen at 600°C. Generally, the annealing temperature is higher than 600°C, and the annealing time of titanium and titanium alloys is longer, and the annealing temperature of cold-rolled titanium coils is longer. If the temperature is higher than 600°C, if the core is not fixed, the core will loosen and collapse. Therefore, the core is fixed by welding to maintain the shape of the core. It will leave welding scars, which will affect the quality of the board surface and reduce the yield