Method for producing titanium tube for salt manufacturing equipment

Abstract

The invention relates to a method for producing a titanium tube for salt manufacturing equipment, which comprises the following steps of: (1) selecting TA10 titanium alloy as a raw material, wherein the TA10 titanium alloy comprises the following chemical compositions in percentage: 0.25 to 0.35 percent of Mo, 0.65 to 0.85 percent of Ni, less than or equal to 0.007 percent of H, 0.05 to 0.09 percent of O, less than or equal to 0.20 percent of Fe, less than or equal to 0.08 percent of C, less than or equal to 0.03 percent of N, less than or equal to 0.4 percent of other inevitable impurities with the single impurity content of less than or equal to 0.1 percent, and the balance of Ti; (2) preparing a tube blank from the raw material; (3) performing surface treatment, namely, polishing the tube blank by using a levigation grinding wheel, removing sand grains from the surface of the tube blank by re-pickling, and scraping the surface of the tube blank; (4) performing rolling, namely, setting the deformation of each pass and feed, and cold-rolling the tube blank many times; (5) performing vacuum uniform thermal treatment, namely, after the rolling of each pass, performing degreasing, pickling and coping on the titanium tube, and performing vacuum thermal treatment, wherein the vacuum thermal treatment specifically comprises the following steps of: equalizing the heat at 350 DEG C, equalizing the heat again at the time interval of half an hour in a subsequent temperature-rise period, performing the thermal treatment at 650 to 720 DEG C, preserving the heat for 3 hours, air-cooling the titanium tube in a furnace to 100 DEG C and taking the titanium tube out of the furnace for air-cooling; and (6) performing straightening, namely, straightening the titanium tube by using a straightening machine.

Description

Technical field [0001] The invention relates to a method for producing a titanium tube for salt making equipment. Background technique [0002] The pipes used in salt-making equipment are mainly made of plain carbon steel and copper. Due to the strong corrosiveness of the medium, the salt-making equipment has a short service life, serious running, leaking, dripping and leakage, and poor product quality. As TA10 alloy titanium has excellent salt corrosion resistance, it is suitable for salt making equipment. However, this titanium alloy tube is difficult to process and is prone to breakage during production, resulting in a low yield of the tube and a large diameter-to-wall ratio of the finished product. The size becomes larger during straightening and does not meet the requirements. Summary of the invention [0003] The purpose of the present invention is to provide a method for producing titanium pipes for salt making equipment. [0004] In order to achieve the above objective, th...

AI Technical Summary

Problems solved by technology

However, the processing of this titanium alloy tube is difficult, and it is prone to breakage during production, resulting in a low yield of the tube, and a large diameter-to-wall ratio of the finished product, and the size becomes larger during straightening and does not meet the requirements.