Study of cold working properties of titanium materials

Titanium tube selection of industrial pure titanium gr2, according to GB/T3624-2010 standard, the allowable deviation of ± 0.65mm outside diameter of the pipe, the allowable deviation of the wall thickness does not exceed its nominal wall thickness of ± 12.5%, the inner and outer surface of the pipe should be clean, no cracks, folding, peeling and pinholes and other visually visible defects. Cold bending titanium tube bender with CNC high product quality, high processing efficiency, in a single process to complete the processing of multiple bending times, reducing the workload of post-assembly and welding, suitable for mass production. The key to production is to select the appropriate process parameters according to the mechanical properties of the material and the processing capacity of the equipment (including bending speed, sequence and rebound settings, etc.), so as to ensure the production of qualified products.

Because of the light specific gravity of titanium rod metal, strength Sawai and excellent corrosion resistance to alkali, chloride, organic chlorine, nitric acid and sulfuric acid and other media, it is widely used in chemical equipment. Titanium electrodes are used for electrolytic deposition and refining of metals such as copper, gold, nickel, manganese and manganese dioxide from sulfuric acid solutions containing sulfides. The excellent corrosion resistance of titanium metal and its oxide film can act as a good separator, which is the main reason for its application in the electrolytic industry.m. In the process of producing manganese dioxide by electrolysis, titanium corrosion resistance can be used to make heaters because the electrolyte is highly corrosive. The author introduces the structure of titanium heater, the disadvantages of processing titanium bend by hot simmer method and the working principle and processing process of processing titanium bend by using CNC bending machine.

Due to the poor cold processing properties of titanium, there is no research on the processing of titanium tubes with CNC pipe bending machine in the domestic and international literature. In a recent batch of titanium heater production, in order to improve product quality, but also on the CNC pipe bender processing titanium bend to do a trial, and professional pipe bending manufacturer using CNC pipe bender cold processing titanium bend. Titanium heater mainly composed of small 60mmX3mm titanium seamless tube heater designed with pressure of 0.4MPa and temperature 200degC. The heater is placed in the electrolytic bath full of electrolyte, when the work of high temperature steam into the titanium tube to heat the electrolyte. The process of processing titanium bend by the hot simmer method is: fill the titanium tube with fine sand and pounding, and then the titanium tube is mounted on a simple bending mold, and the part to be bent is heated with an oxygen gun to bend the titanium tube; the bent titanium tube is cut by 90 pieces each,was then attached to the straight tube group by welding. With the hot simmer method of processing titanium bending drawbacks are: tube ellipticity (not less than 4mm), thickness thinning (the largest thinning parts appear in the outer arc, thinning amount of more than 1mm); pressure on the inner wall is easy to wrinkle; size and shape consistency is poor, resulting in the post-assembly to be manually corrected; processing efficiency is low, bending titanium tube depends entirely on the operator's experience and technical proficiency; at the same time, due to The processing process of titanium tube is heated, if the temperature control is not good, easy to cause material oxidation, thus reducing the corrosion resistance of the equipment.