Analysis of forging process of titanium alloy GR5 material

Titanium and titanium alloys have been favored by all walks of life this year due to their high strength, corrosion resistance, high specific strength, wear resistance, high-temperature resistance, low-temperature resistance, no magnetism, biophilicity, and rich resources.

And gradually in the oil drill pipe, oil exploration, oil drilling platform, vacuum coating, mining equipment, coal chemical equipment, pressure equipment accessories, high-temperature equipment accessories, deep-sea exploration equipment accessories, wear-resistant equipment accessories, corrosion-resistant equipment accessories, gas Drilling equipment, sports equipment, automobiles, motorcycles, computers, mobile phones, and other fields of high-pressure resistance, wear resistance, and corrosion resistance have been widely used and promoted.

The cleaning technology of titanium alloy forgings has two aspects: one is the removal of oxide scale; the other is the removal of α shell layer. The rust can be removed by mechanical methods, such as sandblasting; or chemical methods, such as molten salt removal. The choice of rust removal method depends on the size, complexity and cost of the part.

Sandblasting is an effective method to remove scales. It can remove scales with a thickness of 0.13-0.76mm. Zirconium sand or steel grit with 100-150 mesh can be used. The pressure can reach 275Pa. Although sandblasting can be used for forgings of various sizes, it is mostly used for medium and large titanium alloy forgings. The sandblasting equipment can be equipped with abrasive rollers, shot blasting or sandblasting devices. Pickling is required after sandblasting to remove the α shell layer.

Salt-dissolving rust removal is another effective method to remove oxide scale, and acid washing is also followed to remove the alpha shell layer. A flow chart of rust removal and pickling, solution composition and related parameters are usually used. The shelf used for rust removal with dissolved salt is generally made of wood, titanium or stainless steel to prevent electric potential from being generated between the workpiece and the shelf, which may cause electrical erosion or arcing on the workpiece. Salt rust removal is often used for medium and small forgings. In the case of large quantities of forgings, the operating system can be fully automated.

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