Efficient titanium and titanium alloy cast ingot short-process precision-forging blank forging process

Abstract

The invention provides a efficient titanium and titanium alloy cast ingot short-process precision-forging blank forging process. The process comprises a heating process, a precision forging machine precision forging deformation treatment, an inspection process and a machining process, then a titanium alloy bar material is obtained, wherein the heating process adopts an annular heating furnace, heating of titanium and titanium alloy ingot blanks is achieved through flame heating, three stages of preheating, heating and soaking are adopted to achieve heating in the heating process, the heating temperature of the preheating section is 800+ / -50 DEG C, the heating time is 60-70 min, the heating temperature of the heating section is 900-1150DEG C, the heating time is 70-90 min, the heating temperature of the soaking section is equivalent to the heating temperature of the heating section, the soaking time is 60-90 min, the precision forging machine precision forging deformation treatment comprises the steps of carrying out precision forging through a hydraulic precision forging machine and carrying out hammering forging by using four hammers, and the forging time is 10-30 min. According to the process, by adopting the annular heating furnace with an improved heating mode, an annular sectional heating mode is adopted, and the precision forging machine forging deformation treatment is combined, so that the fast, efficient and short-process preparation of the titanium and titanium alloy cast ingots is achieved.

Description

technical field [0001] The invention relates to the technical field of forging titanium and titanium alloy rods, in particular to a high-efficiency titanium and titanium alloy ingot casting short-flow precision forging blanking process. Background technique [0002] Compared with copper, aluminum, iron and nickel in the heating process of titanium and titanium alloys, the thermal conductivity of titanium is low. The main difficulty in heating is that when the surface heating method is used, the heating time is quite long, and when large billets are heated, the cross-sectional temperature difference is large. Unlike the thermal conductivity of copper, iron, and nickel-based alloys, which decrease with the increase of temperature, the thermal conductivity of titanium alloys increases with the increase of temperature. [0003] However, when the heating temperature is increased, titanium and titanium alloys also react strongly with air. Titanium reacts strongly with oxygen when...

AI Technical Summary

Problems solved by technology

This getter layer deteriorates the deformation properties of the alloy

[0004] to combine figure 1 In the prior art, the blanking process for titanium alloy ingots is usually through heating, blank forging, secondary heating, secondary forging deformation, inspection, machining, bar preparation, and even under some performance requirements, it will also Including three times of heating and three times of heating forging deformation process, prolonging the billet opening process of titanium alloy ingots, the corresponding cost is also increased a lot

[0005] However, in addition to strictly controlling the quality of the production process in the production of titanium alloy materials, the low-cost, high-efficiency, and short-process titanium and titanium alloy processing technologies are the keys to the wide application of titanium alloys in various industries. The current cost is still very high. High, low-cost preparation has been paid more and more attention by research and development departments and titanium production enterprises. Excellent performance, good surface quality and high material yield are currently a key issue in the production and preparation of titanium alloy rods.

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