Forming method of large-concentration-ratio upset forging components made of titanium alloy

A technology of titanium alloy top and aggregation ratio, which is applied in the direction of engine components, metal processing equipment, mechanical equipment, etc., can solve problems such as difficult upsetting aggregation, improve coaxiality and surface quality, reduce grinding amount, and reduce production cost effect
CN105328112AActive Publication Date: 2016-02-17SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
Publication Date
2016-02-17

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Abstract

The invention aims at solving the problem that upset forging rods with large concentration ratio are difficult to obtain by an upset forging manner in the prior art, and provides a forming method of large-concentration-ratio upset forging components made of titanium alloy. The method comprises the following steps of: taking a bar material made of the titanium alloy, heating the bar material, and placing one end of the bar material in a forging die; performing forging with a forging machine till the ratio of the diameter of the large end of the deforming part of the bar material in the die to the diameter of the small end of the deforming part of the bar material is 1.1-1.5 and the large end and the part which does not deform form a bending angle of R30-R50; performing forging seven times so as to obtain an upset forging component with large concentration ratio. According to the method, the bar material made of the titanium alloy is used as a starting material, through seven times of upset forging, a titanium-alloy upset forging blank with a large end in a parallelogram cylinder shape, a rhombic cylinder shape, a cylindrical shape, or an elliptic cylinder shape and the like is formed, and the maximum concentration ratio reaches 7.1. Through the adoption of the method, the coaxiality of forging blanks and the surface quality of the forging blanks are improved; the grinding amount in subsequent procedures is reduced, and the qualification rate of final forgings is increased; the production efficiency is improved; the production cost is reduced.
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Description

technical field

[0001] The invention belongs to the field of metal plastic forming, in particular to a forming method of a titanium alloy top forging with a large aggregation ratio. Background technique

[0002] Upset forgings are divided into rod forgings with thick parts, forgings with through holes or non-through holes without rods, extrusions, pipe upsetting forgings, etc.

[0003] Among stainless steel forgings, the aggregation ratio of rod forgings with thick parts (that is, the ratio of the length of the thick part to the diameter of the bar) can reach more than 10. However, the aggregation ratio of titanium alloy top forgings is relatively small, generally 1.2 to 1.4, which is only suitable for upsetting of general parts or blanking of small and medium blades. This is because the metal fluidity of titanium alloy itself is poor, and its toughness is also lower than that of stainless steel.

[0004] At present, some aeroengines use titanium alloy blade mounting plate...

Claims

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