Thermal-covering process for thermal forming of super-large titanium alloy whole frame die forging

A titanium alloy and hot forming technology, applied in metal processing equipment, manufacturing tools, forging/pressing/hammer devices, etc., can solve the problems of poor filling of forgings, uneven structure and performance, and achieve low cost, simple operation, and low cost. The effect of equipment tonnage
CN106040928AActive Publication Date: 2016-10-26AVIC BEIJING INST OF AERONAUTICAL MATERIALS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
Publication Date
2016-10-26

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Abstract

The invention relates to the field of forging of large die forgings, and discloses a thermal-covering process for thermal forging of a super-large titanium alloy whole frame die forging. The process includes the following steps of pre-heating a blank, coating the blank with a protective lubricant, heating the blank to a forging temperature and conducting heat preservation, covering the outer surface of the titanium blank with a covering material through a binder, placing the blank into an electric furnace again to be heated after thermal-covering is completed, and taking the blank out of the furnace to be forged after being heated to the forging temperature. The process is simple in operation, low in cost and capable of preventing the surface temperature of the blank from descending too fast in the transferring and producing procedures and ensuring the effect that the blank is at a high start-forging temperature during die forging; and material flowing of the forging is facilitated, the tonnage of equipment can be lowered, and the problems of poor filling and the non-uniform structure property of the forging during existing production of the super-large titanium alloy whole frame die forging can be solved.
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Description

technical field

[0001] The invention relates to the field of forging of large die forgings, in particular to a hot sheathing process for hot forming of extra large titanium alloy whole frame die forgings. Background technique

[0002] Titanium alloy has the characteristics of narrow forging temperature range, high deformation resistance, and difficult forming. Titanium alloy die forging is generally produced by forging process of direct die forging after heating the billet. In actual production, the titanium alloy billet is clamped out from the heating furnace to press On-machine forging, the intermediate process includes furnace transfer, material placement and forging. During this period, due to the influence of radiation heat transfer and contact heat transfer, the temperature of the titanium alloy billet will drop rapidly, and the forming temperature will drop, resulting in poor forging shape. , Inhomogeneous microstructure and properties seriously affect the quality of ...

Claims

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