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Forging method for improving yield of large-specification titanium slabs

A large-scale, high-yield technology, applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve problems such as high production costs, uncontrollable yields, folding cracks, etc., to achieve production Low cost, improved yield, and reduced machining loss

Active Publication Date: 2021-12-07
湖南湘投金天钛业科技股份有限公司
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Problems solved by technology

However, this forging method has the following major disadvantages for large-scale billets of about 10 tons: (1) the number of forging fires is increased, and defects such as folding and cracking are prone to occur during the upsetting process; The requirement for equipment upsetting net space is also high, the corresponding production cost is high, and the yield is uncontrollable

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  • Forging method for improving yield of large-specification titanium slabs
  • Forging method for improving yield of large-specification titanium slabs

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Embodiment 1

[0026] In this embodiment, the forging method for improving the yield of large-scale titanium slabs is mainly realized through the following steps:

[0027] (1) Machining treatment at both ends of the ingot: adopt the pure titanium ingot with a diameter of Φ1080mm produced by the applicant company, the ingot weight is about 10~11 tons; chamfer the head of the titanium ingot ≥30mm×45°, and the bottom Chamfering ≥ R50mm, the end surface of the bottom of the ingot is turned from the edge to R / 2 to remove a loose layer of ≥ 10mm;

[0028] (2) First fire heating: apply a layer of high-temperature protective coating on the surface of the titanium ingot treated in step (1), and then send the ingot into a gas heating furnace or an electric heating furnace for the first fire heating. The heating temperature is 1050℃, insulation coefficient is 0.5;

[0029] (3) The first fire widening forging and near-finished forging at the end: use the manipulator of the applicant company's 40 / 45MN f...

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Abstract

The invention relates to the technical field of titanium and titanium alloy product manufacturing, in particular to a forging method for improving the yield of large-specification titanium slabs. The method mainly comprises the steps of first-fire heating, first-fire broadening forging, edge closing and shaping, end near-finished product forging and pressing, hot material remelting or second-fire heating, slab tongue and slab shape control, slab machining and the like. According to the method, the plate shape can be effectively controlled, so that the machining loss is reduced, the yield of the forged slab can be remarkably improved, meanwhile, the forging heating number does not need to be increased, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of manufacturing titanium and titanium alloy products, in particular to a forging method for increasing the yield of large-size titanium slabs. Background technique [0002] With the rapid development of my country's titanium industry, "research and industrialization of large coil heavy titanium strip preparation technology" has been listed as an important development technology in the "Eleventh Five-Year Plan" development plan of China's titanium industry, especially for the research on wide titanium strips , application and production are becoming more and more extensive. The production of titanium strips with high width and large coil weight will inevitably require corresponding titanium slabs, so the production and trading volume of titanium slabs will increase accordingly. How to reduce the production cost of titanium slabs has become an important research topic. [0003] At present, there are two main ...

Claims

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Application Information

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IPC IPC(8): B21J1/02B21J1/06B21J5/00B21J13/10B21K29/00B23P15/00
CPCB21J1/06B21J1/02B21J13/10B21J5/008B21K29/00B23P15/00
Inventor 陈艳樊凯朱鸿昌朱雪峰宋敏智
Owner 湖南湘投金天钛业科技股份有限公司
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