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Extrusion preparation method of titanium alloy thin-walled profile

A titanium alloy and profile technology, which is applied in the field of preparation of titanium alloy profiles, can solve problems such as long production cycle, high personnel cost, and large mold consumption, and achieve the effects of reduced equipment operating costs, high dimensional accuracy, and good surface quality

Active Publication Date: 2021-06-01
BAOJI TITANIUM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Titanium alloy profile products at home and abroad are produced by extrusion + orthopedic technology. At present, one extrusion die can only extrude one profile during profile extrusion, and only one profile can be prepared in one extrusion process. The consumption of the mold is large, Low utilization rate, low production efficiency, high equipment operation and personnel costs
[0003] The titanium alloy profile preparation technology of the related technology has a large consumption of extrusion dies, low production efficiency, high equipment operation and personnel costs, and a long production cycle
Therefore, the manufacturing cost of titanium alloy profiles is high and the production cycle is long

Method used

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  • Extrusion preparation method of titanium alloy thin-walled profile
  • Extrusion preparation method of titanium alloy thin-walled profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 , embodiment one is to adopt the extrusion die of L-shaped die hole to prepare L-shaped profile, and the wall thickness of L-shaped profile is 1.6mm, and its specific preparation method comprises the steps:

[0027] Step 1, using a vacuum consumable electric arc furnace to smelt a TC4 titanium alloy Φ710mm ingot, and smelt it twice. The ingot is planed and milled, and the phase transition point of the test is 990-1000°C;

[0028] Step 2: Coat the ingot in step 1 with an anti-oxidation protective coating, heat it in a natural gas furnace, and forge it into a Φ220×L mm billet on a 2,500-ton fast forging machine, and forge it at 1,200°C for 2 to 3 times , (α+β) two-phase zone forging 1 to 2 fire times, to ensure that the total deformation is greater than 50%;

[0029] Step 3, machining the rod blank of step 2 to obtain a smooth rod blank of Ф216×350 mm;

[0030] Step 4, using alcohol to clean the polished billet prepared in step 3, placing it in a resistanc...

Embodiment 2

[0042] see figure 2 , embodiment two is to adopt the extrusion die of L-shaped die hole to prepare L-shaped profile, and one side wall thickness of L-shaped profile is 1.6mm, and the other side wall thickness is 2.1mm, and its specific preparation method comprises the following steps:

[0043] Step 1: Use a vacuum consumable electric arc furnace to smelt TC4 titanium alloy Φ710mm ingots, and melt them twice; plan and mill the ingots, and test that the phase transition point is 970-980°C;

[0044] Step 2: Coat the ingot in step 1 with an anti-oxidation protective coating, heat it in a natural gas furnace, and forge it into a Φ220×L mm billet on a 2,500-ton fast forging machine, forging at 1180°C for 2 to 3 times , (α+β) two-phase zone forging 1 to 2 fire times, to ensure that the total deformation is greater than 50%;

[0045] Step 3, machining the rod blank of step 2 to obtain a smooth rod blank of Ф216×350 mm;

[0046] Step 4, using alcohol to clean the polished billet pre...

Embodiment 3

[0055] Embodiment three is to adopt the extrusion die of T-shaped die hole to prepare T-shaped profile, and its concrete preparation method comprises the steps:

[0056] Step 1, using a vacuum consumable electric arc furnace to smelt a TC4 titanium alloy Φ710mm ingot, and smelt it twice. The ingot is planed and milled, and the phase transition point of the test is 990-1000°C;

[0057]Step 2: Coat the ingot in step 1 with an anti-oxidation protective coating, heat it in a natural gas furnace, and forge it into a Φ220×L mm billet on a 2,500-ton fast forging machine, and forge it at 1,200°C for 2 to 3 times , (α+β) two-phase zone forging 1 to 2 fire times, to ensure that the total deformation is greater than 50%;

[0058] Step 3, machining the rod blank of step 2 to obtain a smooth rod blank of Ф216×350 mm;

[0059] Step 4, using alcohol to clean the polished billet prepared in step 3, placing it in a resistance furnace, drying it at 250°C for 15 minutes, taking it out and perf...

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Abstract

The invention provides an extrusion preparation method of a titanium alloy thin-wall profile. The corrosion-resistant titanium alloy comprises: smelting out TC4 titanium alloy Φ710mm ingot, forging the ingot into a bar blank of Φ220×L mm, preheating extrusion cylinder, extrusion die, extrusion pad, preheating temperature 300-500°C, and then use lubricant to lubricate the extrusion tool; quickly transfer the billet into the extrusion cylinder, the transfer time is less than 1min, and the extrusion speed is 120-300mm / S; the titanium alloy profile is produced. The extrusion preparation method of titanium alloy thin-walled profiles provided in the embodiments of the present invention not only realizes the extrusion preparation of thin-walled small-section profiles on a large-tonnage extrusion machine, but also greatly reduces mold costs, personnel costs, and equipment operating costs; Compared with the traditional process, this method does not need to increase the process or special treatment process, has strong operability, and can realize the extrusion of titanium alloy profiles of all cross-sectional shapes at present.

Description

technical field [0001] The invention relates to the technical field of preparation of titanium alloy profiles, in particular to an extrusion preparation method of titanium alloy thin-walled profiles. Background technique [0002] Titanium alloy profile products at home and abroad are produced by extrusion + orthopedic technology. At present, one extrusion die can only extrude one profile during profile extrusion, and only one profile can be prepared in one extrusion process. The consumption of the mold is large, Low utilization rate, low production efficiency, high equipment operation and personnel costs. [0003] The titanium alloy profile preparation technology of the related technology requires large consumption of extrusion dies, low production efficiency, high equipment operation and personnel costs, and long production cycle. Therefore, the manufacturing cost of titanium alloy profiles is high and the production cycle is long. Contents of the invention [0004] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02B21C23/32C22F1/02C22F1/18
CPCB21C23/32B21C25/025C22F1/02C22F1/183
Inventor 代春冯红超徐哲王俊琪王韦琪张平辉张平平
Owner BAOJI TITANIUM IND
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