Extrusion preparation method of titanium alloy thin-wall sections

A technology for titanium alloys and profiles, applied in the field of preparation of titanium alloy profiles, can solve the problems of long production cycle, high personnel cost, large mold consumption, etc., and achieve the effects of reducing equipment operating costs, high dimensional accuracy, and good surface quality.

Active Publication Date: 2018-12-18
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 equipmen

Method used

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  • Extrusion preparation method of titanium alloy thin-wall sections
  • Extrusion preparation method of titanium alloy thin-wall sections

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Experimental program
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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, and forge it 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 bille...

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 titanium alloy thin-wall sections. A anti-rust titanium alloy comprises TC4 titanium alloy phi 710 mm ingot casting is smelted, the ingot casting is forged to phi 220*L mm bar billet, an extrusion container, an extrusion film and an extrusion mat are conducted to preheat, preheat temperature is at 300-500 DEG C, and extrusion tools are conducted to smearing and lubrication process; the bar billet is shifted to the extrusion container quickly, shift time is less than 2 minutes, and extrusion speed is 120-300 mm/S; and titanium alloy sections are produced. According to the extrusion preparation method of the titanium alloy thin-wall sections, the extrusion of thin-wall small cross section on the large tonnage extrusion machine is achieved, meanwhile, costs of mode, labor and device operation are reduced greatly; compared with a traditional process, adding process or special treatment process is not needed, operability is strong and extrusion of present all cross sectional titanium alloy sections can be achieved.

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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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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