CN103639234A - Hot extrusion process method of ultra-long TC11 titanium alloy pipe product - Google Patents

Hot extrusion process method of ultra-long TC11 titanium alloy pipe product Download PDF

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Publication number
CN103639234A
CN103639234A CN201310686734.5A CN201310686734A CN103639234A CN 103639234 A CN103639234 A CN 103639234A CN 201310686734 A CN201310686734 A CN 201310686734A CN 103639234 A CN103639234 A CN 103639234A
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China
Prior art keywords
titanium alloy
alloy pipe
forging
ingot
extrusion process
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Pending
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CN201310686734.5A
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Chinese (zh)
Inventor
张弯弯
张龙龙
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ZHEJIANG LONGHUA TITANIUM Co Ltd
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ZHEJIANG LONGHUA TITANIUM Co Ltd
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Priority to CN201310686734.5A priority Critical patent/CN103639234A/en
Publication of CN103639234A publication Critical patent/CN103639234A/en
Pending legal-status Critical Current

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  • Extrusion Of Metal (AREA)

Abstract

The invention discloses a hot extrusion process method of an ultra-long TC11 titanium alloy pipe product. The method comprises the following steps: (1) cutting a feed head and an ingot bottom of a TC11 titanium alloy pipe cast ingot, and removing surface defects of the TC11 titanium alloy pipe cast ingot; (2) carrying out cogging and forging on the TC11 titanium alloy pipe cast ingot by utilizing a forging press machine after the surface defects are removed in the step (1), and sequentially carrying out air cooling and surface polishing on the TC11 titanium alloy pipe cast ingot, so as to obtain a primary forging stock. The method has the beneficial effects that the process controllability of ultra-long TC11 titanium alloy pipe products is enhanced, the tissue shapes of the products are uniform, and the material yield is high; meanwhile, weld joints among the pipes are reduced in the actual use process, so that the use stability of the products is guaranteed, and the method is suitable for large-scale industrial production and high in production efficiency.

Description

A kind of hot extrusion process method of overlength TC11 titanium alloy tube product
Technical field
The present invention relates to a kind of hot extrusion process method of overlength TC11 titanium alloy tube product, particularly the hot extrusion process method of overlength TC11 titanium alloy tube product for a kind of submarine oil.
Background technology
Submarine oil forms by welding procedure production and processing mostly with overlength TC11 titanium alloy tube product in the market; Its technique operability is poor, and product tissue topography is inhomogeneous, percent defective is higher, the less stable that product is used in actual use; Simultaneously during large-scale industrial production, production efficiency is lower.
Summary of the invention
For existing submarine oil, use the shortcoming of overlength TC11 titanium alloy tube product processing technique, the invention provides a kind of hot extrusion process method of novel overlength TC11 titanium alloy tube product.
To achieve these goals, the measure that the present invention takes
A hot extrusion process method for overlength TC11 titanium alloy tube product, the described method first step: at the bottom of the rising head and ingot of excision TC11 titan alloy casting ingot, and remove the blemish of TC11 titan alloy casting ingot; Second step: adopt forging press that the TC11 titan alloy casting ingot of removing in the first step after blemish is carried out to cogging forging, and carry out figuring of surface processing after air cooling, obtain elementary forging stock; The 3rd step: bar is cut into the long hair ingot of 500mm~600mm by band saw lathe, the hair ingot cutting is stripped off the skin on lathe, monolateral 2mm, according to the interior hole size of production tube, with depth drill, get out corresponding through hole, and the iron sheet that is 0.9mm~1mm by the coated thickness of middle bar outer surface, through-hole inner surface and end face, the while is wrapped the copper sheet of 0.9mm~1mm in iron sheet outside; The 4th step: the excellent embryo of wrapping is heated to 900~920 ℃ and be incubated after 3h with electric furnace, then being sent into the two moving horizontal extruders of 2500T, to be extruded into length be 6000mm~15000mm alloy pipe stock, extrusion speed is controlled at 45~50mm/S simultaneously; And then remove by soaking in the nitric acid washing lotion that is 25~50% in volumetric concentration after pipe air cooling iron sheet and the copper sheet that remains in pipe surface; The 5th step: alloy pipe stock obtains production tube through the reconditioning of physics car light;
The cross section of described TC11 titan alloy casting ingot is that diameter is the circle of 480mm~630mm;
Described cogging is forged and is adopted the axially forging mode of pulling, is divided into a fire and completes, and the initial forging temperature that time cogging of every fire is forged is above 100 ℃~150 ℃ of beta transformation point;
The cross section of described elementary forging stock is that the length of side is the circular bar of 220mm~230mm, the TC11 titanium alloy large size bar that length is 2500mm~3500mm.
Beneficial effect of the present invention: the invention enables the process controllability of overlength TC11 titanium alloy tube product to strengthen, product tissue topography is even, lumber recovery is high; Meanwhile, reduced in actual use the weld seam that pipe is connected with pipe, guaranteed the stability that product is used and be applicable to large-scale industrial production, production efficiency is high.
The specific embodiment
A hot extrusion process method for overlength TC11 titanium alloy tube product, the described method first step: at the bottom of the rising head and ingot of excision TC11 titan alloy casting ingot, and remove the blemish of TC11 titan alloy casting ingot; Meanwhile, the cross section of TC11 titan alloy casting ingot is that diameter is the circle of 480mm~630mm.Second step: adopt forging press that the TC11 titan alloy casting ingot of removing in the first step after blemish is carried out to cogging forging, and carry out figuring of surface processing after air cooling, obtain elementary forging stock; Meanwhile, described cogging is forged and is adopted the axially forging mode of pulling, is divided into a fire and completes, and the initial forging temperature that time cogging of every fire is forged is above 100 ℃~150 ℃ of beta transformation point; In addition, the cross section of described elementary forging stock is that the length of side is the circular bar of 220mm~230mm, the TC11 titanium alloy large size bar that length is 2500mm~3500mm.The 3rd step: bar is cut into the long hair ingot of 500mm~600mm by band saw lathe, the hair ingot cutting is stripped off the skin on lathe, monolateral 2mm, according to the interior hole size of production tube, with depth drill, get out corresponding through hole, and the iron sheet that is 0.9mm~1mm by the coated thickness of middle bar outer surface, through-hole inner surface and end face, the while is wrapped the copper sheet of 0.9mm~1mm in iron sheet outside; The 4th step: the excellent embryo of wrapping is heated to 900~920 ℃ and be incubated after 3h with electric furnace, then being sent into the two moving horizontal extruders of 2500T, to be extruded into length be 6000mm~15000mm alloy pipe stock, extrusion speed is controlled at 45~50mm/S simultaneously; And then remove by soaking in the nitric acid washing lotion that is 25~50% in volumetric concentration after pipe air cooling iron sheet and the copper sheet that remains in pipe surface; The 5th step: alloy pipe stock obtains production tube through the reconditioning of physics car light.The invention enables the process controllability of overlength TC11 titanium alloy tube product to strengthen, product tissue topography is even, lumber recovery is high; Meanwhile, reduced in actual use the weld seam that pipe is connected with pipe, guaranteed the stability that product is used and be applicable to large-scale industrial production, production efficiency is high.
Those ordinary skill in the art's simple change and replacement are all within protection scope of the present invention.

Claims (4)

1. a hot extrusion process method for overlength TC11 titanium alloy tube product, is characterized in that, the described method first step: at the bottom of the rising head and ingot of excision TC11 titan alloy casting ingot, and remove the blemish of TC11 titan alloy casting ingot; Second step: adopt forging press that the TC11 titan alloy casting ingot of removing in the first step after blemish is carried out to cogging forging, and carry out figuring of surface processing after air cooling, obtain elementary forging stock; The 3rd step: bar is cut into the long hair ingot of 500mm~600mm by band saw lathe, the hair ingot cutting is stripped off the skin on lathe, monolateral 2mm, according to the interior hole size of production tube, with depth drill, get out corresponding through hole, and the iron sheet that is 0.9mm~1mm by the coated thickness of middle bar outer surface, through-hole inner surface and end face, the while is wrapped the copper sheet of 0.9mm~1mm in iron sheet outside; The 4th step: the excellent embryo of wrapping is heated to 900~920 ℃ and be incubated after 3h with electric furnace, then being sent into the two moving horizontal extruders of 2500T, to be extruded into length be 6000mm~15000mm alloy pipe stock, extrusion speed is controlled at 45~50mm/S simultaneously; And then remove by soaking in the nitric acid washing lotion that is 25~50% in volumetric concentration after pipe air cooling iron sheet and the copper sheet that remains in pipe surface; The 5th step: alloy pipe stock obtains production tube through the reconditioning of physics car light.
2. a kind of hot extrusion process method of overlength TC11 titanium alloy tube product according to claim 1, is characterized in that, the cross section of described TC11 titan alloy casting ingot is that diameter is the circle of 480mm~630mm.
3. a kind of hot extrusion process method of overlength TC11 titanium alloy tube product according to claim 1, it is characterized in that, described cogging is forged and is adopted the axially forging mode of pulling, is divided into a fire and completes, and the initial forging temperature that time cogging of every fire is forged is above 100 ℃~150 ℃ of beta transformation point.
4. a kind of hot extrusion process method of overlength TC11 titanium alloy tube product according to claim 1, it is characterized in that, the cross section of described elementary forging stock is that the length of side is the circular bar of 220mm~230mm, the TC11 titanium alloy large size bar that length is 2500mm~3500mm.
CN201310686734.5A 2013-12-13 2013-12-13 Hot extrusion process method of ultra-long TC11 titanium alloy pipe product Pending CN103639234A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894441A (en) * 2014-03-20 2014-07-02 宝鸡拓普达钛业有限责任公司 Machining method of TC4 titanium alloy thick-wall tubular product
CN104741873A (en) * 2015-01-30 2015-07-01 深圳市江为五金螺丝有限公司 Numerical control extrusion process
CN106425317A (en) * 2016-11-15 2017-02-22 宝钛集团有限公司 Preparation method of Ti-B19 high-strength titanium alloy large-caliber thick wall pipe
CN112605123A (en) * 2020-11-30 2021-04-06 西北有色金属研究院 Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering
CN112872088A (en) * 2019-12-01 2021-06-01 重庆金世利航空材料有限公司 Preparation method of overlong titanium alloy seamless extrusion pipe
CN113857786A (en) * 2021-10-21 2021-12-31 西安赛特思迈钛业有限公司 TC4 titanium alloy pipe and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103894441A (en) * 2014-03-20 2014-07-02 宝鸡拓普达钛业有限责任公司 Machining method of TC4 titanium alloy thick-wall tubular product
CN103894441B (en) * 2014-03-20 2016-06-29 宝鸡拓普达钛业有限责任公司 The processing method of TC4 titanium alloy thick-wall pipe material
CN104741873A (en) * 2015-01-30 2015-07-01 深圳市江为五金螺丝有限公司 Numerical control extrusion process
CN106425317A (en) * 2016-11-15 2017-02-22 宝钛集团有限公司 Preparation method of Ti-B19 high-strength titanium alloy large-caliber thick wall pipe
CN112872088A (en) * 2019-12-01 2021-06-01 重庆金世利航空材料有限公司 Preparation method of overlong titanium alloy seamless extrusion pipe
CN112605123A (en) * 2020-11-30 2021-04-06 西北有色金属研究院 Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering
CN112605123B (en) * 2020-11-30 2022-03-15 西北有色金属研究院 Preparation method of low-cost high-toughness titanium alloy pipe for ocean engineering
CN113857786A (en) * 2021-10-21 2021-12-31 西安赛特思迈钛业有限公司 TC4 titanium alloy pipe and preparation method thereof

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Application publication date: 20140319

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