CN114433634A - 一种钛合金管材的制造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 238000005242 forging Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000004513 sizing Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 6
- 239000011265 semifinished product Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims 1
- 239000000956 alloy Substances 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
- B21B19/10—Finishing, e.g. smoothing, sizing, reeling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/30—Finishing tubes, e.g. sizing, burnishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0078—Extruding the rolled product
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Abstract
本发明公开了一种钛合金管材的制造方法,包括以下步骤:S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;S2:加热:对管坯进行加热处理;S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管;S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;S5:脱管:将得到管材半成品进行脱管处理;S6:定径:对管材进行定径处理;S7:冷却:对定径后的管材进行冷却处理;S8:矫直:对管材进行加热矫直;S9:探伤;S10:标记入库。本发明,获得的合金管,其抗氧化能力强,可对制备的管材进行探伤处理,从而确保制备的合金管合格。
Description
技术领域
本发明涉及钛合金管材制造相关技术领域,具体是一种钛合金管材的制造方法。
背景技术
钛及钛合金材料具有质轻、高比强度、耐腐蚀、耐高温、超导特性等优异特性,广泛应用于航空航天、超塑成型、石化、超导等领域。随着装备向高可靠、高稳定和高集成化的发展要求,对小规格钛及钛合金管材的品质要求越来越高,主要体现在满足客户的严苛使用环境要求,即腐蚀介质、高压、高温等。高品质的小规格钛及钛合金管材要有极小的尺寸公差,表面质量一致、均匀,工艺性能和力学性能需满足特定工况使用要求。
现有的制作钛合金管材的方法,使得的钛合金管抗氧化能力较差。
发明内容
本发明的目的在于提供一种钛合金管材的制造方法,以解决现有技术中的问题。
为实现上述目的,本发明提供如下技术方案:一种钛合金管材的制造方法,包括以下步骤:
S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;
S2:加热:对管坯进行加热处理;
S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管;
S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;
S5:脱管:将得到管材半成品进行脱管处理;
S6:定径:对管材进行定径处理;
S7:冷却:对定径后的管材进行冷却处理;
S8:矫直:对管材进行加热矫直;
S9:探伤;
S10:标记入库。
优选的,所述坯料由以下材料组成:Ti:85%~95%;V: 2~4.5%;Al:5.5%~6.5%;Zr:1.0%~2%;Ru:0.1%~0.3%; Fe:0.1%~0.3%;O:0.1%~0.2%;C:0.05%~0.1%;N: 0.01%~0.05%;H:0.01%~0.05%。
优选的,所述步骤S2中加热的温度为1000~1100℃,时间是1~1.5h。
优选的,所述步骤S3中加热的温度为800~900℃。
优选的,所述步骤S7中冷却的温度为300-700℃。
优选的,所述步骤S9中探伤采用水压实验进行探伤。
与现有技术相比,本发明的有益效果是:S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;S2:加热:对管坯进行加热处理;S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管; S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;S5:脱管:将得到管材半成品进行脱管处理; S6:定径:对管材进行定径处理;S7:冷却:对定径后的管材进行冷却处理;S8:矫直:对管材进行加热矫直;S9:探伤; S10:标记入库;以上获得的合金管,其抗氧化能力强,可对制备的管材进行探伤处理,从而确保制备的合金管合格。
附图说明
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。在附图中:
图1是本发明的结构示意图。
具体实施方式
为使本发明实施方式的目的、技术方案和优点更加清楚,下面将结合本发明实施方式中的附图,对本发明实施方式中的技术方案进行清楚、完整地描述,显然,所描述的实施方式是本发明一部分实施方式,而不是全部的实施方式。基于本发明中的实施方式,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式,都属于本发明保护的范围。因此,以下对在附图中提供的本发明的实施方式的详细描述并非旨在限制要求保护的本发明的范围,而是仅仅表示本发明的选定实施方式。基于本发明中的实施方式,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式,都属于本发明保护的范围。
请参阅图1,本发明实施例中,一种钛合金管材的制造方法,包括以下步骤:
S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;
S2:加热:对管坯进行加热处理;
S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管;
S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;
S5:脱管:将得到管材半成品进行脱管处理;
S6:定径:对管材进行定径处理;
S7:冷却:对定径后的管材进行冷却处理;
S8:矫直:对管材进行加热矫直;
S9:探伤;
S10:标记入库。
优选的,所述坯料由以下材料组成:Ti:85%~95%;V: 2~4.5%;Al:5.5%~6.5%;Zr:1.0%~2%;Ru:0.1%~0.3%; Fe:0.1%~0.3%;O:0.1%~0.2%;C:0.05%~0.1%;N: 0.01%~0.05%;H:0.01%~0.05%。
优选的,所述步骤S2中加热的温度为1000~1100℃,时间是1~1.5h。
优选的,所述步骤S3中加热的温度为800~900℃。
优选的,所述步骤S7中冷却的温度为300-700℃。
优选的,所述步骤S9中探伤采用水压实验进行探伤。
本发明的工作原理是:S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;S2:加热:对管坯进行加热处理;S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管;S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;S5:脱管:将得到管材半成品进行脱管处理;S6:定径:对管材进行定径处理;S7:冷却:对定径后的管材进行冷却处理;S8:矫直:对管材进行加热矫直;S9:探伤;S10:标记入库。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (6)
1.一种钛合金管材的制造方法,其特征在于:包括以下步骤:
S1:制作管坯:选择坯料,通过挤压、锻造制作管坯,在坯料挤压、锻造的时候反复均匀涂覆防氧化涂层;
S2:加热:对管坯进行加热处理;
S3:穿孔:对加热的坯料进行轧穿孔变形,得到高温的空心管;
S4:挤压、轧制:对穿孔后的得到的空心管进行挤压、轧制,得到管材半成品;
S5:脱管:将得到管材半成品进行脱管处理;
S6:定径:对管材进行定径处理;
S7:冷却:对定径后的管材进行冷却处理;
S8:矫直:对管材进行加热矫直;
S9:探伤;
S10:标记入库。
2.根据权利要求1所述的一种钛合金管材的制造方法,其特征在于:所述坯料由以下材料组成:Ti:85%~95%;V:2~4.5%;Al:5.5%~6.5%;Zr:1.0%~2%;Ru:0.1%~0.3%;Fe:0.1%~0.3%;O:0.1%~0.2%;C:0.05%~0.1%;N:0.01%~0.05%;H:0.01%~0.05%。
3.根据权利要求1所述的一种钛合金管材的制造方法,其特征在于:所述步骤S2中加热的温度为1000~1100℃,时间是1~1.5h。
4.根据权利要求1所述的一种钛合金管材的制造方法,其特征在于:所述步骤S3中加热的温度为800~900℃。
5.根据权利要求1所述的一种钛合金管材的制造方法,其特征在于:所述步骤S7中冷却的温度为300-700℃。
6.根据权利要求1所述的一种钛合金管材的制造方法,其特征在于:所述步骤S9中探伤采用水压实验进行探伤。
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01205060A (ja) * | 1988-02-12 | 1989-08-17 | Sumitomo Metal Ind Ltd | α+β型チタン合金継目無管の製造方法 |
US20030070278A1 (en) * | 2001-10-16 | 2003-04-17 | Bhaven Chakravarti | Composite billet and method of manufacturing same for production of clad piping and tubing |
US20030196734A1 (en) * | 2002-04-18 | 2003-10-23 | Hidenori Ogawa | Method for manufacturing seamless steel tube |
CN102319764A (zh) * | 2011-07-18 | 2012-01-18 | 新兴铸管股份有限公司 | 一种不锈钢无缝管制造方法 |
CN103128102A (zh) * | 2013-03-18 | 2013-06-05 | 天津钢管集团股份有限公司 | 一种钛合金油井管的生产方法 |
CN104259206A (zh) * | 2014-08-29 | 2015-01-07 | 攀钢集团成都钢钒有限公司 | 一种用于油管接箍的钛合金无缝管的生产方法 |
CN108160709A (zh) * | 2018-01-26 | 2018-06-15 | 张国庆 | 一种钛合金热轧无缝管生产系统及其生产工艺 |
CN110711775A (zh) * | 2019-10-26 | 2020-01-21 | 鑫鹏源智能装备集团有限公司 | 一种钛合金管制造成型方法 |
CN110935729A (zh) * | 2019-10-26 | 2020-03-31 | 鑫鹏源智能装备集团有限公司 | 一种钛合金热轧无缝管生产系统及其生产工艺 |
CN112935010A (zh) * | 2020-11-12 | 2021-06-11 | 湖南湘投金天科技集团有限责任公司 | 一种大口径高强钛合金管材及其制备方法 |
-
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- 2021-12-06 CN CN202111480942.0A patent/CN114433634A/zh active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01205060A (ja) * | 1988-02-12 | 1989-08-17 | Sumitomo Metal Ind Ltd | α+β型チタン合金継目無管の製造方法 |
US20030070278A1 (en) * | 2001-10-16 | 2003-04-17 | Bhaven Chakravarti | Composite billet and method of manufacturing same for production of clad piping and tubing |
US20030196734A1 (en) * | 2002-04-18 | 2003-10-23 | Hidenori Ogawa | Method for manufacturing seamless steel tube |
CN102319764A (zh) * | 2011-07-18 | 2012-01-18 | 新兴铸管股份有限公司 | 一种不锈钢无缝管制造方法 |
CN103128102A (zh) * | 2013-03-18 | 2013-06-05 | 天津钢管集团股份有限公司 | 一种钛合金油井管的生产方法 |
CN104259206A (zh) * | 2014-08-29 | 2015-01-07 | 攀钢集团成都钢钒有限公司 | 一种用于油管接箍的钛合金无缝管的生产方法 |
CN108160709A (zh) * | 2018-01-26 | 2018-06-15 | 张国庆 | 一种钛合金热轧无缝管生产系统及其生产工艺 |
CN110711775A (zh) * | 2019-10-26 | 2020-01-21 | 鑫鹏源智能装备集团有限公司 | 一种钛合金管制造成型方法 |
CN110935729A (zh) * | 2019-10-26 | 2020-03-31 | 鑫鹏源智能装备集团有限公司 | 一种钛合金热轧无缝管生产系统及其生产工艺 |
CN112935010A (zh) * | 2020-11-12 | 2021-06-11 | 湖南湘投金天科技集团有限责任公司 | 一种大口径高强钛合金管材及其制备方法 |
Non-Patent Citations (1)
Title |
---|
莫畏: "钛", 30 June 2008, 冶金工业出版社, pages: 489 - 490 * |
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