CN108034859A - NiCu30 alloy pipe processing technologys - Google Patents
NiCu30 alloy pipe processing technologys Download PDFInfo
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- CN108034859A CN108034859A CN201711142576.1A CN201711142576A CN108034859A CN 108034859 A CN108034859 A CN 108034859A CN 201711142576 A CN201711142576 A CN 201711142576A CN 108034859 A CN108034859 A CN 108034859A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
That finished product stability made from existing congenic method processing is not good enough, and processing technology is complicated for solving the present invention relates to a kind of NiCu30 alloy pipes processing technology, technical problem of high cost and design.The pipe chemical composition of the alloy pipe processing technology is Fe1.55%, C0.05%, S ＜ 0.005%, Si0.04%, Mn1.13%, Cu28.9%；Its main points is that the pipe passes sequentially through extrusion process, cold working, pickling process to obtain, and cold working includes tube rolling and heat treatment；Extrusion-processing technology：Light ingot → heating → perforates → strips off the skin, and → scale → alkali cleaning → pickling → inspection is aligned → cut in reaming → heating → extruding → → turns material.The pipe heat treatment process of cold working first passes through resistance heating stove heat, then is annealed by vacuum annealing furnace, and recrystallization annealing temperature temperature is annealed between 650~850 DEG C in 700 DEG C × 1h, obtains the tubing that working modulus is 30~80%.
Description
Technical field
The present invention relates to the processing technology of alloy pipe, is a kind of NiCu30 alloy pipes processing technology.
Background technology
NiCu30 alloys, also known as monel metal, are a kind of abros.The alloy is significant anti-corrosion due to it
Characteristic and higher mechanical property, are widely used as the material of corrosion resistant apparatus.NiCu30 alloy yield tensile ratios are small, and elongation percentage is high,
Perfect heat treatment process is needed to be ensured.Existing such alloy and its processing technology, as disclosed in Chinese patent literature
Application number 201510760215.8, data of publication of application 2016.02.17, " a kind of highly corrosion resistant monel is seamless for denomination of invention
Pipe and its manufacture method "；The chemical composition of the monel seamless pipe is by weight percentage：Ni >=60, Cu35-37, Fe
≤ 2, Mn≤1, C ＜ 0.4, Si ＜ 0.3, S ＜ 0.015, Pb ＜ 0.01, Bi ＜ 0.15, Sn ＜ 0.22, Sb ＜ 0.13, surplus is not
Evitable trace element；And its manufacture method includes the following steps：Smelt, cast circular pipe, circular heating of pipe blank, wear
Hole, first time pickling, cold rolling, degreasing, heat treatment, finishing, second of pickling.The processing technology of above-mentioned monel seamless pipe,
But the more difficult processing applied to NiCu30 alloy pipes, the processing that such processing technology is applied to NiCu30 alloy pipes are given birth to
Production, also needs to carry out further improve and perfect to work flow.
The content of the invention
To overcome above-mentioned deficiency, the purpose of the present invention is providing NiCu30 alloy pipe processing technologys to this area, make it
It is not good enough to solve finished product stability made from existing congenic method processing, and processing technology is complex, the higher technology of cost
Problem.The purpose is to what is be achieved through the following technical solutions.
A kind of NiCu30 alloy pipes processing technology, the pipe chemical composition of the alloy pipe processing technology are
Fe1.55%, C0.05%, S ＜ 0.005%, Si0.04%, Mn1.13%, Cu28.9%, pipe diameter of phi 215mm, length
>=450mm, pipe pass through blank ingot casting shaping；The main points of its processing technology be the pipe pass sequentially through extrusion process, it is cold plus
Work, pickling process to obtain finished product, and cold working includes tube rolling and heat treatment, and the tubing of finished product is 25 × 2mm of Φ；The extruding
The flow of processing technology is specific as follows：Scale is cut in light ingot → heating → → reaming → heating → extruding → is aligned → of perforating → strip off the skin
→ alkali cleaning → pickling → inspection → turn material.Above-mentioned processing technology, and NiCu30 alloys made from extrusion-processing technology therein
Tubing stability is preferable, and processing cost is relatively low, and processing technology is relatively simple.
Perforation, reaming, the heating of the extrusion-processing technology are specific as follows：Penetration hole diameter is Φ 75mm, and heating-up temperature is
1200 DEG C, soaking time is 10 minutes, obtains ingot blank, counter bore diameter is Φ 85mm.Above-mentioned perforation uses 1000 tons of perforating apparatus
Enterprising eleven punch 11,1150 DEG C -1250 DEG C of heating-up temperature, soaking time can be implemented for 5-10 minutes, but above-mentioned heating-up temperature and guarantor
The warm time is optimum condition.
The extrusion-processing technology using glass dust lubricate, 1150 DEG C of heating-up temperature, keep the temperature 10 minutes, in extrude at a slow speed,
Obtain pipe.The pipe surface that above-mentioned extrusion-processing technology obtains is smooth, has slight ditch bar, tangerine peel, meets processing request.
The billet production flow of the cold working is specific as follows：Using two roller coggings, finished product is produced by two-roller mill, production
When surface smear lubricant, repair pass curve.Requirement is fully met so as to produce dimensional accuracy and outer surface quality
Tubing, while shorten the production cycle, reduce production cost.
Φ 25 × 2mm rolling mill practices of the pipe are：Φ80×9mm→Φ70×7mm→Φ50×4.5mm→Φ36
×3.2mm →Φ25×2mm。
The pipe heat treatment process of the cold working first passes through resistance heating stove heat, then is moved back by vacuum annealing furnace
Fire, recrystallization annealing temperature temperature are annealed between 650~850 DEG C in 700 DEG C × 1h, perfect recrystallization, obtain working modulus for 30~
80% tubing.The tubular object extruding rate that above-mentioned processing obtains meets comparatively ideal Performance Match, crystal grain in the range of 30~80%
Size, number of die it is relatively reasonable, crystal grain is more uniform tiny.
The cold working surface of tubing is in HNO in the acid cleaning process310%th, H2O and 3% chromic acid carry out pickling 3 minutes.On
It is bright to state the tubing surfaces externally and internally that acid cleaning process obtains, surface non-scale, outside diameter reduction 0.01mm.
The vacuum annealing surface of tubing is in HNO in the acid cleaning process310-15%, H2O and 3-5% potassium chromates carry out pickling
5-6 minutes, surfaces externally and internally removed removing oxide layer.The tubing surfaces externally and internally scale removal that above-mentioned acid cleaning process obtains is thorough, outside diameter
Reduce 0.08-0.10mm.
The processing technology of the present invention is feasible, production and processing process is simple, conveniently, cost it is low, obtained alloy pipe is stablized
Property it is good, working modulus stablize；Its processing particularly suitable as NiCu30 alloy pipes, and similar product processing technology
Improve.
Brief description of the drawings
Fig. 1 is the relation shape appearance figure one of different annealing temperature and structure property under the identical working modulus of the present invention.
Fig. 2 is the relation shape appearance figure two of different annealing temperature and structure property under the identical working modulus of the present invention.
Fig. 3 is the relation shape appearance figure three of different annealing temperature and structure property under the identical working modulus of the present invention.
Fig. 4 is the relation shape appearance figure four of different annealing temperature and structure property under the identical working modulus of the present invention.
Fig. 5 is the relation shape appearance figure five of different annealing temperature and structure property under the identical working modulus of the present invention.
Fig. 6 is the heating-up temperature of the present invention and the graph of relation of intensity.
Fig. 7 is the heating-up temperature of the present invention and the graph of relation of elongation percentage.
Fig. 8 be the present invention different working moduluses, the relation shape appearance figure one of identical annealing temperature and structure property.
Fig. 9 be the present invention different working moduluses, the relation shape appearance figure two of identical annealing temperature and structure property.
Figure 10 be the present invention different working moduluses, the relation shape appearance figure three of identical annealing temperature and structure property.
Figure 11 be the present invention different working moduluses, the relation shape appearance figure four of identical annealing temperature and structure property.
Figure 12 be the present invention different working moduluses, the relation shape appearance figure five of identical annealing temperature and structure property.
Figure 13 be the present invention different working moduluses, the relation shape appearance figure six of identical annealing temperature and structure property.
Figure 14 is the working modulus of the present invention and the graph of relation of performance.
Figure 15 is the working modulus of the present invention and the graph of relation of elongation percentage.
Embodiment
In conjunction with attached drawing, structure of the present invention and use are further described.The present invention for NiCu30 alloy pipes into
Row research, determines its heat treatment process parameter, studies the matching relationship of processing technology and structure property, determines optimised process road
Line.Specific research and technological process are as follows：The pipe chemical composition of experimental study materials meets the regulation of table 1 below：
| Element | Fe | C | S | Si | Mn | Cu |
| Component % | 1.55 | 0.05 | ＜ 0.005 | 0.04 | 1.13 | 28.9 |
Above-mentioned pipe specification：Diameter of phi 215, length >=450mm, blank form：Ingot casting；Trimmed size：25 × 2mm of Φ,
Mechanical properties of tubular goods：The horizontal room-temperature mechanical property of annealed state tubing meets the regulation of table 2 below：
| State | Tensile strength Rm (MPa) | Yield strength Rp (MPa) | Elongation percentage A50(%) |
| Annealing | ≥483 | ≥193 | ≥35 |
| Stress elimination | ≥586 | ≥379 | ≥15 |
Above-mentioned pipe processing is related to extrusion process, and extrusion process flow is as follows：Light ingot → heating → perforate → stripping off the skin → expand
Align → cut scale → alkali cleaning → pickling → inspection → turn material in hole → heating → extruding →；Extrude specification：Φ 86 × 9mm and Φ 80
Two kinds of specifications of × 9mm are tested.Perforation, reaming, heating：In 1000 tons of enterprising eleven punch 11s of perforating apparatus, penetration hole diameter Φ
75mm, heating-up temperature test 1150 DEG C, 1200 DEG C, 1250 DEG C respectively, soaking time 5,10 minutes.Result of the test is shown in Table 3：
Experiment is drawn more than：Penetration hole diameter is Φ 75mm, and heating-up temperature is 1200 DEG C, and soaking time is 10 minutes, is obtained
Preferable perforation ingot blank is obtained, counter bore diameter is Φ 85mm.
Above-mentioned extrusion-processing technology is lubricated using glass dust, 1150 DEG C of heating-up temperature, 1200 DEG C, keeps the temperature 10 minutes, experiment
Specification：80 × 9mm of Φ 86 × 9mm and Φ.Result of the test is shown in Table 4：
Note：A refers to the inner surface of tubing；B refers to the outer surface of tubing.
Tested more than as it can be seen that lubricated using glass dust, in extrude at a slow speed, Φ 80 × 9mm of 86 × 9mm and Φ, heating temperature
1150 DEG C of degree, obtains preferable pipe.
The billet production process choice of cold working：Scheme one, pipe are given birth to through two roller series coggings, finished product by multi-roll mill
Production；Multi-roll mill production finished product dimensional accuracy is high, and surfaces externally and internally lubricant is required low；Scheme two, pipe are opened through two rollers
Base, finished product are produced by two-roller mill；With short production cycle, production cost is low, but dimension control is low compared with multiple roll, and surface is moistened
Lubrication prescription requires high.Premenstruum (premenstrua) engineer testing determines, using two roller coggings, the technique that finished product is produced by two-roller mill, there have to be suitable
Surface lubricant proportioning is selected, and more rational pass repairs curve, can produce dimensional accuracy and outer surface quality is fully met
It is required that tubing, while shorten the production cycle, reduce production cost.Φ 25 × 2mm rolling mill practices of pipe are：Φ80×9mm
→Φ70 ×7mm→Φ50×4.5mm→Φ36×3.2mm→Φ25×2mm。
Above-mentioned pipe processing is related to cold working：The technique that cold working is carried out mainly for 25 × 2mm of Φ specifications gropes to test,
Work is as follows：1st, different working moduluses, the organization and performance relation experiment under identical annealing schedule；2nd, identical working modulus, difference are moved back
Organization and performance relation experiment under fiery system.
The pipe heat treatment process of cold working, under identical working modulus, the relation of different annealing temperature and structure property, such as schemes
Shown in 1- Fig. 5, Fig. 1 is 36 × 3.2mm of Φ × 200 650 DEG C × 1h, and Fig. 2 is 36 × 3.2mm of Φ × 200 700 DEG C × 1h, figure
3 be 36 × 3.2mm of Φ × 200 750 DEG C × 1h, and Fig. 4 is 36 × 3.2mm of Φ × 200 800 DEG C × 1h, Fig. 5 be Φ 36 ×
3.2mm×200 850℃×1h.Different working moduluses, the relation of identical annealing temperature and structure property, such as Fig. 8-such as Figure 13 institutes
Show, Fig. 8 is that (700 DEG C × 3h) × 200 working moduluses of Φ 25 × 2 ε=56%, Fig. 9 are that Φ 25 × 2 (750 DEG C × 3h) × 200 adds
Work rate ε=56%, Figure 10 are that (700 DEG C × 3h) × 200 working moduluses of Φ 70 × 7.5 ε=27%, Figure 11 are Φ 70 × 7.5 (750
DEG C × 3h) × 200 working modulus ε=27%, Figure 12 be (700 DEG C × 3h) × 200 working moduluses of Φ 36 × 3.2 ε=83%, Tu13Shi
Φ 50 × 4.5 (700 DEG C × 3h) × 200 working modulus ε=67%.
Under identical working modulus, the relation of different annealing temperature and structure property, NICU30 tubing annealing temperature is closed with tissue
Fig. 1-Fig. 5 sees in system；Different working moduluses, the relation of identical annealing temperature and structure property, NiCu30 tubing annealing temperature and tissue
Relation see Fig. 8-Figure 13, as seen from the figure：(1) when working modulus is 50% or so, the recrystallization annealing temperature of NiCu30 alloys exists
Between 650~700 DEG C；(2) anneal in 700 DEG C × 1h, the perfect recrystallization of NiCu30 alloys.So as to draw with annealing
The rise of temperature, crystallite dimension is gradually being grown up, but still disclosure satisfy that requirement.Equipment for Heating Processing：Resistance-heated furnace；By Fig. 6, figure
7 as it can be seen that with the rise of annealing temperature, tensile strength Rm is reduced to 485MPa by 640MPa；Annealing temperature for 800~700 DEG C it
Between, its tensile strength is relatively small in 495~570MPa, change；Yield strength Rp0.2 is reduced to 205MPa by 225MPa；Extension
Rate A50 is upgraded to 39.5% by 36.5%.Annealing temperature yield strength between 700~800 DEG C has a more stable numerical value, but moves back
Its intensity substantially reduces when fiery temperature is higher than 800 DEG C, its plasticity index is without notable rise；Therefore, NiCu30 alloy pipes are again
It is 650~850 DEG C to crystallize heat treatment temperature.Equipment for Heating Processing：Vacuum annealing furnace；As shown in Figure 14, Figure 15, draw identical
Under annealing temperature, different working moduluses, size, the number of die difference of crystal grain.Working modulus is more than 80% and is less than 30% with working modulus,
The tissue crystal grain obtained is all thicker.On the contrary, working modulus in the range of 30~80%, obtains more uniform tiny crystal grain.Move back
The relation of fiery temperature and performance, as shown in Figure 14, Figure 15, show that working modulus is less than 30%, more than 80%, room temperature strength is all gradual
Reduce, same elongation percentage is gradually lowered；Working modulus has a comparatively ideal Performance Match in the range of 30~80%.
Finally, obtained above-mentioned pipe processing is related to acid cleaning process, in order to remove cold working surface lubrication layer and annealed
Aoxidize, pollute caused by surface in journey, 5 must be the results are shown in Table by being tested through tens of times repeatedly：
Obtained by table 5：1st, cold working surface lubrication layer presses acid solution proportioning in table 5 and obtains preferable surface quality；2nd, aoxidize
Surface obtains preferable surface quality under vacuum annealing state, by acid solution proportioning in table, to be reduced compared with size before pickling
0.05mm or so；3rd, under air annealed condition, pipe outer surface oxide layer can not be removed by acid solution proportioning in table.
Study to obtain by process above to draw a conclusion：1st, NiCu30 tubular object extrudings process route basic feasible solution；2nd, pipe
Specification：A diameter of Φ 215mm, length are >=450mm, and penetration hole diameter is Φ 75mm, and heating-up temperature is 1200 DEG C, and soaking time is
10 minutes, perforation ingot blank is obtained, counter bore diameter is Φ 85mm；3rd, lubricated using glass dust, in extrude at a slow speed, 86 × 9mm of Φ and
80 × 9mm of Φ, obtain pipe；4th, billet production uses two roller coggings, and the technique that finished product is produced by two-roller mill, obtains tubing；
5th, the dynamic recrystallization treatment temperature of NiCu30 alloy pipes is 650~850 DEG C；6th, under identical annealing temperature, working modulus is 30
In the range of~80%, more uniform tiny crystal grain is obtained.
Claims (8)
1. a kind of NiCu30 alloy pipes processing technology, the pipe chemical composition of the alloy pipe processing technology is Fe1.55%,
C0.05%, S ＜ 0.005%, Si0.04%, Mn1.13%, Cu28.9%, pipe diameter of phi 215mm, length >=450mm, pipe pass through
Blank ingot casting shaping；It is characterized in that the pipe passes sequentially through extrusion process, cold working, pickling process to obtain finished product, it is cold plus
Work includes tube rolling and heat treatment, and the tubing of finished product is 25 × 2mm of Φ；The flow of the extrusion-processing technology is specific as follows：
Light ingot → heating → perforates → strips off the skin, and → scale → alkali cleaning → pickling → inspection is aligned → cut in reaming → heating → extruding → → turns
Material.
2. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that the extrusion-processing technology
Perforation, reaming, heating are specific as follows：Penetration hole diameter is Φ 75mm, and heating-up temperature is 1200 DEG C, and soaking time is 10 minutes, is obtained
To ingot blank, counter bore diameter is Φ 85mm.
3. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that the extrusion-processing technology is adopted
Lubricated with glass dust, 1150 DEG C of heating-up temperature, keep the temperature 10 minutes, in extrude at a slow speed, obtain pipe.
4. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that the pipe of the cold working rolls
Flow processed is specific as follows：Using two roller coggings, finished product is produced by two-roller mill, and surface smear lubricant during production, repairs pass
Curve.
5. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that 25 × 2mm of Φ of the pipe
Rolling mill practice is：Φ80×9mm→Φ70×7mm→Φ50×4.5mm→Φ36×3.2mm→Φ25×2mm.
6. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that the pipe heat of the cold working
Treatment process first passes through resistance heating stove heat, then is annealed by vacuum annealing furnace, and recrystallization annealing temperature temperature is 650~850
Between DEG C, anneal in 700 DEG C × 1h, perfect recrystallization, obtains the tubing that working modulus is 30~80%.
7. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that tubing in the acid cleaning process
Cold working surface in HNO310%、H2O and 3% chromic acid carry out pickling 3 minutes.
8. NiCu30 alloy pipes processing technology according to claim 1, it is characterised in that tubing in the acid cleaning process
Vacuum annealing surface in HNO310-15%、H2O and 3-5% potassium chromates carry out pickling 5-6 minutes, and surfaces externally and internally removes removing oxide layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142576.1A CN108034859A (en) | 2017-11-17 | 2017-11-17 | NiCu30 alloy pipe processing technologys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142576.1A CN108034859A (en) | 2017-11-17 | 2017-11-17 | NiCu30 alloy pipe processing technologys |
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ID=62092814
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101371A (en) * | 2021-11-09 | 2022-03-01 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
| WO2024106226A1 (en) * | 2022-11-14 | 2024-05-23 | 日本冶金工業株式会社 | Ni-Cu ALLOY WITH EXCELLENT SURFACE PROPERTIES AND PRODUCTION METHOD THEREFOR |
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| US20020079029A1 (en) * | 2000-12-22 | 2002-06-27 | Ling Yang | Heat treatment process |
| CN102463273A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Preparation method of heavy-calibre nickel base alloy thin-walled tubular product |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
| CN103817168A (en) * | 2014-02-21 | 2014-05-28 | 无锡隆达金属材料有限公司 | Drawing production process of monel alloy pipe |
| CN105331913A (en) * | 2015-12-09 | 2016-02-17 | 兰州理工大学 | Method for thermally extruding and deforming high-temperature alloy Inconel 625 pipe through short process |
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2017
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Patent Citations (5)
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|---|---|---|---|---|
| US20020079029A1 (en) * | 2000-12-22 | 2002-06-27 | Ling Yang | Heat treatment process |
| CN102463273A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Preparation method of heavy-calibre nickel base alloy thin-walled tubular product |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101371A (en) * | 2021-11-09 | 2022-03-01 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
| CN114101371B (en) * | 2021-11-09 | 2023-05-30 | 中铝洛阳铜加工有限公司 | Processing method of large-caliber thick-wall copper pipe for annular conduction band |
| WO2024106226A1 (en) * | 2022-11-14 | 2024-05-23 | 日本冶金工業株式会社 | Ni-Cu ALLOY WITH EXCELLENT SURFACE PROPERTIES AND PRODUCTION METHOD THEREFOR |
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