CN103801577A - Processing method of nickel and nickel alloy tubular products - Google Patents
Processing method of nickel and nickel alloy tubular products Download PDFInfo
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- CN103801577A CN103801577A CN201210440814.8A CN201210440814A CN103801577A CN 103801577 A CN103801577 A CN 103801577A CN 201210440814 A CN201210440814 A CN 201210440814A CN 103801577 A CN103801577 A CN 103801577A
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Abstract
The invention provides a processing method of nickel and nickel alloy tubular products, and belongs to the field of material processing. The processing method comprises following steps: a prepared raw material is subjected to melting in a vacuum melting furnace at a temperature of 2150 to 2750 DEG C; the melted raw material is injected into a graphite mould so as to obtain round rod-shaped ingot casting; the round rod-shaped ingot casting is cooled, is subjected to outer surface lathing so as to remove an outer rough layer, and is provided with a central hole along the central axis; the round rod-shaped ingot casting provided with the central hole is heated to a temperature of 800 to 1250 DEG C, and the temperature is maintained so as to realize complete roasting; the roasted round rod-shaped ingot casting is delivered into a large-tonnage extruding machine so as to obtain tube blank via extruding; the obtained tube blank is subjected to a plurality of times of oil removing and grease removing, vacuum annealing at a temperature of 550 to 950 DEG C, and rolling according to practically needed tubular product specification until the quality of an obtained product is close to demands on the finished tubular products; the obtained product is subjected to a last time of rolling or drawing so as to achieve practical dimensional precision, and then is subjected to straightening; the rolled head and the tail end of a straightened tubular product are cut off using a lathe; and then the tubular product is subjected to deburring and cleaning. The processing method is simple; yield is high; and quality of the prepared tubular products is stable and reliable.
Description
Technical field
The present invention relates to a kind of technological method for processing of metal pipe material, relate to specifically a kind of technological method for processing of nickel and nickel alloy tube material.
Background technology
Nickel and to be widely used in Aero-Space, shipbuilding, ocean engineering, military project nuclear power, petroleum and petrochemical industry, bio-pharmaceuticals etc. multi-field as main nickel alloy tubing take Ni-based.Nickel and nickel alloy tube material has higher mechanical property, good extension plastic working and machinability preferably, seawater, sulfuric acid, caustic alkali, most of organic acid etc. are had to very strong decay resistance, are the requisite corrosion resistant tubing of high-end industrial equipment selection raw materials.Nickel and nickel alloy tube material is because of its exclusive high content nickel base element, processing technology and common metal tubing are processed with larger difference, be difficult to produce the nickel tubing of dependable performance and better quality by melting, extruding, rolling, drawing or the welding processing of common tubing, and lumber recovery is extremely low.
Summary of the invention
Produce at present nickel and nickel alloy tube material, also do not have mature and stable especially process, this process has solved the practical processing technology of nickel and nickel alloy tube material.
Object of the present invention, be to provide a kind of technological method for processing of nickel and nickel alloy tube material, solved the practical application technical problem of nickel and nickel alloy tube material, this process technique is simple, lumber recovery is high, the nickel and nickel alloy tube material stable performance of production, reliable in quality.
The object of the present invention is achieved like this, and its processing step is: first, the Ni-based raw material that choosing is got ready are heated to 2150～2750 ℃ and carry out melting in vacuum melting furnace, is poured into and in cylindrical die, becomes round bar shape ingot casting through the nickel of fully melting or nickel alloy; Secondly, take out cooled round bar shape ingot casting, lathe get on the bus the thick crust exasperate of 2mm, bore the centre bore of Ф 50 along central shaft; Then, to car cross crust, drilled ingot casting heats again, heating-up temperature is controlled between 800～1250 ℃ according to the difference of nickel or nickel alloy, sends into and in extruder, is squeezed into raw material pipe adding hollow cast ingot that heat penetration burns; Then, the raw material pipe of extrusion modling tubing specification is according to actual needs carried out to multi-pass oil removing grease removal, vacuum annealing, rolling until approach desired production tube specification, each vacuum annealing temperature is controlled between 550～950 ℃; Then, to approaching, the tubing of production tube carries out last rolling or drawing reaches actual dimension precision requirement, the rolling that reaches required precision is crossed to drawing pipes and after straightening, cut on lathe on straightener again dog and the end section of tubing; Finally to tubing, deburring is leveled.Technological method for processing of the present invention, process is simple, the parameters such as temperature are easily controlled, the nickel and nickel alloy tube material mechanical property that is processed into, dimensional accuracy, surface quality etc. meet the application requirements such as current petrochemical industry, military project and Nuclear Power Industry completely, the pipe material product rate of becoming a useful person of producing can reach more than 85%, has higher economic and social benefit.
The specific embodiment
Below by embodiment, the invention will be further described.
Embodiment 1. produces the pure nickel N6 pipe of Ф 25x1x6000.The sheet nickel of standard is cut into the several sections of fritters that are suitable for vacuum drying oven melting, enough fritter electrolytic nickel material are added in vacuum melting furnace crucible, and the graphite jig of getting 10～20 covers ready is in vacuum tank, seal vacuum retort, unlatching vavuum pump vacuumizes to be processed until the interior vacuum of stove reaches within the scope of 2～10Pa, starting afterwards heating system makes body of heater be warming up to 2550 ℃ ± 100 ℃ nickel metal in crucible is carried out to melting, smelting time is 2.5～3 hours, after melting, the nickel water of melting is injected into respectively in each graphite jig, close heating control system, allow the interior ingot casting of mould be cooled to 200 ℃ to come out of the stove below with stove, remove the pole ingot casting that each graphite jig obtains Ф 200x500, remove the pole ingot casting crust exasperate of 2mm and bore the centre bore of Ф 50 at pole ingot casting along central shaft with lathe car, car is crossed to crust, the hollow cast ingot that bored the Ф 196x72x500 obtaining after centre bore reheats to 1.5 hours fully saturating burnings of 1050 ℃ ± 100 ℃ insulations, adding the hollow cast ingot that heat penetration burns sends in 2000T extruder and pushes, be squeezed into the pipe that specification is Ф 80x10, the pipe of Ф 80x10 is sent into the two cold mills of LG60 and carry out the rolling of the first passage, be rolled into the strip plate that specification is Ф 60x7.5, the strip plate of Ф 60x7.5 is cleaned to the grease removal of deoiling, the Ф 60x7.5 strip plate deoiling after grease removal is annealed 1.5 hours in 800 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 180 ℃ and comes out of the stove below and send into equally the two cold mills of LG60 and carry out the second passage rolling, be rolled into the strip plate that specification is Ф 45x5, the strip plate of Ф 45x5 is cleaned to the grease removal of deoiling, the Ф 45x5 strip plate deoiling after grease removal is annealed 1 hour in 800 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 100 ℃ and comes out of the stove below and send into LG30 cold-rolling mill and carry out the 3rd passage rolling, be rolled into the strip plate that specification is Ф 30x2.5, the strip plate of Ф 30x2.5 is cleaned to the grease removal of deoiling, the Ф 30x2.5 strip plate deoiling after grease removal is annealed 40 minutes in 800 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 180 ℃ and comes out of the stove below and send into the two cold mills of LG30 and carry out four-pass rolling, finally be rolled into the N6 nickel pipe of specification Ф 25x1, by the N6 nickel pipe straightening of Ф 25x1 good rolling, after straightening, on lathe, cut tail end, then disconnected by undercut on lathe by length 6000, finally the every tube end having cut off is leveled to the pure nickel N6 production tube that obtains Ф 25x1x6000 with clear burring machine deburring.
Embodiment 2. produces the monel metal pipe (NCu28-2.5-1.5) of Ф 17x0.9x2000.By the sheet nickel of standard, electrolysis copper coin is cut into the several sections of fritters that are suitable for vacuum drying oven melting, by enough appropriate fritter electrolytic nickel material, cathode copper material and meet the manganese of material content requirement, iron material piece adds in vacuum melting furnace crucible, and the graphite jig of getting 10～20 covers ready is in vacuum tank, seal vacuum retort, unlatching vavuum pump vacuumizes to be processed until the interior vacuum of stove reaches within the scope of 2～10Pa, starting afterwards heating system makes body of heater be warming up to 2500 ℃ ± 100 ℃ nickel metal in crucible is carried out to melting, smelting time is 2.5～3 hours, after melting, the nickel alloy water of melting is injected into respectively in each graphite jig, close heating control system, allow the interior ingot casting of mould be cooled to 200 ℃ to come out of the stove below with stove, remove the pole ingot casting that each graphite jig obtains Ф 200x500, remove the pole ingot casting crust exasperate of 2mm and bore the centre bore of Ф 50 at pole ingot casting along central shaft with lathe car, car is crossed to crust, the hollow cast ingot that bored the Ф 196x72x500 obtaining after centre bore reheats to 1.5 hours fully saturating burnings of 1050 ℃ ± 100 ℃ insulations, adding the hollow cast ingot that heat penetration burns sends in 2000T extruder and pushes, be squeezed into the pipe that specification is Ф 80x10, the pipe of Ф 80x10 is sent into the two rod cold-rolling mills of LG60 and carry out the rolling of the first passage, be rolled into the strip plate that specification is Ф 60x7.5, the strip plate of Ф 60x7.5 is cleaned to the grease removal of deoiling, the Ф 60x7.5 strip plate deoiling after grease removal is annealed 1.5 hours in 750 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 100 ℃ and comes out of the stove below and send into equally the two cold mills of LG60 and carry out the second passage rolling, be rolled into the strip plate that specification is Ф 45x5, the strip plate of Ф 45x5 is cleaned to the grease removal of deoiling, the Ф 45x5 strip plate deoiling after grease removal is annealed 1 hour in 750 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 100 ℃ and comes out of the stove below and send into the two cold mills of LG30 and carry out the 3rd passage rolling, be rolled into the strip plate that specification is Ф 30x2.5, the strip plate of Ф 30x2.5 is cleaned to the grease removal of deoiling, the Ф 30x2.5 strip plate deoiling after grease removal is annealed 40 minutes in 700 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 180 ℃ and comes out of the stove below and send into the two cold mills of LG30 and carry out four-pass rolling, be rolled into the strip plate pipe of specification Ф 20x1, the strip plate pipe of Ф 20x1 is cleaned to the grease removal of deoiling, the Ф 20x1 strip plate deoiling after grease removal is annealed 30 minutes in 700 ℃ ± 50 ℃ in vacuum annealing furnace, treat that vacuum annealing furnace is cooled to 180 ℃ and comes out of the stove below, Ф 20x1 strip plate grinds the dog of the long 150mm of system left and right on a system machine after coming out of the stove, the stretching-machine that dog is penetrated to Ф 15.2 core bars by the external mold of Ф 17 and afterbody are housed is once drawn into the monel metal pipe of Ф 17x0.9, by the monel metal pipe straightening of Ф 17x0.9 good drawing, after straightening, on lathe, cut tail end, then disconnected by undercut on lathe by length 2000mm, finally the every tube end having cut off is leveled to the monel metal production tube that obtains Ф 17x0.9x2000 with clear burring machine deburring.
Claims (9)
1. a technological method for processing for nickel and nickel alloy tube, is characterized in that successively step is according to the order of sequence: select materials, vacuum melting casting pole ingot, outer railway carriage internal drilling, the heating of pole ingot, extruding ejection, oil removing grease removal, annealing, rolling, rolling or be drawn to the technical process that trimmed size, straightening, cutting are decaptitated, leveled.
2. the technological method for processing of nickel and nickel alloy tube according to claim 1, is characterized in that vacuum melting temperature is 2150～2750 ℃.
3. the technological method for processing of nickel and nickel alloy tube according to claim 1, is characterized in that vacuum melting ingot casting is pole shape.
4. the technological method for processing of nickel and nickel alloy tube according to claim 1, is characterized in that pole ingot casting boring aperture is 30～100mm.
5. the technological method for processing of nickel and nickel alloy tube according to claim 1, the hollow pole base heating-up temperature that it is characterized in that pushing before ejection is 800～1250 ℃.
6. the technological method for processing of nickel and nickel alloy tube according to claim 1, it is characterized in that pushing the extruder that ejection uses is large-tonnage extruder more than 1500T.
7. the technological method for processing of nickel and nickel alloy tube according to claim 1, it is characterized in that oil removing grease removal, annealing, rolling three process according to the final finished specification difference of actual nickel and nickel alloy tube repeatedly multi-pass carry out.
8. the technological method for processing of nickel and nickel alloy tube according to claim 1, is characterized in that being annealed into vacuum annealing, and annealing temperature is 550～950 ℃.
9. the technological method for processing of nickel and nickel alloy tube according to claim 1, it is characterized in that cutting is decaptitated carries out on lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210440814.8A CN103801577A (en) | 2012-11-08 | 2012-11-08 | Processing method of nickel and nickel alloy tubular products |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210440814.8A CN103801577A (en) | 2012-11-08 | 2012-11-08 | Processing method of nickel and nickel alloy tubular products |
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| CN103801577A true CN103801577A (en) | 2014-05-21 |
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| CN201210440814.8A Pending CN103801577A (en) | 2012-11-08 | 2012-11-08 | Processing method of nickel and nickel alloy tubular products |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104476128A (en) * | 2014-11-21 | 2015-04-01 | 西安邦信特种金属材料科技有限公司 | Method of manufacturing high-temperature alloy pipe blanks |
| CN106807794A (en) * | 2015-12-08 | 2017-06-09 | 中南大学 | The determination method of nickel base superalloy Hot Extrusion Parameters and the hot extrusion technique of nickel base superalloy |
| CN110743931A (en) * | 2019-10-29 | 2020-02-04 | 浙江国邦钢业有限公司 | High-strength NS1402 nickel-based alloy seamless pipe and preparation process thereof |
| CN110935743A (en) * | 2019-12-12 | 2020-03-31 | 西安圣泰金属材料有限公司 | Preparation method of titanium alloy hollow bar |
| CN113649431A (en) * | 2021-08-12 | 2021-11-16 | 江苏隆达超合金股份有限公司 | Nickel pipe for aviation nacelle and manufacturing process thereof |
| CN119387343A (en) * | 2024-12-11 | 2025-02-07 | 江苏银环精密钢管有限公司 | A method for manufacturing a small-diameter nickel-copper alloy seamless heat exchange tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104476128A (en) * | 2014-11-21 | 2015-04-01 | 西安邦信特种金属材料科技有限公司 | Method of manufacturing high-temperature alloy pipe blanks |
| CN106807794A (en) * | 2015-12-08 | 2017-06-09 | 中南大学 | The determination method of nickel base superalloy Hot Extrusion Parameters and the hot extrusion technique of nickel base superalloy |
| CN106807794B (en) * | 2015-12-08 | 2019-03-08 | 中南大学 | Determination method of hot extrusion process parameters of nickel-based superalloy and hot extrusion process of nickel-based superalloy |
| CN110743931A (en) * | 2019-10-29 | 2020-02-04 | 浙江国邦钢业有限公司 | High-strength NS1402 nickel-based alloy seamless pipe and preparation process thereof |
| CN110743931B (en) * | 2019-10-29 | 2021-02-05 | 浙江国邦钢业有限公司 | High-strength NS1402 nickel-based alloy seamless pipe and preparation process thereof |
| CN110935743A (en) * | 2019-12-12 | 2020-03-31 | 西安圣泰金属材料有限公司 | Preparation method of titanium alloy hollow bar |
| CN110935743B (en) * | 2019-12-12 | 2021-04-27 | 西安圣泰金属材料有限公司 | Preparation method of titanium alloy hollow bar |
| CN113649431A (en) * | 2021-08-12 | 2021-11-16 | 江苏隆达超合金股份有限公司 | Nickel pipe for aviation nacelle and manufacturing process thereof |
| CN119387343A (en) * | 2024-12-11 | 2025-02-07 | 江苏银环精密钢管有限公司 | A method for manufacturing a small-diameter nickel-copper alloy seamless heat exchange tube |
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Application publication date: 20140521 |