CN104152809A - Alloy mandrel and preparation method thereof - Google Patents
Alloy mandrel and preparation method thereof Download PDFInfo
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- CN104152809A CN104152809A CN201410337992.7A CN201410337992A CN104152809A CN 104152809 A CN104152809 A CN 104152809A CN 201410337992 A CN201410337992 A CN 201410337992A CN 104152809 A CN104152809 A CN 104152809A
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Abstract
The invention discloses an alloy mandrel and a preparation method thereof. The mandrel is manufactured through the steps of material blending, smelting, refining, casting, falling sand cleanup, saw cutting, forging and thermal treatment; the mandrel is composed of 10-14% of nickel, 17-21% of chromium, 9-12% of molybdenum, 0-0.5% of manganese, 1.2-2.0% of titanium, 0.2-0.5% of vanadium, 0.01-0.02% of aluminum, 0.01-0.1% of carbon and the balance of iron, as well as less than or equal to 0.5% of impurities, in percentage by weight. The alloy mandrel is used for solving the problems of low strength and poor wear resistance of the mandrel.
Description
Technical field
The present invention relates to a kind of plug, related in particular to a kind of alloy plug and preparation method thereof.
Background technology
Pipe-making method uses plug as shaping jig in the inside of pipe, so plug must be able to hold out against the power of producing from external tool and be unlikely to distortion, this intensity and snappiness to plug has very high requirement.
Summary of the invention
The deficiency existing for prior art, object of the present invention is just to provide a kind of alloy plug and preparation method thereof, has solved the low problem with wearing no resistance of mandril strength.
To achieve these goals, the technical solution used in the present invention is such:
A kind of alloy plug, consisting of of described mandrel material: nickel 10 ~ 14%, chromium 17 ~ 21%, molybdenum 9 ~ 12%, manganese 0 ~ 0.5%, titanium 1.2 ~ 2.0%, vanadium 0.2 ~ 0.5%, aluminium 0.01 ~ 0.02%, carbon 0.01 ~ 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage.
A preparation method for alloy plug, comprises the following steps:
(1) batching: prepare burden by the composition of plug, and make finally consisting of of described mandrel material: nickel 10 ~ 14%, chromium 17 ~ 21%, molybdenum 9 ~ 12%, manganese 0 ~ 0.5%, titanium 1.2 ~ 2.0%, vanadium 0.2 ~ 0.5%, aluminium 0.01 ~ 0.02%, carbon 0.01 ~ 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage;
(2) in vacuum oven crucible, add successively electrolytic nickel, chromium metal, manganese metal, molybdenum bar and carbon steel, after intensification fusing, in Feeding box, add titanium sponge, aluminium ingot and vanadium metal, the vacuum tightness of vacuum induction furnace is 0.5 ~ 1.0MPa, and smelting temperature is 1550-1650 DEG C, forms molten metal;
(3) refining: the molten metal of step (2) is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed, reductor is added on the liquid level of molten metal, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen metallic reducing out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(4) repeating step (3), until the mass parts of the inclusion containing in molten metal is without obviously reducing or having reached minimum;
(5) by pouring metal melt in mould, form ingot casting, pouring temperature is 1400-1450 DEG C;
(6) peeling: when the ingot casting in step (5) is cooled to 400 ~ 500 DEG C by the time, first make ingot casting separate with sandbox, then make it separate with molding sand; Then except watering, rising head, remove remaining core sand, remove scab, burr, the oxide skin on ingot casting surface;
(7) by ingot casting sawing, the forging of step (6), metalworking obtains plug; The temperature of forging is 1150-1180 DEG C;
(8) plug of step (7) is heat-treated: plug is put into electric furnace, according to not being warming up to 800-850 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 980-1020 DEG C higher than 88 DEG C/h, after insulation 3.5-4h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C; Return in electric furnace and be warming up to 625-635 DEG C, carry out low-temperaturetempering processing, after insulation 2h, the air cooling of coming out of the stove.
Compared with prior art, beneficial effect of the present invention:
1. there is good forgeability, in the process of manufacturing plug, through heating hammering, do not find crack defect;
2. under the condition of high temperature, mechanical property is good, can improve the work-ing life of plug, reduces production costs.
Embodiment
Below with reference to specific embodiment, technical scheme provided by the invention is elaborated, should understands following embodiment and only be not used in and limit the scope of the invention for the present invention is described.
Embodiment 1:
A kind of alloy plug, the consisting of of described mandrel material: nickel 10%, chromium 17%, molybdenum 9%, manganese 0.1%, titanium 1.2%, vanadium 0.2%, aluminium 0.01%, carbon 0.01% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage.
A preparation method for alloy plug, comprises the following steps:
(1) batching: prepare burden by the composition of plug, and make finally consisting of of described mandrel material: nickel 10%, chromium 17%, molybdenum 9%, manganese 0.1%, titanium 1.2%, vanadium 0.2%, aluminium 0.01%, carbon 0.01% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage;
(2) in vacuum oven crucible, add successively electrolytic nickel, chromium metal, manganese metal, molybdenum bar and carbon steel, after intensification fusing, in Feeding box, add titanium sponge, aluminium ingot and vanadium metal, the vacuum tightness of vacuum induction furnace is 1.0MPa, and smelting temperature is 1550 DEG C, forms molten metal;
(3) refining: the molten metal of step (2) is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed, reductor is added on the liquid level of molten metal, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen metallic reducing out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(4) repeating step (3), until the mass parts of the inclusion containing in molten metal is without obviously reducing or having reached minimum;
(5) by pouring metal melt in mould, form ingot casting, pouring temperature is 1400 DEG C;
(6) peeling: when the ingot casting in step (5) is cooled to 400 DEG C by the time, first make ingot casting separate with sandbox, then make it separate with molding sand; Then except watering, rising head, remove remaining core sand, remove scab, burr, the oxide skin on ingot casting surface;
(7) by ingot casting sawing, the forging of step (6), metalworking obtains plug; The temperature of forging is 1150 DEG C;
(8) plug of step (7) is heat-treated: plug is put into electric furnace, according to not being warming up to 800 DEG C higher than the speed of 72 DEG C/h, insulation 4h, stove is chilled to room temperature; According to not being warming up to 980 DEG C higher than 88 DEG C/h, after insulation 3.5h, come out of the stove, at the quenching-in water to 270 DEG C of 55 DEG C again; Return in electric furnace and be warming up to 625 DEG C, carry out low-temperaturetempering processing, after insulation 2h, the air cooling of coming out of the stove.
Embodiment 2:
A kind of alloy plug, the consisting of of described mandrel material: nickel 14%, chromium 21%, molybdenum 12%, manganese 0.5%, titanium 2.0%, vanadium 0.5%, aluminium 0.02%, carbon 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage.
A preparation method for alloy plug, comprises the following steps:
(1) batching: prepare burden by the composition of plug, and make finally consisting of of described mandrel material: nickel 14%, chromium 21%, molybdenum 12%, manganese 0.5%, titanium 2.0%, vanadium 0.5%, aluminium 0.02%, carbon 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage;
(2) in vacuum oven crucible, add successively electrolytic nickel, chromium metal, manganese metal, molybdenum bar and carbon steel, after intensification fusing, in Feeding box, add titanium sponge, aluminium ingot and vanadium metal, the vacuum tightness of vacuum induction furnace is 0.5MPa, and smelting temperature is 1650 DEG C, forms molten metal;
(3) refining: the molten metal of step (2) is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed, reductor is added on the liquid level of molten metal, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen metallic reducing out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(4) repeating step (3), until the mass parts of the inclusion containing in molten metal is without obviously reducing or having reached minimum;
(5) by pouring metal melt in mould, form ingot casting, pouring temperature is 1450 DEG C;
(6) peeling: when the ingot casting in step (5) is cooled to 500 DEG C by the time, first make ingot casting separate with sandbox, then make it separate with molding sand; Then except watering, rising head, remove remaining core sand, remove scab, burr, the oxide skin on ingot casting surface;
(7) by ingot casting sawing, the forging of step (6), metalworking obtains plug; The temperature of forging is 1180 DEG C;
(8) plug of step (7) is heat-treated: plug is put into electric furnace, according to not being warming up to 850 DEG C higher than the speed of 72 DEG C/h, insulation 5h, stove is chilled to room temperature; According to not being warming up to 1020 DEG C higher than 88 DEG C/h, after insulation 4h, come out of the stove, at the quenching-in water to 350 DEG C of 70 DEG C again; Return in electric furnace and be warming up to 635 DEG C, carry out low-temperaturetempering processing, after insulation 2h, the air cooling of coming out of the stove.
From embodiment 1, embodiment 2, plug resistance to elevated temperatures of the present invention is good, and intensity height does not lose again toughness simultaneously.
Finally it should be noted that, above embodiment is the non-limiting technical scheme in order to technical scheme of the present invention to be described only, those of ordinary skill in the art is to be understood that, those are modified or are equal to replacement technical scheme of the present invention, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (2)
1. an alloy plug, it is characterized in that, consisting of of described mandrel material: nickel 10 ~ 14%, chromium 17 ~ 21%, molybdenum 9 ~ 12%, manganese 0 ~ 0.5%, titanium 1.2 ~ 2.0%, vanadium 0.2 ~ 0.5%, aluminium 0.01 ~ 0.02%, carbon 0.01 ~ 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage.
2. a preparation method who prepares alloy plug described in claim 1, is characterized in that, comprises the following steps:
(1) batching: prepare burden by the composition of plug, and make finally consisting of of described mandrel material: nickel 10 ~ 14%, chromium 17 ~ 21%, molybdenum 9 ~ 12%, manganese 0 ~ 0.5%, titanium 1.2 ~ 2.0%, vanadium 0.2 ~ 0.5%, aluminium 0.01 ~ 0.02%, carbon 0.01 ~ 0.1% and all the other are iron, content≤0.5% of impurity in this mandrel material; Unit is weight percentage;
(2) in vacuum oven crucible, add successively electrolytic nickel, chromium metal, manganese metal, molybdenum bar and carbon steel, after intensification fusing, in Feeding box, add titanium sponge, aluminium ingot and vanadium metal, the vacuum tightness of vacuum induction furnace is 0.5 ~ 1.0MPa, and smelting temperature is 1550-1650 DEG C, forms molten metal;
(3) refining: the molten metal of step (2) is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed, reductor is added on the liquid level of molten metal, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen metallic reducing out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(4) repeating step (3), until the mass parts of the inclusion containing in molten metal is without obviously reducing or having reached minimum;
(5) by pouring metal melt in mould, form ingot casting, pouring temperature is 1400-1450 DEG C;
(6) peeling: when the ingot casting in step (5) is cooled to 400 ~ 500 DEG C by the time, first make ingot casting separate with sandbox, then make it separate with molding sand; Then except watering, rising head, remove remaining core sand, remove scab, burr, the oxide skin on ingot casting surface;
(7) by ingot casting sawing, the forging of step (6), metalworking obtains plug; The temperature of forging is 1150-1180 DEG C;
(8) plug of step (7) is heat-treated: plug is put into electric furnace, according to not being warming up to 800-850 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 980-1020 DEG C higher than 88 DEG C/h, after insulation 3.5-4h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C; Return in electric furnace and be warming up to 625-635 DEG C, carry out low-temperaturetempering processing, after insulation 2h, the air cooling of coming out of the stove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410337992.7A CN104152809B (en) | 2014-07-16 | 2014-07-16 | A kind of alloy plug |
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| CN201410337992.7A CN104152809B (en) | 2014-07-16 | 2014-07-16 | A kind of alloy plug |
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| CN104152809A true CN104152809A (en) | 2014-11-19 |
| CN104152809B CN104152809B (en) | 2016-05-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205543A (en) * | 2019-05-28 | 2019-09-06 | 共享铸钢有限公司 | A kind of casting method of high intensity austenitic stainless steel steel-casting |
| CN111876694A (en) * | 2020-08-06 | 2020-11-03 | 无锡隆达金属材料有限公司 | Saw cutting cupronickel ingot casting bar alloy saw blade and production process thereof |
| CN112139880A (en) * | 2020-08-21 | 2020-12-29 | 湖北隐冠轴业有限公司 | Geometric shape precision machining method for hollow rotating shaft of motor |
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| JPS5741351A (en) * | 1980-08-27 | 1982-03-08 | Kobe Steel Ltd | Super-hightensile steel |
| JPS60208458A (en) * | 1984-03-31 | 1985-10-21 | Shinhoukoku Seitetsu Kk | Mandrel alloy for piercing or expanding seamless steel pipe |
| JPS63274741A (en) * | 1987-05-01 | 1988-11-11 | Kawasaki Steel Corp | Austenitic stainless steel for seamless steel tube |
| CN102330025A (en) * | 2011-09-02 | 2012-01-25 | 上海大学 | High-strength low-cost steel for tandem-rolling pipe machine core rod and preparation method of high-strength low-cost steel |
| CN103526121A (en) * | 2013-10-25 | 2014-01-22 | 无锡尤斯威科石油钻具有限公司 | Anti-scratching mandrel material |
| CN103805885A (en) * | 2012-11-08 | 2014-05-21 | 无锡新三洲特钢有限公司 | Hot rolling seamless steel pipe mandrel preparation method |
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2014
- 2014-07-16 CN CN201410337992.7A patent/CN104152809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5741351A (en) * | 1980-08-27 | 1982-03-08 | Kobe Steel Ltd | Super-hightensile steel |
| JPS60208458A (en) * | 1984-03-31 | 1985-10-21 | Shinhoukoku Seitetsu Kk | Mandrel alloy for piercing or expanding seamless steel pipe |
| JPS63274741A (en) * | 1987-05-01 | 1988-11-11 | Kawasaki Steel Corp | Austenitic stainless steel for seamless steel tube |
| CN102330025A (en) * | 2011-09-02 | 2012-01-25 | 上海大学 | High-strength low-cost steel for tandem-rolling pipe machine core rod and preparation method of high-strength low-cost steel |
| CN103805885A (en) * | 2012-11-08 | 2014-05-21 | 无锡新三洲特钢有限公司 | Hot rolling seamless steel pipe mandrel preparation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205543A (en) * | 2019-05-28 | 2019-09-06 | 共享铸钢有限公司 | A kind of casting method of high intensity austenitic stainless steel steel-casting |
| CN110205543B (en) * | 2019-05-28 | 2021-08-24 | 共享铸钢有限公司 | Casting method of high-strength austenitic stainless steel cast |
| CN111876694A (en) * | 2020-08-06 | 2020-11-03 | 无锡隆达金属材料有限公司 | Saw cutting cupronickel ingot casting bar alloy saw blade and production process thereof |
| CN112139880A (en) * | 2020-08-21 | 2020-12-29 | 湖北隐冠轴业有限公司 | Geometric shape precision machining method for hollow rotating shaft of motor |
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| CN104152809B (en) | 2016-05-11 |
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Effective date of registration: 20171010 Address after: 214500 4 weft three road, Chengnan District, Jingjiang Economic Development Zone, Taizhou, Jiangsu Patentee after: Jiangsu Huayang new idea energy equipment Limited by Share Ltd Address before: 214537 4 weft three road, Chengnan District, Jingjiang Economic Development Zone, Taizhou, Jiangsu Patentee before: Jiangsu Nanshan Metallurgical Machine Mfg. Co., Ltd. |