CN101381850A - Alloyed steel plug for steel tube perforating and production method - Google Patents
Alloyed steel plug for steel tube perforating and production method Download PDFInfo
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- CN101381850A CN101381850A CNA2008101434197A CN200810143419A CN101381850A CN 101381850 A CN101381850 A CN 101381850A CN A2008101434197 A CNA2008101434197 A CN A2008101434197A CN 200810143419 A CN200810143419 A CN 200810143419A CN 101381850 A CN101381850 A CN 101381850A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 239000000956 alloy Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 9
- 238000007669 thermal treatment Methods 0.000 claims description 6
- 238000010583 slow cooling Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052702 rhenium Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 22
- 239000011651 chromium Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 229910001315 Tool steel Inorganic materials 0.000 description 5
- 230000003245 working effect Effects 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses an alloy steel plug for the piercing of a steel pipe and a manufacturing method thereof. The alloy steel plug comprises the following compositions in percentage by mass: 0.10 to 0.25 percent of C, 1.5 to 4.0 percent of Ni, 1.5 to 3.5 percent of Cr, 0.30 to 1.0 percent of Mo, 0.10 to 0.50 percent of W, 0.30 to 1.5 percent of Si, 0.20 to 1.0 percent of Mn, 0.10 to 0.50 percent of Re, less than or equal to 0.030 percent of P and S, and the balance being Fe and unavoidable impurities. The processed plug is put into a furnace with the temperature of 900 DEG C, is heated to between 1, 000 and 1, 100 DEG C, is subject to oxidation treatment after the thermal insulation for a period of time, then is reduced to 900 DEG C, and is slowly cooled to normal temperature after being taken out of the furnace to achieve the aim of eliminating the stress, a matrix of the plug after the heat treatment has a bainite structure, the surface of the matrix is a compact oxidation film, and the hardness value of the plug at normal temperature is between 38 and 41HRC.
Description
Technical field
The present invention relates to a kind of top of using when pipe is bored a hole in the seamless steel tube production field, particularly produce the material and the manufacture method of top.
Background technology
In China seamless steel tube production field, production technology of steel tube mainly is: heating of pipe blank → perforation → rolling → tube reducing → check, finishing etc.Its middle punch is an important step, all adopts the top to bore a hole, and perforating head is the indispensable instrument in the seamless steel tube production.Since the pipe temperature up to 1200 ℃ about, therefore it is stressed that perforating head will bear high temperature friction, extruding etc., requires very high to material.
At present, the heading material of rolling carbon steel and general steel alloy has 2 classes: alloy tool steel and structural alloy steel.Alloy tool steel such as H13 have the high and good characteristics of wear resistance of hot strength, but that its shortcoming is a toughness is relatively poor, easily cause top front end cracking and lose flesh, and the alloy tool steel manufacturing cost is higher, will cause the increase of steel pipe's production cost.General structural alloy steel such as 30CrNi3,35CrMo, through also using after the special oxide treatment as the top, though the hot strength of this class material is lower than alloy tool steel, but its toughness is better, result of use is better when carbon steel is bored a hole, the shortcoming of such material is to be easy to soften owing to rolling load makes the surface, top greatly when piercing alloy billet continuously, produces viscous deformation, comes directly towards work-ing life thereby greatly reduce.
Also have seamless steel tube production producer to use the 3Cr2W8V steel to make perforating head, but also exist and the same problem in 30CrNi3,35CrMo top, work-ing life is lower, about 100/of average out to.Therefore, it is very necessary to develop a kind of material is better, cost is moderate heading material.
Summary of the invention
The purpose of this invention is to provide the alloyed steel plug of a kind of nickeliferous, chromium, molybdenum, tungsten and a small amount of rare earth element, be equipped with suitable thermal treatment process, make the top have higher high temperature strength, good wear resistance and toughness, improve its work-ing life.Simultaneously, the content by the control alloying element makes the production cost of top moderate, remedies the alloy tool steel top shortcoming that toughness is relatively poor, cost is higher, also makes cost performance be better than general structural alloy steel top, reaches to be beneficial to steel pipe quantity-produced purpose.
Technical scheme of the present invention is: a kind of alloyed steel plug for steel tube perforating, composition is in quality %, specifically have: C:0.10～0.25, Ni:1.5～4.0, Cr:1.5～3.5, Mo:0.30～1.0, W:0.10～0.50, Si:0.30～1.5, Mn:0.20～1.0, Re:0.10～0.50, P and S≤0.030, all the other are Fe and unavoidable impurities.
In above-mentioned alloying element:
C:C is a carbide forming element, and certain C content can improve the intensity and the hardness of matrix, but C content height is unfavorable to the toughness of material, simultaneously, C content height is unfavorable for carrying out oxide treatment, because be unfavorable for the formation of compact oxidation layer when oxide treatment, so C is controlled at 0.10～0.25;
Ni:Ni can improve the hot strength of material, helps the formation of oxide skin;
Cr:Cr helps the formation of carbide, can improve the hot strength of material, but the Cr too high levels can make the thermal conductivity of material descend, so Cr is controlled at 1.5～3.5;
Mo: improve the intensity of material by solution strengthening, but the Mo too high levels is unfavorable for the formation of surface oxide layer, so Mo is controlled at 0.30～1.0;
W: add a small amount of W and improve the hardness of material, but the too high meeting of W content causes carbide thick, thereby the toughness of steel is descended, also be unfavorable for the formation of zone of oxidation, so W is controlled at 0.10～0.50 by solution strengthening;
Mn: can improve the hot strength of material, but the Mn too high levels reduces the thermal conductivity of steel, so Mn is controlled at 0.20～1.0;
Si: an amount of Si element can improve the cementability of surface oxide layer and matrix, can improve the high-temperature resistant tempered performance of material, but the too high meeting of Si content descends the hot strength of material, so Si is controlled at 0.30～1.5;
Re: can improve the over-all properties of material, reduce oxygen content in steel, be beneficial to the purification steel.
By adding Mo, W element, help improving the temper resistance of material, simultaneously, Mo and W element are dissolved in the sosoloid of Fe, can impel C curve to move to right, and make bainite begin transition curve and upwards pass, and help the formation of bainite.By control appropriate C, Mn, Cr, Mo content, make material have good toughness.
Another object of the present invention provides a kind of method of producing above-mentioned alloyed steel plug, and its processing method is as follows:
By alloyed steel plug composition provided by the invention requirement, at first smelting scrap steel is become molten steel, then with addition of required alloy, obtain the molten steel that composition meets the requirements, use the intermediate frequency furnace smelting molten steel then, the molten steel that intermediate frequency furnace is smelted is cast, slightly come directly towards.Thick top is carried out precision work again, obtain meeting the top of shape, size.
The present invention can also adopt electric furnace-LF-VD technology smelting molten steel, forges after the molten steel that VD technology is smelted is cast as continuously cast bloom earlier again, is slightly come directly towards.Thick top is carried out precision work again, obtain meeting the top of shape, size.Adopt electric furnace-LF-VD-continuous casting production top steel billet can improve rhythm of production greatly, and can reduce metal consumption, improve the top lumber recovery, help reducing the top production cost.
900 ℃ stove is put in the top that processes, be warming up to 1000～1100 ℃, insulation for some time is carried out oxide treatment, is cooled to 900 ℃ then, and the back slow cooling of coming out of the stove is to normal temperature, to reach the purpose that eliminates stress.Top matrix after the thermal treatment should be bainite structure, and the surface is fine and close oxide film, and normal temperature top hardness value down is: 38～41HRC.
The present invention passes through a kind of new alloyed steel plug material of design, and takes proper heat treatment technology, thereby obtains the good top of over-all properties.Can reach 300/work-ing life when bore a hole at carbon steel in this kind top, can reach 250/when steel alloy is bored a hole, and is 3 times of former head lifetime.Comprehensive, use top of the present invention to reduce the production cost of steel pipe, reduced the number of times of changing the top in the production process, help adding fast pace, improve output of steel tube, simultaneously, the top surface cracking and the phenomenon that loses flesh are less, help improving the inner surface quality of steel pipe, reduce waste product, increase economic efficiency.
Embodiment:
Embodiment one: a kind of alloyed steel plug, and composition specifically has in quality %: C:0.18, Ni:2.5, Cr:2.5, Mo:0.7, W:0.3, Si:1.0, Mn:0.6, Re:0.3, P and S≤0.02; All the other are Fe and unavoidable impurities.
By the mentioned component requirement, at first smelting scrap steel is become molten steel, then with addition of required alloy, obtain the molten steel that composition meets the requirements, use the intermediate frequency furnace smelting molten steel then, the molten steel that intermediate frequency furnace is smelted is cast, slightly come directly towards.Thick top is carried out precision work again, obtain meeting the top of shape, size.
900 ℃ stove is put in the top that processes, be warming up to 1000～1100 ℃, insulation for some time is carried out oxide treatment, is cooled to 900 ℃ then, and the back slow cooling of coming out of the stove is to normal temperature, to reach the purpose that eliminates stress.Top matrix after the thermal treatment should be bainite structure, and the surface is fine and close oxide film, and normal temperature top hardness value down is: 38～41HRC.The mechanical property of finished product top sees Table 1.
Table 1 top mechanical property
| Material | σ?s(Mpa) | σ?b(Mpa) | ak(J/cm 2) |
| The present invention | 900 | 1200 | 50 |
| 30CrNi3 | 785 | 980 | 63 |
| H13 | 1380 | 1500 | 6 |
Embodiment two: a kind of alloyed steel plug, and composition specifically has in quality %: C:0.18, Ni:2.5, Cr:2.5, Mo:0.7, W:0.3, Si:1.0, Mn:0.6, Re:0.3, P and S≤0.02; All the other are Fe and unavoidable impurities.
By the mentioned component requirement, at first smelting scrap steel is become molten steel, then with addition of required alloy, obtain the molten steel that composition meets the requirements, adopt electric furnace-LF-VD technology smelting molten steel then, forge again after the molten steel that VD technology is smelted is cast as continuously cast bloom earlier, slightly come directly towards.Thick top is carried out precision work again, obtain meeting the top of shape, size.
900 ℃ stove is put in the top that processes, be warming up to 1000～1100 ℃, for some time is carried out oxide treatment in insulation, is cooled to 900 ℃ then, the back slow cooling of coming out of the stove is to normal temperature, eliminates stress to reach
Purpose.Top matrix after the thermal treatment should be bainite structure, and the surface is fine and close oxide film, the normal temperature top
Hardness value is: 38～41HRC.The mechanical property of finished product top sees Table 2
Table 2 top mechanical property
| Material | σ?s(Mpa) | σ?b(Mpa) | ak(J/cm 2) |
| The present invention | 900 | 1200 | 50 |
| 30CrNi3 | 785 | 980 | 63 |
| H13 | 1380 | 1500 | 6 |
Adopt electric furnace-LF-VD-continuous casting production top steel billet can improve rhythm of production greatly, and can reduce metal consumption, improve the top lumber recovery, help reducing the top production cost.
Claims (3)
1, a kind of alloyed steel plug for steel tube perforating, it is characterized in that: composition is in quality %, specifically have: C:0.10～0.25, Ni:1.5～4.0, Cr:1.5～3.5, Mo:0.30～1.0, W:0.10～0.50, Si:0.30～1.5, Mn:0.20～1.0, Re:0.10～0.50, P and S≤0.030, all the other are Fe and unavoidable impurities.
2, a kind of manufacture method of alloyed steel plug for steel tube perforating as claimed in claim 1, it is characterized in that: at first smelting scrap steel is become molten steel, again with addition of required alloy, obtain the molten steel that composition meets the requirements, re-use the intermediate frequency furnace smelting molten steel, the molten steel that intermediate frequency furnace is smelted is cast, slightly come directly towards, then thick top is carried out precision work again, obtain meeting the top of shape, size; The top that processes put into 900 ℃ stove, be warming up to 1000～1100 ℃, insulation for some time is carried out oxide treatment, be cooled to 900 ℃ then, come out of the stove the back slow cooling to normal temperature, and to reach the purpose that eliminates stress, the top matrix after the thermal treatment should be bainite structure, the surface is fine and close oxide film, and normal temperature top hardness value down is: 38～41HRC.
3, a kind of manufacture method of alloyed steel plug for steel tube perforating as claimed in claim 1, it is characterized in that: at first smelting scrap steel is become molten steel, again with addition of required alloy, obtain the molten steel that composition meets the requirements, adopt electric furnace-LF-VD technology smelting molten steel then, forge again after the molten steel that VD technology is smelted is cast as continuously cast bloom earlier, slightly come directly towards, thick top is carried out precision work again, obtain meeting the top of shape, size; The top that processes put into 900 ℃ stove, be warming up to 1000～1100 ℃, insulation for some time is carried out oxide treatment, be cooled to 900 ℃ then, come out of the stove the back slow cooling to normal temperature, and to reach the purpose that eliminates stress, the top matrix after the thermal treatment should be bainite structure, the surface is fine and close oxide film, and normal temperature top hardness value down is: 38～41HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101434197A CN101381850A (en) | 2008-10-23 | 2008-10-23 | Alloyed steel plug for steel tube perforating and production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101434197A CN101381850A (en) | 2008-10-23 | 2008-10-23 | Alloyed steel plug for steel tube perforating and production method |
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| CN101381850A true CN101381850A (en) | 2009-03-11 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942610A (en) * | 2010-08-05 | 2011-01-12 | 黄贞益 | Piercing plug for hot-rolled seamless steel pipe and processing technology thereof |
| CN102337472A (en) * | 2011-09-30 | 2012-02-01 | 内蒙古包钢钢联股份有限公司 | Heat treatment method for piercing point of seamless pipe |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| CN102747299A (en) * | 2012-07-23 | 2012-10-24 | 西华大学 | High-performance bainite abrasion resistant steel for railway frog in alpine region and manufacture method |
| CN103131966A (en) * | 2013-02-07 | 2013-06-05 | 宁波市鄞州文昌金属制品有限公司 | Steel tube piercing point and preparation method thereof |
| CN103160749A (en) * | 2013-02-07 | 2013-06-19 | 宁波市鄞州文昌金属制品有限公司 | Seamless steel pipe perforating plug and manufacture method |
| CN104213069A (en) * | 2014-08-26 | 2014-12-17 | 常州宝菱重工机械有限公司 | Perforation ejecting head and surface treatment method thereof |
| CN104325259A (en) * | 2014-08-29 | 2015-02-04 | 南通市嘉业机械制造有限公司 | Manufacturing method of seamless steel pipe piercing plug |
| CN104646955A (en) * | 2014-12-18 | 2015-05-27 | 江苏皓宇合金机械有限公司 | Method for preparing 20CrNi4 piercing plug |
| CN110616364A (en) * | 2018-06-20 | 2019-12-27 | 宝山钢铁股份有限公司 | Economical seamless steel pipe top with long piercing life and manufacturing method thereof |
| CN110918842A (en) * | 2019-11-28 | 2020-03-27 | 衡阳鸿宇机械制造有限公司 | Process for preparing common seamless steel grade steel pipe by adopting 35CrMo as plug material |
| CN111069289A (en) * | 2019-12-09 | 2020-04-28 | 朗瑞(泰州)金属工具有限公司 | Novel steel pipe piercing plug and manufacturing method thereof |
| CN112501522A (en) * | 2020-11-06 | 2021-03-16 | 宁波市海曙文昌金属制品有限公司 | High-temperature-resistant piercing plug and preparation method thereof |
-
2008
- 2008-10-23 CN CNA2008101434197A patent/CN101381850A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942610A (en) * | 2010-08-05 | 2011-01-12 | 黄贞益 | Piercing plug for hot-rolled seamless steel pipe and processing technology thereof |
| CN102337472A (en) * | 2011-09-30 | 2012-02-01 | 内蒙古包钢钢联股份有限公司 | Heat treatment method for piercing point of seamless pipe |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| CN102747299A (en) * | 2012-07-23 | 2012-10-24 | 西华大学 | High-performance bainite abrasion resistant steel for railway frog in alpine region and manufacture method |
| CN103131966B (en) * | 2013-02-07 | 2015-02-25 | 宁波市鄞州文昌金属制品有限公司 | Steel tube piercing point and preparation method thereof |
| CN103160749A (en) * | 2013-02-07 | 2013-06-19 | 宁波市鄞州文昌金属制品有限公司 | Seamless steel pipe perforating plug and manufacture method |
| CN103131966A (en) * | 2013-02-07 | 2013-06-05 | 宁波市鄞州文昌金属制品有限公司 | Steel tube piercing point and preparation method thereof |
| CN103160749B (en) * | 2013-02-07 | 2015-04-22 | 宁波市鄞州文昌金属制品有限公司 | Seamless steel pipe perforating plug and manufacture method |
| CN104213069A (en) * | 2014-08-26 | 2014-12-17 | 常州宝菱重工机械有限公司 | Perforation ejecting head and surface treatment method thereof |
| CN104325259A (en) * | 2014-08-29 | 2015-02-04 | 南通市嘉业机械制造有限公司 | Manufacturing method of seamless steel pipe piercing plug |
| CN104646955B (en) * | 2014-12-18 | 2016-11-30 | 江苏皓宇合金机械有限公司 | A kind of preparation method of 20CrNi4 material perforating head |
| CN104646955A (en) * | 2014-12-18 | 2015-05-27 | 江苏皓宇合金机械有限公司 | Method for preparing 20CrNi4 piercing plug |
| CN110616364A (en) * | 2018-06-20 | 2019-12-27 | 宝山钢铁股份有限公司 | Economical seamless steel pipe top with long piercing life and manufacturing method thereof |
| CN110616364B (en) * | 2018-06-20 | 2021-08-13 | 宝山钢铁股份有限公司 | Economical seamless steel pipe top with long piercing life and manufacturing method thereof |
| CN110918842A (en) * | 2019-11-28 | 2020-03-27 | 衡阳鸿宇机械制造有限公司 | Process for preparing common seamless steel grade steel pipe by adopting 35CrMo as plug material |
| CN111069289A (en) * | 2019-12-09 | 2020-04-28 | 朗瑞(泰州)金属工具有限公司 | Novel steel pipe piercing plug and manufacturing method thereof |
| CN111069289B (en) * | 2019-12-09 | 2024-08-09 | 江苏朗瑞精锻有限公司 | Steel pipe perforating plug and manufacturing method thereof |
| CN112501522A (en) * | 2020-11-06 | 2021-03-16 | 宁波市海曙文昌金属制品有限公司 | High-temperature-resistant piercing plug and preparation method thereof |
| CN112501522B (en) * | 2020-11-06 | 2022-05-31 | 宁波市海曙文昌金属制品有限公司 | High-temperature-resistant piercing plug and preparation method thereof |
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