CN107855366A - A kind of steel pipe perforating heading and preparation method thereof - Google Patents
A kind of steel pipe perforating heading and preparation method thereof Download PDFInfo
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- CN107855366A CN107855366A CN201711078826.XA CN201711078826A CN107855366A CN 107855366 A CN107855366 A CN 107855366A CN 201711078826 A CN201711078826 A CN 201711078826A CN 107855366 A CN107855366 A CN 107855366A
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- steel pipe
- pipe perforating
- perforating heading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of steel pipe perforating heading and preparation method thereof, and it solves in the prior art the problems such as steel pipe perforating heading wearability is inadequate, and the life-span is not long.The present invention steel pipe perforating heading component and mass percent be：Carbon (C)：0.28% 0.40%, chromium (Cr)：11.0% 12.2%, manganese (Mn)：1.7% 2.3%, molybdenum (Mo)：0.2% 0.6%, silicon (Si)：0.25% 1.10%, nickel (Ni)：0.8% 1.1%, vanadium (V)：0.3% 0.5%, rhenium (Re)：0.25% 0.35%, surplus is iron (Fe) and inevitable impurity.Present invention also offers the preparation method for preparing above-mentioned steel pipe perforating heading, its method comprises the following steps：Dispensing, forging, annealing heat-treats, surface oxidation treatment.The steel pipe perforating heading wearability of the present invention is good, service life length.
Description
The present invention relates to a kind of perforating head, and in particular to a kind of steel pipe perforating heading and preparation method thereof, belongs to metal
Material Field.
Perforating head is the critical process part in steel pipe's production, the quality of its quality and the direct shadow of length of service life
Ring the efficiency and tube quality of steel pipe's production.And perforating head is in perforation procedure, because directly being contacted with high temperature tube blank inner wall,
Perforating head and pipe reversely rotate, and top stress complexity is, it is necessary to bear huge axial direction, radial direction, tangential stress and surface
Frictional force, and water cooling is needed during poling or after poling, need to HTHP, rapid heat cycle condition of work under be subjected to cycle
Mechanical fatigue and heat fatigue.Therefore, perforating head is easily destroyed in use, easily occur collapsing nose, steel bonding, opens
The Problem of Failure such as split, the life-span is not long and develop the perforating head of high quality high life has turned into important class in steel pipe's production
Topic.
Chinese patent application file (publication number：CN101603154A a kind of green wood of hot perforation top head of steel pipe) is disclosed
Material, its chemical constituent and percentage by weight are C：0.2-0.3, Si：0.20-1.20, Mn：0.40-0.60, Cr：0.50-0.80,
Ni：0.90-1.20, Mo：0.90-1.20, W：1.80-2.20 Al：1.0-2.0, Ce：0.02-0.05, surplus is for iron and not
Evitable micro- impurity.The new material improves the performances such as the hardness, intensity, toughness of perforating head new material to a certain extent,
But its wearability, temperature tolerance without be improved significantly so that the service life of the hot perforation top head is not grown.
The purpose of the present invention is to be directed to the deficiencies in the prior art, there is provided a kind of wearability is good, and temperature tolerance is good, makes
With the steel pipe perforating heading of long lifespan.
The purpose of the present invention can be realized by following technical proposal：A kind of steel pipe perforating heading, its component and matter
Measuring percentage is：Carbon (C)：0.28%-0.40%, chromium (Cr)：11.0%-12.2%, manganese (Mn)：1.7%-2.3%, molybdenum
(Mo)：0.2%-0.6%, silicon (Si)：0.25%-1.10%, nickel (Ni)：0.8%-1.1%, vanadium (V)：0.3%-0.5%,
Rhenium (Re)：0.25%-0.35%, surplus are iron (Fe) and inevitable impurity.
Compared to prior art, the present invention devises a kind of new steel pipe perforating heading material, and the steel pipe perforating heading exists
On the basis of low nickel, its is produced synergy with when adding new element by optimize each composition, obtain wearability
It is good, high temperature resistant, the steel pipe perforating heading of low temperature resistant service life length.
Carbon content is 0.28%-0.40% in steel pipe perforating heading of the present invention.Carbon and iron, chromium in steel pipe perforating heading
Stable (Cr, Fe) 7C3 type carbide is formed, carbide can be also formed with Fe, Mn, and perforating steel pipe top is improved by quenching
The wearability and hardness of head, while in turn ensure that enough plasticity, toughness and its temperature tolerance.If carbon content is too low, carbonization
Thing tails off, abrasion resistant effect unobvious, and when carbon content is too high, the mechanical performance especially toughness of steel pipe perforating heading is notable
It is deteriorated, is unfavorable for perforating head and is used under severe operating mode.The mass percent of carbon is controlled in 0.28%-
0.40%, carbon can be made to produce synergy with other elements, there is the steel pipe perforating heading in the present invention preferably comprehensive
Performance.
Compared with prior art, the chromium content in steel pipe perforating heading of the present invention greatly increases, and is 11.0%-12.2%.
The radius of chromium atom is 2.810-10m, and the radius of iron atom is 2.710-10m, and both are very close, iron and chromium
Affinity is stronger than other elements, and (Fe, Cr) 3C type carbide is easily combined into carbon.And in as-cast structure carbide amount with
The increase of chromium content and increase, continuous net-shaped carbide (Fe, Cr) 3C is often formed on crystal boundary.In addition, on perforating steel pipe top
The chromium of high content is added in head can not only change carbide dispersion distributional pattern in top, obtain based on Cr23C6
Granular carbide, make its Dispersed precipitate on Ovshinsky matrix, moreover it is possible to improve the wearability, toughness, intensity of steel pipe perforating heading
With high temperature resistance, corrosion resistance.Therefore chromium content is brought up to 11.0%-12.2% by steel pipe perforating heading of the present invention, can make chromium
Synergy is produced with other elements, effectively improves steel pipe perforating heading anti-wear performance more than 2 times.
Manganese is intensified element main in steel pipe perforating heading, and deoxidation degasification is mainly played in steel pipe perforating heading and is carried
High-hardenability etc. acts on.But when manganese content is higher than 9%, element manganese is not obvious to the mechanical performance of steel pipe perforating heading
Influence.Manganese can generate (FeMn) 3C type carbide in steel pipe perforating heading with iron, austenite decomposition speed be reduced, so as to big
The big quenching degree for improving steel pipe perforating heading.If manganese content is too high, manganese, which is dissolved in austenite, can reduce martensite transformation temperature and enter
And increase Ovshinsky scale of construction remaining in quenching structure so as to influence the wearability of steel pipe perforating heading.Ensureing austenite group
On the premise of knitting, the reduction of manganese content can cause stabilization of austenite to be declined slightly, but the wearability of steel pipe perforating heading exists
It can be significantly improved in the presence of high impact, workhardness is significantly enhanced.Manganese element is added in steel pipe perforating heading to be refined
Material structure, recrystallization temperature is improved, it is resistance to when steel pipe perforating heading produces high temperature because rubbing in use so as to strengthen
It is hot.Therefore the present invention controls manganese content in 1.7%-2.3%, both ensure that austenite structure, adds austenite again
Hardness and intensity, wearability, the temperature tolerance of steel pipe perforating heading can be also greatly improved, to make up the deficiency of low-carbon.
The molybdenum element of crystal grain thinning is added in steel pipe perforating heading, three aspects can be played：First, molybdenum can be effectively
Suppress cementite aggregation, cause the carbide of molybdenum with superfine small size Dispersed precipitate in austenite, at the same can dispersion-strengtherning make
With reinforcing austenite structure, the intensity and hardness for making steel pipe perforating heading increases, strain-hardening performance enhancement, so as to improve
Abrasion-resistance.2nd, molybdenum is distributed in the analysis that can effectively suppress grain boundary carbide in steel pipe perforating heading cooling procedure in carbide
Go out, in steel pipe perforating heading plus chromium can greatly improve grain boundary carbide precipitation tendency, the compound addition of molybdenum and two kinds of elements of chromium
The beneficial effect of two kinds of alloying elements can be made while brought into play.3rd, after adding molybdenum in steel pipe perforating heading, acicular carbide
Shorten, quantity is significantly reduced, and Precipitation Temperature is improved, and the brittle temperature of steel pipe perforating heading can be made to bring up to 350 DEG C or so.Through
Experiment understands that when adding 0.2%-0.6% molybdenums the wearability of piercing plug for seamless steel tubes can improve 20-30%, intensity, modeling
Property and impact flexibility also improve 20%-30%.Coordinate to add in steel pipe perforating heading with appropriate manganese and more can effectively play
Molybdenum and effect of the manganese in steel pipe perforating heading, improve the bainite quenching degree of steel pipe perforating heading, obtain Non-carbonized during air cooling
Bainite tissue, so as to improve the wearability of steel pipe perforating heading, hardness.
Oxide layer and the caking property of matrix can be improved by adding appropriate silicon, improve the high-temperature resistant tempered performance of steel pipe perforating heading,
This is essential to improving top service life.But silicone content is too high to decline steel pipe perforating heading elevated temperature strength,
So the present invention controls the content of silicon in steel pipe perforating heading in 0.25%-1.10%, it is used cooperatively with manganese element content,
The toughness of steel pipe perforating heading is effectively improved, improves the intensity and hardness of steel pipe perforating heading.
The coefficient of expansion of nickel is very small, hardly expands with heat and contract with cold, and nickel is added in steel pipe perforating heading and advantageously forms adhesiveness
Good oxide layer, improve the elevated temperature strength of steel pipe perforating heading.But nickel it is too high when, the thermal conductivity of steel pipe perforating heading declines,
Oxidability is deteriorated.
The content that vanadium is added in steel pipe perforating heading of the present invention is 0.4%-0.6%.Vanadium can crystal grain thinning, formed carbonization
Thing, so as to strengthen the elasticity of steel pipe perforating heading, elevated temperature strength, wear-resistant and anti-cracking property.The presence of vanadium can both reduce steel pipe
Perforating head deformation when in use and cracking, the performance such as and can high temperature resistant and cold-resistant.But when content of vanadium reaches it is a certain amount of when,
Its effect increases unobvious, and expensive, and too high levels can improve cost.
Rhenium element of the invention through studying to add a small amount of crystal grain thinning in steel pipe perforating heading, it is possible to increase steel pipe is worn
Hardness, plasticity, the combination property such as wearability of hole top, make steel pipe perforating heading be resistant to frictional force in long-term use.Rhenium
The content of the impurity such as sulphur in impurity, phosphorus can be substantially reduced by adding, and improve the anti-cold fatigue life of steel pipe perforating heading, ensure steel
The quality of pipe perforating head.
Rationally match somebody with somebody it is crucial that wanting used although above-mentioned element has certain contribution to heading material, during use
When combine, so can just give full play to the superiority of each element.
In the impurity, the mass percent of sulphur (S) element is less than or equal to 0.026%, the quality percentage of phosphorus (P) element
Than less than or equal to 0.026%.
In steel pipe perforating heading of the present invention by sulfur content control within 0.026% reducing steel pipe perforating heading
Red brittleness, improve the ductility and toughness of steel pipe perforating heading.
P and ses are similar, and the wearability and mechanical performance to steel pipe perforating heading have particularly detrimental influence.This hair
The bright content by phosphorus is controlled within 0.025%, to improve the plasticity of steel pipe perforating heading, toughness, wearability, often
0.02% P averagely reduces impact flexibility 1.98J/cm2, but when phosphorus drops to 0.02% -0.04% from 0.07%-1.0%, steel
Plasticity, toughness, the wearability of pipe perforating head can improve 40%-50 %, and the crackle of steel pipe perforating heading casting also can be significantly
Reduce, can also avoid intercrystalline precipitation eutectic phosphide.
The present invention substantially increases chromium content, while adds vanadium and rhenium, compared with top of the prior art, improves
Elevated temperature strength, hardness, plasticity, wearability and the thermal fatigue property of top, make the life-span of steel pipe perforating heading of the present invention longer.
Further, the component of the steel pipe perforating heading and mass percent are：Carbon (C)：0.28%, chromium
(Cr)：11.0%, manganese (Mn)：1.7%, molybdenum (Mo)：0.2%, silicon (Si)：0.25%, nickel (Ni)：0.8%, vanadium (V)：
0.3%, rhenium (Re)：0.25%, surplus is iron (Fe) and inevitable impurity.
Further, the component of the steel pipe perforating heading and mass percent are：Carbon (C)：0.33%, chromium
(Cr)：11.5%, manganese (Mn)：2.0%, molybdenum (Mo)：0.4%, silicon (Si)：0.8%, nickel (Ni)：1.0%, vanadium (V)：0.4%,
Rhenium (Re)：0.30%, surplus is iron (Fe) and inevitable impurity.
Further, the component of the steel pipe perforating heading and mass percent are：Carbon (C)：0.40%, chromium (Cr)：
12.2%, manganese (Mn)：2.3%, molybdenum (Mo)：0.6%, silicon (Si)：1.1%, nickel (Ni)：1.1%, vanadium (V)：0.5%, rhenium
(Re)：0.35%, surplus is iron (Fe) and inevitable impurity.
The present invention also provides a kind of method for preparing above-mentioned steel pipe perforating heading, and described preparation method includes following step
Suddenly：
S1, raw material are prepared：By the component and mass percent preparation raw material of steel pipe perforating heading.
S2, forging：The raw material prepared is smelted, poured into a mould, is processed into required shape.
S3, annealing heat-treats：Steel pipe perforating heading after processing is heated to 880 DEG C of -950 DEG C of annealing, is incubated after annealing
2-4 hours, finished product at the beginning of air cooling of then being come out of the stove at 350 DEG C -370 DEG C obtains steel pipe perforating heading.
S4, surface oxidation treatment：Micro Process processing first is carried out to the fitting surface of finished product at the beginning of steel pipe perforating heading, reheated
To 950 DEG C of -1100 DEG C of high-temperature oxydations, 4-5 hours are incubated under conditions of being then 520 DEG C -610 DEG C in temperature, that is, obtain finished product
Steel pipe perforating heading.
In the preparation method of above-mentioned steel pipe perforating heading, preferably, in step S3, the steel pipe after the processing
The annealing temperature of perforating head is 930 DEG C, and soaking time is 3 hours, and air cooling temperature of coming out of the stove is 360 DEG C.
In the preparation method of above-mentioned steel pipe perforating heading, preferably, in step S5, the steel pipe perforating heading
The high-temperature oxydation temperature of first finished product is 980 DEG C, and holding temperature is 580 DEG C, and soaking time is 4 hours.
Air cooling of being come out of the stove in annealing heat-treats at 350 DEG C -370 DEG C can eliminate stress, adjust materials microstructure structure, improve
The toughness of material.High-temperature oxydation is heated to 950 DEG C -1100 DEG C and is incubated the purpose that can improve comprehensive mechanical performance again.Carry out surface
Oxidation processes, surface smoothness and corrosion resistance can be increased, form superhard carburization zone, make steel pipe perforating heading wearability
It can be improved with heat resistance, extend the service life of steel pipe perforating heading.
Compared with prior art, the raw material of the invention by configuring specific components and mass percent, compatibility is reasonable, and
The steel pipe perforating heading of the present invention is obtained by special PROCESS FOR TREATMENT.The good mechanical property of the steel pipe perforating heading, with
Higher abrasion resistance with it is durothermic simultaneously, there is higher hardness, toughness, tensile strength again, service life is longer.
Claims (8)
1. a kind of steel pipe perforating heading, it is characterised in that the component and mass percent of the steel pipe perforating heading be：
Carbon (C)：0.28%-0.40%, chromium (Cr)：11.0%-12.2%, manganese (Mn)：1.7%-2.3%, molybdenum (Mo)：0.2%-
0.6%, silicon (Si)：0.25%-1.10%, nickel (Ni)：0.8%-1.1%, vanadium (V)：0.3%-0.5%, rhenium (Re)：
0.25%-0.35%, surplus are iron (Fe) and inevitable impurity.
2. steel pipe perforating heading according to claim 1, it is characterised in that in the impurity, the quality of sulphur (S) element
Percentage is less than or equal to 0.026%, and the mass percent of phosphorus (P) element is less than or equal to 0.026%.
3. steel pipe perforating heading according to claim 2, it is characterised in that the component of the steel pipe perforating heading
And mass percent is：Carbon (C)：0.28%, chromium (Cr)：11.0%, manganese (Mn)：1.7%, molybdenum (Mo)：0.2%, silicon (Si)：
0.25%, nickel (Ni)：0.8%, vanadium (V)：0.3%, rhenium (Re)：0.25%, surplus be iron (Fe) and inevitably it is miscellaneous
Matter.
4. steel pipe perforating heading according to claim 2, it is characterised in that the component of the steel pipe perforating heading
And mass percent is：Carbon (C)：0.33%, chromium (Cr)：11.5%, manganese (Mn)：2.0%, molybdenum (Mo)：0.4%, silicon (Si)：
0.8%, nickel (Ni)：1.0%, vanadium (V)：0.4%, rhenium (Re)：0.30%, surplus be iron (Fe) and inevitably it is miscellaneous
Matter.
5. steel pipe perforating heading according to claim 2, it is characterised in that the component of the steel pipe perforating heading
And mass percent is：Carbon (C)：0.40%, chromium (Cr)：12.2%, manganese (Mn)：2.3%, molybdenum (Mo)：0.6%, silicon (Si)：
1.1%, nickel (Ni)：1.1%, vanadium (V)：0.5%, rhenium (Re)：0.35%, surplus be iron (Fe) and inevitably it is miscellaneous
Matter.
A kind of 6. preparation method of steel pipe perforating heading as claimed in claim 1, it is characterised in that described preparation method bag
Include following steps：
S1, raw material are prepared：By the component and mass percent preparation raw material of steel pipe perforating heading；
S2, forging：The raw material prepared is smelted, poured into a mould, is processed into required shape；
S3, annealing heat-treats：Steel pipe perforating heading after processing is heated to 880 DEG C of -950 DEG C of annealing, 2-4 is incubated after annealing
Hour, finished product at the beginning of air cooling of then being come out of the stove at 350 DEG C -370 DEG C obtains steel pipe perforating heading；
S4, surface oxidation treatment：Micro Process processing first is carried out to the fitting surface of finished product at the beginning of steel pipe perforating heading, is again heated to 950
DEG C -1100 DEG C of high-temperature oxydations, 4-5 hours are incubated under conditions of being then 520 DEG C -610 DEG C in temperature, that is, obtain fished pipe
Perforating head.
7. the preparation method of steel pipe perforating heading according to claim 6, it is characterised in that in step s3, the processing
The annealing temperature of steel pipe perforating heading afterwards is 930 DEG C, and soaking time is 3 hours, and air cooling temperature of coming out of the stove is 360 DEG C.
8. the preparation method of steel pipe perforating heading according to claim 6, it is characterised in that in step s 4, the steel pipe
The high-temperature oxydation temperature of the first finished product of perforating head is 980 DEG C, and holding temperature is 580 DEG C, and soaking time is 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078826.XA CN107855366A (en) | 2017-11-06 | 2017-11-06 | A kind of steel pipe perforating heading and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711078826.XA CN107855366A (en) | 2017-11-06 | 2017-11-06 | A kind of steel pipe perforating heading and preparation method thereof |
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| CN107855366A true CN107855366A (en) | 2018-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112077306A (en) * | 2020-08-20 | 2020-12-15 | 华中科技大学 | Method for strengthening seamless steel tube piercing plug through selective laser cladding and obtained plug |
| 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 |
-
2017
- 2017-11-06 CN CN201711078826.XA patent/CN107855366A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112077306A (en) * | 2020-08-20 | 2020-12-15 | 华中科技大学 | Method for strengthening seamless steel tube piercing plug through selective laser cladding and obtained plug |
| CN112077306B (en) * | 2020-08-20 | 2021-11-19 | 华中科技大学 | Method for strengthening seamless steel tube piercing plug through selective laser cladding and obtained plug |
| 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 |
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