CN104726781A - Abrasion-resistant seamless steel pipe for conveying and production method of abrasion-resistant seamless steel pipe for conveying - Google Patents
Abrasion-resistant seamless steel pipe for conveying and production method of abrasion-resistant seamless steel pipe for conveying Download PDFInfo
- Publication number
- CN104726781A CN104726781A CN201510163300.6A CN201510163300A CN104726781A CN 104726781 A CN104726781 A CN 104726781A CN 201510163300 A CN201510163300 A CN 201510163300A CN 104726781 A CN104726781 A CN 104726781A
- Authority
- CN
- China
- Prior art keywords
- steel tube
- wear
- conveying
- resisting
- weldless steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides an abrasion-resistant seamless steel pipe for conveying and a production method of the abrasion-resistant seamless steel pipe for conveying. The production method includes the steps: smelting to obtain a pipe billet chemically composed of 0.28-0.36% of C, 0.70-1.30% of Si, 2.80-3.20% of Mn, 0.05-0.15% of V, 0.02-0.04% of Nb, 0.40-0.80% of Cr, 0.14-0.26% of Mo, 0.0005-0.0035% of B, 0-0.015% of As, 0-0.010% of Sn, 0-0.015% of P, 0-0.010% of S and the rest Fe; rolling the pipe billet, wherein the heating temperature before rolling of the pipe billet is 1220-1260 DEG C, and the finish rolling temperature is 860-900 DEG C; subjecting the seamless steel pipe to heat treatment including quenching and tempering, wherein quenching is performed at the heating temperature of 890-950 DEG C by means of external spraying and internal axial flow, and the tempering heating temperature is 380-460 DEG C. By means of large-deformation pressure processing and heat treatment, the seamless steel pipe produced according to the method obtains a complex structure of tempered troostite and dispersively precipitated fine carbides, and is highly resistant to abrasion and low-temperature impact.
Description
Technical field
The invention belongs to metallurgical industry and produce weldless steel tube technical field, specifically, relate to a kind of conveying wear-resisting weldless steel tube and production method thereof,
Background technology
In metallurgy, mine, building materials, power industry, the consumption every year for the abrasion-proof pipe carrying iron alloy, coal, ore, rock, plasma discharge etc. is very huge.
Above-mentioned abrasion-proof pipe is often applied to low temp operation environment, and the surging force that course of conveying is subject to is comparatively large, easily early failure occurs.Therefore, its operating environment requirements abrasion-proof pipe should have good wear resisting property and low-temperature flexibility simultaneously.
Current application at most, consume maximum abrasion-proof pipe and be still based on antifriction cast iron, wearable cast steel pipeline and compound pipeline complex pipeline, but its manufacturing process is complicated, and cost is higher, and combination of strength and toughness is undesirable.Tempering troostite steel has higher combination of strength and toughness, can be applicable to wear-resistant steel pipe field, solves the problem that the low-temperature flexibility of current abrasion-proof pipe existence is on the low side.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of conveying wear-resisting weldless steel tube and production method thereof, and this weldless steel tube has good wear resisting property and low-temperature impact toughness simultaneously.
To achieve these goals, an aspect of of the present present invention provides the production method of a kind of conveying with wear-resisting weldless steel tube, and described production method comprises the following steps:
A, smelting pipe, the chemical composition of described pipe comprises C 0.28 ~ 0.36%, Si 0.70 ~ 1.30% by weight percentage, Mn 2.80 ~ 3.20%, V 0.05 ~ 0.15%, Nb 0.02 ~ 0.04%, Cr 0.40 ~ 0.80%, Mo 0.14 ~ 0.26%, B 0.0005 ~ 0.0035%, As 0 ~ 0.015%, Sn 0 ~ 0.010%, the Fe of P 0 ~ 0.015%, S 0 ~ 0.010% and surplus.
B, billet production is become weldless steel tube, before rolling, the Heating temperature of pipe is 1220 ~ 1260 DEG C, and controlling finishing temperature is 860 ~ 900 DEG C.
C, heat-treated by the weldless steel tube made, comprise Quench and temper, quenching temperature is 890 ~ ~ 950 DEG C, and quenching mode is that outer spray adds interior axial flow, and tempering Heating temperature is 380 ~ 460 DEG C.
Preferably, the chemical composition of described pipe is by weight percentage: C 0.32%, Si 1.00%, Mn 3.0%, V 0.08%, Nb 0.03%, Cr 0.60%, Mo 0.20%, B 0.0025, As 0.012%, Sn 0.008%, the Fe of P 0.01%, S 0.008% and surplus and inevitable impurity.
Preferably, before described rolling, the Heating temperature of pipe is 1240 DEG C.
Preferably, the heat treated quenching temperature of described weldless steel tube is 920 DEG C, and tempering temperature is 420 DEG C.
According to a further aspect of the invention, provide a kind of conveying and use wear-resisting weldless steel tube, the described conveying chemical composition of wear-resisting weldless steel tube is by weight percentage: C 0.28 ~ 0.36%, Si 0.70 ~ 1.30%, Mn 2.80 ~ 3.20%, V 0.05 ~ 0.15%, Nb 0.02 ~ 0.04%, Cr 0.40 ~ 0.80%, Mo 0.14 ~ 0.26%, B 0.0005 ~ 0.0035%, As 0 ~ 0.015%, the Fe of Sn 0 ~ 0.010%, P 0 ~ 0.015%, S 0 ~ 0.010% and surplus.
Preferably, the described conveying chemical composition of wear-resisting weldless steel tube is by weight percentage: C 0.32%, Si 1.00%, Mn 3.0%, V 0.08%, Nb 0.03%, Cr 0.60%, Mo 0.20%, B 0.0025, As 0.012%, Sn 0.008%, the Fe of P 0.01%, S 0.008% and surplus and inevitable impurity.
Wherein, described conveying with wear-resisting weldless steel tube ~ 30 degree of impacts (AKV) are not less than 21J, hardness is not less than 42HRC.
With compared with the antifriction cast iron of press working, wearable cast steel pipeline, adopt the technology of the present invention produce conveying with wear-resisting weldless steel tube after the press working of aximal deformation value, its grain refining, dense structure, can have good wear resisting property and low-temperature impact toughness simultaneously.
The conveying adopting the technology of the present invention to produce is the complex tissue of the fine carbide of tempering troostite and disperse educt with the metallographic structure of wear-resisting weldless steel tube, its low-temperature impact toughness is obviously better than the wear-resisting weldless steel tube of existing lower bainite, and then wear-resisting weldless steel tube is suitable with lower bainite for wear resisting property.
The invention solves a difficult problem for domestic, international compound pipeline complex pipeline double-layer structure, the conveying of production can have good wear resisting property and low-temperature impact toughness with wear-resisting weldless steel tube simultaneously, solves the problem that lower bainite wear-resisting weldless steel tube low-temperature impact toughness is on the low side.
Embodiment
Hereinafter, one conveying wear-resisting weldless steel tube and production method thereof of the present invention will be described in detail in conjunction with exemplary embodiment.
The production method of wear-resisting weldless steel tube of conveying according to an aspect of the present invention comprises step:
A, smelting pipe, the chemical composition of described pipe is C 0.28 ~ 0.36%, Si0.70 ~ 1.30% by weight percentage, Mn 2.80 ~ 3.20%, V 0.05 ~ 0.15%, Nb 0.02 ~ 0.04%, Cr 0.40 ~ 0.80%, Mo 0.14 ~ 0.26%, B 0.0005 ~ 0.0035%, As 0 ~ 0.015%, Sn 0 ~ 0.010%, the Fe of P 0 ~ 0.015%, S 0 ~ 0.010% and surplus;
B, billet production is become weldless steel tube, before rolling, the Heating temperature of pipe is 1220 ~ 1260 DEG C, and controlling finishing temperature is 860 ~ 900 DEG C.
C, heat-treated by the weldless steel tube made, comprise Quench and temper, quenching temperature is 890 ~ 950 DEG C, and quenching mode is that outer spray adds interior axial flow, and tempering Heating temperature is 380 ~ 460 DEG C.
Further, the chemical composition of described pipe is by weight percentage: C 0.32%, Si 1.00%, Mn 3.0%, V 0.08%, Nb 0.03%, Cr 0.60%, Mo 0.20%, B:0.0025, As 0.012%, Sn 0.008%, the Fe of P 0.01%, S 0.008% and surplus and inevitable impurity.
Further, before described rolling, the Heating temperature of pipe is 1240 DEG C.
Further, the heat treated quenching temperature of described weldless steel tube is 920 DEG C, and tempering temperature is 420 DEG C.
The chemical composition of wear-resisting weldless steel tube of conveying is according to a further aspect of the invention by weight percentage: C 0.28 ~ 0.36%, Si 0.70 ~ 1.30%, Mn 2.80 ~ 3.20%, V 0.05 ~ 0.15%, Nb 0.02 ~ 0.04%, Cr 0.40 ~ 0.80%, Mo 0.14 ~ 0.26%, B 0.0005 ~ 0.0035%, As 0 ~ 0.015%, the Fe of Sn 0 ~ 0.010%, P 0 ~ 0.015%, S 0 ~ 0.010% and surplus.
Further, the described conveying chemical composition of wear-resisting weldless steel tube is by weight percentage: C0.32%, Si 1.00%, Mn 3.0%, V 0.08%, Nb 0.03%, Cr 0.60%, Mo 0.20%, B:0.0025, As 0.012%, Sn 0.008%, the Fe of P 0.01%, S 0.008% and surplus and inevitable impurity.
All the other steps of producing above-mentioned steel pipe are identical with the production method of conventional weldless steel tube.
The conveying of the present invention's design belongs to medium carbon low alloy steel with wear-resisting weldless steel tube, and its alloying constituent, based on manganese, silicon, adds again and has the alloying elements such as strong Ying Xiang Chrome, molybdenum, vanadium, niobium, boron to material matrix tissue and hardening capacity.
Wherein, the content of manganese is 2.80 ~ 3.20%, the Fe content in general middle low-carbon abrasion resistant steel, and its Main Function is the hardening capacity and the wear resisting property that improve steel pipe;
Silicon can improve intensity and the hardness of steel, increases steel belt roof bolt stability, and the content range of silicon, on the various impacts of the performance of steel and tissue, is fixed on 0.70 ~ 1.30% by integrated silicon;
Carbon is the vital element affecting steel strength, hardness, toughness and hardening capacity, wear resistance.Carbon amounts is too high, and heat-treated steel pipe hardness is high, and toughness is low, easily forms crackle during thermal treatment; Carbon amounts is too low, and hardening capacity is poor, and hardness is low, and wear resistance is not good.Consider coordinating of wear resistance and toughness, the content range of carbon is fixed on 0.28 ~ O.36%;
The Main Function of chromium is the hardening capacity improving steel, and the matrix of solution strengthening simultaneously, increases its erosion-resisting ability, chromium and playing an important role for improving wear resistance with the multiple compounds that carbon is formed.But chromium also has the tendency increasing steel belt roof bolt fragility.The content range of chromium, on the various impacts of the structure and properties of steel, is fixed on 0.40 ~ 0.80% by composite chromium;
Molybdenum acting as in steel is improved hardening capacity, is prevented temper brittleness, improves the corrosion stability in some medium and prevents spot corrosion tendency etc.When molybdenum is present in steel as single alloying element, increase steel belt roof bolt fragility, but and other cause the element of temper brittleness, as chromium, manganese etc. and when depositing, molybdenum reduces again or suppresses the temper brittleness because other elements cause.Because the content of different molybdenums may produce different impacts to the performance of steel, comprehensive above factor, fixes on 0.14 ~ 0.26% the content of molybdenum.
Vanadium belongs to carbide.Because vanadium is exist with the carbide form of very disperse in steel, make to need to be heated to very high temperature in these carbide dissolution to austenite.Therefore, the carbide of vanadium plays crystal grain thinning and the effect increasing wear resistance in steel.Comprehensive above factor, fixes on 0.05 ~ 0.15% by the content range of vanadium.
Below the effect of niobium in steel embodies in two: a crystal grain thinning; Two is play precipitation strength effect to improve intensity; Three is, after adding niobium and vanadium in this steel, can make full use of the interaction between niobium and vanadium simultaneously, plays the effect of niobium vanadium complex intensifying.Comprehensive above factor, fixes on 0.02 ~ 0.04% the content of niobium.
The effect that boron is given prominence in steel is the hardening capacity that micro-boron just can increase steel exponentially.Trace B has the tendency making Austenite Grain Growth, when O.007% the content of boron be greater than, will cause the hot-short phenomenon of steel.Therefore the content of boron is determined 0.0005 ~ 0.0035%.
Due to sulphur, phosphorus and arsenic, the easy intercrystalline precipitation of selenium element, weaken crystal boundary, cause intercrystalline brittleness, therefore, for improving the impelling strength of steel pipe, the present invention has carried out strict restriction to the content of the sulphur in material, phosphorus and arsenic, selenium.
For obtaining excellent wear resistance, add the manganese of 2.80 ~ 3.20% in the conveying of the present invention's design material with wear-resisting weldless steel tube, its content is apparently higher than low-carbon abrasion resistant steel in common.Manganese due to high-content can cause steel pipe coarse grains, segregation serious, for this reason, adds again crystal grain thinning and vanadium, the niobium element of organizing remarkable effect in material simultaneously, with offset manganese On Impact Toughness the negative effect that rises.
The conveying of the present invention's design is proper by the content proportioning of the carbon in wear-resisting weldless steel tube material and various alloying element, there is excellent hardening capacity, steel tube surface and heart portion can be made to be easy to through hardening, thus reduce the technological difficulty of quenching heat treatment, make the whole cross section of steel pipe obtain the mechanical property of uniformity.
When carrying out steel pipe rolling, strictly will control Heating temperature and the finishing temperature of pipe, if the Heating temperature of pipe is greater than 1260 DEG C, although be conducive to the production efficiency improving tube rolling, finishing temperature is high, coarse grains, and product performance are difficult to ensure; If the Heating temperature of pipe is lower than 1220 DEG C, then the consumption of tube rolling instrument is large, and the production efficiency of tube rolling is low, and finishing temperature is low, and product performance are also difficult to ensure.
The conveying of the present invention's design is quenching+average tempering by the heat treating regime of wear-resisting weldless steel tube, and its quenching temperature is 890 ~ 950 DEG C.If quenching temperature is too high, crystal grain will be tending towards thick, and the low-temperature impact toughness of steel pipe declines; If quenching temperature is too low, dissolve in austenitic alloying element quantity and reduce, the intensity of steel pipe and hardness decline.
At present, all take the heat treating regime of " quenching+low-temperaturetempering " after a lot of wear resisting steel roll forming, obtain tempered martensite, this tissue maintains the feature of martensite high rigidity and high-wearing feature, but impelling strength is extremely low.The shaping rear heat treating regime generally taking " air cooling+low-temperaturetempering " or Direct Air-Cooled of the wear-resisting roll seamless steel tube of lower bainite, its hardness and wear resistance is lower than tempered martensite wear resisting steel, though impact toughness at room temperature is apparently higher than tempered martensite wear resisting steel, its low-temperature impact toughness is still in a lower level.And the heat treating regime of quenching+average tempering that the present invention adopts, steel pipe is made to obtain the complex tissue of the fine carbide of tempering troostite and disperse educt, its low-temperature impact toughness is significantly better than the wear-resisting weldless steel tube of lower bainite, and then wear-resisting weldless steel tube is suitable with lower bainite for wear resisting property.
Below in conjunction with concrete example, exemplary illustration is carried out to the present invention.
1, pipe is smelted
By smelting and continuous casting, obtain the pipe of example 1 to 3.The chemical composition of the pipe of example 1 to 3 is as shown in table 1, and the surplus in pipe except following is Fe, and also may comprise inevitable impurity.
The chemical composition (wt%) of the pipe of table 1, example 1 to 3
| Example | C | Si | Mn | V | Nb | P | S | Cr | B | Mo | As | Sn |
| 1 | 0.325 | 0.95 | 2.95 | 0.07 | 0.030 | 0.01 | 0.007 | 0.65 | 0.0028 | 0.20 | 0.01 | 0.006 |
| 2 | 0.315 | 1.10 | 2.88 | 0.08 | 0.029 | 0.012 | 0.009 | 0.58 | 0.003 | 0.25 | 0.01 | 0.006 |
| 3 | 0.330 | 1.05 | 2.98 | 0.08 | 0.030 | 0.008 | 0.008 | 0.72 | 0.0029 | 0.19 | 0.01 | 0.006 |
In smelting, external refining, casting cycle, operate in strict accordance with specification, make the chemical composition of steel even, steel is pure, to guarantee the performance of steel pipe.
2, wroughtsteel pipe
The various processing parameters such as the Heating temperature of pipe, finishing temperature are controlled, to meet steel tube performance index in the operation of rolling.Main technologic parameters is: ring furnace Heating temperature is: 1220 ~ 1260 DEG C, and finishing temperature is 880 DEG C ± 20 DEG C.
3, Steel Pipe Heat process
Heat-treated by the weldless steel tube made, comprise Quench and temper, controlling quenching temperature is 890 ~ 950 DEG C, and the quenching mode of employing is that outer spray adds interior axial flow, and controlling tempering Heating temperature is 380 ~ 460 DEG C.
4, steel tube performance detects
The conveying of example 1 ~ 3 by the performance test results of wear-resisting weldless steel tube in table 2 ~ table 3.
The non-metallic inclusion of the weldless steel tube of table 2, example 1 ~ 3 and grain fineness number situation
The mechanical property of the weldless steel tube of table 3, example 1 ~ 3
As can be seen from the detected result of table 2 and table 3, the conveying of the present invention's design is pure with the steel of wear-resisting weldless steel tube, and grain fineness number is tiny, and ~ 30 DEG C of impacts (AKV) are not less than 21J, and hardness is not less than 42HRC.There is good impact property and wear resisting property.
The conveying of the present invention's design has good wear resisting property and low-temperature impact toughness with wear-resisting weldless steel tube simultaneously, this is for the work-ing life of improving abrasion-proof pipe, reduce maintenance of equipment work amount, improve equipment operating efficiency, prevent the wear-resisting weldless steel tube early failure of conveying, increase economic efficiency, have very important significance.
Although below in conjunction with the embodiments to invention has been detailed description; but should be understood that as those of ordinary skill in the art; when not departing from the spirit and scope of claim, can various amendment be carried out, also be within protection scope of the present invention.
Claims (7)
1. a conveying production method for wear-resisting weldless steel tube, is characterized in that described production method comprises the following steps:
A, smelting pipe, the chemical composition of described pipe comprises C:0.28 ~ 0.36% by weight percentage, Si:0.70 ~ 1.30%, Mn:2.80 ~ 3.20%, V:0.05 ~ 0.15%, Nb:0.02 ~ 0.04%, Cr:0.40 ~ 0.80%, Mo:0.14 ~ 0.26%, B:0.0005 ~ 0.0035%, As:0 ~ 0.015%, Sn:0 ~ 0.010%, P:0 ~ 0.015%, the Fe of S:0 ~ 0.010% and surplus;
B, billet production is become weldless steel tube, before rolling, the Heating temperature of pipe is 1220 ~ 1260 DEG C, and controlling finishing temperature is 860 ~ 900 DEG C;
C, heat-treated by the weldless steel tube made, comprise Quench and temper, quenching temperature is 890 ~ ~ 950 DEG C, and quenching mode is that outer spray adds interior axial flow, and tempering Heating temperature is 380 ~ 460 DEG C.
2. the conveying according to claim 1 production method of wear-resisting weldless steel tube, is characterized in that the chemical composition of described pipe comprises C:0.32% by weight percentage, Si:1.00%, Mn:3.0%, V:0.08%, Nb:0.03%, Cr:0.60%, Mo:0.20%, B:0.0025, As:0.012%, Sn:0.008%, the Fe of P:0.01%, S:0.008% and surplus and inevitable impurity.
3. the conveying according to claim 1 production method of wear-resisting weldless steel tube, is characterized in that: the Heating temperature before described billet production is 1240 DEG C.
4. the conveying according to claim 1 production method of wear-resisting weldless steel tube, is characterized in that: the quenching temperature of weldless steel tube described in step c is 920 DEG C, and tempering temperature is 420 DEG C.
5. a wear-resisting weldless steel tube is used in conveying, it is characterized in that the described conveying chemical composition of wear-resisting weldless steel tube comprises C:0.28 ~ 0.36% by weight percentage, Si:0.70 ~ 1.30%, Mn:2.80 ~ 3.20%, V:0.05 ~ 0.15%, Nb:0.02 ~ 0.04%, Cr:0.40 ~ 0.80%, Mo:0.14 ~ 0.26%, B:0.0005 ~ 0.0035%, As:0 ~ 0.015%, Sn:0 ~ 0.010%, P:0 ~ 0.015%, the Fe of S:0 ~ 0.010% and surplus.
6. the wear-resisting weldless steel tube of conveying according to claim 5, is characterized in that the described conveying chemical composition of wear-resisting weldless steel tube comprises C:0.32% by weight percentage, Si:1.00%, Mn:3.0%, V:0.08%, Nb:0.03%, Cr:0.60%, Mo:0.20%, B:0.0025, As:0.012%, Sn:0.008%, the Fe of P:0.01%, S:0.008% and surplus and inevitable impurity.
7. the wear-resisting weldless steel tube of conveying according to claim 5, is characterized in that: the wear-resisting weldless steel tube of described conveying ~ 30 DEG C of impacts (AKV) are not less than 21J, and hardness is not less than 42HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163300.6A CN104726781B (en) | 2015-04-08 | 2015-04-08 | One kind conveying wear-resisting seamless steel pipe and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510163300.6A CN104726781B (en) | 2015-04-08 | 2015-04-08 | One kind conveying wear-resisting seamless steel pipe and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104726781A true CN104726781A (en) | 2015-06-24 |
| CN104726781B CN104726781B (en) | 2017-06-13 |
Family
ID=53451186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510163300.6A Active CN104726781B (en) | 2015-04-08 | 2015-04-08 | One kind conveying wear-resisting seamless steel pipe and its production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104726781B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483528A (en) * | 2016-02-05 | 2016-04-13 | 攀钢集团成都钢钒有限公司 | H2S corrosion-resistant 80-ksi casing steel for shale gas and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938865A (en) * | 1995-05-15 | 1999-08-17 | Sumitomo Metal Industries, Ltc. | Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance |
| CN1477225A (en) * | 2003-08-01 | 2004-02-25 | 清华大学 | Medium carbon and medium-high carbon manganese system self-hardening bainite steel |
| CN102534432A (en) * | 2012-01-10 | 2012-07-04 | 清华大学 | Method for manufacturing and tempering bainite wear-resistant steel and steel pipe |
| CN102747272A (en) * | 2012-08-01 | 2012-10-24 | 攀枝花贝氏体耐磨管道有限公司 | B-P-T steel tube and preparation method thereof |
| CN102776445A (en) * | 2012-07-27 | 2012-11-14 | 攀枝花贝氏体耐磨管道有限公司 | Lower bainite wear-resisting steel tube for slurry transport and production method of steel tube |
-
2015
- 2015-04-08 CN CN201510163300.6A patent/CN104726781B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938865A (en) * | 1995-05-15 | 1999-08-17 | Sumitomo Metal Industries, Ltc. | Process for producing high-strength seamless steel pipe having excellent sulfide stress cracking resistance |
| CN1477225A (en) * | 2003-08-01 | 2004-02-25 | 清华大学 | Medium carbon and medium-high carbon manganese system self-hardening bainite steel |
| CN102534432A (en) * | 2012-01-10 | 2012-07-04 | 清华大学 | Method for manufacturing and tempering bainite wear-resistant steel and steel pipe |
| CN102776445A (en) * | 2012-07-27 | 2012-11-14 | 攀枝花贝氏体耐磨管道有限公司 | Lower bainite wear-resisting steel tube for slurry transport and production method of steel tube |
| CN102747272A (en) * | 2012-08-01 | 2012-10-24 | 攀枝花贝氏体耐磨管道有限公司 | B-P-T steel tube and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483528A (en) * | 2016-02-05 | 2016-04-13 | 攀钢集团成都钢钒有限公司 | H2S corrosion-resistant 80-ksi casing steel for shale gas and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104726781B (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104264072B (en) | A kind of 600HB grade wear-resisting steel plate and preparation method thereof | |
| CN105483539B (en) | A kind of enhanced austenite abrasion-proof steel plate of ultra-hard particles and its manufacture method | |
| CN102021492B (en) | Low-carbon low-alloy wear-resistant steel and production method thereof | |
| CN108118260A (en) | A kind of stainless Bearing gear steel of superpower superhard high temperature and preparation method | |
| CN104694829A (en) | High-toughness wear-resisting medium manganese steel hot rolled plate and manufacturing method thereof | |
| CN108396240A (en) | Heat-resistant wear-resistant steel plate and production method thereof | |
| CN108588580A (en) | A kind of high-purity bainitic steel, wheel and manufacturing method comprising it | |
| CN105239014A (en) | Low-cost high-carbon medium-magnesium abrasion resisting steel and manufacturing method of hot rolled plate of low-cost high-carbon medium-magnesium abrasion resisting steel | |
| CN106521338A (en) | High-strength high-hardness steel plate and flexibility production method | |
| CN103498103B (en) | A kind of high-hardenability major diameter 65MnCr abrading-ball and preparation method thereof | |
| CN105239015A (en) | High-carbon medium-magnesium abrasion resisting steel and hot rolled plate manufacturing method | |
| CN100567549C (en) | A kind of carbides-free bainite wear resistant steel plate and production technique thereof | |
| CN108165890A (en) | A kind of preparation method of low-cost high-strength nanometer bainite abrasion-proof steel ball | |
| CN106756489A (en) | 450 grades of anti-crack high-strength abrasion-proof steels of Brinell hardness and its manufacture method | |
| CN105088081A (en) | Bainite and martensite spring steel for stabilizer bar and manufacturing process for stabilizer bar | |
| CN106893942B (en) | A kind of high intensity bainite antiwear steel plate and its production method | |
| CN103233171B (en) | A kind of NM400 level cracking resistance line high-strength abrasion-proof steel and production method | |
| CN109504847B (en) | Low-cost plastic die steel and preparation method thereof | |
| CN107675090A (en) | A kind of Brinell hardness 650HBW ranks high-wearing feature steel plate and preparation method thereof | |
| CN113564496B (en) | Long-life railway bearing steel and preparation method thereof | |
| CN109695003A (en) | High-wear-resistance steel ball with excellent toughness and manufacturing method thereof | |
| CN109913749A (en) | Economical wear-resistant seamless steel tube and manufacturing method thereof | |
| CN103834871B (en) | 500MPa-level corrosion-resistant Cr-contained reinforcing steel bar and rolling process thereof | |
| CN111549277B (en) | Martensite wear-resistant steel plate resistant to atmospheric corrosion and manufacturing method thereof | |
| CN107574380A (en) | The big specification forging abrading-ball steel of high rigidity fine grain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |