CN104264067A - Seamless steel pipe for hydraulic steel cylinder and preparation technology thereof - Google Patents

Seamless steel pipe for hydraulic steel cylinder and preparation technology thereof Download PDF

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Publication number
CN104264067A
CN104264067A CN201410397222.1A CN201410397222A CN104264067A CN 104264067 A CN104264067 A CN 104264067A CN 201410397222 A CN201410397222 A CN 201410397222A CN 104264067 A CN104264067 A CN 104264067A
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China
Prior art keywords
parts
hydraulic pressure
pipe
steel tube
steel cylinder
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Pending
Application number
CN201410397222.1A
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Chinese (zh)
Inventor
吴建宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI GETE PRECISION COLD DRAWN TUBES Co Ltd
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WUXI GETE PRECISION COLD DRAWN TUBES Co Ltd
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Priority to CN201410397222.1A priority Critical patent/CN104264067A/en
Publication of CN104264067A publication Critical patent/CN104264067A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The invention discloses a seamless steel pipe for a hydraulic steel cylinder. A steel ingot used by the seamless steel pipe comprises, by mass, 15-30 parts of C, 2-8 parts of Si, 6-15 parts of Mn, 3-10 parts of Cr, 20-40 parts of Al, 1-5 parts of Ti, 1-10 parts of V, 1-8 parts of Zr, 10-20 parts of Ca, 0.8-5.5 parts of B, 0.1-0.5 parts of H, 0.02-0.2 parts of Pm, 0.05-0.5 parts of Sm, 300-1200 parts of Fe and 0.1-0.3 parts of impurities. A preparation method of the seamless steel pipe comprises the following steps of a, carrying out steel ingot smelting, refining, vacuum degassing and circular pipe blank continuous-casting to obtain a pipe blank material, b, putting the pipe blank material into a lubricating fluid and carrying out dip-coating pre-treatment, c, soaking the pipe blank material subjected to the pre-treatment and carrying out hot-rolling perforation, d, carrying out water cooling on the pipe blank material subjected to hot-rolling perforation, and e, orderly carrying out quenching and tempering on the seamless steel pipe subjected to water cooling. The seamless steel pipe for the hydraulic steel cylinder has improved performances, can be manufactured by simple processes and has a long service life.

Description

Hydraulic pressure steel cylinder weldless steel tube and preparation technology thereof
Technical field
The present invention relates to weldless steel tube field, particularly relate to a kind of hydraulic pressure steel cylinder weldless steel tube and preparation technology thereof.
Background technology
High strength, high tenacity weldless steel tube, at present with bore a hole rolling press by be heated to high temperature perforated steel billit after, calendering, to stretch, be configured as the tubulose of goods, after this, apply thermal treatment and manufacture.By this manufacturing process, steel pipe is made to possess high strength, high tenacity and erosion resistance.
But, in recent years from the view point of the saving energy and the program of omission, use burning optimization on line, the thermal treatment namely in tubulation line, the simplification of investigation manufacturing course.The heat being conceived to effectively utilize starting material after hot working to possess especially, does not import quenching program by pipe cool to room temperature after tubulation, thus, realizes the efficient activity significantly saving the energy and manufacturing course, can obtain the effect that manufacturing cost declines.
If burning optimization on line program that is rear in precision work calendering, that adopt direct quenching, after calendering, be not cooled to room temperature, not through the program of phase transformation and reverse transformation, therefore can produce crystallization particle diameter and easily become thick, be difficult to produce excellent toughness and the problem guaranteeing erosion resistance.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of hydraulic pressure steel cylinder weldless steel tube and preparation technology thereof, can improve the performance of steel pipe, and manufacturing process is simple, long service life.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of hydraulic pressure steel cylinder weldless steel tube, it is characterized in that, steel ingot comprises following material and forms by mass fraction: C:15-30 part, Si:2-8 part, Mn:6-15 part, Cr:3-10 part, Al:20-40 part, Ti:1-5 part, V:1-10 part, Zr:1-8 part, Ca: 10-20 part, B:0.8-5.5 part, H:0.1-0.5 part, Pm:0.02-0.2 part and Sm:0.05-0.5 part, all the other are Fe:300-1200 part and impurity: 0.1-0.3 part.
In a preferred embodiment of the present invention, described impurity is the mixture of P, S, N, O and Cu.
In a preferred embodiment of the present invention, described steel ingot also comprises following material and forms by mass fraction: Lu:0.03-0.3 part and Tb:0.01-0.25 part.
In a preferred embodiment of the present invention, steel ingot comprises following material and forms by mass fraction: C:20 part, Si:5 part, Mn:12 part, Cr:5 part, Al:30 part, Ti:1-5 part, V:2 part, Zr:3 part, Ca: 15 parts, B:3 part, H:0.3 part, Pm:0.1 part, Sm:0.. part, Lu:0.2 part and Tb:0.15 part, all the other are Fe:800 part and impurity: 0.2 part.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the preparation technology providing a kind of hydraulic pressure steel cylinder weldless steel tube, comprise the following steps: steel ingot through smelting, refining, vacuum outgas, continuous casting circular tube blank technique, is made blank by a.; B, pipe is put into lubricating fluid carry out dip-coating pre-treatment; C, by the blank soaking after pre-treatment, then carry out hot-puncturing process, the temperature of hot-puncturing process is Ei 1300-1400 DEG C; D, water-cooled is carried out to the pipe after hot-puncturing process, when blank temperature stops water-cooled operation lower than when 500 DEG C; E, carry out Quench and temper operation successively to the weldless steel tube after water-cooled, quenching temperature is 720-830 degree Celsius, and tempering temperature is 450-620 DEG C.
In a preferred embodiment of the present invention, the lubricating fluid in described step b is concentration be 26-32%, ph value is 12.5-13.5, and dosing temperature is 45-55 DEG C, and the treatment time is 35-50 minute.
The invention has the beneficial effects as follows: hydraulic pressure steel cylinder weldless steel tube of the present invention and preparation technology thereof, can improve the performance of steel pipe, manufacturing process is simple, long service life.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1: steel ingot comprises following material and forms by mass fraction: C:20 part, Si:5 part, Mn:12 part, Cr:5 part, Al:30 part, Ti:1-5 part, V:2 part, Zr:3 part, Ca: 15 parts, B:3 part, H:0.3 part, Pm:0.1 part, Sm:0.. part, Lu:0.2 part and Tb:0.15 part, all the other are Fe:800 part and impurity: 0.2 part.
A preparation technology for hydraulic pressure steel cylinder weldless steel tube, comprises the following steps: steel ingot through smelting, refining, vacuum outgas, continuous casting circular tube blank technique, is made blank by a.; B, pipe is put into lubricating fluid carry out dip-coating pre-treatment, the lubricating fluid in step b is concentration be 26%, ph value is 12.5, and dosing temperature is 45 DEG C, and the treatment time is 35 minutes; C, by the blank soaking after pre-treatment, then carry out hot-puncturing process, the temperature of hot-puncturing process is Ei 1300 DEG C; D, water-cooled is carried out to the pipe after hot-puncturing process, when blank temperature stops water-cooled operation lower than when 500 DEG C; E, carry out Quench and temper operation successively to the weldless steel tube after water-cooled, quenching temperature is 720 degrees Celsius, and tempering temperature is 450 DEG C.
Embodiment 2:C:15-30 part, Si:2-8 part, Mn:6-15 part, Cr:3-10 part, Al:20-40 part, Ti:1-5 part, V:1-10 part, Zr:1-8 part, Ca: 10-20 part, B:0.8-5.5 part, H:0.1-0.5 part, Pm:0.02-0.2 part, Sm:0.05-0.5 part, Lu:0.03-0.3 part and Tb:0.01-0.25 part, all the other are Fe:1200 part and impurity: 0.3 part.
A preparation technology for hydraulic pressure steel cylinder weldless steel tube, comprises the following steps: steel ingot through smelting, refining, vacuum outgas, continuous casting circular tube blank technique, is made blank by a.; B, pipe is put into lubricating fluid carry out dip-coating pre-treatment, the lubricating fluid in step b is concentration be 32%, ph value is 13.5, and dosing temperature is 55 DEG C, and the treatment time is 50 minutes; C, by the blank soaking after pre-treatment, then carry out hot-puncturing process, the temperature of hot-puncturing process is Ei 1400 DEG C; D, water-cooled is carried out to the pipe after hot-puncturing process, when blank temperature stops water-cooled operation lower than when 500 DEG C; E, carry out Quench and temper operation successively to the weldless steel tube after water-cooled, quenching temperature is 830 DEG C, and tempering temperature is 620 DEG C.
Embodiment 3:C:15-30 part, Si:2-8 part, Mn:6-15 part, Cr:3-10 part, Al:20-40 part, Ti:1-5 part, V:1-10 part, Zr:1-8 part, Ca: 10-20 part, B:0.8-5.5 part, H:0.1-0.5 part, Pm:0.02-0.2 part, Sm:0.05-0.5 part, Lu:0.03-0.3 part and Tb:0.01-0.25 part, all the other are Fe:300 part and impurity: 0.1 part.
A preparation technology for hydraulic pressure steel cylinder weldless steel tube, comprises the following steps: steel ingot through smelting, refining, vacuum outgas, continuous casting circular tube blank technique, is made blank by a.; B, pipe is put into lubricating fluid carry out dip-coating pre-treatment, the lubricating fluid in step b is concentration be 30%, ph value is 13, and dosing temperature is 50 DEG C, and the treatment time is 45 minutes; C, by the blank soaking after pre-treatment, then carry out hot-puncturing process, the temperature of hot-puncturing process is Ei 1350 DEG C; D, water-cooled is carried out to the pipe after hot-puncturing process, when blank temperature stops water-cooled operation lower than when 500 DEG C; E, carry out Quench and temper operation successively to the weldless steel tube after water-cooled, quenching temperature is 800 degrees Celsius, and tempering temperature is 500 DEG C.
Be different from prior art, hydraulic pressure steel cylinder weldless steel tube of the present invention and preparation technology thereof, can improve the performance of steel pipe, and manufacturing process is simple, long service life.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (6)

1. a hydraulic pressure steel cylinder weldless steel tube, it is characterized in that, steel ingot comprises following material and forms by mass fraction: C:15-30 part, Si:2-8 part, Mn:6-15 part, Cr:3-10 part, Al:20-40 part, Ti:1-5 part, V:1-10 part, Zr:1-8 part, Ca: 10-20 part, B:0.8-5.5 part, H:0.1-0.5 part, Pm:0.02-0.2 part and Sm:0.05-0.5 part, all the other are Fe:300-1200 part and impurity: 0.1-0.3 part.
2. hydraulic pressure steel cylinder weldless steel tube according to claim 1, is characterized in that, described impurity is the mixture of P, S, N, O and Cu.
3. hydraulic pressure steel cylinder weldless steel tube according to claim 1, it is characterized in that, described steel ingot also comprises following material and forms by mass fraction: Lu:0.03-0.3 part and Tb:0.01-0.25 part.
4. hydraulic pressure steel cylinder weldless steel tube according to claim 3, it is characterized in that, steel ingot comprises following material and forms by mass fraction: C:20 part, Si:5 part, Mn:12 part, Cr:5 part, Al:30 part, Ti:1-5 part, V:2 part, Zr:3 part, Ca: 15 parts, B:3 part, H:0.3 part, Pm:0.1 part, Sm:0.. part, Lu:0.2 part and Tb:0.15 part, all the other are Fe:800 part and impurity: 0.2 part.
5. a preparation technology for hydraulic pressure steel cylinder weldless steel tube as claimed in claim 1, is characterized in that, comprise the following steps:
A. steel ingot is passed through smelting, refining, vacuum outgas, continuous casting circular tube blank technique, make blank;
B, pipe is put into lubricating fluid carry out dip-coating pre-treatment;
C, by the blank soaking after pre-treatment, then carry out hot-puncturing process, the temperature of hot-puncturing process is Ei 1300-1400 DEG C;
D, water-cooled is carried out to the pipe after hot-puncturing process, when blank temperature stops water-cooled operation lower than when 500 DEG C;
E, carry out Quench and temper operation successively to the weldless steel tube after water-cooled, quenching temperature is 720-830 degree Celsius, and tempering temperature is 450-620 DEG C.
6. the preparation technology of hydraulic pressure steel cylinder weldless steel tube as claimed in claim 5, is characterized in that, the lubricating fluid in described step b is concentration be 26-32%, ph value is 12.5-13.5, and dosing temperature is 45-55 DEG C, and the treatment time is 35-50 minute.
CN201410397222.1A 2014-08-14 2014-08-14 Seamless steel pipe for hydraulic steel cylinder and preparation technology thereof Pending CN104264067A (en)

Priority Applications (1)

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CN201410397222.1A CN104264067A (en) 2014-08-14 2014-08-14 Seamless steel pipe for hydraulic steel cylinder and preparation technology thereof

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Application Number Priority Date Filing Date Title
CN201410397222.1A CN104264067A (en) 2014-08-14 2014-08-14 Seamless steel pipe for hydraulic steel cylinder and preparation technology thereof

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CN104264067A true CN104264067A (en) 2015-01-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105018816A (en) * 2015-08-05 2015-11-04 启东市佳宝金属制品有限公司 Corrosion resisting alloy
CN107883073A (en) * 2017-10-27 2018-04-06 合肥紫金钢管股份有限公司 A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe
CN107906268A (en) * 2017-10-27 2018-04-13 合肥紫金钢管股份有限公司 High-intensity weather-proof high longitudinal submerged arc welded pipe is used in a kind of outdoor building construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105018816A (en) * 2015-08-05 2015-11-04 启东市佳宝金属制品有限公司 Corrosion resisting alloy
CN107883073A (en) * 2017-10-27 2018-04-06 合肥紫金钢管股份有限公司 A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe
CN107906268A (en) * 2017-10-27 2018-04-13 合肥紫金钢管股份有限公司 High-intensity weather-proof high longitudinal submerged arc welded pipe is used in a kind of outdoor building construction
CN107906268B (en) * 2017-10-27 2019-09-27 合肥紫金钢管股份有限公司 A kind of outdoor building construction high-intensity weather-proof high longitudinal submerged arc welded pipe
CN107883073B (en) * 2017-10-27 2019-09-27 合肥紫金钢管股份有限公司 A kind of prestressed concrete pipe pile construction longitudinal submerged arc welded pipe

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Application publication date: 20150107