CN101942608A - Steel for offshore mooring chain - Google Patents
Steel for offshore mooring chain Download PDFInfo
- Publication number
- CN101942608A CN101942608A CN 201010503494 CN201010503494A CN101942608A CN 101942608 A CN101942608 A CN 101942608A CN 201010503494 CN201010503494 CN 201010503494 CN 201010503494 A CN201010503494 A CN 201010503494A CN 101942608 A CN101942608 A CN 101942608A
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- steel
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- mooring chain
- chain
- chain link
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Abstract
The invention discloses steel for an offshore mooring chain. The steel comprises the chemical compositions in mass percentage: 0.16 to 0.24 percent of C, 0.17 to 0.37 percent of Si, 1.30 to 1.90 percent of Mn, 0.90 to 1.30 percent of Cr, 0.01 to 0.04 percent of V, 0.20 to 0.65 percent of Ni, 0.15 to 0.35 percent of Mo, less than 0.020 percent of S, less than 0.020 percent of P and the balance of Fe. By redesigning the chemical compositions of the steel for the 3.5 grade offshore mooring chain RQ3S, the contents of Ni element and V element in the steel are increased, and an impact value of the chain link at the temperature of -20 DEG C is improved after quenching and tempering heat treatment, so that the impact value of the chain link after once quenching and tempering heat treatment meets the standard requirement and has 20 J of allowance.
Description
Technical field
The invention belongs to field of metallurgy, specifically a kind of marine mooring chain steel.
Background technology
Three and half at present domestic marine mooring chain RQ3S with in the chemical ingredients of steel owing to not containing the Ni element, though the steel manufacturing cost is lower, but exist make chain link and carry out modified thermal treatment after-20 ℃ of ballistic works (v-notch) lower, underproof situation often appears, need carry out the second time modified or three times modified, not only wasted the thermal treatment expense of great number, and production efficiency is lower, has the insufficient potential risk of ballistic work surplus.
Summary of the invention
In order to overcome the problem that three and half marine mooring chain RQ3S exist with steel in the prior art, the purpose of this invention is to provide a kind of marine mooring chain steel, by three and half marine mooring chain RQ3S are redesigned with the chemical ingredients of steel, increase the Ni constituent content in the steel, improve-20 ℃ of impact values after the modified thermal treatment of chain link, make the once modified thermal treatment of chain link after impact value arrive standard-required and the 20J surplus arranged.
The objective of the invention is to be achieved through the following technical solutions:
A kind of marine mooring chain steel is characterized in that: the chemical ingredients mass percent of this steel is: 0.16%～0.24%C, 0.17%～0.37%Si, 1.30%～1.90%Mn, 0.90～1.30%Cr, 0.01%～0.04%V, 0.20%～0.65%Ni, 0.15%～0.35%Mo, S less than 0.020%, P less than 0.020%, all the other are iron Fe.
The chemical ingredients mass percent of steel is preferably among the present invention: 0.20%C, 0.30%Si, 1.50%Mn, 1.00%Cr, 0.03%V, 0.40%Ni, 0.20%Mo, 0.010%S, 0.010%P, all the other are iron Fe.
Ni constituent content in the steel of the present invention is controlled at 0.20-0.65%, can improve the ballistic work after the modified thermal treatment of chain link.Increase V element simultaneously and come crystal grain thinning, further improve ballistic work.
The present invention is by redesigning with the chemical ingredients of steel three and half marine mooring chain RQ3S, take all factors into consideration cost and impact value, increase Ni element and V element content in the steel, improve-20 ℃ of impact values after the modified thermal treatment of chain link, make the once modified thermal treatment of chain link after impact value arrive standard-required and the 20J surplus arranged.
Embodiment
Embodiment 1
A kind of marine mooring chain steel of the present invention, the chemical ingredients mass percent in this steel is: 0.20%C, 0.30%Si, 1.50%Mn, 1.00%Cr, 0.03%V, 0.40%Ni, 0.20%Mo, 0.010%S, 0.010%P, all the other are iron Fe.
Test shows: press marine mooring chain chain link that mentioned component produces after modified thermal treatment once, chain link weld bond AKV (20 ℃) reaches more than the 99J, and the garlands and the ring back of the body reach more than the 140J, and the ballistic work performance is very excellent, and not only qualified, surplus reaches more than the 40J.
Embodiment 2
Another marine mooring chain steel of the present invention, the chemical ingredients mass percent in this steel is: 0.16%C, 0.17%Si, 1.30%Mn, 0.90%Cr, 0.01%V, 0.20%Ni, 0.15%Mo, 0.020%S, 0.020%P, all the other are iron Fe.
Equally, press marine mooring chain chain link that mentioned component produces after modified thermal treatment once, chain link weld bond AKV (20 ℃) reaches more than the 99J, and the garlands and the ring back of the body reach more than the 140J, and the ballistic work performance is very excellent, and surplus reaches more than the 40J.
Embodiment 3
Another marine mooring chain steel of the present invention, the chemical ingredients mass percent in this steel is: 0.24%C, 0.37%Si, 1.90%Mn, 1.30%Cr, 0.04%V, 0.65%Ni, 0.35%Mo, 0.005%S, 0.005%P, all the other are iron Fe.
Equally, press marine mooring chain chain link that mentioned component produces after modified thermal treatment once, chain link weld bond AKV (20 ℃) reaches more than the 99J, and the garlands and the ring back of the body reach more than the 140J, and the ballistic work performance is very excellent, and surplus reaches more than the 40J.
Claims (2)
1. marine mooring chain steel, it is characterized in that: the chemical ingredients mass percent of this steel is: 0.16%～0.24%C, 0.17%～0.37%Si, 1.30%～1.90%Mn, 0.90～1.30%Cr, 0.01%～0.04%V, 0.20%～0.65%Ni, 0.15%～0.35%Mo, S less than 0.020%, P less than 0.020%, all the other are iron Fe.
2. marine mooring chain steel according to claim 1 is characterized in that: the chemical ingredients mass percent of this steel is: 0.20%C, 0.30%Si, 1.50%Mn, 1.00%Cr, 0.03%V, 0.40%Ni, 0.20%Mo, 0.010%S, 0.010%P, all the other are iron Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010503494 CN101942608A (en) | 2010-09-30 | 2010-09-30 | Steel for offshore mooring chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010503494 CN101942608A (en) | 2010-09-30 | 2010-09-30 | Steel for offshore mooring chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101942608A true CN101942608A (en) | 2011-01-12 |
Family
ID=43434810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010503494 Pending CN101942608A (en) | 2010-09-30 | 2010-09-30 | Steel for offshore mooring chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101942608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103930581A (en) * | 2011-10-26 | 2014-07-16 | 路德-李格和蒂茨链条有限公司 | Hardening steel for lifting, fastening, clamping and/or lashing means and connecting elements, component for lifting, fastening, clamping and/or lashing technology, connecting element and method for production thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089551A (en) * | 1983-10-21 | 1985-05-20 | Sumitomo Metal Ind Ltd | Chain steel having high strength and toughness |
| CN1202533A (en) * | 1998-04-17 | 1998-12-23 | 莱芜钢铁总厂 | High strength high toughness steel for mooring chain and production method of mooring chain |
| CN101397636A (en) * | 2007-09-25 | 2009-04-01 | 宝山钢铁股份有限公司 | High toughness ring chain steel for mine and method for producing the same |
| CN101519751A (en) * | 2008-02-27 | 2009-09-02 | 宝山钢铁股份有限公司 | High-performance marine mooring chain steel and manufacturing method thereof |
-
2010
- 2010-09-30 CN CN 201010503494 patent/CN101942608A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6089551A (en) * | 1983-10-21 | 1985-05-20 | Sumitomo Metal Ind Ltd | Chain steel having high strength and toughness |
| CN1202533A (en) * | 1998-04-17 | 1998-12-23 | 莱芜钢铁总厂 | High strength high toughness steel for mooring chain and production method of mooring chain |
| CN101397636A (en) * | 2007-09-25 | 2009-04-01 | 宝山钢铁股份有限公司 | High toughness ring chain steel for mine and method for producing the same |
| CN101519751A (en) * | 2008-02-27 | 2009-09-02 | 宝山钢铁股份有限公司 | High-performance marine mooring chain steel and manufacturing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103930581A (en) * | 2011-10-26 | 2014-07-16 | 路德-李格和蒂茨链条有限公司 | Hardening steel for lifting, fastening, clamping and/or lashing means and connecting elements, component for lifting, fastening, clamping and/or lashing technology, connecting element and method for production thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110112 |