CN1843682A - High-toughness welding rod by quenching and tempering 10CrNi3MoV steel - Google Patents
High-toughness welding rod by quenching and tempering 10CrNi3MoV steel Download PDFInfo
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- CN1843682A CN1843682A CN 200610046558 CN200610046558A CN1843682A CN 1843682 A CN1843682 A CN 1843682A CN 200610046558 CN200610046558 CN 200610046558 CN 200610046558 A CN200610046558 A CN 200610046558A CN 1843682 A CN1843682 A CN 1843682A
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- 10crni3mov
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Abstract
The invention relates to a high-tenacity welding rod used in 10CrNi3MOV steel adjusted wedding to produce high-pressure air bottle, which can solve the problems of present solder rod that lower mechanical property and lower anti-impact property. Said invention comprises: C in 0.03-0.07%, Si<=0.25%, Mn in 1.0-1.5%, Ni in 3.2-3.6%, Cr in 1.4-1.8%, Mo in 0.3-0.5%, V in 0.04-0.07%, S<=0.010%;P<=0.010%, and the left is Fe. And it has the advantages that: since it improves the contents of Ni, Cr and V, the integrated mechanical property, tenacity and low-temperature tenacity are improved, while the working pressure of air bottle is improved from 19.6Mpa to 24.5Mpa.
Description
Technical field: the present invention is used for reprocessing welding rod with the gas cylinder welding of 10CrNi3MOV steel quenched and tempered state manufacturing.
Background technology: along with the development of shipbuilding industry, ship design unit proposes to increase the gas cylinder operating pressure, brings up to 24.5Mpa from 19.6Mpa, reaches to alleviate naval vessel weight, increases submerged depth, improves the purpose requirement of the naval vessel capability of antidetonance; Be used for the welding rod that 10CrNi3MOV steel quenched and tempered state welded seam is reprocessed before, its Main Ingredients and Appearance Ni 2.3～2.6, Cr 0.7～1.0 two kind of content is on the low side, welding back weld metal comprehensive mechanical performance is on the low side,-50 ℃ of v-notch ballistic works in modified back only are the 27J level, the gas cylinder operating pressure only reaches 19.6Mpa, do not satisfy ship design unit and propose to increase the requirement that the gas cylinder operating pressure reaches 24.5Mpa, thereby can not reach and alleviate naval vessel weight, increase submerged depth, improve the purpose requirement of the naval vessel capability of antidetonance.
Summary of the invention: the purpose of this invention is to provide a kind of being used for makes the high-tenacity welding electrodes that the gas cylinder welding is reprocessed with 10CrNi3MOV steel quenched and tempered state, satisfy gas cylinder welding back comprehensive mechanical performance requirement, improve-50 ℃ of v-notch ballistic works in modified back, make the gas cylinder operating pressure reach 24.5Mpa; The welding rod of the object of the invention is to be realized by following component and content: high-tenacity welding electrodes is used in the welding of 10CrNi3MoV steel quenched and tempered state: its composition comprises: C:0.03～0.07%; Si≤0.25%; Mn:1.0～1.5%; Ni:3.2～3.6%; Cr:1.4～1.8%; Mo:0.3～0.5%; V; 0.04～0.07%; S :≤0.010%; P :≤0.010%; Surplus Fe.
Advantage of the present invention: this welding rod is used for reprocessing of weld seam after the welding of gas cylinder of 10CrNi3MOV steel quenched and tempered state manufacturing, the comprehensive mechanical performance of weld seam satisfies the product comprehensive mechanical performance made from the 10CrNi3MOV steel and requires: yield strength 〉=620Mpa, tensile strength 〉=760Mpa, percentage elongation 〉=16%, the contraction percentage of area 〉=50%, the index request of quenched and tempered state-50 ℃ v-notch ballistic work 〉=65J, the gas cylinder operating pressure of using 10CrNi3MOV steel quenched and tempered state to make reaches 24.5Mpa from former 19.6Mpa.
The specific embodiment: high-tenacity welding electrodes is used in the welding of 10CrNi3MOV steel quenched and tempered state: its composition comprises: carbon C:0.03～0.07%; Silicon Si :≤0.25%; Manganese Mn:1.0～1.5%; Nickel: 3.2～3.6%; Chromium Cr:1.4～1.8%; Molybdenum Mo:0.3～0.5%; Vanadium V:0.04～0.07%; Sulphur S :≤0.010%; Phosphorus P≤0.010%; Surplus is iron Fe.
Welding rod alloy adds manganese Mn, the silicon Si element of appropriate amount, and good deoxidation can be provided, and desulfurization condition, thereby the anti-pore performance of assurance weld seam, and crack-resistance sensitivity reduce the defective of welding; Add the nickel element of appropriate amount, can improve weld strength, can improve the toughness, particularly low-temperature flexibility of weld seam simultaneously, have tangible effect; The molybdenum Mo element that adds appropriate amount can be eliminated weld metal temper brittleness tendency, guarantees that weld seam has enough toughness levels; Add the trace vanadium V element, the crystal grain of energy refinement weld seam improves its toughness; The chromium Cr that adds appropriate amount, the energy crystal grain thinning improves the quenched and tempered state weld strength, improves the quenched and tempered state welding seam toughness; Element nickel, chromium Cr can improve weld strength, can improve the toughness of weld seam simultaneously again, and molybdenum Mo, vanadium V also improve the toughness of weld seam; Therefore nickel brings up to 3.0～3.4% in this welding rod component, and chromium Cr brings up to 1.4～1.8%, increases vanadium V 0.04～0.07%, and under the comprehensive function of each element, the deposited metal comprehensive mechanical performance satisfies product comprehensive mechanical performance index request;
The deposited metal chemical analysis
| Element | C | Si | Mn | Ni | Cr | Mo | S | P | Fe |
| Content % | ≤0.08 | ≤0.25 | 1.0～1.6 | 3.0～3.5 | 1.2～1.7 | 0.3～0.5 | ≤0.010 | ≤0.010 | Surplus |
The deposited metal mechanical performance index
| Rel Mpa | RM Mpa | A ％ | Z ％ | -50 ℃ of v-notch ballistic work J |
| ≥620 | ≥760 | ≥16 | ≥50 | ≥65 |
Deposited metal mechanical performance measured data
| Sequence number | Rel Mpa | RM Mpa | A ％ | Z ％ | J AKV(-50℃) |
| 1 | 660 | 780 | 17 | 55 | 116 |
| 2 | 710 | 800 | 19 | 62 | 93 |
| 3 | 710 | 770 | 18 | 63 | 95 |
The deposited metal diffusible hydrogen content:
Should meet the super hydrogen scope of regulation among the ISO3690-1977/1983E, when promptly mercury process is measured, diffusible hydrogen content≤5ml/100g.
Claims (1)
1, high-tenacity welding electrodes is used in the welding of 10CrNi3MoV steel quenched and tempered state: its composition comprises: C:0.03～0.07%; Si≤0.25%; Mn:1.0～1.5%; Ni:3.2～3.6%; Cr:1.4～1.8%; Mo:0.3～0.5%; V:0.04～0.07%; S :≤0.010%; P :≤0.010%; Surplus Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046558 CN1843682A (en) | 2006-05-12 | 2006-05-12 | High-toughness welding rod by quenching and tempering 10CrNi3MoV steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610046558 CN1843682A (en) | 2006-05-12 | 2006-05-12 | High-toughness welding rod by quenching and tempering 10CrNi3MoV steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1843682A true CN1843682A (en) | 2006-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610046558 Pending CN1843682A (en) | 2006-05-12 | 2006-05-12 | High-toughness welding rod by quenching and tempering 10CrNi3MoV steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1843682A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767254B (en) * | 2008-12-31 | 2011-09-14 | 江苏新华合金电器有限公司 | Ultra-low-carbon martensite wear-resistant automatic welding wire |
| CN110977244A (en) * | 2019-12-25 | 2020-04-10 | 湖北理工学院 | Formula and production process of 07MnNiMoDR steel low-alloy welding rod for spherical tank at-50 DEG C |
-
2006
- 2006-05-12 CN CN 200610046558 patent/CN1843682A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767254B (en) * | 2008-12-31 | 2011-09-14 | 江苏新华合金电器有限公司 | Ultra-low-carbon martensite wear-resistant automatic welding wire |
| CN110977244A (en) * | 2019-12-25 | 2020-04-10 | 湖北理工学院 | Formula and production process of 07MnNiMoDR steel low-alloy welding rod for spherical tank at-50 DEG C |
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