CN102728966A - Copper-containing high-strength high-toughness welding rod deposited metal - Google Patents
Copper-containing high-strength high-toughness welding rod deposited metal Download PDFInfo
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- CN102728966A CN102728966A CN2012102074354A CN201210207435A CN102728966A CN 102728966 A CN102728966 A CN 102728966A CN 2012102074354 A CN2012102074354 A CN 2012102074354A CN 201210207435 A CN201210207435 A CN 201210207435A CN 102728966 A CN102728966 A CN 102728966A
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Abstract
The invention discloses a copper-containing high-strength high-toughness welding rod deposited metal. The deposited metal belongs to a Mn-Ni-Cr-Cu system which comprises the following chemical components in percentage by weight: C (0.030/0.080), Mn (0.60/0.90), Si (0.15/0.35), Ni( 2.20/2.85), Cr (0.62/1.00), Mo (0.40/0.60), Cu (0.70/1.10) and Fe (the balance). Compared with other high-strength hand-made welding rods, the metal provided by the invention contains a proper amount of C, a proper amount of Ni, and a higher amount of Cu. The deposited metal disclosed by the invention is used for welding 10CrNi5MoV steel, the welding process is good, the yield strength of the deposited metal is above 735Mpa, the elongation coefficient is over 16 percent, the cross section shrinkage rate is greater than 50 percent, and the low-temperature impact at -50 DEG C is over 34J and the deposited metal meets related standards.
Description
Technical field
The present invention relates to a kind of welding material technology, particularly a kind of high strength and high toughness welding rod deposited metal of cupric.
Background technology
At present; The stick electrode that China's hull structural steel welding is adopted, the overwhelming majority is the common low alloy structural steel welding rod, adopts common H08 core wire; The excessive alloying element of coating; Ni content in the deposited metal does not contain Cu below 1.4%, like the TH907 welding rod of 390MPa, the TH945 welding rod of 440MPa etc.With welding rod research is arranged also for high-tensile structural steel, like patent 200310100196 welding rods, its deposited metal yield strength is more than 950MPa, and Mn content is 1.2 ~ 1.9%, and the Mo precipitation strength is main, and Mo content does not contain Cu more than 0.66%; Patent 03104883.8 welding rod, its deposited metal yield strength are more than 760MPa, and Mn content is 1.2 ~ 1.6%, and the Mo precipitation strength is main, and Mo content does not contain Cu more than 0.66%; Patent 200610066049.2 welding rods, its deposited metal yield strength are high Ni welding rod more than 780MPa, Ni content contains elements such as Co, Nb simultaneously more than 7.1%, does not contain Cu; Patent 200610017847.6 welding rods, its deposited metal yield strength are more than 950MPa, and Mn, Mo strengthen, and Mn content is 1.2 ~ 2.2%, and Mo content does not contain Cu more than 0.60%.Patent 200410037809.8 welding rods, its deposited metal yield strength are more than 780MPa, and Ni content is 2.9～6.9%, and Cu content is below 0.9%.These high strength electrodes are not used for the Ship Structure welding at present as yet.The V840 welding rod of the yield strength 785MPa that has used contains higher Cr (0.5 ~ 1.0%), Mo (0.3 ~ 0.6%) in its deposited metal, do not contain Cu.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high strength and high toughness welding rod deposited metal of cupric, can be applicable to the high strength hull steel manual welding, has high strength, high tenacity.
For the purpose that realizes solving the problems of the technologies described above, the present invention has adopted following technical scheme:
The high strength and high toughness welding rod deposited metal of a kind of cupric of the present invention belongs to Mn-Ni-Cr-Cu system, and its chemical composition mass percent is: C:0.030/0.080; Mn:0.60/0.90; Si:0.15/0.35; Ni:2.20/2.85; Cr:0.62/1.00; Mo:0.40/0.60; Cu:0.70/1.10; All the other are Fe.
Preferably, the high strength and high toughness welding rod deposited metal of described cupric, its chemical composition mass percent is: C:0.046/0.072; Mn:0.60/0.83; Si:0.15/0.35; Ni:2.48/2.66; Cr:0.62/1.00; Mo:0.44/0.60; Cu:0.93/1.10; All the other are Fe.
Further, the high strength and high toughness welding rod deposited metal of described cupric, its chemical composition mass percent: S≤0.020; P≤0.018.
The present invention compares with other high-strength steel stick electrode, mainly contains following characteristics:
(1) contains the proper C element;
(2) the Ni constituent content is moderate;
(3) contain higher Cu.
For the high strength and high toughness welding rod deposited metal art of cupric, because the restriction of the base metal performance of welding, the material property of deposited metal itself reaches certain standard can reach instructions for use.Too high, material property is considerably beyond the bulk material that is welded, and then index loses practical significance.Therefore; The technical problem that those skilled in the art mainly make great efforts to solve is how to reduce cost, improves the product matching, goods durability etc.; Particularly how not use or to reduce under the situation of using rare element; Produce qualified product, enlarge the scope of application of product, satisfy demand of practical production.
C in the weld seam can make weld metal keep enough intensity, and can improve the weld seam corrosion resistance.For high strength steel, C content height can make the weldability of steel worsen, and is easy to generate weld crack.Therefore, among the present invention, C content need be controlled as limited element.
Mn not only can improve weld strength as alloy element, and can in welding process, make the weld seam deoxidation, improves the weld seam degree of purity, improves welding point toughness, and therefore, the present invention requires to keep in the deposited metal Mn amount that contains of certain limit.
Si belongs to alloy element, in welding process, participates in deoxidation and alloying, simultaneously to improving weld strength, improving welding procedure property and have benefit.But the Si too high levels can reduce the weld seam low-temperature impact work, and therefore, the present invention also has clearly regulation to the Si content range.
The Cr element can improve weld strength and hardness, improves the weld metal corrosion resistance, but the too high meeting of Cr makes the weld seam embrittlement, causes toughness to descend.The present invention is limited in below 1.00% Cr content.
Ni is as alloying element, and in the low-alloy structural steel welding material, main effect is the low-temperature flexibility that improves weld seam.But the Ni too high levels can significantly increase the welding rod cost.The present invention is limited in 2.20 ~ 2.90% in order to reach the technical indicator of weld seam high tenacity with Ni content.
Mo not only can improve weld strength within the specific limits, and can crystal grain thinning, improves welding seam toughness, and therefore, the present invention is controlled at Mo content in 0.40 ~ 0.60% the scope.
Cu can crystal grain thinning in weld seam, improves weld seam obdurability and resistance to corrosion.Cu content is limited between 0.70 ~ 1.10% among the present invention.
S, P are objectionable impurities, cause the welding point crackle easily, need strict restriction.S is limited in below 0.020% among the present invention, and P is limited in below 0.018%.
Through adopting technique scheme, the present invention has following beneficial effect:
Adopt deposited metal welding 10CrNi5MoV steel of the present invention, welding procedure property is good, and the deposited metal yield strength is more than 735MPa, and percentage elongation is greater than 16%, and the contraction percentage of area is greater than 50%, and-50 ℃ of low-temperature impact works reach more than the 34J, satisfy related standard requirements.
The specific embodiment
Adopt the welding rod welding 10CrNi5MoV steel of this deposited metal composition, prepared deposited metal test specimen, carried out basic performance tests, the result lists in table 1 ~ table 3.Wherein table 1 is an embodiment deposited metal test plate (panel) welding condition; Table 2 is the deposited metal composition of embodiment one to embodiment five; Table 3 is the deposited metal mechanical property of embodiment one to embodiment five.
Table 1
| Welding current, A | Arc voltage, V | Speed of welding, cm/min | Temperature between the road, ℃ |
| 170±10 | 24~28 | 13~17 | 100±20 |
Table 2 unit is a mass percent
| Element | C | Si | Mn | Cr | Ni | Mo | Cu | S | P |
| Embodiment one | 0.030 | 0.316 | 0.900 | 0.832 | 2.20 | 0.40 | 0.70 | 0.0069 | 0.017 |
| Embodiment two | 0.050 | 0.264 | 0.702 | 0.690 | 2.85 | 0.47 | 0.814 | 0.0076 | 0.013 |
| Embodiment three | 0.046 | 0.350 | 0.830 | 1.00 | 2.48 | 0.60 | 0.93 | 0.0110 | 0.015 |
| Embodiment four | 0.080 | 0.328 | 0.600 | 0.65 | 2.81 | 0.52 | 1.03 | 0.0082 | 0.018 |
| Embodiment five | 0.072 | 0.150 | 0.633 | 0.62 | 2.66 | 0.44 | 1.10 | 0.0098 | 0.013 |
Table 3
Claims (3)
1. the high strength and high toughness welding rod deposited metal of a cupric is characterized in that: deposited metal belongs to Mn-Ni-Cr-Cu system, and its chemical composition mass percent is: C:0.030/0.080; Mn:0.60/0.90; Si:0.15/0.35; Ni:2.20/2.85; Cr:0.62/1.00; Mo:0.40/0.60; Cu:0.70/1.10; All the other are Fe.
2. according to the high strength and high toughness welding rod deposited metal of the said cupric of claim 1, it is characterized in that: its chemical composition mass percent is: C:0.046/0.072; Mn:0.60/0.83; Si:0.15/0.35; Ni:2.48/2.66; Cr:0.62/1.00; Mo:0.44/0.60; Cu:0.93/1.10; All the other are Fe.
3. according to the high strength and high toughness welding rod deposited metal of claim 1 or 2 each said cuprics, it is characterized in that: its chemical composition mass percent: S≤0.020; P≤0.018.
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| CN2012102074354A CN102728966A (en) | 2012-06-21 | 2012-06-21 | Copper-containing high-strength high-toughness welding rod deposited metal |
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| CN2012102074354A CN102728966A (en) | 2012-06-21 | 2012-06-21 | Copper-containing high-strength high-toughness welding rod deposited metal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962605A (en) * | 2012-11-16 | 2013-03-13 | 中国船舶重工集团公司第七二五研究所 | Low-carbon high-copper high-strength welding wire for gas protection welding |
| CN105328363A (en) * | 2015-12-02 | 2016-02-17 | 四川西冶新材料有限公司 | High-strength, high-toughness and seawater corrosion-resistant welding rod for ocean engineering |
| CN105345311A (en) * | 2015-11-26 | 2016-02-24 | 钢铁研究总院 | High-corrosion-resistance welding rod for railway freight car |
| CN105397332A (en) * | 2015-11-26 | 2016-03-16 | 钢铁研究总院 | Highly corrosion resistant flux-cored wire for railway freight car |
| CN105436742A (en) * | 2015-12-12 | 2016-03-30 | 四川西冶新材料有限公司 | Hydroelectric 800 MPa low-alloy high-strength steel welded rod and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002336989A (en) * | 2001-05-16 | 2002-11-26 | Sumikin Welding Ind Ltd | Welding material for seashore weather resistant steel |
| CN1433869A (en) * | 2003-02-21 | 2003-08-06 | 安泰科技股份有限公司 | Low-alloy high-strength high-toughness electric welding rod |
| JP2005349466A (en) * | 2004-06-14 | 2005-12-22 | Kobe Steel Ltd | Weld metal, welding wire, and electroslag welding method |
-
2012
- 2012-06-21 CN CN2012102074354A patent/CN102728966A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002336989A (en) * | 2001-05-16 | 2002-11-26 | Sumikin Welding Ind Ltd | Welding material for seashore weather resistant steel |
| CN1433869A (en) * | 2003-02-21 | 2003-08-06 | 安泰科技股份有限公司 | Low-alloy high-strength high-toughness electric welding rod |
| JP2005349466A (en) * | 2004-06-14 | 2005-12-22 | Kobe Steel Ltd | Weld metal, welding wire, and electroslag welding method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962605A (en) * | 2012-11-16 | 2013-03-13 | 中国船舶重工集团公司第七二五研究所 | Low-carbon high-copper high-strength welding wire for gas protection welding |
| CN105345311A (en) * | 2015-11-26 | 2016-02-24 | 钢铁研究总院 | High-corrosion-resistance welding rod for railway freight car |
| CN105397332A (en) * | 2015-11-26 | 2016-03-16 | 钢铁研究总院 | Highly corrosion resistant flux-cored wire for railway freight car |
| CN105328363A (en) * | 2015-12-02 | 2016-02-17 | 四川西冶新材料有限公司 | High-strength, high-toughness and seawater corrosion-resistant welding rod for ocean engineering |
| CN105436742A (en) * | 2015-12-12 | 2016-03-30 | 四川西冶新材料有限公司 | Hydroelectric 800 MPa low-alloy high-strength steel welded rod and preparation method thereof |
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Application publication date: 20121017 |