CN103170763B - Welding rod special for nuclear power 20-control chrome steel - Google Patents
Welding rod special for nuclear power 20-control chrome steel Download PDFInfo
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- CN103170763B CN103170763B CN201310025106.2A CN201310025106A CN103170763B CN 103170763 B CN103170763 B CN 103170763B CN 201310025106 A CN201310025106 A CN 201310025106A CN 103170763 B CN103170763 B CN 103170763B
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Abstract
The invention discloses a welding rod special for nuclear power 20-control chrome steel. The elements in deposited metal of the welding rod comprises: <=0.15wt% of C, <=0.75wt% of Si, <=1.60wt% of Mn, <=0.020wt% of P, <=0.020wt% of S, <=0.30wt% of Ni, 0.17-0.30wt% of Cr, <=0.30wt% of Mo, and <=0.20wt% of Cu. Compared with the prior art, the chemical components of the deposited metal of the welding rod special for the nuclear power 20-control chrome steel are close to those of the nuclear power 20-control chrome steel, mechanical property is better than an existing E5015 welding rod or equal to the existing E5015 welding rod, and therefore anti-FAC performance of a 20-control chrome steel welding line finished by the welding rod is improved notably, the quality of the 20-control chrome steel welding line of a nuclear power station is ensured in the process of operation, and the welding rod special for the nuclear power 20-control chrome steel has important significance to safe operation of a nuclear power unit.
Description
Technical field
The present invention relates to nuclear power 20 and control chromium steel special welding material, especially a kind of 20 control chromium steel welding rod special for special that obviously can reduce FAC corrosion rate.
Background technology
High, the flow of velocity of medium large (being about 1.7 ~ 1.9 times of thermoelectricity) in the carrier pipe of nuclear power plant; higher and " Flow accelerated corrosion (the FAC) " phenomenon caused of flowing velocity because of delivering vapor and water can be produced; namely carbon steel pipe inner surface is under a large amount of, swiftly flowing carbonated drink are washed away; inwall has the oxide layer deterioration, thinning of defencive function, makes the phenomenon that steel matrix is deteriorated, annual corrosion rate increases.May pipe explosion accident be caused when Flow accelerated corrosion phenomenon is serious, therefore need the vapour water erosion property improving carrier pipe.
According to existing research data, in carbon steel, the corrosion rate of FAC depends on the factors such as medium temperature, flow velocity, pH value, electrode potential, tubing alloying element, thermodynamics, and wherein tubing alloying element can solve by selecting steel grades.Show after deliberation, the corrosion rate that Cr content obviously can reduce FAC is increased in carbon steel, " in relative reduction-steel Cr% relation " result of the test shows, as Cr content > 0.04% in carbon steel, FAC speed declines rapidly: the corrosion rate of pipe material Cr content≤0.04% time is higher, and corrosion rate is substantially suitable, is assumed to 1, along with the increase of Cr content, corrosion rate reduces gradually; When Cr content reaches 0.2%, the relative velocity of corrosion is 0.2; When Cr content reaches 1%, the relative velocity of corrosion is 0.045.20 control chromium steel are exactly the new steel grade had compared with high resistance FAC performance developed in this context, and its chemical composition and mechanical property are as shown in table 1, table 2.
Table 1,20 control chromium steel chemical component table/wt%
Table 2,20 control chromium steel mechanical property tables
The anti-FAC purposes of 20 control chromium steel, require the Cr elemental composition also in the welding material deposited metal mated with it with certain content, to make the Cr also in weld metal with certain content, the weld metal part of such pipeline also has anti-FAC ability.Owing to also not controlling the welding material special that chromium steel matches at present with 20, chemical composition, mechanical property and 20 therefore can only be selected in Construction of Nuclear Electricity to control the close E5015 welding rod of chromium steel and to carry out welding of 20 control chromium steel.
E5015 welding rod is that its chemical composition, mechanical property are as shown in table 3 for welding rod that is common 20, the welding of 16Mn steel.As can be seen from Table 3, the chromium constituent content in E5015 welding rod deposited metal is few, can not meet the welding requirements of 20 control chromium steel.
Table 3, E5015 welding rod chemical composition (wt%), mechanical property table
In view of this, the necessary welding rod special for special providing a kind of chemical composition and mechanical property and 20 to control chromium steel to mate completely.
Summary of the invention
The object of the invention is to: the welding rod special for special providing a kind of chemical composition and mechanical property and 20 to control chromium steel to mate completely, to ensure the demand of the engineering construction of nuclear power projects mass and follow-up operation maintenance.
In order to realize foregoing invention object, inventor, through concentrating on studies and testing, finds that in 20 control chromium steel welding rod special for special deposited metals, included element optimum content is respectively: C content≤0.15wt%, Si content≤0.75wt%, Mn content≤1.60wt%, P content≤0.020wt%, S content≤0.020wt%, Ni content≤0.30wt%, Cr content 0.17-0.30wt%, Mo content≤0.30wt%, Cu content≤0.20wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, described welding rod comprises heart yearn and is coated in the coating on heart yearn, and its heart yearn is the steel wire with following chemical composition: C content≤0.09wt%, Si content≤0.03wt%, Mn content 0.35-0.55wt%, P content≤0.020wt%, S content≤0.020wt%, Ni content≤0.30wt%, Cr content≤0.20wt%, Cu content≤0.020wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, and the formula of described coating is as follows: carbonate 20-55wt%, fluoride 10-30wt%, silicate 5-20wt%, ferroalloy 10-30wt%, arc stabilizer 5-10wt%, binding agent 1-5wt%, other 3-8wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, and described welding rod deposited metal comprises following element: C content 0.078wt%, Si content 0.45wt%, Mn content 0.98wt%, P content 0.019wt%, S content 0.012wt%, Ni content 0.073wt%, Cr content 0.29wt%, Cu content 0.033wt%, V content 0.008wt%, Al content 0.001wt%, Mo content are no more than 0.30wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, and described welding rod deposited metal comprises following element: C content 0.067wt%, Si content 0.52wt%, Mn content 1.18wt%, P content 0.018wt%, S content 0.016wt%, Ni content 0.011wt%, Cr content 0.26wt%, Cu content 0.026wt%, V content 0.008wt%, Al content 0.001wt%, Mo content are no more than 0.30wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, and described welding rod deposited metal comprises following element: C content 0.049wt%, Si content 0.50wt%, Mn content 1.14wt%, P content 0.018wt%, S content 0.014wt%, Ni content 0.011wt%, Cr content 0.26wt%, Cu content 0.025wt%, V content 0.008wt%, Al content 0.002wt%, Mo content are no more than 0.30wt%.
The one controlling chromium steel welding rod special for special as nuclear power 20 of the present invention is improved, and the specification of described welding rod is Φ 2.6mm, Φ 3.2mm or Φ 4.0mm.
Compared with prior art, the chemical composition and 20 that nuclear power 20 of the present invention controls chromium steel welding rod special for special deposited metal controls chromium steel relatively, mechanical property is also better than existing E5015 welding rod or suitable with existing E5015 welding rod, the anti-FAC performance of the 20 control chromium steel weld seams therefore using it to complete is significantly increased, ensure that nuclear power station 20 controls the quality of chromium steel weld seam in operation process, significant to the safe operation of nuclear power generating sets.Visible, nuclear power 20 of the present invention is controlled chromium steel welding rod special for special and is efficiently solved the welding material problem do not controlled chromium steel at present with 20 and match.
Detailed description of the invention
In order to make object of the present invention, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.Should be understood that, the detailed description of the invention described in this description is only used to explain the present invention, is not intended to limit the present invention.
In order to control chromium steel coordinate with 20, inventor, through many experiments, has shown that nuclear power 20 of the present invention controls the design load of the chemical composition of chromium steel welding rod special for special deposited metal, mechanical property, heart yearn chemical composition and coating recipe, as shown in table 4-7.
Table 4,20 control chromium steel welding rod special for special deposited metal composition design load/wt%
Table 5,20 control chromium steel welding rod special for special deposited metal mechanical property design loads
Table 6,20 control chromium steel welding rod special for special heart yearn Design of Chemical Composition value/wt%
| The trade mark | C | Si | Mn | P | S | Ni | Cr | Cu |
| 20 control chromium heart yearns | ≤0.09 | ≤0.03 | 0.35-0.55 | ≤0.020 | ≤0.020 | ≤0.30 | ≤0.20 | ≤0.020 |
According to role in welding process, coating component can be divided into usually by effect:
1) arc stabilizer: Main Function improves the striking performance of welding rod and improves the stability of welding arc, all materials that gas ionization can be made to reduce, can improve the stability of electric arc, the general compound adopted containing alkali and alkaline earth metal ions, as the compound of potassium, sodium, calcium; Chromium electrode coating arc stabilizer is controlled in the present invention 20 can from potash, sodium carbonate, niter, waterglass and marble or lime stone, granite, feldspar, titanium dioxide etc.;
2) slag former: Main Function to form the slag with certain physics, chemical property, produces good mechanical protection effect and Metallurgical processing effect; Chromium electrode coating slag former is controlled in the present invention 20 can from ilmenite, bloodstone, rutile, feldspar, marble, granite, fluorite, magnesia, violent ore deposit, titanium dioxide etc.;
3) gas-forming agent: Main Function causes protective atmosphere, is also conducive to the droplet transfer simultaneously; The gas-forming agent constituent of chromium electrode coating is controlled in the present invention 20 can from carbonate mineral (as marble, magnesite, dolomite etc.) and organic matter (as wood powder, cellulose, starch etc.);
4) deoxidier: Main Function is to slag and weld metal deoxidation; Chromium coating deoxidier constituent is controlled in the present invention 20 can from ferromanganese, ferrosilicon, ferro-aluminum, ferrotianium, graphite etc.;
5) alloying constituent: Main Function infiltrates necessary alloying component in weld metal, to compensate the alloying element of scaling loss or evaporation and to add the alloying element of property; The component that chromium electrode coating alloying constituent is controlled in the present invention 20 is mainly considered to use evanohm, manganese alloy;
6) diluent: Main Function is the viscosity reducing welding slag, increases the mobility of slag; The component of chromium electrode coating diluent is controlled in the present invention 20 can from fluorite, feldspar, ilmenite, titanium dioxide, rutile, manganese ore etc.;
7) bonding agent: Main Function is that the stock that made a noise by coating is bonded on core wire; The present invention 20 controls chromium electrode coating adhesive component from the material etc. for waterglass, natural gum and so on;
8) plasticizer: Main Function is plasticity and the slip of improving coating, makes it to be easy to mechanical extrusion on core wire; The component of chromium electrode coating plasticizer is controlled in the present invention 20 can from mica, white clay, titanium dioxide etc.
When welding rod coating recipe design; need according to the effect of coating when welding; consider the many factors such as gas slag Combined Protection effect and welding rod operability of coating as a whole, table 7 be control with nuclear power 20 of the present invention chromium steel welding rod special for special heart yearn with the use of coating recipe design load.
Table 7,20 control chromium steel welding rod special for special coating recipe design loads
| Title | Carbonate | Fluoride | Silicate | Ferroalloy | Arc stabilizer | Binding agent | Other |
| Mass fraction (%) | 20-55 | 10-30 | 5-20 | 10-30 | 5-10 | 1-5 | 3-8 |
After tested, the three kind of 20 control chromium steel welding rod special for special deposited metal composition produced according to the above-mentioned design load of the present invention and mechanical property thereof are as shown in table 8-9.
Table 8, each embodiment welding rod deposited metal composition test result/wt%
| Embodiment | C | Si | Mn | P | S | Ni | Cr | Cu | V | Al | Mo |
| Φ2.6mm | 0.078 | 0.45 | 0.98 | 0.019 | 0.012 | 0.073 | 0.29 | 0.033 | 0.008 | 0.001 | Trace, and be no more than 0.30 |
| Φ3.2mm | 0.067 | 0.52 | 1.18 | 0.018 | 0.016 | 0.011 | 0.26 | 0.026 | 0.008 | 0.001 | Trace, and be no more than 0.30 |
| Φ4.0mm | 0.049 | 0.50 | 1.14 | 0.018 | 0.014 | 0.011 | 0.26 | 0.025 | 0.008 | 0.002 | Trace, and be no more than 0.30 |
Table 9, each embodiment welding rod deposited metal mechanical experimental results
Compared with prior art, the chemical composition and 20 that nuclear power 20 of the present invention controls chromium steel welding rod special for special deposited metal controls chromium steel relatively, mechanical property is also better than existing E5015 welding rod or suitable with existing E5015 welding rod, the anti-FAC performance of the 20 control chromium steel weld seams therefore using it to complete is significantly increased, ensure that nuclear power station 20 controls the quality of chromium steel weld seam in operation process, significant to the safe operation of nuclear power generating sets.Visible, nuclear power 20 of the present invention is controlled chromium steel welding rod special for special and is efficiently solved the welding material problem do not controlled chromium steel at present with 20 and match.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the present invention is not limited to detailed description of the invention disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this description, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (6)
1. nuclear power 20 controls a chromium steel welding rod special for special, it is characterized in that: described welding rod deposited metal comprises following element: C content≤0.15wt%, Si content≤0.75wt%, Mn content≤1.60wt%, P content≤0.020wt%, S content≤0.020wt%, Ni content≤0.30wt%, Cr content 0.17-0.30wt%, Mo content≤0.30wt%, Cu content≤0.20wt%; Described welding rod comprises heart yearn and is coated in the coating on heart yearn, and heart yearn is the steel wire with following chemical composition: C content≤0.09wt%, Si content≤0.03wt%, Mn content 0.35-0.55wt%, P content≤0.020wt%, S content≤0.020wt%, Ni content≤0.30wt%, Cr content≤0.20wt%, Cu content≤0.020wt%.
2. nuclear power 20 according to claim 1 controls chromium steel welding rod special for special, it is characterized in that: the formula of described coating is as follows: carbonate 20-55wt%, fluoride 10-30wt%, silicate 5-20wt%, ferroalloy 10-30wt%, arc stabilizer 5-10wt%, binding agent 1-5wt%.
3. nuclear power 20 according to claim 1 controls chromium steel welding rod special for special, it is characterized in that: described welding rod deposited metal comprises following element: C content 0.078wt%, Si content 0.45wt%, Mn content 0.98wt%, P content 0.019wt%, S content 0.012wt%, Ni content 0.073wt%, Cr content 0.29wt%, Cu content 0.033wt%, V content 0.008wt%, Al content 0.001wt%, Mo content are no more than 0.30wt%.
4. nuclear power 20 according to claim 1 controls chromium steel welding rod special for special, it is characterized in that: described welding rod deposited metal comprises following element: C content 0.067wt%, Si content 0.52wt%, Mn content 1.18wt%, P content 0.018wt%, S content 0.016wt%, Ni content 0.011wt%, Cr content 0.26wt%, Cu content 0.026wt%, V content 0.008wt%, Al content 0.001wt%, Mo content are no more than 0.30wt%.
5. nuclear power 20 according to claim 1 controls chromium steel welding rod special for special, it is characterized in that: described welding rod deposited metal comprises following element: C content 0.049wt%, Si content 0.50wt%, Mn content 1.14wt%, P content 0.018wt%, S content 0.014wt%, Ni content 0.011wt%, Cr content 0.26wt%, Cu content 0.025wt%, V content 0.008wt%, Al content 0.002wt%, Mo content are no more than 0.30wt%.
6. nuclear power 20 according to claim 1 controls chromium steel welding rod special for special, it is characterized in that: the specification of described welding rod is Φ 2.6mm, Φ 3.2mm or Φ 4.0mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103722306B (en) * | 2013-12-12 | 2015-10-28 | 四川大西洋焊接材料股份有限公司 | A kind of non-strong irradiated site low-alloy steel electrode of core level and manufacture method thereof |
| CN105108373B (en) * | 2015-06-09 | 2017-12-29 | 中广核工程有限公司 | Nuclear power station main steam line Site Welding welding rod special for special |
| CN105618956B (en) * | 2016-03-09 | 2018-06-29 | 苏州新普新材料科技有限公司 | A kind of nuclear power 20 controls the production method of chromium steel welding rod special for special |
| CN105583549B (en) * | 2016-03-09 | 2018-09-07 | 苏州新普新材料科技有限公司 | A kind of control of nuclear power 20 chromium steel welding rod special for special |
| CN105665969B (en) * | 2016-04-26 | 2018-06-01 | 惠安科培工业设计有限公司 | A kind of production method of corrosion-resisting steel welding welding rod special for special |
| CN105665962B (en) * | 2016-04-26 | 2018-06-29 | 泉州市名典工业设计有限公司 | A kind of corrosion-resisting steel welds welding rod special for special |
| CN107322193A (en) * | 2017-08-30 | 2017-11-07 | 苏州新普新材料科技有限公司 | A kind of preparation method of welding rod |
| CN108436325A (en) * | 2018-03-21 | 2018-08-24 | 济南市热力工程公司 | A kind of low dirt low-hydrogen welding rod and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885120A (en) * | 1973-07-03 | 1975-05-20 | Us Army | Electrode and flux combination for submerged arc welding |
| US4273838A (en) * | 1976-03-08 | 1981-06-16 | Combustion Engineering, Inc. | Weld metal resistant to neutron-bombardment embrittlement |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722895A (en) * | 1980-07-14 | 1982-02-05 | Nippon Kokan Kk <Nkk> | Method for forming high strength and high toughness welding metal |
| JP2002336989A (en) * | 2001-05-16 | 2002-11-26 | Sumikin Welding Ind Ltd | Welding material for seashore weather resistant steel |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885120A (en) * | 1973-07-03 | 1975-05-20 | Us Army | Electrode and flux combination for submerged arc welding |
| US4273838A (en) * | 1976-03-08 | 1981-06-16 | Combustion Engineering, Inc. | Weld metal resistant to neutron-bombardment embrittlement |
| CN102658442A (en) * | 2012-05-08 | 2012-09-12 | 上海电力修造总厂有限公司 | Low-alloy steel covered arc welding electrode with Cr control capacity and FAC resisting capacity of weld metal of basic slag system |
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