CN1060987A - A kind of novel electrode for cast iron - Google Patents
A kind of novel electrode for cast iron Download PDFInfo
- Publication number
- CN1060987A CN1060987A CN 90110246 CN90110246A CN1060987A CN 1060987 A CN1060987 A CN 1060987A CN 90110246 CN90110246 CN 90110246 CN 90110246 A CN90110246 A CN 90110246A CN 1060987 A CN1060987 A CN 1060987A
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- additive
- iron
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- coating
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Abstract
The present invention makes base material to tie 426 welding rods, in electrode coating, increased a kind of additive, the composition of additive (quality %) is, Re (rare earth) 10-15, Ba (barium) 4-6, Si (silicon) 40-80, Al (aluminium) 0.5-3, Ca (calcium) 0.5-1, and all the other compositions are iron.The present invention can improve the seam organization crystalline condition, has eliminated defectives such as spoken parts in traditional operas, crackle, has guaranteed weld strength; Have wide range of applications: be applicable to the welding of grey cast-iron, spheroidal graphite cast-iron, white cast-iron, malleable cast iron; Have characteristics such as cost is low, preparation technology is simple.
Description
The invention belongs to field of welding material, particularly relate to the welding rod of welding cast iron.
Though existing electrode for cast iron kind is many, because the solderability and the crack resistance of cast iron are poor, two problems appear in regular meeting in the welding: the one, and the weld seam fusion is bad, easily sealing-off; The 2nd, weld bond easily forms the white structure that is difficult to machining, very easily cracking.In order to solve above-mentioned difficulties, the one, be before weldering and postwelding heat-treat.As use casting 100, casting 208, casting 238, casting 607 etc., all adopt this method.The 2nd, adopting precious metal material such as nickel-base alloy is the welding rod base material component, as cast 308, casting 408, casting 508, casting 612, casting 117 etc.Owing to the influence of above-mentioned factor, restricted the scope of application of most of electrode for cast irons.Patent Office of the People's Republic of China on October 12nd, 88, a kind of welding agent was introduced in disclosed " welding agent and be used for the restorative procedure of ironcasting " application for a patent for invention (application number 87102464A).Though this welding agent is used for the more existing electrode for cast iron of cast iron welding certain superiority is arranged, but still have the following disadvantages: 1, still have the nickel metal in the welding agent component, influence the reduction of cost; 2, owing to must adopt CO
2Gas shielded arc welding, appointed condition is limited, and some do not have the place of this equipment and can't weld; 3, the welding agent preparation process is complicated.
The objective of the invention is to overcome the deficiency of existing electrode for cast iron, make the new type cast iron welding rod that a kind of cost is low, preparation technology is simple, the scope of application is wide.
The object of the present invention is achieved like this.Welding rod core adopts and makes the composition at weld seam middle part is the low-carbon steel core of plasticity, is beneficial to eliminate welding stress, avoids cracking; Electrode coating is selected Well-recovered mixture for use, prevents from not fuse because of the molten bath oxidation makes weld seam, to guarantee weld strength.The welding rod base material is identical substantially with knot 426 welding rods.Key is to have increased a kind of additive in electrode coating.Each component ratio of additive (quality %) is: Re10-15, Ba4-6, Si40-80, Al0.5-3, Ca0.5-1, other composition are Fe, and each composition evenly mixes, and bonding agent is a waterglass.
The present invention has following advantage:
1, improved each knot of tissue crystalline region situation of weld seam:
A. at eutectic area,, make Jie's stability series turn to stability series, eliminate Fe because of the nucleation of additive
3C, carbon is separated out with the graphite state;
B. in the hypoeutectic district, the additive of disperse, itself becomes separating/enriching, produces " temperature ", " composition fluctuations " effect, not only promotes stability series to change, and also can make Fe in the ledeburite because of the non-homogeneous nucleation effect
3C
HBecome point-like;
C. cross altogether and roll in the tissue, the non-homogeneous nucleation of additive not only can reduce Fe
3C
HQuantity, and make its form become that arc is upright, mutual disjunct lumps Fe
3C
H
2, because white structure has been eliminated in additive effect of the present invention, reduced weld hardness, made weld seam can be easy to carry out machined.
3, cost of the present invention is low, preparation technology is simple, the scope of application is extensive, can be used for the welding of grey cast-iron, spheroidal graphite cast-iron, white cast-iron, malleable cast iron.
Embodiments of the invention are as follows:
The core wire composition is the H08 low-carbon steel core.
Electrode coating component ratio (quality %) is: marble 40-50, titanium dioxide 1-3, fluorite 15-20, quartzy 3-8, ferrotianium 4-8, mid-carbon fe-mn 4-6, carclazyte 4-6, soda ash 0.5-0.6.Above core wire and compositions of surfacing metal knot 426 welding rods of making peace greatly are identical.
The composition of additive (quality %) is: the Re(rare earth) 10-15, Ba(barium) 4-6, Si(silicon) 40-80, Al(aluminium) 0.5-3, Ca(calcium) 0.5-1, all the other compositions are Fe(iron).The binding agent of electrode coating and additive is a waterglass.The present invention adds outside binding agent and the core wire extrusion modling except coating and additive are evenly mixed; Can also be with additive with after waterglass evenly mix, directly coating or extrusion modling on knot 426 welding rods.In addition, additive can also be applied on the weldment groove, directly with the welding of knot 426 welding rods.
Claims (1)
1, a kind of novel electrode for cast iron, the core wire composition is H
08Low-carbon steel core, electrode coating component ratio (quality %) is: marble 40-50, titanium dioxide 1-3, fluorite 15-20, quartzy 3-8, ferrotianium 4-8, mid-carbon fe-mn 4-6, carclazyte 4-6, soda ash 0.5-0.6, core wire and compositions of surfacing metal and knot 426 welding rods are roughly the same, it is characterized in that in coating, having increased a kind of additive, each component ratio of additive (quality %) is: Re (rare earth) 10-15, Ba (barium) 4-6, Si (silicon) 40-80, Al (aluminium) 0.5-3, Ca (calcium) 0.5-1, other composition is Fe (iron), the binding agent of coating and additive is a waterglass, on welding rod is made, promptly can be that additive evenly mixes with compositions of surfacing metal, add binding agent and core wire extrusion modling, also can be with additive with after water waterglass evenly mix, directly coating or extrusion modling on knot 426 welding rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90110246 CN1060987A (en) | 1990-12-27 | 1990-12-27 | A kind of novel electrode for cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90110246 CN1060987A (en) | 1990-12-27 | 1990-12-27 | A kind of novel electrode for cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1060987A true CN1060987A (en) | 1992-05-13 |
Family
ID=4881830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90110246 Pending CN1060987A (en) | 1990-12-27 | 1990-12-27 | A kind of novel electrode for cast iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060987A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386174C (en) * | 2006-04-12 | 2008-05-07 | 西华大学 | Bainite welding rod dedicated for repairing rail and assembled frog |
| CN103008923A (en) * | 2012-12-21 | 2013-04-03 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
-
1990
- 1990-12-27 CN CN 90110246 patent/CN1060987A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386174C (en) * | 2006-04-12 | 2008-05-07 | 西华大学 | Bainite welding rod dedicated for repairing rail and assembled frog |
| CN103008923A (en) * | 2012-12-21 | 2013-04-03 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
| CN103008923B (en) * | 2012-12-21 | 2015-06-24 | 西安理工大学 | Low-hydrogen basic welding rod for welding 1Ni9 steel and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |