CN1156078A - Cast iron welding rod chemical coating composition - Google Patents
Cast iron welding rod chemical coating composition Download PDFInfo
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- CN1156078A CN1156078A CN 96101839 CN96101839A CN1156078A CN 1156078 A CN1156078 A CN 1156078A CN 96101839 CN96101839 CN 96101839 CN 96101839 A CN96101839 A CN 96101839A CN 1156078 A CN1156078 A CN 1156078A
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- cast iron
- coating composition
- electrode
- coating
- welding rod
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Abstract
An electrode-chemical coating composition for welding gray cast iron, cast steel and modular cast iron, as well as different kinds of steel features use of ordinary low-C steel as core and Ni as characteristic component of coating. Its advantages include low cost, high welding efficiency and not dropping coating off easily.
Description
The present invention relates to a kind of is the electrode for cast iron coating composition of core wire with the ordinary low-carbon steel.
In cold welding of cast iron, generally adopt the strong graphitization coating of nickel core electrode for cast iron both at home and abroad, this welding rod is core wire with the metallic nickel, is coating with strong graphitization component, and preface is costing an arm and a leg, the welding cost height, especially coating be strong graphitization component very easily the moisture absorption, fall piece, the second half section coating ftractures, comes off, so that can't weld, cause bigger waste, bad to mother metal fusion performance during welding, and is special in ironcasting outmoded, greasy dirt, problems such as easy undercut of soldering place and generation pore
The objective of the invention is at the prior art above shortcomings, the metatitanic acid type coating composition that a kind of suitable ordinary low-carbon steel is provided is core wire to reduce the welding rod cost, to improve welding efficiency and quality, enlarges the scope of application.
During coating of the present invention is formed, nickel is the high-ductility material, can swash heat, acute cold, but cast iron is had lubricant nature preferably, can restrain carbon transition in weld metal, itself carbon had very big solubility, do not generate carbide with carbon, prevented cast iron heat affected area air chill, the hardness of therefore molten attached metal is low, be easy to machining, cracking resistance is good.Its addition should strictly be controlled, otherwise the coating fusing point is low, occurs pressing the arc phenomenon in the welding process, and core wire exposes outside the coating sleeve, makes the moulding variation, the increase of splashing, electric arc instability.Rutile, titanium dioxide, ilmenite and reduced ilmenite all contain titanium dioxide, contain various ferriferous oxides in the magnetic iron ore, they be used the effects such as flowability that can play stable arc, slag making, balance slag viscosity, improve slag, titanium dioxide also mainly plays increases medicinal powder viscosity, improves the effect of extrusion performance.Mica can increase plasticity, elasticity and the lubricity of medicinal powder, help the processing of welding rod, and prevent that electrode coating from ftractureing at drying course, manganese metal can become manganese sulfide with the sulfuration symphysis, alleviate the illeffects of sulphur, prevent that fire check from appearring in weld seam, but its consumption should suit, otherwise easily cause the power of blowing excessive, the molten bath is dark excessively, generation pond crackle.
According to the present invention, this electrode for cast iron coating composition is by following each component (percentage by weight):
Rutile 2-18% marble 1-20% mica 2-16%
Titanium dioxide 3-15% ilmenite 2-20% magnetic iron ore 1-24%
The nickel of reduced ilmenite 3-30% manganese 5-15% and feature component 48-80% and the pulverulent mixture formed.
In the coating composition of the present invention, can determine that also the preferred content (percentage by weight) of feature component nickel is: 55-70%.
The present composition is pressed the formula rate mixed preparing, after dried the stirring, add an amount of potassium silicate aqueous solution, the wet stirring of row made coating again, is applied on the common low charcoal steel core with existing technology, cures 1-2 hour through 220 ± 10 ℃, promptly makes electrode for cast iron.
Adopt coating composition of the present invention to compare with existing electrode for cast iron, have the following advantages according to the electrode for cast iron that conventional welding rod production technology makes:
1, reduces the welding rod cost, save the nickel metals resources;
2, welding efficiency height, coating does not come off, and is insensitive to greasy dirt;
3, molten attached metal hardness is low, is easy to machining, and crack resistance is good;
4, of many uses, be applicable to the welding of important grey cast-iron, cast steel, spheroidal graphite cast-iron, also can be used for the connection weldering of dissimilar steel.
The following examples have described the present invention in detail.Percentage among the embodiment all by weight percentage.
Embodiment 1, electrode for cast iron coating composition is in following component and ratio mixed preparing: nickel 50% rutile 2% titanium dioxide 5% ilmenite 9% reduced ilmenite 4% magnetic iron ore 3% marble 10% mica 7% manganese 10% embodiment 2, electrode for cast iron coating composition is in following component and ratio mixed preparing: nickel 77% rutile 3% titanium dioxide 3% ilmenite 3% reduced ilmenite 4% magnetic iron ore 1% marble 2% mica 2% manganese 5% embodiment 3, electrode for cast iron coating composition mixes to join in following component and ratio and cuts: nickel 58% rutile 6% titanium dioxide 8% ilmenite 6% reduced ilmenite 3% magnetic iron ore 5% marble 4% mica 3% manganese 7% embodiment 4, electrode for cast iron coating composition is in following component and ratio mixed preparing: nickel 70% rutile 4% titanium dioxide 4% ilmenite 4% reduced ilmenite 5% magnetic iron ore 4% marble 1% mica 2% manganese 6%.
Claims (2)
1, a kind of is the electrode for cast iron coating composition of core wire with the ordinary low-carbon steel, is by (percentage by weight):
Rutile 2-18% marble 1-20% mica 2-16%
Titanium dioxide 3-15% ilmenite 2-20% magnetic iron ore 1-24%
This feature component of the nickel of reduced ilmenite 3-30% manganese 5-15% each component and 48-80% and the pulverulent mixture formed.
2, by the described electrode for cast iron coating of claim 1 composition, it is characterized in that the preferred content (percentage by weight) of component nickel is: 55-70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96101839A CN1050082C (en) | 1996-01-29 | 1996-01-29 | Cast iron welding rod chemical coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96101839A CN1050082C (en) | 1996-01-29 | 1996-01-29 | Cast iron welding rod chemical coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1156078A true CN1156078A (en) | 1997-08-06 |
| CN1050082C CN1050082C (en) | 2000-03-08 |
Family
ID=5117296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96101839A Expired - Fee Related CN1050082C (en) | 1996-01-29 | 1996-01-29 | Cast iron welding rod chemical coating composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050082C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862923A (en) * | 2010-06-18 | 2010-10-20 | 沈阳工业大学 | Teaching experiment welding electrode capable of reflecting defects of vent hole in welding line and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03297597A (en) * | 1990-04-17 | 1991-12-27 | Nippon Steel Weld Prod & Eng Co Ltd | Flux cored wire electrode with ni core wire inserted for welding cast iron |
| CN1062490A (en) * | 1990-12-17 | 1992-07-08 | 大连亚光特种电焊条有限公司 | Special cast iron electric welding rod |
-
1996
- 1996-01-29 CN CN96101839A patent/CN1050082C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862923A (en) * | 2010-06-18 | 2010-10-20 | 沈阳工业大学 | Teaching experiment welding electrode capable of reflecting defects of vent hole in welding line and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050082C (en) | 2000-03-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |