CN102009280B - Teaching experiment welding electrode capable of showing cracking defect in weld joint and preparation method of welding electrode - Google Patents
Teaching experiment welding electrode capable of showing cracking defect in weld joint and preparation method of welding electrode Download PDFInfo
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- CN102009280B CN102009280B CN2010105515735A CN201010551573A CN102009280B CN 102009280 B CN102009280 B CN 102009280B CN 2010105515735 A CN2010105515735 A CN 2010105515735A CN 201010551573 A CN201010551573 A CN 201010551573A CN 102009280 B CN102009280 B CN 102009280B
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Abstract
The invention provides a teaching experiment welding electrode capable of showing a cracking defect in a weld joint and a preparation method of the welding electrode. The welding electrode is characterized in that the electrode covering comprises the following components in percentage by mass: 15 to 25 percent of rutile, 7 to 10 percent of titanium dioxide, 10 to 15 percent of feldspar, 10 to 15 percent of hematite, 10 to 15 percent of marble, 3 to 5 percent of ferric sulfide, 10 to 15 percent of ferrotitanium, 1 to 2 percent of nickel powder, and the balance of manganese ore. The welding electrode has a cracking defect in the weld joint during the welding process under a normal weld condition so as to achieve the aim of experimental teaching. The formula can be used for manufacturing the welding electrode by a machine or by hands, and the welding electrode is characterized by adding the ferric sulfide and the nickel powder in the electrode covering.
Description
Technical field:The present invention relates to a kind of education experiment welding rod and preparation method thereof, particularly a kind of being applicable in the specialty welding experiments such as forming materials specialty and metal material can be embodied education experiment welding rod that goes out crack defect in the weld seam and preparation method thereof.
Background technology:Welding rod is usually used in two steel product and connects use, and physicochemical change takes place in fusion process welding rod, and fusing back weld metal and each item index are approaching.The welding rod quality is determined by welding rod coating recipe and core wire material.
In education experiment, need let the student see the crack defect that produces by the welding rod reason, and welding rod is the GB welding rod at present; During normal welding is difficult to weld out crackle; Even weld out crackle, also be the crack defect that produces by reasons such as welding parameter, welding conditions, experiment effect is not good.
In order under During normal welding parameter, welding condition, to be easy to occur crack defect in the weld seam, invented and to have embodied the education experiment welding rod that goes out crack defect in the weld seam.Occurring crack defect in the weld seam, is by due to the welding rod self reason fully, and each welding all crack defect can occur, and is easy to observe, and experiment effect is fine.
Summary of the invention:
Goal of the invention: the present invention provides a kind of education experiment welding rod of going out crack defect in the weld seam and preparation method thereof, special teaching purposes that also can be used for welding out crackle of embodying.
The present invention implements through following technical scheme:
Can embody the education experiment welding rod that goes out crack defect in the weld seam; It is characterized in that: the electrode coating composition is made up of rutile, titanium white powder, feldspar, bloodstone, marble, manganese ore, iron sulfide, ferrotianium, nickel powder; Wherein rutile account for gross mass 15% ~ 25%, titanium white powder account for gross mass 7% ~ 10%, feldspar account for gross mass 10% ~ 15%, bloodstone account for gross mass 10% ~ 15%, marble account for gross mass 10% ~ 15%, iron sulfide account for gross mass 3% ~ 5%, ferrotianium account for gross mass 10% ~ 15%, nickel powder accounts for 1% ~ 2% of gross mass, manganese ore accounts for all the other compositions of gross mass.
In the electrode coating composition, rutile 25%, titanium white powder 11%, feldspar 12%, bloodstone 10%, marble 15%, iron sulfide 3%, ferrotianium 15%, nickel powder 1%, manganese ore 8%.
Said chemical coating of welding electrode thickness is 1.5mm～2.0mm; The welding rod electrode size is φ 3mm～φ 3.2mm, and length is 250mm～300mm.
The welding rod afterbody scribbles the red marker ring that width is 5mm～8mm.
A kind of aforesaid preparation method who embodies the education experiment welding rod that goes out crack defect in the weld seam, it is characterized in that: said preparation method's concrete steps are following:
1., the preparation core wire is subsequent use;
2., the component of electrode coating is weighed subsequent use respectively in the ratio of claim 1, gross weight is that 10kg～15kg is a unit;
3., coat welding rod with small-sized coating machine;
4., the discharging opening mould is selected φ 5.3mm for use;
5., oven dry;
6., brushing red marker ring.
Advantage and effect: the present invention provides a kind of education experiment welding rod that goes out crack defect in the weld seam that embodies, and it is characterized in that: the coating of said welding rod adds iron sulfide and nickel powder etc. and is beneficial to the material that cracks.
This welding rod advantage is to be beneficial to especially teaching, can in weld seam, produce the penetrability longitudinal crack under the During normal welding condition, produce the position and be positioned in the middle of the weld seam, and have along crystal boundary cracking obvious characteristic; The side weld limit cracks in welding process; Phenomenon is obvious, is convenient to understand, and teaching efficiency is better.
Description of drawings:
Fig. 1 is the structural representation of welding rod of the present invention;
Fig. 2 is the structural representation of crackle in the demonstration weld seam of the present invention;
Among the figure: 1 is core wire; 2 is marker loop; 3 is coating; 4 is horizontal mother metal; 5 is normal weld; 6 is vertical mother metal; 7 is crackle; 8 for the weld seam of crackle occurring.
The specific embodiment:
Specifically the present invention will be described below in conjunction with embodiment:
The present invention provides a kind of education experiment welding rod that goes out crack defect in the weld seam that embodies, and it is characterized in that: the coating of said welding rod is prepared from following component: rutile, titanium white powder, feldspar, bloodstone, marble, manganese ore, iron sulfide, ferrotianium, nickel powder; Rutile wherein account for gross mass 15% ~ 25%, titanium white powder account for gross mass 7% ~ 10%, feldspar account for gross mass 10% ~ 15%, bloodstone account for gross mass 10% ~ 15%, marble account for gross mass 10% ~ 15%, iron sulfide account for gross mass 3% ~ 5%, ferrotianium account for gross mass 10% ~ 15%, nickel powder accounts for 1% ~ 2% of gross mass, manganese ore accounts for all the other compositions of gross mass.
Said chemical coating of welding electrode thickness is 1.5mm～2.0mm; The welding rod electrode size is φ 3mm～φ 3.2mm, and length is 250mm～300mm.
Embodiment 1:
1., the preparation core wire is subsequent use;
2., the component of electrode coating is pressed: rutile 25%, titanium white powder 10%, feldspar 12%, bloodstone 10%, marble 15%, iron sulfide 3%, ferrotianium 15%, nickel powder 1%; The ratio of manganese ore 9% is weighed with electronic scale or balance respectively, and gross weight is that 10kg～15kg is a unit;
3., coat welding rod with small-sized coating machine.
4., the discharging opening mould is selected φ 5.3mm for use.
5., oven dry.
6., brushing red marker ring.
Embodiment 1 is a most preferred embodiment, selects for use other ratios in the above-mentioned chemical coating of welding electrode compositional range also can realize the object of the invention, and just the weld seam of most preferred embodiment generation crackle more can clearly show along the obvious characteristic of crystal boundary cracking, is convenient to teaching.
Embodiment 2:
In the experiment, as shown in Figure 2, vertically to place with 2 mother metals, the welding back forms angle welding.Wherein a side adopts the GB welding rod, and During normal welding forms normal weld, flawless; Opposite side adopts welding rod of the present invention, During normal welding, and formation contains the crackle weld seam, and naked eyes promptly can be observed, and adopt magnetic powder inspection, and crackle more is prone to observe.
This is invented when in use, available direct current-direct current (AC-DC) welding welding, and the welding current of 120A, choosing the steel plate specification is the low alloy steel plate material of 300*100*12mm, carries out the angle welding experiment then.As shown in Figure 2, the present invention is rationally effective, effect is obvious, is suitable for using in the experimental teaching field of specialties such as forming materials specialty and metal material.
Claims (5)
1. can embody the education experiment welding rod that goes out crack defect in the weld seam; It is characterized in that: the electrode coating composition is made up of rutile, titanium white powder, feldspar, bloodstone, marble, manganese ore, iron sulfide, ferrotianium, nickel powder; Wherein rutile account for gross mass 15% ~ 25%, titanium white powder account for gross mass 7% ~ 10%, feldspar account for gross mass 10% ~ 15%, bloodstone account for gross mass 10% ~ 15%, marble account for gross mass 10% ~ 15%, iron sulfide account for gross mass 3% ~ 5%, ferrotianium account for gross mass 10% ~ 15%, nickel powder accounts for 1% ~ 2% of gross mass, manganese ore accounts for all the other compositions of gross mass.
2. the education experiment welding rod that goes out crack defect in the weld seam that embodies according to claim 1; It is characterized in that: in the electrode coating composition; Rutile 25%, titanium white powder 10%, feldspar 12%, bloodstone 10%, marble 15%, iron sulfide 3%, ferrotianium 15%, nickel powder 1%, manganese ore 9%.
3. the education experiment welding rod that goes out crack defect in the weld seam that embodies according to claim 1, it is characterized in that: said chemical coating of welding electrode thickness is 1.5mm～2.0mm; The welding rod electrode size is φ 3mm～φ 3.2mm, and length is 250mm～300mm.
4. the education experiment welding rod that goes out crack defect in the weld seam that embodies according to claim 1 is characterized in that: the welding rod afterbody scribbles the red marker ring that width is 5mm～8mm.
5. the preparation method of an education experiment welding rod that embodies to go out crack defect in the weld seam as claimed in claim 1, it is characterized in that: said preparation method's concrete steps are following:
1., the preparation core wire is subsequent use;
2., the component of electrode coating is weighed subsequent use respectively in the ratio of claim 1, gross weight is that 10kg～15kg is a unit;
3., coat welding rod with small-sized coating machine;
4., the discharging opening mould is selected φ 5.3mm for use;
5., oven dry;
6., brushing red marker ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105515735A CN102009280B (en) | 2010-11-21 | 2010-11-21 | Teaching experiment welding electrode capable of showing cracking defect in weld joint and preparation method of welding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105515735A CN102009280B (en) | 2010-11-21 | 2010-11-21 | Teaching experiment welding electrode capable of showing cracking defect in weld joint and preparation method of welding electrode |
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| Publication Number | Publication Date |
|---|---|
| CN102009280A CN102009280A (en) | 2011-04-13 |
| CN102009280B true CN102009280B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105515735A Expired - Fee Related CN102009280B (en) | 2010-11-21 | 2010-11-21 | Teaching experiment welding electrode capable of showing cracking defect in weld joint and preparation method of welding electrode |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105842034B (en) * | 2016-05-17 | 2018-08-21 | 山东电力建设第一工程公司 | A kind of production method of crack defect test specimen |
| CN113894464B (en) * | 2021-10-15 | 2023-04-21 | 江苏太平洋联合焊接材料有限公司 | Preparation method of hot-strength steel welding electrode and quality inspection tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097666A (en) * | 1994-05-24 | 1995-01-25 | 江代源 | Low dust carbon steel welding rod |
| CN1107771A (en) * | 1994-03-04 | 1995-09-06 | 赵志显 | Producing method for welding electrode capable of welding heterometals |
| RU2229368C2 (en) * | 2002-07-31 | 2004-05-27 | ФГУП "Бийский олеумный завод" | Electrode coating composition |
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57137097A (en) * | 1981-02-20 | 1982-08-24 | Kawasaki Steel Corp | Coating material for coated electrode for repairing of vertical down weld bead |
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2010
- 2010-11-21 CN CN2010105515735A patent/CN102009280B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107771A (en) * | 1994-03-04 | 1995-09-06 | 赵志显 | Producing method for welding electrode capable of welding heterometals |
| CN1097666A (en) * | 1994-05-24 | 1995-01-25 | 江代源 | Low dust carbon steel welding rod |
| RU2229368C2 (en) * | 2002-07-31 | 2004-05-27 | ФГУП "Бийский олеумный завод" | Electrode coating composition |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| JP昭57-137097A 1982.08.24 |
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Granted publication date: 20120704 Termination date: 20131121 |