CN1270866C - Flux special for pressure electroslag welding of reinforced steed bar - Google Patents
Flux special for pressure electroslag welding of reinforced steed bar Download PDFInfo
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- CN1270866C CN1270866C CN 200410022890 CN200410022890A CN1270866C CN 1270866 C CN1270866 C CN 1270866C CN 200410022890 CN200410022890 CN 200410022890 CN 200410022890 A CN200410022890 A CN 200410022890A CN 1270866 C CN1270866 C CN 1270866C
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- welding
- flux
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- steel bar
- bar
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Abstract
The present invention belongs to special welding flux for pressure electroslag welding of a reinforced steel bar. The present invention solves the problems that the arc starting is difficult, the welding technological properties are difficult to guarantee, a reinforced steel bar of III class is welded with difficulty, etc. existing in the existing HJ431 welding flux. The present invention has the advantages that when the present invention is used for welding a reinforced steel bar, the arc starting is easy, electric arc and electroslag processes are stable, mechanical properties of a welded joint are good, etc. The welding flux comprises the following constituents according to weight percentage: 20 to 24.5% of MnO, 35 to 40% of SiO2, 5 to 10% of CaF2, 5 to 9% of MgO, 5 to 8% of CaO, 9 to 13% of Al2O3, 3 to 4.9% of TiO2 and 0 to 3.5% of FeO.
Description
(1) technical field:
The present invention relates to a kind of steel bar flux press welding special flux.
(2) background technology:
At present, domestic general employing HJ431 solder flux has starting the arc difficulty as the solder flux of steel bar flux press welding during welding, and arc stability is poor, and electroslag process instability is used for the welding of III grade reinforcing steel than shortcomings such as difficulties.Chinese patent discloses a kind of smelting special flux for reinforcing bar pressure slag welding No. 94115069.0, fluorine type solder flux in the manganese in the genus, but required manganese raw material grade was higher in should filling a prescription, fluorine and titanium proportion are higher, be unfavorable for the development and use of low-grade manganese resource and the reduction of product cost, during welding in the arc process voltage adjusting range narrow, easily blow-out, welding quality is difficult to guarantee.
(3) summary of the invention:
The present invention aim to provide a kind of welding technological properties and welding joint mechanical property good, easy construction, cost is low, and applicable to the low fluorine shaped steel muscle electroslag pressure welding special flux of silicon in the middle manganese of the welding of III grade reinforcing steel.
The percentage by weight of solder flux composition of the present invention is: MnO20～24.5%, SiO
235～40%, CaF25～10%, MgO5～9%, CaO5～8%, Al
2O
39～13%, TiO
23～4.9%, FeO＜3.5%.
The present invention has following obvious advantage: 1, the starting the arc of when welding is easy, can utilize the starting the arc of reinforcing bar own, does not need the striking ball; 2, arc process and electroslag process stabilization, the voltage adjusting range is wide, in the arc process voltage adjusting range wide be 35-45V; 3, cinder ladle forming, it is easy to take off slag, raps all to come off, weldering bag is of moderate size, bag just, slick and sly, bright, defectives such as no adhesion, undercut, pore; 4, be easy to construction, can use the small-power welding machine to weld larger-diameter reinforcing bar; 5, the mechanical property of welding point is good, meets national standard.In addition, the low fluorine slag system of silicon in the manganese in the invention belongs to, MnO content is lower than 25% in the solder flux composition of the present invention, can make full use of low-grade manganese resource, and institute adds TiO
2Content is lower, can play and improve the properties of product effect, is unlikely to increase product cost again.
(4) specific embodiment:
Embodiment 1:MnO 24.09%, SiO
237.64%, CaF
28.05%, MgO 6.68%, and CaO 5.34%, Al
2O
310.36%, TiO
24.73%, FeO 3.11%;
Embodiment 2:MnO 20.76%, SiO
238.29%, CaF
27.53%, MgO 7.81%, and CaO 6.86%, Al
2O
310.99%, TiO
24.41%, FeO 3.25%;
Embodiment 3:MnO 21.88%, SiO
238.74%, CaF
29.80%, MgO 7.51%, and CaO 5.72%, Al
2O
39.38%, TiO
24.04%, FeO 2.93%.
Use this solder flux, with BX-600 type welding machine, the reinforcing bar of welding φ 14-φ 32mm, standard shown in the according to the form below is carried out electroslag pressure welding and is connect.
| Bar diameter (mm) | Welding current (A) | Weldingvoltage (V) | Weld time (S) | ||
| Arc process | The electroslag process | Arc process | The electroslag process | ||
| φ14 | 200-220 | 35-45 | 22-27 | 12 | 3 |
| φ18 | 250-300 | 15 | 5 | ||
| φ20 | 300-350 | 17 | 5 | ||
| φ25 | 400-450 | 21 | 6 | ||
| φ28 | 500-550 | 24 | 6 | ||
| φ32 | 500-550 | 28 | 8 | ||
When carrying out the steel bar flux press welding welding by afore mentioned rules, the welding point moulding is good, and processing performance and tension test meet the requirement of JGJ18-2003 and DB43/T153 fully, are the desirable welding materials of steel bar flux press welding.
Claims (1)
1, a kind of steel bar flux press welding special flux is characterized in that, the percentage by weight of this solder flux composition is: MnO 20～24.5%, SiO
235～40%, CaF
25～10%, MgO 5～9%, and CaO 5～8%, Al
2O
39～13%, TiO
23～4.9%, FeO＜3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022890 CN1270866C (en) | 2004-02-08 | 2004-02-08 | Flux special for pressure electroslag welding of reinforced steed bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410022890 CN1270866C (en) | 2004-02-08 | 2004-02-08 | Flux special for pressure electroslag welding of reinforced steed bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559746A CN1559746A (en) | 2005-01-05 |
| CN1270866C true CN1270866C (en) | 2006-08-23 |
Family
ID=34440995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410022890 Expired - Fee Related CN1270866C (en) | 2004-02-08 | 2004-02-08 | Flux special for pressure electroslag welding of reinforced steed bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270866C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8624163B2 (en) * | 2005-06-01 | 2014-01-07 | Lincoln Global, Inc. | Modified flux system |
| CN101434018B (en) * | 2008-11-13 | 2011-02-09 | 永州市兴发电熔科技有限公司 | Middle-manganese high-silicon low-fluorine smelting type welding flux |
| CN106271215A (en) * | 2015-06-10 | 2017-01-04 | 江嗣水 | A kind of submerged arc welding flux material |
| CN108356442A (en) * | 2018-02-12 | 2018-08-03 | 永州市产商品质量监督检验所 | A kind of high manganese high-silicon low-fluorine smelting type welding flux of submerged-arc welding and its preparation method and application |
-
2004
- 2004-02-08 CN CN 200410022890 patent/CN1270866C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1559746A (en) | 2005-01-05 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |