CN104801849A - Welding method and fastening device of copper-clad steel wires - Google Patents
Welding method and fastening device of copper-clad steel wires Download PDFInfo
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- CN104801849A CN104801849A CN201510251386.8A CN201510251386A CN104801849A CN 104801849 A CN104801849 A CN 104801849A CN 201510251386 A CN201510251386 A CN 201510251386A CN 104801849 A CN104801849 A CN 104801849A
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- copper covered
- covered steel
- grip block
- copper
- steel mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K23/00—Alumino-thermic welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a welding method and a fastening device of copper-clad steel wires. The welding method comprises the following steps: Step S1: first ends of a plurality of copper-clad steel wires are mounted in a copper-clad steel mould; Step S2: the positions of the copper-clad steel wires are adjusted, so that the first ends of the copper-clad steel wires are butted to each other; Step S3: a fastening device is used for reinforcing the copper-clad steel mould, so that the copper-clad steel wires are fixed in the copper-clad steel mould; Step S4: a welding tool is used for welding the first ends of the copper-clad steel wires through an exothermic welding cavity in the copper-clad steel mould; Step S5: the fastening device, the copper-clad steel mould and the copper-clad steel wires are disassembled. According to the invention, after the copper-clad steel wires are placed in the copper-clad steel mould, the copper-clad steel mould and the copper-clad steel wires are fastened and positioned through the fastening device, so as to effectively avoid problems of clearance formed between the copper-clad steel wires and the copper-clad steel mould due to thermal deformation, welding fluid retention and fluid leakage during welding, effectively improve the welding quality of the copper-clad steel wires and ensure the processing efficiency.
Description
Technical field
The present invention relates to field of engineering technology, in particular to a kind of welding method and fastener of copper covered steel.
Background technology
When carrying out grounding construction, consider construction environment problem, such as, carry out grounding construction in moist, saline and alkaline, acid ground level under producing the particular surroundings such as chemical attack medium, use copper covered steel as earthing material more.
Copper covered steel grounding construction mainly adopts exothermic weld, exothermic weld is the residue being produced liquid high-temperature copper liquid and aluminium oxide by the chemical reaction (exothermic reaction) of aluminium and cupric oxide, and the high temperature utilizing exothermic reaction to produce is to realize the modern welding procedure of the electric welding of high-performance.This reaction is carried out in resistant to elevated temperatures copper covered steel mould (graphite jig), and exothermal reaction process only needs several seconds short times to complete.
It is professional that welding procedure due to copper covered steel has certain operation, and the dexterity of welding procedure and the operating accuracy of copper covered steel mould all can affect the welding effect of copper covered steel.
In prior art, when carrying out the soldering of copper covered steel, usually can there is the problem of poor welding quality, particularly after copper covered steel exothermic weld dismantles mould, usually occurring the phenomenon of leakage, cause occurring that unnecessary welding fluid cooling forms weld tabs.
Show after deliberation, several factors all can cause the phenomenon of leakage, and such as, the problems such as construction management factor, workmen's specialized capability, these are all controllable by managing.But because job site is with a varied topography, ground connection operating surface has depth requirements, and copper covered steel also exists the problems such as bending stress in laying, copper covered steel all can be caused in welding process to produce gap with copper covered steel mould, thus cause the problem of welding leakage.In addition, copper covered steel mould Reusability, is difficult to closely cooperate with copper covered steel after also causing copper covered steel die wear, thus makes the gap of the two larger, and then causes the phenomenon of leakage more serious.In order to ensure copper covered steel mold use reliability, need the copper covered steel mould frequently more renewed, thus cause production cost to improve, cause and produce waste.
Summary of the invention
Main purpose of the present invention is the welding method and the fastener that provide a kind of copper covered steel, to solve the problem easily causing the phenomenon of leakage in prior art in copper covered steel welding process.
To achieve these goals, according to an aspect of the present invention, provide a kind of welding method of copper covered steel, comprising: step S1: the inside first end of many copper covered steels being installed in copper covered steel mould; Step S2: the position adjusting many copper covered steels, makes the first end of many copper covered steels dock all each other; Step S3: adopt fastener to be reinforced by copper covered steel mould, be fixed in copper covered steel mould to make copper covered steel; Step S4: adopt soldering appliance by the molten chamber of heat release weldering on copper covered steel mould, the first end of many copper covered steels is welded to one another; Step S5: fastener, copper covered steel mould and copper covered steel are disassembled.
Further, copper covered steel mould comprises the Split mold that at least two splicings coordinate, copper covered steel be clamped in Split mold splice and combine after copper covered steel mould in, in step s3, fastener is adopted the colligation of copper covered steel mould to be fixed or grip to avoid repeatedly using rear multiple Split mold produce gap or separation each other or scatter.
Further, step S5 comprises: step S51: disassembled by copper covered steel mould by fastener, to make multiple Split mold separated from one another; Step S52: the copper covered steel after welding is good takes out by copper covered steel mould.
Further, fastener is steel wire, iron wire or side jag, in step s3, adopts steel wire, iron wire or side jag, by the colligation each other of multiple Split mold, reinforcing, to make copper covered steel mould by copper covered steel clamping position.
Further, fastener comprises the governor motion of the grasping part size of holder body and adjustment holder body, and step S3 comprises: step S31: outside holder body being set in copper covered steel mould; Step S32: control and regulation mechanism, to regulate the size of the grasping part of holder body and to adapt to the profile of copper covered steel mould, makes holder body be fixed to one another by multiple Split mold.
According to a further aspect in the invention, provide a kind of fastener, comprising: holder body, the grasping part size of holder body is adjustable; Governor motion, governor motion is arranged on holder body to adjust the size of the grasping part of holder body.
Further, holder body comprises: the first grip block; The second grip block be oppositely arranged with the first grip block, distance between first grip block and the second grip block is adjustable, and governor motion is all connected to regulate the distance between the first grip block and the second grip block and the size changing grasping part with the first grip block and the second grip block.
Further, governor motion comprises: adjusting screw(rod), and the first end of adjusting screw(rod) is connected with the first grip block, and the second end of adjusting screw(rod) passes the second grip block and is slidably connected with the second grip block; Adjusting nut, adjusting nut is threaded with the second end of adjusting screw(rod), and adjusting nut is positioned at the side away from the first grip block of the second grip block.
Further, the first end of adjusting screw(rod) is connected with the first grip block position-adjustable ground.
Further, governor motion is two, and the first side of the first grip block is connected with the first side of the second grip block by a governor motion, and the second side of the first grip block is connected with the second side of the second grip block by another governor motion.
Apply technical scheme of the present invention, step S1: the inside first end of many copper covered steels being installed in copper covered steel mould; Step S2: the position adjusting many copper covered steels, makes the first end of many copper covered steels dock all each other; Step S3: adopt fastener to be reinforced by copper covered steel mould, be fixed in copper covered steel mould to make copper covered steel; Step S4: adopt soldering appliance by the molten chamber of heat release weldering on copper covered steel mould, the first end of many copper covered steels is welded to one another; Step S5: fastener, copper covered steel mould and copper covered steel are disassembled.Owing to put into copper covered steel mould at copper covered steel after, adopt fastener by copper covered steel mould and the fastening location of copper covered steel, thus effectively avoid in welding process, copper covered steel produces gap, effectively avoids welding fluid to retain, avoids producing leakage problem because of temperature distortion and copper covered steel mould, thus effectively improve the welding quality of copper covered steel, ensure that working (machining) efficiency and the product qualified rate of copper covered steel, and reduce copper covered steel mould replacement frequency, reduce copper covered steel welding processing cost, avoid produce waste.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart of the welding method in the present invention;
Fig. 2 shows the installation relation schematic diagram of copper covered steel mould in the present invention, copper covered steel, fastener; And
Fig. 3 shows the structural representation of the fastener in the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, copper covered steel; 20, copper covered steel mould; 21, the molten chamber of heat release weldering; 22, Split mold; 30, fastener; 31, holder body; 32, grasping part; 33, governor motion; 34, the first grip block; 35, the second grip block; 36, adjusting screw(rod); 37, adjusting nut.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
In order to solve the problem easily causing the phenomenon of leakage in prior art in copper covered steel welding process, the invention provides a kind of welding method of copper covered steel.
As shown in Figure 1, welding method comprises step S1 to step S5, wherein, and step S1: the inside first end of many copper covered steels 10 being installed in copper covered steel mould 20; Step S2: the position adjusting many copper covered steels 10, makes the first end of many copper covered steels 10 dock all each other; Step S3: adopt fastener 30 to be reinforced by copper covered steel mould 20, be fixed in copper covered steel mould 20 to make copper covered steel 10; Step S4: adopt soldering appliance by the molten chamber 21 of heat release weldering on copper covered steel mould 20, the first end of many copper covered steels 10 is welded to one another; Step S5: fastener 30, copper covered steel mould 20 and copper covered steel 10 are disassembled.
Owing to put into copper covered steel mould 20 at copper covered steel 10 after, adopt fastener 30 by copper covered steel mould 20 and the fastening location of copper covered steel 10, thus effectively avoid in welding process, copper covered steel 10 produces gap, effectively avoids welding fluid to retain, avoids producing leakage problem because of temperature distortion and copper covered steel mould 20, thus effectively improve the welding quality of copper covered steel 10, ensure that working (machining) efficiency and the product qualified rate of copper covered steel 10, and reduce copper covered steel mould 20 replacement frequency, reduce copper covered steel 10 weld processing cost, avoid produce waste.
Put into copper covered steel mould 20 for the ease of copper covered steel 10, copper covered steel mould 20 comprise at least two splicing coordinate Split mold 22, copper covered steel 10 be clamped in Split mold 22 splice and combine after copper covered steel mould 20 in.
Preferably, in step s3, fastener 30 is adopted copper covered steel mould 20 colligation to be fixed or grip to avoid repeatedly using rear multiple Split mold 22 produce gap or separation each other or scatter.Because copper covered steel mould 20 colligation can be fixed or grip by fastener 30, thus reliably with copper covered steel 10 each other reliably locate each other by location, Split mold 22 for each Split mold 22, effectively avoid producing gap between copper covered steel 10 and copper covered steel mould 20, thus effectively avoid welding the phenomenon of leakage.
In one preferred embodiment, fastener 30 is steel wire, iron wire or side jag, in step s3, adopts steel wire, iron wire or side jag, by the colligation each other of multiple Split molds 22, reinforcing, to make copper covered steel mould 20 by copper covered steel 10 clamping position.When fastener 30 is steel wire, iron wire or side jag, fastener 30 have easy and simple to handle, dependability good, colligation firmly feature, effectively copper covered steel 10 and copper covered steel mould 20 can be fixed, and effectively avoid Split mold 22 loose.
In the preferred embodiment shown in Fig. 2 and Fig. 3, fastener 30 comprises the governor motion 33 of grasping part 32 size of holder body 31 and adjustment holder body 31, and step S3 comprises: step S31: outside holder body 31 being set in copper covered steel mould 20; Step S32: control and regulation mechanism 33, to regulate the size of the grasping part 32 of holder body 31 and to adapt to the profile of copper covered steel mould 20, makes holder body 31 be fixed to one another by multiple Split mold 22.Because fastener has holder body 31, thus by regulating the size of the grasping part 32 of holder body 31, holder body 31 can be made to adapt to volume and the profile of copper covered steel mould 20, thus ensure the fixing reliability of fastener 30 pairs of copper covered steel moulds 20 and copper covered steel 10.Because fastener 30 adopts the mode of clamping to be connected with copper covered steel mould 20, thus there is easy-disassembling-assembling feature, thus improve the operating reliability of fastener 30.
Preferably, step S5 comprises: step S51: disassembled by copper covered steel mould 20 by fastener 30, to make multiple Split mold 22 separated from one another; Step S52: the copper covered steel 10 after welding is good takes out by copper covered steel mould 20.By above-mentioned demounting procedure, copper covered steel 10 can be made to disassemble by copper covered steel mould 20 smoothly, and the welding quality of copper covered steel 10 can be ensured, ensure the enforcement reliability of welding method.
Present invention also offers a kind of fastener.As shown in Figures 2 and 3, fastener comprises holder body 31 and governor motion 33, and grasping part 32 size of holder body 31 is adjustable, and governor motion 33 is arranged on holder body 31 to adjust the size of the grasping part 32 of holder body 31.Owing to can be regulated the size of the grasping part 32 of holder body 31 by governor motion 33, thus make fastener can meet the instructions for use of the copper covered steel mould 20 of different model, fastener the is had scope of application is wide, dependability is good feature.
In the preferred embodiment shown in Fig. 2 and Fig. 3, the second grip block 35 that holder body 31 comprises the first grip block 34 and is oppositely arranged with the first grip block 34, distance between first grip block 34 and the second grip block 35 is adjustable, and governor motion 33 and the first grip block 34 and the second grip block 35 are all connected to regulate the distance between the first grip block 34 and the second grip block 35 and the size changing grasping part 32.By regulating distance between the first grip block 34 and the second grip block 35 to adapt to the profile of copper covered steel mould 20, thus Split mold 22 being closely cooperated each other, ensure that the clamping reliability of fastener 30 pairs of copper covered steel moulds 20.
Preferably, governor motion 33 comprises adjusting screw(rod) 36 and adjusting nut 37, and the first end of adjusting screw(rod) 36 is connected with the first grip block 34, and the second end of adjusting screw(rod) 36 passes the second grip block 35 and is slidably connected with the second grip block 35; Adjusting nut 37 is threaded with the second end of adjusting screw(rod) 36, and adjusting nut 37 is positioned at the side away from the first grip block 34 of the second grip block 35.Change the distance between the first grip block 34 and the second grip block 35 owing to adopting adjusting nut 37 and coordinating of adjusting screw(rod) 36, thus make holder body 31 have the advantages that to regulate good reliability, adjustment operation easy.
Further, the first end of adjusting screw(rod) 36 is connected with the first grip block 34 position-adjustable ground.Certainly, adjusting screw(rod) 36 can also have the function of bidirectional modulation with holder body 31, so not only can accelerate to regulate efficiency, also make governor motion 33 have the feature of good operability.
In the preferred embodiment shown in Fig. 2 and Fig. 3, governor motion 33 is two, first side of first side of the first grip block 34 with the second grip block 35 is connected by a governor motion 33, and second side of the second side of the first grip block 34 with the second grip block 35 is connected by another governor motion 33.In order to ensure the uniform force application of holder body 31 pairs of copper covered steel moulds 20, thus a governor motion 33 is respectively provided with in the both sides of holder body 31, the both sides stress balance of copper covered steel mould 20 can be made, ensure that the reliability of positioning of copper covered steel mould 20 and copper covered steel 10, thus further increase the soldering reliability of copper covered steel 10.
Preferably, the first grip block 34 and the second grip block 35 can adopt steel plate, angle steel or band steel manufacture to form.
Embodiment 1
At the scene in copper covered steel 10 grounding construction, copper covered steel mould 20 is carried out provisional fixing, or when quantities is very little, in order to avoid welding fluid is revealed, steel wire can be adopted to carry out colligation as fastener 30 pairs of copper covered steel moulds 20 and copper covered steel 10 and fix.Strapping can control the phenomenon of leakage that copper covered steel 10 welds to a certain extent, but colligation can not Reusability, reuses and the colligation dynamics of steel wire will be caused to reduce, cause fixed effect to weaken, and then will reduce the control effects to leakage.Therefore strapping only for provisional, ground connection pad is less, need to rectify and improve partial earthing or the one of the grounding construction of minor change supplement amount should acute method.
Embodiment 2
The fastener 30 that holder body 31 in the present invention and governor motion 33 form has certain intensity, lightweight, fixing on-deformable feature, is highly suitable for the ground connection project that ground connection welding engineering amount is large.Due to cost few, easy to use and solve very intuitively copper covered steel 10 weld solution reveal problem, be thus with a wide range of applications.
Embodiment 3
In copper covered steel 10 grounding construction, because the design form of earthing or grounding means is different, the employing mode just determining the copper covered steel mould 20 of copper covered steel 10 is different.The various ways such as such as earth connection is connected with drop bar, earth connection is connected with earth connection, ground connection main line is connected with ground connection branch line.Now, need to adopt the copper covered steel mould 20 of different size to carry out grounding construction.Certainly, jackscrew frame can also be adopted to be fixed copper covered steel 10 as cranse, to avoid welding leakage.
Welding method in the present invention have easy and simple to handle, dependability good, effectively can solve the problem of welding leakage, and copper covered steel mould 20 is had can recycle, use cost is low, the advantage such as not fragile.
Welding method in the present invention can be widely used in the construction industry of various copper covered steel ground connection.Simultaneously a fine addition product of copper covered steel material is promoted by Ye Shi producer, little cost can be utilized, be designed to meticulous, specification is many, be convenient to dismantle, the fastener 30 of secured adjusted.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a welding method for copper covered steel, is characterized in that, comprising:
Step S1: the inside first end of many copper covered steels (10) being installed in copper covered steel mould (20);
Step S2: the position adjusting many described copper covered steels (10), makes the first end of many described copper covered steels (10) dock all each other;
Step S3: adopt fastener (30) described copper covered steel mould (20) to be reinforced, be fixed in described copper covered steel mould (20) to make described copper covered steel (10);
Step S4: adopt soldering appliance by the molten chamber (21) of heat release weldering on described copper covered steel mould (20), the first end of many described copper covered steels (10) is welded to one another;
Step S5: described fastener (30), described copper covered steel mould (20) and described copper covered steel (10) are disassembled.
2. welding method according to claim 1, it is characterized in that, described copper covered steel mould (20) comprises the Split mold (22) that at least two splicings coordinate, described copper covered steel (10) be clamped in described Split mold (22) splice and combine after described copper covered steel mould (20) in, in described step S3, adopt described fastener (30) colligation of described copper covered steel mould (20) to be fixed or grip to avoid repeatedly using rear multiple described Split mold (22) produce gap or separation each other or scatter.
3. welding method according to claim 2, is characterized in that, described step S5 comprises:
Step S51: disassembled by described copper covered steel mould (20) by described fastener (30), to make multiple described Split mold (22) separated from one another;
Step S52: the described copper covered steel (10) after welding is good takes out by described copper covered steel mould (20).
4. welding method according to claim 2, it is characterized in that, described fastener (30) is steel wire, iron wire or side jag, in described step S3, adopt steel wire, iron wire or side jag, by the colligation each other of multiple described Split mold (22), reinforcing, to make described copper covered steel mould (20) by described copper covered steel (10) clamping position.
5. welding method according to claim 2, it is characterized in that, described fastener (30) comprises the governor motion (33) of grasping part (32) size of holder body (31) and the described holder body of adjustment (31), and described step S3 comprises:
Step S31: the outside described holder body (31) being set in described copper covered steel mould (20);
Step S32: control described governor motion (33) to regulate the size of the grasping part of described holder body (31) (32) and to adapt to the profile of described copper covered steel mould (20), multiple described Split mold (22) is fixed to one another by described holder body (31).
6. a fastener, is characterized in that, comprising:
Holder body (31), grasping part (32) size of described holder body (31) is adjustable;
Governor motion (33), described governor motion (33) is arranged on described holder body (31) to adjust the size of the described grasping part (32) of described holder body (31).
7. fastener according to claim 6, is characterized in that, described holder body (31) comprising:
First grip block (34);
The second grip block (35) be oppositely arranged with described first grip block (34), distance between described first grip block (34) and described second grip block (35) is adjustable, and described governor motion (33) and described first grip block (34) and described second grip block (35) are all connected to regulate the distance between described first grip block (34) and described second grip block (35) and the size changing described grasping part (32).
8. fastener according to claim 7, is characterized in that, described governor motion (33) comprising:
Adjusting screw(rod) (36), the first end of described adjusting screw(rod) (36) is connected with described first grip block (34), and the second end of described adjusting screw(rod) (36) passes described second grip block (35) and is slidably connected with described second grip block (35);
Adjusting nut (37), described adjusting nut (37) is threaded with the second end of described adjusting screw(rod) (36), and described adjusting nut (37) is positioned at the side away from described first grip block (34) of described second grip block (35).
9. fastener according to claim 8, is characterized in that, the first end of described adjusting screw(rod) (36) is connected with described first grip block (34) position-adjustable ground.
10. fastener according to claim 7, it is characterized in that, described governor motion (33) is two, first side of first side of described first grip block (34) with described second grip block (35) is connected by a described governor motion (33), and second side of the second side of described first grip block (34) with described second grip block (35) is connected by governor motion described in another (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251386.8A CN104801849A (en) | 2015-05-15 | 2015-05-15 | Welding method and fastening device of copper-clad steel wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251386.8A CN104801849A (en) | 2015-05-15 | 2015-05-15 | Welding method and fastening device of copper-clad steel wires |
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| CN104801849A true CN104801849A (en) | 2015-07-29 |
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|---|---|---|---|
| CN201510251386.8A Pending CN104801849A (en) | 2015-05-15 | 2015-05-15 | Welding method and fastening device of copper-clad steel wires |
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| CN103658561A (en) * | 2012-09-05 | 2014-03-26 | 戴辉 | Casting sand mold locking clamp |
| CN104057216A (en) * | 2014-05-12 | 2014-09-24 | 昆山福易雅自动化科技有限公司 | Novel heat emitting welding flux and welding method |
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|---|---|---|---|---|
| US4658886A (en) * | 1985-09-11 | 1987-04-21 | Graphite Sales, Inc. | High temperature molds and composition for same |
| US5954261A (en) * | 1996-04-18 | 1999-09-21 | Erico International Corporation | Welding mold and method |
| US6382496B1 (en) * | 2000-07-27 | 2002-05-07 | Harger, Inc. | Welding handle clamp |
| US7240717B2 (en) * | 2005-11-17 | 2007-07-10 | Continental Industries, Inc. | Multiple ignition source exothermic reaction mold device |
| CN200954577Y (en) * | 2006-10-21 | 2007-10-03 | 比亚迪股份有限公司 | Evaporator-welding clamp |
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| CN103658561A (en) * | 2012-09-05 | 2014-03-26 | 戴辉 | Casting sand mold locking clamp |
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