CN101143402A - Screw plunger welding composite connecting method for adhesive joint repair - Google Patents
Screw plunger welding composite connecting method for adhesive joint repair Download PDFInfo
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- CN101143402A CN101143402A CNA2007100479497A CN200710047949A CN101143402A CN 101143402 A CN101143402 A CN 101143402A CN A2007100479497 A CNA2007100479497 A CN A2007100479497A CN 200710047949 A CN200710047949 A CN 200710047949A CN 101143402 A CN101143402 A CN 101143402A
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Abstract
A compound attachment method of a double-screw bold plug welding used for repairing a stickiness joint belongs to the technology field of welding, which has procedures: the first procedure is that the surface of the stickiness joint is cleaned; the second procedure is that a hole is drilled on a steel plate after the cleaning treatment; the third procedure is the gripping head of a welding nail is used for holding the welding nail to make the welding nail go through the hold of an upper steel plate to closely touch a lower steel plate; the fourth procedure is that with the hole in the third procedure correctly positioned, the mode of a soldering machine is set to the welding mode of long period gas shield; the welding parameter of a double-screw bolt soldering machine is adjusted; and then the double-screw bolt soldering machine is electrified to form a cap melting bath; the fifth procedure is the with the completion of the fourth welding procedure, the welding nail is inserted into the melting bath; and a welded joint is formed till the temperature of room is cooled. The invention improves the bearing capacity of the joint. In addition, the method is easy, economic, efficient and easy to be realized.
Description
Technical field
What the present invention relates to is method in a kind of welding technology field, specifically is a kind of double-screw bolt plunger welding composite connecting method that cemented joint is repaired that is used for.
Background technology
The resistance spot welding process that generally adopts in the automobile making, the martensite that hardens that advanced high-strength steel material forms in the quick cooling procedure of resistance spot welding can increase tack-weld fragility, produce nugget interfacial fracture problem, reduce joint mechanical property and low-cycle fatigue life, use traditional welding conditions and quality evaluating method to be difficult to guarantee the high-strength steel welding quality.Adhesion process because of its joint performance not the characteristics of malleable be widely used in industrial circles such as Aero-Space, automobile making.Especially in recent years applying along with novel high tenacity adhesive, tradition spot welding and bonding compound interconnection technique progressively from based on spot welding, adhesive technology be assist to being to assist transition based on bonding technique, spot-welding technology, reduce vehicle body solder joint number, reduce the vehicle body manufacturing cost.Yet, poly-fracture failure in the glue-line that causes owing to cemented joint overload, and expired owing to the suction of starved, adhesive, surface of the work is unclean etc., and interfacial fracture that reason causes lost efficacy is the subject matter that cemented joint lost efficacy, and will directly influence the quality and the service life of cemented joint.Consider actual state and cost requirement in the production, the parts that the cemented joint inefficacy occurs all can not be handled as scrap, therefore, seek a kind of repair technology efficiently and can effectively solve the problem of manufacturing qualities that causes owing to the cemented joint defective, enhance productivity.
Traditional methods of attachment such as arc-welding, resistance spot welding, arc stud welding and mechanical connection can obtain satisfied joint quality usually, but method for repairing and mending as cemented joint, there is intrinsic shortcoming in they: as: resistance spot welding equipment mobility is poor, and need repair the position for some of bonded structure, because structural limitations spot-welding equipment accessibility is difficult to guarantee that patch work can not be finished smoothly; Arc welding heat input is big, thereby causes the serious charing of being heated of very big thermal deformation of bonded structure and adhesive to decompose and reduce joint mechanical property; When conventional arc arc stud welding conduct penetrated the weld repair cemented joint, because the influence that glue-line forms welding pool, the joint repairing quality was difficult to controlled; Can be divided into resistance heat plug welding, friction plug weld etc. according to plug welding Fundamentals of Welding difference, they need punch at workpiece upper strata steel plate, because plug welding in use needs both sides stressed and the power value is bigger, so the solder joint back side needs supporter, and the scope of application is restricted; When MACHINERY JOINT such as bolt connection, riveted joint are used for the patch work of bonded joint, need drill through the hole at joint area, and for resistance spot welding, intensity is low, presentation quality is poor.By above-mentioned analysis as can be known, traditional method of attachment be used to lose efficacy patch work of cemented joint has certain limitation,
Find by prior art documents, China Patent No. ZL200620098285, notification number CN200945539Y, this patent readme is: by add glass fibre in the glue-line of joint, have set retarder in the glass fibre, when cemented joint is stressed glass fibre fracture when cracking, discharge set retarder and can effectively repair crackle.This method weak point is: need add extra glass fibre in glue-line, be unfavorable for automated production, on the other hand, this method only is only applicable to the less environment of crackle degree, the environment that stressed generation obviously is out of shape for joint, glue-line is torn, this method can not be finished reparation.
Summary of the invention
The present invention is directed to above-mentioned prior art problems, a kind of double-screw bolt plunger welding composite connecting method that cemented joint is repaired that is used for has been proposed, make that it utilizes that double-screw bolt welding heat input is little, speed of welding piece, characteristics that efficient is high, and in workpiece surface punching carrying out plug welding, overcome the influence of glue-line to welding quality, utilize arc heat melting nail end metal and joint steel plate to form the molten bath, welding finishes the back evenly is filled between weldering nail and the joint deposite metal under weldering nail squeezing action, and cooling forms solder joint.
The present invention is realized by following technical scheme, the present invention includes following concrete steps:
Described cleaning is meant and uses gauze wiping joint surface dust, and wiping removes the joint surface greasy dirt, uses emery wheel, sand paper to remove joint surface iron rust and coating, avoid in welding process, forming in the molten metal be mingled with, pore mass defect.
Described boring, its aperture of holing is identical with weldering nail diameter, and hole depth equals joint upper strata steel plate and bondline thickness summation, removes glue-line by punching, thereby reduces glue-line forms quality to the molten bath influence.
Described weldering nail is stepped revolving body, is respectively clamping part, flange, operate portions and striking portion from top to down.
Described clamping part, its diameter and stud welding gun weldering nail chuck size match.
Described flange, its diameter are greater than the operate portions diameter of weldering nail, and also greater than the clamping part diameter of weldering nail, flange suppresses the molten bath and splashes and heat radiation, helps reducing the possibility that generates the hole in the molten bath, and the refinement microstructure improves mechanical performance; Simultaneously, sweating heat can the melt portions flange, overflows metal in conjunction with the molten bath and forms " shape for hat " molten bath, improves the mechanical strength of joint.
Described operate portions, its diameter are 8 times to 10 times of joint steel plate thickness, and length is greater than hole depth.
Described striking portion is taper, and tapering is 160 degree.
Step 4, after step 3 weldering nail position was determined well, the welding machine pattern was made as long period gas shield welding pattern, and energising welding then forms liquid hat molten bath;
Described gas shield welding pattern, its welding protection gas flow is 5～7 liters/minute.
The liquid hat of described formation molten bath, be meant: give the energising of weldering nail, to weld nail with weldering nail chuck mentions, produce electric arc between weldering nail and the joint lower floor steel plate, and with elevated height electric arc, be that center arc column length and diameter become rapidly greatly with the striking portion vertex of a cone, weldering nail striking portion and bottom, hole cemented joint metal, the metal heated fusing of hole inwall, all deposite metals form liquid molten bath jointly, and weldering was pinned to and reaches welding gun setting maximum lifting height when welding was finished.
Described formation welding point, be meant that weldering nail inserts the molten bath after, make molten metal flow, evenly be filled in the space between weldering nail and the exemplar, solidify deposite metal, room temperature cooling back, forms welding point, and welding point is formed jointly by weldering nail operate portions, flange, molten bath and joint metal.
The present invention has following beneficial effect: adopt the weldering nailing flange among the present invention, effectively in the inhibition welding process splash in the molten bath, reduce the lost speed of heat, and the bonding formation one of this flange of postwelding and steel plate deposite metal, upper strata, increased the contact area of weldering nail with joint, compare and can't blue weldering follow closely, the joint bearing capacity has improved 50～80%; The inventive method is simple, economy, efficient height, realize easily, in conjunction with the weldering nail of geometry in particular, the cemented joint after the repairing maximum quiet draw shearing near in addition surpass the qualified tack-weld intensity of corresponding joints metal material, steady quality is reliable.
Description of drawings
Fig. 1 gas shield double-screw bolt of the present invention plug welding view;
Fig. 2 the present invention welds the pin structure schematic diagram;
Fig. 3 the present invention repairs back cemented joint generalized section.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment has provided detailed embodiment and process being to implement under the prerequisite with the technical solution of the present invention, but protection scope of the present invention is not limited to following embodiment.
Embodiment one
Present embodiment institute welding point steel plate is the cold rolling high-strength steel BQ170P of no coating, and each layer steel plate thickness is 0.75mm, and adhesive is a heat-curable epoxy resin glue, and bondline thickness is 0.35mm, and the joint gross thickness is 1.85mm.
Present embodiment comprises following concrete steps:
As shown in Figure 2, described weldering nail 1 is stepped revolving body, is respectively clamping part 7, flange 8, operate portions 9 and striking portion 10 from top to down.
Described weldering nail clamping part 7 diameter 6mm, operate portions 9 diameters are 6mm, and operate portions 9 is 1.25mm with striking portion 10 total lengths, and flange 8 diameters are 14mm, thickness 1mm.
Step 4; as shown in Figure 1; stud welding machine welding machine pattern is made as long period gas shield welding pattern; welding current is made as 600 amperes; be made as 150 milliseconds weld interval; weldering nail 1 hoisting depth is made as 1.5mm; with carbon dioxide and argon gas ratio is that 1: 4 industrial gasses are as protection-gas welding; gas flow is made as 5 liters/minute; after parameter adjustment is good; trigger the welding of welding switch; to weld nail 1 with weldering nail chuck 2 mentions; produce electric arc between weldering nail 1 and the joint lower floor steel plate 6; and with elevated height electric arc; with striking portion 10 vertex of a cones is that center arc column length and diameter become rapidly greatly; weldering nail striking portion 10 and bottom, hole cemented joint metal; the metal heated fusing of hole inwall; all deposite metals form liquid molten bath 11 jointly; protection gas in the gas shield device 3 is isolated welding pool 11 and ambient atmosphere in welding process fully; avoid because molten pool metal and alloying element are exposed to high-temperature oxydation in the air; scaling loss and cause cooled welding joint mechanical property to descend, weldering nail 1 arrived welding gun and sets maximum lifting height when welding was finished.
Compared with prior art, the present embodiment beneficial effect is as follows: the strength of welded joint mean value after the present embodiment method is repaired is 4.0kN, and fluctuation range is ± 3%, near the qualified spot welding intensity of cold rolling high-strength steel BQ170P 3.8kN; Present embodiment method mending course is simple, the time is short, efficient is high, and the parts of avoiding being partly with the inefficacy cemented joint are scrapped owing to lacking feasible method for repairing and mending.
Embodiment two
Present embodiment institute welding point steel plate is hot dip galvanized dual phase steel DP600, and each layer steel plate thickness is 0.8mm, and adhesive is a heat-curable epoxy resin glue, and bondline thickness is 0.35mm, and the joint gross thickness is 1.95mm.
Present embodiment comprises following concrete steps:
As shown in Figure 2, described weldering nail 1 is stepped revolving body, is respectively clamping part 7, flange 8, operate portions 9 and striking portion 10 from top to down.
Described weldering nail clamping part 7 diameter 6mm, operate portions 9 diameters are 7.5mm, and operate portions 9 is 1.3mm with striking portion 10 total lengths, and flange 8 diameters are 14mm, thickness 1mm.
Step 4; as shown in Figure 1; stud welding machine welding machine pattern is made as long period gas shield welding pattern; welding current is made as 650 amperes; be made as 150 milliseconds weld interval; weldering nail 1 hoisting depth is made as 1.5mm; with carbon dioxide and argon gas ratio is that 1: 4 industrial gasses are as protection-gas welding; gas flow is made as 6 liters/minute; after parameter adjustment is good; trigger the welding of welding switch; to weld nail 1 with weldering nail chuck 2 mentions; produce electric arc between weldering nail 1 and the joint lower floor steel plate 6; and with elevated height electric arc; with striking portion 10 vertex of a cones is that center arc column length and diameter become rapidly greatly; weldering nail striking portion 10 and bottom, hole cemented joint metal; the metal heated fusing of hole inwall; all deposite metals form liquid molten bath 11 jointly; protection gas in the gas shield device 3 is isolated welding pool 11 and ambient atmosphere in welding process fully; avoid because molten pool metal and alloying element are exposed to high-temperature oxydation in the air; scaling loss and cause cooled welding joint mechanical property to descend, weldering nail 1 arrived welding gun and sets maximum lifting height when welding was finished.
Compared with prior art, the present embodiment beneficial effect is as follows: the strength of welded joint mean value after the present embodiment method is repaired is 8.0kN, and fluctuation range is ± 6%, near the qualified spot welding intensity of hot dip galvanized dual phase steel DP600 9.0kN; Present embodiment method mending course is simple, the time is short, efficient is high, and the parts of avoiding being partly with the inefficacy cemented joint are scrapped owing to lacking feasible method for repairing and mending.
Embodiment three
Present embodiment institute welding point steel plate is no coating dual phase steel DP780, and each layer steel plate thickness is 1mm, and adhesive is a heat-curable epoxy resin glue, and bondline thickness is 0.35mm, and the joint gross thickness is 2.35mm.
Present embodiment comprises following concrete steps:
As shown in Figure 2, described weldering nail 1 is stepped revolving body, is respectively clamping part 7, flange 8, operate portions 9 and striking portion 10 from top to down.
Described weldering nail clamping part 7 diameter 6mm, operate portions 9 diameters are 10mm, and operate portions 9 is 1.5mm with striking portion 10 total lengths, and flange 8 diameters are 14mm, thickness 1mm.
Step 4; as shown in Figure 1; stud welding machine welding machine pattern is made as long period gas shield welding pattern; welding current is made as 1350 amperes; be made as 100 milliseconds weld interval; weldering nail 1 hoisting depth is made as 1.5mm; with carbon dioxide and argon gas ratio is that 1: 4 industrial gasses are as protection-gas welding; gas flow is made as 7 liters/minute; after parameter adjustment is good; trigger the welding of welding switch; to weld nail 1 with weldering nail chuck 2 mentions; produce electric arc between weldering nail 1 and the joint lower floor steel plate 6; and with elevated height electric arc; with striking portion 10 vertex of a cones is that center arc column length and diameter become rapidly greatly; weldering nail striking portion 10 and bottom, hole cemented joint metal; the metal heated fusing of hole inwall; all deposite metals form liquid molten bath 11 jointly; protection gas in the gas shield device 3 is isolated welding pool 11 and ambient atmosphere in welding process fully; avoid because molten pool metal and alloying element are exposed to high-temperature oxydation in the air; scaling loss and cause cooled welding joint mechanical property to descend, weldering nail 1 arrived welding gun and sets maximum lifting height when welding was finished.
Compared with prior art, the present embodiment beneficial effect is as follows: the strength of welded joint mean value after the present embodiment method is repaired is 12.0kN, and fluctuation range is ± 8%, near the qualified spot welding intensity of no coating dual phase steel DP780 11.0kN; Present embodiment method mending course is simple, the time is short, efficient is high, and the parts of avoiding being partly with the inefficacy cemented joint are scrapped owing to lacking feasible method for repairing and mending.
Claims (10)
1. one kind is used for the double-screw bolt plunger welding composite connecting method that cemented joint is repaired, and it is characterized in that, comprises following concrete steps:
Step 1 is carried out cleaning to the cemented joint upper surface;
Step 2 after the cleaning, is holed on the steel plate of cemented joint;
Step 3 with weldering nail chuck clamping weldering nail, makes the hole of weldering nail by the upper strata steel plate closely contact with the lower floor steel plate;
Step 4, after step 3 weldering nail position was determined well, the welding machine pattern was made as long period gas shield welding pattern, and the energising welding forms liquid hat molten bath;
Step 5 after the step 4 welding finishes, will be welded nail and insert the molten bath, treat the room temperature cooling, form welding point.
2. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1, it is characterized in that described cleaning is meant and uses gauze wiping joint surface dust, and wiping is removed the joint surface greasy dirt, use emery wheel, sand paper removing joint surface iron rust and coating.
3. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1 is characterized in that, described boring, and its aperture of holing is identical with weldering nail diameter, and hole depth equals joint upper strata steel plate and bondline thickness summation.
4. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1 is characterized in that, described weldering nail is stepped revolving body, is respectively clamping part, flange, operate portions and striking portion from top to down.
5. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 4 is characterized in that, described clamping part, and its diameter and stud welding gun weldering nail chuck size match; Described striking portion is taper, and tapering is 160 degree.
6. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 4 is characterized in that, described flange, its diameter are greater than the operate portions diameter of weldering nail, also greater than the clamping part diameter that welds nail.
7. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 4 is characterized in that, described operate portions, and its diameter is 8 times to 10 times of joint steel plate thickness, length is greater than hole depth.
8. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1 is characterized in that, described gas shield welding pattern, and its welding protection gas flow is 5 liters/minute～7 liters/minute.
9. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1, it is characterized in that, the liquid hat of described formation molten bath, be meant: give the energising of weldering nail, to weld nail with weldering nail chuck mentions, produce electric arc between weldering nail and the joint lower floor steel plate, and with elevated height electric arc, with the striking portion vertex of a cone is that center arc column length and diameter become rapidly greatly, weldering nail striking portion and bottom, hole cemented joint metal, the metal heated fusing of hole inwall, all deposite metals form liquid molten bath jointly, and weldering was pinned to and reaches welding gun setting maximum lifting height when welding was finished.
10. the double-screw bolt plunger welding composite connecting method that is used for the cemented joint repairing according to claim 1, it is characterized in that, described formation welding point, be meant: after the weldering nail inserts the molten bath, force molten metal flow, evenly be filled in the space between weldering nail and the exemplar, solidify deposite metal, room temperature cooling back, form welding point, welding point is formed jointly by weldering nail operate portions, flange, molten bath and joint metal.
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| CNA2007100479497A CN101143402A (en) | 2007-11-08 | 2007-11-08 | Screw plunger welding composite connecting method for adhesive joint repair |
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| CNA2007100479497A CN101143402A (en) | 2007-11-08 | 2007-11-08 | Screw plunger welding composite connecting method for adhesive joint repair |
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Cited By (15)
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| CN101259567B (en) * | 2008-04-25 | 2010-06-09 | 哈尔滨工业大学 | Method for using ultrasonic vibration to process plug welding porous structure aluminium base composite material |
| CN101850461A (en) * | 2009-04-01 | 2010-10-06 | 平井工作株式会社 | Damper fixing clamp apparatus and manufacturing method thereof |
| CN102350577A (en) * | 2011-09-26 | 2012-02-15 | 奇瑞汽车股份有限公司 | Stud welding gas protection device and welding gun provided with same |
| CN103480955A (en) * | 2013-08-16 | 2014-01-01 | 深圳市元征科技股份有限公司 | Upright-hanging shaft welding structure of lifter |
| CN102089110B (en) * | 2008-07-09 | 2014-04-09 | 纽弗雷公司 | Stud for stud welding |
| CN104384679A (en) * | 2014-09-15 | 2015-03-04 | 内蒙古第一机械集团有限公司 | Method for welding stud to high-nitrogen stainless steel |
| CN105397378A (en) * | 2015-12-30 | 2016-03-16 | 镇江船舶电器有限责任公司 | Double-screw bolt assisting mounting device |
| CN109922903A (en) * | 2016-09-26 | 2019-06-21 | 纽弗雷有限公司 | At least one component is engaged into the method to second component in the case where no pre-formed hole |
| CN111050976A (en) * | 2017-08-31 | 2020-04-21 | 爱多斯株式会社 | Spin friction welding |
| CN111182993A (en) * | 2017-10-09 | 2020-05-19 | 喜利得股份公司 | Fastening method |
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| CN113000993A (en) * | 2021-03-24 | 2021-06-22 | 广州文冲船厂有限责任公司 | Outer plate mark planting and welding process |
| CN113996900A (en) * | 2021-12-17 | 2022-02-01 | 山东建筑大学 | Welding protection device and method for fan reinforcing welding nail |
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| CN101259567B (en) * | 2008-04-25 | 2010-06-09 | 哈尔滨工业大学 | Method for using ultrasonic vibration to process plug welding porous structure aluminium base composite material |
| CN102089110B (en) * | 2008-07-09 | 2014-04-09 | 纽弗雷公司 | Stud for stud welding |
| CN101850461A (en) * | 2009-04-01 | 2010-10-06 | 平井工作株式会社 | Damper fixing clamp apparatus and manufacturing method thereof |
| CN102350577A (en) * | 2011-09-26 | 2012-02-15 | 奇瑞汽车股份有限公司 | Stud welding gas protection device and welding gun provided with same |
| DE102013205767B4 (en) | 2012-04-05 | 2022-03-31 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | LONG ARC WELDING |
| CN103480955A (en) * | 2013-08-16 | 2014-01-01 | 深圳市元征科技股份有限公司 | Upright-hanging shaft welding structure of lifter |
| CN104384679A (en) * | 2014-09-15 | 2015-03-04 | 内蒙古第一机械集团有限公司 | Method for welding stud to high-nitrogen stainless steel |
| CN105397378A (en) * | 2015-12-30 | 2016-03-16 | 镇江船舶电器有限责任公司 | Double-screw bolt assisting mounting device |
| CN109922903A (en) * | 2016-09-26 | 2019-06-21 | 纽弗雷有限公司 | At least one component is engaged into the method to second component in the case where no pre-formed hole |
| CN111050976A (en) * | 2017-08-31 | 2020-04-21 | 爱多斯株式会社 | Spin friction welding |
| JP7030966B2 (en) | 2017-10-09 | 2022-03-07 | ヒルティ アクチエンゲゼルシャフト | Fixing method |
| JP2020536742A (en) * | 2017-10-09 | 2020-12-17 | ヒルティ アクチエンゲゼルシャフト | Fixing method |
| CN111182993B (en) * | 2017-10-09 | 2022-03-18 | 喜利得股份公司 | Fastening method |
| CN111182993A (en) * | 2017-10-09 | 2020-05-19 | 喜利得股份公司 | Fastening method |
| TWI793172B (en) * | 2017-10-09 | 2023-02-21 | 列支敦斯登商喜利得股份有限公司 | fixed method |
| CN111390356B (en) * | 2020-04-17 | 2021-12-28 | 中船黄埔文冲船舶有限公司 | Manufacturing method of anti-skid point |
| CN111390356A (en) * | 2020-04-17 | 2020-07-10 | 中船黄埔文冲船舶有限公司 | Manufacturing method of anti-skid point |
| CN113000993A (en) * | 2021-03-24 | 2021-06-22 | 广州文冲船厂有限责任公司 | Outer plate mark planting and welding process |
| CN113996900A (en) * | 2021-12-17 | 2022-02-01 | 山东建筑大学 | Welding protection device and method for fan reinforcing welding nail |
| CN113996900B (en) * | 2021-12-17 | 2024-01-26 | 山东建筑大学 | Welding protection device and method for fan reinforcement welding nails |
| CN116039104A (en) * | 2023-01-17 | 2023-05-02 | 大连理工大学 | Method for connecting metal and nonmetal materials by stud welding |
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