CN101518863A - Method for utilizing laser welding to repair ancient chime bell - Google Patents
Method for utilizing laser welding to repair ancient chime bell Download PDFInfo
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- CN101518863A CN101518863A CN 200810047371 CN200810047371A CN101518863A CN 101518863 A CN101518863 A CN 101518863A CN 200810047371 CN200810047371 CN 200810047371 CN 200810047371 A CN200810047371 A CN 200810047371A CN 101518863 A CN101518863 A CN 101518863A
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Abstract
The invention discloses a method for utilizing laser welding to repair an ancient chime bell, comprising the following steps of: (1) cleaning welding seam areas of the chime bell; (2) clamping and fixing tightly the chime bell to be welded and repaired so as to lead the crack area to be close as possible; (3) welding and repairing the chime bell with laser by three conditions; (4) polishing the welding seams; (5) rectifying the shape of the chime bell; (6) modulating the tune of the chime bell; and (7) finishing. For the basic characteristics of the welding joint required by the repairing process of the chime bell, such as metallurgical bonding, high strength, little and less deformation and no metallurgical defect and the like, the invention adopts laser welding technology to repair damaged chime bell and simultaneously recover the tone quality, tone frequency and tone color of the chime bell.
Description
Technical field
The invention belongs to historical relic reparation and laser processing technology, be specifically related to a kind of method of utilizing laser welding to repair ancient chime bell, this method can make unearthed ancient records and relics ancient Chinese chime with 12 bells recover its sounding effect.
Background technology
All there is clock each ancient civilized country, the world, but the cross section of these clocks nearly all is positive circle.The stroke longer duration of circle clock can not develop into musical instrument.Zhong Guo ancient Chinese chime with 12 bells only, its cross section resembles two slices watts and lumps together, and is unique almond " box watt " shape moulding.This as box as watt the clock body, the corner has rib again, can make stroke fast speed decay, therefore just can compile in groups according to temperament, uses as rhythm instrument.Except the tenuto time was short, the Chinese ancient Chinese chime with 12 bells of box watt shape can pounded out two audio frequency accurately on the clock: when knocking clock positive, the amplitude of side is zero; When knocking the side of clock, positive amplitude is zero.Like this, double-tone coexistence one, fundamental frequency is clear, overtone is mellow and full melodious, does not disturb mutually, forms moving beautiful music.Ancient Chinese chime with 12 bells are important percussion instruments of Ancient Chinese generation, are used for the imperial palace more and play, or go on an expedition, have an audience with and key activities such as sacrifice.Because the restriction of scientific and technological level at that time, a cover ancient Chinese chime with 12 bells cost is not fallen thick and fast, and is the musical instrument of upper class special use therefore, is grade and symbol of power.
Over nearly 50 years, China archaeological work person successively in Shaanxi, ground such as Henan, Anhui, Sichuan, Shandong, Hebei have found the bronze ancient Chinese chime with 12 bells of the multiple Western Zhou Dynasty to the period of the Warring States.1978, in the unearthed relics of Suizhou, Hubei Province Ceng Houyi tomb, obtained world-shaking discovery: 64 pieces of complete ancient Chinese chime with 12 bells hang on the wooden shelf, are the cover ancient Chinese chime with 12 bells that the unearthed at present quantity of China is maximum, weight is the heaviest, musical note is the most complete, imposing manner is the most grand.Its range is wide to reach five and half octaves, and 12 semitones are complete, is the known in the world musical instrument that has 12 semitones the earliest.The melody that ancient Chinese chime with 12 bells are played, the tonequality grace as heaven's harmony, at home and abroad creates much of a stir.It is the rarity of Chinese national culture art that various circles of society praise it one after another, the miracle of world music history.
In December, 2002, the nine pier Warring states of the company ancient tomb work of excavating that is positioned at Wu Dian town, Zaoyang City, Xiangfan, Hubei formally begins.Excavate out the double-tone ancient Chinese chime with 12 bells that a cover has researching value in chamber, tomb north, it makes age and once to wait the second ancient Chinese chime with 12 bells age suitable, has significant values to understanding Chinese archaeology, world music history and smelting history.Unfortunately, the outer coffin of this coffin chamber is because the ground geological foundation is bad and have the former thereby landslide of grave-robbery hole for robbing, and the wallboard that collapses has been pushed down ancient chime bells and caused in a whole set of 34 ancient Chinese chime with 12 bells several breakages being arranged, and damages the most serious even becomes fritter.
At this damaged ancient Chinese chime with 12 bells, restorative procedure commonly used be with ancient Chinese chime with 12 bells orthopedic after, adopt to glued joint or method for welding is realized the connection of fragment.Though this method can be finished the recovery of ancient Chinese chime with 12 bells exterior appearance,, can't recover the sounding characteristic of ancient Chinese chime with 12 bells because connection material and ancient Chinese chime with 12 bells base material difference are too big.In other words, above-mentioned technology can only be accomplished the outward appearance recovery, but can not accomplish that sound restores.And for the excessive ancient Chinese chime with 12 bells of deformation extent, these methods can be difficult to guarantee to repair the intensity of back clock body because of formed residual stress in the orthopedic process because bonding strength is low.Particularly for large-scale ancient Chinese chime with 12 bells, the secondary cracking even also be difficult to support the deadweight of ancient Chinese chime with 12 bells when hanging, or takes place because bond strength is low in above-mentioned restorative procedure in the process of knocking.So, can only put on the exhibition booth with the ancient Chinese chime with 12 bells of soldering or bonding mode reparation and to show, can't hang on the bell-cot, can't recover the sound of ancient Chinese chime with 12 bells especially.Therefore, seek a kind of effective method of attachment, realize that the shape of above-mentioned damaged ancient Chinese chime with 12 bells and tonequality are restored to have great importance and be worth.
Manual electric arc welding technology is simple, and the intensity height of weld metal is easy to operate, is one of available scheme of repairing by ancient Chinese chime with 12 bells.But because the hot input quantity of manual arc welding technology is big, the distortion of ancient Chinese chime with 12 bells is big, and overall structure and interior tissue that may heavy damage ancient Chinese chime with 12 bells influence its outward appearance and tonequality, bring possible permanent damage to historical relic, therefore have to abandon this technical scheme.
Recent two decades comes, and laser welding technology has that weld seam is narrow, the heat affected area is little, weld strength is high, speed of welding is fast, be connected material is advantages such as metallurgical binding, has obtained extensive use in modern industry.Though a large amount of bibliographical informations has been arranged up to now the mechanism of laser beam welding, quality control rule and property of welded joint influence rule etc., but up to now, do not see employing laser welding technology reparation ancient Chinese chime with 12 bells or other parts to recover the research report of its tonequality.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing laser welding to repair ancient chime bell, this method can be repaired damaged ancient Chinese chime with 12 bells, and recovers its sounding effect.
The method of utilizing laser welding to repair ancient chime bell provided by the invention, its step comprises:
(1) cleans ancient Chinese chime with 12 bells welded seam area;
(2) the ancient Chinese chime with 12 bells clamping of reparation to be welded is fastening, make fracture area close as far as possible;
(3) in the following manner ancient Chinese chime with 12 bells are carried out the laser weld reparation:
(A) when gap joint during, adopt laser directly weld or laser filler welding procedure, with the damaged regional reparation of ancient Chinese chime with 12 bells less than 0.5 millimeter;
(B) when gap joint during at 0.5～2.0 millimeter, the mode that adopts the welding of laser filler is dwindled the gap of restoring area both sides, adopts the mode of Laser Deep Penetration Welding to finish the connection in whole piece slit then, and the damaged zone of ancient Chinese chime with 12 bells is repaired;
(C) when gap joint during, repair according to following process greater than 2.0 millimeters:
(c1) adopt anchor clamps with damaged ancient Chinese chime with 12 bells shaping, adopt spatial digitizer to survey and draw out the defect area size and dimension of ancient Chinese chime with 12 bells then;
(c2), adopt the quick three-dimensional dedicated numerical control software of making of laser melting coating with its layering according to the three-dimensional data of defect area;
(c3) adopt the three-dimensional quick manufacturing process of laser melting coating, carry out the processing of resizing one by one greater than 2.0 millimeters damaged zone at gap joint;
(c4) after block-by-block is finished the size restoration of broken ancient Chinese chime with 12 bells, adopt anchor clamps with the shaping of ancient Chinese chime with 12 bells fragment once more, judge what of gap joint, when gap joint during less than 0.5 millimeter, adopt laser directly to weld or laser filler welding procedure, the damaged zone of ancient Chinese chime with 12 bells is repaired, enter step (4) then; When gap joint during at 0.5～2.0 millimeter, adopt the welding of laser filler to add the technology of laser assembly solder, the damaged zone of ancient Chinese chime with 12 bells is repaired, enter step (4) then; Otherwise, repeat above-mentioned steps (c1)～(c3);
(4) above-mentioned weld seam is polished, make that the surface structure of whole ancient Chinese chime with 12 bells is smooth continuously;
(5) shape of ancient Chinese chime with 12 bells is corrected;
(6) ancient Chinese chime with 12 bells are carried out tuning;
(7) do old.
To the desired basic characteristics of welding point, little as metallurgical binding, high strength, distortion at ancient Chinese chime with 12 bells repair process, less, no metallurgical imperfection etc., the present invention adopts laser welding technology to repair damaged ancient Chinese chime with 12 bells, has recovered tonequality, audio frequency and the tone color of ancient Chinese chime with 12 bells simultaneously.
The specific embodiment
Concrete processing step is as follows:
(1) cleaning of ancient Chinese chime with 12 bells welded seam area
Damaged ancient Chinese chime with 12 bells are cleaned, and mainly are the zones that needs REPAIR WELDING, and fouls such as requirement is derusted, mud expose the metal primary colors;
(2) the packaged folder of the ancient Chinese chime with 12 bells of reparation to be welded is shaped;
Not only want during clamping can well will be to be repaired ancient Chinese chime with 12 bells bulk object accurately, closely clamping, and can not block laser beam light path and powder feeder alloy powder transfer passage, guarantee the smooth implementation of laser beam welding; Simultaneously, can prevent to weld ancient Chinese chime with 12 bells later effectively deforms;
(3) the good ancient Chinese chime with 12 bells of clamping are carried out the laser weld reparation
This is core of the present invention place, and emphasis is to adopt laser welding process to make damaged ancient Chinese chime with 12 bells form metallurgical binding by its shape.And under the cooperation of anchor clamps, guarantee that the global shape of ancient Chinese chime with 12 bells can restore after the laser weld reparation;
Adopting anchor clamps that damaged ancient Chinese chime with 12 bells are carried out shaping, when getting ready for laser welding process, the weldering precondition that may run into when finding ancient Chinese chime with 12 bells REPAIR WELDING has following several:
First kind: disrumpent feelings block clock body both sides coincide better, and gap joint is less than 0.5 millimeter, and this is the defective of the easiest reparation;
Second kind: disrumpent feelings block clock body both sides degree of agreement still can, piece broad, gap joint are between 0.5～2.0 millimeter, the reparation of this clock defective relatively first kind of degree-of-difficulty factor increases;
The third: because phenomenons such as piece are fallen in existence, there is very big defective in disrumpent feelings block clock body both sides, and the gap is very big, can't realize the direct REPAIR WELDING of laser, and this is a kind of defective of repairing the degree-of-difficulty factor maximum.
According to above-mentioned three kinds of typical damaged features of ancient Chinese chime with 12 bells, the present invention adopts following different mode to carry out the laser weld reparation of ancient Chinese chime with 12 bells:
(A) for gap joint less than for 0.5 millimeter the destroyed area, can adopt two kinds of processes to be repaired: the first, laser directly welds, and promptly adopts high-power laser beam directly to realize the penetration fustion welding on the damaged regional both sides of ancient Chinese chime with 12 bells, it does not need to add filler.Situation during ancient Chinese chime with 12 bells edges of regions thinner thickness that this process is fit to be repaired.Specific implementation process is: laser directly welds, and promptly adopts the damaged zone of the direct irradiation of high-power laser beam, finishes the welding of section, forms weld seam; The second, the welding of laser filler is promptly added scolder in the process of laser weld, form needed welding point.During big the and gage distortion of the ancient Chinese chime with 12 bells position thickness of required REPAIR WELDING, can adopt this process.Specific implementation process is: polish double V-groove at the bigger damaged edge of thickness with the hand-held abrasive machine earlier, the zone of thinner thickness does not then need bevel.Control laser instrument, Digit Control Machine Tool and automatic powder feeding device adopt the direct butt welding process of laser when the thin district of welding, the laser filler welding procedure of employing automatic powder feeding is finished the reparation of ancient Chinese chime with 12 bells piecemeal when weld thick zone.For the bigger zone of ancient Chinese chime with 12 bells thickness, when once welding is not saturating, can adopt repeatedly the mode of laser filler welding, successively fill weld seam, realize the reparation of ancient Chinese chime with 12 bells.Must be pointed out that because the irregularities of ancient Chinese chime with 12 bells breakage, the shape of weld seam also is non-regular shape.Therefore, when laser weld is repaired actual ancient Chinese chime with 12 bells, should adopt the CNC laser processing machine bed, utilize the tutorial function of control software, finish the REPAIR WELDING of damaged ancient Chinese chime with 12 bells complicated track.
(B) for gap joint for 0.5～2.0 millimeter the ancient Chinese chime with 12 bells restoring area, the process of intending adopting the welding of laser filler to add laser assembly solder is repaired, promptly the mode of employing laser filler welding is earlier dwindled the gap of welding region both sides, adopts the mode of Laser Deep Penetration Welding to finish the connection in whole piece slit then.Concrete implementation step is: adopting thickness in the bottom of ancient Chinese chime with 12 bells restoring area is that 2-3 millimeters red copper or bronze flakes are as substrate, adopt automatic powder feeding laser filler solder technology, first one side of the ancient Chinese chime with 12 bells defect area that laser beam and powder feeder nozzle alignment need be repaired, start digital control system, implement laser weld; Then, the another side of the ancient Chinese chime with 12 bells defect area that laser beam and powder feeder nozzle alignment need be repaired repeats said process again.Process through such will make the gap of both sides, area to be repaired reduce gradually.After the width of waiting to weld both sides, ancient Chinese chime with 12 bells slit is less than certain size (for example 0.5 millimeter), adopt the mode of Laser Deep Penetration Welding to finish the connection of damaged regional ancient Chinese chime with 12 bells, realize the reparation of ancient Chinese chime with 12 bells.
(C) obviously fall the piece phenomenon when ancient Chinese chime with 12 bells of being repaired exist, the gap between the damaged zone is too big, and in the time of can't carrying out the laser weld reparation, the renovation technique step of intending adopting is:
(c1) adopt special fixture with damaged ancient Chinese chime with 12 bells shaping, adopt spatial digitizer to survey and draw out the defect area size and dimension of ancient Chinese chime with 12 bells then;
(c2), adopt the quick three-dimensional dedicated numerical control software of making of laser melting coating with its layering according to the three-dimensional data of defect area;
(c3) the 3rd, adopt the laser melting coating Rapid Manufacturing Technology, carry out the processing of resizing at gap joint one by one greater than 2.0 millimeters damaged zone, grow on damaged zone that composition and ancient Chinese chime with 12 bells primitive component are approaching, mechanical property quite, the metal level that matches with ancient Chinese chime with 12 bells bulk matrix metallurgical binding, thickness and shape and ancient Chinese chime with 12 bells general structure;
(c4) size restoration of finishing broken ancient Chinese chime with 12 bells at block-by-block adopts special fixture with the shaping of ancient Chinese chime with 12 bells fragment after the gap is enough little again, and the gap joint of confirming this moment is within 2.0 millimeters; If regional area does not still reach requirement, repeat above-mentioned steps (c1) to (c3);
(c5) adopt mode A (when the gap less than 0.5 millimeter) or mode B (when the gap less than 2.0 millimeters), finish the laser weld reparation of ancient Chinese chime with 12 bells.
(4) weld seam after the REPAIR WELDING is polished and repair
The projection of weld seam in the laser weld repair process is ground off with small-sized emery wheel is manual, make that the surface structure of whole ancient Chinese chime with 12 bells is smooth, continuous;
(5) to the quality inspection of laser welded seam:
Adopt various detection method check welded seam areas whether to have metallurgical imperfections such as macroscopic cracking, micro-flaw and pore.Need in case of necessity related defects is polished off, carry out laser weld again.
(6) to the shape correction of ancient Chinese chime with 12 bells
In fact, during the shape correction process had constantly been carried out by being adjusted at of anchor clamps in laser beam welding, the net shape of ancient Chinese chime with 12 bells should satisfy the almond type structure of double-tone ancient Chinese chime with 12 bells.
(7) ancient Chinese chime with 12 bells are carried out tuning;
Laser weld is repaired later ancient Chinese chime with 12 bells, only otherwise have defective such as crackle, the sound of ancient Chinese chime with 12 bells is recovered substantially.But this not enough.Reach the level of musical instrument, also must carry out tuning to ancient Chinese chime with 12 bells, make its tonequality mellow and full, scale can be complementary with the tone of forward and backward ancient Chinese chime with 12 bells, becomes harmonious musical sound.The method of tuning comprises two kinds: when the pitch ratio of ancient Chinese chime with 12 bells after the laser repairing expects that tone is lower slightly, can utilize the metal file suitably to be polished in the tone sensitizing range on the ancient Chinese chime with 12 bells, remove the unnecessary metal of a part gradually, can make the scale of ancient Chinese chime with 12 bells progressively return to normal scope; When the pitch ratio of ancient Chinese chime with 12 bells after the laser repairing expects that tone is slightly high, should adopt laser melting and coating technique in the tone sensitizing range a small amount of homogeneous material of cladding suitably, its tone is descended, be lower than after the tone of expection, make its scale progressively return to normal range (NR) with first method again.
(8) ancient Chinese chime with 12 bells color is done old: the metallochrome of ancient Chinese chime with 12 bells weld seam periphery is carried out necessary chemical treatment, make it return to the patina look of the ancient Chinese chime with 12 bells that are unearthed.Like this, whole repair processes of ancient Chinese chime with 12 bells have just been finished.
In fact, because ancient Chinese chime with 12 bells are long-time buried underground, damage, corrosion are all very serious.Can cause the loss of many places fritter ancient Chinese chime with 12 bells fragment in the unearthed in addition work progress unavoidably,, increase the difficulty that laser weld is repaired ancient Chinese chime with 12 bells to such an extent as to when splicing, can find that ancient Chinese chime with 12 bells lack piece.
Adopt technical scheme proposed by the invention, ancient Chinese chime with 12 bells of being repaired are being restored aspect face shaping, the size fully, and by tuning, can aspect tonequality, scale, also restore fully, promptly reach the purpose that ancient Chinese chime with 12 bells exterior appearance and sound property are repaired simultaneously.
Embodiment 1:
Just there is localized cracks in ancient Chinese chime with 12 bells, and whole piece or the cracked phenomenon of lacking do not take place.Its reparation step is as follows:
(1) ancient Chinese chime with 12 bells crackle and peripheral region are cleaned up;
(2) with anchor clamps that damaged ancient Chinese chime with 12 bells are fastening, guaranteeing to make fracture area close as far as possible under the prerequisite that ancient Chinese chime with 12 bells shape is recovered;
(3) analyze to the thickness of fracture area ancient Chinese chime with 12 bells and along the varied in thickness situation of crack orientation, and the crackle width that needs restoring area is measured, and the relevant data of record; In the present embodiment, at 5-10 millimeters, the width of gap joint roughly changes between 0.2～1.5 millimeter in different fracture area differences damaged ancient Chinese chime with 12 bells along the area thickness of crack orientation;
(4), determine to adopt preceding first or alternative plan respectively to address according to different crackle sections according to crackle width and the pairing ancient Chinese chime with 12 bells thickness of fracture area.Less than 0.5mm and thickness section, adopt CO for the piece slit less than 5mm
2The fast direct welding procedure of axial flow laser instrument, laser power 5kw, 0.8 meter/minute of sweep speed; Less than 0.5mm and thickness section, adopt laser filler welding procedure for the piece slit, need to adopt earlier hand-held emery wheel leave double V-groove, adopt CO then in this zone at 5-10mm
2Fast axial flow laser instrument utilizes the automatic powder feeding device that alloy powder is sent into laser molten pool, laser power 4kw, and 0.8 meter/minute of sweep speed, powder sending quantity 8 gram/minute, the alloy powder composition is and the approaching bell metal of ancient Chinese chime with 12 bells body composition;
(5) after laser weld is repaired, the aforementioned operation that adopts the present invention to propose again, finish ancient Chinese chime with 12 bells polishing, tuning, do repair processes such as old.
Embodiment 2
Ancient Chinese chime with 12 bells have been cracked to become countless little bulks, and it is as follows that it repairs step:
(1) adopt special fixture that the above-mentioned fine grained chippings of ancient Chinese chime with 12 bells is shaped to ancient Chinese chime with 12 bells shape;
(2) measure after the shaping gap size and thickness between the ancient Chinese chime with 12 bells fragment, particularly adopt the three-dimensional anti-instrument of asking to measure size and the thickness that falls the piece position on the ancient Chinese chime with 12 bells;
(3) unscrew anchor clamps, the data of being surveyed and drawn and the single fragment of ancient Chinese chime with 12 bells are decomposed, determine the size range of the required increase of each fragment, particularly fall the size range of the piece required interpolation in zone;
(4) adopt the three-dimensional Rapid Manufacturing Technology of laser melting coating, carry out laser melting coating processing, make the size restoration of fragment arrive the preceding needed optimum size of laser weld at the size of the required recovery of the single fragment of ancient Chinese chime with 12 bells;
(5) adopt special fixture with the ancient Chinese chime with 12 bells fragment shaping once more after the above-mentioned resizing, measure the shaping apparent size and the slit degree of agreement of ancient Chinese chime with 12 bells afterwards then, if repair ancient Chinese chime with 12 bells with laser welding process or the laser filler welding procedure addressed before the gap within 2.0 millimeters, just can directly be adopted; If the gap is more than 2.0 millimeters, repeating step 1-4 then, up to the fragment gap at 2.0 millimeters with till interior; If it is overlapping that the fragment both sides have, then adopt manual emery wheel that the overlapping region is polished off, and the gap joint that makes fragment is in 2.0 millimeters;
(6) ancient Chinese chime with 12 bells through the anchor clamps shaping are carried out laser weld, laser welding process that is adopted and parameter area are different and different according to the thickness of ancient Chinese chime with 12 bells.In the present embodiment, at 5-10 millimeters, the width of gap joint roughly changes between 0.2～1.5 millimeter in different fracture area differences damaged ancient Chinese chime with 12 bells along the area thickness of crack orientation, therefore, laser welding process that is adopted and major parameter and embodiment 1 are identical.That is: for the piece slit less than 0.5mm and thickness section less than 5mm, adopt CO
2The fast direct welding procedure of axial flow laser instrument, laser power 5kw, 0.8 meter/minute of sweep speed; Less than 0.5mm and thickness section, adopt laser filler welding procedure for the piece slit, need to adopt earlier hand-held emery wheel leave double V-groove, adopt CO then in this zone at 5-10mm
2Fast axial flow laser instrument utilizes the automatic powder feeding device that alloy powder is sent into laser molten pool, laser power 4kw, and 0.8 meter/minute of sweep speed, powder sending quantity 8 gram/minute, the alloy powder composition is and the approaching bell metal of ancient Chinese chime with 12 bells body composition;
(7) after laser weld is repaired, the aforementioned operation that adopts the present invention to propose again, finish ancient Chinese chime with 12 bells polishing, tuning, do repair processes such as old.
Claims (1)
1, a kind of method of utilizing laser welding to repair ancient chime bell, its step comprises:
(1) cleans ancient Chinese chime with 12 bells welded seam area;
(2) the ancient Chinese chime with 12 bells clamping of reparation to be welded is fastening, make fracture area close as far as possible;
(3) in the following manner ancient Chinese chime with 12 bells are carried out the laser weld reparation:
(A) when gap joint during, adopt laser directly weld or laser filler welding procedure, with the damaged regional reparation of ancient Chinese chime with 12 bells less than 0.5 millimeter;
(B) when gap joint during at 0.5～2.0 millimeter, the mode that adopts the welding of laser filler is dwindled the gap of restoring area both sides, adopts the mode of Laser Deep Penetration Welding to finish the connection in whole piece slit then, and the damaged zone of ancient Chinese chime with 12 bells is repaired;
(C) when gap joint during, repair according to following process greater than 2.0 millimeters:
(c1) adopt anchor clamps with damaged ancient Chinese chime with 12 bells shaping, adopt spatial digitizer to survey and draw out the defect area size and dimension of ancient Chinese chime with 12 bells then;
(c2), adopt the quick three-dimensional dedicated numerical control software of making of laser melting coating with its layering according to the three-dimensional data of defect area;
(c3) adopt the three-dimensional quick manufacturing process of laser melting coating, carry out the processing of resizing one by one greater than 2.0 millimeters damaged zone at gap joint;
(c4) after block-by-block is finished the size restoration of broken ancient Chinese chime with 12 bells, adopt anchor clamps with the shaping of ancient Chinese chime with 12 bells fragment once more, judge what of gap joint, when gap joint during less than 0.5 millimeter, adopt laser directly to weld or laser filler welding procedure, the damaged zone of ancient Chinese chime with 12 bells is repaired, enter step (4) then; When gap joint during at 0.5～2.0 millimeter, adopt the welding of laser filler to add the technology of laser assembly solder, the damaged zone of ancient Chinese chime with 12 bells is repaired, enter step (4) then; Otherwise, repeat above-mentioned steps (c1)～(c3);
(4) above-mentioned weld seam is polished, make that the surface structure of whole ancient Chinese chime with 12 bells is smooth continuously;
(5) shape of ancient Chinese chime with 12 bells is corrected;
(6) ancient Chinese chime with 12 bells are carried out tuning;
(7) do old.
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| CN105149862A (en) * | 2015-10-21 | 2015-12-16 | 武汉大学 | Repairing method for broken and defected bronze ware culture relic |
| CN105904151A (en) * | 2016-05-24 | 2016-08-31 | 沈阳航空航天大学 | Thin-wall component recombining and restoring method based on pulse welding and laser augmented material restoring |
| CN106624364A (en) * | 2016-12-06 | 2017-05-10 | 上海君屹工业自动化股份有限公司 | Special-shape structure laser welding method |
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| CN105149862A (en) * | 2015-10-21 | 2015-12-16 | 武汉大学 | Repairing method for broken and defected bronze ware culture relic |
| CN105904151A (en) * | 2016-05-24 | 2016-08-31 | 沈阳航空航天大学 | Thin-wall component recombining and restoring method based on pulse welding and laser augmented material restoring |
| CN105904151B (en) * | 2016-05-24 | 2018-07-27 | 沈阳航空航天大学 | Thin-wall part combined-repair method based on pulse welding and laser gain material reparation |
| CN106624364A (en) * | 2016-12-06 | 2017-05-10 | 上海君屹工业自动化股份有限公司 | Special-shape structure laser welding method |
| CN108213713A (en) * | 2016-12-14 | 2018-06-29 | 北京有色金属研究总院 | A kind of thin-wall part combined-repair method for increasing material based on pulse laser and continuous laser |
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