SE194579C1

SE194579C1 -

Info

Publication number: SE194579C1
Authority: SE
Publication date: 1964-01-01

Description

Uppfinnare: A Wiigerbauer Prioritet begard fain den 28 juli 1961 (Osterrike) Uppfinningen avser ett salt att framstalla profiler, sasom U- eller vinkelprofiler, rOr o. d., darav sammansatta konstruktioner av metallband samt anordningar for genomf6- rande av sattet. Inventor: A Wiigerbauer Priority requested on 28 July 1961 (Austria) The invention relates to a salt for producing profiles, such as U- or angular profiles, tubes, etc., of which composite structures of metal strips and devices for carrying out the set.

Ror och profiler kunna framstallas av saval varmvalsade som kallvalsade band av olika material, exempelvis av stalband. Varinvalsade band aro billigaxe, och de kunna aven med framgang omformas till profiler med relativt skarpa bockningskanter. Kallvalsade band aro dyra, och alltefter graden av hallfasthetsOkningen aro de formbara endast nod till vissa minsta kraningsradier. Vid framstallning av profiler aro darfor i manga fall varmvalsade eller L o. .m. injukglOdgade hand att foredraga. Vid vidare bearbetning av profiler och/eller rOr dagger man daremot storsta vikten vid att uppna sa hog hallfasthet som mojligt, och betraffande denna egenskap innebara de av kallvalsade band framstEllda profilerna en fordel. Tubes and profiles can be made from hot-rolled as well as cold-rolled strips of different materials, for example from steel strips. Pre-rolled strips are cheap axes, and they can also be successfully transformed into profiles with relatively sharp bending edges. Cold-rolled strips are expensive, and according to the degree of half-strength increase, the malleable ones are only node to certain minimum crane radii. In the production of profiles, therefore, in many cases hot-rolled or L o. .M. injukglOdgade hand to prefer. In the further processing of profiles and / or tubes, on the other hand, the greatest importance is given to achieving as high a half-strength as possible, and with regard to this property the profiles produced by cold-rolled strips were an advantage.

Endigt teknikens nuvarande standpunkt kan man uppna en alining av hallfastheten hos ror eller profiler genom en ev. upprepad efterdragning i dragbankar, men denna efterbehandling dr dyr, dá den erfordrar mera material och arbetstid, extra anordningar saint ett visst merutrymme. Finally, the current state of the art can achieve an alignment of the hall strength of tubes or profiles through a possible repeated retightening in towbars, but this finishing is expensive, as it requires more material and working time, extra devices saint a certain extra space.

Uppfinningen her till uppgift att astadkomma en kallforstarkning av profiler och ror och darav framstaIlda konstruktio:ner titan att hansyn behover tagas till ovannamnda svarigheter och titan att man fOrlorar de: fordelar, som erhallas vid framstallning av profiler av varmvalsade, relativt mjuka band. Ett annat andamal med uppfinningen är att eliminera s. k. »coilbreaks. Ett ytterligare andamal med uppfinningen är att genom motstandssvetsning fOrena pa sadant satt kallforstarkta profiler och ror till konstruktioner, sasom exempelvis fackverksbalkar. The object of the invention is to provide a cold reinforcement of profiles and tubes and hence produced constructions titanium that the view needs to be taken into account of the above-mentioned responsibilities and titanium that the advantages obtained in the production of profiles of hot-rolled, relatively soft strips are lost. Another object of the invention is to eliminate so-called coilbreaks. A further object of the invention is that by resistance welding the joints are thus cold-reinforced profiles and pipes for constructions, such as, for example, truss beams.

Till grund for uppfinningen digger den insikten, att vid kallformning av profiler de formade stallena, exempelvis boekningskanterna pa en U-profil, erhalla en betyddigt Rad hallfasthet vid tillrackligt liten radie. Vid en pa kant satt framstalld U-profil spelar denna fOreteelse visserligen ingen roll, ty fOrhallarrdet mellan det totala tvarsnittet och det tvarsnitt, som vid kallbehandlingen erhallit Rad hallfasthet, r i regel sã agynnsamt, att flagon vasentlig Mining av hela profilens hallfasthet ej kan observeras. The basis for the invention is the insight that when cold-forming profiles, the shaped stalls, for example the booking edges on a U-profile, obtain a considerable rad strength at a sufficiently small radius. In the case of a U-profile produced on an edge, this phenomenon does not matter, for the ratio between the total cross-section and the cross-section which has been obtained during the cold treatment.

Vid flygplansbyggnad är det exempelvis kant att genom sickning forstarka de plana delarna av tunnvaggiga profiler. Det till grund fOr uppfinningen liggande problemet galler dock ej endast en lokal forbattring av troghetsmomentet utan i f6rsta hand en okning av utgangsmaterialets strackgrans. In aircraft construction, for example, it is an edge to reinforce the flat parts of thin-walled profiles by leaking. The problem underlying the invention, however, applies not only to a local improvement of the moment of inertia but primarily to an increase in the tensile strength of the starting material.

Kand är avert framstallningen av korrugerad plat. Andamalet med sadana element är all uppna en betydande okning av trEighetsoch motstandsmomenten, alltsa en okning av sjalva elementens styvhet och hallfasthet. Materialegenskaperna, sasom strackgrans och draghallfasthet, forbliva dare:mot praktiskt taget oforandrade vid framstallningen av korrugerad plat. De enskilda vagorna hoe en korrugerad plat formas ej samtidigt utan efter varandra ay den utsprungligen plana platen, och den neutrala fibern beh011er darvid sin ursprungliga bredd. Den fardiga korrugerade Dupl. kl. 7 a: 9/01 2- - platen Sr fOljaktligen betydligt smalare an den som utgangsmaterial anvanda, okorrugerade platen. Vagdjupet Sr flerfaldigt, i regel minst 10 ganger, storre an bandtjoaleken. Enligt DIN 59231 har salunda den lagsta korrugerade platen en vaghojd av 15 mm vid en storsta plattjocklek av 2 mm, dvs. hojden Sr 7,5 ganger tjoekleken. Enligt samma norm har en korrugerad plat med 88 mm hojd och 1 mm plattjocklek t. o. m. 88 ganger sa stor hiijd som tjocklek. Kand is avert the production of corrugated board. The spirit of such elements is all to achieve a significant increase in the strength and resistance moments, ie an increase in the rigidity and half-strength of the elements themselves. The material properties, such as tensile strength and tensile strength, remain more: virtually unchanged in the production of corrugated board. The individual waves of a corrugated plate are not formed simultaneously but successively on the originally flat plate, and the neutral fiber thereby retains its original width. The finished corrugated Dupl. at 7 a: 9/01 2- - The plate is consequently considerably narrower than the uncorrugated plate used as starting material. The depth of the wagon is several times, usually at least 10 times, greater than the bandtjoaleken. According to DIN 59231, salunda has the lowest corrugated plate with a vaginal height of 15 mm at a maximum plate thickness of 2 mm, ie. height Sr 7.5 times the tjoekleken. According to the same standard, a corrugated board with a height of 88 mm and a thickness of 1 mm has a thickness of up to 88 times as much as the thickness.

Uppfinningen avser alltsa ett satt att av metallband framstalla profiler, sasom U- eller vinkelprofiler, ror o. d., jamte darav sammansatta konstruktioner, exempelvis fackverksbalkar, och det kanneteeknande for sattet Sr, att bandet Over atminstone en del av sin langd och bredd fore formningen till en profil genom kallformning, exempelvis med hjalp av formvalsar, gives en 'Rad hAllfasthet. Foretradesvis utfOres denna okning av hallfastheten i kallt tillstand sS, att bandet erhaller en vagig eller rillad profil, och det Sr fullt tillrackligt, om rilldjupet Sr mindre an materialets tjocklek. Det salunda kallformade handet kan alltsa ha en tjocklek av samma storleksordning som utgangsmaterialet Prof ileringen astadkommes lampligen under bandets passage genom en valsstol, varvid smala och laga rillor invalsas i bandet. Da dessa rillor ej invalsas efter varandra utan samtidigt, bibehalles den skenbara bandbredden, i motsats till vad fallet Sr vid franistallning av korrugerad plat. Strackgrans och draghallfasthet Oka, medan daremot tojningen minskas. The invention thus relates to a method of producing profiles from metal strips, such as U- or angular profiles, tubes and the like, as well as composite structures therefor, for example truss beams, and it is characteristic of method Sr that the strip profile by cold forming, for example by means of forming rollers, is given a 'Rad strength. Preferably, this increase of the half-strength is carried out in the cold state, so that the strip obtains a vague or grooved profile, and it is perfectly sufficient if the groove depth is less than the thickness of the material. The thus cold-formed hand can thus have a thickness of the same order of magnitude as the starting material. Since these grooves are not rolled one after the other but at the same time, the apparent bandwidth is maintained, in contrast to what is the case Sr when disassembling corrugated board. Strain spruce and drawbar strength Oka, while on the other hand the elongation is reduced.

Genom lampligt val av rilldjup i samband med ett visst hes-Land rillavstand Sr det mojligt att uppna alldeles bestamda, alltsa valfria hallfasthetsvarden. Rillbredden valjes foretradesvis sa, att den mom vissa granser star i ett bestamt forhallande till bandtjockleken. For ett stalband av kvaliteten St 37 har det exempelvis visat sig fordelaktigt att vid en bandtjocklek av 2 mm valja ett rillavstand av c:a 5 mm, dvs. avstandet frau mittpunkten pA ett vagberg till mittpunkten i en vagdal Sr c:a 2,5 mm. En okning av hallfastheten intrader redan, om ett sadant band formas endast nagra tiondels mm, alltsa om bandets nominella tjocklek, dvs. avstandet mellan de vagtopparna forbindande linjerna pa ena sidan och motsvarande linjer pa andra sidan, Sr 2,2 mm (10 %-ig »fortjoekninp). Man kan dock uppna samma &fling av hallfastheten genom att Oka saval rillavstandet som rilldjupet. Pa detta satt Sr det mOjligt att av plat av olika tjocklek framstalla platar med samma nominella tjocklek och samma hallfasthetsegenskaper. Om man vid samma plattjocklek och nominella tjocklek viii variera hallfastheten, kan rillavstandet andras. Ett Rat rillavstand innebar darvid en mindre okning av hallfastheten. I foljande tabell angivas nagra siffervarden betraffande strackgrans, draghallfasthet och tOjning vid en enligt uppfinningen genomford framstallning av plat med olika tjocklek, rillbredd och rilldjup. By suitable choice of groove depth in connection with a certain hes-Land groove distance, it is possible to achieve completely defined, ie optional, half-strength values. The groove width is preferably chosen so that the mom certain borders stand in a definite relation to the strip thickness. For a steel strip of the quality St 37, for example, it has proved advantageous to choose a groove distance of approx. 5 mm at a strip thickness of 2 mm, ie. the distance from the center of a rock to the center of a rock valley Sr about 2.5 mm. An increase in the half-strength already occurs, if such a band is formed only a few tenths, etc., ie about the nominal thickness of the band, ie. the distance between the line peaks connecting the lines on one side and the corresponding lines on the other side, Sr 2.2 mm (10% »ig »fortjoekninp). However, you can achieve the same & fling of the hall strength by increasing the groove groove distance as the groove depth. In this way it was possible to produce plates of different thickness with plates with the same nominal thickness and the same half-strength properties. If, at the same plate thickness and nominal thickness viii, the half-strength is varied, the groove distance may change. A Rat groove distance thereby meant a smaller increase in the half-strength. The following table gives some numerical values regarding tensile strength, tensile strength and elongation in a production of slab with different thicknesses, groove widths and groove depths carried out according to the invention.

Tabell 1. Table 1.

Plattjocklek mm Rillbredd mm Rilldjup mm Nominell tjock- lek mm Strackgrins kg/mm' Draghallfasthet kg/mm' Tojning % 1,9 0 1,9 25,0 36,3 34,8 1,9 0,4 2,3 45,0 45,3 10,7 1,9 0,7 2,6 50,4 50,6 3,6 2,0 0 2,0 36,49,3 25,7 2,0 0,3 2,3 53,6 55,9 10,3 2,0 0,9 2,9 66,3 67,8 3,2 1,4 0 1,38,9 43,2 27,2 1,4 0,2 1,7 47,2 48,1 12,6 1,4 0,9 2,4 60,0 60,2,8 1,4 0 1,30,4 41,8 26,7 1,4 0,3 1,8 46,7 47,1 11,1 1,4 0,7 2,2 59,2 59,4 4,3 Ett band, som pa beskrivet salt genom kallformning givits Rad hallfasthet, kan omformas till godtyckliga profiler. Det Sr naturligtvis Sven mojligt att genomfora en alining av hallfastheten i kallt tillstand mellan tva. eller flera omformningssteg. Enligt en foretradesvis anvand utforingsform av uppfinningen formas ett pa beskrivet satt genom kallformning forbehandlat exempelvis med en rillprofilering forsett och darigenom for-starlit band till U- eller rannformiga profiler eller sargprofiler pa det sattet, att en Alias; konkava krokning (vagdalen) bildar insida och dess konvexa krokning (vagberget) ut-- sida vid profilens bockningskanter. Pa detta satt underlattas profilens formning, och man erhaller dessutom skarpare bockningskanter._ Framstallningen och bearbetnin.gen (exempel- irisav formningsverktygen,. sasom formningsvalsar, dragskivor etc., Sr yid_ detta fOrfarande vasentligt enklare, billigare-_ och noggrannare. — —3 Enligt en speciell utforingsform av -uppfinningen givas endast vissa delar av det ursprungliga bandet okad hallfasthet genom kallformning, medan andra delar forbliva obearbetade. Profilkanter avsedda att senaxe hopsvetsas, exempelvis vid framstallning av ror med langsgaende son', karma shlunda lam-Ras mjuka. Iivensd delar, som senare skola omformas kraftigt, exempelvis de i omradet f8r bockningskanterna hos komplicerade profiler belagna bandpartierna, kunna exempelvis uteslutas fran den hallfasthetslikande kallbehandlingen, sa att dexas ursprungliga tojningsegenskaper bibehallas och kunna utnyttjas vid den foljande formningen. ilven ur arkitektoniska synpunkter eller av andra orsaker kunna enligt uppfinningen kallbehandlade partier omvaxla med obehandlade partier, eller ocksa kunna bredare rillor omvaxla med smalare. Mellan langsgaende rillor kunna aven tvargaende eller snedstallda rillor anordnas, varigenom exempelvis vidhaftningen vid belong kan Ras. Plate thickness mm Groove width mm Groove depth mm Nominal thickness mm Strain grind kg / mm 'Tensile strength kg / mm' Elongation% 1.9 0 1.9 25.0 36.3 34.8 1.9 0.4 2.3 45, 0 45.3 10.7 1.9 0.7 2.6 50.4 50.6 3.6 2.0 0 2.0 36.49.3 25.7 2.0 0.3 2.3 53 .6 55.9 10.3 2.0 0.9 2.9 66.3 67.8 3.2 1.4 0 1.38.9 43.2 27.2 1.4 0.2 1.7 47.2 48.1 12.6 1.4 0.9 2.4 60.0 60.2.8 1.4 0 1.30.4 41.8 26.7 1.4 0.3 1.8 46.7 47.1 11.1 1.4 0.7 2.2 59.2 59.4 4.3 A strip, which on the described salt is given by cold forming Row half-strength, can be transformed into arbitrary profiles. Of course, it is possible for Sven to carry out an alignment of the half-strength in the cold state between two. or several transformation steps. According to a preferred embodiment of the invention, a strip is pre-treated in the manner described by cold forming, for example with a groove profiling and thereby pre-solidified strip into U- or rim-shaped profiles or edge profiles in such a way that an Alias; concave hook (vagdalen) forms the inside and its convex hook (vagberget) out-- side at the bending edges of the profile. In this way the forming of the profile is facilitated, and sharper bending edges are also obtained. According to a particular embodiment of the invention, only certain parts of the original strip are given increased half-strength by cold forming, while other parts remain unprocessed. parts which will later be greatly reshaped, such as the band portions coated in the area of the bending edges of complicated profiles, can for example be excluded from the cold strength-like cold treatment, so that dexa's original elongation properties are retained and can be used in the subsequent shaping. be able to up the find cold-treated parts alternate with untreated parts, or wider grooves can also alternate with narrower ones. Between longitudinal grooves it is also possible to arrange transverse or oblique grooves, whereby, for example, the adhesion at belonging can be reduced.

Enligt uppfinningen foreslas aven, att man med hjalp av efter varandra foljande kallbehandlingsanordningar, alltsa i flera bearbetningssteg, helt eller delvis pa varandra utformar olika slag av rillor, exempelvis langsgaende och tvargaende rillor, sa att kombinerade rillarrangemang erhallas. According to the invention, it is also proposed that with the aid of successive cold treatment devices, i.e. in several processing steps, completely or partially on each other different types of grooves are designed, for example longitudinal and transverse grooves, so that combined groove arrangements are obtained.

Enligt en vidare utformning av uppfinningen kan man dessutom lOsa ett tidigare ol5st problem vid formvalsning. Tidigare har man vid overgang till en annan materialtjocklek varit tvungen att utbyta formvalsarna aven i dct fall, att den for framstallning avsedda profilens yttardimension bibehallits oforandrad. Med hjalp av sattet enligt uppfinningen kan man nu giva ett tunnare band samma nominella tjoeklek som ett tjoeliare, sa att man med samma sats forrnvalsar kan overga till en annan bandtjocklek. According to a further embodiment of the invention, one can also solve a previously unsolved problem in mold rolling. Previously, in the transition to another material thickness, it has been necessary to replace the mold rollers even in the case that the outer dimension of the profile intended for production has been maintained unchanged. With the aid of the method according to the invention, it is now possible to give a thinner strip the same nominal thickness as a twister, so that with the same set of pre-rollers it can be transferred to another strip thickness.

Enligt en vidare utformning av uppfinningen kunna de kallbehandlade profilerna forenas mad varandra genom motstandssvetsning. Harvid utnyttjas mojligheten att lagga de olika profilernas rillor pa varandra sã, att de korsa varandra. Vid motsthndssvetsning uppsta darvid punkter med iikad stromkoncentration ph de stallen, dar rillorna korsa varandra, och det ar darigenom mojligt att med relativt ringa stromfarbrukning pa fOrntbestamda ytor anordna en flerpunktssvetsning. According to a further embodiment of the invention, the cold-treated profiles can be joined together by resistance welding. In this case, the possibility is used to lay the grooves of the different profiles on top of each other so that they cross each other. In the case of resistance welding, points with equal current concentration arise in the places where the grooves intersect, and it is thereby possible to arrange a multi-point welding with relatively low current consumption on predetermined surfaces.

Sattet enligt uppfinningen beskrives narmare I det fOljande under hanvisning till bifogade ritningar. The kit according to the invention is described in more detail in the following with reference to the accompanying drawings.

Fig. 1-3 visa darvid tvarsektioner av band, som Orsetts med en rillprofilering i langd- riktningen. Fig. 4 visar schematiskt f8rloppet vid en profilering. Fig. 5 visar ett enligt uppfinningen kallbearbetat band i tvarsektion, varvid partier med Rad hallfasthet omvaxla med obehandlade partier. I fig. 6 visas en bild ovanifran av ett band, som forsetts med rill- profileringar i olika riktningar. Fig. 7 visar en skarning langs linjen A—B i fig. 6. Fig. 8 visar en enligt ett speciellt utforande fram- stalld U-profil. Fig. 9 visar uppfinningens tillampning pa ett r6r med fyrkantig tvarseklion. Fig. 10 visar en dorrkarmprofil. Fig. 11 forklarar den vanliga framstallningen av en. rannprofil av ett ej forbehandlat band mellan tva formvalsar. Fig. 12 visar samma arbets- forlopp under anvandning av ett enligt upp- finningen forbehandlat band. Fig. 13 och 14: visa framstallning av U-profiler av samma nominella tjocklek i samma formvalssats under anvandning av rillprofilerade band av olika godstjocklek. Fig. 15-17 visa uppfinningens tillampning vid framstallning av sammansatta konstruktioner. Fig. 18 visar schematiskt en totalvy av en anordning for genomfOrande av sattet enligt uppfinningen, och i fig. 19 och 20 visas i st8rre skala detaljer i denna anordning I sidovy resp. i vertikal skarning. Fig. 21 visar i skarning ett for varmeutvaxlare lampligt tillplattat Tor. Fig. 22 och 23 visa en sidovy av rasp. en skarning genom ett av de hada enligt uppfinningen kallbehandlade band, av vilka det tillplattade roret framstalles. Fig. 24 och 25 visa band, som utsatts for tva olika kallbehandlingar, vilka lampligen utforts i efter varandra 101- jande valsstolar. Fig. 26 visar i skarning ett kallbehandlat rundror med langsgaen.de rillor. Fig. 27 visar ett kallbehandlat band med ett kombinerat rillmonster. Fig. 28 och 29 visa en tvarsektion resp. en sidovy av en av kallbehandlade profiler framstalld fackverksbalk, varvid forbindningen mellan ovre resp. undre flansen och fackverket foretradesvis astadkommes genom, motstandssvetsning. Fig. 30 visar en tvarsektion genom en faekverksstrava i derma balk. Figs. 1-3 show cross sections of strips, such as Orsetts with a groove profiling in the longitudinal direction. Fig. 4 schematically shows the course of a profiling. Fig. 5 shows a strip of cold section in cross section according to the invention, wherein portions with Rad half-strength alternate with untreated portions. Fig. 6 shows a view from above of a strip, which is continued with groove profiles in different directions. Fig. 7 shows a cut along the line A — B in Fig. 6. Fig. 8 shows a U-profile produced according to a special design. Fig. 9 shows the application of the invention to a tube with a square transverse branch. Fig. 10 shows a door frame profile. Fig. 11 explains the usual representation of a. edge profile of an untreated strip between two forming rollers. Fig. 12 shows the same work process during the use of a strip pretreated according to the invention. Figs. 13 and 14: show the production of U-profiles of the same nominal thickness in the same mold selection set using groove-profiled strips of different wall thicknesses. Figs. 15-17 show the application of the invention in the manufacture of composite structures. Fig. 18 schematically shows an overall view of a device for carrying out the set according to the invention, and in Figs. 19 and 20 details are shown on a larger scale in this device. in vertical cutting. Fig. 21 shows in cross section a flattened Tor suitable for heat exchangers. Figs. 22 and 23 show a side view of the rasp. a cut through one of the hada cold-treated strips according to the invention, from which the flattened tube is produced. Figs. 24 and 25 show belts which have been subjected to two different cold treatments, which have suitably been carried out in successive 101 rolling roll chairs. Fig. 26 shows in cross section a cold-treated round tube with longitudinal grooves. Fig. 27 shows a cold-treated strip with a combined groove sample. Figs. 28 and 29 show a cross section and a side view of a truss beam made of cold-treated profiles, the connection between the upper and the lower flange and the truss are preferably provided by, resistance welding. Fig. 30 shows a cross section through a truss shaft in this beam.

Det i fig. 1 visade stalbandet 1 bar enligt uppfinningen genom kallvalsning for-setts med en rillprofilering, varvid rillavstandet al ar relativt litet. Forhallandet mellan rillavstandet och plattjockleken an c:a 2:1, och skillnaden mellan nominella tjockleken eller det nominella mallet hi och den verkliga plattjockleken s utgor det utformade rilldjupet. According to the invention, the steel strip 1 shown in Fig. 1 was provided by cold rolling with a groove profiling, the groove distance being relatively small. The ratio between the groove distance and the plate thickness of about 2: 1, and the difference between the nominal thickness or the nominal template hi and the actual plate thickness s constitutes the formed groove depth.

Bandet 2 i fig. 2 liar i jamforelse med ban-deli fig. 1 erhallit en rillprofilering med st8rre rillavstand az och en stone nominal' tjocklek h2. Forhallandet mellan rillavstandet och plattjockleken an c:a 4:1. The belt 2 in Fig. 2, in comparison with the track-deli Fig. 1, has a groove profile with a larger groove distance az and a stone nominal thickness h2. The ratio between the groove distance and the plate thickness is about 4: 1.

I fig. 3 visas ett pa saanma satt framstallt band 3, dock med forhallandevis stor nominella tjocklek h3. Forhallandet radian rillavstand och plattjocklek ar aven hãr c :a 4:1. Fig. 3 shows a strip 3 produced in this way, but with a relatively large nominal thickness h3. The ratio radius groove distance and plate thickness is also here about 4: 1.

Fig. 4 visar schematiskt fOrloppet vid profileringen enligt uppfinningen. Det framgar liar, att bandet 4 vid en svagare ansattning av verktygen kan givas ett lagre rilldjup, aven om kalibreringsdjupet mellan det ovre verk- 4— — tyget 5 och det motsvarande undre verktyget 5' ar forhallandevis start. Fig. 4 schematically shows the process of profiling according to the invention. It can be seen that with a weaker use of the tools, the belt 4 can be given a lower groove depth, although the calibration depth between the upper tool 5 and the corresponding lower tool 5 'is relatively started.

I fig. 5 visas ett band 50, som. endast pa vissa stallen forsetts med en rillprofilering. Har omvaxla darfor oformade partier hi, hi och bs med formade partier b2 och I fig. 6 visas ett band 6, vars kantpartier for-'setts med en rillprofilering 7 i langdriktning,en, medan bandets mittdel forsetts med en tvargaende rillprofilering 8. Fig. 7 visar tillhOrande vertikalsektion. Fig. 5 shows a belt 50, which. only in some places continued with a groove profiling. Therefore, unshaped portions h1, h1 and bs alternate with shaped portions b2 and Fig. 6 shows a strip 6, the edge portions of which are provided with a groove profiling 7 in the longitudinal direction, one, while the middle part of the strip is continued with a transverse groove profiling 8. 7 shows the corresponding vertical section.

I fig. 8 visas den tidigare beskrivna, foretradesvis anvanda utforingsformen av uppfinningen, varvid ett i langdriktningen rillprofilerat band omformas till en U-profil. Bockningen till U-profilen genomfores harvid sa, att en konvex krokning eller ett vagberg 10 bildar utsida, medan den. kon.kava krokningen eller va.gdalen 9 bildar insida vid varje bockningskant. M. a. o. bilda de genom kallvalsning i forvag utformade rillorna den. fardiga profilens profilkanter. Av fig. 8 framgar vi-dare, att kanterna 11 kunna bibehallas oformade, varvid de alltsa ej givits nagon Rad hallfasthet. Fig. 8 shows the previously described, preferably used embodiment of the invention, wherein a longitudinally grooved strip is transformed into a U-profile. The bending to the U-profile is carried out in such a way that a convex hook or a rock 10 forms the outside, while it. the concave hook or wave valley 9 forms the inside at each bending edge. M. a. O. The grooves formed by cold rolling in advance form it. finished profile edges of the profile. Fig. 8 further shows that the edges 11 can be maintained unformed, in which case they have not been given any rad strength.

I fig. 9 visas ett i tvarsektion fyrkantigt r8r, som genom langsgaende somsvetsning framstains av tva profiler av den i fig. 8 visade typen. Svetssommarna 12 aro belagna vid de oformade partierna 11 pa U-profilerna, vilket ur svetsningsteknisk synpunkt innebar fardelar. Fig. 9 shows a square tube in cross section, which is produced by longitudinal welding by two profiles of the type shown in Fig. 8. The welding summers 12 are covered at the unshaped portions 11 on the U-profiles, which from a welding point of view meant far-reaching parts.

Den i fig. -visade dorrkarmprofilen Or for-mad av ett rillprofilerat band, varvid bockningskanterna pa samma satt som forklarats i samband med fig. 8 bildas av de vid kallvalsningen utformade rillornas konvexa sidor 10. Da dylika profiler tidigare framstalldes av varmvalsarle band, upptrada ofta den svarigheten, att de stora plana ytorna utsattes far en. kastning pa grund av en frail s. k. »coil-breaks» harrorande vagbildning. Donna omstandighet led.de ofta till anmarkningar, i synnerhet efter en lackering. De enligt foreliggande fOrfarande framstanda karmprofilerna aro ej behaftade med denna naekdel. The door frame profile shown in Fig. 1 is formed of a grooved profiled strip, the bending edges being formed in the same manner as explained in connection with Fig. often the responsibility, that the large flat surfaces were exposed father one. throwing due to a frail so-called »coil-breaks» harrorande vagbildning. Donna circumstance led.de often to remarks, especially after a painting. The frame profiles produced according to the present method are not encumbered with this component.

' I fig. 11-14 visas schematiskt framstallfling av rannprofiler och LT-profiler. Sasom redan tidigare namnts, visar fig. 11 den lion-ventionella framstallningen av en rannprofil av ett oformat band 13 i en mellan en patrisvals 14 och en matrisvals 15 bildad formappning. Detta kanda arbetssatt resp. denna Tianda anordning fordrar ej endast en mycket exakt dimensionering av valsoppningen utan Oven en mycket noggrann bearbetning av valsarnas krokta partier 16, 17. En rundslipning av dessa krokta partier 16, 17 pa. fornmingsverktygen Or forbunden med stora svarigheter och darfor mycket dyr. Enligt fig. 12 utfores samma arbetsforlopp med ett en1igt uppfinningen genom kallvals.ning forformat (med rillor forsett) band 18, varvid en formappning utbildats mellan patrisvalsen 19 °eh matrisvalsen 20. Pa samma satt som vid bockningen i fig. 8 och 10 vales vid forprofileringen av bandet 18 ett sadant rillavstand, att vid de bOjda partierna i formoppningen en konvex krokning (eller ett vagberg) 10 anligger mot matrisen och en konkav krokning (en vagdal) 9 anligger mot patris.en. Till skillnad frail verktygen i fig. 11 erfordras vid utforandet enligt fig. 12 inga rundslipade ytor pit patrisvalsen, utan verktygen ha huvudsakligen cylindriska och koniska ytor, vilka Oro Mita att slipa. Harigenont erhAlles en vasentlig forenkling av framstallningen. Figures 11-14 show schematically the representation of gutter profiles and LT profiles. As already mentioned, Fig. 11 shows the lion-conventional representation of a ridge profile of an unformed strip 13 in a molding formed between a partition roll 14 and a matrix roll 15. This can be employed resp. this Tianda device requires not only a very precise dimensioning of the roll opening but also a very careful machining of the curved portions 16, 17 of the rollers. fornmingsverktygen Or associated with great responsibilities and therefore very expensive. According to Fig. 12, the same process is carried out with a strip 18 preformed (cold grooved) according to the invention, in which case a molding is formed between the matrix roll 19 ° and the matrix roll 20. In the same way as in the bending in Figs. 8 and 10, the pre-profiling of the belt 18 is such a groove distance that at the curved portions of the mold opening a convex hook (or a rock) 10 abuts against the matrix and a concave hook (a rock valley) 9 abuts against the patris. Unlike the tools in Fig. 11, in the embodiment according to Fig. 12 no round ground surfaces are required for the patris roller, but the tools have mainly cylindrical and conical surfaces, which Oro Mita need to grind. As a result, a substantial simplification of the preparation is obtained.

Fig. 13 och 14 visa pa samma salt framstallningen av U-profiler, varvid aterigen de i forvag utformade rillorna bilda bockningskanterna, och inga rundslipade patrisrullar erfordras. Av dessa figurer framgar dessutom, att man mellan patrisrullen 21 och matrisrullen 22 kan omforma olika tjoeka band 23 resp. 24 till U-profiler, varvid bandens nominella tjocklek h Or lika star. Detta innebar en alldeles speciell fordel, om profiler av samma dimensioner skola framstallas av olika godstjocklek. For detta andamal gores rilldjupet i den tunnare platen stone eller sa start, att rilldjup plus plattjocklek Mlles konstant. Oin kallbehandlade platar med samma nominella tjocklek ehuru olika godstjocklek skola givas samma halfasthetsegenskaper, maste man fin-den tunnare platen valja ett mot det stOrre rilldjupet svarande storm rillavstand. Vid vaxling fran en profil till en annan med samma ytterdimensioner ehuru med annan plattjocklek behover man enligt uppfinningen ej byta ett flertal formrullar utan endast det for kallbehandlingen enligt uppfinningen erforderliga valsparet. Dot for den foljande proceduren erforderliga bandet behover ej inforas i anlaggningen genom nytt instick, sasom i allmanhet Or nodvandigt vid programvaxling i profilvalsningsmaskiner, utan bandet kan med sin framre ande fastsvetsas direkt vid det utgaende bandets bakre uncle. Produktionen i en sadan anlaggning blir darigenom vasentligt aad. For att ytterligare paskynda programvaxlingen kunna ett flertal valsstolar for kallbehaniling enligt uppfinningen anordas after varandra, varvid man alltsa i vane sarskilt fall utnyttjar dot valspar, som instants med hansyn till den under bearbetning varande plattjockleken. Be &riga valstolarna kunna da sta oanvanda. Figs. 13 and 14 show on the same salt the production of U-profiles, whereby again the grooves formed in advance form the bending edges, and no round-ground patris rolls are required. From these figures it also appears that between the particle roll 21 and the matrix roll 22 it is possible to reshape different thick strips 23 and 23, respectively. 24 to U-profiles, the nominal thickness of the bands h Or being equal. This entailed a very special advantage, if profiles of the same dimensions were to be produced of different wall thicknesses. For this purpose, the groove depth is made in the thinner slab stone or so start, that groove depth plus slab thickness Mlles constant. In cold-treated slabs with the same nominal thickness, although different wall thicknesses should be given the same semi-strength properties, the thinner slab must be chosen for a storm groove distance corresponding to the greater groove depth. When switching from one profile to another with the same outer dimensions, although with a different plate thickness, according to the invention it is not necessary to change a plurality of mold rollers, but only the pair of rollers required for the cold treatment according to the invention. The tape required for the following procedure does not need to be inserted into the plant by new insertion, as is generally necessary for program change in profile rolling machines, but the tape can be welded with its front end directly to the rear uncle of the outgoing tape. The production in such a plant thus becomes essentially aad. In order to further speed up the program change, a plurality of roll chairs for cold handling according to the invention can be arranged one after the other, in which case, in special cases, dot roll pairs are used as instances with regard to the plate thickness being processed. The expensive wheelchairs can then be used.

De vid kallbehandlingen enligt uppfinningen uppstaende rillorna Oro anvandbara for en flerpunktssvetsning. Fig. 15 visar en konstruktion sammansatt av en enligt uppfinningen med rillprofilering forsedd U-profil 25 och en pa samma satt utformad vinkelprofil 26. Om man mot de hada korsande platpartiernas utsidor ansatter stromtillfOrselanordningar, exempelvis platta elektroder, horande till en motstandssvetsnin.gsmaskin, kan man i ett ar- — — betsfarlopp utfora en vid de ifragavarande rillkorsen uppkommande flerpunktssvetsning. The grooves arising in the cold treatment according to the invention can be used for a multi-point welding. Fig. 15 shows a construction composed of a U-profile 25 provided with groove profiling according to the invention and an angular profile 26 formed in the same way. in a work hazard, perform a multi-point welding occurring at the groove crosses in question.

Om de for forbindning avsedda profilernas rillor vid framstallning av en forbandskon- struktion lopa parallella, kan samma effekt uppnas genoni mellanlaggning av ett styche med tvargaende rillor eller genom mellanlagg- ning av tradstycken, sasom schematiskt visas i fig. 16 och 17. De med parallella rillor f Orsedda banden. 27 och 28 hopsvetsas med var- andra via ett mellanstycke 29, varvid de infaras Indian stromtillforselorgan eller elektroder 30 och 31. If the grooves of the profiles intended for connection run parallel in the production of a joint construction, the same effect can be achieved by interlacing a piece with transverse grooves or by interleaving wire pieces, as schematically shown in Figs. 16 and 17. Those with parallel grooves grooves f Orsedda bands. 27 and 28 are welded together via an adapter 29, inserting Indian power supply means or electrodes 30 and 31.

Sattet enligt uppfinningen kan tillampas vid de for narvarande vanliga valsningsstrackor- na for profiltillverkning. For detta andamal aro saval formvalsningsanlaggningar corn dragbankar lampade. Malian bandsvetsningsanordningen och formvalsningsmaskinen resp. drag-Milken anordnas lampligen en tillrackligt kraftig valsstol for den enligt uppfinningen Onskade kallbehandlingen. Fig. 18 vicar salematiskt en sadan anlaggning. Fran en haspelrulle 33 fares bandet 32 via en drivrullmekanism 34 och en bandandsax 35 till en svetsningsanordning 36, med Tars hjalp det utlopande bandets ande hopsvetsas med det frau haspelrullen kommande bandets franne ande. en valsstol 37 genomf8res sedan bandets kallbearbetning, exempelvis rannprofilering, varvid en iikad hallfasthet uppnas pa beskrivet satt. PA valsstolens axlar aro formrullar pasatta, som exempelvis ha den i fig. 4 visade utformningen saint uppvis,a en tillrackligt hag hardhet, exempelvis 65 RC. Ansattningen av vaisarna sker sâ, att den Onskade Okningen av hallfastheten uppnas. Med 38 betecknas en formvalsnin.gsmas kin. The set according to the invention can be applied to the presently common rolling tracks for profile production. For this purpose aro saval mold rolling plants corn drawbars lampade. The Malian strip welding device and the mold rolling machine resp. drag-Milken, a sufficiently strong rolling chair is suitably arranged for the cold treatment desired according to the invention. Fig. 18 salematically shows such a plant. From a reel 33 the belt 32 is conveyed via a drive roller mechanism 34 and a belt shears 35 to a welding device 36, with Tars helping the spirit of the flared belt to be welded together with the spirit of the belt coming from the reel. a roller chair 37 is then carried out after the cold working of the strip, for example edge profiling, whereby an equal half-strength is achieved in the manner described. On the shafts of the roller chair, the rollers are fitted, which, for example, have the design shown in Fig. 4 with a sufficient hardness, for example 65 RC. The use of the wires takes place in such a way that the desired increase in the half-strength is achieved. 38 denotes a mold rolling machine.

Det mekaniska forloppet vid kallbehandlingen enligt uppfinningen är foljande. Om valsarna narmas varandra och ingripa mot det obehandlade bandet, astadkommes darvid forst en tvargaende bojning vaxelvis uppat och nedat. De i tvarriktningen sett yttre fibrerna bliva darvid vaxelvis strackta och stukade, varigenom de M Rad hallfasthet. NAgon minskning av bandbredden uppkommer dock ej. Om rillavstandet ar tilrdakligt stort i forhallande till plattjockleken (fig. 2), uppkommer efter tvarbojningen en tvargaende strackning, varvid tryckspanningarna sa snidningom upptagas pa rillornas inside. Vid en ytterligare ansattning av rillformningsrullarna slitter sig f8rst valsoppningen, varigenom saval tvarbojningen som strackningen i tvarriktingen avslutas. En ytterligare fortrangfling av valsoppningen orsakar sedan en stra&- valsning under minskning av det ursprungliga bandtvarsnittet. Man liar alltsa mojighet att genom. utformning av verktygen saint genom lamplig ansattning av dessa, dvs. ett valfritt avslutande av kallbehandlingen, uppna de onskade siffervardena for straekgrans och tojning. The mechanical process of the cold treatment according to the invention is as follows. If the rollers approach each other and engage against the untreated belt, a transverse bend is first achieved alternately up and down. The outer fibers seen in the transverse direction are thereby alternately stretched and sprained, whereby they M Rad half-strength. However, no reduction in bandwidth occurs. If the groove distance is sufficiently large in relation to the plate thickness (Fig. 2), a transverse tension arises after the transverse bending, whereby the compressive stresses are then sliced up on the inside of the grooves. In a further application of the groove-forming rollers, the roll opening first wears off, whereby both the transverse bending and the stretching in the transverse direction end. A further narrowing of the roll opening then causes a straight & rolling while reducing the original strip cross section. It is therefore possible to get through. design of the tools saint by appropriate use of these, ie. an optional end of the cold treatment, achieve the desired numerical values for stretch marks and stretching.

Det tredje steget i forfarandet, dvs. strackvalsningen, kan utnyttjas ej endast fOr en ytterligare iikning av det ursprungliga bandets hallfasthet utan aven far en egalisering eller kalibrering av bandet. Darigenorn är det mojligt att under anvandning air varmvalsade, alltsh billigare band, rar och profiler framstalla kallvalsade band med tjocklekstoleranser. The third step in the procedure, i.e. stretch stretching, can be used not only for a further calibration of the original strength of the original belt but also for a leveling or calibration of the belt. Darigenorn, it is possible to produce hot-rolled, all-cheaper strips, rar and profiles during use, cold-rolled strips with thickness tolerances.

For tvarbojningeu och tvarstrackningen är det fordelaktigt, om valsdiametern ar ster i fOrhallande till plattjockleken, sa att en vanligen forekornmande tendens till minskning av den skenbara handbredden motverkas. Vid strackvalsning är det daremot fordelaktigt, cm valsdiametern halles sa liten som mojligt. Enligt en utformning av uppfinningen kan detta uppnas darigenom, att valsstolen valfritt far arbeta som duo- eller kvartovalsstol. Man kan naturligtvis aven anordna en duovalsstol efter en kvartovalsstol eller omvant. Vid en plattjocldek av 1,5-2,5 mm kan duovalsstolens valsdiameter lampligen uppga till 150 —250 mm, medan valscliametern i kvartovalsstolen kan vara 40-80 ram. For transverse bending and cross-stretching, it is advantageous if the roll diameter is proportional to the plate thickness, so that a generally occurring tendency to reduce the apparent hand width is counteracted. In stretch rolling, however, it is advantageous that the roll diameter is kept as small as possible. According to a design of the invention, this can be achieved in that the roller chair may optionally work as a duo or quarter-roller chair. Of course, you can also arrange a duo-roll chair after a quarter-roll chair or vice versa. With a flat thickness of 1.5-2.5 mm, the roll diameter of the duo roll chair can suitably be 150-250 mm, while the roll diameter of the quarter roll chair can be 40-80 frames.

Fig. 19 och 20 visa schematiskt en sadan kvartovalsstol. 39 och 40 beteckna har iivre resp. undre stodvalsen, 41 och 42 aro den tilt-re resp. den undre strackvalsen (arbetsvalsarna), 43 beteeknar det ej behandlade och 44 betecknar det enligt uppfinningen behandlade bandet. Figs. 19 and 20 schematically show such a quarter-choice chair. 39 and 40 denote have iivre resp. lower standing roller, 41 and 42 aro the tilt-re resp. the lower tension roller (work rollers), 43 denotes the untreated and 44 denotes the strip treated according to the invention.

Det forhallandet, att on aning av ytan in-trader vid kallbehandlingen, kan utnyttjas far framstallning av ror for varmeutvaxlare enligt det beskrivna forfarandet. Sasom visas samband med ett tillplattat ror i fig. 21-23, placeras lampligen langsgaende rillor pa de stallen av bandet, vilka senare skola omformas. De bandpartier, som skola forbliva plane, forses daremot med tvarghende rillor, varigenom astadkommes, att roret far mojlighet att motsta vasentligt hogre try& an vad fallet an med ett av obehandlade band framstallt nor. The condition that the surface enters during the cold treatment can be used for the production of tubes for heat exchangers according to the described method. As shown in connection with a flattened tube in Figs. 21-23, longitudinal grooves are suitably placed on the stalls of the belt which will later be reshaped. The belt sections, which are to remain flat, on the other hand, are provided with transverse grooves, whereby it is ensured that the rudder is given the opportunity to withstand substantially higher pressure in the case of one of the untreated strips.

Fig. 26 vicar ett i tvarsektion runt ror, sorn framstallts av ett enligt uppfinningen med langsgaende rillor forsett band genom hopsvetsning av bandkanterna. Dessa kunna f Orbindas med varandra genom induktions- eller motstandssvetsning. Fig. 26 shows a cross-section around tubes, which is made of a strip provided with longitudinal grooves according to the invention by welding the strip edges together. These can be connected to each other by induction or resistance welding.

Fig. 27 visar ett enligt uppfinningen kallbehandlat band med en langsgaende rillprofile- ring pa kantpartierna. Intl11 denna langsgaen- de profilering her bandet farsetts med snedstallda bucklor, och mellan de snedstallda bueldorna ar en central praglingsprofilering utformad. Ett sadant band kan med fordel anvandas for framstallning av byggnadsprofiler, prydnadsror och andra delar med arkitektonisk effekt. Fig. 27 shows a strip cold-treated according to the invention with a longitudinal groove profile on the edge portions. Intl11 this longitudinal profiling here the band is fastened with oblique dents, and between the oblique bumps a central embossing profiling is formed. Such a strip can be used to advantage for the production of building profiles, ornamental tubes and other parts with architectural effect.

Fig. 28, 29 och 30 visa framstallningen av en fackverkshalk. Tva med langsgaende och tvarghen.de profilering farsedda hattprofiler anvandas har som Ovre och undre flans i bal- 6— — ken saint forbindas genom flerpunktssvetsning med ett sicksackformigt forlopande lackverk, som bestar av en med rillprofilering forsedd U-profil. Fackverket kan dock aven ha nagon annan tvarsektion. Figs. 28, 29 and 30 show the representation of a truss slip. Two longitudinal and tvarghen.de profiled hat profiles are used as the upper and lower flanges in the beam saint are connected by multi-point welding with a zigzag-extending lacquerwork, which consists of a U-profile provided with groove profiling. However, the truss may also have another cross section.

Sammanfattningsvis kan framhallas, att uppfinningen M. a. erbjuder foljande fordelar: en efter onskan varierbar Okning av hallfastheten, i synnerhet strackgransen; en &- Ding av sakerheten mot utbuktning av plana profildelar; ett underlattande av formningen och en billigare framstallning av formrullar; mojlighet att bearbeta olika tjocka platar till profiler av samma dimensioner utan att byta eller omstalla formrullar eller dragverktyg; en forstorad yta och darigenom battre varmeutvaxling eller forbattrad vidhaftning vid be-tong; speciellt andamalsenlig- utformning for forbindning med hjalp av motstandssvetsning. In summary, it can be pointed out that the invention, among other things, offers the following advantages: a variable increase in the hall strength, in particular the tensile strength; a & - Ding of the security against bulging of flat profile parts; a facilitation of the molding and a cheaper production of mold rolls; possibility to process different thick plates into profiles of the same dimensions without changing or rearranging mold rollers or drawing tools; an enlarged surface and thereby better heat exchange or improved adhesion to concrete; especially duck-like design for connection with the help of resistance welding.

Claims

Attention:

Salt for the production and connection of metal strip profiles, such as U-profiles, gutter profiles, angle profiles, zigzag profiles, tubes, etc., the strip or parts thereof being given that one or more strips in the roll opening between calibrated caliper rolls are provided with a remaining groove profiling, where the grooved strip or strips are continuously formed into profiles on such salt, that a concave curvature or cradle of a groove forms inside and a convex hook or rock forms outside at a bending edge, and that the profiles are then connected to structural parts by welding along the zones which have unchanged half-strength, or using point or line contacts between the grooved zones of the profiles.

2. Set according to claim 1, characterized in that the nominal thickness of the strip through the cold forming Mins by at least 10%.

Salt according to patent claim 1 or 2, characterized in that the strip is provided along a part of its length with a longitudinal groove profiling and along another part of its length is provided with a transverse or inclined groove profiling.

Salt according to any one of claims 13, characterized in that the strip Over a part of its width, in particular at the edge portions, is provided with a groove profiling (7) in the longitudinal direction and Over another part of its width, in particular Mom the middle portion, is provided wed and transverse groove profiling (8).

5. Set according to any one of patent claims 1-4, wherein the grooved profile strip is reshaped in the opening between a particle roll and a matrix roll, characterized in that the reshaping is carried out with angularly ground tools, the forming edges of the particle roll (19, 21) engaging in the concave strip hooks (9).

Salt according to any one of claims 1-5, characterized in that strips of different plate thickness but with the same nominal thickness are formed into profiles of the same appearance using the same forming tools, the forming openings of which correspond to a predetermined nominal strip thickness.

7. Set according to patent claim 6, characterized in that in order to obtain equal half-strength properties in the profile at the same nominal thickness, although at different plate thicknesses the thinner strip is given.

Salt according to any one of claims 1 to 7 for the production of nor by welding the profiles, characterized in that a strip is exempted from the half-strength-seeking treatment along the edges which are to be welded later.

Apparatus for continuously carrying the set according to any one of claims 1 to 8, characterized by a roller chair (37) with a pair of mold-spamming, calibrated rollers (41, 42), between which the strip intended for molding is advanced, the rollers employment is regulharhar, subsequent mold rolling machine. (38) Further shaping of the grooved (compressed) strip into structural profiles, for example a U-profile or edge profile, and possibly a welding machine for connecting the different profiles. Request publications: Patents treat Great Britain 492 230, 898 143.