DE703127C - Chamber for cooling soft annealed workpieces made of light metal alloys - Google Patents

Description

Chamber for cooling soft annealed workpieces made of light metal alloys The refined light metal halves "igc-, z. B. sheets, strips, which are more or less strong in their processing, subjected to deformation associated with great difficulty in the cured state must be treated with heat and connecting cles before processing them Be subjected to quenching. As is well known, Dabci lzann has chosen to do so (The temperature during soft annealing, the timing of the hardening process influenced. ') t and thus the state of easy deformability of the light metal alloy be adapted to the requirements of the respective processing time.

Irs, however, the strength values achieved during quenching and tempering are higher, the faster the material is cooled , the more Z it is. It is therefore very # erwickel in preferably in aircraft resulting components -th form estaltung that a lan-c machining-ZD C n-up time requiring further high strength are said to have forced to a Dearbeitungsverfahren, wherein in the course The deformation process involves multiple soft annealing and quenching of the tool die. Soft annealing is carried out in a salt bath or electric air furnace and quenching in cold water.

This known method of treatment for the Z> shaped pieces has the disadvantage that, during quenching, tensions occur in the material which change the shape of the material as a result of the pressing or stretching process. The formation of the shape is therefore more or less uncontrollable and thus the formation of precisely shaped workpieces is #difficult. The final design often requires lengthy rework.

Another drawback of the known finishing process must be there It can be seen that the workpiece is easily corroded by residues of water form that are harmful.

In order to prevent the warping and lateral warping that occurs when quenching glowing metal objects in the liquid bath, it has already been proposed to subject the glowing pieces to a pre-cooling in the manner by taking from a container or the like. allows a cooling liquid to drip onto the rods, as a result of which pre-cooling occurs. which prevent crimping when e-entering the actual cooling bath soH. Here jüdoch takes place fonselweltende of the Auftropfstelle gradually cooling the workpiece it and thus a iiiigleiclini .ii.Iiig * (-. Cooling, the tensions in the workpiece ergibL also tu to distortions in Wurkstück lead These defects are not% (, riiiiederi , ivenn inan one on (directed las workpiece 11eWuü- or FNsigkdmsuaM alsAbschrekkungsmittel used. Even though. the Flüssigkeitssuald of finely zerstäu, 1) t (#m water spray # hosteht. o is thereby not uniform but only tine zone blowing is ausdelinende and therefore Incredible cooling achieved.

One now has the knowledge of the night of uneven cooling tries to eliminate the deficiencies. then cold water as a liquid bath not used and the quenching by a strong air stream with a spray causes hm. where one made the strike, not only looking for deterrence, through suitable air conduction, the most uniform possible cooling of all parts of the To achieve annealing material, which, however, cannot be reached with an air flow.

The invention relates to a chamber for cooling soft annealed Workpiece egg, made of light metal alloys, the device of which according to the invention so The main thing is that uneven cooling of the work pieces does not occur can. The distinguishing feature is that. that the nozzles to form the spray or introduction of the cold air essentially (-n at the boundary walls of the closed Cooling chamber are arranged in such a way. that the workpiece or the workpieces in front of coolant are covered on all sides.

The advantage is therefore achieved that the annealing material brought into the cooling chamber is immediately enveloped by a cooling device when the cooling device is inserted and only comes into contact with an essentially stationary mist, while a flow is only intended to remove the heated NeheIcWcht inrgesehmi is d- 11. There follows a slow exchange of the fog layer coming with the annealing material.

Due to EAndmg due IM even cooling of the Wühgutes and thereby the advantage is achieved that sheet metal body. the ini stretching and pressing process bervits have received their valid form. you lose this through the cooling process. so that you continue to rework in the state- f, tllt. Furner ki3iiii (-ii z # in; iiiiiii, IZ, 11 # and by nictun- , verbundt-nu UM v (T- be appreciated. z. B. kümen fudgu Wysag- share. like l '# tillij) ft (ilt # alls ' Meichem tin with gusCh wid in dvr IhntChinn a, inAtit a tT- dun. Piu nozzles #nlur for 1, ildtiii. # " ti # .s SprühnCiols ## d (r 1 - introduction iti- K- # tli air inside for quenching% nn hollow also work inside lZi-ii-nniurt (#il ## n Should be in gedgnunz- Mse provided süin. Ij.t;) ( i can the Kain- iner through fin construction grids irch min early quenching of several clinic \ WO- Pieces made up look like this house Os can be retracted and extended (# au, -forms i # a Lind as Tr # - (- r flur mittlei-un Düss, body dienun, with an final piece cii for the v, r- suhen suin k - # * -, z) iiei). Diüsc Gustullu can also only act as a di- # eiitri "er so that they are in 1-Iolilrziuii-i (» stuck to be brought in klunsi. ! AM hi the Kältekanuner cinfahrharur wa-en for the workpiece dei icii places with sign!) i - # - cliuii. ## eii and --With- teln zuecks; Introduction of spray pipes zivischen the Hinzeltvileir (Ins W (# rk-siicküs provided suin.

Claims (1)

PATENT CLAIMS: i. Cooling chamber% oii Annealed workpieces. the end Hisbus special fittings. unier use (-ines ga5. #, i-tigeii cooling- inittuls or by nozzles urzeugit n Spruhnt-bels, chidurch gekeiiii;, cicli; ic-z # the nozzles to form the S1) z # -iiiiii (-1) uls odur P-introduction of the Kaltiutt ini Hchull at dc11 major closed KÜhlkammur Gl (-r.irt (Courage are. Da13 the i) n% -. dic % MUMM vain 1Zühhulupi aNsubig uin- litillt are. 2. Rabbit according to claim marked that siu with is mistaken. le als (In and ausahrku - (# Frames and as carriers% ou pern and or all come. Chamber after clen. At # 1) ruchun i or 2. thereby the in dit K; 'il.t (! k-riiiiiiiur Tneis- for the workpiece with in im; Ingt- Order spray tubes i-, i.