PL693B1 - Pressed helm. - Google Patents
Pressed helm. Download PDFInfo
- Publication number
- PL693B1 PL693B1 PL693A PL69320A PL693B1 PL 693 B1 PL693 B1 PL 693B1 PL 693 A PL693 A PL 693A PL 69320 A PL69320 A PL 69320A PL 693 B1 PL693 B1 PL 693B1
- Authority
- PL
- Poland
- Prior art keywords
- helm
- pressed
- production
- visor
- helms
- Prior art date
Links
- 241000380131 Ammophila arenaria Species 0.000 title claims description 13
- 230000001012 protector Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Description
Dazenie do wytwarzania helmów z ze¬ laza, ceiem otrzymania zupelnego zabez¬ pieczenia przeciw kulom szrapnelowym i znacznego bezpieczenstwa przeciw odlam¬ kom granatów, doprowadzilo do wytwa¬ rzania helmów ze zwyklej i niehartowanej, zelaznej blachy manganowej; zadania jed¬ nakze nie rozwiazano. Trudnosc polega na tern, ze równoczesnie musi byc spelniony caly szereg warunków, zarówno dla wy¬ tworzenia jak i uzycia helmu. Dla uzycia wymaga sie aby helm przykrywal te cze¬ sci glowy, które wymagaja ochrony, aby posiadal dostateczna grubosc przeciw dzialaniu pocisków i równoczesnie — nie¬ wielka wage. Dla wykonania jest waznem, aby caly helm byl wyrobiony z jednego kawalka blachy przez tloczenie na zimno.* Mala waga wymaga uzycia cienkich blach, a tern samem stosowania szlachetnych hartowanych gatunków stali. Wyrabianie helmów z tych szlachetnych gatunków stali zapomoca tloczenia, zwlaszcza jezeli helm prócz naglówka ma posiadac daszek na oczy i ochraniacz karku, przedstawia znaczne trudnosci, glównie z powodu wiel¬ kiej wytrzymalosci (80 kg/mm2) tych stali, juz w stanie wyzarzonym.Liczne próby wykazaly, ze niektóre ga¬ tunki stali posiadaja dostateczna zdolnosc do formowania na zimno, aby umozliwic wytlaczanie helmu z wysokim naglów¬ kiem, daszkiem na oczy i ochraniaczem karku, bez pekania i faldowania. Wyrób helmów z jednego kawalka ma jeszcze te zalete,ze powieksza skutek ochronny, gdyz nie posiada wystajacych szwów lub nitów i t. p, co ulatwia odbicie pocisków od hel¬ mu.Helm wytloczony podlega nastepnie har-towaniu i przy uzyciu blachy o grubosci 1,0 mm daje zupelna ochrone przeciw ku¬ lom szrapnelowym, nawet z najblizszej odleglosci, a takze nieosiagnieta dotad o- slone przed odlamkami granatów.Odpowiednim materjalem jest chromo- wo-niklowa stal. Do wykonania ksztaltu helmu moze byc uzyta kazda ciezka prasa ciagowa z trzymadlami naciskowemi. O- stateczna forme osiaga sie przez kilkastop- niowe tloczenie, przyczem moze byc po¬ trzeba siedmiokrotnego tloczenia i wiecej.Ksztalt podlugowaty nadaje sie albo na sa¬ mym poczatku, albo dopiero przy konco¬ wych tloczeniach.Przeciecie helmu i rzut poziomy przed¬ stawia rysunek. PL PLThe effort to produce iron helmies in order to obtain complete protection against shrapnel balls and a high degree of safety against grenade fragments has led to the production of helms from ordinary and unhardened iron manganese sheets; the task was not solved, however. The difficulty is that a number of conditions must be met simultaneously, both for the production and use of helm. For use, it is required that the helm covers those parts of the head which require protection, that it has sufficient thickness against the action of projectiles, and at the same time - low weight. For the workmanship it is important that the whole helm is made from a single piece of sheet metal by cold pressing. * Low weight requires the use of thin sheets, and the same use of high-grade hardened steel grades. The production of helms from these noble steels by means of stamping, especially if the helm is to have an eye visor and a neck protector in addition to the headband, presents considerable difficulties, mainly due to the high strength (80 kg / mm2) of these steels, already in annealed state. trials have shown that certain grades of steel have sufficient cold-forming ability to enable the extrusion of helm with a high header, visor and neck protector without cracking or creasing. The production of helms from one piece has the advantage that it increases the protective effect, because it has no protruding seams or rivets, etc., which facilitates the deflection of projectiles from the helm. The embossed helm is then toughened and using a sheet of thickness 1 .0 mm gives complete protection against shrapnel balls, even from the shortest distance, and also hitherto unattainable from grenade fragments. A suitable material is chrome-nickel steel. Any heavy drawbar with pressure clamps can be used to make the helm shape. The final form is achieved by several steps of pressing, or perhaps you need seven times or more. The elongated shape is suitable either at the very beginning or only at the end of the embossing. Helium cutting and the horizontal projection show drawing. PL PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL693B1 true PL693B1 (en) | 1924-10-31 |
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