Feodossieff's new method of tempering and hardening steel for cannon and projectiles
β Scribed by Smith, Watson
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1890
- Weight
- 491 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0368-4075
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β¦ Synopsis
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ind Iiiis siiccecdcd in teiiipcrii!g iicery projectiles, iiriiioiirilatc iiiiil riiil\v:iy tyrcs by 111s glyceriii :iroccss, iiiid hiis htiiiiicd rcry siitisfiictory rcsiilts. I Iinrc now nuicli ileiisiirc iii csliiliitiiig sonic slieciiiiciis of steel trc:itcd by ~?codossicff's proccss. Tlic first is 11 4-iiicli cast-stccl ingot ivliicli Iiiitl Iiccii in:itlc red hot iiiid tlicn iiiiiiicrectl iii glycerin. hi csiiiiiiiiiitioii of tlic iippcr ~inrt of it will diow t h t ii pcciiliiir sliriiikiigc Iiiis t:ikcii ~iliicc, which proves tliiit tlic iii~jtiil hiis riot bceii forgetl. This ingot, sent nie by Cn1it:iiii rcodossicff froiii St. l'ctcrsliiirg for csliibitioii with tile Dtlicr slicciiiiciis iit this iiicctiiig, wis s!icciiilly sciit for tlic 1iiirposc of slio~viiig 11s tliiit the qi~~ilitics of tlic iiietii: ittc ilcrivcd froiii tlic iiiiiiiiicr of 1i:irileiiiiig iiiid not froiii forging.
S~icciincii So. 2 is ii 1i:irt of tlic siiiiic ingot iis So. 1, but which Iiiis Iiccii forged, i:iiscil to :I low Iieiit tirid tlieii pliiiigcctl into glyccriii. After cooliiig it wiis Iient ;it iiii iiiiglc of 180'. l'lic tciisilc streiigtii of this piece of iiiiiiciilcd steel is 65 toiis, eloiiptioii 11 to 18 1icrceii1. 'J'licspeciiiieii liefore 11s wiis Iicnt cold. Slieciiiicii So. 3 is of forgctl stccl, tciiiliereil iii glyccriii. All tlircc pieces iiow csliibitcd, Sos. 1, 2, niiil :I, iire fr:igiiiciits of tlic ~i i i i i c 4-iiicli iiignt.
Wit11 rcpiril to tlic speciineii 0, which rriis Iiciit iipii itself cold, iiiiiilysis proved it to Iiiivc tire foIlu\viiig coiiipositioii : ciirlioii, 0 . i per cciit.; cliroiiiiiiiii, 2.2 Iier cciit.; tint1 silicoii, 0 -15 per ceiit. Ciiptiiiii I'cotlossictf hiis cspcriiiiciitcd with iiiiforgctl cast-steel l!?-iiicIi projectiles. Oiic
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