... HARDENING ACID BESSEMER PROCESS TRANSVERSE 60 CORRESPONDENCE OSNTEEL RAILS. [Minutes of &lrF.raser. Correspondence. Mr. W. A. FRASErRemarked thatthePaper led tothe general conclusion that the usual specifications and tests were not sufficient t o produce the hardest-wearingrails unless special...

... onshrinkage and plastic yield. If the shrinkage was due merely to drying out revcrsibly (as of aninert material like porous brick), wetting should remove it, and that part of the deflection which was due to shrinkage should disappear. If, on the other hand, shrinkage was due to hardening (an irreversible...

...R H GREAVES; W H HATFIELD; V E GREEN; J C W HUMFREY; E H SANITER; SIR R HADFIELD; W C UNWIN; E H LAMB; SIR W ELLIS; T E STANTON; R G C BATSON © Thomas Telford and ICE 1921 NOTCHED BAR NOTCHES BARS IMPACT TESTS DISTRIBUTION STRAIN HARDENING TESTING PIECES MATERIALS TOUGH...

... of academic ratherthan of practical importance ; practicallythefundamentalawsgoverningthe operations of hardening, tempering and letting down, were fairly well known. To take the simplestexample, iron containing 0 . 9 per cent. of carbon consisted entirely of the compound constituent, pearlite (21Fe+Fe,C...

...D CARNEGIE © Thomas Telford and ICE 1903 MANUFACTURE EFFICIENCY ARMOUR PROJECTILES WEAPONS SHOT SHELLS CAST STEEL FORGING CASTING HARDENING TESTS CAPS AMMUNITION PENETRATION ORDNANCE WAR PIERCING DESIGN PLATES METALS THE INSTITUTIOK CIVIL ENGINEERS. SESSION 1902...

...SIR B BAKER; T ANDREWS; J E STEAD; R AUSTEN; R A HADFIELD; J HEAD; W ANDERSON; B BLOUNT; A B W KENNEDY; J O ARNOLD; T WRIGHTSON © Thomas Telford and ICE 1896 PHYSICAL PROPERTIES IRON STEEL CRACKS CARBON ANNEALING HARDENED MAGNETISM WELDING TENSILE COMPRESSION TESTS METALS...

... for the hardening of iron-carbon alloys; and had explained the effect of annealing and of mechanicalwork upon metals. He had shown that reduction of grainwasbroughtaboutbyalternation of annealingand mechanical stresses. A clear insight into the nature and origin of Dr. Sorby s pearly constituent had been given...

... in water from a full redheat. Mr. Osmond and ProfR. oberts- Austen therefore stated t,hat the adamantine nature of hardened steelwasduemainly to p iron;thehardness being, however, augmented by the presence of the dissolved atoms of free carbon which acted as a frictional resistance. How or why the atoms...

...H T ASHTON © Thomas Telford and ICE 1893 MANUFACTURE AMMUNITION CARTRIDGES CASES GUNS RIFLES METALS TOOLS HARDENING MACHINES MACHINERY IGNITION PROJECTILES BULLETS FIXED CHARGES EXPLOSIVES DRAWING TAPERING ENVELOPES LEAD CORES ASSEMBLING Papers.] ASHTOMb OODNERN...

...D CARNEGIE © Thomas Telford and ICE 1893 MANUFACTURE EFFICIENCY ARMOUR PLATES STEEL IRON IMPURITIES FURNACES HARDENING TESTS PROJECTILES METHODS WROUGHT MATERIALS NICKEL PROCESS RESISTANCE PENETRATION SHIPS WARSHIPS METALS FORMULAE VELOCITY 352 CARNEGIE...

... WHEELS METALS TENSILE MANGANESE HARDNESS ELONGATION METALLURGY CARBON ANNEALING IRON MILD AXLES INGOTS HARDENING STRAIN TESTS WEAR SOFT ~roeecdings.]DISCUSSION ON STRENGTH OF BESSEMER-STEEL TIRES. 131 Discussion. Mr. E ~ w a n rl b~x s o m s said he had not had any personal experi- Mr...

...H ALLEN © Thomas Telford and ICE 1888 EFFECT ROLLING WIRE DRAWING MILD STEEL RODS EXPERIMENTS HARDENING ELONGATION TENSILE TESTS Papers.] ALLEN ON MILD STEEL. 235 (Paper No. 2263.) The Effect of Rolling and of Wiredrawing upon Mild Steel. By HORACALELENA, ssoc. M. Inst. C.E...

...W ANDERSON; H E ARMSTRONG; W F BARRETT; J A EWING; L GARRISON; W H GREENWOOD; J F HALL; A POURCEL; B M THWAITE; R A HADFIELD © Thomas Telford and ICE 1888 MANGANESE STEEL HARDENING ALLOYS STRENGTH IRON MAGNETISM METALS CARBON PROPERTIES METALLURGY PROPERTIES WIRE ELECTRICAL...

... MANUFACTURING FACTORIES EXPERIMENTS TEMPERING ORDNANCE OIL HARDENING METALS PRESSES FORGING INGOTS ELONGATION SHOCKS CARBON INGOTS FRACTURE SHEARING STRESS TENSILE CRYSTALLINE PROCESS STRENGTH DUCTILITY TUBES STRAIN BREECHES COOLING CASTING Proceedings.] DISCUSSION ON THE TREATMENT...

... INGOTS MANGANESE TENSILE STRENGTH ANNEALING CARBON FRACTURE HARDNESS OIL HARDENING MANUFACTURING MATERIALS ELASTIC LIMITS FORGING PRACTICE ORDNANCE 210 CORRESPONDENCE ON TREATYENT O F GUN-STEEL. [Minutes Of Col. Maitland. they could not be cut in two and put together again. But some...

... tons per square inch in thesoft, or annealed state, and a t about 45 tons per square inch when hardened by being plunged, at a temperature of 1,450°Fahrenheit,into a bath of cooloil. Chemically it contains from 0.25 to 0.5 per cent. of carbon, and from 0 8 t o 0 05 per cent. ofmanganese. Each...

...W C UNWIN © Thomas Telford and ICE 1886 HARDENING CEMENT MORTAR TESTS STRENGTH TENSION SAND FINENESS EQUATIONS BRIQUETTES COMPRESSION RATES PORTLAND NEAT CONSTANTS Papers.] UNWIN ON HTAHREDENING OF CEMENT. 399 (Paper No. 2149.) ( On the Rate of Hardening of Cement...

...C PASLEY; J HAWKSHAW; G F WHITE; GIBBS; GRAVATT; J D HOPKINS; J LOCKE; FRANCIS; R N FITZROY; J M RENDEL © Thomas Telford and ICE 1852 CEMENT ARTIFICIAL HYDRAULIC PORTLAND TRIALS TESTS BEAMS ROMAN STRENGTH ADHESION BRICKS BRICKWORK SETTING HARDENING LIME EXPERIMENTS...

... Hardening that iron could be converted into steel by immersion in pure carbon, as in theMacintosh process, at the rate of 1-30th of an inch per hour. Mr. Roberts stated the success of case hardening depended on the gentleness of the heat. Great care must be taken not to overheat, and case hardening might...

... © Thomas Telford and ICE 1838 IRON TURF FUEL HARDENING METALS 51 malleable. Turf fuel is also used most extensivelyinworkingthe steam engine in many districts of Ireland ; it is used on board the Dunally steamboat, for engines of eighteen horsepower, and theexpense is fourpence per...