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เนื้อหาย่อ : Contents SSEIET FORGES 8 Shop and 10 mid's Fire 11 rh's Vise 13 Bacomith 15 Coal 16 hr Qucaching Liquids 16 r Tools 17 CAL STEEL-CUTTING 凉 ABRASIVE CUTOFF CUTOFF DISCS 17 WTOR GRINDER 18 BURFER AND THE ROTARY THE DOUBLE- USING THE DRILL NOCD LATHE 19 Bady Motions Hummering 20 Dipper 12 Exercises 26 adound Bar 26 d a Souaned Rod 28 d a Spuare Rod Settion 28 4. Upsetting Steel 29 Upsetting a Rod End To Form a Bolt Head 29 Use of the Upsetting Block To Form a Bar Tool 30 Forging a Hexagon Bolt Head 3 1 Correcting Upsetting Errors 32 5. Upsetting with the Aid of an Upsetting Matrix 33 Making an Upsetting Matrix 33 Upsetting Steel into Bolt Heads with an Upsetting Matrix 34 Making a Carriage Bolt Heading Plate and Decorative Bolt Heads 35 6. How To Temper and Harden High-Carbon Steel 36 First Method of Tempering 36 THE FILE-TIP TEST FOR HARDNESS ERABILITY 36 AND TEMPI Second Method of Tempering 37 Third Method of Tempering 38 Drawing Temper Color 38 Quenching Liquids 38 EFFECT OF QUENCHING LIQUIDS ON HOT STEEL 38 7.Making a Right-Angle Bend 40 Making a Jig To Forge a Right-Angle Bend 42 A Right-Angle Bend Using Vise and Jig 43 Making a Right-Angle Bend in a Mild-Steel Angle Iron 44 Making a Right-Angle Bend in a High-Carbon-Steel Angle Iron 44