You will need
  • - knife for quenching;
  • - muffle oven;
  • the oil (antifreeze, automobile engine oil, testing);
  • - material for polishing, chrome-plating steel.
Instruction
1
Preheat muffle furnace to a temperature of 1030-1050°C. once onepiece to reach the required temperature, soak it in the on position, the hour and turn off. The temperature in the furnace should be strictly up to 1100°C, or when the calcination will undergo an irreversible process of consolidation sorbitol steel structure. It becomes viscous and loses its impact properties.
2
Place the knife blade in the oven. You must first remove the handle, high temperature, almost 100% deform the material of the handle. Time for a high holiday of the blade is calculated as 10 minutes per 1 mm thickness. Visually determine the degree of calcination by the color of the blade. It needs to be the same as the color of the inside of the furnace.
3
Remove the blade from the furnace and vertically immerse it in a container of oil, slightly ' s along the blade to the profile of the blade does not lead from excessive pressure on the soft hot steel.
4
Having waited until the steel temperature falls to 300°C (bluish color on the steel surface), place the blade in the muffle furnace, the pre-exposed temperature of 200-300°C. the Process low vacation should last 3-4 hours.
5
Remove the blade from the furnace, if necessary, send it, let it cool in a natural environment outdoors.
6
Polish, othererwise, sharpen the blade, attach it to the handle.