i AM NOT SURE LALALLALALLALALAL
Gareth O'Rourke has written: 'The cryogenic heat treatment of tool steels' -- subject(s): Heat treatment, Tool-steel, Low temperature engineering
You need to use a themometter
a fire
a thermometer
Heat is insulation's big enemy.
Sheknows Beyoutiful - 2011 Heat Tool Junkie Before 2-5 was released on: USA: 11 November 2011
Heat treating of tool steel is a fairly simple process. Precautions must be taken to protect the tool steel from exposure to oxygen. Tool steels are susceptible to decarburization due to their relatively high heat treating temperature. Stress relieving of the tool steel may be necessary, especially if the tools are complex in design or have been heavily machined. Preheating may be required to reduce the chance of cracking or distortion. The tool steel is generally heat treated between 1500 and 2200F, depending on the grade of tool steel. The tool steel is held at the austenizing temperature longer enough for the elements to be dissolved into solution, then the tool steel is quenched. Quenching can be performed in air, water, oil or vacuum. The quenching medium is determined by the required quench rate and alloy content of the chosen grade. After quenching, the tool steel must be tempered. Tempering is usually perfromed between 350 and 1200F.
Too low and the tool digs in to the material causing chatter. too high and the tool rubs on the materials creating heat and needs excessive force to promote a cut.
S7 tool steel is produced and supplied to the machinist or tool maker in the annealed or soft condition. S-7 is typically heat treated and used in the Rockwell C hardness range of RC 54-59. Form more specific information about S-7 tool steel and heat treating, see the related links below.
Anemometer
it's called condensation, when the kettle is running and it's near a window you can see the heat on it. you are the tool no metals needed