Your question is too wide. Because for many tool materials (such as T8 and T10 carbon tool steel alloy tool steel; there are dozens of commonly used, such as W18Cr4V, W18Cr4V2, 9CrSi), and the tool and sub industry and civil use etc.. Different materials have different heat treatment processes. There is no one here.
If your tool is used in the daily life of the family, here are some suggestions:1, use your iron tapping tool, a sound and sound hum for a long time, your tool has higher carbon content (carbon content in 5/1000~8/1000). Otherwise, such as sound and sound and soon disappeared, and that the tool is very low carbon content (0.8/1000~2/1000), at this time, you do not need to heat treatment, heat treatment can not be normal because of the material change.2, prepare a ~20Kg can contain water wide mouth containers (according to the size of the opening and the depth of your tool size and determine the length of the container), the water temperature is 35 DEG ~50 DEG (water quenching medium had a lot of good, but you don't necessarily have the water, is the quenching medium, cheap water for heating the tool to prevent serious deformation and excluded) poured into containers (with 20~30mm filled).3, your tool blade (blade in the range of ~40mm) is heated to appear incandescent color (about 820 DEG ~850 DEG, because you don't necessarily have the thermometer, so use color to judge the temperature), quickly after you get ready for the 35 straight down into the water of ~50 DEG C, and immediately on the vertical under water sports (you don't move a tool sideways in the water movement, this is to prevent the deformation) about 4~7 seconds (such as cutting edge thickness is 0.5~2mm (or you) feel the tool vibration disappeared; or listening to the water sound disappeared), presents a tool.4, the tool immediately on the flame (note, not in the fire) to bake at 120 degrees C ~150 C (small splash of water splashed on the tool immediately jump boiling), and then natural cooling can be.
If you want to get a good tool, you should choose a good material, get the normal heat treatment plant to heat treatment.The purpose of heat treatment is by changing the internal structure of materials (such as tool steel: pearlite and cementite (or) (by heating and fast cooling) and martensite (low temperature tempering), tempered martensite), achieve the desired performance.In general, the performance of the alloy tool steel after heat treatment is better than that of carbon tool steel after heat treatment. Alloy tool steel, the number of alloy elements, different varieties, heat treatment performance is also different.
