Carbon tool steel 
 Use 
 Feature 
 Carbon tool steel heat treatment T10 
 Common instrumentation normalizing annealing tempering ordinary quenching and tempering purposes 
 Feature 
 Carbon tool steel heat treatment T10 
 Common instrumentation normalizing annealing tempering ordinary quenching and tempering 

 Use 
 For the production of cutting tools, dies and measuring the carbon steel. Compared with the alloy tool steel, the machinability, low cost, using a wide range of tools for the production of it in a larger amount. Carbon tool steel cutting tool is divided into carbon steel, carbon tool steel and carbon steel gauge. Means for the production of carbon steel cutting tool cutting tool carbon tool steel, carbon tool steel for the production of means of cold and hot processing mold carbon tool steel, carbon steel measuring means measuring tools for the production of carbon tool steel . Such steels are generally annealed state of delivery, according to the demand side, demand may not annealed state delivery. Annealed steel hardness, fracture tissue, mesh carbide, pearlite, quenched sample hardness, hardenability depth and the depth of decarburization of steel surfaces shall comply with the provisions of China's national standard GB1298. Steel mesh in the presence of such carbides and lamellar pearlite, prone to deformation hardening, cracking and uneven hardness, wear resistance and reduce the cutting tool, cutting tool prone to chipping, reduce cutting tool life. In order to prevent the generation of network carbide, steel forging to be repeated, rapid cooling after forging. Annealing can through the ball lamellar cementite in the pearlite spheroidization. General use of such steel quenching salt bath furnace, which prevent or reduce the tool surface decarburization. In the quenching should be taken to avoid deformation and cracking, for general use classification quenching or austempering, some high frequency quenching. Time after quenching and tempering, when parked to prevent deformation or cracking. 
 Feature 
 Carbon tool steel production costs are lower, convenient source of raw materials; easy to cold, heat processing, heat treatment is given to very high hardness; heat is not high in the work situation, good wear resistance, and thus widely used. Among them, the high toughness of high quality carbon tool steel, get a higher finish grinding, suitable for manufacturing complex shapes, high precision tools. However, such poor red hardness of steel, the working temperature exceeds 250 ℃ after the hardness and wear resistance decreased rapidly. Such low-hardenability steel, tool section size greater than 15mm, the water quenched surface layer only to get high hardness, it can not expand the size of tools. Such a narrow range of steel quenching temperature, overheat, quenching distortion and cracking tendency of large, soft and easy to produce points. Compared with the alloy tool steel, these steel hardenability is low, the water quenching diameter of 15mm, and in the oil quenching diameter of only 5mm. In addition, such a rigid steel heat low, the working temperature higher than 250 ℃, the hardness and wear resistance of steel fell sharply, thus cutting steel capacity significantly reduced, so is only suitable for the production of such steel small size, simple shape, cutting speed is low, a small amount of feed, operating temperature is not high tool. The scope of such carbon content of steel is 0.65% ~ 1.35%. China's national standard GB1298-77 in a total of eight grades of carbon tool steel. T7 which a low-carbon steel with good toughness, but not high wear resistance, suitable for the production of cutting tools and cutting soft materials to withstand shock loading of tools, carpentry tools, sickle, chisel, sleeping child, etc. T8 steel has good toughness and high hardness, suitable for making punch, scissors, can also be made woodworking tools. Higher levels of manganese steel hardenability T8Mn good, suitable for production of large woodworking tool fracture, with coal chisel, masonry chisel and a small hand saw blade deformation demands, stripes rasp. T10 steel wear better, wider range of applications, suitable for production of cutting conditions are poor, higher wear resistance of metal cutting tools, and Die with and measurement tools such as lathe, planer, milling, rubbing wire board, drawing dies, tap chisels, calipers, and plug and so on. T12 steel, high hardness, good wear resistance, but the toughness is low, can be used to make from the impact, requiring high hardness, good wear resistance cutting tools and measuring tools such as scrapers, drills, reamers, reamer, tap, die, and micrometer and so on. T13 tool steel carbon steel is the highest carbon content of steel, its hardness is high, but the toughness is low, can not withstand the impact load, is only suitable for cutting high-hardness materials production and processing of hard rock cutting tools, such as the rasp, carved knife, wire drawing dies, engraving tools. Edit this paragraph T10 carbon tool steel heat treatment process 
 T10 is the most common form of carbon tool steel, toughness, moderate, low production costs, heat-treated to achieve hardness above 60HRC, however, the hardenability of steel is low, and poor heat resistance (250 ℃), used for manufacturing Hand tools and other simple tools. Here's a brief introduction T10 heat treatment process: 
 Common Instrumentation 
 Thermoelectric thermometer, the temperature box resistance furnace. 
 Annealed 
 Heating temperature of 760 ~ 780 ℃, furnace cooling. After annealing, the hardness of steel is substantially reduced. 
 Normalizing 
 Heating temperature of 820 ~ 840 ℃, air cooling. 
 High-temperature tempering 
 Heating temperature of 650 ~ 700 ℃. 
 Quench 
 Quenching medium: oil, heating temperature: 790 ℃, hardening methods: For small straight blade of the type generally perpendicular to slow down. 
 Tempering 
 Temperature 150 ℃, hardness 62HRC, but easy to chipping; generally use temperature 200 ~ 250 ℃ ~, hardness 55 ~ 60HRC. These are generally plants of the T10 heat treatment process conditions. Because the security broadsword generally carried out in the cottage, there is little instrumentation, mainly visual and Cutler have to rely on the experience.