Several kinds of measuring tools and their properties and uses
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Performance: Commonly used low alloy tool steels with high hardenability, hardenability and tempering stability. Suitable for graded quenching and austempering, heat treatment deformation is small.
Uses: Used to manufacture tools with complex shapes, small deformation, high wear resistance and low speed cutting, such as drills, thread tools, dies, taps, reamers, reed plates, rolling wheels, gear milling cutters, and machine dies , printing molds and other molds, also used in the manufacture of cold roll, calibration roller and slender parts.
Production varieties: hot-rolled materials, forging materials, cold-drawn materials, hot-rolled steel, cold-rolled steel wire, bright silver wire.
8MnSi
Performance: It is based on the increase of silicon and manganese content on the basis of carbon tool steel T8. As the silicon and manganese content is increased, the hardenability of the steel is improved.
Uses: Used to make wood tools, such as chisels, saw blades and other tools, but also for saw blades, inserts, etc.
Production varieties: hot-rolled materials, forging materials, cold-drawn materials.
CrO6
Performance: low alloy measuring tool steel with a small amount of chromium, after the heat treatment to obtain higher hardness and wear resistance. Due to the high carbon content, it is easy to form network carbides, which affects their performance. In particular, tools with large cross-sections, especially those with thin blade and large cross section, are more brittle.
Uses: Used for the manufacture of low-load operation, but also require cutting edge sharp tools, such as surgical tools, shave blades, razors, carving knives, trowels, scrapers, wool scissors and other manual and motorized knives.
Production varieties: hot-rolled materials, forging materials, cold-drawn materials, hot-rolled steel, cold drawn steel wire, silver bright steel wire.
Cr2
Performance: Chrome-containing gauge steel is made by adding a certain amount of chromium to the carbon tool steel T10. Its chemical composition is similar to ball bearing steel GCrl5. Due to the inclusion of chromium, the hardenability and hardness of the steel are higher than that of the carbon tool steel T10, and the dimensional change during heat treatment quenching and tempering is not large.
Uses: used for the manufacture of measuring tools, such as templates, gauges, block gauges, ring gauges, threaded plug gauges, sample posts, card plates, sample holders, etc., can also be used to make cold die for drawing die and cold die, and low speed, Cutting tools with small amounts of cutting and hard machining materials, such as turning tools, inserting tools, reamers, cam pins, eccentrics, and cold roll.
Production varieties: hot-rolled materials, forging materials, cold-drawn materials, hot-rolled steel, pull wire.
9Cr2
Performance: The chromium content of a cutting tool steel, because it contains a certain amount of chromium, improves the hardenability of the steel, even if the quenching in the oil can also get a higher hardness, after appropriate heat treatment, with good wear resistance, carbonization The material distribution is relatively uniform.
Uses: used to make cold tooling, stamping die punch and die, stamping die, ether woodworking tools, etc., also used in the manufacture of cold roll and calender roll.
Production varieties: hot-rolled materials, forging materials, cold-drawn materials, hot-rolled steel, cold-rolled steel wire according to the demand side can supply small and medium-sized modules.
W
Performance: Measuring tool containing 0.80% ~ 1.20mm% (mass fraction) of cutting tool steel, after quenching hardness and wear resistance than carbon steel tool steel, thermal sensitivity than carbon tool steel is low, heat treatment deformation is also smaller , It is not easy to crack when quenched in water, and the tempering stability is better. Due to its low hardenability, it is generally used only for the production of tools with small cross-sections. Generally, parts with a thickness of 10 mm to 15 mm can obtain uniform high hardness, and its hardness is HRC64~66.
Uses: Used for manufacturing tools with small cross section, such as small twist drill bits, and cones, dies, and manual reamers that do not have high cutting speed and low working temperature.
Production varieties: hot-rolled materials, forging materials, cold drawing materials cold, pull steel wire, silver bright steel wire.