2014年(381)
分类: DB2/Informix
2014-06-20 19:57:57
Flexural strength "Solid carbide drills" with high and very
good wear resistance, high hardness, wear resistance, strength and toughness,
heat resistance, corrosion resistance and a series of excellent performance
tungsten steel, ""is a major composition of the powder product with a
hard phase and binder. For example, some high-speed steel and hot work die
steel, steel containing tungsten steel hardness and heat resistance have a very
significant improvement, but the toughness will be a sharp decline. Is the
temperature of the metal. "Solid carbide drills" also inherited
the excellent characteristics of tungsten. Done by turning ordinary carbon steel
is heated to above 250 ℃ has softened, and naturally can not cut metal up.
However, do tungsten steel turning, temperatures up to 1000 ℃, still hard as
before. Tungsten steel drill bit can cause holes in the workpiece or
rocks.
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