High Speed Alloy Tool Steel Hob Made In Zhuzhou, China
Differences between cemented carbide steel and high-speed
steel:(Supplementary Instructions)
Three, different classification
1. Cemented carbide classification
(1) Spheroid
Cemented carbide balls are mainly composed of carbides (WC, TiC)
micron powders of high hardness refractory metals. Common cemented
carbides include YG, YN, YT, YW series.
Commonly used cemented carbide balls are mainly divided into: YG6
cemented carbide balls. YG6x cemented carbide balls. YG8 cemented
carbide balls. YG13 cemented carbide balls. YG20 cemented carbide
balls. YN6 cemented carbide balls. YN9 cemented carbide balls .YN12
Carbide Ball. YT5 Carbide Ball. YT15 Carbide Ball.
(2) Rod-shaped body
The main features of cemented carbide rods are stable mechanical
properties, easy welding, high wear resistance and high impact
resistance.
Carbide rods can be used not only for cutting and drilling tools
(such as micron, twiste drills, drills for vertical mining tool
indicators), but also as input pins, various roll wear parts and
structural materials. In addition, it can be widely used in many
fields, such as machinery, chemical, petroleum, metallurgy,
electronics and defense industries.
(3) Plate body
Carbide plate, with good durability and strong impact resistance,
can be used in hardware and standard stamping dies. Carbide plates
are widely used in the electronics industry, motor rotors, stators,
LED lead frames, EI silicon steel sheets, etc. All cemented carbide
ingots must be inspected strictly and only those without any
damage, such as pores, air bubbles, cracks, etc., can be shipped
out.
2. Classification of high-speed steel
(1) High-speed steel is classified according to the alloying
elements it contains
① Tungsten series high-speed steel (containing 9-18% tungsten);
② Tungsten-molybdenum high-speed steel (containing 5-12% tungsten
and 2-6% molybdenum);
③ High-molybdenum high-speed steel (0-2% tungsten, 5-10%
molybdenum);
④ Vanadium high-speed steel is divided into high-speed steel with
general vanadium content (containing 1-2% vanadium) and high-speed
steel containing vanadium (containing 2.5-5% vanadium) according to
the content of vanadium;
⑤ Cobalt high-speed steel (containing 5% of cobalt) ~10%).
(2) High-speed steel is classified according to different uses
① Universal high-speed steel: It is mainly used to manufacture
cutting tools (such as drills, taps, saw blades) and precision
tools (such as hob, gear shaper, and broach) for metal materials
with a cutting hardness of HB≤300. The commonly used steel grades
are W18Cr4V, W6Mo5Cr4V2, etc.
② Special-purpose high-speed steel: including cobalt high-speed
steel and super-hard high-speed steel (hardness HRC68-70), mainly
used to manufacture tools for cutting difficult-to-machine metals
(such as superalloys, titanium alloys and high-strength steels,
etc.), commonly used steel grades There are W12Cr4V5Co5,
W2Mo9Cr4VCo8 and so on.
Small modulus carbide solid gear hobbing cutter:
Application industry
Auto parts: wheel drills, rivet hole drills, decorative drills,
etc.;
Steam turbine field: Christmas tree milling cutter, profile tool,
blade root blade processing tool, etc.;
Aero-engine field: small modulus gear shaper, machining titanium
alloy, superalloy tool, etc.
Cemented carbide inserts are made of cemented carbide, which is an
alloy material made of hard compound of refractory metal and
bonding metal through powder metallurgy process.
Cemented carbide has a series of excellent properties such as high
hardness, wear resistance, good strength and toughness, heat
resistance and corrosion resistance, especially its high hardness
and wear resistance, which remain basically unchanged even at a
temperature of 500 °C , still has high hardness at 1000℃
Cemented carbide inserts are mainly made of solid carbide as the
base body, and are processed through multiple production processes.
Cemented carbide, also known as tungsten steel, is made of
high-quality tungsten carbide + cobalt powder after mixing by
formula and sintering. It has high hardness, high strength, high
wear resistance and high elastic modulus. It belongs to the powder
metallurgy industry. . As the teeth of modern industry, carbide
cutting tools play a fundamental role in promoting the development
of the manufacturing industry.
Cemented carbides can be divided into ordinary cemented carbides,
fine-grained cemented carbides, sub-fine and ultra-fine grained
cemented carbides, and newly introduced twin-crystal cemented
carbides. According to the main chemical composition, it can be
divided into tungsten carbide-based cemented carbide and titanium
carbide-based cemented carbide. Tungsten carbide-based cemented
carbides include tungsten-cobalt (YG), tungsten-cobalt-titanium
(YT) and added rare carbides (YW). The commonly used metal bonding
phase such as Tic) and niobium carbide (NbC) is Co. Titanium
carbide-based cemented carbide is a cemented carbide with Tic as
the main component, and the commonly used metal bonding phases Mo
and Ni. Cemented carbide has high hardness (86~93HRA, equivalent to
69~81HRC), second only to diamond, good hot hardness (up to
900~1000℃, maintaining 60HRC); high flexural strength (MPa5100),
good impact toughness and chemical inertness with extremely high
corrosion resistance and other characteristics that ordinary alloy
blades do not have.
