Carbide rod is a tungsten steel round bar, also known as tungsten steel bar. In short, it is tungsten steel round bar or cemented carbide round bar. Cemented carbide is a composite material composed of refractory metal compound (hard phase) and bonding metal (bonding phase) produced by powder metallurgy.
Carbide rods is mainly used for drill, end mills. It can also be used for cutting, stamping and measuring tools. It is used in papermaking, packaging, printing, non-ferrous metal processing industries.
In addition, it is also widely used for machining high-speed steel cutting tools, carbide milling cutters, carbide cutters, NAS cutting tools, aviation cutters, carbide drills, milling cutters, coring drills, high-speed steel, taperd milling cutters, metric milling cutters, micro end milling cutters, hinge pilot, electronic cutters, ladder drills, metal cutting saws, double guaranteed diamond drills, gun-barrel, angle milling cutters, Cemented carbide rotary file, cemented carbide cutting tool, etc.
Grade of tungsten carbide rod application recommendation:
Grain Size (um)
Used for making general purpose drills and endmills, especially for common alloy steel (HRC < 50), grey cast iron, heat-resistant alloys etc.
Used for making general purpose drills and endmills, especially for heat-resistant alloys, stainless steel, cast iron etc.
Widely used in punch, pin, forming mandrel, powder metallurgy core, mandrel etc.
Commonly used grades of tungsten carbide rods:
Equivalent to ISO
Bending strength is not less than (N/cm²)
Hardness not less than HRA
Physical and mechanical properties & Recommended use
It is suitable for high-speed finishing of small cutting sections of cast iron, non-ferrous metals and alloy hardened steel alloy steel.
It is suitable for semi-finishing of hard cast iron, non-ferrous metals and their alloys, as well as semi-finishing and finishing of high manganese steel, quenched steel and alloy steel.
It has been proved by production and use that the alloy can obtain good results when processing chilled alloy cast iron and heat-resistant alloy steel, and is also suitable for the finishing of ordinary cast iron.
It is suitable for processing integral alloy drilling, milling, reaming and other metal cutting tools. Has high wear resistance and toughness.
It is suitable for the second half of finishing with medium cutting speed of cast iron, non-ferrous metals and alloy non-metal materials.
Suitable for fine turning in continuous cutting of cast iron, non-ferrous metals and their alloy non-metallic materials, semi-finishing turning, finishing turning, small turning finishing, rough turning thread, semi-finishing and finishing milling of continuous sections, holes in discontinuous cutting, holes Rough expansion and precision expansion.
Suitable for high-speed cutting of cast iron, white cast iron, nodular cast iron and alloy materials such as chromium and nickel stainless steel.
It is suitable for rough turning, rough planing and rough milling of uneven sections and intermittent cutting in the processing of cast iron, nonferrous metals and their alloys and non-metallic materials, drilling and reaming of general holes and deep holes.
It is suitable for manufacturing fine-diameter micro-drills, end mills, rotary files, etc.
It is an ultra-fine grain alloy, suitable for low-speed rough turning, milling of heat-resistant alloys and titanium alloys, and is particularly suitable for cutting cutters, taps, and saw blade milling cutters.
It has good wear resistance and flexural strength. It is mainly used for the production of extruded bars and is suitable for wear-resistant parts such as general drills and cutters.
It has good wear resistance and bending strength. It is mainly used to produce extruded bars, make small-diameter micro drills, cutting tools for clocks and watches, integral reamers and other cutting tools and wear-resistant parts.
It is suitable for upsetting, piercing and punching tools for steel rod and steel tube drawing under high compression ratio and working under large stress.
Suitable for making stamping dies, such as stamping watch parts, musical instrument springs, etc .; stamping dies for punching battery shells, toothpaste skins; stamping dies for small-sized steel balls, screws, nuts, etc .; and hot-rolled twist drill press plates.
Tungsten carbide rods with coolant holes carbide
Solid carbide rods carbide round bar with grinding or blank finishing
High precision tungsten carbide drill rods for drill bits and reamers
Extruded tungsten carbide rods blanks for gun drills
The ball grinding mill can make all fine and ultra-fine grain size powder uniform.
2.Drying and granulating
We use spraying prilling tower to ensure the purity of the material.
The carbide rods blanks are pressed by the pressing machine to a uniform density and no defect.
4.Pressure Sintering Furnace
The pressure sintering furnace is applied to provide more pressure during the sintering process in order to obtain a denser structure.
5.Cutting and Precision Grinding
We use advanced grinding machine to grind the carbide rods as customers’ requirements.
Tungsten steel rods are widely used as materials, such as milling cutters, planers, drills, boring cutters, etc., for cutting cast iron, non-ferrous metals, plastics, chemical fibers, graphite, glass, stone and ordinary steel, and can also be used for cutting Heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult-to-process materials. Tungsten steel can also be used to make rock drilling tools, mining tools, drilling tools, measuring tools, wear-resistant parts, metal abrasive tools, cylinder linings, precision bearings, nozzles, etc.
Features of tungsten steel round bar:
Use high-quality ultra-fine tungsten carbide and imported cobalt powder as raw materials.
It has high strength and high hardness.
It has excellent red hardness, good wear resistance, high elastic modulus, high bending strength, good chemical stability (acid, alkali, high-temperature oxidation), good impact resistance, low expansion coefficient, thermal conductivity, electrical conductivity and Feature similar to iron and its alloys.
High-tech precision advanced equipment: 10MPa low pressure sintering furnace imported from Germany for sintering.
Unique new technology: vacuum high temperature and high pressure sintering. The product adopts pressure sintering in the final stage, which greatly reduces the porosity, improves the compactness, and greatly improves the mechanical properties of the product.
Product features: There are many material grades, which can be applied to the needs of different uses; the specifications are complete, and the blank size is accurate (reduce the processing volume and improve the production efficiency).
Which occasions are cemented carbide rods suitable for?
The main uses of cemented carbide bars are:
Cemented carbide bars are suitable for micro-drilling.
Cemented carbide bars have good wear resistance and bending resistance. They are mainly used to produce extruded bars, suitable for general drills, knives and other wear-resistant parts.
Cemented carbide bars have good wear resistance and bending resistance. They are mainly used to produce extruded bars, making small-diameter micro-drills, cutting tools for watch processing, integral reamers, and other cutting tools and wear-resistant parts.
The cemented carbide rod is an ultra-fine particle tungsten steel material. This tungsten steel rod has the characteristics of high hardness, good bending strength, wear resistance, not easy to collapse, and not easy to break. It is a special material for micro drills, widely used in tungsten steel milling cutters, engraving knives and wear-resistant parts.
How to cut tungsten carbide rods?
Tungsten carbide rod is a material with high hardness, which is difficult to achieve by other mechanical processing methods. Wire cutting is more suitable, but due to the unevenness of the “internal energy” of the cemented carbide, especially large cemented carbide, It is easy to produce cracks during processing. So how to avoid this situation?
From the perspective of producing tungsten carbide blanks, when sintering large cemented carbides and subsequently performing wire-cutting of carbide blanks, the heating and cooling rates should be slowed down and extended as far as possible within the permitted technical range High temperature holding time;
From the perspective of the processor, it is recommended to allow the Tungsten Carbide Rods to age naturally in the open air or indoor floors for a period of time. It is recommended to avoid using sintered materials for 1 to 2 months. Conditional units can also perform cold treatment on cemented carbide (0 ℃ ～ 10 ℃);
Before machining, it is necessary to rough grind the cemented carbide, and then cut it for a few days; if it can be rough ground before natural aging, it is more stable.
In short, the main point is to release the internal energy [stress] of the cemented carbide as far as possible to the minimum to prevent it from forming a destructive force.
Wire cutting hard alloy molybdenum wire is easy to break
Regarding the problem of wire cutting and cutting of hard alloy molybdenum wires, we need to start with adjusting various parameters of wire cutting machine tools.
Replace with new guide wheels and conductive blocks;
Replace the wire cutting fluid with new ones. When wire cutting Carbide Rods, there are too many electro-corrosives. It is easy to reduce the chip removal effect of the wire cutting fluid. You can replace the wire cutting fluid with a new one in advance and improve it appropriately. The proportioning concentration of wire cutting fluid. In addition, it is also possible to choose a water-based cutting fluid such as a wire cutting working fluid with good chip removal performance;
The machine parameters should be stable, the wire cutting molybdenum wire should not be too tight, and the wire rack should not be too high! The speed cannot be too fast. If it is hl, the frequency conversion of the system must be stable! In terms of current, keep 2.5A. Be careful not to exceed 3A. Amplify the pulse width and pulse width.
What products are carbide rods mainly used for?
Carbide rods are mainly suitable for drills, end mills, and reamers. It can also be used for cutting, punching and measuring tools. It is used in the paper, packaging, printing, and non-ferrous metal processing industries.
In addition, it is also widely used for processing high-speed steel tools, carbide milling cutters, carbide cutters, NAS cutting tools, aviation tools, carbide drills, milling cores, high-speed steel, tapered milling cutters, metric Milling cutters, miniature end mills, ream pilots, electronic cutters, step drills, metal cutting saws, double guarantee gold drills, gun rods, angle cutters, carbide burrs, carbide cutters, etc.
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