News & Events

More and more processing workshops are using solid carbide drills instead of gun drills for deep holes

In the past, the leading drill hole in the deep hole machining tool market, can drill depth of 16-40 times the depth of the hole of the new generation of solid carbide twist drill is occupying an increasing share. In order to improve machining accuracy and chip removal performance, this monolithic carbide bit uses a cross blade and a spiral groove and uses a high density cemented carbide material to increase the hardness so that it can be 5-10 times faster than the gun Speed for drilling.

Some of the overall carbide drill bit manufacturers believe that the performance advantages of such drill bits for those in their own lathes with a gun drill deep hole, or deep hole processing tasks subcontract to the gun drill processing plant manufacturers have more and more Big attraction. However, they also point out that there are some limitations to the overall carbide deep hole drill compared to guns - usually with cemented carbide or hardened high speed steel drill tips, hardened steel shanks and straight grooves. For example, their drilling depth limit (dimension size) is 40 times the aperture, and the gun drill can easily drill holes with depths up to 50 times the aperture.

Carbide products with the progress of their applications continue to expand

Carbide is often referred to as tungsten carbide alloy or simply referred to as tungsten carbide. (WC), which is composed of cobalt (Co), nickel (Ni) and molybdenum (Mo) as binder, and sintered in a vacuum furnace or a hydrogen reduction furnace with a high hardness refractory metal carbide (WC, TiC) Made of powder metallurgy products. Carbide known as "industrial teeth", mainly used for cutting tools, stamping tools, molds, mining and road construction machinery and other fields.

At present, there is no uniform classification of cemented carbide standards, according to the shape of the alloy can be divided into spherical, rod and rod three categories, in general, the industry is usually classified according to alloy composition. According to the use of classification is more dispersed. Carbide has a series of excellent performance, the products are widely used in cutting, address mine, oil extraction, abrasive, structural parts and other fields. In addition, with the progress of the product process its application areas are still expanding.

Carbide composite roll rings are gradually replacing traditional cast iron rolls

From the structural formula of the carbide roll, there are two kinds of solid carbide roll and composite carbide roll. Among them, the whole hard alloy roll has been widely used in high-speed wire rod mill pre-finishing and finishing mills (including reduced diameter rack, pinch roller frame) and so on. Composite cemented carbide roll from the cemented carbide and other materials from the compound, but also can be divided into carbide composite roll ring and the overall carbide composite roll. The carbide compound roll ring is mounted on the roller shaft by mechanical coupling and is used in a small rolling mill, a high line rolling mill, a steel pipe rolling mill, etc.: The solid carbide and the compound roll are directly cast in a roller shaft Forming a whole, applied to the rolling load is very large on the rolling mill.

Application of Carbide Roll in High Speed ​​Wire Production

Carbide roll rings are widely used in high-speed rolling mills. In the high-speed wire rod mill, the roller ring on different racks are subject to different rolling force, rolling torque and wear, etc., corresponding to the use of different carbide grades. Under normal circumstances, the former frame (such as rolling and pre-rolling mill) the rolling load is greater. Require the roll ring has a good toughness and strength, to be selected to the higher content of bonded grades; and after the road rack (such as finishing mill, reduced diameter rack RSM, dual module TMB rack) over a long time, Roller ring has a better wear resistance, to choose the low content of adhesive grades: In particular, finished and finished product before the rack roller ring on the wire surface quality and tolerance have a direct impact, compared with the previous few racks , But also often need to change the roll, for the slot, usually the number of replacement is often a few times the previous frame 2-4 times, its wear resistance often improve the efficiency of the entire mill play a decisive role.

Carbide composite roll ring used in high-speed rolling mill in the rolling frame, instead of the traditional cast iron roll, so that the rolling mill slot life greatly increased by 10-20 times the original, greatly reducing the high-speed rolling mill downtime , To improve the utilization of rolling mill at the same time, so that after the Road Carbide roller ring work status has been greatly improved to extend the life of carbide roller ring to improve the final product quality wire.

Application of Carbide Compound Roll Ring in Small Rolling Mill

Carbide composite roll rings are used in the finishing and rolling mills of small rolling mills, which are used in 2-10 racks at least in two racks and finished products. The best performance and efficiency of the rolling mill, and is conducive to ensuring that the finished rack of the composite roll ring good working conditions, improve the single-slot rolling life and quality of the material.

Carbide composite roll ring groove life is about 10-20 times the ordinary cast iron roll, each grinding is only cast iron roll 1/2 to 1/3, therefore, compared with the traditional cast iron roll, composite roll The total rolling volume of the ring is 20-40 times that of the ordinary roll.

Carbide composite roll ring is widely used, wire, bar, pipe and other small parts, such as square steel, hexagonal steel, flat steel, angle steel and other production can be applied to this technology, the mill performance improvement Have received good results, for example: when rolling 12ram rebar, the carbide compound roll ring rolling capacity of 1,300 tons or more, is the ordinary cast iron roll 180 tons of single-roll more than 16 times; While the grinding amount of 1.5-2.0mm, is cast iron roll 5-6ram 1 / 2-1 / 3. When the rolling of 20 * 3 spring flat steel, the compound roll ring rolling volume of more than 1,000 tons, while the cast iron roll 70-90 tons, a difference of more than 10 times.

The production of auto parts supporting the development of precision carbide saw blade

Saw blade cutter is a commonly used cutting tool, carbide as a typical representative of superhard materials, the cutting performance is other tool materials catch up, especially for commutator, commutator copper material precision machining, precision Carbide saw blades exhibit longer cutting life and more consistent cutting performance.

Automobile industry production of science and technology and automation requirements of auto parts supporting the production of technology is also a direct manifestation of self-energy, which requires the maximum production efficiency. To be good at work, we must first of its profits, which is the tool products High-performance, long-life life put forward higher requirements, especially for automotive parts of the copper commutator precision machining operations, the life of long-term cutting operations and consistent cutting of finished products, the quality requirements of carbide saw blade Make a direct request. The application of carbide material selection is the foundation that the precision machining of finished carbide saw blade finished products and consistent mass production is required to match the mechanical work directly to the production efficiency. Simply put, high speed milling operations are hard The precision of the quality of the saw blade is very high, and the accuracy of each dimension is required to ensure the stability and service life of the cutting process. Any deviation of the size of the high speed machining will affect the direct life of the carbide saw blade And cutting performance, auto parts copper commutator, commutator processing is a high-quality embodiment of precision alloy saw blade cutter.