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Carbide With Excellent Wear Resistance

Jun 09, 2017

Carbide band saw blade tip with: high hardness, excellent wear resistance, saw belt with high fatigue resistance, high-speed sawing a variety of non-ferrous metals and super-hard special brittle metal materials. Particularly suitable for sawing: cast iron, ductile iron, high temperature alloy, memory alloy, Carbide Strip titanium alloy and wear tool steel.

Carbide belt in use, in addition to follow the basic operation of bimetal band saws, but also need to pay attention to the choice of linear speed.

In the machinery manufacturing, due to the rapid upgrading of carbide belt, and therefore the selection of parts also have higher requirements, especially in the aerospace, large power plants and ships and other industries in the manufacture of some difficult processing materials such as superalloys, Titanium alloy, heat-resistant stainless steel, composite materials, has been widely used, Carbide Strip in which the application of large and more commonly used high-temperature alloy materials, high efficiency processing has received more attention.

Carbide belt is a superalloy, usually divided into three categories, namely iron-based superalloy, nickel-based superalloy and cobalt-based superalloy, from the difficult degree of processing, nickel-based superalloy processing should be said to be more typical and Representative.

The main reason for the difficult processing of high-temperature alloys can be summed up in four aspects: First, the material high temperature strength, processing hardening tendencies, the general nickel-based superalloy unit cutting force than the carbon alloy steel 50% higher; The surface layer of the hardening and residual stress, hardening degree of up to 200% to 500%; Second, poor thermal conductivity, its thermal conductivity of about 45 steel 1/5 ~ 1/2, so the cutting temperature is high; The tendency of the adhesive of the tool is large, Carbide Strip and it is easy to produce BUE in the processing of the superalloy, which makes the cutting unstable, which affects the surface quality of the processing. Fourth, the high element content is enhanced. In the alloy to form a large number of highly polished metal carbide, intermetallic compounds and other hard points, the knife has a strong scratches.

The cutting process of the superheating alloy is the first process in the machinery manufacturing. The traditional cutting process is usually carried out on a horizontal band sawing machine using a ring-type bimetallic band saw blade to cut off the parts of the bar, Ordinary alloy tool steel and high-speed steel band saw blade, can not be high-temperature alloy processing). The use of high-performance high-speed steel bimetallic band saw blade (edge material M42) to cut difficult to process high-temperature alloy, Carbide Strip the cutting efficiency is low, life is also very short, to cut a diameter of 130mm nickel-based superalloy bar for example (Material for the GH4169), the use of M42 bimetallic saw blade generally a cutting time of about 8 to 10 hours, and a saw blade life can only be the next one, after we chose a high-quality super-hard bimetallic Band saw blade (grade M51), with the saw blade on the same specifications, with the material of the high temperature alloy bar material processing, the result is in the cutting tool efficiency and life are slightly improved, but the increase is only 15% 20% (the saw blade cutting edge hardness of 67 ~ 69HRC), we believe that with this material and type of band saw blade, processing of high-temperature alloys can not meet the requirements of production, for which we have a variety of programs after comparison, after Selection of hard alloy with high hardness, with the test and practical application, indeed, carbide belt in the high temperature alloy processing, and achieved significant results to meet the production schedule requirements.