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Blade Series Reduce Equipment Performance Oct 12, 2017

Blade Series failure and its adverse effects on the production equipment is similar to the athlete wear a pair of high quality running shoes. As the shoes bear the weight of the athletes, the Blade Series is repeatedly subjected to great stress, leading to wear and loss. If it is not resolved, wear will cause the athlete to feel pain and will reduce the manufacturer's machining accuracy and productivity. However, the manufacturer can analyze the tool used to maximize tool life and predict the use of the tool, thus maintaining the accuracy of the parts and reduce equipment performance. Early Blade Series inspection is critical to determining the root cause of failure because it is easy to observe and report at this time. If you do not take these important steps, it is possible to confuse different types of failure modes. For easy Blade Series inspection, a stereomicroscope can be used. The stereomicroscope has good optical characteristics, adequate lighting and at least 20x magnification, so it is very beneficial to identify the failure mode that causes premature wear of the Blade Series.

When the pieces of the workpiece are welded to the cutting edge by hot pressing, there is a BUE, which is due to chemical affinity, high pressure and high temperature in the cutting zone. Bugs will eventually fall off, sometimes falling off with the Blade Series fragments, resulting in micro-collapse and rapid flank wear.

This failure mechanism is common in viscous materials, low speed, superalloys, stainless steel and nonferrous metal materials, as well as thread processing and drilling. Bugs can be identified by abnormal changes in workpiece size or surface roughness and flashing material appearing on the top or flank of the cutting edge.

The microstructures can be controlled by increasing the cutting speed and feed rate by using a nitride (TiN) coating Blade Series, using a coolant (such as increasing the concentration), and selecting a geometrical shape with reduced force and / or Smooth surface of the Blade Series.

1. The main components of the Blade Series are different proportions of tungsten carbide and cobalt, the original form of the raw material is powder. The containers are filled with raw materials and they will be used to produce different powders. Each container weighs about 560 kg.

2. In the workshop, the dry raw materials and ethanol and water mixed with the solvent to form a paste similar to the yogurt gray paste.

3. After the slurry dries, send the sample to the laboratory for quality inspection. These powders consist of a number of particles having a diameter of 20 to 200 microns. They are very small (a hair thickness is 50 to 60 microns).

4 & 5. These powders are packed in a barrel of 100 kg in volume and fed to the edge of the press used to make the Blade Series. The operator puts the die (the die for stamping the different Blade Seriess) into the machine and enters the order number into the computer. The mold cavity is filled with powder. Stamping the pressure of each Blade Series up to 12 tons. The machine will weigh each Blade Series and the operator will also observe the control. At this stage, the Blade Series is very fragile and easily broken.

6. For hardening, the stamping Blade Series needs to be heated. This work is done by the sintering furnace. Sintering furnace can handle thousands of Blade Seriess at a time. The compressed Blade Series powder is heated to about 1,500 degrees Celsius for up to 13 hours and melted into a hard alloy with a very high hardness. The shrinkage ratio in the sintering process is about 50%, so the size of the Blade Series after sintering is only half that of the previous.