Zhongshan tungsten steel milling cutter explains what kind of wear the milling cutter will suffer
Wear factors of tungsten steel milling cutter are as follows:
1. Mechanical wear: from the chip and the tool rake face, the elastic deformation of the workpiece surface and the sharp conflict wear between the tool flank are called mechanical wear. When the cutting temperature is not too high, the main cause of the conflict formed by this mechanical wear.
2. Thermal wear: during cutting, due to severe plastic deformation and metal conflict, the heat is reduced to reduce the hardness of cutting wear, resulting in the loss of blade wear, which is called thermal wear.
3. Under high temperature and high pressure, there will be adhesion between tungsten steel milling cutter and workpiece material, and a part of cutting tool material will be eroded, which will cause adhesive wear of the tool.
4. At higher temperature, under the influence of some elements, such as tungsten, cobalt, titanium and other elements, will spread to the inside of the tool material, so that the chemical composition of the cutting surface of the tool will also occur, and the strength and wear resistance will be reduced, which will cause the tool diffusion wear.
Measures to prevent wear and tear
1. Reasonable selection of milling cutter blade trademark: the blade material with high resistance, low sensitivity to thermal cracking, and good heat resistance and wear resistance should be selected. For example: when milling steel, ys30, YS25 and other trademark blades can be selected; when milling cast iron, yd15 and other trademark blades can be used to prevent milling cutter wear.
2. Reasonable selection of milling parameters: under certain processing conditions, there is a safe operation area without damage,. The selection of VC and? Z in the safe operation area can ensure the normal operation of the milling cutter and prevent the wear of the milling cutter.
3. Reasonable selection of the relative orientation between the workpiece and the milling cutter: reasonable selection of the installation orientation of the face milling cutter plays an important role in reducing the wear of the face milling cutter.
Source: Zhongshan tungsten steel milling cutter http://www.bjhtbj.cn
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10-12
What are the causes of chip accretion on NC tools?
The reason is that the chip bottom metal is embedded in the micro uneven peak valley on the front cutter surface due to the large down pressure in the part close to the cutting edge, forming a gap free metal to metal touch, which is called the bonding area. In the bonding zone, there will be a thin layer of metal data accumulated on the rake face at the bottom of the chip. The metal data of this part of the chip is severely deformed and strengthened at the appropriate cutting temperature. With t
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10-12
What are the wear types of tungsten steel milling cutters?
Abrasive wear machining materials often have some very hard particles, these particles will form grooves on the surface of the tool, which is the grinding loss. All surfaces are worn, especially the rake face. In addition, although the wear of hemp occurs at various cutting speeds, the wear caused by other reasons is not obvious due to the low cutting temperature at low cutting speed, so it is mainly the abrasion of abrasive materials. The lower the tool hardness is, the more serious the grindin