105 1.2 16 cutting disc is generally a kind of commonly used cutting piece made of resin. It is mainly used for difficult-to-cut materials such as alloy steel and stainless steel. The cutting function is especially obvious. It is mentioned that its primary manufacturing material resin, in a broad sense, refers to the softening or melting scale after heating, and tends to be active under the effect of external force when softened, solid or semi-solid at normal temperature, and sometimes organic polymerization in liquid state. Object.In the narrow sense, it is generally a normal metabolic product or secretion arranged by plants. It is a semi-solid, solid or pseudo-solid amorphous organic substance, generally a high molecular substance, which is either bright or unclear. There is no fixed melting point, there is a softening point and a melting scale, and there is an activity tendency under the stress effect. It is heated, softened and gradually melted. It is sticky when melted, non-conductive, mostly insoluble in water, and soluble in organic solvents such as ethanol and ether.At present, the water-soluble resin, the alcohol-soluble resin, and the oil-soluble resin are classified according to the solubility thereof, but the natural resin, the synthetic resin, and the artificial resin can also be classified depending on the source. However, if it is changed according to the hungry function after heating, it can be divided into red heat setting resin and thermosetting resin.Generally, some cutting pieces will show cracks after a period of use. Many people can't help but ask why it cracks.This is primarily because the cutting piece does not plastically deform like a metal under the effect of external force, but simply causes the stress to be concentrated in a certain part, which makes this part of the disadvantage - the crack source is agilely transformed into a crack. Once the internal crack is formed and reaches a certain critical dimension, it is very simple to expand. The internal stress immediately gathers on the tip of the crack and expands to the tip. It cannot absorb the external force by changing its shape like metal. The energy brought up can only absorb this part of the energy by means of generating a new appearance. The expansion of the crack means the composition of two new appearances.That is to say, the crack is agilely expanded, and the new appearance agile increases until the crack is formed, and the added energy is completely converted into the energy produced by the new appearance, so that the crack is presented.
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