Several factors about the existence of tool break

Generally speaking, in the traditional tool world there is a line, this is "regardless of the collapse", that is, tool coil package repair, and collapse is not responsible.However, as a responsible knife-maker or knife-seller, no one wants this kind of problem, but they have to face it.

The toughness of the tool is mainly determined by the following factors: material, forging process, heat treatment, tool geometry (including grinding blade Angle, etc.), the cutting skill of the object and the user.

For example, the average medium carbon steel tool, if slightly more hardened, then the impulse toughness is relatively much less, while the modern steel plant in the design and production of the material to determine the scope of its service;For another example, the domestic and developed countries of the same type of steel, or different domestic steel mills, or the same steel mill in different batches or even the same batch of products, the actual performance may be quite large, some may reach more than 10 times.This is the problem of material selection, which needs to be carefully tested.

Here is a brief discussion of the differences in the properties of different forging processes: for example, grooved steel is softer than full steel, because the heating temperature is higher, the heating time is longer, the possibility of decarbonization and oxidation is much greater.If again, some still have to fold forging, twist twist flower of what, more so.At the same time, it is closely related to the physical ability, mood and proficiency of the producer. 

Heat treatment is needless to say, general customers buy a knife, when the use of the collapse, the basic will take this to blame the knife maker or the knife seller, visible heat treatment level of importance.Different material different performance requirements, heat treatment process will also change accordingly, there is no invariable, here will not be detailed.

Tool geometry, more typical is the saber grinding edge, generally from the body to the lower part of the blade, so, the back of the blade thick, suitable for cutting heavy use.Some adopt flat grinding, small Angle cutting edge, sharp and suitable for light use such as cutting.And some take the arc to open grinding, not too sharp but suitable for chopping and so on.

Object problem, people who love knife will use it according to the characteristics of the knife in hand.For example, sharp knives are used to shave paper, thick-edged knives can cut old bamboo or even steel pipes, etc.Those who don't know much about dao will abuse it and hope that their dao is an invincible sword.

As for personal cutting skills, some people have no strength in their hands, fluttering and shaking when making a knife, or drawing a knife violently, or making a knife to try cutting Angle, all of which are easy to cause problems such as impassability and even collapse.

The above points basically include several important reasons for the collapse of the mouth, and also require the knife-maker and the knife-seller to put forward strict requirements in material selection, forging, heat treatment, grinding, pre-sales instructions, etc., to do their part carefully and be responsible for the general dao friends with excellent internal quality.

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