A detailed account of the knives of carbon steel SHKH15
It is time to discuss alloyed and carbon steel, commonly referred to as nezastroennoe as «carbon». First and foremost, it should tell you about steel, which is the most popular – about the SH 15.
For about a hundred years of chromium alloyed steels are used as tool, bearing and wear-resistant. Also this group can be attributed to the classical steels used abroad. For a long time among casinogamenow more popular with manganese and carbon steel type 65G or U8, but with the arrival of 2000 steel SH 15 and manufactured on the basis of its copyrighted material have become one of the market leader. All due to the fact that the resulting products have high performance, and the raw materials and technological is available.
Well, look at the steel SHKH15 more. This steel is a classic representative of the class of low-alloy chromium steels. As the main alloying element is carbon, and chromium.
These have become very common and are used as the primary material in the manufacture of bearings. SHKH15 can go through alloying with molybdenum, have increased the value of silicon and manganese (and sometimes chromium) to improve the hardenability, aluminum, cobalt and silicon to improve heat resistance.
The main difference from the high-chromium steels, as mentioned earlier, in steels of this group the amount of chromium is small enough, and therefore it does not form its own carbides, remaining in solid solution and also as part of cementite. If we talk about structural characteristics, these steels are hypereutectoid, that is all fine carbides. It was determined that high contact endurance and uniformity of these steels. Same as other «carbon» steel SHKH15 perfectly hold thin edge.
This steel became the basis for such copyright materials, such as «Carbon Carbon Steel». In these copyright materials bolitophagini structures and the corresponding patterns obtained with the aid of the regimes of hot deformation. A large number of Bulatov today was created based on SHKH15.
As well as other steels of this type, this steel has sensitivity to such technological aspects of production, such as heat treatment and hot deformation. Also, for this group, more methods can have the greatest efficiency, so as to increase the resistance of the end product several times.
This class of steels shows its advantages during processing, showing a sufficiently high hardness, HRC 61-63. Also, this ensures high resistance to wear (it should be noted that for these steels this parameter is highly dependent on the hardness), and high resistance to creasing, but remains at a sufficient level of ductility and toughness.
In most cases, the Flexural strength with the necessary hardness level does not exceed the values 2200-2400 MPa, when the toughness is 0,2-0,3 MJ/m2.As a result, the strength is slightly lower than that of chromium steels with a high LEGIROVANNOGO, but the ductility is slightly higher and toughness is approximately equal.
Best mode for quenching is 810-820°, in the case of quenching with an aqueous solution, and 830-850° in the case of hardening with the oil.
If to speak about optimum tempering temperature, it is about 150-160°, and the value of the resulting hardness will be approximately 61 to 64 HRC.
As mentioned earlier, the characteristics of the products SHKH15 perfectly enhanced by proper heat treatment and hot deformation.