Use null to the tool of the steel and that heat treatment tool and the said steel which are produced with integrated metal ceramic

摘要

(57) Abstract As for this invention, weight % with alloy composition below: (C+N): 1.41.6 and Mn: 0.6, Si: max1.2 and Cr: 3.54.3 and Mo: 1.53, (here Weg=%W+2X%Mo and 6Weg9), V: 3.54.5 and S: max0.3 and Cu: max0.3 and Co: maxl, (Nb+Ta+Ti+Zr+Al) conjunction measurable variable: 1.0, usually the impurity of the tonnage and the other element which includes the microelement: Total 0.5, balance: The iron, it possesses, at the same time, it consists of the martensite type matrix substantially, possesses the grain size of 0.13 millimicron in the said matrix it is not dissolved it is something of the MX type where the shift product where exists the 215, 510 capacity % desirably, said as for the shift product, C of the alloy and 40 - 60% of N contents has joined with vanadium the carbide and/or as a karubo nitride (in M formula it is V, as for X C and/or it is N,); At the same time, at temperature of 1000 - the 1225 above each time 30 minute, selected the shift product the bridge talent tonnage is included at least, in the martensite type matrix of 2 drawing later; Furthermore forming and/or it regards the use of the said steel to the tool for cutting job in regard to the steel which possesses microstructure.