Austrian Manganese Steel Materials Gave Birth To The Metamorphic Process Research And Application Development

Commonly used ball mill backing has the high manganese steel backing and the carbon alloy steel backing and so on,high manganese steel backing toughness is good,but the initial degree of hardness is insufficient;But carbon alloy steel degree of hardness is high,but toughness is bad.This article in view of the existing Austria manganese steel material performance insufficiency,through the chemical composition design and the micro alloy,selects the appropriate inoculant and the alterant carries on double deterioration processing,obtained under the same operating mode condition the wear-resisting performance to be wear-resisting the steel compared to the tradition to raise reaches as high as 50%-100%above high performance Austria manganese steel;Through analyzes the double deterioration to process the Austria Manganese steel Organization shape,the ingredient distribution and the performance characteristic,has discussed the inoculant,the alterant in Austria manganese steel function mechanism,for further improved the Austria manganese steel molten steel double deterioration effect,enhances the Austria manganese steel performance to provide the rationale and the instruction.According to carbon,manganese in Austria manganese steel action mechanism,use operating mode condition,as well as between Mn and C empirical relationship,in determination manganese steel Mn content in 7.5-11%,C content in 1.15-1.2%;High manganese steel Mn content 11.0-14.0%,C content in 0.90-1.20%.Other element Si,Cr,P content separately in 0.3-0.6%,1.5-2.5%,≤0.04%,impurity element S≤0.04%.Moreover, but also used B,Nb,N and so on has carried on the micro alloy,by refinement crystal grain.Using the rare earth RE-Ca-Ti-Al compound alterant,V dregs-Ti-Zn compound inoculant carries on micro alloy processing to the Austria manganese steel,obviously changed the carbide quantity,the size and the shape distribution;obviously enhanced the uniformity which distributes in the austenite substrate;Reduced and improved the nonmetallic quantity and the distributed condition;Refinement austenite crystal grain, remarkable reduction because the carbide fuse stays behind micro crack.These characteristic change distinct enhancement Austria manganese steel work piece comprehensive mechanics performance and wear-resisting performance,and as a result of the tough enhancement,in enhances the carbon content moderately in the foundation, because sharpened the work hardening ability,after causes the work piece to rub the degree of hardness remarkable enhancement.Not only grades compound double deterioration processing to be able to enhance the molten steel the smelting processing quality,also can sharpen the anti-breeding decline ability,to the thick section heavy casting,implements micro alloy processing to be possible to solve the macrocrystailine phenomenon which produces by in the casting process and the heat treatment process and to promote its surface layer and the heart department organization's uniformity.According to the above alloying constituent design and double deterioration processing,the obtained Austria manganese steel mechanics performance and the wear-resisting performance have the big enhancement,in particular the manganese steel material,σb enhances 916MPa from deterioration before 793MPa,αk enhances 76J/cm2 from 46J/cm2,after rubs degree of hardness to enhance 768Hv from 693Hv,the relatively wear-resisting coefficientβfrom 1.78 enhances to 2.63;This main reason is the manganese steel besides has the carbon melting strengthening and the carbide dissemination which the high manganese steel and the superelevation manganese steel have strengthens also easy to produce the massive stress mutagenesis martensite,thus makes its work hardening speed to enhance,the work hardening effect is more remarkable.