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DJM ceramic composite casting flight bar technology introduction

      While the material in the scrapper channel moves, the internal friction in the material is generated by the pressure against scrapper chain and its own gravity, which will keep the material steady.  This friction is greater than the outside one as the material slide in the channel, so the material is transported continuously as a whole.  The scrapper flight bar should be strong, stiff, wear resistant and corrosion resistant, because it will bear a lot of force such as tension, pressure, bending, impact, friction and corrosion during the transporting. The scrapper chain move together with material in the scrapper channel, so both resistance and abrasion is great. The flat bar, made of 16Mn(or 40 Cr, 42CrMo), is the bear carrier and connected vertical to the chain. During operation, the flight bar will bear great resistance, dynamic load and static load, so the flight bar should be strong, stiff and wear resistant.  

      In order to improve the wear resistance and impact resistance of the flight bar, DJM use the composite of high Cr and ceramic on steel base. We adopt the powder metallurgy core making and casting sintering, during pouring the composite of high cr and ceramic is put to reduce the temperature of molten manganese steel, the alloy element in the composite are used to refine the high manganese steel grain to   
improve the performance of high-manganese steel,  give full play to the capacity of self hardening under impact and improve the ability of impact resistance;
      High wear-resistant properties of composite of high Cr and ceramic will greatly improve the wear resistance of flight bar surface, thus resulting in flight bar of both high impact and wear resistance.
 
      We also can use the method of suspension casting, put high Cr powder and ceramic powder into the molten steel during pouring to reduce the temperature, refine grain, reduce shrinkage and increase the randomness of Crystallization to improve the wear resistance under low impact. The self hardening of the high Mn steel can reduce the plastic deformation and improve impact resistance.  High wear-resistant properties of composite of high Cr and ceramic will greatly improve the wear resistance of flight bar surface, thus resulting in flight bar of both high impact and wear resistance.
 
Product include:
Martensite steel
Martensite steel + ZTA ceramic particles
Froged in 42CrMo, 40Cr, 20SiMn 16Mn,40Mn2,27SiMn

 Picture -1 external view of flight bar

Picture-2 Martensite steel ceramic flight bar external view
Hits:  UpdateTime:2017-09-05 13:19:39  【Printing】  【Close
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