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STEEL FOR MECHANICAL CONSTRUCTION, METHOD OF HOT-SHAPING OF A PART FROM THIS STEEL, AND PART THUS OBTAINED.
STEEL FOR MECHANICAL CONSTRUCTION, METHOD OF HOT-SHAPING OF A PART FROM THIS STEEL, AND PART THUS OBTAINED.
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机译:机械结构用钢,从该钢热成形零件的方法以及所获得的零件。
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摘要
The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%=C=2.5%; 0.10%=Mn=2.5%; 0.60%=Si=3.0%; traces=Cr=4.5%; traces=Mo=2.0%; traces=Ni=4.5%; traces=V=0.5%; traces=Cu=4% with Cu=Ni %+0.6 Si % if Cu=0.5%; traces=Al=0.060%; traces=Ca=0.050%; traces=B=0.01%; traces=S=0.200%; traces=Te=0.020%; traces=Se=0.040%; traces=Pb=0.070%; traces=Nb=0.050%; traces=Ti=0.050%; the remainder being iron and impurities resulting from the manufacture. The invention also relates to a method of hot-shaping a steel part, wherein a billet of steel of the preceding composition is obtained, it is heated to a temperature between the solidus and the liquidus so as to obtain a liquid phase and a globular solid phase, shaping of the said billet is carried out by thixoforging so as to obtain the said part, and cooling of the said part is carried out. Finally, the invention relates to a steel part thus obtained.
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机译:本发明涉及一种用于机械结构的钢,其中其重量百分比的组成为:0.35%≤C≤2.5%; 0.10%<= Mn <= 2.5%; 0.60%<= Si <= 3.0%;痕迹<= Cr <= 4.5%;痕迹<= Mo <= 2.0%;痕迹<= Ni <= 4.5%;迹线<= V <= 0.5%;如果Cu> = 0.5%,则痕迹<= Cu <= 4%,其中Cu <= Ni%+ 0.6 Si%;迹线<= Al <= 0.060%;迹线<= Ca <= 0.050%;痕迹<= B <= 0.01%;迹线<= S <= 0.200%;迹线<= Te <= 0.020%;迹线<= Se <= 0.040%;痕迹<= Pb <= 0.070%;痕迹<= Nb <= 0.050%;迹线<= Ti <= 0.050%;其余是铁和制造过程中产生的杂质。本发明还涉及一种热成形钢零件的方法,其中获得具有前述组成的钢坯,将其加热到固相线和液相线之间的温度,以获得液相和球状固体。在该阶段中,通过触变成形使上述坯料成形,从而得到上述零件,并对上述零件进行冷却。最后,本发明涉及一种如此获得的钢部件。
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