钢铁研究
鋼鐵研究
강철연구
RESEARCH ON IRON AND STEEL
2001年
2期
28-31
,共4页
铁路车轮%热处理%硬度
鐵路車輪%熱處理%硬度
철로차륜%열처리%경도
对大规格的1098mm车轮进行了热处理试验，目的是提高车轮横断面硬度值。试验结果表明，采用250s喷水淬火工艺可使轮辋内部组织转变完成，增加喷水时间、二次喷水均不能提高硬度。在800℃左右较低温度喷水淬火加强冷却过程提高硬度，且为降低回火温度创造了条件，进一步提高硬度值。
對大規格的1098mm車輪進行瞭熱處理試驗，目的是提高車輪橫斷麵硬度值。試驗結果錶明，採用250s噴水淬火工藝可使輪輞內部組織轉變完成，增加噴水時間、二次噴水均不能提高硬度。在800℃左右較低溫度噴水淬火加彊冷卻過程提高硬度，且為降低迴火溫度創造瞭條件，進一步提高硬度值。
대대규격적1098mm차륜진행료열처리시험，목적시제고차륜횡단면경도치。시험결과표명，채용250s분수쉬화공예가사륜망내부조직전변완성，증가분수시간、이차분수균불능제고경도。재800℃좌우교저온도분수쉬화가강냉각과정제고경도，차위강저회화온도창조료조건，진일보제고경도치。
In order to raise the hardness value of wheels experiments of heat treatment have been carried out on large sized φ1098 wheels. Results indicate that by water spray quenching for 250 s can the transformation of the internal structure of the wheel rim be accomplished, and neither increase of spray time nor application of secondary water spray can improve hardness, yet water spray quenching at relatively lower temperature of about 800℃ can accelerate the cooling process and improve hardness, thus creating necessary conditions for lowering the tempering temperature and further raising the hardness value.
