LOW ALLOY CAST STEEL, AND SMELTING METHOD AND HEAT TREATMENT THEREOF, AND RAILWAY LOCOMOTIVE PART OF SAME

Title:

LOW ALLOY CAST STEEL, AND SMELTING METHOD AND HEAT TREATMENT THEREOF, AND RAILWAY LOCOMOTIVE PART OF SAME

Document Type and Number:

WIPO Patent Application WO/2018/001346

Kind Code:

A1

Abstract:

A low alloy cast steel, and a smelting method and heat treatment thereof, and a railway locomotive part of same. The low alloy cast steel comprises the following components in the respective weight percentages: 0.19-0.25% of carbon, 0.30-0.50% of silicon, 0.90-1.15% of manganese, ≤ 0.030% of phosphorus, ≤ 0.030% of sulfur, 0.19-0.29% of chromium, 0.13-0.19% of molybdenum, 0.02-0.06% of aluminum, 0.02-0.10% of tungsten, and 0.01-0.05% of niobium, wherein 0.04% ≤ tungsten + niobium ≤ 0.12%; and a remainder of iron and other unavoidable elements. After heat treatment, the steel can be used as a Grade B+ steel.

Inventors:

ZHANG JUNXIN (CN)
WEN CHAO (CN)

Application Number:

PCT/CN2017/091007

Publication Date:

January 04, 2018

Filing Date:

June 30, 2017

Export Citation:

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Assignee:

CRRC QISHUYAN INST CO LTD (CN)

International Classes:

C22C38/02; C21C5/52; C21C7/068; C21D1/28; C22C38/04; C22C38/06; C22C38/12; C22C38/18

Foreign References:

CN105908081A	2016-08-31
CN102212755A	2011-10-12
CN102900793A	2013-01-30
CN103510024A	2014-01-15
CN103725963A	2014-04-16
JPH01319629A	1989-12-25
SU1712455A1	1992-02-15

Attorney, Agent or Firm:

CHINA PATENT AGENT (HK) LTD. (CN)

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