小口徑彈體淬火冷卻硬度分布不均勻分析

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摘要：小口徑彈體用鋼消耗量大，硬度均勻性要求高，常規(guī)淬火處理后經(jīng)常出現(xiàn)硬度偏低和波動(dòng)性大的問(wèn)題，不但影響了彈體的打擊能力，而且增加了生產(chǎn)成本。經(jīng)過(guò)理論分析，確定了常規(guī)淬火硬度偏低和波動(dòng)性大的原因，提出了淬火改進(jìn)措施。試驗(yàn)結(jié)果顯示：改進(jìn)淬火處理后硬度和波動(dòng)性均得到了改善，達(dá)到彈體的技術(shù)要求。

關(guān)鍵詞：小口徑彈體；T12A鋼；硬度；淬火冷卻

Discussion of hardness uneven of small bullet steel during quenching process

TAN Qiuyun1， WANG Xiaoping1， SUN Guojin2

1. Changsha Sunray Heat Treatment Co.，  Ltd.， Changsha 410323， Hunan， China

2. School of Materials Science and Engineering， Henan Institute of Technology，  Xinxiang 453003， Henan， China

Abstract： The phenomenon of low and uneven hardness of small bullet steel offen occurs after normal heat treatment which affect the strike and productive capacity. The reason for the low and uneven of hardness are discussed and the improving processes are posed here. Results show that after modified quenching process the hardness were improved and the variations were decreased which meet the technical requirements of bullet steel.

Keywords： small bullet steel; T12A steel; hardness; quenching process

1 序言

輕武器如步槍、機(jī)槍、沖鋒槍等，具有質(zhì)量輕、機(jī)動(dòng)性強(qiáng)等特點(diǎn)，是各兵種常規(guī)裝備武器之一[1-3]。（剩余2930字）