CN1034876C - 凿岩钎具钢 - Google Patents

凿岩钎具钢 Download PDF

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Publication number
CN1034876C
CN1034876C CN92109924A CN92109924A CN1034876C CN 1034876 C CN1034876 C CN 1034876C CN 92109924 A CN92109924 A CN 92109924A CN 92109924 A CN92109924 A CN 92109924A CN 1034876 C CN1034876 C CN 1034876C
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steel
drill
present
drill rod
rock
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CN1070953A (zh
Inventor
宋守志
佟庆安
徐小荷
吕荣
邢军
王连孝
杨晓明
英宏
唐春安
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Northeastern University China
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Northeastern University China
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Abstract

一种凿岩钎具钢，该钢具有较高的强度和韧性，适于用来制造大功率凿岩钎杆。该钢种是在中碳Ni-Cr-Mn-Si合金钢的基础上，加入V、Nb微合金元素，以提高其使用性能。利用此钢制成的钎杆，经热轧并控冷后，只做简单的回火、不需复杂的热处理。生产工艺简单，质量稳定，寿命高。

Description

凿岩钎具钢
本发明属于一种合金钢，该合金钢具有较高的强度和韧性，适于制造大功率液压凿岩机钎杆。
凿岩过程中，钎杆在凿岩机械与岩石之间起着传递能量的作用。服役中，钎杆承受巨大的冲击，扭转载荷，以及外部磨损和内孔应力的腐蚀，工作条件十分严苛。随着大功率凿岩机械的发展，特别需要高寿命的凿岩机钎杆，也就是需要提供高性能的钎具钢。目前使用的重型钎具钢多为低碳Cr-Ni合金钢，该合金钢的生产需要经过退火、渗碳、淬火、回火等热处理工艺，制造工艺复杂，工艺线路较长，成本高，产品质量不稳定，影响凿岩机械的生产效率。
本发明的目的旨在提供一种高品质的凿岩钎具钢，该钎具钢具有强度、韧性高，生产工艺简单，成本低的特点，利用这种钎具钢制成的钎杆比现有钎杆的使用寿命长。
本发明的目的通过如下技术方案实现：凿岩钎具钢的化学成分(重量％)为：C0.15～0.45％， Si0.50～1.50％，Mn0.50～1.50％，Cr0.30～1.00％，Ni0.80～3.50％，Mo0.10～1.00％，V0.02～0.20％和/或Nb0.01～0.15％，
其余为Fe及少量杂质。
将上述成分的微合金钢，经热轧空冷，再经过200～600℃温度回火调整硬度，制取凿岩钎杆。本钎具钢经上述加工处理后，即保留了轧制造成的变形强化效果，又可获得较细的非平衡显微组织，因而具有较高的强度和韧性。
利用本发明钢制造的试样进行疲劳试验，结果如下表：
钢    种     HRC    σ-1(MPa) N250(次)  寿命比(％)
本发明钢 单独加入V     43     137 3.6×106     300
单独加入Nb     43     191 3.8×106     317
同时加V、Nb     45     200 4.3×106     358
FF710     42     162 2.3×106     192
40CrNiMo     33     170 3.0×106     250
55SiMnMo     42     120 1.2×106     100
试验结果表明，由于加入V、Nb元素，提高了钎杆的使用寿命，即提高了钎杆的强度和韧性。以同时加入V、Nb元素的试样为例，钎杆寿命比较FF710钢高89％，比较55SiMnMo钢高350％。所制实物钎杆使用寿命，与上述结果完全吻合。

Claims (1)

1.凿岩钎具钢，其特征在于其化学成分(重量％)为：C0.15-0.45％，Si0.50-1.50％，Mn0.50-1.50％，Cr0.30-1.00％，Ni0.80-3.50％，Mo0.10-1.00％，V0.02-0.20％和/或Nb0.01-0.15％，其余为Fe及少量杂质。
CN92109924A 1992-09-26 1992-09-26 凿岩钎具钢 Expired - Fee Related CN1034876C (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN92109924A CN1034876C (zh) 1992-09-26 1992-09-26 凿岩钎具钢

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN92109924A CN1034876C (zh) 1992-09-26 1992-09-26 凿岩钎具钢

Publications (2)

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CN1070953A CN1070953A (zh) 1993-04-14
CN1034876C true CN1034876C (zh) 1997-05-14

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392191A (zh) * 2011-10-31 2012-03-28 铜陵狮达矿山机械有限公司 一种多组分钎具钢及其制备方法
CN102367556B (zh) * 2011-10-31 2013-01-30 铜陵狮达矿山机械有限公司 一种钎具钢
CN102373380A (zh) * 2011-10-31 2012-03-14 铜陵狮达矿山机械有限公司 一种高强度钎具钢及其制备方法
CN102409250B (zh) * 2011-10-31 2013-02-27 铜陵狮达矿山机械有限公司 一种凿岩钎具钢及其制备方法
CN103695797A (zh) * 2013-12-21 2014-04-02 湘潭高新区风动机械有限公司 一种凿岩钎具用中空钢
CN104532145A (zh) * 2014-12-29 2015-04-22 武穴市长江工具股份有限公司 一种高气压潜孔凿岩钎具钢及其制备方法
CN106636923A (zh) * 2016-12-30 2017-05-10 天津威尔朗科技有限公司 一种钎杆及其制备方法
CN107974629A (zh) * 2017-11-27 2018-05-01 长沙黑金刚实业有限公司 一种钎具用钢、其制备方法及钎具
CN112322984A (zh) * 2020-11-16 2021-02-05 江苏联峰能源装备有限公司 一种钎杆用钢及其制备方法
CN114645222B (zh) * 2022-03-23 2022-12-23 常州大学 一种Nb-V微合金化抗氢脆高强韧40CrNiMo钢及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118469A (en) * 1990-10-22 1992-06-02 Mitsubishi Steel Mfg. Co., Ltd. High strength spring steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118469A (en) * 1990-10-22 1992-06-02 Mitsubishi Steel Mfg. Co., Ltd. High strength spring steel

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