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发明名称
金刚石复合片钻头的焊接方法
摘要
金刚石复合片钻头的焊接方法,是在封闭的石墨模具内,在同一温度下同时施用银基钎料钎焊和无压浸渍两种方法。把金刚石复合片焊接在粉末冶金预制成型的钻头冠部,它包括用粉末冶金烧结带有预留孔和支撑背的钻头冠部,放置金刚石复合片及充填钎焊料、充填剂,施加银钎焊熔剂并组装封闭,入炉加温保温。它具有焊接牢固、降低复合片精加工费用、对复合片损伤小和确保钻头规格尺寸等优点。用此法制造的地质岩心钻头,在软到中硬地层中钻进,平均钻头寿命达116.25米,平均时效为2.62米/小时。
申请公布号
CN86103437A
申请公布日期
1987.12.02
申请号
CN86103437
申请日期
1986.05.24
申请人
地质矿产部探矿工程研究所
发明人
叶玉屏;赵永明;周连科;李鹏鸣
分类号
B23K1/12;B23K1/19
主分类号
B23K1/12
代理机构
代理人
主权项
1、金刚石复合片钻头的焊接方法,包括粉末冶金烧结带有予留孔和支撑背的钻头冠部、放置金刚石复合片、充填钎焊料和充填剂、加温焊接,其特征是在封闭的石墨模具内,在同一温度同时施用银基钎料钎焊和无压浸渍两种方法,将金刚石复合片焊接在予制成型的钻头冠部。
地址
北京市周口店
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